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[PATCH bpf] xsk: harden userspace-supplied &xdp_desc validation

by Alexander Lobakin

Turned out certain clearly invalid values passed in &xdp_desc from userspace can pass xp_{,un}aligned_validate_desc() and then lead to UBs or just invalid frames to be queued for xmit. desc->len close to ``U32_MAX`` with a non-zero pool->tx_metadata_len can cause positive integer overflow and wraparound, the same way low enough desc->addr with a non-zero pool->tx_metadata_len can cause negative integer overflow. Both scenarios can then pass the validation successfully. This doesn't happen with valid XSk applications, but can be used to perform attacks. Always promote desc->len to ``u64`` first to exclude positive overflows of it. Use explicit check_{add,sub}_overflow() when validating desc->addr (which is ``u64`` already). bloat-o-meter reports a little growth of the code size: add/remove: 0/0 grow/shrink: 2/1 up/down: 60/-16 (44) Function old new delta xskq_cons_peek_desc 299 330 +31 xsk_tx_peek_release_desc_batch 973 1002 +29 xsk_generic_xmit 3148 3132 -16 but hopefully this doesn't hurt the performance much. Fixes: 341ac980eab9 ("xsk: Support tx_metadata_len") Cc: stable(a)vger.kernel.org # 6.8+ Signed-off-by: Alexander Lobakin <aleksander.lobakin(a)intel.com> --- net/xdp/xsk_queue.h | 45 +++++++++++++++++++++++++++++++++++---------- 1 file changed, 35 insertions(+), 10 deletions(-) diff --git a/net/xdp/xsk_queue.h b/net/xdp/xsk_queue.h index f16f390370dc..1eb8d9f8b104 100644 --- a/net/xdp/xsk_queue.h +++ b/net/xdp/xsk_queue.h @@ -143,14 +143,24 @@ static inline bool xp_unused_options_set(u32 options) static inline bool xp_aligned_validate_desc(struct xsk_buff_pool *pool, struct xdp_desc *desc) { - u64 addr = desc->addr - pool->tx_metadata_len; - u64 len = desc->len + pool->tx_metadata_len; - u64 offset = addr & (pool->chunk_size - 1); + u64 len = desc->len; + u64 addr, offset; - if (!desc->len) + if (!len) return false; - if (offset + len > pool->chunk_size) + /* Can overflow if desc->addr < pool->tx_metadata_len */ + if (check_sub_overflow(desc->addr, pool->tx_metadata_len, &addr)) + return false; + + offset = addr & (pool->chunk_size - 1); + + /* + * Can't overflow: @offset is guaranteed to be < ``U32_MAX`` + * (pool->chunk_size is ``u32``), @len is guaranteed + * to be <= ``U32_MAX``. + */ + if (offset + len + pool->tx_metadata_len > pool->chunk_size) return false; if (addr >= pool->addrs_cnt) @@ -158,27 +168,42 @@ static inline bool xp_aligned_validate_desc(struct xsk_buff_pool *pool, if (xp_unused_options_set(desc->options)) return false; + return true; } static inline bool xp_unaligned_validate_desc(struct xsk_buff_pool *pool, struct xdp_desc *desc) { - u64 addr = xp_unaligned_add_offset_to_addr(desc->addr) - pool->tx_metadata_len; - u64 len = desc->len + pool->tx_metadata_len; + u64 len = desc->len; + u64 addr, end; - if (!desc->len) + if (!len) return false; + /* Can't overflow: @len is guaranteed to be <= ``U32_MAX`` */ + len += pool->tx_metadata_len; if (len > pool->chunk_size) return false; - if (addr >= pool->addrs_cnt || addr + len > pool->addrs_cnt || - xp_desc_crosses_non_contig_pg(pool, addr, len)) + /* Can overflow if desc->addr is close to 0 */ + if (check_sub_overflow(xp_unaligned_add_offset_to_addr(desc->addr), + pool->tx_metadata_len, &addr)) + return false; + + if (addr >= pool->addrs_cnt) + return false; + + /* Can overflow if pool->addrs_cnt is high enough */ + if (check_add_overflow(addr, len, &end) || end > pool->addrs_cnt) + return false; + + if (xp_desc_crosses_non_contig_pg(pool, addr, len)) return false; if (xp_unused_options_set(desc->options)) return false; + return true; } -- 2.51.0

1 month, 2 weeks

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[PATCH] f2fs: fix wrong block mapping for multi-devices

by Jaegeuk Kim

Assuming the disk layout as below, disk0: 0 --- 0x00035abfff disk1: 0x00035ac000 --- 0x00037abfff disk2: 0x00037ac000 --- 0x00037ebfff and we want to read data from offset=13568 having len=128 across the block devices, we can illustrate the block addresses like below. 0 .. 0x00037ac000 ------------------- 0x00037ebfff, 0x00037ec000 ------- | ^ ^ ^ | fofs 0 13568 13568+128 | ------------------------------------------------------ | LBA 0x37e8aa9 0x37ebfa9 0x37ec029 --- map 0x3caa9 0x3ffa9 In this example, we should give the relative map of the target block device ranging from 0x3caa9 to 0x3ffa9 where the length should be calculated by 0x37ebfff + 1 - 0x37ebfa9. In the below equation, however, map->m_pblk was supposed to be the original address instead of the one from the target block address. - map->m_len = min(map->m_len, dev->end_blk + 1 - map->m_pblk); Cc: stable(a)vger.kernel.org Fixes: 71f2c8206202 ("f2fs: multidevice: support direct IO") Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> --- fs/f2fs/data.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index ef38e62cda8f..775aa4f63aa3 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1497,8 +1497,8 @@ static bool f2fs_map_blocks_cached(struct inode *inode, struct f2fs_dev_info *dev = &sbi->devs[bidx]; map->m_bdev = dev->bdev; - map->m_pblk -= dev->start_blk; map->m_len = min(map->m_len, dev->end_blk + 1 - map->m_pblk); + map->m_pblk -= dev->start_blk; } else { map->m_bdev = inode->i_sb->s_bdev; } -- 2.51.0.710.ga91ca5db03-goog

1 month, 2 weeks

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[PATCH v6.1] smb: prevent use-after-free due to open_cached_dir error paths

by Shivani Agarwal

From: Paul Aurich <paul(a)darkrain42.org> commit a9685b409a03b73d2980bbfa53eb47555802d0a9 upstream. If open_cached_dir() encounters an error parsing the lease from the server, the error handling may race with receiving a lease break, resulting in open_cached_dir() freeing the cfid while the queued work is pending. Update open_cached_dir() to drop refs rather than directly freeing the cfid. Have cached_dir_lease_break(), cfids_laundromat_worker(), and invalidate_all_cached_dirs() clear has_lease immediately while still holding cfids->cfid_list_lock, and then use this to also simplify the reference counting in cfids_laundromat_worker() and invalidate_all_cached_dirs(). Fixes this KASAN splat (which manually injects an error and lease break in open_cached_dir()): ================================================================== BUG: KASAN: slab-use-after-free in smb2_cached_lease_break+0x27/0xb0 Read of size 8 at addr ffff88811cc24c10 by task kworker/3:1/65 CPU: 3 UID: 0 PID: 65 Comm: kworker/3:1 Not tainted 6.12.0-rc6-g255cf264e6e5-dirty #87 Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 11/12/2020 Workqueue: cifsiod smb2_cached_lease_break Call Trace: <TASK> dump_stack_lvl+0x77/0xb0 print_report+0xce/0x660 kasan_report+0xd3/0x110 smb2_cached_lease_break+0x27/0xb0 process_one_work+0x50a/0xc50 worker_thread+0x2ba/0x530 kthread+0x17c/0x1c0 ret_from_fork+0x34/0x60 ret_from_fork_asm+0x1a/0x30 </TASK> Allocated by task 2464: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 __kasan_kmalloc+0xaa/0xb0 open_cached_dir+0xa7d/0x1fb0 smb2_query_path_info+0x43c/0x6e0 cifs_get_fattr+0x346/0xf10 cifs_get_inode_info+0x157/0x210 cifs_revalidate_dentry_attr+0x2d1/0x460 cifs_getattr+0x173/0x470 vfs_statx_path+0x10f/0x160 vfs_statx+0xe9/0x150 vfs_fstatat+0x5e/0xc0 __do_sys_newfstatat+0x91/0xf0 do_syscall_64+0x95/0x1a0 entry_SYSCALL_64_after_hwframe+0x76/0x7e Freed by task 2464: kasan_save_stack+0x33/0x60 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3b/0x60 __kasan_slab_free+0x51/0x70 kfree+0x174/0x520 open_cached_dir+0x97f/0x1fb0 smb2_query_path_info+0x43c/0x6e0 cifs_get_fattr+0x346/0xf10 cifs_get_inode_info+0x157/0x210 cifs_revalidate_dentry_attr+0x2d1/0x460 cifs_getattr+0x173/0x470 vfs_statx_path+0x10f/0x160 vfs_statx+0xe9/0x150 vfs_fstatat+0x5e/0xc0 __do_sys_newfstatat+0x91/0xf0 do_syscall_64+0x95/0x1a0 entry_SYSCALL_64_after_hwframe+0x76/0x7e Last potentially related work creation: kasan_save_stack+0x33/0x60 __kasan_record_aux_stack+0xad/0xc0 insert_work+0x32/0x100 __queue_work+0x5c9/0x870 queue_work_on+0x82/0x90 open_cached_dir+0x1369/0x1fb0 smb2_query_path_info+0x43c/0x6e0 cifs_get_fattr+0x346/0xf10 cifs_get_inode_info+0x157/0x210 cifs_revalidate_dentry_attr+0x2d1/0x460 cifs_getattr+0x173/0x470 vfs_statx_path+0x10f/0x160 vfs_statx+0xe9/0x150 vfs_fstatat+0x5e/0xc0 __do_sys_newfstatat+0x91/0xf0 do_syscall_64+0x95/0x1a0 entry_SYSCALL_64_after_hwframe+0x76/0x7e The buggy address belongs to the object at ffff88811cc24c00 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 16 bytes inside of freed 1024-byte region [ffff88811cc24c00, ffff88811cc25000) Cc: stable(a)vger.kernel.org Signed-off-by: Paul Aurich <paul(a)darkrain42.org> Signed-off-by: Steve French <stfrench(a)microsoft.com> [ Do not apply the change for cfids_laundromat_worker() since there is no this function and related feature on 6.1.y. Update open_cached_dir() according to method of upstream patch. ] Signed-off-by: Cliff Liu <donghua.liu(a)windriver.com> Signed-off-by: He Zhe <Zhe.He(a)windriver.com> [Shivani: Modified to apply on 6.1.y] Signed-off-by: Shivani Agarwal <shivani.agarwal(a)broadcom.com> --- fs/smb/client/cached_dir.c | 39 ++++++++++++++++---------------------- 1 file changed, 16 insertions(+), 23 deletions(-) diff --git a/fs/smb/client/cached_dir.c b/fs/smb/client/cached_dir.c index 3d028b6a2..23a57a0c8 100644 --- a/fs/smb/client/cached_dir.c +++ b/fs/smb/client/cached_dir.c @@ -320,17 +320,13 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, /* * We are guaranteed to have two references at this point. * One for the caller and one for a potential lease. - * Release the Lease-ref so that the directory will be closed - * when the caller closes the cached handle. + * Release one here, and the second below. */ kref_put(&cfid->refcount, smb2_close_cached_fid); } if (rc) { - if (cfid->is_open) - SMB2_close(0, cfid->tcon, cfid->fid.persistent_fid, - cfid->fid.volatile_fid); - free_cached_dir(cfid); - cfid = NULL; + cfid->has_lease = false; + kref_put(&cfid->refcount, smb2_close_cached_fid); } if (rc == 0) { @@ -462,25 +458,24 @@ void invalidate_all_cached_dirs(struct cifs_tcon *tcon) cfids->num_entries--; cfid->is_open = false; cfid->on_list = false; - /* To prevent race with smb2_cached_lease_break() */ - kref_get(&cfid->refcount); + if (cfid->has_lease) { + /* + * The lease was never cancelled from the server, + * so steal that reference. + */ + cfid->has_lease = false; + } else + kref_get(&cfid->refcount); } spin_unlock(&cfids->cfid_list_lock); list_for_each_entry_safe(cfid, q, &entry, entry) { list_del(&cfid->entry); cancel_work_sync(&cfid->lease_break); - if (cfid->has_lease) { - /* - * We lease was never cancelled from the server so we - * need to drop the reference. - */ - spin_lock(&cfids->cfid_list_lock); - cfid->has_lease = false; - spin_unlock(&cfids->cfid_list_lock); - kref_put(&cfid->refcount, smb2_close_cached_fid); - } - /* Drop the extra reference opened above*/ + /* + * Drop the ref-count from above, either the lease-ref (if there + * was one) or the extra one acquired. + */ kref_put(&cfid->refcount, smb2_close_cached_fid); } } @@ -491,9 +486,6 @@ smb2_cached_lease_break(struct work_struct *work) struct cached_fid *cfid = container_of(work, struct cached_fid, lease_break); - spin_lock(&cfid->cfids->cfid_list_lock); - cfid->has_lease = false; - spin_unlock(&cfid->cfids->cfid_list_lock); kref_put(&cfid->refcount, smb2_close_cached_fid); } @@ -511,6 +503,7 @@ int cached_dir_lease_break(struct cifs_tcon *tcon, __u8 lease_key[16]) !memcmp(lease_key, cfid->fid.lease_key, SMB2_LEASE_KEY_SIZE)) { + cfid->has_lease = false; cfid->time = 0; /* * We found a lease remove it from the list -- 2.40.4

1 month, 3 weeks

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FAILED: patch "[PATCH] selftests: mptcp: connect: catch IO errors on listen side" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 14e22b43df25dbd4301351b882486ea38892ae4f # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025092158-molehill-radiation-11c3@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 14e22b43df25dbd4301351b882486ea38892ae4f Mon Sep 17 00:00:00 2001 From: "Matthieu Baerts (NGI0)" <matttbe(a)kernel.org> Date: Fri, 12 Sep 2025 14:25:51 +0200 Subject: [PATCH] selftests: mptcp: connect: catch IO errors on listen side IO errors were correctly printed to stderr, and propagated up to the main loop for the server side, but the returned value was ignored. As a consequence, the program for the listener side was no longer exiting with an error code in case of IO issues. Because of that, some issues might not have been seen. But very likely, most issues either had an effect on the client side, or the file transfer was not the expected one, e.g. the connection got reset before the end. Still, it is better to fix this. The main consequence of this issue is the error that was reported by the selftests: the received and sent files were different, and the MIB counters were not printed. Also, when such errors happened during the 'disconnect' tests, the program tried to continue until the timeout. Now when an IO error is detected, the program exits directly with an error. Fixes: 05be5e273c84 ("selftests: mptcp: add disconnect tests") Cc: stable(a)vger.kernel.org Reviewed-by: Mat Martineau <martineau(a)kernel.org> Reviewed-by: Geliang Tang <geliang(a)kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe(a)kernel.org> Link: https://patch.msgid.link/20250912-net-mptcp-fix-sft-connect-v1-2-d40e77cbbf… Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.c b/tools/testing/selftests/net/mptcp/mptcp_connect.c index 4f07ac9fa207..1408698df099 100644 --- a/tools/testing/selftests/net/mptcp/mptcp_connect.c +++ b/tools/testing/selftests/net/mptcp/mptcp_connect.c @@ -1093,6 +1093,7 @@ int main_loop_s(int listensock) struct pollfd polls; socklen_t salen; int remotesock; + int err = 0; int fd = 0; again: @@ -1125,7 +1126,7 @@ int main_loop_s(int listensock) SOCK_TEST_TCPULP(remotesock, 0); memset(&winfo, 0, sizeof(winfo)); - copyfd_io(fd, remotesock, 1, true, &winfo); + err = copyfd_io(fd, remotesock, 1, true, &winfo); } else { perror("accept"); return 1; @@ -1134,10 +1135,10 @@ int main_loop_s(int listensock) if (cfg_input) close(fd); - if (--cfg_repeat > 0) + if (!err && --cfg_repeat > 0) goto again; - return 0; + return err; } static void init_rng(void)

1 month, 3 weeks

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Unplayable framerates in game but specific kernel versions work, maybe amdgpu problem

by machion＠disroot.org

Hello kernel/driver developers, I hope, with my information it's possible to find a bug/problem in the kernel. Otherwise I am sorry, that I disturbed you. I only use LTS kernels, but I can narrow it down to a hand full of them, where it works. The PC: Manjaro Stable/Cinnamon/X11/AMD Ryzen 5 2600/Radeon HD 7790/8GB RAM I already asked the Manjaro community, but with no luck. The game: Hellpoint (GOG Linux latest version, Unity3D-Engine v2021), uses vulkan --- I came a long road of kernels. I had many versions of 5.4, 5.10, 5.15, 6.1 and 6.6 and and the game was always unplayable, because the frames where around 1fps (performance of PC is not the problem). I asked the mesa and cinnamon team for help in the past, but also with no luck. It never worked, till on 2025-03-29 when I installed 6.12.19 for the first time and it worked! But it only worked with 6.12.19, 6.12.20 and 6.12.21 When I updated to 6.12.25, it was back to unplayable. For testing I installed 6.14.4 with the same result. It doesn't work. I also compared file /proc/config.gz of both kernels (6.12.21 <> 6.14.4), but can't seem to see drastic changes to the graphical part. I presume it has something to do with amdgpu. If you need more information, I would be happy to help. Kind regards, Marion

1 month, 3 weeks

2
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[PATCH net v2] r8152: add error handling in rtl8152_driver_init

by yicongsrfy＠163.com

From: Yi Cong <yicong(a)kylinos.cn> rtl8152_driver_init missing error handling. If cannot register rtl8152_driver, rtl8152_cfgselector_driver should be deregistered. Fixes: ec51fbd1b8a2 ("r8152: add USB device driver for config selection") Cc: stable(a)vger.kernel.org Signed-off-by: Yi Cong <yicong(a)kylinos.cn> Reviewed-by: Simon Horman <horms(a)kernel.org> v2: replacing return 0 with return ret and adding Cc stable --- drivers/net/usb/r8152.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c index 44cba7acfe7d..8a0c824e9eb4 100644 --- a/drivers/net/usb/r8152.c +++ b/drivers/net/usb/r8152.c @@ -10122,7 +10122,14 @@ static int __init rtl8152_driver_init(void) ret = usb_register_device_driver(&rtl8152_cfgselector_driver, THIS_MODULE); if (ret) return ret; - return usb_register(&rtl8152_driver); + + ret = usb_register(&rtl8152_driver); + if (ret) { + usb_deregister_device_driver(&rtl8152_cfgselector_driver); + return ret; + } + + return ret; } static void __exit rtl8152_driver_exit(void) -- 2.25.1

1 month, 3 weeks

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[PATCH] dma: dw-axi-dmac: Release the clock resources

by Zhen Ni

In axi_dma_resume(), if clk_prepare_enable(chip->core_clk) fails, chip->cfgr_clk remains enabled and is not disabled. This could lead to resource leaks and inconsistent state during error handling. Ensure that cfgr_clk is properly disabled. Fixes: 1fe20f1b8454 ("dmaengine: Introduce DW AXI DMAC driver") Cc: stable(a)vger.kernel.org Signed-off-by: Zhen Ni <zhen.ni(a)easystack.cn> --- drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c index b23536645ff7..ab70dbe54f46 100644 --- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c +++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c @@ -1334,8 +1334,10 @@ static int axi_dma_resume(struct axi_dma_chip *chip) return ret; ret = clk_prepare_enable(chip->core_clk); - if (ret < 0) + if (ret < 0) { + clk_disable_unprepare(chip->cfgr_clk); return ret; + } axi_dma_enable(chip); axi_dma_irq_enable(chip); -- 2.20.1

1 month, 3 weeks

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+ ocfs2-clear-extent-cache-after-moving-defragmenting-extents.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: ocfs2: clear extent cache after moving/defragmenting extents has been added to the -mm mm-hotfixes-unstable branch. Its filename is ocfs2-clear-extent-cache-after-moving-defragmenting-extents.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Deepanshu Kartikey <kartikey406(a)gmail.com> Subject: ocfs2: clear extent cache after moving/defragmenting extents Date: Thu, 9 Oct 2025 21:19:03 +0530 The extent map cache can become stale when extents are moved or defragmented, causing subsequent operations to see outdated extent flags. This triggers a BUG_ON in ocfs2_refcount_cal_cow_clusters(). The problem occurs when: 1. copy_file_range() creates a reflinked extent with OCFS2_EXT_REFCOUNTED 2. ioctl(FITRIM) triggers ocfs2_move_extents() 3. __ocfs2_move_extents_range() reads and caches the extent (flags=0x2) 4. ocfs2_move_extent()/ocfs2_defrag_extent() calls __ocfs2_move_extent() which clears OCFS2_EXT_REFCOUNTED flag on disk (flags=0x0) 5. The extent map cache is not invalidated after the move 6. Later write() operations read stale cached flags (0x2) but disk has updated flags (0x0), causing a mismatch 7. BUG_ON(!(rec->e_flags & OCFS2_EXT_REFCOUNTED)) triggers Fix by clearing the extent map cache after each extent move/defrag operation in __ocfs2_move_extents_range(). This ensures subsequent operations read fresh extent data from disk. Link: https://lore.kernel.org/all/20251009142917.517229-1-kartikey406@gmail.com/T/ Link: https://lkml.kernel.org/r/20251009154903.522339-1-kartikey406@gmail.com Signed-off-by: Deepanshu Kartikey <kartikey406(a)gmail.com> Reported-by: syzbot+6fdd8fa3380730a4b22c(a)syzkaller.appspotmail.com Tested-by: syzbot+6fdd8fa3380730a4b22c(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?id=2959889e1f6e216585ce522f7e8bc002b46ad9… Reviewed-by: Mark Fasheh <mark(a)fasheh.com> Reviewed-by: Joseph Qi <joseph.qi(a)linux.alibaba.com> Cc: Joel Becker <jlbec(a)evilplan.org> Cc: Junxiao Bi <junxiao.bi(a)oracle.com> Cc: Changwei Ge <gechangwei(a)live.cn> Cc: Jun Piao <piaojun(a)huawei.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- fs/ocfs2/move_extents.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/fs/ocfs2/move_extents.c~ocfs2-clear-extent-cache-after-moving-defragmenting-extents +++ a/fs/ocfs2/move_extents.c @@ -867,6 +867,11 @@ static int __ocfs2_move_extents_range(st mlog_errno(ret); goto out; } + /* + * Invalidate extent cache after moving/defragging to prevent + * stale cached data with outdated extent flags. + */ + ocfs2_extent_map_trunc(inode, cpos); context->clusters_moved += alloc_size; next: _ Patches currently in -mm which might be from kartikey406(a)gmail.com are hugetlbfs-check-for-shareable-lock-before-calling-huge_pmd_unshare.patch ocfs2-clear-extent-cache-after-moving-defragmenting-extents.patch

1 month, 3 weeks

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[PATCH v2 00/10] pmdomain: samsung: add supoort for Google GS101

by André Draszik

Hi, This series adds support for the power domains on Google GS101. It's fairly similar to SoCs already supported by this driver, except that register acces does not work via plain ioremap() / readl() / writel(). Instead, the regmap created by the PMU driver must be used (which uses Arm SMCC calls under the hood). The DT update to add the new required properties on gs101 will be posted separately. Signed-off-by: André Draszik <andre.draszik(a)linaro.org> --- Changes in v2: - Krzysztof: - move google,gs101-pmu binding into separate file - mark devm_kstrdup_const() patch as fix - use bool for need_early_sync_state - merge patches 8 and 10 from v1 series into one patch - collect tags - Link to v1: https://lore.kernel.org/r/20251006-gs101-pd-v1-0-f0cb0c01ea7b@linaro.org --- André Draszik (10): dt-bindings: power: samsung: add google,gs101-pd dt-bindings: soc: samsung: exynos-pmu: move gs101-pmu into separate binding dt-bindings: soc: samsung: gs101-pmu: allow power domains as children pmdomain: samsung: plug potential memleak during probe pmdomain: samsung: convert to using regmap pmdomain: samsung: convert to regmap_read_poll_timeout() pmdomain: samsung: don't hardcode offset for registers to 0 and 4 pmdomain: samsung: selectively handle enforced sync_state pmdomain: samsung: add support for google,gs101-pd pmdomain: samsung: use dev_err() instead of pr_err() .../devicetree/bindings/power/pd-samsung.yaml | 1 + .../bindings/soc/google/google,gs101-pmu.yaml | 107 +++++++++++++++++ .../bindings/soc/samsung/exynos-pmu.yaml | 20 ---- MAINTAINERS | 1 + drivers/pmdomain/samsung/exynos-pm-domains.c | 126 +++++++++++++++------ 5 files changed, 201 insertions(+), 54 deletions(-) --- base-commit: a5f97c90e75f09f24ece2dca34168722b140a798 change-id: 20251001-gs101-pd-d4dc97d70a84 Best regards, -- André Draszik <andre.draszik(a)linaro.org>

1 month, 3 weeks

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+ dma-debug-dont-report-false-positives-with-dma_bounce_unaligned_kmalloc.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: dma-debug: don't report false positives with DMA_BOUNCE_UNALIGNED_KMALLOC has been added to the -mm mm-hotfixes-unstable branch. Its filename is dma-debug-dont-report-false-positives-with-dma_bounce_unaligned_kmalloc.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Marek Szyprowski <m.szyprowski(a)samsung.com> Subject: dma-debug: don't report false positives with DMA_BOUNCE_UNALIGNED_KMALLOC Date: Thu, 9 Oct 2025 16:15:08 +0200 Commit 370645f41e6e ("dma-mapping: force bouncing if the kmalloc() size is not cache-line-aligned") introduced DMA_BOUNCE_UNALIGNED_KMALLOC feature and lets architecture specific code to configure kmalloc slabs with sizes smaller than the value of dma_get_cache_alignment(). When that feature is enabled, the physical address of some small kmalloc()-ed buffers might be not aligned to the CPU cachelines, thus not really suitable for typical DMA. To properly handle that case a SWIOTLB buffer bouncing is used, so no CPU cache corruption occurs. When that happens, there is no point reporting a false-positive DMA-API warning that the buffer is not properly aligned, as this is not a client driver fault. Link: https://lkml.kernel.org/r/20251009141508.2342138-1-m.szyprowski@samsung.com Fixes: 370645f41e6e ("dma-mapping: force bouncing if the kmalloc() size is not cache-line-aligned") Signed-off-by: Marek Szyprowski <m.szyprowski(a)samsung.com> Cc: Catalin Marinas <catalin.marinas(a)arm.com> Cc: Christoph Hellwig <hch(a)lst.de> Cc: Inki Dae <m.szyprowski(a)samsung.com> Cc: Robin Murohy <robin.murphy(a)arm.com> Cc: "Isaac J. Manjarres" <isaacmanjarres(a)google.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- kernel/dma/debug.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/kernel/dma/debug.c~dma-debug-dont-report-false-positives-with-dma_bounce_unaligned_kmalloc +++ a/kernel/dma/debug.c @@ -23,6 +23,7 @@ #include <linux/ctype.h> #include <linux/list.h> #include <linux/slab.h> +#include <linux/swiotlb.h> #include <asm/sections.h> #include "debug.h" @@ -594,7 +595,9 @@ static void add_dma_entry(struct dma_deb if (rc == -ENOMEM) { pr_err_once("cacheline tracking ENOMEM, dma-debug disabled\n"); global_disable = true; - } else if (rc == -EEXIST && !(attrs & DMA_ATTR_SKIP_CPU_SYNC)) { + } else if (rc == -EEXIST && !(attrs & DMA_ATTR_SKIP_CPU_SYNC) && + !(IS_ENABLED(CONFIG_DMA_BOUNCE_UNALIGNED_KMALLOC) && + is_swiotlb_allocated())) { err_printk(entry->dev, entry, "cacheline tracking EEXIST, overlapping mappings aren't supported\n"); } _ Patches currently in -mm which might be from m.szyprowski(a)samsung.com are dma-debug-dont-report-false-positives-with-dma_bounce_unaligned_kmalloc.patch

1 month, 3 weeks

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[PATCH] exfat: fix out-of-bounds in exfat_nls_to_ucs2()

by Jeongjun Park

After the loop that converts characters to ucs2 ends, the variable i may be greater than or equal to len. However, when checking whether the last byte of p_cstring is NULL, the variable i is used as is, resulting in an out-of-bounds read if i >= len. Therefore, to prevent this, we need to modify the function to check whether i is less than len, and if i is greater than or equal to len, to check p_cstring[len - 1] byte. Cc: <stable(a)vger.kernel.org> Reported-by: syzbot+98cc76a76de46b3714d4(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=98cc76a76de46b3714d4 Fixes: 370e812b3ec1 ("exfat: add nls operations") Signed-off-by: Jeongjun Park <aha310510(a)gmail.com> --- fs/exfat/nls.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/exfat/nls.c b/fs/exfat/nls.c index 8243d94ceaf4..a52f3494eb20 100644 --- a/fs/exfat/nls.c +++ b/fs/exfat/nls.c @@ -616,7 +616,7 @@ static int exfat_nls_to_ucs2(struct super_block *sb, unilen++; } - if (p_cstring[i] != '\0') + if (p_cstring[min(i, len - 1)] != '\0') lossy |= NLS_NAME_OVERLEN; *uniname = '\0'; --

1 month, 3 weeks

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[for-linus][PATCH 5/5] tracing: Have trace_marker use per-cpu data to read user space

by Steven Rostedt

From: Steven Rostedt <rostedt(a)goodmis.org> It was reported that using __copy_from_user_inatomic() can actually schedule. Which is bad when preemption is disabled. Even though there's logic to check in_atomic() is set, but this is a nop when the kernel is configured with PREEMPT_NONE. This is due to page faulting and the code could schedule with preemption disabled. Link: https://lore.kernel.org/all/20250819105152.2766363-1-luogengkun@huaweicloud… The solution was to change the __copy_from_user_inatomic() to copy_from_user_nofault(). But then it was reported that this caused a regression in Android. There's several applications writing into trace_marker() in Android, but now instead of showing the expected data, it is showing: tracing_mark_write: <faulted> After reverting the conversion to copy_from_user_nofault(), Android was able to get the data again. Writes to the trace_marker is a way to efficiently and quickly enter data into the Linux tracing buffer. It takes no locks and was designed to be as non-intrusive as possible. This means it cannot allocate memory, and must use pre-allocated data. A method that is actively being worked on to have faultable system call tracepoints read user space data is to allocate per CPU buffers, and use them in the callback. The method uses a technique similar to seqcount. That is something like this: preempt_disable(); cpu = smp_processor_id(); buffer = this_cpu_ptr(&pre_allocated_cpu_buffers, cpu); do { cnt = nr_context_switches_cpu(cpu); migrate_disable(); preempt_enable(); ret = copy_from_user(buffer, ptr, size); preempt_disable(); migrate_enable(); } while (!ret && cnt != nr_context_switches_cpu(cpu)); if (!ret) ring_buffer_write(buffer); preempt_enable(); It's a little more involved than that, but the above is the basic logic. The idea is to acquire the current CPU buffer, disable migration, and then enable preemption. At this moment, it can safely use copy_from_user(). After reading the data from user space, it disables preemption again. It then checks to see if there was any new scheduling on this CPU. If there was, it must assume that the buffer was corrupted by another task. If there wasn't, then the buffer is still valid as only tasks in preemptable context can write to this buffer and only those that are running on the CPU. By using this method, where trace_marker open allocates the per CPU buffers, trace_marker writes can access user space and even fault it in, without having to allocate or take any locks of its own. Cc: stable(a)vger.kernel.org Cc: Masami Hiramatsu <mhiramat(a)kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Cc: Luo Gengkun <luogengkun(a)huaweicloud.com> Cc: Wattson CI <wattson-external(a)google.com> Cc: Linus Torvalds <torvalds(a)linux-foundation.org> Link: https://lore.kernel.org/20251008124510.6dba541a@gandalf.local.home Fixes: 3d62ab32df065 ("tracing: Fix tracing_marker may trigger page fault during preempt_disable") Reported-by: Runping Lai <runpinglai(a)google.com> Tested-by: Runping Lai <runpinglai(a)google.com> Closes: https://lore.kernel.org/linux-trace-kernel/20251007003417.3470979-2-runping… Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org> --- kernel/trace/trace.c | 268 +++++++++++++++++++++++++++++++++++-------- 1 file changed, 220 insertions(+), 48 deletions(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index b3c94fbaf002..0fd582651293 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -4791,12 +4791,6 @@ int tracing_single_release_file_tr(struct inode *inode, struct file *filp) return single_release(inode, filp); } -static int tracing_mark_open(struct inode *inode, struct file *filp) -{ - stream_open(inode, filp); - return tracing_open_generic_tr(inode, filp); -} - static int tracing_release(struct inode *inode, struct file *file) { struct trace_array *tr = inode->i_private; @@ -7163,7 +7157,7 @@ tracing_free_buffer_release(struct inode *inode, struct file *filp) #define TRACE_MARKER_MAX_SIZE 4096 -static ssize_t write_marker_to_buffer(struct trace_array *tr, const char __user *ubuf, +static ssize_t write_marker_to_buffer(struct trace_array *tr, const char *buf, size_t cnt, unsigned long ip) { struct ring_buffer_event *event; @@ -7173,20 +7167,11 @@ static ssize_t write_marker_to_buffer(struct trace_array *tr, const char __user int meta_size; ssize_t written; size_t size; - int len; - -/* Used in tracing_mark_raw_write() as well */ -#define FAULTED_STR "<faulted>" -#define FAULTED_SIZE (sizeof(FAULTED_STR) - 1) /* '\0' is already accounted for */ meta_size = sizeof(*entry) + 2; /* add '\0' and possible '\n' */ again: size = cnt + meta_size; - /* If less than "<faulted>", then make sure we can still add that */ - if (cnt < FAULTED_SIZE) - size += FAULTED_SIZE - cnt; - buffer = tr->array_buffer.buffer; event = __trace_buffer_lock_reserve(buffer, TRACE_PRINT, size, tracing_gen_ctx()); @@ -7196,9 +7181,6 @@ static ssize_t write_marker_to_buffer(struct trace_array *tr, const char __user * make it smaller and try again. */ if (size > ring_buffer_max_event_size(buffer)) { - /* cnt < FAULTED size should never be bigger than max */ - if (WARN_ON_ONCE(cnt < FAULTED_SIZE)) - return -EBADF; cnt = ring_buffer_max_event_size(buffer) - meta_size; /* The above should only happen once */ if (WARN_ON_ONCE(cnt + meta_size == size)) @@ -7212,14 +7194,8 @@ static ssize_t write_marker_to_buffer(struct trace_array *tr, const char __user entry = ring_buffer_event_data(event); entry->ip = ip; - - len = copy_from_user_nofault(&entry->buf, ubuf, cnt); - if (len) { - memcpy(&entry->buf, FAULTED_STR, FAULTED_SIZE); - cnt = FAULTED_SIZE; - written = -EFAULT; - } else - written = cnt; + memcpy(&entry->buf, buf, cnt); + written = cnt; if (tr->trace_marker_file && !list_empty(&tr->trace_marker_file->triggers)) { /* do not add \n before testing triggers, but add \0 */ @@ -7243,6 +7219,169 @@ static ssize_t write_marker_to_buffer(struct trace_array *tr, const char __user return written; } +struct trace_user_buf { + char *buf; +}; + +struct trace_user_buf_info { + struct trace_user_buf __percpu *tbuf; + int ref; +}; + + +static DEFINE_MUTEX(trace_user_buffer_mutex); +static struct trace_user_buf_info *trace_user_buffer; + +static void trace_user_fault_buffer_free(struct trace_user_buf_info *tinfo) +{ + char *buf; + int cpu; + + for_each_possible_cpu(cpu) { + buf = per_cpu_ptr(tinfo->tbuf, cpu)->buf; + kfree(buf); + } + free_percpu(tinfo->tbuf); + kfree(tinfo); +} + +static int trace_user_fault_buffer_enable(void) +{ + struct trace_user_buf_info *tinfo; + char *buf; + int cpu; + + guard(mutex)(&trace_user_buffer_mutex); + + if (trace_user_buffer) { + trace_user_buffer->ref++; + return 0; + } + + tinfo = kmalloc(sizeof(*tinfo), GFP_KERNEL); + if (!tinfo) + return -ENOMEM; + + tinfo->tbuf = alloc_percpu(struct trace_user_buf); + if (!tinfo->tbuf) { + kfree(tinfo); + return -ENOMEM; + } + + tinfo->ref = 1; + + /* Clear each buffer in case of error */ + for_each_possible_cpu(cpu) { + per_cpu_ptr(tinfo->tbuf, cpu)->buf = NULL; + } + + for_each_possible_cpu(cpu) { + buf = kmalloc_node(TRACE_MARKER_MAX_SIZE, GFP_KERNEL, + cpu_to_node(cpu)); + if (!buf) { + trace_user_fault_buffer_free(tinfo); + return -ENOMEM; + } + per_cpu_ptr(tinfo->tbuf, cpu)->buf = buf; + } + + trace_user_buffer = tinfo; + + return 0; +} + +static void trace_user_fault_buffer_disable(void) +{ + struct trace_user_buf_info *tinfo; + + guard(mutex)(&trace_user_buffer_mutex); + + tinfo = trace_user_buffer; + + if (WARN_ON_ONCE(!tinfo)) + return; + + if (--tinfo->ref) + return; + + trace_user_fault_buffer_free(tinfo); + trace_user_buffer = NULL; +} + +/* Must be called with preemption disabled */ +static char *trace_user_fault_read(struct trace_user_buf_info *tinfo, + const char __user *ptr, size_t size, + size_t *read_size) +{ + int cpu = smp_processor_id(); + char *buffer = per_cpu_ptr(tinfo->tbuf, cpu)->buf; + unsigned int cnt; + int trys = 0; + int ret; + + if (size > TRACE_MARKER_MAX_SIZE) + size = TRACE_MARKER_MAX_SIZE; + *read_size = 0; + + /* + * This acts similar to a seqcount. The per CPU context switches are + * recorded, migration is disabled and preemption is enabled. The + * read of the user space memory is copied into the per CPU buffer. + * Preemption is disabled again, and if the per CPU context switches count + * is still the same, it means the buffer has not been corrupted. + * If the count is different, it is assumed the buffer is corrupted + * and reading must be tried again. + */ + + do { + /* + * If for some reason, copy_from_user() always causes a context + * switch, this would then cause an infinite loop. + * If this task is preempted by another user space task, it + * will cause this task to try again. But just in case something + * changes where the copying from user space causes another task + * to run, prevent this from going into an infinite loop. + * 100 tries should be plenty. + */ + if (WARN_ONCE(trys++ > 100, "Error: Too many tries to read user space")) + return NULL; + + /* Read the current CPU context switch counter */ + cnt = nr_context_switches_cpu(cpu); + + /* + * Preemption is going to be enabled, but this task must + * remain on this CPU. + */ + migrate_disable(); + + /* + * Now preemption is being enabed and another task can come in + * and use the same buffer and corrupt our data. + */ + preempt_enable_notrace(); + + ret = __copy_from_user(buffer, ptr, size); + + preempt_disable_notrace(); + migrate_enable(); + + /* if it faulted, no need to test if the buffer was corrupted */ + if (ret) + return NULL; + + /* + * Preemption is disabled again, now check the per CPU context + * switch counter. If it doesn't match, then another user space + * process may have schedule in and corrupted our buffer. In that + * case the copying must be retried. + */ + } while (nr_context_switches_cpu(cpu) != cnt); + + *read_size = size; + return buffer; +} + static ssize_t tracing_mark_write(struct file *filp, const char __user *ubuf, size_t cnt, loff_t *fpos) @@ -7250,6 +7389,8 @@ tracing_mark_write(struct file *filp, const char __user *ubuf, struct trace_array *tr = filp->private_data; ssize_t written = -ENODEV; unsigned long ip; + size_t size; + char *buf; if (tracing_disabled) return -EINVAL; @@ -7263,6 +7404,16 @@ tracing_mark_write(struct file *filp, const char __user *ubuf, if (cnt > TRACE_MARKER_MAX_SIZE) cnt = TRACE_MARKER_MAX_SIZE; + /* Must have preemption disabled while having access to the buffer */ + guard(preempt_notrace)(); + + buf = trace_user_fault_read(trace_user_buffer, ubuf, cnt, &size); + if (!buf) + return -EFAULT; + + if (cnt > size) + cnt = size; + /* The selftests expect this function to be the IP address */ ip = _THIS_IP_; @@ -7270,32 +7421,27 @@ tracing_mark_write(struct file *filp, const char __user *ubuf, if (tr == &global_trace) { guard(rcu)(); list_for_each_entry_rcu(tr, &marker_copies, marker_list) { - written = write_marker_to_buffer(tr, ubuf, cnt, ip); + written = write_marker_to_buffer(tr, buf, cnt, ip); if (written < 0) break; } } else { - written = write_marker_to_buffer(tr, ubuf, cnt, ip); + written = write_marker_to_buffer(tr, buf, cnt, ip); } return written; } static ssize_t write_raw_marker_to_buffer(struct trace_array *tr, - const char __user *ubuf, size_t cnt) + const char *buf, size_t cnt) { struct ring_buffer_event *event; struct trace_buffer *buffer; struct raw_data_entry *entry; ssize_t written; - int size; - int len; - -#define FAULT_SIZE_ID (FAULTED_SIZE + sizeof(int)) + size_t size; size = sizeof(*entry) + cnt; - if (cnt < FAULT_SIZE_ID) - size += FAULT_SIZE_ID - cnt; buffer = tr->array_buffer.buffer; @@ -7309,14 +7455,8 @@ static ssize_t write_raw_marker_to_buffer(struct trace_array *tr, return -EBADF; entry = ring_buffer_event_data(event); - - len = copy_from_user_nofault(&entry->id, ubuf, cnt); - if (len) { - entry->id = -1; - memcpy(&entry->buf, FAULTED_STR, FAULTED_SIZE); - written = -EFAULT; - } else - written = cnt; + memcpy(&entry->id, buf, cnt); + written = cnt; __buffer_unlock_commit(buffer, event); @@ -7329,8 +7469,8 @@ tracing_mark_raw_write(struct file *filp, const char __user *ubuf, { struct trace_array *tr = filp->private_data; ssize_t written = -ENODEV; - -#define FAULT_SIZE_ID (FAULTED_SIZE + sizeof(int)) + size_t size; + char *buf; if (tracing_disabled) return -EINVAL; @@ -7342,6 +7482,17 @@ tracing_mark_raw_write(struct file *filp, const char __user *ubuf, if (cnt < sizeof(unsigned int)) return -EINVAL; + /* Must have preemption disabled while having access to the buffer */ + guard(preempt_notrace)(); + + buf = trace_user_fault_read(trace_user_buffer, ubuf, cnt, &size); + if (!buf) + return -EFAULT; + + /* raw write is all or nothing */ + if (cnt > size) + return -EINVAL; + /* The global trace_marker_raw can go to multiple instances */ if (tr == &global_trace) { guard(rcu)(); @@ -7357,6 +7508,27 @@ tracing_mark_raw_write(struct file *filp, const char __user *ubuf, return written; } +static int tracing_mark_open(struct inode *inode, struct file *filp) +{ + int ret; + + ret = trace_user_fault_buffer_enable(); + if (ret < 0) + return ret; + + stream_open(inode, filp); + ret = tracing_open_generic_tr(inode, filp); + if (ret < 0) + trace_user_fault_buffer_disable(); + return ret; +} + +static int tracing_mark_release(struct inode *inode, struct file *file) +{ + trace_user_fault_buffer_disable(); + return tracing_release_generic_tr(inode, file); +} + static int tracing_clock_show(struct seq_file *m, void *v) { struct trace_array *tr = m->private; @@ -7764,13 +7936,13 @@ static const struct file_operations tracing_free_buffer_fops = { static const struct file_operations tracing_mark_fops = { .open = tracing_mark_open, .write = tracing_mark_write, - .release = tracing_release_generic_tr, + .release = tracing_mark_release, }; static const struct file_operations tracing_mark_raw_fops = { .open = tracing_mark_open, .write = tracing_mark_raw_write, - .release = tracing_release_generic_tr, + .release = tracing_mark_release, }; static const struct file_operations trace_clock_fops = { -- 2.51.0

1 month, 3 weeks

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[for-linus][PATCH 4/5] ring buffer: Propagate __rb_map_vma return value to caller

by Steven Rostedt

From: Ankit Khushwaha <ankitkhushwaha.linux(a)gmail.com> The return value from `__rb_map_vma()`, which rejects writable or executable mappings (VM_WRITE, VM_EXEC, or !VM_MAYSHARE), was being ignored. As a result the caller of `__rb_map_vma` always returned 0 even when the mapping had actually failed, allowing it to proceed with an invalid VMA. Cc: stable(a)vger.kernel.org Cc: Masami Hiramatsu <mhiramat(a)kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Link: https://lore.kernel.org/20251008172516.20697-1-ankitkhushwaha.linux@gmail.c… Fixes: 117c39200d9d7 ("ring-buffer: Introducing ring-buffer mapping functions") Reported-by: syzbot+ddc001b92c083dbf2b97(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?id=194151be8eaebd826005329b2e123aecae714b… Signed-off-by: Ankit Khushwaha <ankitkhushwaha.linux(a)gmail.com> Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org> --- kernel/trace/ring_buffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index 43460949ad3f..1244d2c5c384 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -7273,7 +7273,7 @@ int ring_buffer_map(struct trace_buffer *buffer, int cpu, atomic_dec(&cpu_buffer->resize_disabled); } - return 0; + return err; } int ring_buffer_unmap(struct trace_buffer *buffer, int cpu) -- 2.51.0

1 month, 3 weeks

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[for-linus][PATCH 3/5] tracing: Fix irqoff tracers on failure of acquiring calltime

by Steven Rostedt

From: Steven Rostedt <rostedt(a)goodmis.org> The functions irqsoff_graph_entry() and irqsoff_graph_return() both call func_prolog_dec() that will test if the data->disable is already set and if not, increment it and return. If it was set, it returns false and the caller exits. The caller of this function must decrement the disable counter, but misses doing so if the calltime fails to be acquired. Instead of exiting out when calltime is NULL, change the logic to do the work if it is not NULL and still do the clean up at the end of the function if it is NULL. Cc: stable(a)vger.kernel.org Cc: Masami Hiramatsu <mhiramat(a)kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Link: https://lore.kernel.org/20251008114943.6f60f30f@gandalf.local.home Fixes: a485ea9e3ef3 ("tracing: Fix irqsoff and wakeup latency tracers when using function graph") Reported-by: Sasha Levin <sashal(a)kernel.org> Closes: https://lore.kernel.org/linux-trace-kernel/20251006175848.1906912-2-sashal@… Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org> --- kernel/trace/trace_irqsoff.c | 23 ++++++++++------------- 1 file changed, 10 insertions(+), 13 deletions(-) diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c index 5496758b6c76..4c45c49b06c8 100644 --- a/kernel/trace/trace_irqsoff.c +++ b/kernel/trace/trace_irqsoff.c @@ -184,7 +184,7 @@ static int irqsoff_graph_entry(struct ftrace_graph_ent *trace, unsigned long flags; unsigned int trace_ctx; u64 *calltime; - int ret; + int ret = 0; if (ftrace_graph_ignore_func(gops, trace)) return 0; @@ -202,13 +202,11 @@ static int irqsoff_graph_entry(struct ftrace_graph_ent *trace, return 0; calltime = fgraph_reserve_data(gops->idx, sizeof(*calltime)); - if (!calltime) - return 0; - - *calltime = trace_clock_local(); - - trace_ctx = tracing_gen_ctx_flags(flags); - ret = __trace_graph_entry(tr, trace, trace_ctx); + if (calltime) { + *calltime = trace_clock_local(); + trace_ctx = tracing_gen_ctx_flags(flags); + ret = __trace_graph_entry(tr, trace, trace_ctx); + } local_dec(&data->disabled); return ret; @@ -233,11 +231,10 @@ static void irqsoff_graph_return(struct ftrace_graph_ret *trace, rettime = trace_clock_local(); calltime = fgraph_retrieve_data(gops->idx, &size); - if (!calltime) - return; - - trace_ctx = tracing_gen_ctx_flags(flags); - __trace_graph_return(tr, trace, trace_ctx, *calltime, rettime); + if (calltime) { + trace_ctx = tracing_gen_ctx_flags(flags); + __trace_graph_return(tr, trace, trace_ctx, *calltime, rettime); + } local_dec(&data->disabled); } -- 2.51.0

1 month, 3 weeks

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[for-linus][PATCH 2/5] tracing: Fix wakeup tracers on failure of acquiring calltime

by Steven Rostedt

From: Steven Rostedt <rostedt(a)goodmis.org> The functions wakeup_graph_entry() and wakeup_graph_return() both call func_prolog_preempt_disable() that will test if the data->disable is already set and if not, increment it and disable preemption. If it was set, it returns false and the caller exits. The caller of this function must decrement the disable counter, but misses doing so if the calltime fails to be acquired. Instead of exiting out when calltime is NULL, change the logic to do the work if it is not NULL and still do the clean up at the end of the function if it is NULL. Cc: stable(a)vger.kernel.org Cc: Masami Hiramatsu <mhiramat(a)kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com> Link: https://lore.kernel.org/20251008114835.027b878a@gandalf.local.home Fixes: a485ea9e3ef3 ("tracing: Fix irqsoff and wakeup latency tracers when using function graph") Reported-by: Sasha Levin <sashal(a)kernel.org> Closes: https://lore.kernel.org/linux-trace-kernel/20251006175848.1906912-1-sashal@… Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org> --- kernel/trace/trace_sched_wakeup.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c index bf1cb80742ae..e3f2e4f56faa 100644 --- a/kernel/trace/trace_sched_wakeup.c +++ b/kernel/trace/trace_sched_wakeup.c @@ -138,12 +138,10 @@ static int wakeup_graph_entry(struct ftrace_graph_ent *trace, return 0; calltime = fgraph_reserve_data(gops->idx, sizeof(*calltime)); - if (!calltime) - return 0; - - *calltime = trace_clock_local(); - - ret = __trace_graph_entry(tr, trace, trace_ctx); + if (calltime) { + *calltime = trace_clock_local(); + ret = __trace_graph_entry(tr, trace, trace_ctx); + } local_dec(&data->disabled); preempt_enable_notrace(); @@ -169,12 +167,10 @@ static void wakeup_graph_return(struct ftrace_graph_ret *trace, rettime = trace_clock_local(); calltime = fgraph_retrieve_data(gops->idx, &size); - if (!calltime) - return; + if (calltime) + __trace_graph_return(tr, trace, trace_ctx, *calltime, rettime); - __trace_graph_return(tr, trace, trace_ctx, *calltime, rettime); local_dec(&data->disabled); - preempt_enable_notrace(); return; } -- 2.51.0

1 month, 3 weeks

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[PATCH] nvmet: pci-epf: Move DMA initialization to EPC init callback

by Niklas Cassel

From: Shin'ichiro Kawasaki <shinichiro.kawasaki(a)wdc.com> For DMA initialization to work across all EPC drivers, the DMA initialization has to be done in the .init() callback. This is because not all EPC drivers will have a refclock (which is often needed to access registers of a DMA controller embedded in a PCIe controller) at the time the .bind() callback is called. However, all EPC drivers are guaranteed to have a refclock by the time the .init() callback is called. Thus, move the DMA initialization to the .init() callback. This change was already done for other EPF drivers in commit 60bd3e039aa2 ("PCI: endpoint: pci-epf-{mhi/test}: Move DMA initialization to EPC init callback"). Cc: stable(a)vger.kernel.org Fixes: 0faa0fe6f90e ("nvmet: New NVMe PCI endpoint function target driver") Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki(a)wdc.com> Signed-off-by: Niklas Cassel <cassel(a)kernel.org> --- drivers/nvme/target/pci-epf.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/nvme/target/pci-epf.c b/drivers/nvme/target/pci-epf.c index 2e78397a7373a..9c5b0f78ce8df 100644 --- a/drivers/nvme/target/pci-epf.c +++ b/drivers/nvme/target/pci-epf.c @@ -2325,6 +2325,8 @@ static int nvmet_pci_epf_epc_init(struct pci_epf *epf) return ret; } + nvmet_pci_epf_init_dma(nvme_epf); + /* Set device ID, class, etc. */ epf->header->vendorid = ctrl->tctrl->subsys->vendor_id; epf->header->subsys_vendor_id = ctrl->tctrl->subsys->subsys_vendor_id; @@ -2422,8 +2424,6 @@ static int nvmet_pci_epf_bind(struct pci_epf *epf) if (ret) return ret; - nvmet_pci_epf_init_dma(nvme_epf); - return 0; } -- 2.51.0

1 month, 3 weeks

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[PATCH] drm/xe: Increase global invalidation timeout to 1000us

by Kenneth Graunke

The previous timeout of 500us seems to be too small; panning the map in the Roll20 VTT in Firefox on a KDE/Wayland desktop reliably triggered timeouts within a few seconds of usage, causing the monitor to freeze and the following to be printed to dmesg: [Jul30 13:44] xe 0000:03:00.0: [drm] *ERROR* GT0: Global invalidation timeout [Jul30 13:48] xe 0000:03:00.0: [drm] *ERROR* [CRTC:82:pipe A] flip_done timed out I haven't hit a single timeout since increasing it to 1000us even after several multi-hour testing sessions. Fixes: c0114fdf6d4a ("drm/xe: Move DSB l2 flush to a more sensible place") Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/5710 Signed-off-by: Kenneth Graunke <kenneth(a)whitecape.org> Cc: stable(a)vger.kernel.org Cc: Maarten Lankhorst <dev(a)lankhorst.se> --- drivers/gpu/drm/xe/xe_device.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) This fixes my desktop which has been broken since 6.15. Given that https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/6097 was recently filed and they seem to need a timeout of 2000 (and are having somewhat different issues), maybe more work's needed here...but I figured I'd send out the fix for my system and let xe folks figure out what they'd like to do. Thanks :) diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c index a4d12ee7d575..6339b8800914 100644 --- a/drivers/gpu/drm/xe/xe_device.c +++ b/drivers/gpu/drm/xe/xe_device.c @@ -1064,7 +1064,7 @@ void xe_device_l2_flush(struct xe_device *xe) spin_lock(&gt->global_invl_lock); xe_mmio_write32(&gt->mmio, XE2_GLOBAL_INVAL, 0x1); - if (xe_mmio_wait32(&gt->mmio, XE2_GLOBAL_INVAL, 0x1, 0x0, 500, NULL, true)) + if (xe_mmio_wait32(&gt->mmio, XE2_GLOBAL_INVAL, 0x1, 0x0, 1000, NULL, true)) xe_gt_err_once(gt, "Global invalidation timeout\n"); spin_unlock(&gt->global_invl_lock); -- 2.51.0

1 month, 3 weeks

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[PATCH v2] Revert "drm/amd/display: Only restore backlight after amdgpu_dm_init or dm_resume"

by Matthew Schwartz

This fix regressed the original issue that commit d83c747a1225 ("drm/amd/display: Fix brightness level not retained over reboot") solved, so revert it until a different approach to solve the regression that it caused with AMD_PRIVATE_COLOR is found. Fixes: a490c8d77d50 ("drm/amd/display: Only restore backlight after amdgpu_dm_init or dm_resume") Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4620 Cc: stable(a)vger.kernel.org Signed-off-by: Matthew Schwartz <matthew.schwartz(a)linux.dev> --- v1 -> v2: - Fix missing stable tag --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 12 ++++-------- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 7 ------- 2 files changed, 4 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 8e1622bf7a42..21281e684b84 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2081,8 +2081,6 @@ static int amdgpu_dm_init(struct amdgpu_device *adev) dc_hardware_init(adev->dm.dc); - adev->dm.restore_backlight = true; - adev->dm.hpd_rx_offload_wq = hpd_rx_irq_create_workqueue(adev); if (!adev->dm.hpd_rx_offload_wq) { drm_err(adev_to_drm(adev), "failed to create hpd rx offload workqueue.\n"); @@ -3438,7 +3436,6 @@ static int dm_resume(struct amdgpu_ip_block *ip_block) dc_set_power_state(dm->dc, DC_ACPI_CM_POWER_STATE_D0); dc_resume(dm->dc); - adev->dm.restore_backlight = true; amdgpu_dm_irq_resume_early(adev); @@ -9965,6 +9962,7 @@ static void amdgpu_dm_commit_streams(struct drm_atomic_state *state, bool mode_set_reset_required = false; u32 i; struct dc_commit_streams_params params = {dc_state->streams, dc_state->stream_count}; + bool set_backlight_level = false; /* Disable writeback */ for_each_old_connector_in_state(state, connector, old_con_state, i) { @@ -10084,6 +10082,7 @@ static void amdgpu_dm_commit_streams(struct drm_atomic_state *state, acrtc->hw_mode = new_crtc_state->mode; crtc->hwmode = new_crtc_state->mode; mode_set_reset_required = true; + set_backlight_level = true; } else if (modereset_required(new_crtc_state)) { drm_dbg_atomic(dev, "Atomic commit: RESET. crtc id %d:[%p]\n", @@ -10140,16 +10139,13 @@ static void amdgpu_dm_commit_streams(struct drm_atomic_state *state, * to fix a flicker issue. * It will cause the dm->actual_brightness is not the current panel brightness * level. (the dm->brightness is the correct panel level) - * So we set the backlight level with dm->brightness value after initial - * set mode. Use restore_backlight flag to avoid setting backlight level - * for every subsequent mode set. + * So we set the backlight level with dm->brightness value after set mode */ - if (dm->restore_backlight) { + if (set_backlight_level) { for (i = 0; i < dm->num_of_edps; i++) { if (dm->backlight_dev[i]) amdgpu_dm_backlight_set_level(dm, i, dm->brightness[i]); } - dm->restore_backlight = false; } } diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h index 009f206226f0..db75e991ac7b 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h @@ -630,13 +630,6 @@ struct amdgpu_display_manager { */ u32 actual_brightness[AMDGPU_DM_MAX_NUM_EDP]; - /** - * @restore_backlight: - * - * Flag to indicate whether to restore backlight after modeset. - */ - bool restore_backlight; - /** * @aux_hpd_discon_quirk: * -- 2.51.0

1 month, 3 weeks

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[PATCH 6.12 00/10] 6.12.51-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 6.12.51 release. There are 10 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Sun, 05 Oct 2025 16:02:25 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.12.51-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.12.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 6.12.51-rc1 Srinivas Kandagatla <srinivas.kandagatla(a)oss.qualcomm.com> ASoC: qcom: audioreach: fix potential null pointer dereference Matvey Kovalev <matvey.kovalev(a)ispras.ru> wifi: ath11k: fix NULL dereference in ath11k_qmi_m3_load() Charan Teja Kalla <charan.kalla(a)oss.qualcomm.com> mm: swap: check for stable address space before operating on the VMA Thadeu Lima de Souza Cascardo <cascardo(a)igalia.com> media: uvcvideo: Mark invalid entities with id UVC_INVALID_ENTITY_ID Larshin Sergey <Sergey.Larshin(a)kaspersky.com> media: rc: fix races with imon_disconnect() Duoming Zhou <duoming(a)zju.edu.cn> media: tuner: xc5000: Fix use-after-free in xc5000_release Duoming Zhou <duoming(a)zju.edu.cn> media: b2c2: Fix use-after-free causing by irq_check_work in flexcop_pci_remove Wang Haoran <haoranwangsec(a)gmail.com> scsi: target: target_core_configfs: Add length check to avoid buffer overflow Kees Cook <kees(a)kernel.org> gcc-plugins: Remove TODO_verify_il for GCC >= 16 Breno Leitao <leitao(a)debian.org> crypto: sha256 - fix crash at kexec ------------- Diffstat: Makefile | 4 +- drivers/media/pci/b2c2/flexcop-pci.c | 2 +- drivers/media/rc/imon.c | 27 +++++++++---- drivers/media/tuners/xc5000.c | 2 +- drivers/media/usb/uvc/uvc_driver.c | 73 ++++++++++++++++++++++------------- drivers/media/usb/uvc/uvcvideo.h | 2 + drivers/net/wireless/ath/ath11k/qmi.c | 2 +- drivers/target/target_core_configfs.c | 2 +- include/crypto/sha256_base.h | 2 +- mm/swapfile.c | 3 ++ scripts/gcc-plugins/gcc-common.h | 7 ++++ sound/soc/qcom/qdsp6/topology.c | 4 +- 12 files changed, 87 insertions(+), 43 deletions(-)

1 month, 3 weeks

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[PATCH 6.6.y 0/2] riscv: mm: Backport of mmap hint address fixes

by Vivian Wang

Backport of the two riscv mmap patches from master. In effect, these two patches removes arch_get_mmap_{base,end} for riscv. Guo Ren: Please take a look. Patch 1 has a slightly non-trivial conflict with your commit 97b7ac69be2e ("riscv: mm: Fixup compat arch_get_mmap_end"), which changed STACK_TOP_MAX from TASK_SIZE_64 to TASK_SIZE when CONFIG_64BIT=y. This shouldn't be a problem, but, well, just to be safe. --- Charlie Jenkins (2): riscv: mm: Use hint address in mmap if available riscv: mm: Do not restrict mmap address based on hint arch/riscv/include/asm/processor.h | 33 +++++---------------------------- 1 file changed, 5 insertions(+), 28 deletions(-) --- base-commit: 60a9e718726fa7019ae00916e4b1c52498da5b60 change-id: 20250917-riscv-mmap-addr-space-6-6-15e7db6b5db6 Best regards, -- Vivian "dramforever" Wang

1 month, 3 weeks

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[PATCH 6.1.y] spi: microchip-core: ensure TX and RX FIFOs are empty at start of a transfer

by jianqi.ren.cn＠windriver.com

From: Steve Wilkins <steve.wilkins(a)raymarine.com> [ Upstream commit 9cf71eb0faef4bff01df4264841b8465382d7927 ] While transmitting with rx_len == 0, the RX FIFO is not going to be emptied in the interrupt handler. A subsequent transfer could then read crap from the previous transfer out of the RX FIFO into the start RX buffer. The core provides a register that will empty the RX and TX FIFOs, so do that before each transfer. Fixes: 9ac8d17694b6 ("spi: add support for microchip fpga spi controllers") Signed-off-by: Steve Wilkins <steve.wilkins(a)raymarine.com> Signed-off-by: Conor Dooley <conor.dooley(a)microchip.com> Link: https://patch.msgid.link/20240715-flammable-provoke-459226d08e70@wendy Signed-off-by: Mark Brown <broonie(a)kernel.org> [Minor conflict resolved due to code context change.] Signed-off-by: Jianqi Ren <jianqi.ren.cn(a)windriver.com> Signed-off-by: He Zhe <zhe.he(a)windriver.com> --- Verified the build test --- drivers/spi/spi-microchip-core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/spi/spi-microchip-core.c b/drivers/spi/spi-microchip-core.c index bfad0fe743ad..acc05f5a929e 100644 --- a/drivers/spi/spi-microchip-core.c +++ b/drivers/spi/spi-microchip-core.c @@ -91,6 +91,8 @@ #define REG_CONTROL2 (0x28) #define REG_COMMAND (0x2c) #define COMMAND_CLRFRAMECNT BIT(4) +#define COMMAND_TXFIFORST BIT(3) +#define COMMAND_RXFIFORST BIT(2) #define REG_PKTSIZE (0x30) #define REG_CMD_SIZE (0x34) #define REG_HWSTATUS (0x38) @@ -489,6 +491,8 @@ static int mchp_corespi_transfer_one(struct spi_controller *host, mchp_corespi_set_xfer_size(spi, (spi->tx_len > FIFO_DEPTH) ? FIFO_DEPTH : spi->tx_len); + mchp_corespi_write(spi, REG_COMMAND, COMMAND_RXFIFORST | COMMAND_TXFIFORST); + while (spi->tx_len) mchp_corespi_write_fifo(spi); -- 2.34.1

1 month, 3 weeks

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[PATCH 6.12.y 6.6.y 6.1.y 5.15.y 5.10.y 5.4.y] ALSA: usb-audio: Kill timer properly at removal

by Jeongjun Park

From: Takashi Iwai <tiwai(a)suse.de> [ Upstream commit 0718a78f6a9f04b88d0dc9616cc216b31c5f3cf1 ] The USB-audio MIDI code initializes the timer, but in a rare case, the driver might be freed without the disconnect call. This leaves the timer in an active state while the assigned object is released via snd_usbmidi_free(), which ends up with a kernel warning when the debug configuration is enabled, as spotted by fuzzer. For avoiding the problem, put timer_shutdown_sync() at snd_usbmidi_free(), so that the timer can be killed properly. While we're at it, replace the existing timer_delete_sync() at the disconnect callback with timer_shutdown_sync(), too. Reported-by: syzbot+d8f72178ab6783a7daea(a)syzkaller.appspotmail.com Closes: https://lore.kernel.org/681c70d7.050a0220.a19a9.00c6.GAE@google.com Cc: <stable(a)vger.kernel.org> Link: https://patch.msgid.link/20250519212031.14436-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai(a)suse.de> [ del_timer vs timer_delete differences ] Signed-off-by: Jeongjun Park <aha310510(a)gmail.com> --- sound/usb/midi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/usb/midi.c b/sound/usb/midi.c index a792ada18863..c3de2b137435 100644 --- a/sound/usb/midi.c +++ b/sound/usb/midi.c @@ -1530,6 +1530,7 @@ static void snd_usbmidi_free(struct snd_usb_midi *umidi) snd_usbmidi_in_endpoint_delete(ep->in); } mutex_destroy(&umidi->mutex); + timer_shutdown_sync(&umidi->error_timer); kfree(umidi); } @@ -1553,7 +1554,7 @@ void snd_usbmidi_disconnect(struct list_head *p) spin_unlock_irq(&umidi->disc_lock); up_write(&umidi->disc_rwsem); - del_timer_sync(&umidi->error_timer); + timer_shutdown_sync(&umidi->error_timer); for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { struct snd_usb_midi_endpoint *ep = &umidi->endpoints[i]; --

1 month, 3 weeks

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[PATCH] mfd: altera-sysmgr: fix device leak on sysmgr regmap lookup

by Johan Hovold

Make sure to drop the reference taken to the sysmgr platform device when retrieving its driver data. Note that holding a reference to a device does not prevent its driver data from going away. Fixes: f36e789a1f8d ("mfd: altera-sysmgr: Add SOCFPGA System Manager") Cc: stable(a)vger.kernel.org # 5.2 Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/mfd/altera-sysmgr.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mfd/altera-sysmgr.c b/drivers/mfd/altera-sysmgr.c index fb5f988e61f3..90c6902d537d 100644 --- a/drivers/mfd/altera-sysmgr.c +++ b/drivers/mfd/altera-sysmgr.c @@ -117,6 +117,8 @@ struct regmap *altr_sysmgr_regmap_lookup_by_phandle(struct device_node *np, sysmgr = dev_get_drvdata(dev); + put_device(dev); + return sysmgr->regmap; } EXPORT_SYMBOL_GPL(altr_sysmgr_regmap_lookup_by_phandle); -- 2.49.1

1 month, 3 weeks

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[PATCH] fbdev: Fix logic error in "offb" name match

by Finn Thain

A regression was reported to me recently whereby /dev/fb0 had disappeared from a PowerBook G3 Series "Wallstreet". The problem shows up when the "video=ofonly" parameter is passed to the kernel, which is what the bootloader does when "no video driver" is selected. The cause of the problem is the "offb" string comparison, which got mangled when it got refactored. Fix it. Cc: stable(a)vger.kernel.org Fixes: 93604a5ade3a ("fbdev: Handle video= parameter in video/cmdline.c") Reported-and-tested-by: Stan Johnson <userm57(a)yahoo.com> Signed-off-by: Finn Thain <fthain(a)linux-m68k.org> --- drivers/video/fbdev/core/fb_cmdline.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/video/fbdev/core/fb_cmdline.c b/drivers/video/fbdev/core/fb_cmdline.c index 4d1634c492ec..594b60424d1c 100644 --- a/drivers/video/fbdev/core/fb_cmdline.c +++ b/drivers/video/fbdev/core/fb_cmdline.c @@ -40,7 +40,7 @@ int fb_get_options(const char *name, char **option) bool enabled; if (name) - is_of = strncmp(name, "offb", 4); + is_of = !strncmp(name, "offb", 4); enabled = __video_get_options(name, &options, is_of); -- 2.49.1

1 month, 3 weeks

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[PATCH] Revert "drm/amd/display: Only restore backlight after amdgpu_dm_init or dm_resume"

by Matthew Schwartz

This fix regressed the original issue that commit d83c747a1225 ("drm/amd/display: Fix brightness level not retained over reboot") solved, so revert it until a different approach to solve the regression that it caused with AMD_PRIVATE_COLOR is found. Fixes: a490c8d77d50 ("drm/amd/display: Only restore backlight after amdgpu_dm_init or dm_resume") Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4620 Signed-off-by: Matthew Schwartz <matthew.schwartz(a)linux.dev> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 12 ++++-------- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 7 ------- 2 files changed, 4 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 8e1622bf7a42..21281e684b84 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2081,8 +2081,6 @@ static int amdgpu_dm_init(struct amdgpu_device *adev) dc_hardware_init(adev->dm.dc); - adev->dm.restore_backlight = true; - adev->dm.hpd_rx_offload_wq = hpd_rx_irq_create_workqueue(adev); if (!adev->dm.hpd_rx_offload_wq) { drm_err(adev_to_drm(adev), "failed to create hpd rx offload workqueue.\n"); @@ -3438,7 +3436,6 @@ static int dm_resume(struct amdgpu_ip_block *ip_block) dc_set_power_state(dm->dc, DC_ACPI_CM_POWER_STATE_D0); dc_resume(dm->dc); - adev->dm.restore_backlight = true; amdgpu_dm_irq_resume_early(adev); @@ -9965,6 +9962,7 @@ static void amdgpu_dm_commit_streams(struct drm_atomic_state *state, bool mode_set_reset_required = false; u32 i; struct dc_commit_streams_params params = {dc_state->streams, dc_state->stream_count}; + bool set_backlight_level = false; /* Disable writeback */ for_each_old_connector_in_state(state, connector, old_con_state, i) { @@ -10084,6 +10082,7 @@ static void amdgpu_dm_commit_streams(struct drm_atomic_state *state, acrtc->hw_mode = new_crtc_state->mode; crtc->hwmode = new_crtc_state->mode; mode_set_reset_required = true; + set_backlight_level = true; } else if (modereset_required(new_crtc_state)) { drm_dbg_atomic(dev, "Atomic commit: RESET. crtc id %d:[%p]\n", @@ -10140,16 +10139,13 @@ static void amdgpu_dm_commit_streams(struct drm_atomic_state *state, * to fix a flicker issue. * It will cause the dm->actual_brightness is not the current panel brightness * level. (the dm->brightness is the correct panel level) - * So we set the backlight level with dm->brightness value after initial - * set mode. Use restore_backlight flag to avoid setting backlight level - * for every subsequent mode set. + * So we set the backlight level with dm->brightness value after set mode */ - if (dm->restore_backlight) { + if (set_backlight_level) { for (i = 0; i < dm->num_of_edps; i++) { if (dm->backlight_dev[i]) amdgpu_dm_backlight_set_level(dm, i, dm->brightness[i]); } - dm->restore_backlight = false; } } diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h index 009f206226f0..db75e991ac7b 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h @@ -630,13 +630,6 @@ struct amdgpu_display_manager { */ u32 actual_brightness[AMDGPU_DM_MAX_NUM_EDP]; - /** - * @restore_backlight: - * - * Flag to indicate whether to restore backlight after modeset. - */ - bool restore_backlight; - /** * @aux_hpd_discon_quirk: * -- 2.51.0

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[PATCH v2 14/14] iommu/tegra: fix device leak on probe_device()

by Johan Hovold

Make sure to drop the reference taken to the iommu platform device when looking up its driver data during probe_device(). Note that commit 9826e393e4a8 ("iommu/tegra-smmu: Fix missing put_device() call in tegra_smmu_find") fixed the leak in an error path, but the reference is still leaking on success. Fixes: 891846516317 ("memory: Add NVIDIA Tegra memory controller support") Cc: stable(a)vger.kernel.org # 3.19: 9826e393e4a8 Cc: Thierry Reding <treding(a)nvidia.com> Cc: Miaoqian Lin <linmq006(a)gmail.com> Acked-by: Robin Murphy <robin.murphy(a)arm.com> Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/iommu/tegra-smmu.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index 36cdd5fbab07..f6f26a072820 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -830,10 +830,9 @@ static struct tegra_smmu *tegra_smmu_find(struct device_node *np) return NULL; mc = platform_get_drvdata(pdev); - if (!mc) { - put_device(&pdev->dev); + put_device(&pdev->dev); + if (!mc) return NULL; - } return mc->smmu; } -- 2.49.1

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[PATCH] Bluetooth: bfusb: Fix buffer over-read in rx processing loop

by pip-izony

From: Seungjin Bae <eeodqql09(a)gmail.com> The bfusb_rx_complete() function parses incoming URB data in while loop. The logic does not sufficiently validate the remaining buffer size(count) accross loop iterations, which can lead to a buffer over-read. For example, with 4-bytes remaining buffer, if the first iteration takes the `hdr & 0x4000` branch, 2-bytes are consumed. On the next iteration, only 2-bytes remain, but the else branch is trying to access the third byte(buf[2]). This causes an out-of-bounds read and a potential kernel panic. This patch fixes the vulnerability by adding checks to ensure enough data remains in the buffer before it is accessed. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Seungjin Bae <eeodqql09(a)gmail.com> --- drivers/bluetooth/bfusb.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/bluetooth/bfusb.c b/drivers/bluetooth/bfusb.c index 8df310983bf6..f17eae6dbd7d 100644 --- a/drivers/bluetooth/bfusb.c +++ b/drivers/bluetooth/bfusb.c @@ -360,6 +360,10 @@ static void bfusb_rx_complete(struct urb *urb) count -= 2; buf += 2; } else { + if (count < 3) { + bf_dev_err(data->hdev, "block header is too short"); + break; + } len = (buf[2] == 0) ? 256 : buf[2]; count -= 3; buf += 3; -- 2.43.0

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[PATCH for 5.15] platform/x86: int3472: Check for adev == NULL

by Nobuhiro Iwamatsu

From: Hans de Goede <hdegoede(a)redhat.com> commit cd2fd6eab480dfc247b737cf7a3d6b009c4d0f1c upstream. Not all devices have an ACPI companion fwnode, so adev might be NULL. This can e.g. (theoretically) happen when a user manually binds one of the int3472 drivers to another i2c/platform device through sysfs. Add a check for adev not being set and return -ENODEV in that case to avoid a possible NULL pointer deref in skl_int3472_get_acpi_buffer(). Signed-off-by: Hans de Goede <hdegoede(a)redhat.com> Link: https://lore.kernel.org/r/20241209220522.25288-1-hdegoede@redhat.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen(a)linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen(a)linux.intel.com> [iwamatsu: adjusted context] Signed-off-by: Nobuhiro Iwamatsu (CIP) <nobuhiro.iwamatsu.x90(a)mail.toshiba> --- drivers/platform/x86/intel/int3472/discrete.c | 3 +++ drivers/platform/x86/intel/int3472/tps68470.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/drivers/platform/x86/intel/int3472/discrete.c b/drivers/platform/x86/intel/int3472/discrete.c index 401fa8f223d622..31494f4247864e 100644 --- a/drivers/platform/x86/intel/int3472/discrete.c +++ b/drivers/platform/x86/intel/int3472/discrete.c @@ -345,6 +345,9 @@ static int skl_int3472_discrete_probe(struct platform_device *pdev) struct int3472_cldb cldb; int ret; + if (!adev) + return -ENODEV; + ret = skl_int3472_fill_cldb(adev, &cldb); if (ret) { dev_err(&pdev->dev, "Couldn't fill CLDB structure\n"); diff --git a/drivers/platform/x86/intel/int3472/tps68470.c b/drivers/platform/x86/intel/int3472/tps68470.c index fd3bef449137cf..b3faae7b23736a 100644 --- a/drivers/platform/x86/intel/int3472/tps68470.c +++ b/drivers/platform/x86/intel/int3472/tps68470.c @@ -102,6 +102,9 @@ static int skl_int3472_tps68470_probe(struct i2c_client *client) int device_type; int ret; + if (!adev) + return -ENODEV; + regmap = devm_regmap_init_i2c(client, &tps68470_regmap_config); if (IS_ERR(regmap)) { dev_err(&client->dev, "Failed to create regmap: %ld\n", PTR_ERR(regmap)); -- 2.51.0

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[PATCH v1] ALSA: hda/tas2781: Enable init_profile_id for device initialization

by Shenghao Ding

Optimize the time consumption of profile switching, init_profile saves the common settings of different profiles, such as the dsp coefficients, etc, which can greatly reduce the profile switching time comsumption and remove the repetitive settings. Fixes: e83dcd139e77 ("ASoC: tas2781: Add keyword "init" in profile section") Signed-off-by: Shenghao Ding <shenghao-ding(a)ti.com> --- sound/hda/codecs/side-codecs/tas2781_hda_i2c.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/sound/hda/codecs/side-codecs/tas2781_hda_i2c.c b/sound/hda/codecs/side-codecs/tas2781_hda_i2c.c index 4dea442d8c30..a126f04c3ed7 100644 --- a/sound/hda/codecs/side-codecs/tas2781_hda_i2c.c +++ b/sound/hda/codecs/side-codecs/tas2781_hda_i2c.c @@ -474,6 +474,12 @@ static void tasdevice_dspfw_init(void *context) if (tas_priv->fmw->nr_configurations > 0) tas_priv->cur_conf = 0; + /* Init common setting for different audio profiles */ + if (tas_priv->rcabin.init_profile_id >= 0) + tasdevice_select_cfg_blk(tas_priv, + tas_priv->rcabin.init_profile_id, + TASDEVICE_BIN_BLK_PRE_POWER_UP); + /* If calibrated data occurs error, dsp will still works with default * calibrated data inside algo. */ @@ -770,6 +776,12 @@ static int tas2781_system_resume(struct device *dev) tasdevice_reset(tas_hda->priv); tasdevice_prmg_load(tas_hda->priv, tas_hda->priv->cur_prog); + /* Init common setting for different audio profiles */ + if (tas_hda->priv->rcabin.init_profile_id >= 0) + tasdevice_select_cfg_blk(tas_hda->priv, + tas_hda->priv->rcabin.init_profile_id, + TASDEVICE_BIN_BLK_PRE_POWER_UP); + if (tas_hda->priv->playback_started) tasdevice_tuning_switch(tas_hda->priv, 0); -- 2.43.0

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[PATCH linux-next v2 0/2] ksm: fix exec/fork inheritance

by xu.xin16＠zte.com.cn

From: xu xin <xu.xin16(a)zte.com.cn> This series aim to fix exec/fork inheritance. See the detailed description of issue at the following patch. PATCH 1: the patch to fix the issue. PATCH 2: a reproduce program or testcase. xu xin (2): mm/ksm: fix exec/fork inheritance support for prctl selftests: update ksm inheritation tests for prctl fork/exec include/linux/ksm.h | 4 +- mm/ksm.c | 20 ++++++- .../selftests/mm/ksm_functional_tests.c | 57 +++++++++++++++++++ 3 files changed, 76 insertions(+), 5 deletions(-) -- 2.25.1

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[PATCH] usb: gadget: udc: fix race condition in usb_del_gadget

by Jimmy Hu

A race condition during gadget teardown can lead to a use-after-free in usb_gadget_state_work(), as reported by KASAN: BUG: KASAN: invalid-access in sysfs_notify+0_x_2c/0_x_d0 Workqueue: events usb_gadget_state_work The fundamental race occurs because a concurrent event (e.g., an interrupt) can call usb_gadget_set_state() and schedule gadget->work at any time during the cleanup process in usb_del_gadget(). Commit 399a45e5237c ("usb: gadget: core: flush gadget workqueue after device removal") attempted to fix this by moving flush_work() to after device_del(). However, this does not fully solve the race, as a new work item can still be scheduled *after* flush_work() completes but before the gadget's memory is freed, leading to the same use-after-free. This patch fixes the race condition robustly by introducing a 'teardown' flag and a 'state_lock' spinlock to the usb_gadget struct. The flag is set during cleanup in usb_del_gadget() *before* calling flush_work() to prevent any new work from being scheduled once cleanup has commenced. The scheduling site, usb_gadget_set_state(), now checks this flag under the lock before queueing the work, thus safely closing the race window. Fixes: 5702f75375aa9 ("usb: gadget: udc-core: move sysfs_notify() to a workqueue") Signed-off-by: Jimmy Hu <hhhuuu(a)google.com> Cc: stable(a)vger.kernel.org --- drivers/usb/gadget/udc/core.c | 18 +++++++++++++++++- include/linux/usb/gadget.h | 6 ++++++ 2 files changed, 23 insertions(+), 1 deletion(-) diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index d709e24c1fd4..c4268b76d747 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -1123,8 +1123,13 @@ static void usb_gadget_state_work(struct work_struct *work) void usb_gadget_set_state(struct usb_gadget *gadget, enum usb_device_state state) { + unsigned long flags; + + spin_lock_irqsave(&gadget->state_lock, flags); gadget->state = state; - schedule_work(&gadget->work); + if (!gadget->teardown) + schedule_work(&gadget->work); + spin_unlock_irqrestore(&gadget->state_lock, flags); } EXPORT_SYMBOL_GPL(usb_gadget_set_state); @@ -1357,6 +1362,9 @@ static void usb_udc_nop_release(struct device *dev) void usb_initialize_gadget(struct device *parent, struct usb_gadget *gadget, void (*release)(struct device *dev)) { + /* For race-free teardown */ + spin_lock_init(&gadget->state_lock); + gadget->teardown = false; INIT_WORK(&gadget->work, usb_gadget_state_work); gadget->dev.parent = parent; @@ -1531,6 +1539,7 @@ EXPORT_SYMBOL_GPL(usb_add_gadget_udc); void usb_del_gadget(struct usb_gadget *gadget) { struct usb_udc *udc = gadget->udc; + unsigned long flags; if (!udc) return; @@ -1544,6 +1553,13 @@ void usb_del_gadget(struct usb_gadget *gadget) kobject_uevent(&udc->dev.kobj, KOBJ_REMOVE); sysfs_remove_link(&udc->dev.kobj, "gadget"); device_del(&gadget->dev); + /* + * Set the teardown flag before flushing the work to prevent new work + * from being scheduled while we are cleaning up. + */ + spin_lock_irqsave(&gadget->state_lock, flags); + gadget->teardown = true; + spin_unlock_irqrestore(&gadget->state_lock, flags); flush_work(&gadget->work); ida_free(&gadget_id_numbers, gadget->id_number); cancel_work_sync(&udc->vbus_work); diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index 0f28c5512fcb..8302aeaea82e 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -351,6 +351,9 @@ struct usb_gadget_ops { * can handle. The UDC must support this and all slower speeds and lower * number of lanes. * @state: the state we are now (attached, suspended, configured, etc) + * @state_lock: Spinlock protecting the `state` and `teardown` members. + * @teardown: True if the device is undergoing teardown, used to prevent + * new work from being scheduled during cleanup. * @name: Identifies the controller hardware type. Used in diagnostics * and sometimes configuration. * @dev: Driver model state for this abstract device. @@ -426,6 +429,9 @@ struct usb_gadget { enum usb_ssp_rate max_ssp_rate; enum usb_device_state state; + /* For race-free teardown and state management */ + spinlock_t state_lock; + bool teardown; const char *name; struct device dev; unsigned isoch_delay; -- 2.51.0.618.g983fd99d29-goog

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+ mm-huge_memory-add-pmd-folio-to-ds_queue-in-do_huge_zero_wp_pmd.patch added to mm-new branch

by Andrew Morton

The patch titled Subject: mm/huge_memory: add pmd folio to ds_queue in do_huge_zero_wp_pmd() has been added to the -mm mm-new branch. Its filename is mm-huge_memory-add-pmd-folio-to-ds_queue-in-do_huge_zero_wp_pmd.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Wei Yang <richard.weiyang(a)gmail.com> Subject: mm/huge_memory: add pmd folio to ds_queue in do_huge_zero_wp_pmd() Date: Wed, 8 Oct 2025 09:54:52 +0000 We add pmd folio into ds_queue on the first page fault in __do_huge_pmd_anonymous_page(), so that we can split it in case of memory pressure. This should be the same for a pmd folio during wp page fault. Commit 1ced09e0331f ("mm: allocate THP on hugezeropage wp-fault") miss to add it to ds_queue, which means system may not reclaim enough memory in case of memory pressure even the pmd folio is under used. Move deferred_split_folio() into map_anon_folio_pmd() to make the pmd folio installation consistent. Link: https://lkml.kernel.org/r/20251008095453.18772-2-richard.weiyang@gmail.com Fixes: 1ced09e0331f ("mm: allocate THP on hugezeropage wp-fault") Signed-off-by: Wei Yang <richard.weiyang(a)gmail.com> Acked-by: David Hildenbrand <david(a)redhat.com> Reviewed-by: Lance Yang <lance.yang(a)linux.dev> Reviewed-by: Dev Jain <dev.jain(a)arm.com> Acked-by: Usama Arif <usamaarif642(a)gmail.com> Reviewed-by: Zi Yan <ziy(a)nvidia.com> Cc: Matthew Wilcox <willy(a)infradead.org> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/huge_memory.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/huge_memory.c~mm-huge_memory-add-pmd-folio-to-ds_queue-in-do_huge_zero_wp_pmd +++ a/mm/huge_memory.c @@ -1317,6 +1317,7 @@ static void map_anon_folio_pmd(struct fo count_vm_event(THP_FAULT_ALLOC); count_mthp_stat(HPAGE_PMD_ORDER, MTHP_STAT_ANON_FAULT_ALLOC); count_memcg_event_mm(vma->vm_mm, THP_FAULT_ALLOC); + deferred_split_folio(folio, false); } static vm_fault_t __do_huge_pmd_anonymous_page(struct vm_fault *vmf) @@ -1357,7 +1358,6 @@ static vm_fault_t __do_huge_pmd_anonymou pgtable_trans_huge_deposit(vma->vm_mm, vmf->pmd, pgtable); map_anon_folio_pmd(folio, vmf->pmd, vma, haddr); mm_inc_nr_ptes(vma->vm_mm); - deferred_split_folio(folio, false); spin_unlock(vmf->ptl); } _ Patches currently in -mm which might be from richard.weiyang(a)gmail.com are mm-compaction-check-the-range-to-pageblock_pfn_to_page-is-within-the-zone-first.patch mm-compaction-fix-the-range-to-pageblock_pfn_to_page.patch mm-huge_memory-add-pmd-folio-to-ds_queue-in-do_huge_zero_wp_pmd.patch mm-khugepaged-unify-pmd-folio-installation-with-map_anon_folio_pmd.patch

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[PATCH 5.10.y 0/2] drm/amd/display: Fix potential null dereference

by Eslam Khafagy

This series backports commit [52f1783ff414 ("drm/amd/display: Fix potential null dereference")] to stable branch 5.10.y. However to apply this i had to backport commit [3beac533b8da ("drm/amd/display: Remove redundant safeguards for dmub-srv destroy()")] first. Igor Artemiev (1): drm/amd/display: Fix potential null dereference Roman Li (1): drm/amd/display: Remove redundant safeguards for dmub-srv destroy() drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) -- 2.43.0

1 month, 3 weeks

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[PATCH] wifi: mt76: mt7921: fix a potential clc buffer length underflow

by Mingyen Hsieh

From: Leon Yen <leon.yen(a)mediatek.com> The buf_len is used to limit the iterations for retrieving the country power setting and may underflow under certain conditions due to changes in the power table in CLC. This underflow leads to an almost infinite loop or an invalid power setting resulting in driver initialization failure. Cc: stable(a)vger.kernel.org Fixes: fa6ad88e023d ("wifi: mt76: mt7921: fix country count limitation for CLC") Signed-off-by: Leon Yen <leon.yen(a)mediatek.com> Signed-off-by: Ming Yen Hsieh <mingyen.hsieh(a)mediatek.com> --- drivers/net/wireless/mediatek/mt76/mt7921/mcu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c index 86bd33b916a9..80ccd56409b3 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c @@ -1353,6 +1353,9 @@ int __mt7921_mcu_set_clc(struct mt792x_dev *dev, u8 *alpha2, u16 len = le16_to_cpu(rule->len); u16 offset = len + sizeof(*rule); + if (buf_len < offset) + break; + pos += offset; buf_len -= offset; if (rule->alpha2[0] != alpha2[0] || -- 2.34.1

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regression in hostfs (ARCH=um)

by Geoffrey Thorpe

Any trivial usage of hostfs seems to be broken since commit cd140ce9 ("hostfs: convert hostfs to use the new mount API") - that's what it bisected down to. Steps to reproduce; The following assumes that the ARCH=um kernel has already been compiled (and the 'vmlinux' executable is in the local directory, as is the case when building from the top directory of a source tree). I built mine from a fresh clone using 'defconfig'. The uml_run.sh script creates a bootable root FS image (from debian, via docker) and then boots it with a hostfs mount to demonstrate the regression. This should be observable with any other bootable image though, simply pass "hostfs=<hostpath>" to the ./vmlinux kernel and then try to mount it from within the booted VM ("mount -t hostfs none <guestpath>"). The following 3 text files are used, and as they're small enough for copy-n-paste I figured (hoped) it was best to inline them rather than post attachments. uml_run.sh: #!/bin/bash set -ex cat Dockerfile | docker build -t foobar:foobar - docker export -o foobar.tar \ `docker run -d foobar:foobar /bin/true` dd if=/dev/zero of=rootfs.img \ bs=$(expr 2048 \* 1024 \* 1024 / 512) count=512 mkfs.ext4 rootfs.img sudo ./uml_root.sh cp rootfs.img temp.img dd if=/dev/zero of=swapfile bs=1M count=1024 chmod 600 swapfile mkswap swapfile ./vmlinux mem=4G ubd0=temp.img rw ubd1=swapfile \ hostfs=$(pwd) uml_root.sh: #!/bin/bash set -ex losetup -D LOOPDEVICE=$(losetup -f) losetup ${LOOPDEVICE} rootfs.img mkdir -p tmpmnt mount -t auto ${LOOPDEVICE} tmpmnt/ (cd tmpmnt && tar xf ../foobar.tar) umount tmpmnt losetup -D Dockerfile: FROM debian:trixie RUN echo 'debconf debconf/frontend select Noninteractive' | \ debconf-set-selections RUN apt-get update RUN apt-get install -y apt-utils RUN apt-get -y full-upgrade RUN echo "US/Eastern" > /etc/timezone RUN chmod 644 /etc/timezone RUN cd /etc && rm -f localtime && \ ln -s /usr/share/zoneinfo/US/Eastern localtime RUN apt-get install -y systemd-sysv kmod RUN echo "root:root" | chpasswd RUN echo "/dev/ubdb swap swap defaults 0 0" >> /etc/fstab RUN mkdir /hosthack RUN echo "none /hosthack hostfs defaults 0 0" >> /etc/fstab RUN systemctl set-default multi-user.target Execute ./uml_run.sh to build the rootfs image and boot the VM. This requires a system with docker, and will also require a sudo password when creating the rootfs. The boot output indicates whether the hostfs mount succeeds or not - the boot should degrade to emergency mode if the mount fails, otherwise a login prompt indicates success. (Login is root:root, e.g. if you prefer to go in and shutdown the VM gracefully.) Please let me know if I can/should provide anything else. Cheers, Geoff

1 month, 3 weeks

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[PATCH v1] ASoC: soc-pcm: Fix mute and unmute control for non-dynamic DAI links

by Mohammad Rafi Shaik

In setups where the same codec DAI is reused across multiple DAI links, mute controls via `snd_soc_dai_digital_mute()` is skipped for non-dynamic links. The trigger operations are not invoked when `dai_link->dynamic == 0`, and mute controls is currently conditioned only on `snd_soc_dai_mute_is_ctrled_at_trigger()`. This patch ensures that mute and unmute is applied explicitly for non-dynamic links. Fixes: f0220575e65a ("ASoC: soc-dai: add flag to mute and unmute stream during trigger") Cc: stable(a)vger.kernel.org Signed-off-by: Mohammad Rafi Shaik <mohammad.rafi.shaik(a)oss.qualcomm.com> --- sound/soc/soc-pcm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 2c21fd528afd..4ed829b49bc2 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -949,7 +949,7 @@ static int __soc_pcm_prepare(struct snd_soc_pcm_runtime *rtd, SND_SOC_DAPM_STREAM_START); for_each_rtd_dais(rtd, i, dai) { - if (!snd_soc_dai_mute_is_ctrled_at_trigger(dai)) + if (!snd_soc_dai_mute_is_ctrled_at_trigger(dai) || !rtd->dai_link->dynamic) snd_soc_dai_digital_mute(dai, 0, substream->stream); } @@ -1007,7 +1007,7 @@ static int soc_pcm_hw_clean(struct snd_soc_pcm_runtime *rtd, soc_pcm_set_dai_params(dai, NULL); if (snd_soc_dai_stream_active(dai, substream->stream) == 1) { - if (!snd_soc_dai_mute_is_ctrled_at_trigger(dai)) + if (!snd_soc_dai_mute_is_ctrled_at_trigger(dai) || !rtd->dai_link->dynamic) snd_soc_dai_digital_mute(dai, 1, substream->stream); } } -- 2.34.1

1 month, 3 weeks

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[PATCH v3 00/19 5.15.y] Backport minmax.h updates from v6.17-rc7

by Eliav Farber

This series backports 19 patches to update minmax.h in the 5.15.y branch, aligning it with v6.17-rc7. The ultimate goal is to synchronize all longterm branches so that they include the full set of minmax.h changes. 6.12.y was already backported and changes are part of v6.12.49. 6.6.y was already backported and changes are part of v6.6.109. 6.1.y was already backported and changes are currently in the 6.1-stable tree. The key motivation is to bring in commit d03eba99f5bf ("minmax: allow min()/max()/clamp() if the arguments have the same signedness"), which is missing in kernel 5.10.y. In mainline, this change enables min()/max()/clamp() to accept mixed argument types, provided both have the same signedness. Without it, backported patches that use these forms may trigger compiler warnings, which escalate to build failures when -Werror is enabled. Changes in v3: - Fix fs/erofs/zdata.h in patch 06/19 to use MIN_T instead of min_t to fix build on the following patch (07/19): In file included from ./include/linux/kernel.h:16, from ./include/linux/list.h:9, from ./include/linux/wait.h:7, from ./include/linux/wait_bit.h:8, from ./include/linux/fs.h:6, from fs/erofs/internal.h:10, from fs/erofs/zdata.h:9, from fs/erofs/zdata.c:6: fs/erofs/zdata.c: In function ‘z_erofs_decompress_pcluster’: fs/erofs/zdata.h:185:61: error: ISO C90 forbids variable length array ‘pages_onstack’ [-Werror=vla] 185 | min_t(unsigned int, THREAD_SIZE / 8 / sizeof(struct page *), 96U) | ^~~~ ./include/linux/minmax.h:49:23: note: in definition of macro ‘__cmp_once_unique’ 49 | ({ type ux = (x); type uy = (y); __cmp(op, ux, uy); }) | ^ ./include/linux/minmax.h:164:27: note: in expansion of macro ‘__cmp_once’ 164 | #define min_t(type, x, y) __cmp_once(min, type, x, y) | ^~~~~~~~~~ fs/erofs/zdata.h:185:9: note: in expansion of macro ‘min_t’ 185 | min_t(unsigned int, THREAD_SIZE / 8 / sizeof(struct page *), 96U) | ^~~~~ fs/erofs/zdata.c:847:36: note: in expansion of macro ‘Z_EROFS_VMAP_ONSTACK_PAGES’ 847 | struct page *pages_onstack[Z_EROFS_VMAP_ONSTACK_PAGES]; | ^~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors - Increase test coverage using `make allyesconfig` and `make allmodconfig` for arm64, arm, x86_64 and i386 architectures. Changes in v2: - Fix the order of patches 6 - 10 according to order in mainline branch. - Use same style of [ Upstream commit <HASH> ] in all patches. Andy Shevchenko (1): minmax: deduplicate __unconst_integer_typeof() David Laight (8): minmax: fix indentation of __cmp_once() and __clamp_once() minmax.h: add whitespace around operators and after commas minmax.h: update some comments minmax.h: reduce the #define expansion of min(), max() and clamp() minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp() minmax.h: move all the clamp() definitions after the min/max() ones minmax.h: simplify the variants of clamp() minmax.h: remove some #defines that are only expanded once Herve Codina (1): minmax: Introduce {min,max}_array() Linus Torvalds (8): minmax: avoid overly complicated constant expressions in VM code minmax: add a few more MIN_T/MAX_T users minmax: simplify and clarify min_t()/max_t() implementation minmax: make generic MIN() and MAX() macros available everywhere minmax: don't use max() in situations that want a C constant expression minmax: simplify min()/max()/clamp() implementation minmax: improve macro expansion and type checking minmax: fix up min3() and max3() too Matthew Wilcox (Oracle) (1): minmax: add in_range() macro arch/arm/mm/pageattr.c | 6 +- arch/um/drivers/mconsole_user.c | 2 + arch/x86/mm/pgtable.c | 2 +- drivers/edac/sb_edac.c | 4 +- drivers/edac/skx_common.h | 1 - drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 + .../drm/amd/display/modules/hdcp/hdcp_ddc.c | 2 + .../drm/amd/pm/powerplay/hwmgr/ppevvmath.h | 14 +- .../amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 2 + .../drm/arm/display/include/malidp_utils.h | 2 +- .../display/komeda/komeda_pipeline_state.c | 24 +- drivers/gpu/drm/drm_color_mgmt.c | 2 +- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 6 - drivers/gpu/drm/radeon/evergreen_cs.c | 2 + drivers/hwmon/adt7475.c | 24 +- drivers/input/touchscreen/cyttsp4_core.c | 2 +- drivers/irqchip/irq-sun6i-r.c | 2 +- drivers/md/dm-integrity.c | 4 +- drivers/media/dvb-frontends/stv0367_priv.h | 3 + .../net/ethernet/chelsio/cxgb3/cxgb3_main.c | 18 +- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +- drivers/net/fjes/fjes_main.c | 4 +- drivers/nfc/pn544/i2c.c | 2 - drivers/platform/x86/sony-laptop.c | 1 - drivers/scsi/isci/init.c | 6 +- .../pci/hive_isp_css_include/math_support.h | 5 - drivers/virt/acrn/ioreq.c | 4 +- fs/btrfs/misc.h | 2 - fs/btrfs/tree-checker.c | 2 +- fs/erofs/zdata.h | 2 +- fs/ext2/balloc.c | 2 - fs/ext4/ext4.h | 2 - fs/ufs/util.h | 6 - include/linux/compiler.h | 9 + include/linux/minmax.h | 264 +++++++++++++----- kernel/trace/preemptirq_delay_test.c | 2 - lib/btree.c | 1 - lib/decompress_unlzma.c | 2 + lib/logic_pio.c | 3 - lib/vsprintf.c | 2 +- lib/zstd/zstd_internal.h | 2 - mm/zsmalloc.c | 1 - net/ipv4/proc.c | 2 +- net/ipv6/proc.c | 2 +- net/netfilter/nf_nat_core.c | 6 +- net/tipc/core.h | 2 +- net/tipc/link.c | 10 +- tools/testing/selftests/vm/mremap_test.c | 2 + 48 files changed, 290 insertions(+), 184 deletions(-) -- 2.47.3

1 month, 3 weeks

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[PATCH v6 1/6] nfsd: fix refcount leak in nfsd_set_fh_dentry()

by Chuck Lever

From: NeilBrown <neil(a)brown.name> nfsd exports a "pseudo root filesystem" which is used by NFSv4 to find the various exported filesystems using LOOKUP requests from a known root filehandle. NFSv3 uses the MOUNT protocol to find those exported filesystems and so is not given access to the pseudo root filesystem. If a v3 (or v2) client uses a filehandle from that filesystem, nfsd_set_fh_dentry() will report an error, but still stores the export in "struct svc_fh" even though it also drops the reference (exp_put()). This means that when fh_put() is called an extra reference will be dropped which can lead to use-after-free and possible denial of service. Normal NFS usage will not provide a pseudo-root filehandle to a v3 client. This bug can only be triggered by the client synthesising an incorrect filehandle. To fix this we move the assignments to the svc_fh later, after all possible error cases have been detected. Reported-and-tested-by: tianshuo han <hantianshuo233(a)gmail.com> Fixes: ef7f6c4904d0 ("nfsd: move V4ROOT version check to nfsd_set_fh_dentry()") Signed-off-by: NeilBrown <neil(a)brown.name> Reviewed-by: Jeff Layton <jlayton(a)kernel.org> Cc: stable(a)vger.kernel.org Signed-off-by: Chuck Lever <chuck.lever(a)oracle.com> --- fs/nfsd/nfsfh.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c index 3eb724ec9566..ed85dd43da18 100644 --- a/fs/nfsd/nfsfh.c +++ b/fs/nfsd/nfsfh.c @@ -269,9 +269,6 @@ static __be32 nfsd_set_fh_dentry(struct svc_rqst *rqstp, struct net *net, dentry); } - fhp->fh_dentry = dentry; - fhp->fh_export = exp; - switch (fhp->fh_maxsize) { case NFS4_FHSIZE: if (dentry->d_sb->s_export_op->flags & EXPORT_OP_NOATOMIC_ATTR) @@ -293,6 +290,9 @@ static __be32 nfsd_set_fh_dentry(struct svc_rqst *rqstp, struct net *net, goto out; } + fhp->fh_dentry = dentry; + fhp->fh_export = exp; + return 0; out: exp_put(exp); -- 2.51.0

1 month, 3 weeks

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kvm: arm64: stable commit "Fix kernel BUG() due to bad backport of FPSIMD/SVE/SME fix" deadlocks host kernel

by Sergey Senozhatsky

Commits 8f4dc4e54eed4 (6.1.y) and 23249dade24e6 (5.15.y) (maybe other stable kernels as well) deadlock the host kernel (presumably a recursive spinlock): queued_spin_lock_slowpath+0x274/0x358 raw_spin_rq_lock_nested+0x2c/0x48 _raw_spin_rq_lock_irqsave+0x30/0x4c run_rebalance_domains+0x808/0x2e18 __do_softirq+0x104/0x550 irq_exit+0x88/0xe0 handle_domain_irq+0x7c/0xb0 gic_handle_irq+0x1cc/0x420 call_on_irq_stack+0x20/0x48 do_interrupt_handler+0x3c/0x50 el1_interrupt+0x30/0x58 el1h_64_irq_handler+0x18/0x24 el1h_64_irq+0x7c/0x80 kvm_arch_vcpu_ioctl_run+0x24c/0x49c kvm_vcpu_ioctl+0xc4/0x614 We found out a similar report at [1], but it doesn't seem like a formal patch was ever posted. Will, can you please send a formal patch so that stable kernels can run VMs again? [1] https://lists.linaro.org/archives/list/linux-stable-mirror@lists.linaro.org…

1 month, 3 weeks

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[PATCH v2 01/20] arm64: Revert support for generic kernel mode FPU

by Ard Biesheuvel

From: Ard Biesheuvel <ardb(a)kernel.org> On arm64, generic kernel mode FPU support, as used by the AMD GPU driver, involves dropping the -mgeneral-regs-only compiler flag, as that flag makes the use of double and float C types impossible. However, dropping that flag allows the compiler to use FPU and SIMD registers in other ways too, and for this reason, arm64 only permits doing so in strictly controlled contexts, i.e., isolated compilation units that get called from inside a kernel_neon_begin() and kernel_neon_end() pair. The users of the generic kernel mode FPU API lack such strict checks, and this may result in userland FP/SIMD state to get corrupted, given that touching FP/SIMD registers outside of a kernel_neon_begin/end pair does not fault, but silently operates on the userland state without preserving it. So disable this feature for the time being. This reverts commits 71883ae35278 arm64: implement ARCH_HAS_KERNEL_FPU_SUPPORT 7177089525d9 arm64: crypto: use CC_FLAGS_FPU for NEON CFLAGS 4be073931cd8 lib/raid6: use CC_FLAGS_FPU for NEON CFLAGS Cc: <stable(a)vger.kernel.org> # v6.12+ Signed-off-by: Ard Biesheuvel <ardb(a)kernel.org> --- arch/arm64/Kconfig | 1 - arch/arm64/Makefile | 9 +----- arch/arm64/include/asm/fpu.h | 15 --------- arch/arm64/lib/Makefile | 6 ++-- lib/raid6/Makefile | 33 ++++++++++++++------ 5 files changed, 28 insertions(+), 36 deletions(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index b81ab5fbde57..abf70929f675 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -32,7 +32,6 @@ config ARM64 select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_GIGANTIC_PAGE select ARCH_HAS_KCOV - select ARCH_HAS_KERNEL_FPU_SUPPORT if KERNEL_MODE_NEON select ARCH_HAS_KEEPINITRD select ARCH_HAS_MEMBARRIER_SYNC_CORE select ARCH_HAS_MEM_ENCRYPT diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 73a10f65ce8b..82209cc52a5a 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -33,14 +33,7 @@ ifeq ($(CONFIG_BROKEN_GAS_INST),y) $(warning Detected assembler with broken .inst; disassembly will be unreliable) endif -# The GCC option -ffreestanding is required in order to compile code containing -# ARM/NEON intrinsics in a non C99-compliant environment (such as the kernel) -CC_FLAGS_FPU := -ffreestanding -# Enable <arm_neon.h> -CC_FLAGS_FPU += -isystem $(shell $(CC) -print-file-name=include) -CC_FLAGS_NO_FPU := -mgeneral-regs-only - -KBUILD_CFLAGS += $(CC_FLAGS_NO_FPU) \ +KBUILD_CFLAGS += -mgeneral-regs-only \ $(compat_vdso) $(cc_has_k_constraint) KBUILD_CFLAGS += $(call cc-disable-warning, psabi) KBUILD_AFLAGS += $(compat_vdso) diff --git a/arch/arm64/include/asm/fpu.h b/arch/arm64/include/asm/fpu.h deleted file mode 100644 index 2ae50bdce59b..000000000000 --- a/arch/arm64/include/asm/fpu.h +++ /dev/null @@ -1,15 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Copyright (C) 2023 SiFive - */ - -#ifndef __ASM_FPU_H -#define __ASM_FPU_H - -#include <asm/neon.h> - -#define kernel_fpu_available() cpu_has_neon() -#define kernel_fpu_begin() kernel_neon_begin() -#define kernel_fpu_end() kernel_neon_end() - -#endif /* ! __ASM_FPU_H */ diff --git a/arch/arm64/lib/Makefile b/arch/arm64/lib/Makefile index 633e5223d944..291b616ab511 100644 --- a/arch/arm64/lib/Makefile +++ b/arch/arm64/lib/Makefile @@ -7,8 +7,10 @@ lib-y := clear_user.o delay.o copy_from_user.o \ ifeq ($(CONFIG_KERNEL_MODE_NEON), y) obj-$(CONFIG_XOR_BLOCKS) += xor-neon.o -CFLAGS_xor-neon.o += $(CC_FLAGS_FPU) -CFLAGS_REMOVE_xor-neon.o += $(CC_FLAGS_NO_FPU) +CFLAGS_REMOVE_xor-neon.o += -mgeneral-regs-only +CFLAGS_xor-neon.o += -ffreestanding +# Enable <arm_neon.h> +CFLAGS_xor-neon.o += -isystem $(shell $(CC) -print-file-name=include) endif lib-$(CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE) += uaccess_flushcache.o diff --git a/lib/raid6/Makefile b/lib/raid6/Makefile index 5be0a4e60ab1..903e287c50c8 100644 --- a/lib/raid6/Makefile +++ b/lib/raid6/Makefile @@ -34,6 +34,25 @@ CFLAGS_REMOVE_vpermxor8.o += -msoft-float endif endif +# The GCC option -ffreestanding is required in order to compile code containing +# ARM/NEON intrinsics in a non C99-compliant environment (such as the kernel) +ifeq ($(CONFIG_KERNEL_MODE_NEON),y) +NEON_FLAGS := -ffreestanding +# Enable <arm_neon.h> +NEON_FLAGS += -isystem $(shell $(CC) -print-file-name=include) +ifeq ($(ARCH),arm) +NEON_FLAGS += -march=armv7-a -mfloat-abi=softfp -mfpu=neon +endif +CFLAGS_recov_neon_inner.o += $(NEON_FLAGS) +ifeq ($(ARCH),arm64) +CFLAGS_REMOVE_recov_neon_inner.o += -mgeneral-regs-only +CFLAGS_REMOVE_neon1.o += -mgeneral-regs-only +CFLAGS_REMOVE_neon2.o += -mgeneral-regs-only +CFLAGS_REMOVE_neon4.o += -mgeneral-regs-only +CFLAGS_REMOVE_neon8.o += -mgeneral-regs-only +endif +endif + quiet_cmd_unroll = UNROLL $@ cmd_unroll = $(AWK) -v N=$* -f $(src)/unroll.awk < $< > $@ @@ -57,16 +76,10 @@ targets += vpermxor1.c vpermxor2.c vpermxor4.c vpermxor8.c $(obj)/vpermxor%.c: $(src)/vpermxor.uc $(src)/unroll.awk FORCE $(call if_changed,unroll) -CFLAGS_neon1.o += $(CC_FLAGS_FPU) -CFLAGS_neon2.o += $(CC_FLAGS_FPU) -CFLAGS_neon4.o += $(CC_FLAGS_FPU) -CFLAGS_neon8.o += $(CC_FLAGS_FPU) -CFLAGS_recov_neon_inner.o += $(CC_FLAGS_FPU) -CFLAGS_REMOVE_neon1.o += $(CC_FLAGS_NO_FPU) -CFLAGS_REMOVE_neon2.o += $(CC_FLAGS_NO_FPU) -CFLAGS_REMOVE_neon4.o += $(CC_FLAGS_NO_FPU) -CFLAGS_REMOVE_neon8.o += $(CC_FLAGS_NO_FPU) -CFLAGS_REMOVE_recov_neon_inner.o += $(CC_FLAGS_NO_FPU) +CFLAGS_neon1.o += $(NEON_FLAGS) +CFLAGS_neon2.o += $(NEON_FLAGS) +CFLAGS_neon4.o += $(NEON_FLAGS) +CFLAGS_neon8.o += $(NEON_FLAGS) targets += neon1.c neon2.c neon4.c neon8.c $(obj)/neon%.c: $(src)/neon.uc $(src)/unroll.awk FORCE $(call if_changed,unroll) -- 2.51.0.618.g983fd99d29-goog

1 month, 3 weeks

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BUS105 Exam Format Explained: What You Need to Know Before You Register

by Jerry

Understanding the BUS105 exam format before you register is crucial for building an effective study strategy and avoiding surprises on test day. The BUS105 exam evaluates your knowledge of business fundamentals, including management principles, marketing concepts, financial literacy, and organizational behavior. The test typically consists of multiple-choice questions designed to measure both theoretical understanding and practical application of business concepts. To prepare efficiently, familiarize yourself with the structure and types of questions you’ll face. Practicing with BUS105 Practice Questions from study4exam can give you a clear idea of what to expect. These resources replicate real exam conditions, allowing you to improve time management and accuracy while identifying areas that need more attention. More info visit this website: https://www.study4exam.com/saylor/free-bus105-questions Understanding the marking scheme, question difficulty, and key focus areas in advance ensures you go into the exam well-prepared and confident. With the right preparation strategy and quality practice materials, you can successfully master the BUS105 exam and take a significant step toward your academic or professional goals.

1 month, 3 weeks

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[Patch v3 1/2] mm/huge_memory: add pmd folio to ds_queue in do_huge_zero_wp_pmd()

by Wei Yang

We add pmd folio into ds_queue on the first page fault in __do_huge_pmd_anonymous_page(), so that we can split it in case of memory pressure. This should be the same for a pmd folio during wp page fault. Commit 1ced09e0331f ("mm: allocate THP on hugezeropage wp-fault") miss to add it to ds_queue, which means system may not reclaim enough memory in case of memory pressure even the pmd folio is under used. Move deferred_split_folio() into map_anon_folio_pmd() to make the pmd folio installation consistent. Fixes: 1ced09e0331f ("mm: allocate THP on hugezeropage wp-fault") Signed-off-by: Wei Yang <richard.weiyang(a)gmail.com> Cc: David Hildenbrand <david(a)redhat.com> Cc: Lance Yang <lance.yang(a)linux.dev> Cc: Dev Jain <dev.jain(a)arm.com> Acked-by: David Hildenbrand <david(a)redhat.com> Reviewed-by: Lance Yang <lance.yang(a)linux.dev> Reviewed-by: Dev Jain <dev.jain(a)arm.com> Acked-by: Usama Arif <usamaarif642(a)gmail.com> Reviewed-by: Zi Yan <ziy(a)nvidia.com> Cc: <stable(a)vger.kernel.org> --- v3: * rebase on latest mm-new * gather rb and acked-by v2: * add fix, cc stable and put description about the flow of current code * move deferred_split_folio() into map_anon_folio_pmd() --- mm/huge_memory.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 002922bb6e42..e86699306c5e 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1317,6 +1317,7 @@ static void map_anon_folio_pmd(struct folio *folio, pmd_t *pmd, count_vm_event(THP_FAULT_ALLOC); count_mthp_stat(HPAGE_PMD_ORDER, MTHP_STAT_ANON_FAULT_ALLOC); count_memcg_event_mm(vma->vm_mm, THP_FAULT_ALLOC); + deferred_split_folio(folio, false); } static vm_fault_t __do_huge_pmd_anonymous_page(struct vm_fault *vmf) @@ -1357,7 +1358,6 @@ static vm_fault_t __do_huge_pmd_anonymous_page(struct vm_fault *vmf) pgtable_trans_huge_deposit(vma->vm_mm, vmf->pmd, pgtable); map_anon_folio_pmd(folio, vmf->pmd, vma, haddr); mm_inc_nr_ptes(vma->vm_mm); - deferred_split_folio(folio, false); spin_unlock(vmf->ptl); } -- 2.34.1

1 month, 3 weeks

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[PATCH] media: mtk-mdp: Fix a reference leak bug in mtk_mdp_remove()

by Haoxiang Li

In mtk_mdp_probe(), vpu_get_plat_device() increases the reference count of the returned platform device. Add platform_device_put() to prevent reference leak. Fixes: c8eb2d7e8202 ("[media] media: Add Mediatek MDP Driver") Cc: stable(a)vger.kernel.org Signed-off-by: Haoxiang Li <haoxiang_li2024(a)163.com> --- drivers/media/platform/mediatek/mdp/mtk_mdp_core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c b/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c index 80fdc6ff57e0..eb212ca1a083 100644 --- a/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c +++ b/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c @@ -242,6 +242,7 @@ static void mtk_mdp_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); vb2_dma_contig_clear_max_seg_size(&pdev->dev); + platform_device_put(mdp->vpu_dev); mtk_mdp_unregister_m2m_device(mdp); v4l2_device_unregister(&mdp->v4l2_dev); -- 2.25.1

1 month, 3 weeks

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[PATCH v3] media: mtk-mdp: Fix error handling in probe function

by Haoxiang Li

Add mtk_mdp_unregister_m2m_device() on the error handling path to prevent resource leak. Add check for the return value of vpu_get_plat_device() to prevent null pointer dereference. And vpu_get_plat_device() increases the reference count of the returned platform device. Add platform_device_put() to prevent reference leak. Fixes: c8eb2d7e8202 ("[media] media: Add Mediatek MDP Driver") Cc: stable(a)vger.kernel.org Signed-off-by: Haoxiang Li <haoxiang_li2024(a)163.com> --- Changes in v3: - Modify the patch subject and description. - Patch v2 is a little bit verbose and trivial, so I changed the subject and moved the fixes of mtk_mdp_remove to a separate patch. Thanks, Nicolas! Changes in v2: - Add check for vpu_get_plat_device() - Add platform_device_put() in mtk_mdp_remove() - Add mtk_mdp_unregister_m2m_device() on the error handling path. - Modify the patch title and description. I think you are right. Thanks, CJ! --- .../media/platform/mediatek/mdp/mtk_mdp_core.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c b/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c index 80fdc6ff57e0..f78fa30f1864 100644 --- a/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c +++ b/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c @@ -194,11 +194,17 @@ static int mtk_mdp_probe(struct platform_device *pdev) } mdp->vpu_dev = vpu_get_plat_device(pdev); + if (!mdp->vpu_dev) { + dev_err(&pdev->dev, "Failed to get vpu device\n"); + ret = -ENODEV; + goto err_vpu_get_dev; + } + ret = vpu_wdt_reg_handler(mdp->vpu_dev, mtk_mdp_reset_handler, mdp, VPU_RST_MDP); if (ret) { dev_err(&pdev->dev, "Failed to register reset handler\n"); - goto err_m2m_register; + goto err_reg_handler; } platform_set_drvdata(pdev, mdp); @@ -206,7 +212,7 @@ static int mtk_mdp_probe(struct platform_device *pdev) ret = vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32)); if (ret) { dev_err(&pdev->dev, "Failed to set vb2 dma mag seg size\n"); - goto err_m2m_register; + goto err_reg_handler; } pm_runtime_enable(dev); @@ -214,6 +220,12 @@ static int mtk_mdp_probe(struct platform_device *pdev) return 0; +err_reg_handler: + platform_device_put(mdp->vpu_dev); + +err_vpu_get_dev: + mtk_mdp_unregister_m2m_device(mdp); + err_m2m_register: v4l2_device_unregister(&mdp->v4l2_dev); -- 2.25.1

1 month, 3 weeks

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[PATCH 0/1] Backport request: Fix reading issue on mcp2221

by Romain Sioen

Hi maintainers, Please consider backporting the following patches to the stable trees. These patches fix a significant reading issue with mcp2221 on i2c eeprom. This request is following the one I did previously to fix hid-mcp2221 in previous LTS versions. I have confirmed that the patches applie cleanly and build successfully against v6.12, v6.6, v6.1, v5.15 and v5.10 stable branches. Thanks, Romain Arnaud Lecomte (1): hid: fix I2C read buffer overflow in raw_event() for mcp2221 drivers/hid/hid-mcp2221.c | 4 ++++ 1 file changed, 4 insertions(+) -- 2.48.1

1 month, 3 weeks

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+ mm-damon-sysfs-dealloc-commit-test-ctx-always.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: mm/damon/sysfs: dealloc commit test ctx always has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-damon-sysfs-dealloc-commit-test-ctx-always.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: SeongJae Park <sj(a)kernel.org> Subject: mm/damon/sysfs: dealloc commit test ctx always Date: Fri, 3 Oct 2025 13:14:55 -0700 The damon_ctx for testing online DAMON parameters commit inputs is deallocated only when the test fails. This means memory is leaked for every successful online DAMON parameters commit. Fix the leak by always deallocating it. Link: https://lkml.kernel.org/r/20251003201455.41448-3-sj@kernel.org Fixes: 4c9ea539ad59 ("mm/damon/sysfs: validate user inputs from damon_sysfs_commit_input()") Signed-off-by: SeongJae Park <sj(a)kernel.org> Cc: <stable(a)vger.kernel.org> [6.15+] Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/damon/sysfs.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) --- a/mm/damon/sysfs.c~mm-damon-sysfs-dealloc-commit-test-ctx-always +++ a/mm/damon/sysfs.c @@ -1476,12 +1476,11 @@ static int damon_sysfs_commit_input(void if (!test_ctx) return -ENOMEM; err = damon_commit_ctx(test_ctx, param_ctx); - if (err) { - damon_destroy_ctx(test_ctx); + if (err) goto out; - } err = damon_commit_ctx(kdamond->damon_ctx, param_ctx); out: + damon_destroy_ctx(test_ctx); damon_destroy_ctx(param_ctx); return err; } _ Patches currently in -mm which might be from sj(a)kernel.org are mm-damon-sysfs-catch-commit-test-ctx-alloc-failure.patch mm-damon-sysfs-dealloc-commit-test-ctx-always.patch mm-zswap-remove-unnecessary-dlen-writes-for-incompressible-pages.patch mm-zswap-fix-typos-s-zwap-zswap.patch mm-zswap-s-red-black-tree-xarray.patch docs-admin-guide-mm-zswap-s-red-black-tree-xarray.patch

1 month, 3 weeks

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+ mm-damon-sysfs-catch-commit-test-ctx-alloc-failure.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: mm/damon/sysfs: catch commit test ctx alloc failure has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-damon-sysfs-catch-commit-test-ctx-alloc-failure.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: SeongJae Park <sj(a)kernel.org> Subject: mm/damon/sysfs: catch commit test ctx alloc failure Date: Fri, 3 Oct 2025 13:14:54 -0700 The damon_ctx for testing online DAMON parameters commit inputs is used without its allocation failure check. This could result in an invalid memory access. Fix it by directly returning an error when the allocation failed. Link: https://lkml.kernel.org/r/20251003201455.41448-2-sj@kernel.org Fixes: 4c9ea539ad59 ("mm/damon/sysfs: validate user inputs from damon_sysfs_commit_input()") Signed-off-by: SeongJae Park <sj(a)kernel.org> Cc: <stable(a)vger.kernel.org> [6.15+] Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/damon/sysfs.c | 2 ++ 1 file changed, 2 insertions(+) --- a/mm/damon/sysfs.c~mm-damon-sysfs-catch-commit-test-ctx-alloc-failure +++ a/mm/damon/sysfs.c @@ -1473,6 +1473,8 @@ static int damon_sysfs_commit_input(void if (IS_ERR(param_ctx)) return PTR_ERR(param_ctx); test_ctx = damon_new_ctx(); + if (!test_ctx) + return -ENOMEM; err = damon_commit_ctx(test_ctx, param_ctx); if (err) { damon_destroy_ctx(test_ctx); _ Patches currently in -mm which might be from sj(a)kernel.org are mm-damon-sysfs-catch-commit-test-ctx-alloc-failure.patch mm-damon-sysfs-dealloc-commit-test-ctx-always.patch mm-zswap-remove-unnecessary-dlen-writes-for-incompressible-pages.patch mm-zswap-fix-typos-s-zwap-zswap.patch mm-zswap-s-red-black-tree-xarray.patch docs-admin-guide-mm-zswap-s-red-black-tree-xarray.patch

1 month, 3 weeks

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+ mm-swap-do-not-perform-synchronous-discard-during-allocation.patch added to mm-new branch

by Andrew Morton

The patch titled Subject: mm, swap: do not perform synchronous discard during allocation has been added to the -mm mm-new branch. Its filename is mm-swap-do-not-perform-synchronous-discard-during-allocation.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Kairui Song <kasong(a)tencent.com> Subject: mm, swap: do not perform synchronous discard during allocation Date: Tue, 07 Oct 2025 04:02:33 +0800 Patch series "mm, swap: misc cleanup and bugfix". A few cleanups and a bugfix that are either suitable after the swap table phase I or found during code review. Patch 1 is a bugfix and needs to be included in the stable branch, the rest have no behavior change. This patch (of 4): Since commit 1b7e90020eb77 ("mm, swap: use percpu cluster as allocation fast path"), swap allocation is protected by a local lock, which means we can't do any sleeping calls during allocation. However, the discard routine is not taken well care of. When the swap allocator failed to find any usable cluster, it would look at the pending discard cluster and try to issue some blocking discards. It may not necessarily sleep, but the cond_resched at the bio layer indicates this is wrong when combined with a local lock. And the bio GFP flag used for discard bio is also wrong (not atomic). It's arguable whether this synchronous discard is helpful at all. In most cases, the async discard is good enough. And the swap allocator is doing very differently at organizing the clusters since the recent change, so it is very rare to see discard clusters piling up. So far, no issues have been observed or reported with typical SSD setups under months of high pressure. This issue was found during my code review. But by hacking the kernel a bit: adding a mdelay(100) in the async discard path, this issue will be observable with WARNING triggered by the wrong GFP and cond_resched in the bio layer. So let's fix this issue in a safe way: remove the synchronous discard in the swap allocation path. And when order 0 is failing with all cluster list drained on all swap devices, try to do a discard following the swap device priority list. If any discards released some cluster, try the allocation again. This way, we can still avoid OOM due to swap failure if the hardware is very slow and memory pressure is extremely high. Link: https://lkml.kernel.org/r/20251007-swap-clean-after-swap-table-p1-v1-0-7486… Link: https://lkml.kernel.org/r/20251007-swap-clean-after-swap-table-p1-v1-1-7486… Fixes: 1b7e90020eb77 ("mm, swap: use percpu cluster as allocation fast path") Signed-off-by: Kairui Song <kasong(a)tencent.com> Cc: Baolin Wang <baolin.wang(a)linux.alibaba.com> Cc: Baoquan He <bhe(a)redhat.com> Cc: Barry Song <baohua(a)kernel.org> Cc: Chris Li <chrisl(a)kernel.org> Cc: David Hildenbrand <david(a)redhat.com> Cc: "Huang, Ying" <ying.huang(a)linux.alibaba.com> Cc: Kemeng Shi <shikemeng(a)huaweicloud.com> Cc: Matthew Wilcox (Oracle) <willy(a)infradead.org> Cc: Nhat Pham <nphamcs(a)gmail.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/swapfile.c | 40 +++++++++++++++++++++++++++++++++------- 1 file changed, 33 insertions(+), 7 deletions(-) --- a/mm/swapfile.c~mm-swap-do-not-perform-synchronous-discard-during-allocation +++ a/mm/swapfile.c @@ -1101,13 +1101,6 @@ new_cluster: goto done; } - /* - * We don't have free cluster but have some clusters in discarding, - * do discard now and reclaim them. - */ - if ((si->flags & SWP_PAGE_DISCARD) && swap_do_scheduled_discard(si)) - goto new_cluster; - if (order) goto done; @@ -1394,6 +1387,33 @@ start_over: return false; } +/* + * Discard pending clusters in a synchronized way when under high pressure. + * Return: true if any cluster is discarded. + */ +static bool swap_sync_discard(void) +{ + bool ret = false; + int nid = numa_node_id(); + struct swap_info_struct *si, *next; + + spin_lock(&swap_avail_lock); + plist_for_each_entry_safe(si, next, &swap_avail_heads[nid], avail_lists[nid]) { + spin_unlock(&swap_avail_lock); + if (get_swap_device_info(si)) { + if (si->flags & SWP_PAGE_DISCARD) + ret = swap_do_scheduled_discard(si); + put_swap_device(si); + } + if (ret) + break; + spin_lock(&swap_avail_lock); + } + spin_unlock(&swap_avail_lock); + + return ret; +} + /** * folio_alloc_swap - allocate swap space for a folio * @folio: folio we want to move to swap @@ -1432,11 +1452,17 @@ int folio_alloc_swap(struct folio *folio } } +again: local_lock(&percpu_swap_cluster.lock); if (!swap_alloc_fast(&entry, order)) swap_alloc_slow(&entry, order); local_unlock(&percpu_swap_cluster.lock); + if (unlikely(!order && !entry.val)) { + if (swap_sync_discard()) + goto again; + } + /* Need to call this even if allocation failed, for MEMCG_SWAP_FAIL. */ if (mem_cgroup_try_charge_swap(folio, entry)) goto out_free; _ Patches currently in -mm which might be from kasong(a)tencent.com are mm-swap-do-not-perform-synchronous-discard-during-allocation.patch mm-swap-rename-helper-for-setup-bad-slots.patch mm-swap-cleanup-swap-entry-allocation-parameter.patch mm-migrate-swap-drop-usage-of-folio_index.patch

1 month, 3 weeks

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+ mm-ksm-fix-exec-fork-inheritance-support-for-prctl.patch added to mm-new branch

by Andrew Morton

The patch titled Subject: mm/ksm: fix exec/fork inheritance support for prctl has been added to the -mm mm-new branch. Its filename is mm-ksm-fix-exec-fork-inheritance-support-for-prctl.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: xu xin <xu.xin16(a)zte.com.cn> Subject: mm/ksm: fix exec/fork inheritance support for prctl Date: Tue, 7 Oct 2025 18:28:21 +0800 (CST) Patch series "ksm: fix exec/fork inheritance", v2. This series fixes exec/fork inheritance. See the detailed description of the issue below. This patch (of 2): Background ========== commit d7597f59d1d33 ("mm: add new api to enable ksm per process") introduced MMF_VM_MERGE_ANY for mm->flags, and allowed user to set it by prctl() so that the process's VMAs are forcibly scanned by ksmd. Subsequently, the 3c6f33b7273a ("mm/ksm: support fork/exec for prctl") supported inheriting the MMF_VM_MERGE_ANY flag when a task calls execve(). Finally, commit 3a9e567ca45fb ("mm/ksm: fix ksm exec support for prctl") fixed the issue that ksmd doesn't scan the mm_struct with MMF_VM_MERGE_ANY by adding the mm_slot to ksm_mm_head in __bprm_mm_init(). Problem ======= In some extreme scenarios, however, this inheritance of MMF_VM_MERGE_ANY during exec/fork can fail. For example, when the scanning frequency of ksmd is tuned extremely high, a process carrying MMF_VM_MERGE_ANY may still fail to pass it to the newly exec'd process. This happens because ksm_execve() is executed too early in the do_execve flow (prematurely adding the new mm_struct to the ksm_mm_slot list). As a result, before do_execve completes, ksmd may have already performed a scan and found that this new mm_struct has no VM_MERGEABLE VMAs, thus clearing its MMF_VM_MERGE_ANY flag. Consequently, when the new program executes, the flag MMF_VM_MERGE_ANY inheritance missed. Root reason =========== commit d7597f59d1d33 ("mm: add new api to enable ksm per process") clear the flag MMF_VM_MERGE_ANY when ksmd found no VM_MERGEABLE VMAs. Solution ======== Firstly, Don't clear MMF_VM_MERGE_ANY when ksmd found no VM_MERGEABLE VMAs, because perhaps their mm_struct has just been added to ksm_mm_slot list, and its process has not yet officially started running or has not yet performed mmap/brk to allocate anonymous VMAS. Secondly, recheck MMF_VM_MERGEABLE again if a process takes MMF_VM_MERGE_ANY, and create a mm_slot and join it into ksm_scan_list again. Link: https://lkml.kernel.org/r/20251007182504440BJgK8VXRHh8TD7IGSUIY4@zte.com.cn Link: https://lkml.kernel.org/r/20251007182821572h_SoFqYZXEP1mvWI4n9VL@zte.com.cn Fixes: 3c6f33b7273a ("mm/ksm: support fork/exec for prctl") Fixes: d7597f59d1d3 ("mm: add new api to enable ksm per process") Signed-off-by: xu xin <xu.xin16(a)zte.com.cn> Cc: Stefan Roesch <shr(a)devkernel.io> Cc: David Hildenbrand <david(a)redhat.com> Cc: Jinjiang Tu <tujinjiang(a)huawei.com> Cc: Wang Yaxin <wang.yaxin(a)zte.com.cn> Cc: Yang Yang <yang.yang29(a)zte.com.cn> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- include/linux/ksm.h | 4 ++-- mm/ksm.c | 20 +++++++++++++++++--- 2 files changed, 19 insertions(+), 5 deletions(-) --- a/include/linux/ksm.h~mm-ksm-fix-exec-fork-inheritance-support-for-prctl +++ a/include/linux/ksm.h @@ -17,7 +17,7 @@ #ifdef CONFIG_KSM int ksm_madvise(struct vm_area_struct *vma, unsigned long start, unsigned long end, int advice, vm_flags_t *vm_flags); -vm_flags_t ksm_vma_flags(const struct mm_struct *mm, const struct file *file, +vm_flags_t ksm_vma_flags(struct mm_struct *mm, const struct file *file, vm_flags_t vm_flags); int ksm_enable_merge_any(struct mm_struct *mm); int ksm_disable_merge_any(struct mm_struct *mm); @@ -103,7 +103,7 @@ bool ksm_process_mergeable(struct mm_str #else /* !CONFIG_KSM */ -static inline vm_flags_t ksm_vma_flags(const struct mm_struct *mm, +static inline vm_flags_t ksm_vma_flags(struct mm_struct *mm, const struct file *file, vm_flags_t vm_flags) { return vm_flags; --- a/mm/ksm.c~mm-ksm-fix-exec-fork-inheritance-support-for-prctl +++ a/mm/ksm.c @@ -2617,8 +2617,14 @@ no_vmas: spin_unlock(&ksm_mmlist_lock); mm_slot_free(mm_slot_cache, mm_slot); + /* + * Only clear MMF_VM_MERGEABLE. We must not clear + * MMF_VM_MERGE_ANY, because for those MMF_VM_MERGE_ANY process, + * perhaps their mm_struct has just been added to ksm_mm_slot + * list, and its process has not yet officially started running + * or has not yet performed mmap/brk to allocate anonymous VMAS. + */ mm_flags_clear(MMF_VM_MERGEABLE, mm); - mm_flags_clear(MMF_VM_MERGE_ANY, mm); mmap_read_unlock(mm); mmdrop(mm); } else { @@ -2736,12 +2742,20 @@ static int __ksm_del_vma(struct vm_area_ * * Returns: @vm_flags possibly updated to mark mergeable. */ -vm_flags_t ksm_vma_flags(const struct mm_struct *mm, const struct file *file, +vm_flags_t ksm_vma_flags(struct mm_struct *mm, const struct file *file, vm_flags_t vm_flags) { if (mm_flags_test(MMF_VM_MERGE_ANY, mm) && - __ksm_should_add_vma(file, vm_flags)) + __ksm_should_add_vma(file, vm_flags)) { vm_flags |= VM_MERGEABLE; + /* + * Generally, the flags here always include MMF_VM_MERGEABLE. + * However, in rare cases, this flag may be cleared by ksmd who + * scans a cycle without finding any mergeable vma. + */ + if (unlikely(!mm_flags_test(MMF_VM_MERGEABLE, mm))) + __ksm_enter(mm); + } return vm_flags; } _ Patches currently in -mm which might be from xu.xin16(a)zte.com.cn are mm-ksm-fix-exec-fork-inheritance-support-for-prctl.patch selftests-update-ksm-inheritation-tests-for-prctl-fork-exec.patch

1 month, 3 weeks

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[merged mm-hotfixes-stable] mm-hugetlb-avoid-soft-lockup-when-mprotect-to-large-memory-area.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: mm: hugetlb: avoid soft lockup when mprotect to large memory area has been removed from the -mm tree. Its filename was mm-hugetlb-avoid-soft-lockup-when-mprotect-to-large-memory-area.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Yang Shi <yang(a)os.amperecomputing.com> Subject: mm: hugetlb: avoid soft lockup when mprotect to large memory area Date: Mon, 29 Sep 2025 13:24:02 -0700 When calling mprotect() to a large hugetlb memory area in our customer's workload (~300GB hugetlb memory), soft lockup was observed: watchdog: BUG: soft lockup - CPU#98 stuck for 23s! [t2_new_sysv:126916] CPU: 98 PID: 126916 Comm: t2_new_sysv Kdump: loaded Not tainted 6.17-rc7 Hardware name: GIGACOMPUTING R2A3-T40-AAV1/Jefferson CIO, BIOS 5.4.4.1 07/15/2025 pstate: 20400009 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc��: mte_clear_page_tags+0x14/0x24 lr��: mte_sync_tags+0x1c0/0x240 sp��: ffff80003150bb80 x29: ffff80003150bb80 x28: ffff00739e9705a8 x27: 0000ffd2d6a00000 x26: 0000ff8e4bc00000 x25: 00e80046cde00f45 x24: 0000000000022458 x23: 0000000000000000 x22: 0000000000000004 x21: 000000011b380000 x20: ffff000000000000 x19: 000000011b379f40 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : ffffc875e0aa5e2c x8��: 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000 x5��: fffffc01ce7a5c00 x4 : 00000000046cde00 x3 : fffffc0000000000 x2��: 0000000000000004 x1 : 0000000000000040 x0 : ffff0046cde7c000 Call trace: ��mte_clear_page_tags+0x14/0x24 ��set_huge_pte_at+0x25c/0x280 ��hugetlb_change_protection+0x220/0x430 ��change_protection+0x5c/0x8c ��mprotect_fixup+0x10c/0x294 ��do_mprotect_pkey.constprop.0+0x2e0/0x3d4 ��__arm64_sys_mprotect+0x24/0x44 ��invoke_syscall+0x50/0x160 ��el0_svc_common+0x48/0x144 ��do_el0_svc+0x30/0xe0 ��el0_svc+0x30/0xf0 ��el0t_64_sync_handler+0xc4/0x148 ��el0t_64_sync+0x1a4/0x1a8 Soft lockup is not triggered with THP or base page because there is cond_resched() called for each PMD size. Although the soft lockup was triggered by MTE, it should be not MTE specific. The other processing which takes long time in the loop may trigger soft lockup too. So add cond_resched() for hugetlb to avoid soft lockup. Link: https://lkml.kernel.org/r/20250929202402.1663290-1-yang@os.amperecomputing.… Fixes: 8f860591ffb2 ("[PATCH] Enable mprotect on huge pages") Signed-off-by: Yang Shi <yang(a)os.amperecomputing.com> Tested-by: Carl Worth <carl(a)os.amperecomputing.com> Reviewed-by: Christoph Lameter (Ampere) <cl(a)gentwo.org> Reviewed-by: Catalin Marinas <catalin.marinas(a)arm.com> Acked-by: David Hildenbrand <david(a)redhat.com> Acked-by: Oscar Salvador <osalvador(a)suse.de> Reviewed-by: Anshuman Khandual <anshuman.khandual(a)arm.com> Reviewed-by: Dev Jain <dev.jain(a)arm.com> Cc: Muchun Song <muchun.song(a)linux.dev> Cc: Will Deacon <will(a)kernel.org> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/hugetlb.c | 2 ++ 1 file changed, 2 insertions(+) --- a/mm/hugetlb.c~mm-hugetlb-avoid-soft-lockup-when-mprotect-to-large-memory-area +++ a/mm/hugetlb.c @@ -7222,6 +7222,8 @@ long hugetlb_change_protection(struct vm psize); } spin_unlock(ptl); + + cond_resched(); } /* * Must flush TLB before releasing i_mmap_rwsem: x86's huge_pmd_unshare _ Patches currently in -mm which might be from yang(a)os.amperecomputing.com are

1 month, 3 weeks

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[merged mm-hotfixes-stable] fsnotify-pass-correct-offset-to-fsnotify_mmap_perm.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: fsnotify: pass correct offset to fsnotify_mmap_perm() has been removed from the -mm tree. Its filename was fsnotify-pass-correct-offset-to-fsnotify_mmap_perm.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Ryan Roberts <ryan.roberts(a)arm.com> Subject: fsnotify: pass correct offset to fsnotify_mmap_perm() Date: Fri, 3 Oct 2025 16:52:36 +0100 fsnotify_mmap_perm() requires a byte offset for the file about to be mmap'ed. But it is called from vm_mmap_pgoff(), which has a page offset. Previously the conversion was done incorrectly so let's fix it, being careful not to overflow on 32-bit platforms. Discovered during code review. Link: https://lkml.kernel.org/r/20251003155238.2147410-1-ryan.roberts@arm.com Fixes: 066e053fe208 ("fsnotify: add pre-content hooks on mmap()") Signed-off-by: Ryan Roberts <ryan.roberts(a)arm.com> Reviewed-by: Kiryl Shutsemau <kas(a)kernel.org> Cc: Amir Goldstein <amir73il(a)gmail.com> Cc: David Hildenbrand <david(a)redhat.com> Cc: Liam Howlett <liam.howlett(a)oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> Cc: Michal Hocko <mhocko(a)suse.com> Cc: Mike Rapoport <rppt(a)kernel.org> Cc: Suren Baghdasaryan <surenb(a)google.com> Cc: Vlastimil Babka <vbabka(a)suse.cz> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/util.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/mm/util.c~fsnotify-pass-correct-offset-to-fsnotify_mmap_perm +++ a/mm/util.c @@ -566,6 +566,7 @@ unsigned long vm_mmap_pgoff(struct file unsigned long len, unsigned long prot, unsigned long flag, unsigned long pgoff) { + loff_t off = (loff_t)pgoff << PAGE_SHIFT; unsigned long ret; struct mm_struct *mm = current->mm; unsigned long populate; @@ -573,7 +574,7 @@ unsigned long vm_mmap_pgoff(struct file ret = security_mmap_file(file, prot, flag); if (!ret) - ret = fsnotify_mmap_perm(file, prot, pgoff >> PAGE_SHIFT, len); + ret = fsnotify_mmap_perm(file, prot, off, len); if (!ret) { if (mmap_write_lock_killable(mm)) return -EINTR; _ Patches currently in -mm which might be from ryan.roberts(a)arm.com are

1 month, 3 weeks

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[merged mm-hotfixes-stable] mm-ksm-fix-flag-dropping-behavior-in-ksm_madvise.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: mm/ksm: fix flag-dropping behavior in ksm_madvise has been removed from the -mm tree. Its filename was mm-ksm-fix-flag-dropping-behavior-in-ksm_madvise.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Jakub Acs <acsjakub(a)amazon.de> Subject: mm/ksm: fix flag-dropping behavior in ksm_madvise Date: Wed, 1 Oct 2025 09:03:52 +0000 syzkaller discovered the following crash: (kernel BUG) [ 44.607039] ------------[ cut here ]------------ [ 44.607422] kernel BUG at mm/userfaultfd.c:2067! [ 44.608148] Oops: invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN NOPTI [ 44.608814] CPU: 1 UID: 0 PID: 2475 Comm: reproducer Not tainted 6.16.0-rc6 #1 PREEMPT(none) [ 44.609635] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.610695] RIP: 0010:userfaultfd_release_all+0x3a8/0x460 <snip other registers, drop unreliable trace> [ 44.617726] Call Trace: [ 44.617926] <TASK> [ 44.619284] userfaultfd_release+0xef/0x1b0 [ 44.620976] __fput+0x3f9/0xb60 [ 44.621240] fput_close_sync+0x110/0x210 [ 44.622222] __x64_sys_close+0x8f/0x120 [ 44.622530] do_syscall_64+0x5b/0x2f0 [ 44.622840] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 44.623244] RIP: 0033:0x7f365bb3f227 Kernel panics because it detects UFFD inconsistency during userfaultfd_release_all(). Specifically, a VMA which has a valid pointer to vma->vm_userfaultfd_ctx, but no UFFD flags in vma->vm_flags. The inconsistency is caused in ksm_madvise(): when user calls madvise() with MADV_UNMEARGEABLE on a VMA that is registered for UFFD in MINOR mode, it accidentally clears all flags stored in the upper 32 bits of vma->vm_flags. Assuming x86_64 kernel build, unsigned long is 64-bit and unsigned int and int are 32-bit wide. This setup causes the following mishap during the &= ~VM_MERGEABLE assignment. VM_MERGEABLE is a 32-bit constant of type unsigned int, 0x8000'0000. After ~ is applied, it becomes 0x7fff'ffff unsigned int, which is then promoted to unsigned long before the & operation. This promotion fills upper 32 bits with leading 0s, as we're doing unsigned conversion (and even for a signed conversion, this wouldn't help as the leading bit is 0). & operation thus ends up AND-ing vm_flags with 0x0000'0000'7fff'ffff instead of intended 0xffff'ffff'7fff'ffff and hence accidentally clears the upper 32-bits of its value. Fix it by changing `VM_MERGEABLE` constant to unsigned long, using the BIT() macro. Note: other VM_* flags are not affected: This only happens to the VM_MERGEABLE flag, as the other VM_* flags are all constants of type int and after ~ operation, they end up with leading 1 and are thus converted to unsigned long with leading 1s. Note 2: After commit 31defc3b01d9 ("userfaultfd: remove (VM_)BUG_ON()s"), this is no longer a kernel BUG, but a WARNING at the same place: [ 45.595973] WARNING: CPU: 1 PID: 2474 at mm/userfaultfd.c:2067 but the root-cause (flag-drop) remains the same. [akpm(a)linux-foundation.org: rust bindgen wasn't able to handle BIT(), from Miguel] Link: https://lore.kernel.org/oe-kbuild-all/202510030449.VfSaAjvd-lkp@intel.com/ Link: https://lkml.kernel.org/r/20251001090353.57523-2-acsjakub@amazon.de Fixes: 7677f7fd8be7 ("userfaultfd: add minor fault registration mode") Signed-off-by: Jakub Acs <acsjakub(a)amazon.de> Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis(a)gmail.com> Acked-by: David Hildenbrand <david(a)redhat.com> Acked-by: SeongJae Park <sj(a)kernel.org> Tested-by: Alice Ryhl <aliceryhl(a)google.com> Tested-by: Miguel Ojeda <miguel.ojeda.sandonis(a)gmail.com> Cc: Xu Xin <xu.xin16(a)zte.com.cn> Cc: Chengming Zhou <chengming.zhou(a)linux.dev> Cc: Peter Xu <peterx(a)redhat.com> Cc: Axel Rasmussen <axelrasmussen(a)google.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- include/linux/mm.h | 2 +- rust/bindings/bindings_helper.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) --- a/include/linux/mm.h~mm-ksm-fix-flag-dropping-behavior-in-ksm_madvise +++ a/include/linux/mm.h @@ -323,7 +323,7 @@ extern unsigned int kobjsize(const void #define VM_MIXEDMAP 0x10000000 /* Can contain "struct page" and pure PFN pages */ #define VM_HUGEPAGE 0x20000000 /* MADV_HUGEPAGE marked this vma */ #define VM_NOHUGEPAGE 0x40000000 /* MADV_NOHUGEPAGE marked this vma */ -#define VM_MERGEABLE 0x80000000 /* KSM may merge identical pages */ +#define VM_MERGEABLE BIT(31) /* KSM may merge identical pages */ #ifdef CONFIG_ARCH_USES_HIGH_VMA_FLAGS #define VM_HIGH_ARCH_BIT_0 32 /* bit only usable on 64-bit architectures */ --- a/rust/bindings/bindings_helper.h~mm-ksm-fix-flag-dropping-behavior-in-ksm_madvise +++ a/rust/bindings/bindings_helper.h @@ -108,6 +108,7 @@ const xa_mark_t RUST_CONST_HELPER_XA_PRE const gfp_t RUST_CONST_HELPER_XA_FLAGS_ALLOC = XA_FLAGS_ALLOC; const gfp_t RUST_CONST_HELPER_XA_FLAGS_ALLOC1 = XA_FLAGS_ALLOC1; +const vm_flags_t RUST_CONST_HELPER_VM_MERGEABLE = VM_MERGEABLE; #if IS_ENABLED(CONFIG_ANDROID_BINDER_IPC_RUST) #include "../../drivers/android/binder/rust_binder.h" _ Patches currently in -mm which might be from acsjakub(a)amazon.de are mm-redefine-vm_-flag-constants-with-bit.patch

1 month, 3 weeks

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[merged mm-hotfixes-stable] mm-damon-vaddr-do-not-repeat-pte_offset_map_lock-until-success.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: mm/damon/vaddr: do not repeat pte_offset_map_lock() until success has been removed from the -mm tree. Its filename was mm-damon-vaddr-do-not-repeat-pte_offset_map_lock-until-success.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: SeongJae Park <sj(a)kernel.org> Subject: mm/damon/vaddr: do not repeat pte_offset_map_lock() until success Date: Mon, 29 Sep 2025 17:44:09 -0700 DAMON's virtual address space operation set implementation (vaddr) calls pte_offset_map_lock() inside the page table walk callback function. This is for reading and writing page table accessed bits. If pte_offset_map_lock() fails, it retries by returning the page table walk callback function with ACTION_AGAIN. pte_offset_map_lock() can continuously fail if the target is a pmd migration entry, though. Hence it could cause an infinite page table walk if the migration cannot be done until the page table walk is finished. This indeed caused a soft lockup when CPU hotplugging and DAMON were running in parallel. Avoid the infinite loop by simply not retrying the page table walk. DAMON is promising only a best-effort accuracy, so missing access to such pages is no problem. Link: https://lkml.kernel.org/r/20250930004410.55228-1-sj@kernel.org Fixes: 7780d04046a2 ("mm/pagewalkers: ACTION_AGAIN if pte_offset_map_lock() fails") Signed-off-by: SeongJae Park <sj(a)kernel.org> Reported-by: Xinyu Zheng <zhengxinyu6(a)huawei.com> Closes: https://lore.kernel.org/20250918030029.2652607-1-zhengxinyu6@huawei.com Acked-by: Hugh Dickins <hughd(a)google.com> Cc: <stable(a)vger.kernel.org> [6.5+] Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/damon/vaddr.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) --- a/mm/damon/vaddr.c~mm-damon-vaddr-do-not-repeat-pte_offset_map_lock-until-success +++ a/mm/damon/vaddr.c @@ -328,10 +328,8 @@ static int damon_mkold_pmd_entry(pmd_t * } pte = pte_offset_map_lock(walk->mm, pmd, addr, &ptl); - if (!pte) { - walk->action = ACTION_AGAIN; + if (!pte) return 0; - } if (!pte_present(ptep_get(pte))) goto out; damon_ptep_mkold(pte, walk->vma, addr); @@ -481,10 +479,8 @@ regular_page: #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ pte = pte_offset_map_lock(walk->mm, pmd, addr, &ptl); - if (!pte) { - walk->action = ACTION_AGAIN; + if (!pte) return 0; - } ptent = ptep_get(pte); if (!pte_present(ptent)) goto out; _ Patches currently in -mm which might be from sj(a)kernel.org are

1 month, 3 weeks

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[merged mm-hotfixes-stable] mm-rmap-fix-soft-dirty-and-uffd-wp-bit-loss-when-remapping-zero-filled-mthp-subpage-to-shared-zeropage.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: mm/rmap: fix soft-dirty and uffd-wp bit loss when remapping zero-filled mTHP subpage to shared zeropage has been removed from the -mm tree. Its filename was mm-rmap-fix-soft-dirty-and-uffd-wp-bit-loss-when-remapping-zero-filled-mthp-subpage-to-shared-zeropage.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Lance Yang <lance.yang(a)linux.dev> Subject: mm/rmap: fix soft-dirty and uffd-wp bit loss when remapping zero-filled mTHP subpage to shared zeropage Date: Tue, 30 Sep 2025 16:10:40 +0800 When splitting an mTHP and replacing a zero-filled subpage with the shared zeropage, try_to_map_unused_to_zeropage() currently drops several important PTE bits. For userspace tools like CRIU, which rely on the soft-dirty mechanism for incremental snapshots, losing the soft-dirty bit means modified pages are missed, leading to inconsistent memory state after restore. As pointed out by David, the more critical uffd-wp bit is also dropped. This breaks the userfaultfd write-protection mechanism, causing writes to be silently missed by monitoring applications, which can lead to data corruption. Preserve both the soft-dirty and uffd-wp bits from the old PTE when creating the new zeropage mapping to ensure they are correctly tracked. Link: https://lkml.kernel.org/r/20250930081040.80926-1-lance.yang@linux.dev Fixes: b1f202060afe ("mm: remap unused subpages to shared zeropage when splitting isolated thp") Signed-off-by: Lance Yang <lance.yang(a)linux.dev> Suggested-by: David Hildenbrand <david(a)redhat.com> Suggested-by: Dev Jain <dev.jain(a)arm.com> Acked-by: David Hildenbrand <david(a)redhat.com> Reviewed-by: Dev Jain <dev.jain(a)arm.com> Acked-by: Zi Yan <ziy(a)nvidia.com> Reviewed-by: Liam R. Howlett <Liam.Howlett(a)oracle.com> Reviewed-by: Harry Yoo <harry.yoo(a)oracle.com> Cc: Alistair Popple <apopple(a)nvidia.com> Cc: Baolin Wang <baolin.wang(a)linux.alibaba.com> Cc: Barry Song <baohua(a)kernel.org> Cc: Byungchul Park <byungchul(a)sk.com> Cc: Gregory Price <gourry(a)gourry.net> Cc: "Huang, Ying" <ying.huang(a)linux.alibaba.com> Cc: Jann Horn <jannh(a)google.com> Cc: Joshua Hahn <joshua.hahnjy(a)gmail.com> Cc: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> Cc: Mariano Pache <npache(a)redhat.com> Cc: Mathew Brost <matthew.brost(a)intel.com> Cc: Peter Xu <peterx(a)redhat.com> Cc: Rakie Kim <rakie.kim(a)sk.com> Cc: Rik van Riel <riel(a)surriel.com> Cc: Ryan Roberts <ryan.roberts(a)arm.com> Cc: Usama Arif <usamaarif642(a)gmail.com> Cc: Vlastimil Babka <vbabka(a)suse.cz> Cc: Yu Zhao <yuzhao(a)google.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/migrate.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) --- a/mm/migrate.c~mm-rmap-fix-soft-dirty-and-uffd-wp-bit-loss-when-remapping-zero-filled-mthp-subpage-to-shared-zeropage +++ a/mm/migrate.c @@ -296,8 +296,7 @@ bool isolate_folio_to_list(struct folio } static bool try_to_map_unused_to_zeropage(struct page_vma_mapped_walk *pvmw, - struct folio *folio, - unsigned long idx) + struct folio *folio, pte_t old_pte, unsigned long idx) { struct page *page = folio_page(folio, idx); pte_t newpte; @@ -306,7 +305,7 @@ static bool try_to_map_unused_to_zeropag return false; VM_BUG_ON_PAGE(!PageAnon(page), page); VM_BUG_ON_PAGE(!PageLocked(page), page); - VM_BUG_ON_PAGE(pte_present(ptep_get(pvmw->pte)), page); + VM_BUG_ON_PAGE(pte_present(old_pte), page); if (folio_test_mlocked(folio) || (pvmw->vma->vm_flags & VM_LOCKED) || mm_forbids_zeropage(pvmw->vma->vm_mm)) @@ -322,6 +321,12 @@ static bool try_to_map_unused_to_zeropag newpte = pte_mkspecial(pfn_pte(my_zero_pfn(pvmw->address), pvmw->vma->vm_page_prot)); + + if (pte_swp_soft_dirty(old_pte)) + newpte = pte_mksoft_dirty(newpte); + if (pte_swp_uffd_wp(old_pte)) + newpte = pte_mkuffd_wp(newpte); + set_pte_at(pvmw->vma->vm_mm, pvmw->address, pvmw->pte, newpte); dec_mm_counter(pvmw->vma->vm_mm, mm_counter(folio)); @@ -364,13 +369,13 @@ static bool remove_migration_pte(struct continue; } #endif + old_pte = ptep_get(pvmw.pte); if (rmap_walk_arg->map_unused_to_zeropage && - try_to_map_unused_to_zeropage(&pvmw, folio, idx)) + try_to_map_unused_to_zeropage(&pvmw, folio, old_pte, idx)) continue; folio_get(folio); pte = mk_pte(new, READ_ONCE(vma->vm_page_prot)); - old_pte = ptep_get(pvmw.pte); entry = pte_to_swp_entry(old_pte); if (!is_migration_entry_young(entry)) _ Patches currently in -mm which might be from lance.yang(a)linux.dev are hung_task-fix-warnings-caused-by-unaligned-lock-pointers.patch mm-khugepaged-abort-collapse-scan-on-non-swap-entries.patch

1 month, 3 weeks

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[merged mm-hotfixes-stable] mm-thp-fix-mte-tag-mismatch-when-replacing-zero-filled-subpages.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: mm/thp: fix MTE tag mismatch when replacing zero-filled subpages has been removed from the -mm tree. Its filename was mm-thp-fix-mte-tag-mismatch-when-replacing-zero-filled-subpages.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Lance Yang <lance.yang(a)linux.dev> Subject: mm/thp: fix MTE tag mismatch when replacing zero-filled subpages Date: Mon, 22 Sep 2025 10:14:58 +0800 From: Lance Yang <lance.yang(a)linux.dev> When both THP and MTE are enabled, splitting a THP and replacing its zero-filled subpages with the shared zeropage can cause MTE tag mismatch faults in userspace. Remapping zero-filled subpages to the shared zeropage is unsafe, as the zeropage has a fixed tag of zero, which may not match the tag expected by the userspace pointer. KSM already avoids this problem by using memcmp_pages(), which on arm64 intentionally reports MTE-tagged pages as non-identical to prevent unsafe merging. As suggested by David[1], this patch adopts the same pattern, replacing the memchr_inv() byte-level check with a call to pages_identical(). This leverages existing architecture-specific logic to determine if a page is truly identical to the shared zeropage. Having both the THP shrinker and KSM rely on pages_identical() makes the design more future-proof, IMO. Instead of handling quirks in generic code, we just let the architecture decide what makes two pages identical. [1] https://lore.kernel.org/all/ca2106a3-4bb2-4457-81af-301fd99fbef4@redhat.com Link: https://lkml.kernel.org/r/20250922021458.68123-1-lance.yang@linux.dev Fixes: b1f202060afe ("mm: remap unused subpages to shared zeropage when splitting isolated thp") Signed-off-by: Lance Yang <lance.yang(a)linux.dev> Reported-by: Qun-wei Lin <Qun-wei.Lin(a)mediatek.com> Closes: https://lore.kernel.org/all/a7944523fcc3634607691c35311a5d59d1a3f8d4.camel@… Suggested-by: David Hildenbrand <david(a)redhat.com> Acked-by: Zi Yan <ziy(a)nvidia.com> Acked-by: David Hildenbrand <david(a)redhat.com> Acked-by: Usama Arif <usamaarif642(a)gmail.com> Reviewed-by: Catalin Marinas <catalin.marinas(a)arm.com> Reviewed-by: Wei Yang <richard.weiyang(a)gmail.com> Cc: Alistair Popple <apopple(a)nvidia.com> Cc: andrew.yang <andrew.yang(a)mediatek.com> Cc: Baolin Wang <baolin.wang(a)linux.alibaba.com> Cc: Barry Song <baohua(a)kernel.org> Cc: Byungchul Park <byungchul(a)sk.com> Cc: Charlie Jenkins <charlie(a)rivosinc.com> Cc: Chinwen Chang <chinwen.chang(a)mediatek.com> Cc: Dev Jain <dev.jain(a)arm.com> Cc: Domenico Cerasuolo <cerasuolodomenico(a)gmail.com> Cc: Gregory Price <gourry(a)gourry.net> Cc: "Huang, Ying" <ying.huang(a)linux.alibaba.com> Cc: Hugh Dickins <hughd(a)google.com> Cc: Johannes Weiner <hannes(a)cmpxchg.org> Cc: Joshua Hahn <joshua.hahnjy(a)gmail.com> Cc: Kairui Song <ryncsn(a)gmail.com> Cc: Kalesh Singh <kaleshsingh(a)google.com> Cc: Liam Howlett <liam.howlett(a)oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> Cc: Mariano Pache <npache(a)redhat.com> Cc: Mathew Brost <matthew.brost(a)intel.com> Cc: Matthew Wilcox (Oracle) <willy(a)infradead.org> Cc: Mike Rapoport <rppt(a)kernel.org> Cc: Palmer Dabbelt <palmer(a)rivosinc.com> Cc: Rakie Kim <rakie.kim(a)sk.com> Cc: Rik van Riel <riel(a)surriel.com> Cc: Roman Gushchin <roman.gushchin(a)linux.dev> Cc: Ryan Roberts <ryan.roberts(a)arm.com> Cc: Samuel Holland <samuel.holland(a)sifive.com> Cc: Shakeel Butt <shakeel.butt(a)linux.dev> Cc: Suren Baghdasaryan <surenb(a)google.com> Cc: Yu Zhao <yuzhao(a)google.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/huge_memory.c | 15 +++------------ mm/migrate.c | 8 +------- 2 files changed, 4 insertions(+), 19 deletions(-) --- a/mm/huge_memory.c~mm-thp-fix-mte-tag-mismatch-when-replacing-zero-filled-subpages +++ a/mm/huge_memory.c @@ -4104,32 +4104,23 @@ static unsigned long deferred_split_coun static bool thp_underused(struct folio *folio) { int num_zero_pages = 0, num_filled_pages = 0; - void *kaddr; int i; if (khugepaged_max_ptes_none == HPAGE_PMD_NR - 1) return false; for (i = 0; i < folio_nr_pages(folio); i++) { - kaddr = kmap_local_folio(folio, i * PAGE_SIZE); - if (!memchr_inv(kaddr, 0, PAGE_SIZE)) { - num_zero_pages++; - if (num_zero_pages > khugepaged_max_ptes_none) { - kunmap_local(kaddr); + if (pages_identical(folio_page(folio, i), ZERO_PAGE(0))) { + if (++num_zero_pages > khugepaged_max_ptes_none) return true; - } } else { /* * Another path for early exit once the number * of non-zero filled pages exceeds threshold. */ - num_filled_pages++; - if (num_filled_pages >= HPAGE_PMD_NR - khugepaged_max_ptes_none) { - kunmap_local(kaddr); + if (++num_filled_pages >= HPAGE_PMD_NR - khugepaged_max_ptes_none) return false; - } } - kunmap_local(kaddr); } return false; } --- a/mm/migrate.c~mm-thp-fix-mte-tag-mismatch-when-replacing-zero-filled-subpages +++ a/mm/migrate.c @@ -300,9 +300,7 @@ static bool try_to_map_unused_to_zeropag unsigned long idx) { struct page *page = folio_page(folio, idx); - bool contains_data; pte_t newpte; - void *addr; if (PageCompound(page)) return false; @@ -319,11 +317,7 @@ static bool try_to_map_unused_to_zeropag * this subpage has been non present. If the subpage is only zero-filled * then map it to the shared zeropage. */ - addr = kmap_local_page(page); - contains_data = memchr_inv(addr, 0, PAGE_SIZE); - kunmap_local(addr); - - if (contains_data) + if (!pages_identical(page, ZERO_PAGE(0))) return false; newpte = pte_mkspecial(pfn_pte(my_zero_pfn(pvmw->address), _ Patches currently in -mm which might be from lance.yang(a)linux.dev are hung_task-fix-warnings-caused-by-unaligned-lock-pointers.patch mm-khugepaged-abort-collapse-scan-on-non-swap-entries.patch

1 month, 3 weeks

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[merged mm-hotfixes-stable] memcg-skip-cgroup_file_notify-if-spinning-is-not-allowed.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: memcg: skip cgroup_file_notify if spinning is not allowed has been removed from the -mm tree. Its filename was memcg-skip-cgroup_file_notify-if-spinning-is-not-allowed.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Shakeel Butt <shakeel.butt(a)linux.dev> Subject: memcg: skip cgroup_file_notify if spinning is not allowed Date: Mon, 22 Sep 2025 15:02:03 -0700 Generally memcg charging is allowed from all the contexts including NMI where even spinning on spinlock can cause locking issues. However one call chain was missed during the addition of memcg charging from any context support. That is try_charge_memcg() -> memcg_memory_event() -> cgroup_file_notify(). The possible function call tree under cgroup_file_notify() can acquire many different spin locks in spinning mode. Some of them are cgroup_file_kn_lock, kernfs_notify_lock, pool_workqeue's lock. So, let's just skip cgroup_file_notify() from memcg charging if the context does not allow spinning. Alternative approach was also explored where instead of skipping cgroup_file_notify(), we defer the memcg event processing to irq_work [1]. However it adds complexity and it was decided to keep things simple until we need more memcg events with !allow_spinning requirement. Link: https://lore.kernel.org/all/5qi2llyzf7gklncflo6gxoozljbm4h3tpnuv4u4ej4ztysv… [1] Link: https://lkml.kernel.org/r/20250922220203.261714-1-shakeel.butt@linux.dev Fixes: 3ac4638a734a ("memcg: make memcg_rstat_updated nmi safe") Signed-off-by: Shakeel Butt <shakeel.butt(a)linux.dev> Acked-by: Michal Hocko <mhocko(a)suse.com> Closes: https://lore.kernel.org/all/20250905061919.439648-1-yepeilin@google.com/ Cc: Alexei Starovoitov <ast(a)kernel.org> Cc: Johannes Weiner <hannes(a)cmpxchg.org> Cc: Kumar Kartikeya Dwivedi <memxor(a)gmail.com> Cc: Muchun Song <muchun.song(a)linux.dev> Cc: Peilin Ye <yepeilin(a)google.com> Cc: Roman Gushchin <roman.gushchin(a)linux.dev> Cc: Tejun Heo <tj(a)kernel.org> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- include/linux/memcontrol.h | 26 +++++++++++++++++++------- mm/memcontrol.c | 7 ++++--- 2 files changed, 23 insertions(+), 10 deletions(-) --- a/include/linux/memcontrol.h~memcg-skip-cgroup_file_notify-if-spinning-is-not-allowed +++ a/include/linux/memcontrol.h @@ -1001,22 +1001,28 @@ static inline void count_memcg_event_mm( count_memcg_events_mm(mm, idx, 1); } -static inline void memcg_memory_event(struct mem_cgroup *memcg, - enum memcg_memory_event event) +static inline void __memcg_memory_event(struct mem_cgroup *memcg, + enum memcg_memory_event event, + bool allow_spinning) { bool swap_event = event == MEMCG_SWAP_HIGH || event == MEMCG_SWAP_MAX || event == MEMCG_SWAP_FAIL; + /* For now only MEMCG_MAX can happen with !allow_spinning context. */ + VM_WARN_ON_ONCE(!allow_spinning && event != MEMCG_MAX); + atomic_long_inc(&memcg->memory_events_local[event]); - if (!swap_event) + if (!swap_event && allow_spinning) cgroup_file_notify(&memcg->events_local_file); do { atomic_long_inc(&memcg->memory_events[event]); - if (swap_event) - cgroup_file_notify(&memcg->swap_events_file); - else - cgroup_file_notify(&memcg->events_file); + if (allow_spinning) { + if (swap_event) + cgroup_file_notify(&memcg->swap_events_file); + else + cgroup_file_notify(&memcg->events_file); + } if (!cgroup_subsys_on_dfl(memory_cgrp_subsys)) break; @@ -1026,6 +1032,12 @@ static inline void memcg_memory_event(st !mem_cgroup_is_root(memcg)); } +static inline void memcg_memory_event(struct mem_cgroup *memcg, + enum memcg_memory_event event) +{ + __memcg_memory_event(memcg, event, true); +} + static inline void memcg_memory_event_mm(struct mm_struct *mm, enum memcg_memory_event event) { --- a/mm/memcontrol.c~memcg-skip-cgroup_file_notify-if-spinning-is-not-allowed +++ a/mm/memcontrol.c @@ -2307,12 +2307,13 @@ static int try_charge_memcg(struct mem_c bool drained = false; bool raised_max_event = false; unsigned long pflags; + bool allow_spinning = gfpflags_allow_spinning(gfp_mask); retry: if (consume_stock(memcg, nr_pages)) return 0; - if (!gfpflags_allow_spinning(gfp_mask)) + if (!allow_spinning) /* Avoid the refill and flush of the older stock */ batch = nr_pages; @@ -2348,7 +2349,7 @@ retry: if (!gfpflags_allow_blocking(gfp_mask)) goto nomem; - memcg_memory_event(mem_over_limit, MEMCG_MAX); + __memcg_memory_event(mem_over_limit, MEMCG_MAX, allow_spinning); raised_max_event = true; psi_memstall_enter(&pflags); @@ -2415,7 +2416,7 @@ force: * a MEMCG_MAX event. */ if (!raised_max_event) - memcg_memory_event(mem_over_limit, MEMCG_MAX); + __memcg_memory_event(mem_over_limit, MEMCG_MAX, allow_spinning); /* * The allocation either can't fail or will lead to more memory _ Patches currently in -mm which might be from shakeel.butt(a)linux.dev are

1 month, 3 weeks

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[PATCH v2 00/19 5.15.y] Backport minmax.h updates from v6.17-rc7

by Eliav Farber

This series backports 19 patches to update minmax.h in the 5.15.y branch, aligning it with v6.17-rc7. The ultimate goal is to synchronize all longterm branches so that they include the full set of minmax.h changes (6.12.y and 6.6.y were already backported by me and are now aligned, 6.1.y is in progress). The key motivation is to bring in commit d03eba99f5bf ("minmax: allow min()/max()/clamp() if the arguments have the same signedness"), which is missing in kernel 5.10.y. In mainline, this change enables min()/max()/clamp() to accept mixed argument types, provided both have the same signedness. Without it, backported patches that use these forms may trigger compiler warnings, which escalate to build failures when -Werror is enabled. Changes in v2: - Fix the order of patches 6 - 10 according to order in mainline branch. - Use same style of [ Upstream commit <HASH> ] in all patches. Andy Shevchenko (1): minmax: deduplicate __unconst_integer_typeof() David Laight (8): minmax: fix indentation of __cmp_once() and __clamp_once() minmax.h: add whitespace around operators and after commas minmax.h: update some comments minmax.h: reduce the #define expansion of min(), max() and clamp() minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp() minmax.h: move all the clamp() definitions after the min/max() ones minmax.h: simplify the variants of clamp() minmax.h: remove some #defines that are only expanded once Herve Codina (1): minmax: Introduce {min,max}_array() Linus Torvalds (8): minmax: avoid overly complicated constant expressions in VM code minmax: add a few more MIN_T/MAX_T users minmax: simplify and clarify min_t()/max_t() implementation minmax: make generic MIN() and MAX() macros available everywhere minmax: don't use max() in situations that want a C constant expression minmax: simplify min()/max()/clamp() implementation minmax: improve macro expansion and type checking minmax: fix up min3() and max3() too Matthew Wilcox (Oracle) (1): minmax: add in_range() macro arch/arm/mm/pageattr.c | 6 +- arch/um/drivers/mconsole_user.c | 2 + arch/x86/mm/pgtable.c | 2 +- drivers/edac/sb_edac.c | 4 +- drivers/edac/skx_common.h | 1 - drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 + .../drm/amd/display/modules/hdcp/hdcp_ddc.c | 2 + .../drm/amd/pm/powerplay/hwmgr/ppevvmath.h | 14 +- .../amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 2 + .../drm/arm/display/include/malidp_utils.h | 2 +- .../display/komeda/komeda_pipeline_state.c | 24 +- drivers/gpu/drm/drm_color_mgmt.c | 2 +- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 6 - drivers/gpu/drm/radeon/evergreen_cs.c | 2 + drivers/hwmon/adt7475.c | 24 +- drivers/input/touchscreen/cyttsp4_core.c | 2 +- drivers/irqchip/irq-sun6i-r.c | 2 +- drivers/md/dm-integrity.c | 4 +- drivers/media/dvb-frontends/stv0367_priv.h | 3 + .../net/ethernet/chelsio/cxgb3/cxgb3_main.c | 18 +- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +- drivers/net/fjes/fjes_main.c | 4 +- drivers/nfc/pn544/i2c.c | 2 - drivers/platform/x86/sony-laptop.c | 1 - drivers/scsi/isci/init.c | 6 +- .../pci/hive_isp_css_include/math_support.h | 5 - drivers/virt/acrn/ioreq.c | 4 +- fs/btrfs/misc.h | 2 - fs/btrfs/tree-checker.c | 2 +- fs/ext2/balloc.c | 2 - fs/ext4/ext4.h | 2 - fs/ufs/util.h | 6 - include/linux/compiler.h | 9 + include/linux/minmax.h | 264 +++++++++++++----- kernel/trace/preemptirq_delay_test.c | 2 - lib/btree.c | 1 - lib/decompress_unlzma.c | 2 + lib/logic_pio.c | 3 - lib/vsprintf.c | 2 +- lib/zstd/zstd_internal.h | 2 - mm/zsmalloc.c | 1 - net/ipv4/proc.c | 2 +- net/ipv6/proc.c | 2 +- net/netfilter/nf_nat_core.c | 6 +- net/tipc/core.h | 2 +- net/tipc/link.c | 10 +- tools/testing/selftests/vm/mremap_test.c | 2 + 47 files changed, 289 insertions(+), 183 deletions(-) -- 2.47.3

1 month, 3 weeks

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[PATCH 6.12.y 6.6.y 6.1.y 5.15.y 5.10.y 5.4.y] ALSA: usb-audio: fix race condition to UAF in snd_usbmidi_free

by Jeongjun Park

From: Jeongjun Park <aha310510(a)gmail.com> [ Upstream commit 9f2c0ac1423d5f267e7f1d1940780fc764b0fee3 ] The previous commit 0718a78f6a9f ("ALSA: usb-audio: Kill timer properly at removal") patched a UAF issue caused by the error timer. However, because the error timer kill added in this patch occurs after the endpoint delete, a race condition to UAF still occurs, albeit rarely. Additionally, since kill-cleanup for urb is also missing, freed memory can be accessed in interrupt context related to urb, which can cause UAF. Therefore, to prevent this, error timer and urb must be killed before freeing the heap memory. Cc: <stable(a)vger.kernel.org> Reported-by: syzbot+f02665daa2abeef4a947(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=f02665daa2abeef4a947 Fixes: 0718a78f6a9f ("ALSA: usb-audio: Kill timer properly at removal") Signed-off-by: Jeongjun Park <aha310510(a)gmail.com> Signed-off-by: Takashi Iwai <tiwai(a)suse.de> --- sound/usb/midi.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/sound/usb/midi.c b/sound/usb/midi.c index c3de2b137435..461e183680da 100644 --- a/sound/usb/midi.c +++ b/sound/usb/midi.c @@ -1522,15 +1522,14 @@ static void snd_usbmidi_free(struct snd_usb_midi *umidi) { int i; + if (!umidi->disconnected) + snd_usbmidi_disconnect(&umidi->list); + for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { struct snd_usb_midi_endpoint *ep = &umidi->endpoints[i]; - if (ep->out) - snd_usbmidi_out_endpoint_delete(ep->out); - if (ep->in) - snd_usbmidi_in_endpoint_delete(ep->in); + kfree(ep->out); } mutex_destroy(&umidi->mutex); - timer_shutdown_sync(&umidi->error_timer); kfree(umidi); } --

1 month, 3 weeks

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[PATCH net] xsk: Fix overflow in descriptor validation@@

by Ilia Gavrilov

The desc->len value can be set up to U32_MAX. If umem tx_metadata_len option is also set, then the value of the expression 'desc->len + pool->tx_metadata_len' can overflow and validation of the incorrect descriptor will be successfully passed. This can lead to a subsequent chain of arithmetic overflows in the xsk_build_skb() function and incorrect sk_buff allocation. Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 341ac980eab9 ("xsk: Support tx_metadata_len") Cc: stable(a)vger.kernel.org Signed-off-by: Ilia Gavrilov <Ilia.Gavrilov(a)infotecs.ru> --- net/xdp/xsk_queue.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/xdp/xsk_queue.h b/net/xdp/xsk_queue.h index f16f390370dc..b206a8839b39 100644 --- a/net/xdp/xsk_queue.h +++ b/net/xdp/xsk_queue.h @@ -144,7 +144,7 @@ static inline bool xp_aligned_validate_desc(struct xsk_buff_pool *pool, struct xdp_desc *desc) { u64 addr = desc->addr - pool->tx_metadata_len; - u64 len = desc->len + pool->tx_metadata_len; + u64 len = (u64)desc->len + pool->tx_metadata_len; u64 offset = addr & (pool->chunk_size - 1); if (!desc->len) @@ -165,7 +165,7 @@ static inline bool xp_unaligned_validate_desc(struct xsk_buff_pool *pool, struct xdp_desc *desc) { u64 addr = xp_unaligned_add_offset_to_addr(desc->addr) - pool->tx_metadata_len; - u64 len = desc->len + pool->tx_metadata_len; + u64 len = (u64)desc->len + pool->tx_metadata_len; if (!desc->len) return false; -- 2.39.5

1 month, 3 weeks

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LR compute WA

by Mario Limonciello (AMD) (kernel.org)

Hi, We have some reports of long compute jobs on APUs hanging the system. This has been root caused and a workaround has been introduced in the mainline kernel. I didn't CC stable on the original W/A because I wanted to make sure we've had enough time to test it didn't have unintended side effects. I feel comfortable with the testing at this point and I think it's worth bringing back to any stable kernels it will apply to 6.12.y and newer. The commit is: 1fb710793ce2619223adffaf981b1ff13cd48f17 Thanks,

1 month, 3 weeks

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[bp@imp.ch: Bug#1111455: linux-image-6.12.41+deb13-amd64: kernel BUG at fs/netfs/read_collect.c:316 netfs: Can't donate prior to front]

by Salvatore Bonaccorso

Hi, A user in Debian reported the following kernel oops when running on 6.12.41 (but apparently as well on older versions, though there were several netfs related similar issues, so including Max Kellermann as well in the recipients) The report from Benoit Panizzon is as follows: > From: Benoit Panizzon <bp(a)imp.ch> > Resent-From: Benoit Panizzon <bp(a)imp.ch> > Reply-To: Benoit Panizzon <bp(a)imp.ch>, 1111455(a)bugs.debian.org > X-Mailer: reportbug 13.2.0 > Date: Mon, 18 Aug 2025 10:24:32 +0200 > To: Debian Bug Tracking System <submit(a)bugs.debian.org> > Subject: Bug#1111455: linux-image-6.12.41+deb13-amd64: kernel BUG at fs/netfs/read_collect.c:316 netfs: Can't donate > prior to front > Delivered-To: lists-debian-kernel(a)bendel.debian.org > Delivered-To: submit(a)bugs.debian.org > Message-ID: <175550547264.3745.5845128440223069497.reportbug(a)go.imp.ch> > > Package: src:linux > Version: 6.12.41-1 > Severity: grave > Justification: renders package unusable > X-Debbugs-Cc: debian-amd64(a)lists.debian.org > User: debian-amd64(a)lists.debian.org > Usertags: amd64 > > Dear Maintainer, > > Updated my workstation from Bookworm to Trixie. /home on NFS > > Applications accessing data on NFS shares become unresponsive one after the other after a couple of minutes. > > Especially affected: > * Claws-Mail > * Chromium > > Suspected cachefsd being the culpit and disabled - issue persists. > > It looks like an invalid opcode is being used. Fairly recent CPU in use: > > vendor_id : AuthenticAMD > cpu family : 25 > model : 80 > model name : AMD Ryzen 7 PRO 5750GE with Radeon Graphics > stepping : 0 > microcode : 0xa500011 > > Google found reports of others affected with similar kernel versions mostly when accessing SMB shares. > > [Mo Aug 18 10:11:19 2025] netfs: Can't donate prior to front > [Mo Aug 18 10:11:19 2025] R=00001e07[4] s=6000-7fff 0/2000/2000 > [Mo Aug 18 10:11:19 2025] folio: 4000-7fff > [Mo Aug 18 10:11:19 2025] donated: prev=0 next=0 > [Mo Aug 18 10:11:19 2025] s=6000 av=2000 part=2000 > [Mo Aug 18 10:11:19 2025] ------------[ cut here ]------------ > [Mo Aug 18 10:11:19 2025] kernel BUG at fs/netfs/read_collect.c:316! > [Mo Aug 18 10:11:19 2025] Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI > [Mo Aug 18 10:11:19 2025] CPU: 5 UID: 0 PID: 115 Comm: kworker/u64:1 Not tainted 6.12.41+deb13-amd64 #1 Debian 6.12.41-1 > [Mo Aug 18 10:11:19 2025] Hardware name: LENOVO 11JN000JGE/32E4, BIOS M47KT26A 11/23/2022 > [Mo Aug 18 10:11:19 2025] Workqueue: nfsiod rpc_async_release [sunrpc] > [Mo Aug 18 10:11:19 2025] RIP: 0010:netfs_consume_read_data.isra.0+0xb79/0xb80 [netfs] > [Mo Aug 18 10:11:19 2025] Code: 48 89 ea 31 f6 48 c7 c7 96 95 6f c2 e8 d0 8d a2 e1 48 8b 4c 24 10 4c 89 fe 48 8b 54 24 20 48 c7 c7 b2 95 6f c2 e8 b7 8d a2 e1 <0f> 0b 90 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 > [Mo Aug 18 10:11:19 2025] RSP: 0018:ffffb4234057bd58 EFLAGS: 00010246 > [Mo Aug 18 10:11:19 2025] RAX: 0000000000000018 RBX: ffff9aed62651ec0 RCX: 0000000000000027 > [Mo Aug 18 10:11:19 2025] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff9af04e4a1740 > [Mo Aug 18 10:11:19 2025] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffb4234057bbe8 > [Mo Aug 18 10:11:19 2025] R10: ffffffffa50b43a8 R11: 0000000000000003 R12: ffff9aed6c9081e8 > [Mo Aug 18 10:11:19 2025] R13: 0000000000004000 R14: ffff9aed6c9081e8 R15: 0000000000006000 > [Mo Aug 18 10:11:19 2025] FS: 0000000000000000(0000) GS:ffff9af04e480000(0000) knlGS:0000000000000000 > [Mo Aug 18 10:11:19 2025] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [Mo Aug 18 10:11:19 2025] CR2: 00003d3407849020 CR3: 00000002f1822000 CR4: 0000000000f50ef0 > [Mo Aug 18 10:11:19 2025] PKRU: 55555554 > [Mo Aug 18 10:11:19 2025] Call Trace: > [Mo Aug 18 10:11:19 2025] <TASK> > [Mo Aug 18 10:11:19 2025] netfs_read_subreq_terminated+0x2ab/0x3e0 [netfs] > [Mo Aug 18 10:11:19 2025] nfs_netfs_read_completion+0x9c/0xc0 [nfs] > [Mo Aug 18 10:11:19 2025] nfs_read_completion+0xf6/0x130 [nfs] > [Mo Aug 18 10:11:19 2025] rpc_free_task+0x39/0x60 [sunrpc] > [Mo Aug 18 10:11:19 2025] rpc_async_release+0x2f/0x40 [sunrpc] > [Mo Aug 18 10:11:19 2025] process_one_work+0x177/0x330 > [Mo Aug 18 10:11:19 2025] worker_thread+0x251/0x390 > [Mo Aug 18 10:11:19 2025] ? __pfx_worker_thread+0x10/0x10 > [Mo Aug 18 10:11:19 2025] kthread+0xd2/0x100 > [Mo Aug 18 10:11:19 2025] ? __pfx_kthread+0x10/0x10 > [Mo Aug 18 10:11:19 2025] ret_from_fork+0x34/0x50 > [Mo Aug 18 10:11:19 2025] ? __pfx_kthread+0x10/0x10 > [Mo Aug 18 10:11:19 2025] ret_from_fork_asm+0x1a/0x30 > [Mo Aug 18 10:11:19 2025] </TASK> > [Mo Aug 18 10:11:19 2025] Modules linked in: nfsv3 rpcsec_gss_krb5 nfsv4 dns_resolver nfs netfs nft_chain_nat xt_MASQUERADE nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables libcrc32c wireguard libchacha20poly1305 chacha_x86_64 poly1305_x86_64 curve25519_x86_64 libcurve25519_generic libchacha vxlan ip6_udp_tunnel udp_tunnel bridge stp llc btusb btrtl btintel btbcm btmtk bluetooth joydev qrtr nfsd auth_rpcgss binfmt_misc nfs_acl lockd grace nls_ascii nls_cp437 sunrpc vfat fat amd_atl intel_rapl_msr intel_rapl_common rtw88_8822ce rtw88_8822c edac_mce_amd rtw88_pci snd_sof_amd_rembrandt snd_sof_amd_acp rtw88_core kvm_amd snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_hda_codec_realtek mac80211 kvm snd_hda_codec_generic snd_sof_utils snd_hda_scodec_component snd_soc_core snd_hda_codec_hdmi snd_hda_intel snd_compress snd_intel_dspcfg libarc4 snd_pcm_dmaengine irqbypass snd_intel_sdw_acpi snd_pci_ps crct10dif_pclmul snd_hda_codec ghash_clmulni_intel snd_rpl_pci_acp6x cfg80211 snd_hda_core sha512_ssse3 snd_acp_pci > [Mo Aug 18 10:11:19 2025] sha256_ssse3 snd_acp_legacy_common sha1_ssse3 snd_hwdep snd_pci_acp6x aesni_intel snd_pcm gf128mul snd_pci_acp5x crypto_simd think_lmi snd_timer snd_rn_pci_acp3x cryptd firmware_attributes_class snd_acp_config wmi_bmof snd snd_soc_acpi ee1004 rapl snd_pci_acp3x pcspkr ccp k10temp rfkill soundcore evdev parport_pc ppdev lp parport configfs efi_pstore nfnetlink efivarfs ip_tables x_tables autofs4 ext4 mbcache jbd2 crc32c_generic hid_plantronics hid_generic usbhid hid amdgpu dm_mod amdxcp drm_exec gpu_sched drm_buddy i2c_algo_bit drm_suballoc_helper drm_display_helper cec rc_core drm_ttm_helper xhci_pci ttm xhci_hcd drm_kms_helper drm r8169 nvme usbcore realtek sp5100_tco nvme_core mdio_devres watchdog libphy crc32_pclmul i2c_piix4 video crc32c_intel usb_common nvme_auth i2c_smbus crc16 wmi button > [Mo Aug 18 10:11:19 2025] ---[ end trace 0000000000000000 ]--- Any ideas here? Benoit can you please es well test the current 6.16.1 ideally to verify if the problem persists there as well? Regards, Salvatore

1 month, 3 weeks

2
5
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[PATCH] vfs: Don't leak disconnected dentries on umount

by Jan Kara

When user calls open_by_handle_at() on some inode that is not cached, we will create disconnected dentry for it. If such dentry is a directory, exportfs_decode_fh_raw() will then try to connect this dentry to the dentry tree through reconnect_path(). It may happen for various reasons (such as corrupted fs or race with rename) that the call to lookup_one_unlocked() in reconnect_one() will fail to find the dentry we are trying to reconnect and instead create a new dentry under the parent. Now this dentry will not be marked as disconnected although the parent still may well be disconnected (at least in case this inconsistency happened because the fs is corrupted and .. doesn't point to the real parent directory). This creates inconsistency in disconnected flags but AFAICS it was mostly harmless. At least until commit f1ee616214cb ("VFS: don't keep disconnected dentries on d_anon") which removed adding of most disconnected dentries to sb->s_anon list. Thus after this commit cleanup of disconnected dentries implicitely relies on the fact that dput() will immediately reclaim such dentries. However when some leaf dentry isn't marked as disconnected, as in the scenario described above, the reclaim doesn't happen and the dentries are "leaked". Memory reclaim can eventually reclaim them but otherwise they stay in memory and if umount comes first, we hit infamous "Busy inodes after unmount" bug. Make sure all dentries created under a disconnected parent are marked as disconnected as well. Reported-by: syzbot+1d79ebe5383fc016cf07(a)syzkaller.appspotmail.com Fixes: f1ee616214cb ("VFS: don't keep disconnected dentries on d_anon") CC: stable(a)vger.kernel.org Signed-off-by: Jan Kara <jack(a)suse.cz> --- fs/dcache.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/dcache.c b/fs/dcache.c index 65cc11939654..3ec21f9cedba 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -2557,6 +2557,8 @@ struct dentry *d_alloc_parallel(struct dentry *parent, spin_lock(&parent->d_lock); new->d_parent = dget_dlock(parent); hlist_add_head(&new->d_sib, &parent->d_children); + if (parent->d_flags & DCACHE_DISCONNECTED) + new->d_flags |= DCACHE_DISCONNECTED; spin_unlock(&parent->d_lock); retry: -- 2.51.0

1 month, 3 weeks

3
3
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[PATCH net v3 1/1] net: usb: asix: hold PM usage ref to avoid PM/MDIO + RTNL deadlock

by Oleksij Rempel

Prevent USB runtime PM (autosuspend) for AX88772* in bind. usbnet enables runtime PM (autosuspend) by default, so disabling it via the usb_driver flag is ineffective. On AX88772B, autosuspend shows no measurable power saving with current driver (no link partner, admin up/down). The ~0.453 W -> ~0.248 W drop on v6.1 comes from phylib powering the PHY off on admin-down, not from USB autosuspend. The real hazard is that with runtime PM enabled, ndo_open() (under RTNL) may synchronously trigger autoresume (usb_autopm_get_interface()) into asix_resume() while the USB PM lock is held. Resume paths then invoke phylink/phylib and MDIO, which also expect RTNL, leading to possible deadlocks or PM lock vs MDIO wake issues. To avoid this, keep the device runtime-PM active by taking a usage reference in ax88772_bind() and dropping it in unbind(). A non-zero PM usage count blocks runtime suspend regardless of userspace policy (.../power/control - pm_runtime_allow/forbid), making this approach robust against sysfs overrides. Holding a runtime-PM usage ref does not affect system-wide suspend; system sleep/resume callbacks continue to run as before. Fixes: 4a2c7217cd5a ("net: usb: asix: ax88772: manage PHY PM from MAC") Reported-by: Hubert Wiśniewski <hubert.wisniewski.25632(a)gmail.com> Closes: https://lore.kernel.org/all/DCGHG5UJT9G3.2K1GHFZ3H87T0@gmail.com Tested-by: Hubert Wiśniewski <hubert.wisniewski.25632(a)gmail.com> Reported-by: Marek Szyprowski <m.szyprowski(a)samsung.com> Closes: https://lore.kernel.org/all/b5ea8296-f981-445d-a09a-2f389d7f6fdd@samsung.com Cc: stable(a)vger.kernel.org Signed-off-by: Oleksij Rempel <o.rempel(a)pengutronix.de> --- changes v3 - update comments and commit message changes v2: - Switch from pm_runtime_forbid()/allow() to pm_runtime_get_noresume()/put() as suggested by Alan Stern, to block autosuspend robustly. - Reword commit message to clarify the actual deadlock condition (autoresume under RTNL) as pointed out by Oliver Neukum. - Keep explanation in commit message, shorten in-code comment. Link to the measurement results: https://lore.kernel.org/all/aMkPMa650kfKfmF4@pengutronix.de/ --- drivers/net/usb/asix_devices.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c index 792ddda1ad49..85bd5d845409 100644 --- a/drivers/net/usb/asix_devices.c +++ b/drivers/net/usb/asix_devices.c @@ -625,6 +625,21 @@ static void ax88772_suspend(struct usbnet *dev) asix_read_medium_status(dev, 1)); } +/* Notes on PM callbacks and locking context: + * + * - asix_suspend()/asix_resume() are invoked for both runtime PM and + * system-wide suspend/resume. For struct usb_driver the ->resume() + * callback does not receive pm_message_t, so the resume type cannot + * be distinguished here. + * + * - The MAC driver must hold RTNL when calling phylink interfaces such as + * phylink_suspend()/resume(). Those calls will also perform MDIO I/O. + * + * - Taking RTNL and doing MDIO from a runtime-PM resume callback (while + * the USB PM lock is held) is fragile. Since autosuspend brings no + * measurable power saving here, we block it by holding a PM usage + * reference in ax88772_bind(). + */ static int asix_suspend(struct usb_interface *intf, pm_message_t message) { struct usbnet *dev = usb_get_intfdata(intf); @@ -919,6 +934,13 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) if (ret) goto initphy_err; + /* Keep this interface runtime-PM active by taking a usage ref. + * Prevents runtime suspend while bound and avoids resume paths + * that could deadlock (autoresume under RTNL while USB PM lock + * is held, phylink/MDIO wants RTNL). + */ + pm_runtime_get_noresume(&intf->dev); + return 0; initphy_err: @@ -948,6 +970,8 @@ static void ax88772_unbind(struct usbnet *dev, struct usb_interface *intf) phylink_destroy(priv->phylink); ax88772_mdio_unregister(priv); asix_rx_fixup_common_free(dev->driver_priv); + /* Drop the PM usage ref taken in bind() */ + pm_runtime_put(&intf->dev); } static void ax88178_unbind(struct usbnet *dev, struct usb_interface *intf) @@ -1600,6 +1624,11 @@ static struct usb_driver asix_driver = { .resume = asix_resume, .reset_resume = asix_resume, .disconnect = usbnet_disconnect, + /* usbnet enables autosuspend by default (supports_autosuspend=1). + * We keep runtime-PM active for AX88772* by taking a PM usage + * reference in ax88772_bind() (pm_runtime_get_noresume()) and + * dropping it in unbind(), which effectively blocks autosuspend. + */ .supports_autosuspend = 1, .disable_hub_initiated_lpm = 1, }; -- 2.47.3

1 month, 3 weeks

2
1
0 0

[PATCH] ALSA: hda: Fix missing pointer check in hda_component_manager_init function

by Denis Arefev

The __component_match_add function may assign the 'matchptr' pointer the value ERR_PTR(-ENOMEM), which will subsequently be dereferenced. The call stack leading to the error looks like this: hda_component_manager_init |-> component_match_add |-> component_match_add_release |-> __component_match_add ( ... ,**matchptr, ... ) |-> *matchptr = ERR_PTR(-ENOMEM); // assign |-> component_master_add_with_match( ... match) |-> component_match_realloc(match, match->num); // dereference Add IS_ERR() check to prevent the crash. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: fd895a74dc1d ("ALSA: hda: realtek: Move hda_component implementation to module") Cc: stable(a)vger.kernel.org Signed-off-by: Denis Arefev <arefev(a)swemel.ru> --- sound/hda/codecs/side-codecs/hda_component.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/hda/codecs/side-codecs/hda_component.c b/sound/hda/codecs/side-codecs/hda_component.c index 71860e2d6377..84ddbab660e3 100644 --- a/sound/hda/codecs/side-codecs/hda_component.c +++ b/sound/hda/codecs/side-codecs/hda_component.c @@ -181,6 +181,8 @@ int hda_component_manager_init(struct hda_codec *cdc, sm->match_str = match_str; sm->index = i; component_match_add(dev, &match, hda_comp_match_dev_name, sm); + if (IS_ERR(match)) + return PTR_ERR(match); } ret = component_master_add_with_match(dev, ops, match); -- 2.43.0

1 month, 3 weeks

3
2
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[PATCH v2 03/14] iommu/exynos: fix device leak on of_xlate()

by Johan Hovold

Make sure to drop the reference taken to the iommu platform device when looking up its driver data during of_xlate(). Note that commit 1a26044954a6 ("iommu/exynos: add missing put_device() call in exynos_iommu_of_xlate()") fixed the leak in a couple of error paths, but the reference is still leaking on success. Fixes: aa759fd376fb ("iommu/exynos: Add callback for initializing devices from device tree") Cc: stable(a)vger.kernel.org # 4.2: 1a26044954a6 Cc: Marek Szyprowski <m.szyprowski(a)samsung.com> Cc: Yu Kuai <yukuai3(a)huawei.com> Acked-by: Robin Murphy <robin.murphy(a)arm.com> Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/iommu/exynos-iommu.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index b6edd178fe25..ce9e935cb84c 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -1446,17 +1446,14 @@ static int exynos_iommu_of_xlate(struct device *dev, return -ENODEV; data = platform_get_drvdata(sysmmu); - if (!data) { - put_device(&sysmmu->dev); + put_device(&sysmmu->dev); + if (!data) return -ENODEV; - } if (!owner) { owner = kzalloc(sizeof(*owner), GFP_KERNEL); - if (!owner) { - put_device(&sysmmu->dev); + if (!owner) return -ENOMEM; - } INIT_LIST_HEAD(&owner->controllers); mutex_init(&owner->rpm_lock); -- 2.49.1

1 month, 3 weeks

2
1
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[PATCH v2 13/14] iommu/sun50i: fix device leak on of_xlate()

by Johan Hovold

Make sure to drop the reference taken to the iommu platform device when looking up its driver data during of_xlate(). Fixes: 4100b8c229b3 ("iommu: Add Allwinner H6 IOMMU driver") Cc: stable(a)vger.kernel.org # 5.8 Cc: Maxime Ripard <mripard(a)kernel.org> Acked-by: Robin Murphy <robin.murphy(a)arm.com> Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/iommu/sun50i-iommu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iommu/sun50i-iommu.c b/drivers/iommu/sun50i-iommu.c index de10b569d9a9..6306570d57db 100644 --- a/drivers/iommu/sun50i-iommu.c +++ b/drivers/iommu/sun50i-iommu.c @@ -839,6 +839,8 @@ static int sun50i_iommu_of_xlate(struct device *dev, dev_iommu_priv_set(dev, platform_get_drvdata(iommu_pdev)); + put_device(&iommu_pdev->dev); + return iommu_fwspec_add_ids(dev, &id, 1); } -- 2.49.1

1 month, 3 weeks

1
0
0 0

[PATCH v2 11/14] iommu/omap: fix device leaks on probe_device()

by Johan Hovold

Make sure to drop the references taken to the iommu platform devices when looking up their driver data during probe_device(). Note that the arch data device pointer added by commit 604629bcb505 ("iommu/omap: add support for late attachment of iommu devices") has never been used. Remove it to underline that the references are not needed. Fixes: 9d5018deec86 ("iommu/omap: Add support to program multiple iommus") Fixes: 7d6827748d54 ("iommu/omap: Fix iommu archdata name for DT-based devices") Cc: stable(a)vger.kernel.org # 3.18 Cc: Suman Anna <s-anna(a)ti.com> Acked-by: Robin Murphy <robin.murphy(a)arm.com> Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/iommu/omap-iommu.c | 2 +- drivers/iommu/omap-iommu.h | 2 -- 2 files changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index 6fb93927bdb9..b87ce129fb1f 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -1675,6 +1675,7 @@ static struct iommu_device *omap_iommu_probe_device(struct device *dev) } oiommu = platform_get_drvdata(pdev); + put_device(&pdev->dev); if (!oiommu) { of_node_put(np); kfree(arch_data); @@ -1682,7 +1683,6 @@ static struct iommu_device *omap_iommu_probe_device(struct device *dev) } tmp->iommu_dev = oiommu; - tmp->dev = &pdev->dev; of_node_put(np); } diff --git a/drivers/iommu/omap-iommu.h b/drivers/iommu/omap-iommu.h index 27697109ec79..50b39be61abc 100644 --- a/drivers/iommu/omap-iommu.h +++ b/drivers/iommu/omap-iommu.h @@ -88,7 +88,6 @@ struct omap_iommu { /** * struct omap_iommu_arch_data - omap iommu private data * @iommu_dev: handle of the OMAP iommu device - * @dev: handle of the iommu device * * This is an omap iommu private data object, which binds an iommu user * to its iommu device. This object should be placed at the iommu user's @@ -97,7 +96,6 @@ struct omap_iommu { */ struct omap_iommu_arch_data { struct omap_iommu *iommu_dev; - struct device *dev; }; struct cr_regs { -- 2.49.1

1 month, 3 weeks

1
0
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[PATCH v2 09/14] iommu/mediatek-v1: fix device leaks on probe()

by Johan Hovold

Make sure to drop the references taken to the larb devices during probe on probe failure (e.g. probe deferral) and on driver unbind. Fixes: b17336c55d89 ("iommu/mediatek: add support for mtk iommu generation one HW") Cc: stable(a)vger.kernel.org # 4.8 Cc: Honghui Zhang <honghui.zhang(a)mediatek.com> Acked-by: Robin Murphy <robin.murphy(a)arm.com> Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/iommu/mtk_iommu_v1.c | 23 ++++++++++++++++++----- 1 file changed, 18 insertions(+), 5 deletions(-) diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c index de9153c0a82f..44b965a2db92 100644 --- a/drivers/iommu/mtk_iommu_v1.c +++ b/drivers/iommu/mtk_iommu_v1.c @@ -648,8 +648,10 @@ static int mtk_iommu_v1_probe(struct platform_device *pdev) struct platform_device *plarbdev; larbnode = of_parse_phandle(dev->of_node, "mediatek,larbs", i); - if (!larbnode) - return -EINVAL; + if (!larbnode) { + ret = -EINVAL; + goto out_put_larbs; + } if (!of_device_is_available(larbnode)) { of_node_put(larbnode); @@ -659,11 +661,14 @@ static int mtk_iommu_v1_probe(struct platform_device *pdev) plarbdev = of_find_device_by_node(larbnode); if (!plarbdev) { of_node_put(larbnode); - return -ENODEV; + ret = -ENODEV; + goto out_put_larbs; } if (!plarbdev->dev.driver) { of_node_put(larbnode); - return -EPROBE_DEFER; + put_device(&plarbdev->dev); + ret = -EPROBE_DEFER; + goto out_put_larbs; } data->larb_imu[i].dev = &plarbdev->dev; @@ -675,7 +680,7 @@ static int mtk_iommu_v1_probe(struct platform_device *pdev) ret = mtk_iommu_v1_hw_init(data); if (ret) - return ret; + goto out_put_larbs; ret = iommu_device_sysfs_add(&data->iommu, &pdev->dev, NULL, dev_name(&pdev->dev)); @@ -697,12 +702,17 @@ static int mtk_iommu_v1_probe(struct platform_device *pdev) iommu_device_sysfs_remove(&data->iommu); out_clk_unprepare: clk_disable_unprepare(data->bclk); +out_put_larbs: + for (i = 0; i < MTK_LARB_NR_MAX; i++) + put_device(data->larb_imu[i].dev); + return ret; } static void mtk_iommu_v1_remove(struct platform_device *pdev) { struct mtk_iommu_v1_data *data = platform_get_drvdata(pdev); + int i; iommu_device_sysfs_remove(&data->iommu); iommu_device_unregister(&data->iommu); @@ -710,6 +720,9 @@ static void mtk_iommu_v1_remove(struct platform_device *pdev) clk_disable_unprepare(data->bclk); devm_free_irq(&pdev->dev, data->irq, data); component_master_del(&pdev->dev, &mtk_iommu_v1_com_ops); + + for (i = 0; i < MTK_LARB_NR_MAX; i++) + put_device(data->larb_imu[i].dev); } static int __maybe_unused mtk_iommu_v1_suspend(struct device *dev) -- 2.49.1

1 month, 3 weeks

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[PATCH v2 04/14] iommu/ipmmu-vmsa: fix device leak on of_xlate()

by Johan Hovold

Make sure to drop the reference taken to the iommu platform device when looking up its driver data during of_xlate(). Fixes: 7b2d59611fef ("iommu/ipmmu-vmsa: Replace local utlb code with fwspec ids") Cc: stable(a)vger.kernel.org # 4.14 Cc: Magnus Damm <damm+renesas(a)opensource.se> Acked-by: Robin Murphy <robin.murphy(a)arm.com> Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/iommu/ipmmu-vmsa.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index ffa892f65714..02a2a55ffa0a 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -720,6 +720,8 @@ static int ipmmu_init_platform_device(struct device *dev, dev_iommu_priv_set(dev, platform_get_drvdata(ipmmu_pdev)); + put_device(&ipmmu_pdev->dev); + return 0; } -- 2.49.1

1 month, 3 weeks

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[PATCH v2 02/14] iommu/qcom: fix device leak on of_xlate()

by Johan Hovold

Make sure to drop the reference taken to the iommu platform device when looking up its driver data during of_xlate(). Note that commit e2eae09939a8 ("iommu/qcom: add missing put_device() call in qcom_iommu_of_xlate()") fixed the leak in a couple of error paths, but the reference is still leaking on success and late failures. Fixes: 0ae349a0f33f ("iommu/qcom: Add qcom_iommu") Cc: stable(a)vger.kernel.org # 4.14: e2eae09939a8 Cc: Rob Clark <robin.clark(a)oss.qualcomm.com> Cc: Yu Kuai <yukuai3(a)huawei.com> Acked-by: Robin Murphy <robin.murphy(a)arm.com> Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/iommu/arm/arm-smmu/qcom_iommu.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/iommu/arm/arm-smmu/qcom_iommu.c b/drivers/iommu/arm/arm-smmu/qcom_iommu.c index c5be95e56031..9c1166a3af6c 100644 --- a/drivers/iommu/arm/arm-smmu/qcom_iommu.c +++ b/drivers/iommu/arm/arm-smmu/qcom_iommu.c @@ -565,14 +565,14 @@ static int qcom_iommu_of_xlate(struct device *dev, qcom_iommu = platform_get_drvdata(iommu_pdev); + put_device(&iommu_pdev->dev); + /* make sure the asid specified in dt is valid, so we don't have * to sanity check this elsewhere: */ if (WARN_ON(asid > qcom_iommu->max_asid) || - WARN_ON(qcom_iommu->ctxs[asid] == NULL)) { - put_device(&iommu_pdev->dev); + WARN_ON(qcom_iommu->ctxs[asid] == NULL)) return -EINVAL; - } if (!dev_iommu_priv_get(dev)) { dev_iommu_priv_set(dev, qcom_iommu); @@ -581,10 +581,8 @@ static int qcom_iommu_of_xlate(struct device *dev, * multiple different iommu devices. Multiple context * banks are ok, but multiple devices are not: */ - if (WARN_ON(qcom_iommu != dev_iommu_priv_get(dev))) { - put_device(&iommu_pdev->dev); + if (WARN_ON(qcom_iommu != dev_iommu_priv_get(dev))) return -EINVAL; - } } return iommu_fwspec_add_ids(dev, &asid, 1); -- 2.49.1

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[PATCH v2 01/14] iommu/apple-dart: fix device leak on of_xlate()

by Johan Hovold

Make sure to drop the reference taken to the iommu platform device when looking up its driver data during of_xlate(). Fixes: 46d1fb072e76 ("iommu/dart: Add DART iommu driver") Cc: stable(a)vger.kernel.org # 5.15 Cc: Sven Peter <sven(a)kernel.org> Acked-by: Robin Murphy <robin.murphy(a)arm.com> Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/iommu/apple-dart.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iommu/apple-dart.c b/drivers/iommu/apple-dart.c index 190f28d76615..1aa7c10262a8 100644 --- a/drivers/iommu/apple-dart.c +++ b/drivers/iommu/apple-dart.c @@ -790,6 +790,8 @@ static int apple_dart_of_xlate(struct device *dev, struct apple_dart *cfg_dart; int i, sid; + put_device(&iommu_pdev->dev); + if (args->args_count != 1) return -EINVAL; sid = args->args[0]; -- 2.49.1

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Inquiry from Varelt SRL Company Sales Order

by VARELT IMPORT SRL

1 month, 3 weeks

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FAILED: patch "[PATCH] bus: mhi: host: Detect events pointing to unexpected TREs" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x 5bd398e20f0833ae8a1267d4f343591a2dd20185 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025082100-snowiness-profanity-df3a@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 5bd398e20f0833ae8a1267d4f343591a2dd20185 Mon Sep 17 00:00:00 2001 From: Youssef Samir <quic_yabdulra(a)quicinc.com> Date: Mon, 14 Jul 2025 18:30:39 +0200 Subject: [PATCH] bus: mhi: host: Detect events pointing to unexpected TREs When a remote device sends a completion event to the host, it contains a pointer to the consumed TRE. The host uses this pointer to process all of the TREs between it and the host's local copy of the ring's read pointer. This works when processing completion for chained transactions, but can lead to nasty results if the device sends an event for a single-element transaction with a read pointer that is multiple elements ahead of the host's read pointer. For instance, if the host accesses an event ring while the device is updating it, the pointer inside of the event might still point to an old TRE. If the host uses the channel's xfer_cb() to directly free the buffer pointed to by the TRE, the buffer will be double-freed. This behavior was observed on an ep that used upstream EP stack without 'commit 6f18d174b73d ("bus: mhi: ep: Update read pointer only after buffer is written")'. Where the device updated the events ring pointer before updating the event contents, so it left a window where the host was able to access the stale data the event pointed to, before the device had the chance to update them. The usual pattern was that the host received an event pointing to a TRE that is not immediately after the last processed one, so it got treated as if it was a chained transaction, processing all of the TREs in between the two read pointers. This commit aims to harden the host by ensuring transactions where the event points to a TRE that isn't local_rp + 1 are chained. Fixes: 1d3173a3bae7 ("bus: mhi: core: Add support for processing events from client device") Signed-off-by: Youssef Samir <quic_yabdulra(a)quicinc.com> [mani: added stable tag and reworded commit message] Signed-off-by: Manivannan Sadhasivam <mani(a)kernel.org> Reviewed-by: Jeff Hugo <jeff.hugo(a)oss.qualcomm.com> Cc: stable(a)vger.kernel.org Link: https://patch.msgid.link/20250714163039.3438985-1-quic_yabdulra@quicinc.com diff --git a/drivers/bus/mhi/host/main.c b/drivers/bus/mhi/host/main.c index 3041ee6747e3..52bef663e182 100644 --- a/drivers/bus/mhi/host/main.c +++ b/drivers/bus/mhi/host/main.c @@ -602,7 +602,7 @@ static int parse_xfer_event(struct mhi_controller *mhi_cntrl, { dma_addr_t ptr = MHI_TRE_GET_EV_PTR(event); struct mhi_ring_element *local_rp, *ev_tre; - void *dev_rp; + void *dev_rp, *next_rp; struct mhi_buf_info *buf_info; u16 xfer_len; @@ -621,6 +621,16 @@ static int parse_xfer_event(struct mhi_controller *mhi_cntrl, result.dir = mhi_chan->dir; local_rp = tre_ring->rp; + + next_rp = local_rp + 1; + if (next_rp >= tre_ring->base + tre_ring->len) + next_rp = tre_ring->base; + if (dev_rp != next_rp && !MHI_TRE_DATA_GET_CHAIN(local_rp)) { + dev_err(&mhi_cntrl->mhi_dev->dev, + "Event element points to an unexpected TRE\n"); + break; + } + while (local_rp != dev_rp) { buf_info = buf_ring->rp; /* If it's the last TRE, get length from the event */

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[STATUS] stable/linux-6.12.y - a9152eb181adaac576e8ac1ab79989881e0f301b

by KernelCI bot

Hello, Status summary for stable/linux-6.12.y Dashboard: https://d.kernelci.org/c/stable/linux-6.12.y/a9152eb181adaac576e8ac1ab79989… giturl: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git branch: linux-6.12.y commit hash: a9152eb181adaac576e8ac1ab79989881e0f301b origin: maestro test start time: 2025-10-06 09:30:07.031000+00:00 Builds: 44 ✅ 1 ❌ 0 ⚠️ Boots: 172 ✅ 4 ❌ 5 ⚠️ Tests: 10782 ✅ 945 ❌ 2510 ⚠️ ### POSSIBLE REGRESSIONS Hardware: imx6q-udoo > Config: multi_v7_defconfig - Architecture/compiler: arm/gcc-12 - kselftest.dt last run: https://d.kernelci.org/test/maestro:68e399ac9512ca5274538de3 history: > ✅ > ❌ ### FIXED REGRESSIONS No fixed regressions observed. ### UNSTABLE TESTS No unstable tests observed. This branch has 1 pre-existing build issues. See details in the dashboard. Sent every day if there were changes in the past 24 hours. Legend: ✅ PASS ❌ FAIL ⚠️ INCONCLUSIVE -- This is an experimental report format. Please send feedback in! Talk to us at kernelci(a)lists.linux.dev Made with love by the KernelCI team - https://kernelci.org

1 month, 3 weeks

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[PATCH] scsi: fix shift out-of-bounds in sg_build_indirect The num variable is set to 0. The variable num gets its value from scatter_elem_sz. However the minimum value of scatter_elem_sz is PAGE_SHIFT. So setting num to PAGE_SIZE when num < PAGE_SIZE.

by Kshitij Paranjape

Cc: <stable(a)vger.kernel.org> Reported-by: syzbot+270f1c719ee7baab9941(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=270f1c719ee7baab9941 Signed-off-by: Kshitij Paranjape <kshitijvparanjape(a)gmail.com> --- drivers/scsi/sg.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index effb7e768165..9ae41bb256d7 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -1888,6 +1888,7 @@ sg_build_indirect(Sg_scatter_hold * schp, Sg_fd * sfp, int buff_size) if (num < PAGE_SIZE) { scatter_elem_sz = PAGE_SIZE; scatter_elem_sz_prev = PAGE_SIZE; + num = scatter_elem_sz; } else scatter_elem_sz_prev = num; } -- 2.43.0

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[PATCH net 0/8] Intel Wired LAN Driver Updates 2025-10-01 (idpf, ixgbe, ixgbevf)

by Jacob Keller

For idpf: Milena fixes a memory leak in the idpf reset logic when the driver resets with an outstanding Tx timestamp. Emil fixes a race condition in idpf_vport_stop() by using test_and_clear_bit() to ensure we execute idpf_vport_stop() once. For ixgbe and ixgbevf: Jedrzej fixes an issue with reporting link speed on E610 VFs. Jedrzej also fixes the VF mailbox API incompatibilities caused by the confusion with API v1.4, v1.5, and v1.6. The v1.4 API introduced IPSEC offload, but this was only supported on Linux hosts. The v1.5 API introduced a new mailbox API which is necessary to resolve issues on ESX hosts. The v1.6 API introduced a new link management API for E610. Jedrzej introduces a new v1.7 API with a feature negotiation which enables properly checking if features such as IPSEC or the ESX mailbox APIs are supported. This resolves issues with compatibility on different hosts, and aligns the API across hosts instead of having Linux require custom mailbox API versions for IPSEC offload. Koichiro fixes a KASAN use-after-free bug in ixgbe_remove(). Signed-off-by: Jacob Keller <jacob.e.keller(a)intel.com> --- Emil Tantilov (2): idpf: convert vport state to bitmap idpf: fix possible race in idpf_vport_stop() Jedrzej Jagielski (4): ixgbevf: fix getting link speed data for E610 devices ixgbe: handle IXGBE_VF_GET_PF_LINK_STATE mailbox operation ixgbevf: fix mailbox API compatibility by negotiating supported features ixgbe: handle IXGBE_VF_FEATURES_NEGOTIATE mbox cmd Koichiro Den (1): ixgbe: fix too early devlink_free() in ixgbe_remove() Milena Olech (1): idpf: cleanup remaining SKBs in PTP flows drivers/net/ethernet/intel/idpf/idpf.h | 12 +- drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h | 15 ++ drivers/net/ethernet/intel/ixgbevf/defines.h | 1 + drivers/net/ethernet/intel/ixgbevf/ixgbevf.h | 7 + drivers/net/ethernet/intel/ixgbevf/mbx.h | 8 + drivers/net/ethernet/intel/ixgbevf/vf.h | 1 + drivers/net/ethernet/intel/idpf/idpf_ethtool.c | 10 +- drivers/net/ethernet/intel/idpf/idpf_lib.c | 23 ++- drivers/net/ethernet/intel/idpf/idpf_ptp.c | 3 + .../net/ethernet/intel/idpf/idpf_singleq_txrx.c | 2 +- drivers/net/ethernet/intel/idpf/idpf_txrx.c | 2 +- drivers/net/ethernet/intel/idpf/idpf_virtchnl.c | 4 +- .../net/ethernet/intel/idpf/idpf_virtchnl_ptp.c | 1 + drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 3 +- drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 79 +++++++++ drivers/net/ethernet/intel/ixgbevf/ipsec.c | 10 ++ drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 34 +++- drivers/net/ethernet/intel/ixgbevf/vf.c | 182 +++++++++++++++++---- 18 files changed, 335 insertions(+), 62 deletions(-) --- base-commit: daa26ea63c6f848159821cd9b3cbe47cddbb0a1c change-id: 20251001-jk-iwl-net-2025-10-01-92cd2a626ff7 Best regards, -- Jacob Keller <jacob.e.keller(a)intel.com>

1 month, 3 weeks

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[PATCH AUTOSEL 6.17-5.4] x86/build: Remove cc-option from stack alignment flags

by Sasha Levin

From: Nathan Chancellor <nathan(a)kernel.org> [ Upstream commit d87208128a3330c0eab18301ab39bdb419647730 ] '-mpreferred-stack-boundary' (the GCC option) and '-mstack-alignment' (the clang option) have been supported in their respective compilers for some time, so it is unnecessary to check for support for them via cc-option. '-mpreferred-stack-boundary=3' had a restriction on '-mno-sse' until GCC 7.1 but that is irrelevant for most of the kernel, which includes '-mno-sse'. Move to simple Kconfig checks to avoid querying the compiler for the flags that it supports. Signed-off-by: Nathan Chancellor <nathan(a)kernel.org> Signed-off-by: Borislav Petkov (AMD) <bp(a)alien8.de> Link: https://lore.kernel.org/20250814-x86-min-ver-cleanups-v1-2-ff7f19457523@ker… Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- LLM Generated explanations, may be completely bogus: Based on my comprehensive analysis of this commit, here is my determination: ## Backport Status: NO ### Extensive Analysis **Commit Context:** - Upstream commit: d87208128a3330c0eab18301ab39bdb419647730 (August 14, 2025) - Author: Nathan Chancellor - Part of patch series: "x86-min-ver-cleanups-v1" - Already backported to 6.17 stable as 8be33f616f1c4 via AUTOSEL (Automatic Stable Election) - Target tree: linux-autosel-6.17 (kernel 6.17) **What the Commit Does:** The commit removes runtime compiler capability checks (`cc-option`) for stack alignment flags and replaces them with build-time Kconfig checks: - For GCC: Uses `CONFIG_CC_IS_GCC` to unconditionally set `-mpreferred- stack-boundary=2/3` - For Clang: Uses `CONFIG_CC_IS_CLANG` to unconditionally set `-mstack- alignment=4/8` **Code Changes Analysis:** ```makefile # OLD: Runtime check if compiler supports the flags -ifneq ($(call cc-option, -mpreferred-stack-boundary=4),) +ifdef CONFIG_CC_IS_GCC cc_stack_align4 := -mpreferred-stack-boundary=2 cc_stack_align8 := -mpreferred-stack-boundary=3 -else ifneq ($(call cc-option, -mstack-alignment=16),) +endif +ifdef CONFIG_CC_IS_CLANG cc_stack_align4 := -mstack-alignment=4 cc_stack_align8 := -mstack-alignment=8 endif ``` **Dependency Analysis:** - Requires minimum GCC 8.1 for x86 (introduced in v6.15 via commit a3e8fe814ad1) - Requires minimum Clang 15.0.0 for x86 (commit 7861640aac52b) - Both requirements are satisfied in 6.17 stable tree (verified via scripts/min-tool-version.sh) - GCC 7.1+ supports `-mpreferred-stack-boundary=3` with `-msse` (per GCC commit 34fac449e121) **Evaluation Against Stable Kernel Rules:** According to Documentation/process/stable-kernel-rules.rst, stable patches must: 1. ✅ **Already exist in mainline**: YES - d87208128a3330c0eab18301ab39bdb419647730 2. ✅ **Obviously correct and tested**: YES - simple Makefile change, no issues found 3. ✅ **Not bigger than 100 lines**: YES - only 5 lines changed (3 insertions, 2 deletions) 4. ✅ **Follow submitting-patches.rst rules**: YES 5. ❌ **Fix a real bug or add device ID**: **NO - This is the critical failure** The rules explicitly state (lines 15-31 of stable-kernel-rules.rst): > "It must either fix a real bug that bothers people or just add a device ID." This commit: - Does **NOT** fix a bug (no oops, hang, data corruption, security issue, build error, etc.) - Is a **cleanup/optimization** to improve build performance - Provides **no user-visible bug fix** - Falls under "trivial fixes without benefit for users" category (rule line 30-31) - The original author did **NOT** tag it with `Cc: stable(a)vger.kernel.org` **Search for Issues/Regressions:** - Searched Linux kernel mailing lists: No issues found - Searched for reverts: None found - Searched for build failures: None reported - Part of systematic cleanup series with no reported problems **Risk Assessment:** - **Technical risk**: Very low - simple change, dependencies satisfied - **Regression risk**: Very low - no functionality change, just build system optimization - **Policy compliance**: **Does not meet stable kernel criteria** ### Conclusion While this commit is technically safe and provides a marginal build-time performance improvement by eliminating unnecessary runtime compiler checks, **it does not meet the fundamental requirement for stable kernel backporting**: it does not fix a bug that affects users. The commit is purely a cleanup that removes obsolete code after compiler minimum version requirements were raised. Such cleanups belong in mainline development, not stable trees, which should focus exclusively on fixing bugs that impact users. The fact that it was auto-selected by AUTOSEL does not override the documented stable kernel rules. This commit should be **rejected** from stable backporting or **reverted** if already applied. arch/x86/Makefile | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 1913d342969ba..7cfc1b31f17e1 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -37,10 +37,11 @@ export RETPOLINE_VDSO_CFLAGS # For gcc stack alignment is specified with -mpreferred-stack-boundary, # clang has the option -mstack-alignment for that purpose. -ifneq ($(call cc-option, -mpreferred-stack-boundary=4),) +ifdef CONFIG_CC_IS_GCC cc_stack_align4 := -mpreferred-stack-boundary=2 cc_stack_align8 := -mpreferred-stack-boundary=3 -else ifneq ($(call cc-option, -mstack-alignment=16),) +endif +ifdef CONFIG_CC_IS_CLANG cc_stack_align4 := -mstack-alignment=4 cc_stack_align8 := -mstack-alignment=8 endif -- 2.51.0

1 month, 3 weeks

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[PATCH net v2 0/6] Intel Wired LAN Driver Updates 2025-10-01 (idpf, ixgbe, ixgbevf)

by Jacob Keller

For idpf: Milena fixes a memory leak in the idpf reset logic when the driver resets with an outstanding Tx timestamp. For ixgbe and ixgbevf: Jedrzej fixes an issue with reporting link speed on E610 VFs. Jedrzej also fixes the VF mailbox API incompatibilities caused by the confusion with API v1.4, v1.5, and v1.6. The v1.4 API introduced IPSEC offload, but this was only supported on Linux hosts. The v1.5 API introduced a new mailbox API which is necessary to resolve issues on ESX hosts. The v1.6 API introduced a new link management API for E610. Jedrzej introduces a new v1.7 API with a feature negotiation which enables properly checking if features such as IPSEC or the ESX mailbox APIs are supported. This resolves issues with compatibility on different hosts, and aligns the API across hosts instead of having Linux require custom mailbox API versions for IPSEC offload. Koichiro fixes a KASAN use-after-free bug in ixgbe_remove(). Signed-off-by: Jacob Keller <jacob.e.keller(a)intel.com> --- Changes in v2: - Drop Emil's idpf_vport_open race fix for now. - Add my signature. - Link to v1: https://lore.kernel.org/r/20251001-jk-iwl-net-2025-10-01-v1-0-49fa99e86600@… --- Jedrzej Jagielski (4): ixgbevf: fix getting link speed data for E610 devices ixgbe: handle IXGBE_VF_GET_PF_LINK_STATE mailbox operation ixgbevf: fix mailbox API compatibility by negotiating supported features ixgbe: handle IXGBE_VF_FEATURES_NEGOTIATE mbox cmd Koichiro Den (1): ixgbe: fix too early devlink_free() in ixgbe_remove() Milena Olech (1): idpf: cleanup remaining SKBs in PTP flows drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h | 15 ++ drivers/net/ethernet/intel/ixgbevf/defines.h | 1 + drivers/net/ethernet/intel/ixgbevf/ixgbevf.h | 7 + drivers/net/ethernet/intel/ixgbevf/mbx.h | 8 + drivers/net/ethernet/intel/ixgbevf/vf.h | 1 + drivers/net/ethernet/intel/idpf/idpf_ptp.c | 3 + .../net/ethernet/intel/idpf/idpf_virtchnl_ptp.c | 1 + drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 3 +- drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 79 +++++++++ drivers/net/ethernet/intel/ixgbevf/ipsec.c | 10 ++ drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 34 +++- drivers/net/ethernet/intel/ixgbevf/vf.c | 182 +++++++++++++++++---- 12 files changed, 310 insertions(+), 34 deletions(-) --- base-commit: daa26ea63c6f848159821cd9b3cbe47cddbb0a1c change-id: 20251001-jk-iwl-net-2025-10-01-92cd2a626ff7 Best regards, -- Jacob Keller <jacob.e.keller(a)intel.com>

1 month, 3 weeks

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[PATCH net v2] page_pool: Fix PP_MAGIC_MASK to avoid crashing on some 32-bit arches

by Toke Høiland-Jørgensen

Helge reported that the introduction of PP_MAGIC_MASK let to crashes on boot on his 32-bit parisc machine. The cause of this is the mask is set too wide, so the page_pool_page_is_pp() incurs false positives which crashes the machine. Just disabling the check in page_pool_is_pp() will lead to the page_pool code itself malfunctioning; so instead of doing this, this patch changes the define for PP_DMA_INDEX_BITS to avoid mistaking arbitrary kernel pointers for page_pool-tagged pages. The fix relies on the kernel pointers that alias with the pp_magic field always being above PAGE_OFFSET. With this assumption, we can use the lowest bit of the value of PAGE_OFFSET as the upper bound of the PP_DMA_INDEX_MASK, which should avoid the false positives. Because we cannot rely on PAGE_OFFSET always being a compile-time constant, nor on it always being >0, we fall back to disabling the dma_index storage when there are not enough bits available. This leaves us in the situation we were in before the patch in the Fixes tag, but only on a subset of architecture configurations. This seems to be the best we can do until the transition to page types in complete for page_pool pages. v2: - Make sure there's at least 8 bits available and that the PAGE_OFFSET bit calculation doesn't wrap Link: https://lore.kernel.org/all/aMNJMFa5fDalFmtn@p100/ Fixes: ee62ce7a1d90 ("page_pool: Track DMA-mapped pages and unmap them when destroying the pool") Cc: stable(a)vger.kernel.org # 6.15+ Tested-by: Helge Deller <deller(a)gmx.de> Signed-off-by: Toke Høiland-Jørgensen <toke(a)redhat.com> --- include/linux/mm.h | 22 +++++++------ net/core/page_pool.c | 76 ++++++++++++++++++++++++++++++-------------- 2 files changed, 66 insertions(+), 32 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 1ae97a0b8ec7..0905eb6b55ec 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -4159,14 +4159,13 @@ int arch_lock_shadow_stack_status(struct task_struct *t, unsigned long status); * since this value becomes part of PP_SIGNATURE; meaning we can just use the * space between the PP_SIGNATURE value (without POISON_POINTER_DELTA), and the * lowest bits of POISON_POINTER_DELTA. On arches where POISON_POINTER_DELTA is - * 0, we make sure that we leave the two topmost bits empty, as that guarantees - * we won't mistake a valid kernel pointer for a value we set, regardless of the - * VMSPLIT setting. + * 0, we use the lowest bit of PAGE_OFFSET as the boundary if that value is + * known at compile-time. * - * Altogether, this means that the number of bits available is constrained by - * the size of an unsigned long (at the upper end, subtracting two bits per the - * above), and the definition of PP_SIGNATURE (with or without - * POISON_POINTER_DELTA). + * If the value of PAGE_OFFSET is not known at compile time, or if it is too + * small to leave at least 8 bits available above PP_SIGNATURE, we define the + * number of bits to be 0, which turns off the DMA index tracking altogether + * (see page_pool_register_dma_index()). */ #define PP_DMA_INDEX_SHIFT (1 + __fls(PP_SIGNATURE - POISON_POINTER_DELTA)) #if POISON_POINTER_DELTA > 0 @@ -4175,8 +4174,13 @@ int arch_lock_shadow_stack_status(struct task_struct *t, unsigned long status); */ #define PP_DMA_INDEX_BITS MIN(32, __ffs(POISON_POINTER_DELTA) - PP_DMA_INDEX_SHIFT) #else -/* Always leave out the topmost two; see above. */ -#define PP_DMA_INDEX_BITS MIN(32, BITS_PER_LONG - PP_DMA_INDEX_SHIFT - 2) +/* Use the lowest bit of PAGE_OFFSET if there's at least 8 bits available; see above */ +#define PP_DMA_INDEX_MIN_OFFSET (1 << (PP_DMA_INDEX_SHIFT + 8)) +#define PP_DMA_INDEX_BITS ((__builtin_constant_p(PAGE_OFFSET) && \ + PAGE_OFFSET >= PP_DMA_INDEX_MIN_OFFSET && \ + !(PAGE_OFFSET & (PP_DMA_INDEX_MIN_OFFSET - 1))) ? \ + MIN(32, __ffs(PAGE_OFFSET) - PP_DMA_INDEX_SHIFT) : 0) + #endif #define PP_DMA_INDEX_MASK GENMASK(PP_DMA_INDEX_BITS + PP_DMA_INDEX_SHIFT - 1, \ diff --git a/net/core/page_pool.c b/net/core/page_pool.c index 492728f9e021..1a5edec485f1 100644 --- a/net/core/page_pool.c +++ b/net/core/page_pool.c @@ -468,11 +468,60 @@ page_pool_dma_sync_for_device(const struct page_pool *pool, } } +static int page_pool_register_dma_index(struct page_pool *pool, + netmem_ref netmem, gfp_t gfp) +{ + int err = 0; + u32 id; + + if (unlikely(!PP_DMA_INDEX_BITS)) + goto out; + + if (in_softirq()) + err = xa_alloc(&pool->dma_mapped, &id, netmem_to_page(netmem), + PP_DMA_INDEX_LIMIT, gfp); + else + err = xa_alloc_bh(&pool->dma_mapped, &id, netmem_to_page(netmem), + PP_DMA_INDEX_LIMIT, gfp); + if (err) { + WARN_ONCE(err != -ENOMEM, "couldn't track DMA mapping, please report to netdev@"); + goto out; + } + + netmem_set_dma_index(netmem, id); +out: + return err; +} + +static int page_pool_release_dma_index(struct page_pool *pool, + netmem_ref netmem) +{ + struct page *old, *page = netmem_to_page(netmem); + unsigned long id; + + if (unlikely(!PP_DMA_INDEX_BITS)) + return 0; + + id = netmem_get_dma_index(netmem); + if (!id) + return -1; + + if (in_softirq()) + old = xa_cmpxchg(&pool->dma_mapped, id, page, NULL, 0); + else + old = xa_cmpxchg_bh(&pool->dma_mapped, id, page, NULL, 0); + if (old != page) + return -1; + + netmem_set_dma_index(netmem, 0); + + return 0; +} + static bool page_pool_dma_map(struct page_pool *pool, netmem_ref netmem, gfp_t gfp) { dma_addr_t dma; int err; - u32 id; /* Setup DMA mapping: use 'struct page' area for storing DMA-addr * since dma_addr_t can be either 32 or 64 bits and does not always fit @@ -491,18 +540,10 @@ static bool page_pool_dma_map(struct page_pool *pool, netmem_ref netmem, gfp_t g goto unmap_failed; } - if (in_softirq()) - err = xa_alloc(&pool->dma_mapped, &id, netmem_to_page(netmem), - PP_DMA_INDEX_LIMIT, gfp); - else - err = xa_alloc_bh(&pool->dma_mapped, &id, netmem_to_page(netmem), - PP_DMA_INDEX_LIMIT, gfp); - if (err) { - WARN_ONCE(err != -ENOMEM, "couldn't track DMA mapping, please report to netdev@"); + err = page_pool_register_dma_index(pool, netmem, gfp); + if (err) goto unset_failed; - } - netmem_set_dma_index(netmem, id); page_pool_dma_sync_for_device(pool, netmem, pool->p.max_len); return true; @@ -680,8 +721,6 @@ void page_pool_clear_pp_info(netmem_ref netmem) static __always_inline void __page_pool_release_netmem_dma(struct page_pool *pool, netmem_ref netmem) { - struct page *old, *page = netmem_to_page(netmem); - unsigned long id; dma_addr_t dma; if (!pool->dma_map) @@ -690,15 +729,7 @@ static __always_inline void __page_pool_release_netmem_dma(struct page_pool *poo */ return; - id = netmem_get_dma_index(netmem); - if (!id) - return; - - if (in_softirq()) - old = xa_cmpxchg(&pool->dma_mapped, id, page, NULL, 0); - else - old = xa_cmpxchg_bh(&pool->dma_mapped, id, page, NULL, 0); - if (old != page) + if (page_pool_release_dma_index(pool, netmem)) return; dma = page_pool_get_dma_addr_netmem(netmem); @@ -708,7 +739,6 @@ static __always_inline void __page_pool_release_netmem_dma(struct page_pool *poo PAGE_SIZE << pool->p.order, pool->p.dma_dir, DMA_ATTR_SKIP_CPU_SYNC | DMA_ATTR_WEAK_ORDERING); page_pool_set_dma_addr_netmem(netmem, 0); - netmem_set_dma_index(netmem, 0); } /* Disconnects a page (from a page_pool). API users can have a need -- 2.51.0

1 month, 3 weeks

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[PATCH] PCI: probe: fix typo: CONFIG_PCI_PWRCTRL -> CONFIG_PCI_PWRCTL

by Victor Paul

The commit 8c493cc91f3a ("PCI/pwrctrl: Create pwrctrl devices only when CONFIG_PCI_PWRCTRL is enabled") introduced a typo, it uses CONFIG_PCI_PWRCTRL while the correct symbol is CONFIG_PCI_PWRCTL. As reported by Daniel Martin, it causes device initialization failures on some arm boards. I encountered it on sm8250-xiaomi-pipa after rebasing from v6.15.8 to v6.15.11, with the following error: [ 6.035321] pcieport 0000:00:00.0: Failed to create device link (0x180) with supplier qca6390-pmu for /soc@0/pcie@1c00000/pcie@0/wifi@0 Fix the typo to use the correct CONFIG_PCI_PWRCTL symbol. Fixes: 8c493cc91f3a ("PCI/pwrctrl: Create pwrctrl devices only when CONFIG_PCI_PWRCTRL is enabled") Cc: stable(a)vger.kernel.org Reported-by: Daniel Martin <dmanlfc(a)gmail.com> Closes: https://lore.kernel.org/linux-pci/2025081053-expectant-observant-6268@gregk… Signed-off-by: Victor Paul <vipoll(a)mainlining.org> --- drivers/pci/probe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 19010c382864..7e97e33b3fb5 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -2508,7 +2508,7 @@ bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *l, } EXPORT_SYMBOL(pci_bus_read_dev_vendor_id); -#if IS_ENABLED(CONFIG_PCI_PWRCTRL) +#if IS_ENABLED(CONFIG_PCI_PWRCTL) static struct platform_device *pci_pwrctrl_create_device(struct pci_bus *bus, int devfn) { struct pci_host_bridge *host = pci_find_host_bridge(bus); -- 2.51.0

1 month, 3 weeks

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Backport request for commit 5326ab737a47 ("virtio_console: fix order of fields cols and rows")

by Filip Hejsek

Hi, I would like to request backporting 5326ab737a47 ("virtio_console: fix order of fields cols and rows") to all LTS kernels. I'm working on QEMU patches that add virtio console size support. Without the fix, rows and columns will be swapped. As far as I know, there are no device implementations that use the wrong order and would by broken by the fix. Note: A previous version [1] of the patch contained "Cc: stable" and "Fixes:" tags, but they seem to have been accidentally left out from the final version. [1]: https://lore.kernel.org/all/20250320172654.624657-1-maxbr@linux.ibm.com/ Thanks, Filip Hejsek

1 month, 3 weeks

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[PATCH] serial: sc16is7xx: remove useless enable of enhanced features

by Hugo Villeneuve

From: Hugo Villeneuve <hvilleneuve(a)dimonoff.com> Commit 43c51bb573aa ("sc16is7xx: make sure device is in suspend once probed") permanently enabled access to the enhanced features in sc16is7xx_probe(), and it is never disabled after that. Therefore, remove re-enable of enhanced features in sc16is7xx_set_baud(). This eliminates a potential useless read + write cycle each time the baud rate is reconfigured. Fixes: 43c51bb573aa ("sc16is7xx: make sure device is in suspend once probed") Cc: stable(a)vger.kernel.org Signed-off-by: Hugo Villeneuve <hvilleneuve(a)dimonoff.com> --- This patch was originally part of this series: https://lore.kernel.org/linux-serial/20251002145738.3250272-1-hugo@hugovil.… and it is now separate as suggested by Greg to facilitate stable backporting. --- drivers/tty/serial/sc16is7xx.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c index 1a2c4c14f6aac..c7435595dce13 100644 --- a/drivers/tty/serial/sc16is7xx.c +++ b/drivers/tty/serial/sc16is7xx.c @@ -588,13 +588,6 @@ static int sc16is7xx_set_baud(struct uart_port *port, int baud) div /= prescaler; } - /* Enable enhanced features */ - sc16is7xx_efr_lock(port); - sc16is7xx_port_update(port, SC16IS7XX_EFR_REG, - SC16IS7XX_EFR_ENABLE_BIT, - SC16IS7XX_EFR_ENABLE_BIT); - sc16is7xx_efr_unlock(port); - /* If bit MCR_CLKSEL is set, the divide by 4 prescaler is activated. */ sc16is7xx_port_update(port, SC16IS7XX_MCR_REG, SC16IS7XX_MCR_CLKSEL_BIT, base-commit: fd94619c43360eb44d28bd3ef326a4f85c600a07 -- 2.39.5

1 month, 3 weeks

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[PATCH v3] Revert "sunvdc: Do not spin in an infinite loop when vio_ldc_send() returns EAGAIN"

by John Paul Adrian Glaubitz

In a11f6ca9aef9 ("sunvdc: Do not spin in an infinite loop when vio_ldc_send() returns EAGAIN"), a maximum retry count was added to __vdc_tx_trigger(). After this change, several users reported disk I/O errors when running Linux inside a logical domain on Solaris 11.4: [19095.192532] sunvdc: vdc_tx_trigger() failure, err=-11 [19095.192605] I/O error, dev vdiskc, sector 368208928 op 0x1:(WRITE) flags 0x1000 phys_seg 2 prio class 2 [19095.205681] XFS (vdiskc1): metadata I/O error in "xfs_buf_ioend+0x28c/0x600 [xfs]" at daddr 0x15f26420 len 32 error 5 [19432.043471] sunvdc: vdc_tx_trigger() failure, err=-11 [19432.043529] I/O error, dev vdiskc, sector 3732568 op 0x1:(WRITE) flags 0x1000 phys_seg 1 prio class 2 [19432.058821] sunvdc: vdc_tx_trigger() failure, err=-11 [19432.058843] I/O error, dev vdiskc, sector 3736256 op 0x1:(WRITE) flags 0x1000 phys_seg 4 prio class 2 [19432.074109] sunvdc: vdc_tx_trigger() failure, err=-11 [19432.074128] I/O error, dev vdiskc, sector 3736512 op 0x1:(WRITE) flags 0x1000 phys_seg 4 prio class 2 [19432.089425] sunvdc: vdc_tx_trigger() failure, err=-11 [19432.089443] I/O error, dev vdiskc, sector 3737024 op 0x1:(WRITE) flags 0x1000 phys_seg 1 prio class 2 [19432.100964] XFS (vdiskc1): metadata I/O error in "xfs_buf_ioend+0x28c/0x600 [xfs]" at daddr 0x38ec58 len 8 error 5 Since this change seems to have only been justified by reading the code which becomes evident by the reference to adddc32d6fde ("sunvnet: Do not spin in an infinite loop when vio_ldc_send() returns EAGAIN") in the commit message, it can be safely assumed that the change was neither properly tested nor motivated by any actual bug reports. Thus, let's revert this change to address the disk I/O errors above. Cc: stable(a)vger.kernel.org Fixes: a11f6ca9aef9 ("sunvdc: Do not spin in an infinite loop when vio_ldc_send() returns EAGAIN") Signed-off-by: John Paul Adrian Glaubitz <glaubitz(a)physik.fu-berlin.de> --- Changes since v1: - Rephrase commit message Changes since v2: - Add missing CC and Fixes tags --- drivers/block/sunvdc.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/drivers/block/sunvdc.c b/drivers/block/sunvdc.c index 282f81616a78..f56023c2b033 100644 --- a/drivers/block/sunvdc.c +++ b/drivers/block/sunvdc.c @@ -45,8 +45,6 @@ MODULE_VERSION(DRV_MODULE_VERSION); #define WAITING_FOR_GEN_CMD 0x04 #define WAITING_FOR_ANY -1 -#define VDC_MAX_RETRIES 10 - static struct workqueue_struct *sunvdc_wq; struct vdc_req_entry { @@ -437,7 +435,6 @@ static int __vdc_tx_trigger(struct vdc_port *port) .end_idx = dr->prod, }; int err, delay; - int retries = 0; hdr.seq = dr->snd_nxt; delay = 1; @@ -450,8 +447,6 @@ static int __vdc_tx_trigger(struct vdc_port *port) udelay(delay); if ((delay <<= 1) > 128) delay = 128; - if (retries++ > VDC_MAX_RETRIES) - break; } while (err == -EAGAIN); if (err == -ENOTCONN) -- 2.47.3

1 month, 3 weeks

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71d2893a235bf3b95baccead27b3d47f2f2cdc4c

by Gergo Koteles

Hey Greg, I think this commit should be applied to v6.16 stable, because without it some speakers may be damaged. Thanks, Gergo

1 month, 3 weeks

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[STABLE 5.15.y] [PATCH] KVM: arm64: Fix softirq masking in FPSIMD register saving sequence

by Will Deacon

Stable commit 23249dade24e ("KVM: arm64: Fix kernel BUG() due to bad backport of FPSIMD/SVE/SME fix") fixed a kernel BUG() caused by a bad backport of upstream commit fbc7e61195e2 ("KVM: arm64: Unconditionally save+flush host FPSIMD/SVE/SME state") by ensuring that softirqs are disabled/enabled across the fpsimd register save operation. Unfortunately, although this fixes the original issue, it can now lead to deadlock when re-enabling softirqs causes pending softirqs to be handled with locks already held: | BUG: spinlock recursion on CPU#7, CPU 3/KVM/57616 | lock: 0xffff3045ef850240, .magic: dead4ead, .owner: CPU 3/KVM/57616, .owner_cpu: 7 | CPU: 7 PID: 57616 Comm: CPU 3/KVM Tainted: G O 6.1.152 #1 | Hardware name: SoftIron SoftIron Platform Mainboard/SoftIron Platform Mainboard, BIOS 1.31 May 11 2023 | Call trace: | dump_backtrace+0xe4/0x110 | show_stack+0x20/0x30 | dump_stack_lvl+0x6c/0x88 | dump_stack+0x18/0x34 | spin_dump+0x98/0xac | do_raw_spin_lock+0x70/0x128 | _raw_spin_lock+0x18/0x28 | raw_spin_rq_lock_nested+0x18/0x28 | update_blocked_averages+0x70/0x550 | run_rebalance_domains+0x50/0x70 | handle_softirqs+0x198/0x328 | __do_softirq+0x1c/0x28 | ____do_softirq+0x18/0x28 | call_on_irq_stack+0x30/0x48 | do_softirq_own_stack+0x24/0x30 | do_softirq+0x74/0x90 | __local_bh_enable_ip+0x64/0x80 | fpsimd_save_and_flush_cpu_state+0x5c/0x68 | kvm_arch_vcpu_put_fp+0x4c/0x88 | kvm_arch_vcpu_put+0x28/0x88 | kvm_sched_out+0x38/0x58 | __schedule+0x55c/0x6c8 | schedule+0x60/0xa8 Take a tiny step towards the upstream fix in 9b19700e623f ("arm64: fpsimd: Drop unneeded 'busy' flag") by additionally disabling hardirqs while saving the fpsimd registers. Cc: Ard Biesheuvel <ardb(a)kernel.org> Cc: Lee Jones <lee(a)kernel.org> Cc: Sasha Levin <sashal(a)kernel.org> Cc: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org Cc: <stable(a)vger.kernel.org> # 5.15.y Fixes: 23249dade24e ("KVM: arm64: Fix kernel BUG() due to bad backport of FPSIMD/SVE/SME fix") Reported-by: Kenneth Van Alstyne <kvanals(a)kvanals.org> Link: https://lore.kernel.org/r/010001999bae0958-4d80d25d-8dda-4006-a6b9-798f3e77… Signed-off-by: Will Deacon <will(a)kernel.org> --- arch/arm64/kernel/fpsimd.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index fc51cdd5aaa7..db1ed940a6dc 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -1300,13 +1300,17 @@ static void fpsimd_flush_cpu_state(void) */ void fpsimd_save_and_flush_cpu_state(void) { + unsigned long flags; + if (!system_supports_fpsimd()) return; WARN_ON(preemptible()); - get_cpu_fpsimd_context(); + local_irq_save(flags); + __get_cpu_fpsimd_context(); fpsimd_save(); fpsimd_flush_cpu_state(); - put_cpu_fpsimd_context(); + __put_cpu_fpsimd_context(); + local_irq_restore(flags); } #ifdef CONFIG_KERNEL_MODE_NEON -- 2.51.0.618.g983fd99d29-goog

1 month, 3 weeks

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Linux 6.17.1

by Greg Kroah-Hartman

I'm announcing the release of the 6.17.1 kernel. All users of the 6.17 kernel series must upgrade. The updated 6.17.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-6.17.y and can be browsed at the normal kernel.org git web browser: https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary thanks, greg k-h ------------ Makefile | 2 block/blk-mq-tag.c | 1 drivers/media/i2c/tc358743.c | 4 - drivers/media/pci/b2c2/flexcop-pci.c | 2 drivers/media/platform/qcom/iris/iris_buffer.c | 10 +++ drivers/media/platform/st/stm32/stm32-csi.c | 4 - drivers/media/rc/imon.c | 27 ++++++--- drivers/media/tuners/xc5000.c | 2 drivers/media/usb/uvc/uvc_driver.c | 73 +++++++++++++++---------- drivers/media/usb/uvc/uvcvideo.h | 2 drivers/net/wireless/ath/ath11k/qmi.c | 2 drivers/net/wireless/realtek/rtw89/core.c | 30 ++++++++-- drivers/net/wireless/realtek/rtw89/core.h | 35 +++++++++++ drivers/net/wireless/realtek/rtw89/pci.c | 3 - drivers/net/wireless/realtek/rtw89/ser.c | 2 drivers/target/target_core_configfs.c | 2 mm/swapfile.c | 3 + scripts/gcc-plugins/gcc-common.h | 7 ++ sound/soc/qcom/qdsp6/topology.c | 4 - sound/usb/midi.c | 9 +-- 20 files changed, 165 insertions(+), 59 deletions(-) Chandra Mohan Sundar (1): media: stm32-csi: Fix dereference before NULL check Charan Teja Kalla (1): mm: swap: check for stable address space before operating on the VMA Dikshita Agarwal (1): media: iris: Fix memory leak by freeing untracked persist buffer Duoming Zhou (3): media: b2c2: Fix use-after-free causing by irq_check_work in flexcop_pci_remove media: i2c: tc358743: Fix use-after-free bugs caused by orphan timer in probe media: tuner: xc5000: Fix use-after-free in xc5000_release Fedor Pchelkin (1): wifi: rtw89: fix use-after-free in rtw89_core_tx_kick_off_and_wait() Greg Kroah-Hartman (1): Linux 6.17.1 Jeongjun Park (1): ALSA: usb-audio: fix race condition to UAF in snd_usbmidi_free Kees Cook (1): gcc-plugins: Remove TODO_verify_il for GCC >= 16 Larshin Sergey (1): media: rc: fix races with imon_disconnect() Matvey Kovalev (1): wifi: ath11k: fix NULL dereference in ath11k_qmi_m3_load() Srinivas Kandagatla (1): ASoC: qcom: audioreach: fix potential null pointer dereference Thadeu Lima de Souza Cascardo (1): media: uvcvideo: Mark invalid entities with id UVC_INVALID_ENTITY_ID Wang Haoran (1): scsi: target: target_core_configfs: Add length check to avoid buffer overflow Yu Kuai (1): blk-mq: fix blk_mq_tags double free while nr_requests grown

1 month, 3 weeks

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Linux 6.16.11

by Greg Kroah-Hartman

I'm announcing the release of the 6.16.11 kernel. All users of the 6.16 kernel series must upgrade. The updated 6.16.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-6.16.y and can be browsed at the normal kernel.org git web browser: https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary thanks, greg k-h ------------ Makefile | 2 block/blk-mq-tag.c | 1 drivers/media/i2c/tc358743.c | 4 - drivers/media/pci/b2c2/flexcop-pci.c | 2 drivers/media/platform/qcom/iris/iris_buffer.c | 10 +++ drivers/media/platform/st/stm32/stm32-csi.c | 4 - drivers/media/rc/imon.c | 27 ++++++--- drivers/media/tuners/xc5000.c | 2 drivers/media/usb/uvc/uvc_driver.c | 73 +++++++++++++++---------- drivers/media/usb/uvc/uvcvideo.h | 2 drivers/net/wireless/ath/ath11k/qmi.c | 2 drivers/target/target_core_configfs.c | 2 mm/swapfile.c | 3 + scripts/gcc-plugins/gcc-common.h | 7 ++ sound/soc/qcom/qdsp6/topology.c | 4 - sound/usb/midi.c | 9 +-- 16 files changed, 104 insertions(+), 50 deletions(-) Chandra Mohan Sundar (1): media: stm32-csi: Fix dereference before NULL check Charan Teja Kalla (1): mm: swap: check for stable address space before operating on the VMA Dikshita Agarwal (1): media: iris: Fix memory leak by freeing untracked persist buffer Duoming Zhou (3): media: b2c2: Fix use-after-free causing by irq_check_work in flexcop_pci_remove media: i2c: tc358743: Fix use-after-free bugs caused by orphan timer in probe media: tuner: xc5000: Fix use-after-free in xc5000_release Greg Kroah-Hartman (1): Linux 6.16.11 Jeongjun Park (1): ALSA: usb-audio: fix race condition to UAF in snd_usbmidi_free Kees Cook (1): gcc-plugins: Remove TODO_verify_il for GCC >= 16 Larshin Sergey (1): media: rc: fix races with imon_disconnect() Matvey Kovalev (1): wifi: ath11k: fix NULL dereference in ath11k_qmi_m3_load() Srinivas Kandagatla (1): ASoC: qcom: audioreach: fix potential null pointer dereference Thadeu Lima de Souza Cascardo (1): media: uvcvideo: Mark invalid entities with id UVC_INVALID_ENTITY_ID Wang Haoran (1): scsi: target: target_core_configfs: Add length check to avoid buffer overflow Yu Kuai (1): blk-mq: fix blk_mq_tags double free while nr_requests grown

1 month, 3 weeks

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Linux 6.12.51

by Greg Kroah-Hartman

I'm announcing the release of the 6.12.51 kernel. All users of the 6.12 kernel series must upgrade. The updated 6.12.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-6.12.y and can be browsed at the normal kernel.org git web browser: https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary thanks, greg k-h ------------ Makefile | 2 drivers/media/pci/b2c2/flexcop-pci.c | 2 drivers/media/rc/imon.c | 27 +++++++++--- drivers/media/tuners/xc5000.c | 2 drivers/media/usb/uvc/uvc_driver.c | 73 +++++++++++++++++++++------------- drivers/media/usb/uvc/uvcvideo.h | 2 drivers/net/wireless/ath/ath11k/qmi.c | 2 drivers/target/target_core_configfs.c | 2 include/crypto/sha256_base.h | 2 mm/swapfile.c | 3 + scripts/gcc-plugins/gcc-common.h | 7 +++ sound/soc/qcom/qdsp6/topology.c | 4 - 12 files changed, 86 insertions(+), 42 deletions(-) Breno Leitao (1): crypto: sha256 - fix crash at kexec Charan Teja Kalla (1): mm: swap: check for stable address space before operating on the VMA Duoming Zhou (2): media: b2c2: Fix use-after-free causing by irq_check_work in flexcop_pci_remove media: tuner: xc5000: Fix use-after-free in xc5000_release Greg Kroah-Hartman (1): Linux 6.12.51 Kees Cook (1): gcc-plugins: Remove TODO_verify_il for GCC >= 16 Larshin Sergey (1): media: rc: fix races with imon_disconnect() Matvey Kovalev (1): wifi: ath11k: fix NULL dereference in ath11k_qmi_m3_load() Srinivas Kandagatla (1): ASoC: qcom: audioreach: fix potential null pointer dereference Thadeu Lima de Souza Cascardo (1): media: uvcvideo: Mark invalid entities with id UVC_INVALID_ENTITY_ID Wang Haoran (1): scsi: target: target_core_configfs: Add length check to avoid buffer overflow

1 month, 3 weeks

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Linux 6.6.110

by Greg Kroah-Hartman

I'm announcing the release of the 6.6.110 kernel. All users of the 6.6 kernel series must upgrade. The updated 6.6.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-6.6.y and can be browsed at the normal kernel.org git web browser: https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary thanks, greg k-h ------------ Makefile | 2 drivers/media/pci/b2c2/flexcop-pci.c | 2 drivers/media/rc/imon.c | 27 +++++++++--- drivers/media/usb/uvc/uvc_driver.c | 73 +++++++++++++++++++++------------- drivers/media/usb/uvc/uvcvideo.h | 2 drivers/target/target_core_configfs.c | 2 include/crypto/sha256_base.h | 2 scripts/gcc-plugins/gcc-common.h | 7 +++ sound/soc/qcom/qdsp6/topology.c | 4 - 9 files changed, 81 insertions(+), 40 deletions(-) Breno Leitao (1): crypto: sha256 - fix crash at kexec Duoming Zhou (1): media: b2c2: Fix use-after-free causing by irq_check_work in flexcop_pci_remove Greg Kroah-Hartman (1): Linux 6.6.110 Kees Cook (1): gcc-plugins: Remove TODO_verify_il for GCC >= 16 Larshin Sergey (1): media: rc: fix races with imon_disconnect() Srinivas Kandagatla (1): ASoC: qcom: audioreach: fix potential null pointer dereference Thadeu Lima de Souza Cascardo (1): media: uvcvideo: Mark invalid entities with id UVC_INVALID_ENTITY_ID Wang Haoran (1): scsi: target: target_core_configfs: Add length check to avoid buffer overflow

1 month, 3 weeks

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[PATCH v8 1/3] drm/buddy: Optimize free block management with RB tree

by Arunpravin Paneer Selvam

Replace the freelist (O(n)) used for free block management with a red-black tree, providing more efficient O(log n) search, insert, and delete operations. This improves scalability and performance when managing large numbers of free blocks per order (e.g., hundreds or thousands). In the VK-CTS memory stress subtest, the buddy manager merges fragmented memory and inserts freed blocks into the freelist. Since freelist insertion is O(n), this becomes a bottleneck as fragmentation increases. Benchmarking shows list_insert_sorted() consumes ~52.69% CPU with the freelist, compared to just 0.03% with the RB tree (rbtree_insert.isra.0), despite performing the same sorted insert. This also improves performance in heavily fragmented workloads, such as games or graphics tests that stress memory. As the buddy allocator evolves with new features such as clear-page tracking, the resulting fragmentation and complexity have grown. These RB-tree based design changes are introduced to address that growth and ensure the allocator continues to perform efficiently under fragmented conditions. The RB tree implementation with separate clear/dirty trees provides: - O(n log n) aggregate complexity for all operations instead of O(n^2) - Elimination of soft lockups and system instability - Improved code maintainability and clarity - Better scalability for large memory systems - Predictable performance under fragmentation v3(Matthew): - Remove RB_EMPTY_NODE check in force_merge function. - Rename rb for loop macros to have less generic names and move to .c file. - Make the rb node rb and link field as union. v4(Jani Nikula): - The kernel-doc comment should be "/**" - Move all the rbtree macros to rbtree.h and add parens to ensure correct precedence. v5: - Remove the inline in a .c file (Jani Nikula). v6(Peter Zijlstra): - Add rb_add() function replacing the existing rbtree_insert() code. v7: - A full walk iteration in rbtree is slower than the list (Peter Zijlstra). - The existing rbtree_postorder_for_each_entry_safe macro should be used in scenarios where traversal order is not a critical factor (Christian). v8(Matthew): - Remove the rbtree_is_empty() check in this patch as well. Cc: stable(a)vger.kernel.org Fixes: a68c7eaa7a8f ("drm/amdgpu: Enable clear page functionality") Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam(a)amd.com> Reviewed-by: Matthew Auld <matthew.auld(a)intel.com> --- drivers/gpu/drm/drm_buddy.c | 195 ++++++++++++++++++++++-------------- include/drm/drm_buddy.h | 11 +- 2 files changed, 126 insertions(+), 80 deletions(-) diff --git a/drivers/gpu/drm/drm_buddy.c b/drivers/gpu/drm/drm_buddy.c index a94061f373de..c87210a06c31 100644 --- a/drivers/gpu/drm/drm_buddy.c +++ b/drivers/gpu/drm/drm_buddy.c @@ -14,6 +14,8 @@ static struct kmem_cache *slab_blocks; +#define rbtree_get_free_block(node) rb_entry((node), struct drm_buddy_block, rb) + static struct drm_buddy_block *drm_block_alloc(struct drm_buddy *mm, struct drm_buddy_block *parent, unsigned int order, @@ -31,6 +33,8 @@ static struct drm_buddy_block *drm_block_alloc(struct drm_buddy *mm, block->header |= order; block->parent = parent; + RB_CLEAR_NODE(&block->rb); + BUG_ON(block->header & DRM_BUDDY_HEADER_UNUSED); return block; } @@ -41,23 +45,49 @@ static void drm_block_free(struct drm_buddy *mm, kmem_cache_free(slab_blocks, block); } -static void list_insert_sorted(struct drm_buddy *mm, - struct drm_buddy_block *block) +static bool drm_buddy_block_offset_less(const struct drm_buddy_block *block, + const struct drm_buddy_block *node) { - struct drm_buddy_block *node; - struct list_head *head; + return drm_buddy_block_offset(block) < drm_buddy_block_offset(node); +} - head = &mm->free_list[drm_buddy_block_order(block)]; - if (list_empty(head)) { - list_add(&block->link, head); - return; - } +static bool rbtree_block_offset_less(struct rb_node *block, + const struct rb_node *node) +{ + return drm_buddy_block_offset_less(rbtree_get_free_block(block), + rbtree_get_free_block(node)); +} - list_for_each_entry(node, head, link) - if (drm_buddy_block_offset(block) < drm_buddy_block_offset(node)) - break; +static void rbtree_insert(struct drm_buddy *mm, + struct drm_buddy_block *block) +{ + rb_add(&block->rb, + &mm->free_tree[drm_buddy_block_order(block)], + rbtree_block_offset_less); +} + +static void rbtree_remove(struct drm_buddy *mm, + struct drm_buddy_block *block) +{ + struct rb_root *root; + + root = &mm->free_tree[drm_buddy_block_order(block)]; + rb_erase(&block->rb, root); + + RB_CLEAR_NODE(&block->rb); +} + +static struct drm_buddy_block * +rbtree_last_entry(struct drm_buddy *mm, unsigned int order) +{ + struct rb_node *node = rb_last(&mm->free_tree[order]); + + return node ? rb_entry(node, struct drm_buddy_block, rb) : NULL; +} - __list_add(&block->link, node->link.prev, &node->link); +static bool rbtree_is_empty(struct drm_buddy *mm, unsigned int order) +{ + return RB_EMPTY_ROOT(&mm->free_tree[order]); } static void clear_reset(struct drm_buddy_block *block) @@ -70,12 +100,13 @@ static void mark_cleared(struct drm_buddy_block *block) block->header |= DRM_BUDDY_HEADER_CLEAR; } -static void mark_allocated(struct drm_buddy_block *block) +static void mark_allocated(struct drm_buddy *mm, + struct drm_buddy_block *block) { block->header &= ~DRM_BUDDY_HEADER_STATE; block->header |= DRM_BUDDY_ALLOCATED; - list_del(&block->link); + rbtree_remove(mm, block); } static void mark_free(struct drm_buddy *mm, @@ -84,15 +115,16 @@ static void mark_free(struct drm_buddy *mm, block->header &= ~DRM_BUDDY_HEADER_STATE; block->header |= DRM_BUDDY_FREE; - list_insert_sorted(mm, block); + rbtree_insert(mm, block); } -static void mark_split(struct drm_buddy_block *block) +static void mark_split(struct drm_buddy *mm, + struct drm_buddy_block *block) { block->header &= ~DRM_BUDDY_HEADER_STATE; block->header |= DRM_BUDDY_SPLIT; - list_del(&block->link); + rbtree_remove(mm, block); } static inline bool overlaps(u64 s1, u64 e1, u64 s2, u64 e2) @@ -148,7 +180,7 @@ static unsigned int __drm_buddy_free(struct drm_buddy *mm, mark_cleared(parent); } - list_del(&buddy->link); + rbtree_remove(mm, buddy); if (force_merge && drm_buddy_block_is_clear(buddy)) mm->clear_avail -= drm_buddy_block_size(mm, buddy); @@ -179,13 +211,19 @@ static int __force_merge(struct drm_buddy *mm, return -EINVAL; for (i = min_order - 1; i >= 0; i--) { - struct drm_buddy_block *block, *prev; + struct rb_root *root = &mm->free_tree[i]; + struct rb_node *iter; + + iter = rb_last(root); - list_for_each_entry_safe_reverse(block, prev, &mm->free_list[i], link) { - struct drm_buddy_block *buddy; + while (iter) { + struct drm_buddy_block *block, *buddy; u64 block_start, block_end; - if (!block->parent) + block = rbtree_get_free_block(iter); + iter = rb_prev(iter); + + if (!block || !block->parent) continue; block_start = drm_buddy_block_offset(block); @@ -201,15 +239,10 @@ static int __force_merge(struct drm_buddy *mm, WARN_ON(drm_buddy_block_is_clear(block) == drm_buddy_block_is_clear(buddy)); - /* - * If the prev block is same as buddy, don't access the - * block in the next iteration as we would free the - * buddy block as part of the free function. - */ - if (prev == buddy) - prev = list_prev_entry(prev, link); + if (iter == &buddy->rb) + iter = rb_prev(iter); - list_del(&block->link); + rbtree_remove(mm, block); if (drm_buddy_block_is_clear(block)) mm->clear_avail -= drm_buddy_block_size(mm, block); @@ -237,7 +270,7 @@ static int __force_merge(struct drm_buddy *mm, int drm_buddy_init(struct drm_buddy *mm, u64 size, u64 chunk_size) { unsigned int i; - u64 offset; + u64 offset = 0; if (size < chunk_size) return -EINVAL; @@ -258,14 +291,14 @@ int drm_buddy_init(struct drm_buddy *mm, u64 size, u64 chunk_size) BUG_ON(mm->max_order > DRM_BUDDY_MAX_ORDER); - mm->free_list = kmalloc_array(mm->max_order + 1, - sizeof(struct list_head), + mm->free_tree = kmalloc_array(mm->max_order + 1, + sizeof(struct rb_root), GFP_KERNEL); - if (!mm->free_list) + if (!mm->free_tree) return -ENOMEM; for (i = 0; i <= mm->max_order; ++i) - INIT_LIST_HEAD(&mm->free_list[i]); + mm->free_tree[i] = RB_ROOT; mm->n_roots = hweight64(size); @@ -273,9 +306,8 @@ int drm_buddy_init(struct drm_buddy *mm, u64 size, u64 chunk_size) sizeof(struct drm_buddy_block *), GFP_KERNEL); if (!mm->roots) - goto out_free_list; + goto out_free_tree; - offset = 0; i = 0; /* @@ -312,8 +344,8 @@ int drm_buddy_init(struct drm_buddy *mm, u64 size, u64 chunk_size) while (i--) drm_block_free(mm, mm->roots[i]); kfree(mm->roots); -out_free_list: - kfree(mm->free_list); +out_free_tree: + kfree(mm->free_tree); return -ENOMEM; } EXPORT_SYMBOL(drm_buddy_init); @@ -323,7 +355,7 @@ EXPORT_SYMBOL(drm_buddy_init); * * @mm: DRM buddy manager to free * - * Cleanup memory manager resources and the freelist + * Cleanup memory manager resources and the freetree */ void drm_buddy_fini(struct drm_buddy *mm) { @@ -350,7 +382,7 @@ void drm_buddy_fini(struct drm_buddy *mm) WARN_ON(mm->avail != mm->size); kfree(mm->roots); - kfree(mm->free_list); + kfree(mm->free_tree); } EXPORT_SYMBOL(drm_buddy_fini); @@ -383,7 +415,7 @@ static int split_block(struct drm_buddy *mm, clear_reset(block); } - mark_split(block); + mark_split(mm, block); return 0; } @@ -412,7 +444,7 @@ EXPORT_SYMBOL(drm_get_buddy); * @is_clear: blocks clear state * * Reset the clear state based on @is_clear value for each block - * in the freelist. + * in the freetree. */ void drm_buddy_reset_clear(struct drm_buddy *mm, bool is_clear) { @@ -431,9 +463,9 @@ void drm_buddy_reset_clear(struct drm_buddy *mm, bool is_clear) } for (i = 0; i <= mm->max_order; ++i) { - struct drm_buddy_block *block; + struct drm_buddy_block *block, *tmp; - list_for_each_entry_reverse(block, &mm->free_list[i], link) { + rbtree_postorder_for_each_entry_safe(block, tmp, &mm->free_tree[i], rb) { if (is_clear != drm_buddy_block_is_clear(block)) { if (is_clear) { mark_cleared(block); @@ -639,14 +671,18 @@ get_maxblock(struct drm_buddy *mm, unsigned int order, unsigned int i; for (i = order; i <= mm->max_order; ++i) { + struct rb_node *iter = rb_last(&mm->free_tree[i]); struct drm_buddy_block *tmp_block; - list_for_each_entry_reverse(tmp_block, &mm->free_list[i], link) { - if (block_incompatible(tmp_block, flags)) - continue; + while (iter) { + tmp_block = rbtree_get_free_block(iter); - block = tmp_block; - break; + if (!block_incompatible(tmp_block, flags)) { + block = tmp_block; + break; + } + + iter = rb_prev(iter); } if (!block) @@ -667,7 +703,7 @@ get_maxblock(struct drm_buddy *mm, unsigned int order, } static struct drm_buddy_block * -alloc_from_freelist(struct drm_buddy *mm, +alloc_from_freetree(struct drm_buddy *mm, unsigned int order, unsigned long flags) { @@ -682,14 +718,18 @@ alloc_from_freelist(struct drm_buddy *mm, tmp = drm_buddy_block_order(block); } else { for (tmp = order; tmp <= mm->max_order; ++tmp) { + struct rb_node *iter = rb_last(&mm->free_tree[tmp]); struct drm_buddy_block *tmp_block; - list_for_each_entry_reverse(tmp_block, &mm->free_list[tmp], link) { - if (block_incompatible(tmp_block, flags)) - continue; + while (iter) { + tmp_block = rbtree_get_free_block(iter); - block = tmp_block; - break; + if (!block_incompatible(tmp_block, flags)) { + block = tmp_block; + break; + } + + iter = rb_prev(iter); } if (block) @@ -700,13 +740,9 @@ alloc_from_freelist(struct drm_buddy *mm, if (!block) { /* Fallback method */ for (tmp = order; tmp <= mm->max_order; ++tmp) { - if (!list_empty(&mm->free_list[tmp])) { - block = list_last_entry(&mm->free_list[tmp], - struct drm_buddy_block, - link); - if (block) - break; - } + block = rbtree_last_entry(mm, tmp); + if (block) + break; } if (!block) @@ -771,7 +807,7 @@ static int __alloc_range(struct drm_buddy *mm, if (contains(start, end, block_start, block_end)) { if (drm_buddy_block_is_free(block)) { - mark_allocated(block); + mark_allocated(mm, block); total_allocated += drm_buddy_block_size(mm, block); mm->avail -= drm_buddy_block_size(mm, block); if (drm_buddy_block_is_clear(block)) @@ -849,8 +885,8 @@ static int __alloc_contig_try_harder(struct drm_buddy *mm, { u64 rhs_offset, lhs_offset, lhs_size, filled; struct drm_buddy_block *block; - struct list_head *list; LIST_HEAD(blocks_lhs); + struct rb_node *iter; unsigned long pages; unsigned int order; u64 modify_size; @@ -862,11 +898,14 @@ static int __alloc_contig_try_harder(struct drm_buddy *mm, if (order == 0) return -ENOSPC; - list = &mm->free_list[order]; - if (list_empty(list)) + if (rbtree_is_empty(mm, order)) return -ENOSPC; - list_for_each_entry_reverse(block, list, link) { + iter = rb_last(&mm->free_tree[order]); + + while (iter) { + block = rbtree_get_free_block(iter); + /* Allocate blocks traversing RHS */ rhs_offset = drm_buddy_block_offset(block); err = __drm_buddy_alloc_range(mm, rhs_offset, size, @@ -891,6 +930,8 @@ static int __alloc_contig_try_harder(struct drm_buddy *mm, } /* Free blocks for the next iteration */ drm_buddy_free_list_internal(mm, blocks); + + iter = rb_prev(iter); } return -ENOSPC; @@ -976,7 +1017,7 @@ int drm_buddy_block_trim(struct drm_buddy *mm, list_add(&block->tmp_link, &dfs); err = __alloc_range(mm, &dfs, new_start, new_size, blocks, NULL); if (err) { - mark_allocated(block); + mark_allocated(mm, block); mm->avail -= drm_buddy_block_size(mm, block); if (drm_buddy_block_is_clear(block)) mm->clear_avail -= drm_buddy_block_size(mm, block); @@ -999,8 +1040,8 @@ __drm_buddy_alloc_blocks(struct drm_buddy *mm, return __drm_buddy_alloc_range_bias(mm, start, end, order, flags); else - /* Allocate from freelist */ - return alloc_from_freelist(mm, order, flags); + /* Allocate from freetree */ + return alloc_from_freetree(mm, order, flags); } /** @@ -1017,8 +1058,8 @@ __drm_buddy_alloc_blocks(struct drm_buddy *mm, * alloc_range_bias() called on range limitations, which traverses * the tree and returns the desired block. * - * alloc_from_freelist() called when *no* range restrictions - * are enforced, which picks the block from the freelist. + * alloc_from_freetree() called when *no* range restrictions + * are enforced, which picks the block from the freetree. * * Returns: * 0 on success, error code on failure. @@ -1120,7 +1161,7 @@ int drm_buddy_alloc_blocks(struct drm_buddy *mm, } } while (1); - mark_allocated(block); + mark_allocated(mm, block); mm->avail -= drm_buddy_block_size(mm, block); if (drm_buddy_block_is_clear(block)) mm->clear_avail -= drm_buddy_block_size(mm, block); @@ -1201,10 +1242,10 @@ void drm_buddy_print(struct drm_buddy *mm, struct drm_printer *p) mm->chunk_size >> 10, mm->size >> 20, mm->avail >> 20, mm->clear_avail >> 20); for (order = mm->max_order; order >= 0; order--) { - struct drm_buddy_block *block; + struct drm_buddy_block *block, *tmp; u64 count = 0, free; - list_for_each_entry(block, &mm->free_list[order], link) { + rbtree_postorder_for_each_entry_safe(block, tmp, &mm->free_tree[order], rb) { BUG_ON(!drm_buddy_block_is_free(block)); count++; } diff --git a/include/drm/drm_buddy.h b/include/drm/drm_buddy.h index 513837632b7d..9ee105d4309f 100644 --- a/include/drm/drm_buddy.h +++ b/include/drm/drm_buddy.h @@ -10,6 +10,7 @@ #include <linux/list.h> #include <linux/slab.h> #include <linux/sched.h> +#include <linux/rbtree.h> #include <drm/drm_print.h> @@ -53,7 +54,11 @@ struct drm_buddy_block { * a list, if so desired. As soon as the block is freed with * drm_buddy_free* ownership is given back to the mm. */ - struct list_head link; + union { + struct rb_node rb; + struct list_head link; + }; + struct list_head tmp_link; }; @@ -68,7 +73,7 @@ struct drm_buddy_block { */ struct drm_buddy { /* Maintain a free list for each order. */ - struct list_head *free_list; + struct rb_root *free_tree; /* * Maintain explicit binary tree(s) to track the allocation of the @@ -94,7 +99,7 @@ struct drm_buddy { }; static inline u64 -drm_buddy_block_offset(struct drm_buddy_block *block) +drm_buddy_block_offset(const struct drm_buddy_block *block) { return block->header & DRM_BUDDY_HEADER_OFFSET; } base-commit: a31c6c50da013dcd4de4889d402b47bae552a2e2 -- 2.34.1

1 month, 3 weeks

1
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[PATCH] drm/mediatek: Fix refcounting in mtk_drm_get_all_drm_priv

by Sjoerd Simons

dev_get_drvdata simply returns the driver data part of drm_dev, which has its lifetime bound to the drm_dev. So only drop the reference in the error paths, on success they will get dropped later. Cc: stable(a)vger.kernel.org Fixes: 9ba2556cef1df ("drm/mediatek: clean up driver data initialisation") Signed-off-by: Sjoerd Simons <sjoerd(a)collabora.com> --- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index 7841f59c52ee772dba3de416f410604f5f13eef2..c85fbecce9d6f0ade700e047e067ee7f9250f037 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -373,7 +373,7 @@ static int mtk_drm_match(struct device *dev, const void *data) static bool mtk_drm_get_all_drm_priv(struct device *dev) { struct mtk_drm_private *drm_priv = dev_get_drvdata(dev); - struct mtk_drm_private *all_drm_priv[MAX_CRTC]; + struct mtk_drm_private *all_drm_priv[MAX_CRTC] = { NULL, }; struct mtk_drm_private *temp_drm_priv; struct device_node *phandle = dev->parent->of_node; const struct of_device_id *of_id; @@ -399,16 +399,22 @@ static bool mtk_drm_get_all_drm_priv(struct device *dev) continue; temp_drm_priv = dev_get_drvdata(drm_dev); - put_device(drm_dev); - if (!temp_drm_priv) + if (!temp_drm_priv) { + put_device(drm_dev); continue; + } - if (temp_drm_priv->data->main_len) + if (temp_drm_priv->data->main_len) { all_drm_priv[CRTC_MAIN] = temp_drm_priv; - else if (temp_drm_priv->data->ext_len) + } else if (temp_drm_priv->data->ext_len) { all_drm_priv[CRTC_EXT] = temp_drm_priv; - else if (temp_drm_priv->data->third_len) + } else if (temp_drm_priv->data->third_len) { all_drm_priv[CRTC_THIRD] = temp_drm_priv; + } else { + dev_warn(drm_dev, "Could not determine crtc type"); + put_device(drm_dev); + continue; + } if (temp_drm_priv->mtk_drm_bound) cnt++; @@ -427,6 +433,10 @@ static bool mtk_drm_get_all_drm_priv(struct device *dev) return true; } + for (i = 0; i < MAX_CRTC; i++) + if (all_drm_priv[i]) + put_device(all_drm_priv[i]->dev); + return false; } --- base-commit: 22b5e8cde1db67c64b83fc0e4e1ab166cacff246 change-id: 20251002-mtk-drm-refcount-e0f718d9364a Best regards, -- Sjoerd Simons <sjoerd(a)collabora.com>

1 month, 3 weeks

3
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Request for Vendor Questionnaire/EOI Form

by Farahiyah

1 month, 3 weeks

1
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[PATCH] arm64: dts: rockchip: Fix broken tsadc pinctrl binding for rk3588

by Alexander Shiyan

There is no pinctrl "gpio" and "otpout" (probably designed as "output") handling in the tsadc driver. Let's use proper binding "default" and "sleep". Fixes: 32641b8ab1a5 ("arm64: dts: rockchip: add rk3588 thermal sensor") Cc: stable(a)vger.kernel.org Signed-off-by: Alexander Shiyan <eagle.alexander923(a)gmail.com> --- arch/arm64/boot/dts/rockchip/rk3588-base.dtsi | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi index a337f3fb8377..f141065eb69d 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi @@ -2667,9 +2667,9 @@ tsadc: tsadc@fec00000 { rockchip,hw-tshut-temp = <120000>; rockchip,hw-tshut-mode = <0>; /* tshut mode 0:CRU 1:GPIO */ rockchip,hw-tshut-polarity = <0>; /* tshut polarity 0:LOW 1:HIGH */ - pinctrl-0 = <&tsadc_gpio_func>; - pinctrl-1 = <&tsadc_shut>; - pinctrl-names = "gpio", "otpout"; + pinctrl-0 = <&tsadc_shut>; + pinctrl-1 = <&tsadc_gpio_func>; + pinctrl-names = "default", "sleep"; #thermal-sensor-cells = <1>; status = "disabled"; }; -- 2.39.1

1 month, 3 weeks

4
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[PATCH 6.6 0/7] 6.6.110-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 6.6.110 release. There are 7 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Sun, 05 Oct 2025 16:02:25 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.6.110-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.6.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 6.6.110-rc1 Srinivas Kandagatla <srinivas.kandagatla(a)oss.qualcomm.com> ASoC: qcom: audioreach: fix potential null pointer dereference Thadeu Lima de Souza Cascardo <cascardo(a)igalia.com> media: uvcvideo: Mark invalid entities with id UVC_INVALID_ENTITY_ID Larshin Sergey <Sergey.Larshin(a)kaspersky.com> media: rc: fix races with imon_disconnect() Duoming Zhou <duoming(a)zju.edu.cn> media: b2c2: Fix use-after-free causing by irq_check_work in flexcop_pci_remove Wang Haoran <haoranwangsec(a)gmail.com> scsi: target: target_core_configfs: Add length check to avoid buffer overflow Kees Cook <kees(a)kernel.org> gcc-plugins: Remove TODO_verify_il for GCC >= 16 Breno Leitao <leitao(a)debian.org> crypto: sha256 - fix crash at kexec ------------- Diffstat: Makefile | 4 +- drivers/media/pci/b2c2/flexcop-pci.c | 2 +- drivers/media/rc/imon.c | 27 +++++++++---- drivers/media/usb/uvc/uvc_driver.c | 73 ++++++++++++++++++++++------------- drivers/media/usb/uvc/uvcvideo.h | 2 + drivers/target/target_core_configfs.c | 2 +- include/crypto/sha256_base.h | 2 +- scripts/gcc-plugins/gcc-common.h | 7 ++++ sound/soc/qcom/qdsp6/topology.c | 4 +- 9 files changed, 82 insertions(+), 41 deletions(-)

1 month, 3 weeks

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[PATCH 6.16 00/14] 6.16.11-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 6.16.11 release. There are 14 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Sun, 05 Oct 2025 16:02:25 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.16.11-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.16.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 6.16.11-rc1 Srinivas Kandagatla <srinivas.kandagatla(a)oss.qualcomm.com> ASoC: qcom: audioreach: fix potential null pointer dereference Chandra Mohan Sundar <chandramohan.explore(a)gmail.com> media: stm32-csi: Fix dereference before NULL check Dikshita Agarwal <quic_dikshita(a)quicinc.com> media: iris: Fix memory leak by freeing untracked persist buffer Matvey Kovalev <matvey.kovalev(a)ispras.ru> wifi: ath11k: fix NULL dereference in ath11k_qmi_m3_load() Charan Teja Kalla <charan.kalla(a)oss.qualcomm.com> mm: swap: check for stable address space before operating on the VMA Thadeu Lima de Souza Cascardo <cascardo(a)igalia.com> media: uvcvideo: Mark invalid entities with id UVC_INVALID_ENTITY_ID Larshin Sergey <Sergey.Larshin(a)kaspersky.com> media: rc: fix races with imon_disconnect() Duoming Zhou <duoming(a)zju.edu.cn> media: tuner: xc5000: Fix use-after-free in xc5000_release Duoming Zhou <duoming(a)zju.edu.cn> media: i2c: tc358743: Fix use-after-free bugs caused by orphan timer in probe Duoming Zhou <duoming(a)zju.edu.cn> media: b2c2: Fix use-after-free causing by irq_check_work in flexcop_pci_remove Jeongjun Park <aha310510(a)gmail.com> ALSA: usb-audio: fix race condition to UAF in snd_usbmidi_free Wang Haoran <haoranwangsec(a)gmail.com> scsi: target: target_core_configfs: Add length check to avoid buffer overflow Kees Cook <kees(a)kernel.org> gcc-plugins: Remove TODO_verify_il for GCC >= 16 Yu Kuai <yukuai3(a)huawei.com> blk-mq: fix blk_mq_tags double free while nr_requests grown ------------- Diffstat: Makefile | 4 +- block/blk-mq-tag.c | 1 + drivers/media/i2c/tc358743.c | 4 +- drivers/media/pci/b2c2/flexcop-pci.c | 2 +- drivers/media/platform/qcom/iris/iris_buffer.c | 10 ++++ drivers/media/platform/st/stm32/stm32-csi.c | 4 +- drivers/media/rc/imon.c | 27 +++++++--- drivers/media/tuners/xc5000.c | 2 +- drivers/media/usb/uvc/uvc_driver.c | 73 ++++++++++++++++---------- drivers/media/usb/uvc/uvcvideo.h | 2 + drivers/net/wireless/ath/ath11k/qmi.c | 2 +- drivers/target/target_core_configfs.c | 2 +- mm/swapfile.c | 3 ++ scripts/gcc-plugins/gcc-common.h | 7 +++ sound/soc/qcom/qdsp6/topology.c | 4 +- sound/usb/midi.c | 9 ++-- 16 files changed, 105 insertions(+), 51 deletions(-)

1 month, 3 weeks

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[PATCH 6.17 00/15] 6.17.1-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 6.17.1 release. There are 15 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Sun, 05 Oct 2025 16:02:25 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.17.1-rc1… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.17.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 6.17.1-rc1 Srinivas Kandagatla <srinivas.kandagatla(a)oss.qualcomm.com> ASoC: qcom: audioreach: fix potential null pointer dereference Chandra Mohan Sundar <chandramohan.explore(a)gmail.com> media: stm32-csi: Fix dereference before NULL check Dikshita Agarwal <quic_dikshita(a)quicinc.com> media: iris: Fix memory leak by freeing untracked persist buffer Matvey Kovalev <matvey.kovalev(a)ispras.ru> wifi: ath11k: fix NULL dereference in ath11k_qmi_m3_load() Charan Teja Kalla <charan.kalla(a)oss.qualcomm.com> mm: swap: check for stable address space before operating on the VMA Thadeu Lima de Souza Cascardo <cascardo(a)igalia.com> media: uvcvideo: Mark invalid entities with id UVC_INVALID_ENTITY_ID Larshin Sergey <Sergey.Larshin(a)kaspersky.com> media: rc: fix races with imon_disconnect() Duoming Zhou <duoming(a)zju.edu.cn> media: tuner: xc5000: Fix use-after-free in xc5000_release Duoming Zhou <duoming(a)zju.edu.cn> media: i2c: tc358743: Fix use-after-free bugs caused by orphan timer in probe Duoming Zhou <duoming(a)zju.edu.cn> media: b2c2: Fix use-after-free causing by irq_check_work in flexcop_pci_remove Fedor Pchelkin <pchelkin(a)ispras.ru> wifi: rtw89: fix use-after-free in rtw89_core_tx_kick_off_and_wait() Jeongjun Park <aha310510(a)gmail.com> ALSA: usb-audio: fix race condition to UAF in snd_usbmidi_free Wang Haoran <haoranwangsec(a)gmail.com> scsi: target: target_core_configfs: Add length check to avoid buffer overflow Kees Cook <kees(a)kernel.org> gcc-plugins: Remove TODO_verify_il for GCC >= 16 Yu Kuai <yukuai3(a)huawei.com> blk-mq: fix blk_mq_tags double free while nr_requests grown ------------- Diffstat: Makefile | 4 +- block/blk-mq-tag.c | 1 + drivers/media/i2c/tc358743.c | 4 +- drivers/media/pci/b2c2/flexcop-pci.c | 2 +- drivers/media/platform/qcom/iris/iris_buffer.c | 10 ++++ drivers/media/platform/st/stm32/stm32-csi.c | 4 +- drivers/media/rc/imon.c | 27 +++++++--- drivers/media/tuners/xc5000.c | 2 +- drivers/media/usb/uvc/uvc_driver.c | 73 ++++++++++++++++---------- drivers/media/usb/uvc/uvcvideo.h | 2 + drivers/net/wireless/ath/ath11k/qmi.c | 2 +- drivers/net/wireless/realtek/rtw89/core.c | 30 ++++++++--- drivers/net/wireless/realtek/rtw89/core.h | 35 +++++++++++- drivers/net/wireless/realtek/rtw89/pci.c | 3 +- drivers/net/wireless/realtek/rtw89/ser.c | 2 + drivers/target/target_core_configfs.c | 2 +- mm/swapfile.c | 3 ++ scripts/gcc-plugins/gcc-common.h | 7 +++ sound/soc/qcom/qdsp6/topology.c | 4 +- sound/usb/midi.c | 9 ++-- 20 files changed, 166 insertions(+), 60 deletions(-)

1 month, 3 weeks

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[STABLE 6.1.y] [PATCH] KVM: arm64: Fix softirq masking in FPSIMD register saving sequence

by Will Deacon

Stable commit 8f4dc4e54eed ("KVM: arm64: Fix kernel BUG() due to bad backport of FPSIMD/SVE/SME fix") fixed a kernel BUG() caused by a bad backport of upstream commit fbc7e61195e2 ("KVM: arm64: Unconditionally save+flush host FPSIMD/SVE/SME state") by ensuring that softirqs are disabled/enabled across the fpsimd register save operation. Unfortunately, although this fixes the original issue, it can now lead to deadlock when re-enabling softirqs causes pending softirqs to be handled with locks already held: | BUG: spinlock recursion on CPU#7, CPU 3/KVM/57616 | lock: 0xffff3045ef850240, .magic: dead4ead, .owner: CPU 3/KVM/57616, .owner_cpu: 7 | CPU: 7 PID: 57616 Comm: CPU 3/KVM Tainted: G O 6.1.152 #1 | Hardware name: SoftIron SoftIron Platform Mainboard/SoftIron Platform Mainboard, BIOS 1.31 May 11 2023 | Call trace: | dump_backtrace+0xe4/0x110 | show_stack+0x20/0x30 | dump_stack_lvl+0x6c/0x88 | dump_stack+0x18/0x34 | spin_dump+0x98/0xac | do_raw_spin_lock+0x70/0x128 | _raw_spin_lock+0x18/0x28 | raw_spin_rq_lock_nested+0x18/0x28 | update_blocked_averages+0x70/0x550 | run_rebalance_domains+0x50/0x70 | handle_softirqs+0x198/0x328 | __do_softirq+0x1c/0x28 | ____do_softirq+0x18/0x28 | call_on_irq_stack+0x30/0x48 | do_softirq_own_stack+0x24/0x30 | do_softirq+0x74/0x90 | __local_bh_enable_ip+0x64/0x80 | fpsimd_save_and_flush_cpu_state+0x5c/0x68 | kvm_arch_vcpu_put_fp+0x4c/0x88 | kvm_arch_vcpu_put+0x28/0x88 | kvm_sched_out+0x38/0x58 | __schedule+0x55c/0x6c8 | schedule+0x60/0xa8 Take a tiny step towards the upstream fix in 9b19700e623f ("arm64: fpsimd: Drop unneeded 'busy' flag") by additionally disabling hardirqs while saving the fpsimd registers. Cc: Ard Biesheuvel <ardb(a)kernel.org> Cc: Lee Jones <lee(a)kernel.org> Cc: Sasha Levin <sashal(a)kernel.org> Cc: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Cc: <stable(a)vger.kernel.org> # 6.1.y Fixes: 8f4dc4e54eed ("KVM: arm64: Fix kernel BUG() due to bad backport of FPSIMD/SVE/SME fix") Reported-by: Kenneth Van Alstyne <kvanals(a)kvanals.org> Link: https://lore.kernel.org/r/010001999bae0958-4d80d25d-8dda-4006-a6b9-798f3e77… Signed-off-by: Will Deacon <will(a)kernel.org> --- arch/arm64/kernel/fpsimd.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index bc42163a7fd1..62780cf901dc 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -1848,13 +1848,17 @@ static void fpsimd_flush_cpu_state(void) */ void fpsimd_save_and_flush_cpu_state(void) { + unsigned long flags; + if (!system_supports_fpsimd()) return; WARN_ON(preemptible()); - get_cpu_fpsimd_context(); + local_irq_save(flags); + __get_cpu_fpsimd_context(); fpsimd_save(); fpsimd_flush_cpu_state(); - put_cpu_fpsimd_context(); + __put_cpu_fpsimd_context(); + local_irq_restore(flags); } #ifdef CONFIG_KERNEL_MODE_NEON -- 2.51.0.618.g983fd99d29-goog

1 month, 3 weeks

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[STABLE 6.6.y] [PATCH] KVM: arm64: Fix softirq masking in FPSIMD register saving sequence

by Will Deacon

Stable commit 28b82be094e2 ("KVM: arm64: Fix kernel BUG() due to bad backport of FPSIMD/SVE/SME fix") fixed a kernel BUG() caused by a bad backport of upstream commit fbc7e61195e2 ("KVM: arm64: Unconditionally save+flush host FPSIMD/SVE/SME state") by ensuring that softirqs are disabled/enabled across the fpsimd register save operation. Unfortunately, although this fixes the original issue, it can now lead to deadlock when re-enabling softirqs causes pending softirqs to be handled with locks already held: | BUG: spinlock recursion on CPU#7, CPU 3/KVM/57616 | lock: 0xffff3045ef850240, .magic: dead4ead, .owner: CPU 3/KVM/57616, .owner_cpu: 7 | CPU: 7 PID: 57616 Comm: CPU 3/KVM Tainted: G O 6.1.152 #1 | Hardware name: SoftIron SoftIron Platform Mainboard/SoftIron Platform Mainboard, BIOS 1.31 May 11 2023 | Call trace: | dump_backtrace+0xe4/0x110 | show_stack+0x20/0x30 | dump_stack_lvl+0x6c/0x88 | dump_stack+0x18/0x34 | spin_dump+0x98/0xac | do_raw_spin_lock+0x70/0x128 | _raw_spin_lock+0x18/0x28 | raw_spin_rq_lock_nested+0x18/0x28 | update_blocked_averages+0x70/0x550 | run_rebalance_domains+0x50/0x70 | handle_softirqs+0x198/0x328 | __do_softirq+0x1c/0x28 | ____do_softirq+0x18/0x28 | call_on_irq_stack+0x30/0x48 | do_softirq_own_stack+0x24/0x30 | do_softirq+0x74/0x90 | __local_bh_enable_ip+0x64/0x80 | fpsimd_save_and_flush_cpu_state+0x5c/0x68 | kvm_arch_vcpu_put_fp+0x4c/0x88 | kvm_arch_vcpu_put+0x28/0x88 | kvm_sched_out+0x38/0x58 | __schedule+0x55c/0x6c8 | schedule+0x60/0xa8 Take a tiny step towards the upstream fix in 9b19700e623f ("arm64: fpsimd: Drop unneeded 'busy' flag") by additionally disabling hardirqs while saving the fpsimd registers. Cc: Ard Biesheuvel <ardb(a)kernel.org> Cc: Lee Jones <lee(a)kernel.org> Cc: Sasha Levin <sashal(a)kernel.org> Cc: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Cc: <stable(a)vger.kernel.org> # 6.6.y Fixes: 28b82be094e2 ("KVM: arm64: Fix kernel BUG() due to bad backport of FPSIMD/SVE/SME fix") Reported-by: Kenneth Van Alstyne <kvanals(a)kvanals.org> Link: https://lore.kernel.org/r/010001999bae0958-4d80d25d-8dda-4006-a6b9-798f3e77… Signed-off-by: Will Deacon <will(a)kernel.org> --- arch/arm64/kernel/fpsimd.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index d0d836448a76..83827384982e 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -1873,13 +1873,17 @@ static void fpsimd_flush_cpu_state(void) */ void fpsimd_save_and_flush_cpu_state(void) { + unsigned long flags; + if (!system_supports_fpsimd()) return; WARN_ON(preemptible()); - get_cpu_fpsimd_context(); + local_irq_save(flags); + __get_cpu_fpsimd_context(); fpsimd_save(); fpsimd_flush_cpu_state(); - put_cpu_fpsimd_context(); + __put_cpu_fpsimd_context(); + local_irq_restore(flags); } #ifdef CONFIG_KERNEL_MODE_NEON -- 2.51.0.618.g983fd99d29-goog

1 month, 3 weeks

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Greetings,

by project05us project05us

Greetings, I am an Investment Broker with high profile investment company based in United Kingdom. We provide HARD LOAN FUNDING for any VIABLE project/business seeking Financing. ** Loan Interest Rate: 2% annually. ** Moratorium / Grace Period: (12 Months Grace Period) / One (1) Year. ** Loan Funding Maximum Duration: ( 10 Years ). Let us know if you have a viable start up or already existing business/project that requires funding or expansion . Kindly reply and forward your project / business plan for our management review. Thank you Very truly yours Ahmed Khalid. Kindly forward your response via this Email. ahmedkhalid1us(a)yahoo.com

1 month, 3 weeks

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Original T shirts!

by Spencer

1 month, 3 weeks

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[PATCH 1/2] soc: amlogic: canvas: fix device leak on lookup

by Johan Hovold

Make sure to drop the reference taken to the canvas platform device when looking up its driver data. Note that holding a reference to a device does not prevent its driver data from going away so there is no point in keeping the reference. Also note that commit 28f851e6afa8 ("soc: amlogic: canvas: add missing put_device() call in meson_canvas_get()") fixed the leak in a lookup error path, but the reference is still leaking on success. Fixes: d4983983d987 ("soc: amlogic: add meson-canvas driver") Cc: stable(a)vger.kernel.org # 4.20: 28f851e6afa8 Cc: Yu Kuai <yukuai3(a)huawei.com> Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/soc/amlogic/meson-canvas.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/soc/amlogic/meson-canvas.c b/drivers/soc/amlogic/meson-canvas.c index b6e06c4d2117..0711088da5dc 100644 --- a/drivers/soc/amlogic/meson-canvas.c +++ b/drivers/soc/amlogic/meson-canvas.c @@ -73,10 +73,9 @@ struct meson_canvas *meson_canvas_get(struct device *dev) * current state, this driver probe cannot return -EPROBE_DEFER */ canvas = dev_get_drvdata(&canvas_pdev->dev); - if (!canvas) { - put_device(&canvas_pdev->dev); + put_device(&canvas_pdev->dev); + if (!canvas) return ERR_PTR(-EINVAL); - } return canvas; } -- 2.49.1

1 month, 3 weeks

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[PATCH 0/2] PCI: Fix ACS enablement for Root Ports in DT platforms

by Manivannan Sadhasivam via B4 Relay

Hi, This series fixes the long standing issue with ACS in DT platforms. There are two fixes in this series, both fixing independent issues on their own, but both are needed to properly enable ACS on DT platforms (well, patch 1 is only needed for Juno board, but that was a blocker for patch 2, more below...). Issue(s) background =================== Back in 2024, Xingang Wang first noted a failure in attaching the HiSilicon SEC device to QEMU ARM64 pci-root-port device [1]. He then tracked down the issue to ACS not being enabled for the QEMU Root Port device and he proposed a patch to fix it [2]. Once the patch got applied, people reported PCIe issues with linux-next on the ARM Juno Development boards, where they saw failure in enumerating the endpoint devices [3][4]. So soon, the patch got dropped, but the actual issue with the ARM Juno boards was left behind. Fast forward to 2024, Pavan resubmitted the same fix [5] for his own usecase, hoping that someone in the community would fix the issue with ARM Juno boards. But the patch was rightly rejected, as a patch that was known to cause issues should not be merged to the kernel. But again, no one investigated the Juno issue and it was left behind again. Now it ended up in my plate and I managed to track down the issue with the help of Naresh who got access to the Juno boards in LKFT. The Juno issue is with the PCIe switch from Microsemi/IDT, which triggers ACS Source Validation error on Completions received for the Configuration Read Request from a device connected to the downstream port that has not yet captured the PCIe bus number. As per the PCIe spec r6.0 sec 2.2.6.2, "Functions must capture the Bus and Device Numbers supplied with all Type 0 Configuration Write Requests completed by the Function and supply these numbers in the Bus and Device Number fields of the Requester ID for all Requests". So during the first Configuration Read Request issued by the switch downstream port during enumeration (for reading Vendor ID), Bus and Device numbers will be unknown to the device. So it responds to the Read Request with Completion having Bus and Device number as 0. The switch interprets the Completion as an ACS Source Validation error and drops the completion, leading to the failure in detecting the endpoint device. Though the PCIe spec r6.0, sec 6.12.1.1, states that "Completions are never affected by ACS Source Validation". This behavior is in violation of the spec. This issue was already found and addressed with a quirk for a different device from Microsemi with 'commit, aa667c6408d2 ("PCI: Workaround IDT switch ACS Source Validation erratum")'. Apparently, this issue seems to be documented in the erratum #36 of IDT 89H32H8G3-YC, which is not publicly available. Solution for Juno issue ======================= To fix this issue, I've extended the quirk to the Device ID of the switch found in Juno R2 boards. I believe the same switch is also present in Juno R1 board as well. With Patch 1, the Juno R2 boards can now detect the endpoints even with ACS enabled for the Switch downstream ports. Finally, I added patch 2 that properly enables ACS for all the PCI devices on DT platforms. It should be noted that even without patch 2 which enables ACS for the Root Port, the Juno boards were failing since 'commit, bcb81ac6ae3c ("iommu: Get DT/ACPI parsing into the proper probe path")' as reported in LKFT [6]. I believe, this commit made sure pci_request_acs() gets called before the enumeration of the switch downstream ports. The LKFT team ended up disabling ACS using cmdline param 'pci=config_acs=000000@pci:0:0'. So I added the above mentioned commit as a Fixes tag for patch 1. Also, to mitigate this issue, one could enumerate all the PCIe devices in bootloader without enabling ACS (as also noted by Robin in the LKFT thread). This will make sure that the endpoint device has a valid bus number when it responds to the first Configuration Read Request from the switch downstream port. So the ACS Source Validation error doesn't get triggered. Solution for ACS issue ====================== To fix this issue, I've kept the patch from Xingang as is (with rewording of the patch subject/description). This patch moves the pci_request_acs() call to devm_of_pci_bridge_init(), which gets called during the host bridge registration. This makes sure that the 'pci_acs_enable' flag set by pci_request_acs() is getting set before the enumeration of the Root Port device. So now, ACS will be enabled for all ACS capable devices of DT platforms. [1] https://lore.kernel.org/all/038397a6-57e2-b6fc-6e1c-7c03b7be9d96@huawei.com [2] https://lore.kernel.org/all/1621566204-37456-1-git-send-email-wangxingang5@… [3] https://lore.kernel.org/all/01314d70-41e6-70f9-e496-84091948701a@samsung.com [4] https://lore.kernel.org/all/CADYN=9JWU3CMLzMEcD5MSQGnaLyDRSKc5SofBFHUax6YuT… [5] https://lore.kernel.org/linux-pci/20241107-pci_acs_fix-v1-1-185a2462a571@qu… [6] https://lists.linaro.org/archives/list/lkft-triage@lists.linaro.org/message… Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam(a)oss.qualcomm.com> --- Manivannan Sadhasivam (1): PCI: Extend pci_idt_bus_quirk() for IDT switch with Device ID 0x8090 Xingang Wang (1): iommu/of: Call pci_request_acs() before enumerating the Root Port device drivers/iommu/of_iommu.c | 1 - drivers/pci/of.c | 8 +++++++- drivers/pci/probe.c | 2 +- 3 files changed, 8 insertions(+), 3 deletions(-) --- base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585 change-id: 20250910-pci-acs-cb4fa3983a2c Best regards, -- Manivannan Sadhasivam <manivannan.sadhasivam(a)oss.qualcomm.com>

1 month, 3 weeks

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[PATCH v7 1/3] drm/buddy: Optimize free block management with RB tree

by Arunpravin Paneer Selvam

Replace the freelist (O(n)) used for free block management with a red-black tree, providing more efficient O(log n) search, insert, and delete operations. This improves scalability and performance when managing large numbers of free blocks per order (e.g., hundreds or thousands). In the VK-CTS memory stress subtest, the buddy manager merges fragmented memory and inserts freed blocks into the freelist. Since freelist insertion is O(n), this becomes a bottleneck as fragmentation increases. Benchmarking shows list_insert_sorted() consumes ~52.69% CPU with the freelist, compared to just 0.03% with the RB tree (rbtree_insert.isra.0), despite performing the same sorted insert. This also improves performance in heavily fragmented workloads, such as games or graphics tests that stress memory. As the buddy allocator evolves with new features such as clear-page tracking, the resulting fragmentation and complexity have grown. These RB-tree based design changes are introduced to address that growth and ensure the allocator continues to perform efficiently under fragmented conditions. The RB tree implementation with separate clear/dirty trees provides: - O(n log n) aggregate complexity for all operations instead of O(n^2) - Elimination of soft lockups and system instability - Improved code maintainability and clarity - Better scalability for large memory systems - Predictable performance under fragmentation v3(Matthew): - Remove RB_EMPTY_NODE check in force_merge function. - Rename rb for loop macros to have less generic names and move to .c file. - Make the rb node rb and link field as union. v4(Jani Nikula): - The kernel-doc comment should be "/**" - Move all the rbtree macros to rbtree.h and add parens to ensure correct precedence. v5: - Remove the inline in a .c file (Jani Nikula). v6(Peter Zijlstra): - Add rb_add() function replacing the existing rbtree_insert() code. v7: - A full walk iteration in rbtree is slower than the list (Peter Zijlstra). - The existing rbtree_postorder_for_each_entry_safe macro should be used in scenarios where traversal order is not a critical factor (Christian). Cc: stable(a)vger.kernel.org Fixes: a68c7eaa7a8f ("drm/amdgpu: Enable clear page functionality") Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam(a)amd.com> --- drivers/gpu/drm/drm_buddy.c | 188 ++++++++++++++++++++++-------------- include/drm/drm_buddy.h | 11 ++- 2 files changed, 124 insertions(+), 75 deletions(-) diff --git a/drivers/gpu/drm/drm_buddy.c b/drivers/gpu/drm/drm_buddy.c index a94061f373de..67aa67229cc3 100644 --- a/drivers/gpu/drm/drm_buddy.c +++ b/drivers/gpu/drm/drm_buddy.c @@ -14,6 +14,8 @@ static struct kmem_cache *slab_blocks; +#define rbtree_get_free_block(node) rb_entry((node), struct drm_buddy_block, rb) + static struct drm_buddy_block *drm_block_alloc(struct drm_buddy *mm, struct drm_buddy_block *parent, unsigned int order, @@ -31,6 +33,8 @@ static struct drm_buddy_block *drm_block_alloc(struct drm_buddy *mm, block->header |= order; block->parent = parent; + RB_CLEAR_NODE(&block->rb); + BUG_ON(block->header & DRM_BUDDY_HEADER_UNUSED); return block; } @@ -41,23 +45,49 @@ static void drm_block_free(struct drm_buddy *mm, kmem_cache_free(slab_blocks, block); } -static void list_insert_sorted(struct drm_buddy *mm, - struct drm_buddy_block *block) +static bool drm_buddy_block_offset_less(const struct drm_buddy_block *block, + const struct drm_buddy_block *node) { - struct drm_buddy_block *node; - struct list_head *head; + return drm_buddy_block_offset(block) < drm_buddy_block_offset(node); +} - head = &mm->free_list[drm_buddy_block_order(block)]; - if (list_empty(head)) { - list_add(&block->link, head); - return; - } +static bool rbtree_block_offset_less(struct rb_node *block, + const struct rb_node *node) +{ + return drm_buddy_block_offset_less(rbtree_get_free_block(block), + rbtree_get_free_block(node)); +} - list_for_each_entry(node, head, link) - if (drm_buddy_block_offset(block) < drm_buddy_block_offset(node)) - break; +static void rbtree_insert(struct drm_buddy *mm, + struct drm_buddy_block *block) +{ + rb_add(&block->rb, + &mm->free_tree[drm_buddy_block_order(block)], + rbtree_block_offset_less); +} + +static void rbtree_remove(struct drm_buddy *mm, + struct drm_buddy_block *block) +{ + struct rb_root *root; + + root = &mm->free_tree[drm_buddy_block_order(block)]; + rb_erase(&block->rb, root); - __list_add(&block->link, node->link.prev, &node->link); + RB_CLEAR_NODE(&block->rb); +} + +static struct drm_buddy_block * +rbtree_last_entry(struct drm_buddy *mm, unsigned int order) +{ + struct rb_node *node = rb_last(&mm->free_tree[order]); + + return node ? rb_entry(node, struct drm_buddy_block, rb) : NULL; +} + +static bool rbtree_is_empty(struct drm_buddy *mm, unsigned int order) +{ + return RB_EMPTY_ROOT(&mm->free_tree[order]); } static void clear_reset(struct drm_buddy_block *block) @@ -70,12 +100,13 @@ static void mark_cleared(struct drm_buddy_block *block) block->header |= DRM_BUDDY_HEADER_CLEAR; } -static void mark_allocated(struct drm_buddy_block *block) +static void mark_allocated(struct drm_buddy *mm, + struct drm_buddy_block *block) { block->header &= ~DRM_BUDDY_HEADER_STATE; block->header |= DRM_BUDDY_ALLOCATED; - list_del(&block->link); + rbtree_remove(mm, block); } static void mark_free(struct drm_buddy *mm, @@ -84,15 +115,16 @@ static void mark_free(struct drm_buddy *mm, block->header &= ~DRM_BUDDY_HEADER_STATE; block->header |= DRM_BUDDY_FREE; - list_insert_sorted(mm, block); + rbtree_insert(mm, block); } -static void mark_split(struct drm_buddy_block *block) +static void mark_split(struct drm_buddy *mm, + struct drm_buddy_block *block) { block->header &= ~DRM_BUDDY_HEADER_STATE; block->header |= DRM_BUDDY_SPLIT; - list_del(&block->link); + rbtree_remove(mm, block); } static inline bool overlaps(u64 s1, u64 e1, u64 s2, u64 e2) @@ -148,7 +180,7 @@ static unsigned int __drm_buddy_free(struct drm_buddy *mm, mark_cleared(parent); } - list_del(&buddy->link); + rbtree_remove(mm, buddy); if (force_merge && drm_buddy_block_is_clear(buddy)) mm->clear_avail -= drm_buddy_block_size(mm, buddy); @@ -179,13 +211,19 @@ static int __force_merge(struct drm_buddy *mm, return -EINVAL; for (i = min_order - 1; i >= 0; i--) { - struct drm_buddy_block *block, *prev; + struct rb_root *root = &mm->free_tree[i]; + struct rb_node *iter; + + iter = rb_last(root); - list_for_each_entry_safe_reverse(block, prev, &mm->free_list[i], link) { - struct drm_buddy_block *buddy; + while (iter) { + struct drm_buddy_block *block, *buddy; u64 block_start, block_end; - if (!block->parent) + block = rbtree_get_free_block(iter); + iter = rb_prev(iter); + + if (!block || !block->parent) continue; block_start = drm_buddy_block_offset(block); @@ -201,15 +239,10 @@ static int __force_merge(struct drm_buddy *mm, WARN_ON(drm_buddy_block_is_clear(block) == drm_buddy_block_is_clear(buddy)); - /* - * If the prev block is same as buddy, don't access the - * block in the next iteration as we would free the - * buddy block as part of the free function. - */ - if (prev == buddy) - prev = list_prev_entry(prev, link); + if (iter == &buddy->rb) + iter = rb_prev(iter); - list_del(&block->link); + rbtree_remove(mm, block); if (drm_buddy_block_is_clear(block)) mm->clear_avail -= drm_buddy_block_size(mm, block); @@ -258,14 +291,14 @@ int drm_buddy_init(struct drm_buddy *mm, u64 size, u64 chunk_size) BUG_ON(mm->max_order > DRM_BUDDY_MAX_ORDER); - mm->free_list = kmalloc_array(mm->max_order + 1, - sizeof(struct list_head), + mm->free_tree = kmalloc_array(mm->max_order + 1, + sizeof(struct rb_root), GFP_KERNEL); - if (!mm->free_list) + if (!mm->free_tree) return -ENOMEM; for (i = 0; i <= mm->max_order; ++i) - INIT_LIST_HEAD(&mm->free_list[i]); + mm->free_tree[i] = RB_ROOT; mm->n_roots = hweight64(size); @@ -273,7 +306,7 @@ int drm_buddy_init(struct drm_buddy *mm, u64 size, u64 chunk_size) sizeof(struct drm_buddy_block *), GFP_KERNEL); if (!mm->roots) - goto out_free_list; + goto out_free_tree; offset = 0; i = 0; @@ -312,8 +345,8 @@ int drm_buddy_init(struct drm_buddy *mm, u64 size, u64 chunk_size) while (i--) drm_block_free(mm, mm->roots[i]); kfree(mm->roots); -out_free_list: - kfree(mm->free_list); +out_free_tree: + kfree(mm->free_tree); return -ENOMEM; } EXPORT_SYMBOL(drm_buddy_init); @@ -323,7 +356,7 @@ EXPORT_SYMBOL(drm_buddy_init); * * @mm: DRM buddy manager to free * - * Cleanup memory manager resources and the freelist + * Cleanup memory manager resources and the freetree */ void drm_buddy_fini(struct drm_buddy *mm) { @@ -350,7 +383,7 @@ void drm_buddy_fini(struct drm_buddy *mm) WARN_ON(mm->avail != mm->size); kfree(mm->roots); - kfree(mm->free_list); + kfree(mm->free_tree); } EXPORT_SYMBOL(drm_buddy_fini); @@ -383,7 +416,7 @@ static int split_block(struct drm_buddy *mm, clear_reset(block); } - mark_split(block); + mark_split(mm, block); return 0; } @@ -412,7 +445,7 @@ EXPORT_SYMBOL(drm_get_buddy); * @is_clear: blocks clear state * * Reset the clear state based on @is_clear value for each block - * in the freelist. + * in the freetree. */ void drm_buddy_reset_clear(struct drm_buddy *mm, bool is_clear) { @@ -431,9 +464,9 @@ void drm_buddy_reset_clear(struct drm_buddy *mm, bool is_clear) } for (i = 0; i <= mm->max_order; ++i) { - struct drm_buddy_block *block; + struct drm_buddy_block *block, *tmp; - list_for_each_entry_reverse(block, &mm->free_list[i], link) { + rbtree_postorder_for_each_entry_safe(block, tmp, &mm->free_tree[i], rb) { if (is_clear != drm_buddy_block_is_clear(block)) { if (is_clear) { mark_cleared(block); @@ -639,14 +672,18 @@ get_maxblock(struct drm_buddy *mm, unsigned int order, unsigned int i; for (i = order; i <= mm->max_order; ++i) { + struct rb_node *iter = rb_last(&mm->free_tree[i]); struct drm_buddy_block *tmp_block; - list_for_each_entry_reverse(tmp_block, &mm->free_list[i], link) { - if (block_incompatible(tmp_block, flags)) - continue; + while (iter) { + tmp_block = rbtree_get_free_block(iter); - block = tmp_block; - break; + if (!block_incompatible(tmp_block, flags)) { + block = tmp_block; + break; + } + + iter = rb_prev(iter); } if (!block) @@ -667,7 +704,7 @@ get_maxblock(struct drm_buddy *mm, unsigned int order, } static struct drm_buddy_block * -alloc_from_freelist(struct drm_buddy *mm, +alloc_from_freetree(struct drm_buddy *mm, unsigned int order, unsigned long flags) { @@ -682,14 +719,18 @@ alloc_from_freelist(struct drm_buddy *mm, tmp = drm_buddy_block_order(block); } else { for (tmp = order; tmp <= mm->max_order; ++tmp) { + struct rb_node *iter = rb_last(&mm->free_tree[tmp]); struct drm_buddy_block *tmp_block; - list_for_each_entry_reverse(tmp_block, &mm->free_list[tmp], link) { - if (block_incompatible(tmp_block, flags)) - continue; + while (iter) { + tmp_block = rbtree_get_free_block(iter); - block = tmp_block; - break; + if (!block_incompatible(tmp_block, flags)) { + block = tmp_block; + break; + } + + iter = rb_prev(iter); } if (block) @@ -700,10 +741,8 @@ alloc_from_freelist(struct drm_buddy *mm, if (!block) { /* Fallback method */ for (tmp = order; tmp <= mm->max_order; ++tmp) { - if (!list_empty(&mm->free_list[tmp])) { - block = list_last_entry(&mm->free_list[tmp], - struct drm_buddy_block, - link); + if (!rbtree_is_empty(mm, tmp)) { + block = rbtree_last_entry(mm, tmp); if (block) break; } @@ -771,7 +810,7 @@ static int __alloc_range(struct drm_buddy *mm, if (contains(start, end, block_start, block_end)) { if (drm_buddy_block_is_free(block)) { - mark_allocated(block); + mark_allocated(mm, block); total_allocated += drm_buddy_block_size(mm, block); mm->avail -= drm_buddy_block_size(mm, block); if (drm_buddy_block_is_clear(block)) @@ -849,8 +888,8 @@ static int __alloc_contig_try_harder(struct drm_buddy *mm, { u64 rhs_offset, lhs_offset, lhs_size, filled; struct drm_buddy_block *block; - struct list_head *list; LIST_HEAD(blocks_lhs); + struct rb_node *iter; unsigned long pages; unsigned int order; u64 modify_size; @@ -862,11 +901,14 @@ static int __alloc_contig_try_harder(struct drm_buddy *mm, if (order == 0) return -ENOSPC; - list = &mm->free_list[order]; - if (list_empty(list)) + if (rbtree_is_empty(mm, order)) return -ENOSPC; - list_for_each_entry_reverse(block, list, link) { + iter = rb_last(&mm->free_tree[order]); + + while (iter) { + block = rbtree_get_free_block(iter); + /* Allocate blocks traversing RHS */ rhs_offset = drm_buddy_block_offset(block); err = __drm_buddy_alloc_range(mm, rhs_offset, size, @@ -891,6 +933,8 @@ static int __alloc_contig_try_harder(struct drm_buddy *mm, } /* Free blocks for the next iteration */ drm_buddy_free_list_internal(mm, blocks); + + iter = rb_prev(iter); } return -ENOSPC; @@ -976,7 +1020,7 @@ int drm_buddy_block_trim(struct drm_buddy *mm, list_add(&block->tmp_link, &dfs); err = __alloc_range(mm, &dfs, new_start, new_size, blocks, NULL); if (err) { - mark_allocated(block); + mark_allocated(mm, block); mm->avail -= drm_buddy_block_size(mm, block); if (drm_buddy_block_is_clear(block)) mm->clear_avail -= drm_buddy_block_size(mm, block); @@ -999,8 +1043,8 @@ __drm_buddy_alloc_blocks(struct drm_buddy *mm, return __drm_buddy_alloc_range_bias(mm, start, end, order, flags); else - /* Allocate from freelist */ - return alloc_from_freelist(mm, order, flags); + /* Allocate from freetree */ + return alloc_from_freetree(mm, order, flags); } /** @@ -1017,8 +1061,8 @@ __drm_buddy_alloc_blocks(struct drm_buddy *mm, * alloc_range_bias() called on range limitations, which traverses * the tree and returns the desired block. * - * alloc_from_freelist() called when *no* range restrictions - * are enforced, which picks the block from the freelist. + * alloc_from_freetree() called when *no* range restrictions + * are enforced, which picks the block from the freetree. * * Returns: * 0 on success, error code on failure. @@ -1120,7 +1164,7 @@ int drm_buddy_alloc_blocks(struct drm_buddy *mm, } } while (1); - mark_allocated(block); + mark_allocated(mm, block); mm->avail -= drm_buddy_block_size(mm, block); if (drm_buddy_block_is_clear(block)) mm->clear_avail -= drm_buddy_block_size(mm, block); @@ -1201,10 +1245,10 @@ void drm_buddy_print(struct drm_buddy *mm, struct drm_printer *p) mm->chunk_size >> 10, mm->size >> 20, mm->avail >> 20, mm->clear_avail >> 20); for (order = mm->max_order; order >= 0; order--) { - struct drm_buddy_block *block; + struct drm_buddy_block *block, *tmp; u64 count = 0, free; - list_for_each_entry(block, &mm->free_list[order], link) { + rbtree_postorder_for_each_entry_safe(block, tmp, &mm->free_tree[order], rb) { BUG_ON(!drm_buddy_block_is_free(block)); count++; } diff --git a/include/drm/drm_buddy.h b/include/drm/drm_buddy.h index 513837632b7d..9ee105d4309f 100644 --- a/include/drm/drm_buddy.h +++ b/include/drm/drm_buddy.h @@ -10,6 +10,7 @@ #include <linux/list.h> #include <linux/slab.h> #include <linux/sched.h> +#include <linux/rbtree.h> #include <drm/drm_print.h> @@ -53,7 +54,11 @@ struct drm_buddy_block { * a list, if so desired. As soon as the block is freed with * drm_buddy_free* ownership is given back to the mm. */ - struct list_head link; + union { + struct rb_node rb; + struct list_head link; + }; + struct list_head tmp_link; }; @@ -68,7 +73,7 @@ struct drm_buddy_block { */ struct drm_buddy { /* Maintain a free list for each order. */ - struct list_head *free_list; + struct rb_root *free_tree; /* * Maintain explicit binary tree(s) to track the allocation of the @@ -94,7 +99,7 @@ struct drm_buddy { }; static inline u64 -drm_buddy_block_offset(struct drm_buddy_block *block) +drm_buddy_block_offset(const struct drm_buddy_block *block) { return block->header & DRM_BUDDY_HEADER_OFFSET; } base-commit: 3a9cf301794c1a49d95eeb13119ff490fb5cfe88 -- 2.34.1

1 month, 3 weeks

3
5
0 0

Re: [PATCH v2] comedi: fix divide-by-zero in comedi_buf_munge()

by Deepanshu Kartikey

Hello Ian and maintainers, Just a gentle ping on this patch. It's been 10 days since v2 was sent incorporating Ian's feedback to merge the chanlist_len check with the existing early return. Please let me know if any further changes are needed. Thank you, Deepanshu

1 month, 3 weeks

2
1
0 0

FAILED: patch "[PATCH] media: tuner: xc5000: Fix use-after-free in xc5000_release

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x 40b7a19f321e65789612ebaca966472055dab48c # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100341-dime-left-e15f@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 40b7a19f321e65789612ebaca966472055dab48c Mon Sep 17 00:00:00 2001 From: Duoming Zhou <duoming(a)zju.edu.cn> Date: Wed, 17 Sep 2025 17:56:08 +0800 Subject: [PATCH] media: tuner: xc5000: Fix use-after-free in xc5000_release The original code uses cancel_delayed_work() in xc5000_release(), which does not guarantee that the delayed work item timer_sleep has fully completed if it was already running. This leads to use-after-free scenarios where xc5000_release() may free the xc5000_priv while timer_sleep is still active and attempts to dereference the xc5000_priv. A typical race condition is illustrated below: CPU 0 (release thread) | CPU 1 (delayed work callback) xc5000_release() | xc5000_do_timer_sleep() cancel_delayed_work() | hybrid_tuner_release_state(priv) | kfree(priv) | | priv = container_of() // UAF Replace cancel_delayed_work() with cancel_delayed_work_sync() to ensure that the timer_sleep is properly canceled before the xc5000_priv memory is deallocated. A deadlock concern was considered: xc5000_release() is called in a process context and is not holding any locks that the timer_sleep work item might also need. Therefore, the use of the _sync() variant is safe here. This bug was initially identified through static analysis. Fixes: f7a27ff1fb77 ("[media] xc5000: delay tuner sleep to 5 seconds") Cc: stable(a)vger.kernel.org Signed-off-by: Duoming Zhou <duoming(a)zju.edu.cn> Signed-off-by: Hans Verkuil <hverkuil+cisco(a)kernel.org> [hverkuil: fix typo in Subject: tunner -> tuner] diff --git a/drivers/media/tuners/xc5000.c b/drivers/media/tuners/xc5000.c index bf4ff461e082..a28481edd22e 100644 --- a/drivers/media/tuners/xc5000.c +++ b/drivers/media/tuners/xc5000.c @@ -1304,7 +1304,7 @@ static void xc5000_release(struct dvb_frontend *fe) mutex_lock(&xc5000_list_mutex); if (priv) { - cancel_delayed_work(&priv->timer_sleep); + cancel_delayed_work_sync(&priv->timer_sleep); hybrid_tuner_release_state(priv); }

1 month, 3 weeks

2
2
0 0

Please backport commit a40282dd3c48 ("gcc-plugins: Remove TODO_verify_il for GCC >= 16")

by Kees Cook

Hi, Please backport: commit a40282dd3c48 ("gcc-plugins: Remove TODO_verify_il for GCC >= 16") to all stable kernel versions. This prepares the GCC plugins for the coming GCC 16 release. Thanks! -Kees -- Kees Cook

1 month, 3 weeks

2
2
0 0

FAILED: patch "[PATCH] media: tuner: xc5000: Fix use-after-free in xc5000_release

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x 40b7a19f321e65789612ebaca966472055dab48c # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100341-cobbler-alabaster-748a@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 40b7a19f321e65789612ebaca966472055dab48c Mon Sep 17 00:00:00 2001 From: Duoming Zhou <duoming(a)zju.edu.cn> Date: Wed, 17 Sep 2025 17:56:08 +0800 Subject: [PATCH] media: tuner: xc5000: Fix use-after-free in xc5000_release The original code uses cancel_delayed_work() in xc5000_release(), which does not guarantee that the delayed work item timer_sleep has fully completed if it was already running. This leads to use-after-free scenarios where xc5000_release() may free the xc5000_priv while timer_sleep is still active and attempts to dereference the xc5000_priv. A typical race condition is illustrated below: CPU 0 (release thread) | CPU 1 (delayed work callback) xc5000_release() | xc5000_do_timer_sleep() cancel_delayed_work() | hybrid_tuner_release_state(priv) | kfree(priv) | | priv = container_of() // UAF Replace cancel_delayed_work() with cancel_delayed_work_sync() to ensure that the timer_sleep is properly canceled before the xc5000_priv memory is deallocated. A deadlock concern was considered: xc5000_release() is called in a process context and is not holding any locks that the timer_sleep work item might also need. Therefore, the use of the _sync() variant is safe here. This bug was initially identified through static analysis. Fixes: f7a27ff1fb77 ("[media] xc5000: delay tuner sleep to 5 seconds") Cc: stable(a)vger.kernel.org Signed-off-by: Duoming Zhou <duoming(a)zju.edu.cn> Signed-off-by: Hans Verkuil <hverkuil+cisco(a)kernel.org> [hverkuil: fix typo in Subject: tunner -> tuner] diff --git a/drivers/media/tuners/xc5000.c b/drivers/media/tuners/xc5000.c index bf4ff461e082..a28481edd22e 100644 --- a/drivers/media/tuners/xc5000.c +++ b/drivers/media/tuners/xc5000.c @@ -1304,7 +1304,7 @@ static void xc5000_release(struct dvb_frontend *fe) mutex_lock(&xc5000_list_mutex); if (priv) { - cancel_delayed_work(&priv->timer_sleep); + cancel_delayed_work_sync(&priv->timer_sleep); hybrid_tuner_release_state(priv); }

1 month, 3 weeks

2
2
0 0

Investitionsprojekt

by Hallo

Guten Morgen, mein Name ist Shun Tung, und ich vertrete die Interessen der Familie Wing Mau, die an verschiedenen Investitionsmöglichkeiten in Ihrem Land interessiert ist. Besonders interessieren wir uns für die Sektoren Immobilien, Tourismus, erneuerbare Energien und Fertigung. Aufgrund politischer Herausforderungen in unserem Heimatland suchen wir einen zuverlässigen und vertrauenswürdigen Partner im Ausland, der diese Investitionen in unserem Auftrag verwaltet und absichert. Ihre Rolle würde darin bestehen, die Investitionen zu überwachen und sicherzustellen, dass sie erfolgreich sind. Im Gegenzug würden Sie einen vereinbarten Prozentsatz der Managementgebühren erhalten, während die Gewinne gleichmäßig zwischen beiden Parteien aufgeteilt werden. Falls dieses Angebot Ihr Interesse weckt, würde ich mich über ein weiteres Gespräch freuen. Ich freue mich auf Ihre Antwort. Mit freundlichen Grüßen, Shun Tung

1 month, 3 weeks

1
0
0 0

[PATCH Linux-5.15.y Linux-5.10.y Linux-5.4.y 1/1] udp: Fix memory accounting leak.

by Yifei Liu

From: Kuniyuki Iwashima <kuniyu(a)amazon.com> [ Upstream commit df207de9d9e7a4d92f8567e2c539d9c8c12fd99d ] Matt Dowling reported a weird UDP memory usage issue. Under normal operation, the UDP memory usage reported in /proc/net/sockstat remains close to zero. However, it occasionally spiked to 524,288 pages and never dropped. Moreover, the value doubled when the application was terminated. Finally, it caused intermittent packet drops. We can reproduce the issue with the script below [0]: 1. /proc/net/sockstat reports 0 pages # cat /proc/net/sockstat | grep UDP: UDP: inuse 1 mem 0 2. Run the script till the report reaches 524,288 # python3 test.py & sleep 5 # cat /proc/net/sockstat | grep UDP: UDP: inuse 3 mem 524288 <-- (INT_MAX + 1) >> PAGE_SHIFT 3. Kill the socket and confirm the number never drops # pkill python3 && sleep 5 # cat /proc/net/sockstat | grep UDP: UDP: inuse 1 mem 524288 4. (necessary since v6.0) Trigger proto_memory_pcpu_drain() # python3 test.py & sleep 1 && pkill python3 5. The number doubles # cat /proc/net/sockstat | grep UDP: UDP: inuse 1 mem 1048577 The application set INT_MAX to SO_RCVBUF, which triggered an integer overflow in udp_rmem_release(). When a socket is close()d, udp_destruct_common() purges its receive queue and sums up skb->truesize in the queue. This total is calculated and stored in a local unsigned integer variable. The total size is then passed to udp_rmem_release() to adjust memory accounting. However, because the function takes a signed integer argument, the total size can wrap around, causing an overflow. Then, the released amount is calculated as follows: 1) Add size to sk->sk_forward_alloc. 2) Round down sk->sk_forward_alloc to the nearest lower multiple of PAGE_SIZE and assign it to amount. 3) Subtract amount from sk->sk_forward_alloc. 4) Pass amount >> PAGE_SHIFT to __sk_mem_reduce_allocated(). When the issue occurred, the total in udp_destruct_common() was 2147484480 (INT_MAX + 833), which was cast to -2147482816 in udp_rmem_release(). At 1) sk->sk_forward_alloc is changed from 3264 to -2147479552, and 2) sets -2147479552 to amount. 3) reverts the wraparound, so we don't see a warning in inet_sock_destruct(). However, udp_memory_allocated ends up doubling at 4). Since commit 3cd3399dd7a8 ("net: implement per-cpu reserves for memory_allocated"), memory usage no longer doubles immediately after a socket is close()d because __sk_mem_reduce_allocated() caches the amount in udp_memory_per_cpu_fw_alloc. However, the next time a UDP socket receives a packet, the subtraction takes effect, causing UDP memory usage to double. This issue makes further memory allocation fail once the socket's sk->sk_rmem_alloc exceeds net.ipv4.udp_rmem_min, resulting in packet drops. To prevent this issue, let's use unsigned int for the calculation and call sk_forward_alloc_add() only once for the small delta. Note that first_packet_length() also potentially has the same problem. [0]: from socket import * SO_RCVBUFFORCE = 33 INT_MAX = (2 ** 31) - 1 s = socket(AF_INET, SOCK_DGRAM) s.bind(('', 0)) s.setsockopt(SOL_SOCKET, SO_RCVBUFFORCE, INT_MAX) c = socket(AF_INET, SOCK_DGRAM) c.connect(s.getsockname()) data = b'a' * 100 while True: c.send(data) Fixes: f970bd9e3a06 ("udp: implement memory accounting helpers") Reported-by: Matt Dowling <madowlin(a)amazon.com> Signed-off-by: Kuniyuki Iwashima <kuniyu(a)amazon.com> Reviewed-by: Willem de Bruijn <willemb(a)google.com> Link: https://patch.msgid.link/20250401184501.67377-3-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> (cherry picked from commit df207de9d9e7a4d92f8567e2c539d9c8c12fd99d) [Yifei: resolve minor conflicts and fix CVE-2025-22058] Signed-off-by: Yifei Liu <yifei.l.liu(a)oracle.com> --- net/ipv4/udp.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 51a12fa486b6..3ebd5765fb9f 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1459,12 +1459,12 @@ static bool udp_skb_has_head_state(struct sk_buff *skb) } /* fully reclaim rmem/fwd memory allocated for skb */ -static void udp_rmem_release(struct sock *sk, int size, int partial, - bool rx_queue_lock_held) +static void udp_rmem_release(struct sock *sk, unsigned int size, + int partial, bool rx_queue_lock_held) { struct udp_sock *up = udp_sk(sk); struct sk_buff_head *sk_queue; - int amt; + unsigned int amt; if (likely(partial)) { up->forward_deficit += size; @@ -1484,10 +1484,8 @@ static void udp_rmem_release(struct sock *sk, int size, int partial, if (!rx_queue_lock_held) spin_lock(&sk_queue->lock); - - sk->sk_forward_alloc += size; - amt = (sk->sk_forward_alloc - partial) & ~(SK_MEM_QUANTUM - 1); - sk->sk_forward_alloc -= amt; + amt = (size + sk->sk_forward_alloc - partial) & ~(PAGE_SIZE - 1); + sk->sk_forward_alloc += size - amt; if (amt) __sk_mem_reduce_allocated(sk, amt >> SK_MEM_QUANTUM_SHIFT); @@ -1671,7 +1669,7 @@ EXPORT_SYMBOL_GPL(skb_consume_udp); static struct sk_buff *__first_packet_length(struct sock *sk, struct sk_buff_head *rcvq, - int *total) + unsigned int *total) { struct sk_buff *skb; @@ -1704,8 +1702,8 @@ static int first_packet_length(struct sock *sk) { struct sk_buff_head *rcvq = &udp_sk(sk)->reader_queue; struct sk_buff_head *sk_queue = &sk->sk_receive_queue; + unsigned int total = 0; struct sk_buff *skb; - int total = 0; int res; spin_lock_bh(&rcvq->lock); -- 2.50.1

1 month, 3 weeks

1
0
0 0

[PATCH v1] rust: cfi: only 64-bit arm and x86 support CFI_CLANG

by Conor Dooley

From: Conor Dooley <conor.dooley(a)microchip.com> The kernel uses the standard rustc targets for non-x86 targets, and out of those only 64-bit arm's target has kcfi support enabled. For x86, the custom 64-bit target enables kcfi. The HAVE_CFI_ICALL_NORMALIZE_INTEGERS_RUSTC config option that allows CFI_CLANG to be used in combination with RUST does not check whether the rustc target supports kcfi. This breaks the build on riscv (and presumably 32-bit arm) when CFI_CLANG and RUST are enabled at the same time. Ordinarily, a rustc-option check would be used to detect target support but unfortunately rustc-option filters out the target for reasons given in commit 46e24a545cdb4 ("rust: kasan/kbuild: fix missing flags on first build"). As a result, if the host supports kcfi but the target does not, e.g. when building for riscv on x86_64, the build would remain broken. Instead, make HAVE_CFI_ICALL_NORMALIZE_INTEGERS_RUSTC depend on the only two architectures where the target used supports it to fix the build. CC: stable(a)vger.kernel.org Fixes: ca627e636551e ("rust: cfi: add support for CFI_CLANG with Rust") Signed-off-by: Conor Dooley <conor.dooley(a)microchip.com> --- CC: Paul Walmsley <paul.walmsley(a)sifive.com> CC: Palmer Dabbelt <palmer(a)dabbelt.com> CC: Alexandre Ghiti <alex(a)ghiti.fr> CC: Miguel Ojeda <ojeda(a)kernel.org> CC: Alex Gaynor <alex.gaynor(a)gmail.com> CC: Boqun Feng <boqun.feng(a)gmail.com> CC: Gary Guo <gary(a)garyguo.net> CC: "Björn Roy Baron" <bjorn3_gh(a)protonmail.com> CC: Benno Lossin <lossin(a)kernel.org> CC: Andreas Hindborg <a.hindborg(a)kernel.org> CC: Alice Ryhl <aliceryhl(a)google.com> CC: Trevor Gross <tmgross(a)umich.edu> CC: Danilo Krummrich <dakr(a)kernel.org> CC: Kees Cook <kees(a)kernel.org> CC: Sami Tolvanen <samitolvanen(a)google.com> CC: Matthew Maurer <mmaurer(a)google.com> CC: "Peter Zijlstra (Intel)" <peterz(a)infradead.org> CC: linux-kernel(a)vger.kernel.org CC: linux-riscv(a)lists.infradead.org CC: rust-for-linux(a)vger.kernel.org --- arch/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/Kconfig b/arch/Kconfig index d1b4ffd6e0856..880cddff5eda7 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -917,6 +917,7 @@ config HAVE_CFI_ICALL_NORMALIZE_INTEGERS_RUSTC def_bool y depends on HAVE_CFI_ICALL_NORMALIZE_INTEGERS_CLANG depends on RUSTC_VERSION >= 107900 + depends on ARM64 || X86_64 # With GCOV/KASAN we need this fix: https://github.com/rust-lang/rust/pull/129373 depends on (RUSTC_LLVM_VERSION >= 190103 && RUSTC_VERSION >= 108200) || \ (!GCOV_KERNEL && !KASAN_GENERIC && !KASAN_SW_TAGS) -- 2.47.2

1 month, 3 weeks

5
6
0 0

FAILED: patch "[PATCH] media: rc: fix races with imon_disconnect()" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x fa0f61cc1d828178aa921475a9b786e7fbb65ccb # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100320-pout-unwired-1096@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From fa0f61cc1d828178aa921475a9b786e7fbb65ccb Mon Sep 17 00:00:00 2001 From: Larshin Sergey <Sergey.Larshin(a)kaspersky.com> Date: Tue, 29 Jul 2025 13:13:32 +0300 Subject: [PATCH] media: rc: fix races with imon_disconnect() Syzbot reports a KASAN issue as below: BUG: KASAN: use-after-free in __create_pipe include/linux/usb.h:1945 [inline] BUG: KASAN: use-after-free in send_packet+0xa2d/0xbc0 drivers/media/rc/imon.c:627 Read of size 4 at addr ffff8880256fb000 by task syz-executor314/4465 CPU: 2 PID: 4465 Comm: syz-executor314 Not tainted 6.0.0-rc1-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:317 [inline] print_report.cold+0x2ba/0x6e9 mm/kasan/report.c:433 kasan_report+0xb1/0x1e0 mm/kasan/report.c:495 __create_pipe include/linux/usb.h:1945 [inline] send_packet+0xa2d/0xbc0 drivers/media/rc/imon.c:627 vfd_write+0x2d9/0x550 drivers/media/rc/imon.c:991 vfs_write+0x2d7/0xdd0 fs/read_write.c:576 ksys_write+0x127/0x250 fs/read_write.c:631 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The iMON driver improperly releases the usb_device reference in imon_disconnect without coordinating with active users of the device. Specifically, the fields usbdev_intf0 and usbdev_intf1 are not protected by the users counter (ictx->users). During probe, imon_init_intf0 or imon_init_intf1 increments the usb_device reference count depending on the interface. However, during disconnect, usb_put_dev is called unconditionally, regardless of actual usage. As a result, if vfd_write or other operations are still in progress after disconnect, this can lead to a use-after-free of the usb_device pointer. Thread 1 vfd_write Thread 2 imon_disconnect ... if usb_put_dev(ictx->usbdev_intf0) else usb_put_dev(ictx->usbdev_intf1) ... while send_packet if pipe = usb_sndintpipe( ictx->usbdev_intf0) UAF else pipe = usb_sndctrlpipe( ictx->usbdev_intf0, 0) UAF Guard access to usbdev_intf0 and usbdev_intf1 after disconnect by checking ictx->disconnected in all writer paths. Add early return with -ENODEV in send_packet(), vfd_write(), lcd_write() and display_open() if the device is no longer present. Set and read ictx->disconnected under ictx->lock to ensure memory synchronization. Acquire the lock in imon_disconnect() before setting the flag to synchronize with any ongoing operations. Ensure writers exit early and safely after disconnect before the USB core proceeds with cleanup. Found by Linux Verification Center (linuxtesting.org) with Syzkaller. Reported-by: syzbot+f1a69784f6efe748c3bf(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=f1a69784f6efe748c3bf Fixes: 21677cfc562a ("V4L/DVB: ir-core: add imon driver") Cc: stable(a)vger.kernel.org Signed-off-by: Larshin Sergey <Sergey.Larshin(a)kaspersky.com> Signed-off-by: Sean Young <sean(a)mess.org> Signed-off-by: Hans Verkuil <hverkuil+cisco(a)kernel.org> diff --git a/drivers/media/rc/imon.c b/drivers/media/rc/imon.c index 91d05aadced3..35b9e07003d8 100644 --- a/drivers/media/rc/imon.c +++ b/drivers/media/rc/imon.c @@ -531,7 +531,9 @@ static int display_open(struct inode *inode, struct file *file) mutex_lock(&ictx->lock); - if (!ictx->display_supported) { + if (ictx->disconnected) { + retval = -ENODEV; + } else if (!ictx->display_supported) { pr_err("display not supported by device\n"); retval = -ENODEV; } else if (ictx->display_isopen) { @@ -595,6 +597,9 @@ static int send_packet(struct imon_context *ictx) lockdep_assert_held(&ictx->lock); + if (ictx->disconnected) + return -ENODEV; + /* Check if we need to use control or interrupt urb */ if (!ictx->tx_control) { pipe = usb_sndintpipe(ictx->usbdev_intf0, @@ -949,12 +954,14 @@ static ssize_t vfd_write(struct file *file, const char __user *buf, static const unsigned char vfd_packet6[] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF }; - if (ictx->disconnected) - return -ENODEV; - if (mutex_lock_interruptible(&ictx->lock)) return -ERESTARTSYS; + if (ictx->disconnected) { + retval = -ENODEV; + goto exit; + } + if (!ictx->dev_present_intf0) { pr_err_ratelimited("no iMON device present\n"); retval = -ENODEV; @@ -1029,11 +1036,13 @@ static ssize_t lcd_write(struct file *file, const char __user *buf, int retval = 0; struct imon_context *ictx = file->private_data; - if (ictx->disconnected) - return -ENODEV; - mutex_lock(&ictx->lock); + if (ictx->disconnected) { + retval = -ENODEV; + goto exit; + } + if (!ictx->display_supported) { pr_err_ratelimited("no iMON display present\n"); retval = -ENODEV; @@ -2507,7 +2516,11 @@ static void imon_disconnect(struct usb_interface *interface) int ifnum; ictx = usb_get_intfdata(interface); + + mutex_lock(&ictx->lock); ictx->disconnected = true; + mutex_unlock(&ictx->lock); + dev = ictx->dev; ifnum = interface->cur_altsetting->desc.bInterfaceNumber;

1 month, 3 weeks

2
4
0 0

FAILED: patch "[PATCH] media: tuner: xc5000: Fix use-after-free in xc5000_release

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 40b7a19f321e65789612ebaca966472055dab48c # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100340-pleat-amusable-e5dc@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 40b7a19f321e65789612ebaca966472055dab48c Mon Sep 17 00:00:00 2001 From: Duoming Zhou <duoming(a)zju.edu.cn> Date: Wed, 17 Sep 2025 17:56:08 +0800 Subject: [PATCH] media: tuner: xc5000: Fix use-after-free in xc5000_release The original code uses cancel_delayed_work() in xc5000_release(), which does not guarantee that the delayed work item timer_sleep has fully completed if it was already running. This leads to use-after-free scenarios where xc5000_release() may free the xc5000_priv while timer_sleep is still active and attempts to dereference the xc5000_priv. A typical race condition is illustrated below: CPU 0 (release thread) | CPU 1 (delayed work callback) xc5000_release() | xc5000_do_timer_sleep() cancel_delayed_work() | hybrid_tuner_release_state(priv) | kfree(priv) | | priv = container_of() // UAF Replace cancel_delayed_work() with cancel_delayed_work_sync() to ensure that the timer_sleep is properly canceled before the xc5000_priv memory is deallocated. A deadlock concern was considered: xc5000_release() is called in a process context and is not holding any locks that the timer_sleep work item might also need. Therefore, the use of the _sync() variant is safe here. This bug was initially identified through static analysis. Fixes: f7a27ff1fb77 ("[media] xc5000: delay tuner sleep to 5 seconds") Cc: stable(a)vger.kernel.org Signed-off-by: Duoming Zhou <duoming(a)zju.edu.cn> Signed-off-by: Hans Verkuil <hverkuil+cisco(a)kernel.org> [hverkuil: fix typo in Subject: tunner -> tuner] diff --git a/drivers/media/tuners/xc5000.c b/drivers/media/tuners/xc5000.c index bf4ff461e082..a28481edd22e 100644 --- a/drivers/media/tuners/xc5000.c +++ b/drivers/media/tuners/xc5000.c @@ -1304,7 +1304,7 @@ static void xc5000_release(struct dvb_frontend *fe) mutex_lock(&xc5000_list_mutex); if (priv) { - cancel_delayed_work(&priv->timer_sleep); + cancel_delayed_work_sync(&priv->timer_sleep); hybrid_tuner_release_state(priv); }

1 month, 3 weeks

2
2
0 0

FAILED: patch "[PATCH] media: tuner: xc5000: Fix use-after-free in xc5000_release

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x 40b7a19f321e65789612ebaca966472055dab48c # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100339-scarring-buffoon-fbc5@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 40b7a19f321e65789612ebaca966472055dab48c Mon Sep 17 00:00:00 2001 From: Duoming Zhou <duoming(a)zju.edu.cn> Date: Wed, 17 Sep 2025 17:56:08 +0800 Subject: [PATCH] media: tuner: xc5000: Fix use-after-free in xc5000_release The original code uses cancel_delayed_work() in xc5000_release(), which does not guarantee that the delayed work item timer_sleep has fully completed if it was already running. This leads to use-after-free scenarios where xc5000_release() may free the xc5000_priv while timer_sleep is still active and attempts to dereference the xc5000_priv. A typical race condition is illustrated below: CPU 0 (release thread) | CPU 1 (delayed work callback) xc5000_release() | xc5000_do_timer_sleep() cancel_delayed_work() | hybrid_tuner_release_state(priv) | kfree(priv) | | priv = container_of() // UAF Replace cancel_delayed_work() with cancel_delayed_work_sync() to ensure that the timer_sleep is properly canceled before the xc5000_priv memory is deallocated. A deadlock concern was considered: xc5000_release() is called in a process context and is not holding any locks that the timer_sleep work item might also need. Therefore, the use of the _sync() variant is safe here. This bug was initially identified through static analysis. Fixes: f7a27ff1fb77 ("[media] xc5000: delay tuner sleep to 5 seconds") Cc: stable(a)vger.kernel.org Signed-off-by: Duoming Zhou <duoming(a)zju.edu.cn> Signed-off-by: Hans Verkuil <hverkuil+cisco(a)kernel.org> [hverkuil: fix typo in Subject: tunner -> tuner] diff --git a/drivers/media/tuners/xc5000.c b/drivers/media/tuners/xc5000.c index bf4ff461e082..a28481edd22e 100644 --- a/drivers/media/tuners/xc5000.c +++ b/drivers/media/tuners/xc5000.c @@ -1304,7 +1304,7 @@ static void xc5000_release(struct dvb_frontend *fe) mutex_lock(&xc5000_list_mutex); if (priv) { - cancel_delayed_work(&priv->timer_sleep); + cancel_delayed_work_sync(&priv->timer_sleep); hybrid_tuner_release_state(priv); }

1 month, 3 weeks

2
2
0 0

FAILED: patch "[PATCH] media: i2c: tc358743: Fix use-after-free bugs caused by" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x 79d10f4f21a92e459b2276a77be62c59c1502c9d # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100333-silica-pebble-c8d6@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 79d10f4f21a92e459b2276a77be62c59c1502c9d Mon Sep 17 00:00:00 2001 From: Duoming Zhou <duoming(a)zju.edu.cn> Date: Wed, 17 Sep 2025 17:57:42 +0800 Subject: [PATCH] media: i2c: tc358743: Fix use-after-free bugs caused by orphan timer in probe The state->timer is a cyclic timer that schedules work_i2c_poll and delayed_work_enable_hotplug, while rearming itself. Using timer_delete() fails to guarantee the timer isn't still running when destroyed, similarly cancel_delayed_work() cannot ensure delayed_work_enable_hotplug has terminated if already executing. During probe failure after timer initialization, these may continue running as orphans and reference the already-freed tc358743_state object through tc358743_irq_poll_timer. The following is the trace captured by KASAN. BUG: KASAN: slab-use-after-free in __run_timer_base.part.0+0x7d7/0x8c0 Write of size 8 at addr ffff88800ded83c8 by task swapper/1/0 ... Call Trace: <IRQ> dump_stack_lvl+0x55/0x70 print_report+0xcf/0x610 ? __pfx_sched_balance_find_src_group+0x10/0x10 ? __run_timer_base.part.0+0x7d7/0x8c0 kasan_report+0xb8/0xf0 ? __run_timer_base.part.0+0x7d7/0x8c0 __run_timer_base.part.0+0x7d7/0x8c0 ? rcu_sched_clock_irq+0xb06/0x27d0 ? __pfx___run_timer_base.part.0+0x10/0x10 ? try_to_wake_up+0xb15/0x1960 ? tmigr_update_events+0x280/0x740 ? _raw_spin_lock_irq+0x80/0xe0 ? __pfx__raw_spin_lock_irq+0x10/0x10 tmigr_handle_remote_up+0x603/0x7e0 ? __pfx_tmigr_handle_remote_up+0x10/0x10 ? sched_balance_trigger+0x98/0x9f0 ? sched_tick+0x221/0x5a0 ? _raw_spin_lock_irq+0x80/0xe0 ? __pfx__raw_spin_lock_irq+0x10/0x10 ? tick_nohz_handler+0x339/0x440 ? __pfx_tmigr_handle_remote_up+0x10/0x10 __walk_groups.isra.0+0x42/0x150 tmigr_handle_remote+0x1f4/0x2e0 ? __pfx_tmigr_handle_remote+0x10/0x10 ? ktime_get+0x60/0x140 ? lapic_next_event+0x11/0x20 ? clockevents_program_event+0x1d4/0x2a0 ? hrtimer_interrupt+0x322/0x780 handle_softirqs+0x16a/0x550 irq_exit_rcu+0xaf/0xe0 sysvec_apic_timer_interrupt+0x70/0x80 </IRQ> ... Allocated by task 141: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x7f/0x90 __kmalloc_node_track_caller_noprof+0x198/0x430 devm_kmalloc+0x7b/0x1e0 tc358743_probe+0xb7/0x610 i2c_device_probe+0x51d/0x880 really_probe+0x1ca/0x5c0 __driver_probe_device+0x248/0x310 driver_probe_device+0x44/0x120 __device_attach_driver+0x174/0x220 bus_for_each_drv+0x100/0x190 __device_attach+0x206/0x370 bus_probe_device+0x123/0x170 device_add+0xd25/0x1470 i2c_new_client_device+0x7a0/0xcd0 do_one_initcall+0x89/0x300 do_init_module+0x29d/0x7f0 load_module+0x4f48/0x69e0 init_module_from_file+0xe4/0x150 idempotent_init_module+0x320/0x670 __x64_sys_finit_module+0xbd/0x120 do_syscall_64+0xac/0x280 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 141: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3a/0x60 __kasan_slab_free+0x3f/0x50 kfree+0x137/0x370 release_nodes+0xa4/0x100 devres_release_group+0x1b2/0x380 i2c_device_probe+0x694/0x880 really_probe+0x1ca/0x5c0 __driver_probe_device+0x248/0x310 driver_probe_device+0x44/0x120 __device_attach_driver+0x174/0x220 bus_for_each_drv+0x100/0x190 __device_attach+0x206/0x370 bus_probe_device+0x123/0x170 device_add+0xd25/0x1470 i2c_new_client_device+0x7a0/0xcd0 do_one_initcall+0x89/0x300 do_init_module+0x29d/0x7f0 load_module+0x4f48/0x69e0 init_module_from_file+0xe4/0x150 idempotent_init_module+0x320/0x670 __x64_sys_finit_module+0xbd/0x120 do_syscall_64+0xac/0x280 entry_SYSCALL_64_after_hwframe+0x77/0x7f ... Replace timer_delete() with timer_delete_sync() and cancel_delayed_work() with cancel_delayed_work_sync() to ensure proper termination of timer and work items before resource cleanup. This bug was initially identified through static analysis. For reproduction and testing, I created a functional emulation of the tc358743 device via a kernel module and introduced faults through the debugfs interface. Fixes: 869f38ae07f7 ("media: i2c: tc358743: Fix crash in the probe error path when using polling") Fixes: d32d98642de6 ("[media] Driver for Toshiba TC358743 HDMI to CSI-2 bridge") Cc: stable(a)vger.kernel.org Signed-off-by: Duoming Zhou <duoming(a)zju.edu.cn> Signed-off-by: Hans Verkuil <hverkuil+cisco(a)kernel.org> diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c index aa02a5a6ae3e..a0ca19359c43 100644 --- a/drivers/media/i2c/tc358743.c +++ b/drivers/media/i2c/tc358743.c @@ -2326,10 +2326,10 @@ static int tc358743_probe(struct i2c_client *client) err_work_queues: cec_unregister_adapter(state->cec_adap); if (!state->i2c_client->irq) { - timer_delete(&state->timer); + timer_delete_sync(&state->timer); flush_work(&state->work_i2c_poll); } - cancel_delayed_work(&state->delayed_work_enable_hotplug); + cancel_delayed_work_sync(&state->delayed_work_enable_hotplug); mutex_destroy(&state->confctl_mutex); err_hdl: media_entity_cleanup(&sd->entity);

1 month, 3 weeks

2
1
0 0

[PATCH 0/2] mm/damon/sysfs: fix commit test damon_ctx [de]allocation

by SeongJae Park

DAMON sysfs interface dynamically allocates and uses a damon_ctx object for testing if given inputs for online DAMON parameters update is valid. The object is being used without an allocation failure check, and leaked when the test succeeds. Fix the two bugs. SeongJae Park (2): mm/damon/sysfs: catch commit test ctx alloc failure mm/damon/sysfs: dealloc commit test ctx always mm/damon/sysfs.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) base-commit: 3c39180d389ca58cf309b7aa58b6a3617151c226 -- 2.39.5

1 month, 3 weeks

1
2
0 0

+ fsnotify-pass-correct-offset-to-fsnotify_mmap_perm.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: fsnotify: pass correct offset to fsnotify_mmap_perm() has been added to the -mm mm-hotfixes-unstable branch. Its filename is fsnotify-pass-correct-offset-to-fsnotify_mmap_perm.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Ryan Roberts <ryan.roberts(a)arm.com> Subject: fsnotify: pass correct offset to fsnotify_mmap_perm() Date: Fri, 3 Oct 2025 16:52:36 +0100 fsnotify_mmap_perm() requires a byte offset for the file about to be mmap'ed. But it is called from vm_mmap_pgoff(), which has a page offset. Previously the conversion was done incorrectly so let's fix it, being careful not to overflow on 32-bit platforms. Discovered during code review. Link: https://lkml.kernel.org/r/20251003155238.2147410-1-ryan.roberts@arm.com Fixes: 066e053fe208 ("fsnotify: add pre-content hooks on mmap()") Signed-off-by: Ryan Roberts <ryan.roberts(a)arm.com> Reviewed-by: Kiryl Shutsemau <kas(a)kernel.org> Cc: Amir Goldstein <amir73il(a)gmail.com> Cc: David Hildenbrand <david(a)redhat.com> Cc: Liam Howlett <liam.howlett(a)oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> Cc: Michal Hocko <mhocko(a)suse.com> Cc: Mike Rapoport <rppt(a)kernel.org> Cc: Suren Baghdasaryan <surenb(a)google.com> Cc: Vlastimil Babka <vbabka(a)suse.cz> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/util.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/mm/util.c~fsnotify-pass-correct-offset-to-fsnotify_mmap_perm +++ a/mm/util.c @@ -566,6 +566,7 @@ unsigned long vm_mmap_pgoff(struct file unsigned long len, unsigned long prot, unsigned long flag, unsigned long pgoff) { + loff_t off = (loff_t)pgoff << PAGE_SHIFT; unsigned long ret; struct mm_struct *mm = current->mm; unsigned long populate; @@ -573,7 +574,7 @@ unsigned long vm_mmap_pgoff(struct file ret = security_mmap_file(file, prot, flag); if (!ret) - ret = fsnotify_mmap_perm(file, prot, pgoff >> PAGE_SHIFT, len); + ret = fsnotify_mmap_perm(file, prot, off, len); if (!ret) { if (mmap_write_lock_killable(mm)) return -EINTR; _ Patches currently in -mm which might be from ryan.roberts(a)arm.com are fsnotify-pass-correct-offset-to-fsnotify_mmap_perm.patch

1 month, 3 weeks

1
0
0 0

FAILED: patch "[PATCH] media: i2c: tc358743: Fix use-after-free bugs caused by" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x 79d10f4f21a92e459b2276a77be62c59c1502c9d # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100332-oblivion-shun-2bd3@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 79d10f4f21a92e459b2276a77be62c59c1502c9d Mon Sep 17 00:00:00 2001 From: Duoming Zhou <duoming(a)zju.edu.cn> Date: Wed, 17 Sep 2025 17:57:42 +0800 Subject: [PATCH] media: i2c: tc358743: Fix use-after-free bugs caused by orphan timer in probe The state->timer is a cyclic timer that schedules work_i2c_poll and delayed_work_enable_hotplug, while rearming itself. Using timer_delete() fails to guarantee the timer isn't still running when destroyed, similarly cancel_delayed_work() cannot ensure delayed_work_enable_hotplug has terminated if already executing. During probe failure after timer initialization, these may continue running as orphans and reference the already-freed tc358743_state object through tc358743_irq_poll_timer. The following is the trace captured by KASAN. BUG: KASAN: slab-use-after-free in __run_timer_base.part.0+0x7d7/0x8c0 Write of size 8 at addr ffff88800ded83c8 by task swapper/1/0 ... Call Trace: <IRQ> dump_stack_lvl+0x55/0x70 print_report+0xcf/0x610 ? __pfx_sched_balance_find_src_group+0x10/0x10 ? __run_timer_base.part.0+0x7d7/0x8c0 kasan_report+0xb8/0xf0 ? __run_timer_base.part.0+0x7d7/0x8c0 __run_timer_base.part.0+0x7d7/0x8c0 ? rcu_sched_clock_irq+0xb06/0x27d0 ? __pfx___run_timer_base.part.0+0x10/0x10 ? try_to_wake_up+0xb15/0x1960 ? tmigr_update_events+0x280/0x740 ? _raw_spin_lock_irq+0x80/0xe0 ? __pfx__raw_spin_lock_irq+0x10/0x10 tmigr_handle_remote_up+0x603/0x7e0 ? __pfx_tmigr_handle_remote_up+0x10/0x10 ? sched_balance_trigger+0x98/0x9f0 ? sched_tick+0x221/0x5a0 ? _raw_spin_lock_irq+0x80/0xe0 ? __pfx__raw_spin_lock_irq+0x10/0x10 ? tick_nohz_handler+0x339/0x440 ? __pfx_tmigr_handle_remote_up+0x10/0x10 __walk_groups.isra.0+0x42/0x150 tmigr_handle_remote+0x1f4/0x2e0 ? __pfx_tmigr_handle_remote+0x10/0x10 ? ktime_get+0x60/0x140 ? lapic_next_event+0x11/0x20 ? clockevents_program_event+0x1d4/0x2a0 ? hrtimer_interrupt+0x322/0x780 handle_softirqs+0x16a/0x550 irq_exit_rcu+0xaf/0xe0 sysvec_apic_timer_interrupt+0x70/0x80 </IRQ> ... Allocated by task 141: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x7f/0x90 __kmalloc_node_track_caller_noprof+0x198/0x430 devm_kmalloc+0x7b/0x1e0 tc358743_probe+0xb7/0x610 i2c_device_probe+0x51d/0x880 really_probe+0x1ca/0x5c0 __driver_probe_device+0x248/0x310 driver_probe_device+0x44/0x120 __device_attach_driver+0x174/0x220 bus_for_each_drv+0x100/0x190 __device_attach+0x206/0x370 bus_probe_device+0x123/0x170 device_add+0xd25/0x1470 i2c_new_client_device+0x7a0/0xcd0 do_one_initcall+0x89/0x300 do_init_module+0x29d/0x7f0 load_module+0x4f48/0x69e0 init_module_from_file+0xe4/0x150 idempotent_init_module+0x320/0x670 __x64_sys_finit_module+0xbd/0x120 do_syscall_64+0xac/0x280 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 141: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3a/0x60 __kasan_slab_free+0x3f/0x50 kfree+0x137/0x370 release_nodes+0xa4/0x100 devres_release_group+0x1b2/0x380 i2c_device_probe+0x694/0x880 really_probe+0x1ca/0x5c0 __driver_probe_device+0x248/0x310 driver_probe_device+0x44/0x120 __device_attach_driver+0x174/0x220 bus_for_each_drv+0x100/0x190 __device_attach+0x206/0x370 bus_probe_device+0x123/0x170 device_add+0xd25/0x1470 i2c_new_client_device+0x7a0/0xcd0 do_one_initcall+0x89/0x300 do_init_module+0x29d/0x7f0 load_module+0x4f48/0x69e0 init_module_from_file+0xe4/0x150 idempotent_init_module+0x320/0x670 __x64_sys_finit_module+0xbd/0x120 do_syscall_64+0xac/0x280 entry_SYSCALL_64_after_hwframe+0x77/0x7f ... Replace timer_delete() with timer_delete_sync() and cancel_delayed_work() with cancel_delayed_work_sync() to ensure proper termination of timer and work items before resource cleanup. This bug was initially identified through static analysis. For reproduction and testing, I created a functional emulation of the tc358743 device via a kernel module and introduced faults through the debugfs interface. Fixes: 869f38ae07f7 ("media: i2c: tc358743: Fix crash in the probe error path when using polling") Fixes: d32d98642de6 ("[media] Driver for Toshiba TC358743 HDMI to CSI-2 bridge") Cc: stable(a)vger.kernel.org Signed-off-by: Duoming Zhou <duoming(a)zju.edu.cn> Signed-off-by: Hans Verkuil <hverkuil+cisco(a)kernel.org> diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c index aa02a5a6ae3e..a0ca19359c43 100644 --- a/drivers/media/i2c/tc358743.c +++ b/drivers/media/i2c/tc358743.c @@ -2326,10 +2326,10 @@ static int tc358743_probe(struct i2c_client *client) err_work_queues: cec_unregister_adapter(state->cec_adap); if (!state->i2c_client->irq) { - timer_delete(&state->timer); + timer_delete_sync(&state->timer); flush_work(&state->work_i2c_poll); } - cancel_delayed_work(&state->delayed_work_enable_hotplug); + cancel_delayed_work_sync(&state->delayed_work_enable_hotplug); mutex_destroy(&state->confctl_mutex); err_hdl: media_entity_cleanup(&sd->entity);

1 month, 3 weeks

2
1
0 0

FAILED: patch "[PATCH] media: tuner: xc5000: Fix use-after-free in xc5000_release

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x 40b7a19f321e65789612ebaca966472055dab48c # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100338-ambulance-swaddling-4b2b@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 40b7a19f321e65789612ebaca966472055dab48c Mon Sep 17 00:00:00 2001 From: Duoming Zhou <duoming(a)zju.edu.cn> Date: Wed, 17 Sep 2025 17:56:08 +0800 Subject: [PATCH] media: tuner: xc5000: Fix use-after-free in xc5000_release The original code uses cancel_delayed_work() in xc5000_release(), which does not guarantee that the delayed work item timer_sleep has fully completed if it was already running. This leads to use-after-free scenarios where xc5000_release() may free the xc5000_priv while timer_sleep is still active and attempts to dereference the xc5000_priv. A typical race condition is illustrated below: CPU 0 (release thread) | CPU 1 (delayed work callback) xc5000_release() | xc5000_do_timer_sleep() cancel_delayed_work() | hybrid_tuner_release_state(priv) | kfree(priv) | | priv = container_of() // UAF Replace cancel_delayed_work() with cancel_delayed_work_sync() to ensure that the timer_sleep is properly canceled before the xc5000_priv memory is deallocated. A deadlock concern was considered: xc5000_release() is called in a process context and is not holding any locks that the timer_sleep work item might also need. Therefore, the use of the _sync() variant is safe here. This bug was initially identified through static analysis. Fixes: f7a27ff1fb77 ("[media] xc5000: delay tuner sleep to 5 seconds") Cc: stable(a)vger.kernel.org Signed-off-by: Duoming Zhou <duoming(a)zju.edu.cn> Signed-off-by: Hans Verkuil <hverkuil+cisco(a)kernel.org> [hverkuil: fix typo in Subject: tunner -> tuner] diff --git a/drivers/media/tuners/xc5000.c b/drivers/media/tuners/xc5000.c index bf4ff461e082..a28481edd22e 100644 --- a/drivers/media/tuners/xc5000.c +++ b/drivers/media/tuners/xc5000.c @@ -1304,7 +1304,7 @@ static void xc5000_release(struct dvb_frontend *fe) mutex_lock(&xc5000_list_mutex); if (priv) { - cancel_delayed_work(&priv->timer_sleep); + cancel_delayed_work_sync(&priv->timer_sleep); hybrid_tuner_release_state(priv); }

1 month, 3 weeks

2
2
0 0

S/PDIF not detected anymore / regression on recent kernel 6.7 ?

by Serge SIMON

Dear Kernel maintainers, I think i'm encountering (for the first time in years !) a regression with the "6.7.arch3-1" kernel (whereas no issues with "6.6.10.arch1-1", on which i reverted). I'm running a (up-to-date, and non-LTS) ARCHLINUX desktop, on a ASUS B560-I motherboard, with 3 monitors (attached to a 4-HDMI outputs card), plus an audio S/PDIF optic output at motherboard level. With the latest kernel, the S/PIDF optic output of the motherboard is NOT detected anymore (and i haven't been able to see / find anything in the logs at quick glance, neither journalctl -xe nor dmesg). Once reverted to 6.6.10, everything is fine again. For example, in a working situation (6.6.10), i have : cat /proc/asound/pcm 00-00: ALC1220 Analog : ALC1220 Analog : playback 1 : capture 1 00-01: ALC1220 Digital : ALC1220 Digital : playback 1 00-02: ALC1220 Alt Analog : ALC1220 Alt Analog : capture 1 01-03: HDMI 0 : HDMI 0 : playback 1 01-07: HDMI 1 : HDMI 1 : playback 1 01-08: HDMI 2 : HDMI 2 : playback 1 01-09: HDMI 3 : HDMI 3 : playback 1 Whereas while on the latest 6.7 kernel, i only had the 4 HDMI lines (linked to a NVIDIA T600 card, with 4 HDMI outputs) and not the three first ones (attached to the motherboard). (of course i did several tests with 6.7, reboot, ... without any changes) Any idea ? Best regards -- Serge.

1 month, 3 weeks

4
7
0 0

FAILED: patch "[PATCH] media: i2c: tc358743: Fix use-after-free bugs caused by" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 79d10f4f21a92e459b2276a77be62c59c1502c9d # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100331-junior-federal-3e04@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 79d10f4f21a92e459b2276a77be62c59c1502c9d Mon Sep 17 00:00:00 2001 From: Duoming Zhou <duoming(a)zju.edu.cn> Date: Wed, 17 Sep 2025 17:57:42 +0800 Subject: [PATCH] media: i2c: tc358743: Fix use-after-free bugs caused by orphan timer in probe The state->timer is a cyclic timer that schedules work_i2c_poll and delayed_work_enable_hotplug, while rearming itself. Using timer_delete() fails to guarantee the timer isn't still running when destroyed, similarly cancel_delayed_work() cannot ensure delayed_work_enable_hotplug has terminated if already executing. During probe failure after timer initialization, these may continue running as orphans and reference the already-freed tc358743_state object through tc358743_irq_poll_timer. The following is the trace captured by KASAN. BUG: KASAN: slab-use-after-free in __run_timer_base.part.0+0x7d7/0x8c0 Write of size 8 at addr ffff88800ded83c8 by task swapper/1/0 ... Call Trace: <IRQ> dump_stack_lvl+0x55/0x70 print_report+0xcf/0x610 ? __pfx_sched_balance_find_src_group+0x10/0x10 ? __run_timer_base.part.0+0x7d7/0x8c0 kasan_report+0xb8/0xf0 ? __run_timer_base.part.0+0x7d7/0x8c0 __run_timer_base.part.0+0x7d7/0x8c0 ? rcu_sched_clock_irq+0xb06/0x27d0 ? __pfx___run_timer_base.part.0+0x10/0x10 ? try_to_wake_up+0xb15/0x1960 ? tmigr_update_events+0x280/0x740 ? _raw_spin_lock_irq+0x80/0xe0 ? __pfx__raw_spin_lock_irq+0x10/0x10 tmigr_handle_remote_up+0x603/0x7e0 ? __pfx_tmigr_handle_remote_up+0x10/0x10 ? sched_balance_trigger+0x98/0x9f0 ? sched_tick+0x221/0x5a0 ? _raw_spin_lock_irq+0x80/0xe0 ? __pfx__raw_spin_lock_irq+0x10/0x10 ? tick_nohz_handler+0x339/0x440 ? __pfx_tmigr_handle_remote_up+0x10/0x10 __walk_groups.isra.0+0x42/0x150 tmigr_handle_remote+0x1f4/0x2e0 ? __pfx_tmigr_handle_remote+0x10/0x10 ? ktime_get+0x60/0x140 ? lapic_next_event+0x11/0x20 ? clockevents_program_event+0x1d4/0x2a0 ? hrtimer_interrupt+0x322/0x780 handle_softirqs+0x16a/0x550 irq_exit_rcu+0xaf/0xe0 sysvec_apic_timer_interrupt+0x70/0x80 </IRQ> ... Allocated by task 141: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x7f/0x90 __kmalloc_node_track_caller_noprof+0x198/0x430 devm_kmalloc+0x7b/0x1e0 tc358743_probe+0xb7/0x610 i2c_device_probe+0x51d/0x880 really_probe+0x1ca/0x5c0 __driver_probe_device+0x248/0x310 driver_probe_device+0x44/0x120 __device_attach_driver+0x174/0x220 bus_for_each_drv+0x100/0x190 __device_attach+0x206/0x370 bus_probe_device+0x123/0x170 device_add+0xd25/0x1470 i2c_new_client_device+0x7a0/0xcd0 do_one_initcall+0x89/0x300 do_init_module+0x29d/0x7f0 load_module+0x4f48/0x69e0 init_module_from_file+0xe4/0x150 idempotent_init_module+0x320/0x670 __x64_sys_finit_module+0xbd/0x120 do_syscall_64+0xac/0x280 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 141: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3a/0x60 __kasan_slab_free+0x3f/0x50 kfree+0x137/0x370 release_nodes+0xa4/0x100 devres_release_group+0x1b2/0x380 i2c_device_probe+0x694/0x880 really_probe+0x1ca/0x5c0 __driver_probe_device+0x248/0x310 driver_probe_device+0x44/0x120 __device_attach_driver+0x174/0x220 bus_for_each_drv+0x100/0x190 __device_attach+0x206/0x370 bus_probe_device+0x123/0x170 device_add+0xd25/0x1470 i2c_new_client_device+0x7a0/0xcd0 do_one_initcall+0x89/0x300 do_init_module+0x29d/0x7f0 load_module+0x4f48/0x69e0 init_module_from_file+0xe4/0x150 idempotent_init_module+0x320/0x670 __x64_sys_finit_module+0xbd/0x120 do_syscall_64+0xac/0x280 entry_SYSCALL_64_after_hwframe+0x77/0x7f ... Replace timer_delete() with timer_delete_sync() and cancel_delayed_work() with cancel_delayed_work_sync() to ensure proper termination of timer and work items before resource cleanup. This bug was initially identified through static analysis. For reproduction and testing, I created a functional emulation of the tc358743 device via a kernel module and introduced faults through the debugfs interface. Fixes: 869f38ae07f7 ("media: i2c: tc358743: Fix crash in the probe error path when using polling") Fixes: d32d98642de6 ("[media] Driver for Toshiba TC358743 HDMI to CSI-2 bridge") Cc: stable(a)vger.kernel.org Signed-off-by: Duoming Zhou <duoming(a)zju.edu.cn> Signed-off-by: Hans Verkuil <hverkuil+cisco(a)kernel.org> diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c index aa02a5a6ae3e..a0ca19359c43 100644 --- a/drivers/media/i2c/tc358743.c +++ b/drivers/media/i2c/tc358743.c @@ -2326,10 +2326,10 @@ static int tc358743_probe(struct i2c_client *client) err_work_queues: cec_unregister_adapter(state->cec_adap); if (!state->i2c_client->irq) { - timer_delete(&state->timer); + timer_delete_sync(&state->timer); flush_work(&state->work_i2c_poll); } - cancel_delayed_work(&state->delayed_work_enable_hotplug); + cancel_delayed_work_sync(&state->delayed_work_enable_hotplug); mutex_destroy(&state->confctl_mutex); err_hdl: media_entity_cleanup(&sd->entity);

1 month, 3 weeks

2
1
0 0

FAILED: patch "[PATCH] wifi: rtw89: fix use-after-free in" failed to apply to 6.12-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.12-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y git checkout FETCH_HEAD git cherry-pick -x 3e31a6bc07312b448fad3b45de578471f86f0e77 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100342-eternity-attractor-07ca@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 3e31a6bc07312b448fad3b45de578471f86f0e77 Mon Sep 17 00:00:00 2001 From: Fedor Pchelkin <pchelkin(a)ispras.ru> Date: Sat, 20 Sep 2025 00:08:47 +0300 Subject: [PATCH] wifi: rtw89: fix use-after-free in rtw89_core_tx_kick_off_and_wait() There is a bug observed when rtw89_core_tx_kick_off_and_wait() tries to access already freed skb_data: BUG: KFENCE: use-after-free write in rtw89_core_tx_kick_off_and_wait drivers/net/wireless/realtek/rtw89/core.c:1110 CPU: 6 UID: 0 PID: 41377 Comm: kworker/u64:24 Not tainted 6.17.0-rc1+ #1 PREEMPT(lazy) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS edk2-20250523-14.fc42 05/23/2025 Workqueue: events_unbound cfg80211_wiphy_work [cfg80211] Use-after-free write at 0x0000000020309d9d (in kfence-#251): rtw89_core_tx_kick_off_and_wait drivers/net/wireless/realtek/rtw89/core.c:1110 rtw89_core_scan_complete drivers/net/wireless/realtek/rtw89/core.c:5338 rtw89_hw_scan_complete_cb drivers/net/wireless/realtek/rtw89/fw.c:7979 rtw89_chanctx_proceed_cb drivers/net/wireless/realtek/rtw89/chan.c:3165 rtw89_chanctx_proceed drivers/net/wireless/realtek/rtw89/chan.h:141 rtw89_hw_scan_complete drivers/net/wireless/realtek/rtw89/fw.c:8012 rtw89_mac_c2h_scanofld_rsp drivers/net/wireless/realtek/rtw89/mac.c:5059 rtw89_fw_c2h_work drivers/net/wireless/realtek/rtw89/fw.c:6758 process_one_work kernel/workqueue.c:3241 worker_thread kernel/workqueue.c:3400 kthread kernel/kthread.c:463 ret_from_fork arch/x86/kernel/process.c:154 ret_from_fork_asm arch/x86/entry/entry_64.S:258 kfence-#251: 0x0000000056e2393d-0x000000009943cb62, size=232, cache=skbuff_head_cache allocated by task 41377 on cpu 6 at 77869.159548s (0.009551s ago): __alloc_skb net/core/skbuff.c:659 __netdev_alloc_skb net/core/skbuff.c:734 ieee80211_nullfunc_get net/mac80211/tx.c:5844 rtw89_core_send_nullfunc drivers/net/wireless/realtek/rtw89/core.c:3431 rtw89_core_scan_complete drivers/net/wireless/realtek/rtw89/core.c:5338 rtw89_hw_scan_complete_cb drivers/net/wireless/realtek/rtw89/fw.c:7979 rtw89_chanctx_proceed_cb drivers/net/wireless/realtek/rtw89/chan.c:3165 rtw89_chanctx_proceed drivers/net/wireless/realtek/rtw89/chan.c:3194 rtw89_hw_scan_complete drivers/net/wireless/realtek/rtw89/fw.c:8012 rtw89_mac_c2h_scanofld_rsp drivers/net/wireless/realtek/rtw89/mac.c:5059 rtw89_fw_c2h_work drivers/net/wireless/realtek/rtw89/fw.c:6758 process_one_work kernel/workqueue.c:3241 worker_thread kernel/workqueue.c:3400 kthread kernel/kthread.c:463 ret_from_fork arch/x86/kernel/process.c:154 ret_from_fork_asm arch/x86/entry/entry_64.S:258 freed by task 1045 on cpu 9 at 77869.168393s (0.001557s ago): ieee80211_tx_status_skb net/mac80211/status.c:1117 rtw89_pci_release_txwd_skb drivers/net/wireless/realtek/rtw89/pci.c:564 rtw89_pci_release_tx_skbs.isra.0 drivers/net/wireless/realtek/rtw89/pci.c:651 rtw89_pci_release_tx drivers/net/wireless/realtek/rtw89/pci.c:676 rtw89_pci_napi_poll drivers/net/wireless/realtek/rtw89/pci.c:4238 __napi_poll net/core/dev.c:7495 net_rx_action net/core/dev.c:7557 net/core/dev.c:7684 handle_softirqs kernel/softirq.c:580 do_softirq.part.0 kernel/softirq.c:480 __local_bh_enable_ip kernel/softirq.c:407 rtw89_pci_interrupt_threadfn drivers/net/wireless/realtek/rtw89/pci.c:927 irq_thread_fn kernel/irq/manage.c:1133 irq_thread kernel/irq/manage.c:1257 kthread kernel/kthread.c:463 ret_from_fork arch/x86/kernel/process.c:154 ret_from_fork_asm arch/x86/entry/entry_64.S:258 It is a consequence of a race between the waiting and the signaling side of the completion: Waiting thread Completing thread rtw89_core_tx_kick_off_and_wait() rcu_assign_pointer(skb_data->wait, wait) /* start waiting */ wait_for_completion_timeout() rtw89_pci_tx_status() rtw89_core_tx_wait_complete() rcu_read_lock() /* signals completion and * proceeds further */ complete(&wait->completion) rcu_read_unlock() ... /* frees skb_data */ ieee80211_tx_status_ni() /* returns (exit status doesn't matter) */ wait_for_completion_timeout() ... /* accesses the already freed skb_data */ rcu_assign_pointer(skb_data->wait, NULL) The completing side might proceed and free the underlying skb even before the waiting side is fully awoken and run to execution. Actually the race happens regardless of wait_for_completion_timeout() exit status, e.g. the waiting side may hit a timeout and the concurrent completing side is still able to free the skb. Skbs which are sent by rtw89_core_tx_kick_off_and_wait() are owned by the driver. They don't come from core ieee80211 stack so no need to pass them to ieee80211_tx_status_ni() on completing side. Introduce a work function which will act as a garbage collector for rtw89_tx_wait_info objects and the associated skbs. Thus no potentially heavy locks are required on the completing side. Found by Linux Verification Center (linuxtesting.org). Fixes: 1ae5ca615285 ("wifi: rtw89: add function to wait for completion of TX skbs") Cc: stable(a)vger.kernel.org Suggested-by: Zong-Zhe Yang <kevin_yang(a)realtek.com> Signed-off-by: Fedor Pchelkin <pchelkin(a)ispras.ru> Acked-by: Ping-Ke Shih <pkshih(a)realtek.com> Signed-off-by: Ping-Ke Shih <pkshih(a)realtek.com> Link: https://patch.msgid.link/20250919210852.823912-2-pchelkin@ispras.ru diff --git a/drivers/net/wireless/realtek/rtw89/core.c b/drivers/net/wireless/realtek/rtw89/core.c index fe059c4a6b55..ec467ae0e9e6 100644 --- a/drivers/net/wireless/realtek/rtw89/core.c +++ b/drivers/net/wireless/realtek/rtw89/core.c @@ -1135,6 +1135,14 @@ rtw89_core_tx_update_desc_info(struct rtw89_dev *rtwdev, } } +static void rtw89_tx_wait_work(struct wiphy *wiphy, struct wiphy_work *work) +{ + struct rtw89_dev *rtwdev = container_of(work, struct rtw89_dev, + tx_wait_work.work); + + rtw89_tx_wait_list_clear(rtwdev); +} + void rtw89_core_tx_kick_off(struct rtw89_dev *rtwdev, u8 qsel) { u8 ch_dma; @@ -1152,6 +1160,8 @@ int rtw89_core_tx_kick_off_and_wait(struct rtw89_dev *rtwdev, struct sk_buff *sk unsigned long time_left; int ret = 0; + lockdep_assert_wiphy(rtwdev->hw->wiphy); + wait = kzalloc(sizeof(*wait), GFP_KERNEL); if (!wait) { rtw89_core_tx_kick_off(rtwdev, qsel); @@ -1159,18 +1169,23 @@ int rtw89_core_tx_kick_off_and_wait(struct rtw89_dev *rtwdev, struct sk_buff *sk } init_completion(&wait->completion); + wait->skb = skb; rcu_assign_pointer(skb_data->wait, wait); rtw89_core_tx_kick_off(rtwdev, qsel); time_left = wait_for_completion_timeout(&wait->completion, msecs_to_jiffies(timeout)); - if (time_left == 0) - ret = -ETIMEDOUT; - else if (!wait->tx_done) - ret = -EAGAIN; - rcu_assign_pointer(skb_data->wait, NULL); - kfree_rcu(wait, rcu_head); + if (time_left == 0) { + ret = -ETIMEDOUT; + list_add_tail(&wait->list, &rtwdev->tx_waits); + wiphy_delayed_work_queue(rtwdev->hw->wiphy, &rtwdev->tx_wait_work, + RTW89_TX_WAIT_WORK_TIMEOUT); + } else { + if (!wait->tx_done) + ret = -EAGAIN; + rtw89_tx_wait_release(wait); + } return ret; } @@ -5548,6 +5563,7 @@ void rtw89_core_stop(struct rtw89_dev *rtwdev) wiphy_work_cancel(wiphy, &btc->dhcp_notify_work); wiphy_work_cancel(wiphy, &btc->icmp_notify_work); cancel_delayed_work_sync(&rtwdev->txq_reinvoke_work); + wiphy_delayed_work_cancel(wiphy, &rtwdev->tx_wait_work); wiphy_delayed_work_cancel(wiphy, &rtwdev->track_work); wiphy_delayed_work_cancel(wiphy, &rtwdev->track_ps_work); wiphy_delayed_work_cancel(wiphy, &rtwdev->chanctx_work); @@ -5773,6 +5789,7 @@ int rtw89_core_init(struct rtw89_dev *rtwdev) INIT_LIST_HEAD(&rtwdev->scan_info.pkt_list[band]); } INIT_LIST_HEAD(&rtwdev->scan_info.chan_list); + INIT_LIST_HEAD(&rtwdev->tx_waits); INIT_WORK(&rtwdev->ba_work, rtw89_core_ba_work); INIT_WORK(&rtwdev->txq_work, rtw89_core_txq_work); INIT_DELAYED_WORK(&rtwdev->txq_reinvoke_work, rtw89_core_txq_reinvoke_work); @@ -5784,6 +5801,7 @@ int rtw89_core_init(struct rtw89_dev *rtwdev) wiphy_delayed_work_init(&rtwdev->coex_rfk_chk_work, rtw89_coex_rfk_chk_work); wiphy_delayed_work_init(&rtwdev->cfo_track_work, rtw89_phy_cfo_track_work); wiphy_delayed_work_init(&rtwdev->mcc_prepare_done_work, rtw89_mcc_prepare_done_work); + wiphy_delayed_work_init(&rtwdev->tx_wait_work, rtw89_tx_wait_work); INIT_DELAYED_WORK(&rtwdev->forbid_ba_work, rtw89_forbid_ba_work); wiphy_delayed_work_init(&rtwdev->antdiv_work, rtw89_phy_antdiv_work); rtwdev->txq_wq = alloc_workqueue("rtw89_tx_wq", WQ_UNBOUND | WQ_HIGHPRI, 0); diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h index 3d4ad2ffb75c..d15fa70eb4dc 100644 --- a/drivers/net/wireless/realtek/rtw89/core.h +++ b/drivers/net/wireless/realtek/rtw89/core.h @@ -3507,9 +3507,12 @@ struct rtw89_phy_rate_pattern { bool enable; }; +#define RTW89_TX_WAIT_WORK_TIMEOUT msecs_to_jiffies(500) struct rtw89_tx_wait_info { struct rcu_head rcu_head; + struct list_head list; struct completion completion; + struct sk_buff *skb; bool tx_done; }; @@ -6000,6 +6003,9 @@ struct rtw89_dev { /* used to protect rpwm */ spinlock_t rpwm_lock; + struct list_head tx_waits; + struct wiphy_delayed_work tx_wait_work; + struct rtw89_cam_info cam_info; struct sk_buff_head c2h_queue; @@ -6256,6 +6262,26 @@ rtw89_assoc_link_rcu_dereference(struct rtw89_dev *rtwdev, u8 macid) list_first_entry_or_null(&p->dlink_pool, typeof(*p->links_inst), dlink_schd); \ }) +static inline void rtw89_tx_wait_release(struct rtw89_tx_wait_info *wait) +{ + dev_kfree_skb_any(wait->skb); + kfree_rcu(wait, rcu_head); +} + +static inline void rtw89_tx_wait_list_clear(struct rtw89_dev *rtwdev) +{ + struct rtw89_tx_wait_info *wait, *tmp; + + lockdep_assert_wiphy(rtwdev->hw->wiphy); + + list_for_each_entry_safe(wait, tmp, &rtwdev->tx_waits, list) { + if (!completion_done(&wait->completion)) + continue; + list_del(&wait->list); + rtw89_tx_wait_release(wait); + } +} + static inline int rtw89_hci_tx_write(struct rtw89_dev *rtwdev, struct rtw89_core_tx_request *tx_req) { @@ -6265,6 +6291,7 @@ static inline int rtw89_hci_tx_write(struct rtw89_dev *rtwdev, static inline void rtw89_hci_reset(struct rtw89_dev *rtwdev) { rtwdev->hci.ops->reset(rtwdev); + rtw89_tx_wait_list_clear(rtwdev); } static inline int rtw89_hci_start(struct rtw89_dev *rtwdev) @@ -7345,11 +7372,12 @@ static inline struct sk_buff *rtw89_alloc_skb_for_rx(struct rtw89_dev *rtwdev, return dev_alloc_skb(length); } -static inline void rtw89_core_tx_wait_complete(struct rtw89_dev *rtwdev, +static inline bool rtw89_core_tx_wait_complete(struct rtw89_dev *rtwdev, struct rtw89_tx_skb_data *skb_data, bool tx_done) { struct rtw89_tx_wait_info *wait; + bool ret = false; rcu_read_lock(); @@ -7357,11 +7385,14 @@ static inline void rtw89_core_tx_wait_complete(struct rtw89_dev *rtwdev, if (!wait) goto out; + ret = true; wait->tx_done = tx_done; - complete(&wait->completion); + /* Don't access skb anymore after completion */ + complete_all(&wait->completion); out: rcu_read_unlock(); + return ret; } static inline bool rtw89_is_mlo_1_1(struct rtw89_dev *rtwdev) diff --git a/drivers/net/wireless/realtek/rtw89/pci.c b/drivers/net/wireless/realtek/rtw89/pci.c index c8286eb84276..8dd91d867ea6 100644 --- a/drivers/net/wireless/realtek/rtw89/pci.c +++ b/drivers/net/wireless/realtek/rtw89/pci.c @@ -464,7 +464,8 @@ static void rtw89_pci_tx_status(struct rtw89_dev *rtwdev, struct rtw89_tx_skb_data *skb_data = RTW89_TX_SKB_CB(skb); struct ieee80211_tx_info *info; - rtw89_core_tx_wait_complete(rtwdev, skb_data, tx_status == RTW89_TX_DONE); + if (rtw89_core_tx_wait_complete(rtwdev, skb_data, tx_status == RTW89_TX_DONE)) + return; info = IEEE80211_SKB_CB(skb); ieee80211_tx_info_clear_status(info); diff --git a/drivers/net/wireless/realtek/rtw89/ser.c b/drivers/net/wireless/realtek/rtw89/ser.c index bb39fdbcba0d..fe7beff8c424 100644 --- a/drivers/net/wireless/realtek/rtw89/ser.c +++ b/drivers/net/wireless/realtek/rtw89/ser.c @@ -502,7 +502,9 @@ static void ser_reset_trx_st_hdl(struct rtw89_ser *ser, u8 evt) } drv_stop_rx(ser); + wiphy_lock(wiphy); drv_trx_reset(ser); + wiphy_unlock(wiphy); /* wait m3 */ hal_send_m2_event(ser);

1 month, 3 weeks

2
1
0 0

FAILED: patch "[PATCH] media: i2c: tc358743: Fix use-after-free bugs caused by" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x 79d10f4f21a92e459b2276a77be62c59c1502c9d # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100330-bootie-slurp-7058@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 79d10f4f21a92e459b2276a77be62c59c1502c9d Mon Sep 17 00:00:00 2001 From: Duoming Zhou <duoming(a)zju.edu.cn> Date: Wed, 17 Sep 2025 17:57:42 +0800 Subject: [PATCH] media: i2c: tc358743: Fix use-after-free bugs caused by orphan timer in probe The state->timer is a cyclic timer that schedules work_i2c_poll and delayed_work_enable_hotplug, while rearming itself. Using timer_delete() fails to guarantee the timer isn't still running when destroyed, similarly cancel_delayed_work() cannot ensure delayed_work_enable_hotplug has terminated if already executing. During probe failure after timer initialization, these may continue running as orphans and reference the already-freed tc358743_state object through tc358743_irq_poll_timer. The following is the trace captured by KASAN. BUG: KASAN: slab-use-after-free in __run_timer_base.part.0+0x7d7/0x8c0 Write of size 8 at addr ffff88800ded83c8 by task swapper/1/0 ... Call Trace: <IRQ> dump_stack_lvl+0x55/0x70 print_report+0xcf/0x610 ? __pfx_sched_balance_find_src_group+0x10/0x10 ? __run_timer_base.part.0+0x7d7/0x8c0 kasan_report+0xb8/0xf0 ? __run_timer_base.part.0+0x7d7/0x8c0 __run_timer_base.part.0+0x7d7/0x8c0 ? rcu_sched_clock_irq+0xb06/0x27d0 ? __pfx___run_timer_base.part.0+0x10/0x10 ? try_to_wake_up+0xb15/0x1960 ? tmigr_update_events+0x280/0x740 ? _raw_spin_lock_irq+0x80/0xe0 ? __pfx__raw_spin_lock_irq+0x10/0x10 tmigr_handle_remote_up+0x603/0x7e0 ? __pfx_tmigr_handle_remote_up+0x10/0x10 ? sched_balance_trigger+0x98/0x9f0 ? sched_tick+0x221/0x5a0 ? _raw_spin_lock_irq+0x80/0xe0 ? __pfx__raw_spin_lock_irq+0x10/0x10 ? tick_nohz_handler+0x339/0x440 ? __pfx_tmigr_handle_remote_up+0x10/0x10 __walk_groups.isra.0+0x42/0x150 tmigr_handle_remote+0x1f4/0x2e0 ? __pfx_tmigr_handle_remote+0x10/0x10 ? ktime_get+0x60/0x140 ? lapic_next_event+0x11/0x20 ? clockevents_program_event+0x1d4/0x2a0 ? hrtimer_interrupt+0x322/0x780 handle_softirqs+0x16a/0x550 irq_exit_rcu+0xaf/0xe0 sysvec_apic_timer_interrupt+0x70/0x80 </IRQ> ... Allocated by task 141: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x7f/0x90 __kmalloc_node_track_caller_noprof+0x198/0x430 devm_kmalloc+0x7b/0x1e0 tc358743_probe+0xb7/0x610 i2c_device_probe+0x51d/0x880 really_probe+0x1ca/0x5c0 __driver_probe_device+0x248/0x310 driver_probe_device+0x44/0x120 __device_attach_driver+0x174/0x220 bus_for_each_drv+0x100/0x190 __device_attach+0x206/0x370 bus_probe_device+0x123/0x170 device_add+0xd25/0x1470 i2c_new_client_device+0x7a0/0xcd0 do_one_initcall+0x89/0x300 do_init_module+0x29d/0x7f0 load_module+0x4f48/0x69e0 init_module_from_file+0xe4/0x150 idempotent_init_module+0x320/0x670 __x64_sys_finit_module+0xbd/0x120 do_syscall_64+0xac/0x280 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 141: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3a/0x60 __kasan_slab_free+0x3f/0x50 kfree+0x137/0x370 release_nodes+0xa4/0x100 devres_release_group+0x1b2/0x380 i2c_device_probe+0x694/0x880 really_probe+0x1ca/0x5c0 __driver_probe_device+0x248/0x310 driver_probe_device+0x44/0x120 __device_attach_driver+0x174/0x220 bus_for_each_drv+0x100/0x190 __device_attach+0x206/0x370 bus_probe_device+0x123/0x170 device_add+0xd25/0x1470 i2c_new_client_device+0x7a0/0xcd0 do_one_initcall+0x89/0x300 do_init_module+0x29d/0x7f0 load_module+0x4f48/0x69e0 init_module_from_file+0xe4/0x150 idempotent_init_module+0x320/0x670 __x64_sys_finit_module+0xbd/0x120 do_syscall_64+0xac/0x280 entry_SYSCALL_64_after_hwframe+0x77/0x7f ... Replace timer_delete() with timer_delete_sync() and cancel_delayed_work() with cancel_delayed_work_sync() to ensure proper termination of timer and work items before resource cleanup. This bug was initially identified through static analysis. For reproduction and testing, I created a functional emulation of the tc358743 device via a kernel module and introduced faults through the debugfs interface. Fixes: 869f38ae07f7 ("media: i2c: tc358743: Fix crash in the probe error path when using polling") Fixes: d32d98642de6 ("[media] Driver for Toshiba TC358743 HDMI to CSI-2 bridge") Cc: stable(a)vger.kernel.org Signed-off-by: Duoming Zhou <duoming(a)zju.edu.cn> Signed-off-by: Hans Verkuil <hverkuil+cisco(a)kernel.org> diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c index aa02a5a6ae3e..a0ca19359c43 100644 --- a/drivers/media/i2c/tc358743.c +++ b/drivers/media/i2c/tc358743.c @@ -2326,10 +2326,10 @@ static int tc358743_probe(struct i2c_client *client) err_work_queues: cec_unregister_adapter(state->cec_adap); if (!state->i2c_client->irq) { - timer_delete(&state->timer); + timer_delete_sync(&state->timer); flush_work(&state->work_i2c_poll); } - cancel_delayed_work(&state->delayed_work_enable_hotplug); + cancel_delayed_work_sync(&state->delayed_work_enable_hotplug); mutex_destroy(&state->confctl_mutex); err_hdl: media_entity_cleanup(&sd->entity);

1 month, 3 weeks

2
1
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FAILED: patch "[PATCH] media: i2c: tc358743: Fix use-after-free bugs caused by" failed to apply to 6.6-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x 79d10f4f21a92e459b2276a77be62c59c1502c9d # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100329-icy-unbroken-b3bb@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 79d10f4f21a92e459b2276a77be62c59c1502c9d Mon Sep 17 00:00:00 2001 From: Duoming Zhou <duoming(a)zju.edu.cn> Date: Wed, 17 Sep 2025 17:57:42 +0800 Subject: [PATCH] media: i2c: tc358743: Fix use-after-free bugs caused by orphan timer in probe The state->timer is a cyclic timer that schedules work_i2c_poll and delayed_work_enable_hotplug, while rearming itself. Using timer_delete() fails to guarantee the timer isn't still running when destroyed, similarly cancel_delayed_work() cannot ensure delayed_work_enable_hotplug has terminated if already executing. During probe failure after timer initialization, these may continue running as orphans and reference the already-freed tc358743_state object through tc358743_irq_poll_timer. The following is the trace captured by KASAN. BUG: KASAN: slab-use-after-free in __run_timer_base.part.0+0x7d7/0x8c0 Write of size 8 at addr ffff88800ded83c8 by task swapper/1/0 ... Call Trace: <IRQ> dump_stack_lvl+0x55/0x70 print_report+0xcf/0x610 ? __pfx_sched_balance_find_src_group+0x10/0x10 ? __run_timer_base.part.0+0x7d7/0x8c0 kasan_report+0xb8/0xf0 ? __run_timer_base.part.0+0x7d7/0x8c0 __run_timer_base.part.0+0x7d7/0x8c0 ? rcu_sched_clock_irq+0xb06/0x27d0 ? __pfx___run_timer_base.part.0+0x10/0x10 ? try_to_wake_up+0xb15/0x1960 ? tmigr_update_events+0x280/0x740 ? _raw_spin_lock_irq+0x80/0xe0 ? __pfx__raw_spin_lock_irq+0x10/0x10 tmigr_handle_remote_up+0x603/0x7e0 ? __pfx_tmigr_handle_remote_up+0x10/0x10 ? sched_balance_trigger+0x98/0x9f0 ? sched_tick+0x221/0x5a0 ? _raw_spin_lock_irq+0x80/0xe0 ? __pfx__raw_spin_lock_irq+0x10/0x10 ? tick_nohz_handler+0x339/0x440 ? __pfx_tmigr_handle_remote_up+0x10/0x10 __walk_groups.isra.0+0x42/0x150 tmigr_handle_remote+0x1f4/0x2e0 ? __pfx_tmigr_handle_remote+0x10/0x10 ? ktime_get+0x60/0x140 ? lapic_next_event+0x11/0x20 ? clockevents_program_event+0x1d4/0x2a0 ? hrtimer_interrupt+0x322/0x780 handle_softirqs+0x16a/0x550 irq_exit_rcu+0xaf/0xe0 sysvec_apic_timer_interrupt+0x70/0x80 </IRQ> ... Allocated by task 141: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x7f/0x90 __kmalloc_node_track_caller_noprof+0x198/0x430 devm_kmalloc+0x7b/0x1e0 tc358743_probe+0xb7/0x610 i2c_device_probe+0x51d/0x880 really_probe+0x1ca/0x5c0 __driver_probe_device+0x248/0x310 driver_probe_device+0x44/0x120 __device_attach_driver+0x174/0x220 bus_for_each_drv+0x100/0x190 __device_attach+0x206/0x370 bus_probe_device+0x123/0x170 device_add+0xd25/0x1470 i2c_new_client_device+0x7a0/0xcd0 do_one_initcall+0x89/0x300 do_init_module+0x29d/0x7f0 load_module+0x4f48/0x69e0 init_module_from_file+0xe4/0x150 idempotent_init_module+0x320/0x670 __x64_sys_finit_module+0xbd/0x120 do_syscall_64+0xac/0x280 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 141: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3a/0x60 __kasan_slab_free+0x3f/0x50 kfree+0x137/0x370 release_nodes+0xa4/0x100 devres_release_group+0x1b2/0x380 i2c_device_probe+0x694/0x880 really_probe+0x1ca/0x5c0 __driver_probe_device+0x248/0x310 driver_probe_device+0x44/0x120 __device_attach_driver+0x174/0x220 bus_for_each_drv+0x100/0x190 __device_attach+0x206/0x370 bus_probe_device+0x123/0x170 device_add+0xd25/0x1470 i2c_new_client_device+0x7a0/0xcd0 do_one_initcall+0x89/0x300 do_init_module+0x29d/0x7f0 load_module+0x4f48/0x69e0 init_module_from_file+0xe4/0x150 idempotent_init_module+0x320/0x670 __x64_sys_finit_module+0xbd/0x120 do_syscall_64+0xac/0x280 entry_SYSCALL_64_after_hwframe+0x77/0x7f ... Replace timer_delete() with timer_delete_sync() and cancel_delayed_work() with cancel_delayed_work_sync() to ensure proper termination of timer and work items before resource cleanup. This bug was initially identified through static analysis. For reproduction and testing, I created a functional emulation of the tc358743 device via a kernel module and introduced faults through the debugfs interface. Fixes: 869f38ae07f7 ("media: i2c: tc358743: Fix crash in the probe error path when using polling") Fixes: d32d98642de6 ("[media] Driver for Toshiba TC358743 HDMI to CSI-2 bridge") Cc: stable(a)vger.kernel.org Signed-off-by: Duoming Zhou <duoming(a)zju.edu.cn> Signed-off-by: Hans Verkuil <hverkuil+cisco(a)kernel.org> diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c index aa02a5a6ae3e..a0ca19359c43 100644 --- a/drivers/media/i2c/tc358743.c +++ b/drivers/media/i2c/tc358743.c @@ -2326,10 +2326,10 @@ static int tc358743_probe(struct i2c_client *client) err_work_queues: cec_unregister_adapter(state->cec_adap); if (!state->i2c_client->irq) { - timer_delete(&state->timer); + timer_delete_sync(&state->timer); flush_work(&state->work_i2c_poll); } - cancel_delayed_work(&state->delayed_work_enable_hotplug); + cancel_delayed_work_sync(&state->delayed_work_enable_hotplug); mutex_destroy(&state->confctl_mutex); err_hdl: media_entity_cleanup(&sd->entity);

1 month, 3 weeks

2
1
0 0

[PATCH] mm/mmap: Fix fsnotify_mmap_perm() call in vm_mmap_pgoff()

by Kiryl Shutsemau

From: Kiryl Shutsemau <kas(a)kernel.org> vm_mmap_pgoff() includes a fsnotify call that allows for pre-content hooks on mmap(). The fsnotify_mmap_perm() function takes, among other arguments, an offset in the file in the form of loff_t. However, vm_mmap_pgoff() has file offset in the form of pgoff. This offset needs to be converted before being passed to fsnotify_mmap_perm(). The conversion from pgoff to loff_t is incorrect. The pgoff value needs to be shifted left by PAGE_SHIFT to obtain loff_t, not right. This issue was identified through code inspection. Signed-off-by: Kiryl Shutsemau <kas(a)kernel.org> Fixes: 066e053fe208 ("fsnotify: add pre-content hooks on mmap()") Cc: stable(a)vger.kernel.org Cc: Josef Bacik <josef(a)toxicpanda.com> Cc: Amir Goldstein <amir73il(a)gmail.com> Cc: Jan Kara <jack(a)suse.cz> --- mm/util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/util.c b/mm/util.c index f814e6a59ab1..52a667157264 100644 --- a/mm/util.c +++ b/mm/util.c @@ -573,7 +573,7 @@ unsigned long vm_mmap_pgoff(struct file *file, unsigned long addr, ret = security_mmap_file(file, prot, flag); if (!ret) - ret = fsnotify_mmap_perm(file, prot, pgoff >> PAGE_SHIFT, len); + ret = fsnotify_mmap_perm(file, prot, pgoff << PAGE_SHIFT, len); if (!ret) { if (mmap_write_lock_killable(mm)) return -EINTR; -- 2.50.1

1 month, 3 weeks

3
3
0 0

[REGRESSION] stable-rc/linux-5.4.y: (build) ./arch/arm64/include/asm/memory.h:85:50: error: ‘KASAN_SHADOW_SCAL...

by KernelCI bot

Hello, New build issue found on stable-rc/linux-5.4.y: --- ./arch/arm64/include/asm/memory.h:85:50: error: ‘KASAN_SHADOW_SCALE_SHIFT’ undeclared (first use in this function) in arch/arm64/kernel/vdso32/vgettimeofday.o (arch/arm64/kernel/vdso32/Makefile:166) [logspec:kbuild,kbuild.compiler.error] --- - dashboard: https://d.kernelci.org/i/maestro:35fc997ccf1864d670c66eb7815463e470fe1fa9 - giturl: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git - commit HEAD: 2c0548712531f8b879edccf67949a8e5abe4e5e4 Log excerpt: ===================================================== CC32 arch/arm64/kernel/vdso32/vgettimeofday.o AS32 arch/arm64/kernel/vdso32/sigreturn.o HOSTCC arch/arm64/kernel/vdso32/../../../arm/vdso/vdsomunge In file included from ./arch/arm64/include/asm/thread_info.h:17, from ./include/linux/thread_info.h:39, from ./arch/arm64/include/asm/preempt.h:5, from ./include/linux/preempt.h:78, from ./include/linux/spinlock.h:51, from ./include/linux/seqlock.h:36, from ./include/linux/time.h:6, from /tmp/kci/linux/lib/vdso/gettimeofday.c:7, from <command-line>: ./arch/arm64/include/asm/memory.h: In function ‘kaslr_offset’: ./arch/arm64/include/asm/memory.h:85:50: error: ‘KASAN_SHADOW_SCALE_SHIFT’ undeclared (first use in this function) 85 | #define KASAN_SHADOW_END ((UL(1) << (64 - KASAN_SHADOW_SCALE_SHIFT)) \ | ^~~~~~~~~~~~~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:50:34: note: in expansion of macro ‘KASAN_SHADOW_END’ 50 | #define BPF_JIT_REGION_START (KASAN_SHADOW_END) | ^~~~~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:52:34: note: in expansion of macro ‘BPF_JIT_REGION_START’ 52 | #define BPF_JIT_REGION_END (BPF_JIT_REGION_START + BPF_JIT_REGION_SIZE) | ^~~~~~~~~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:54:34: note: in expansion of macro ‘BPF_JIT_REGION_END’ 54 | #define MODULES_VADDR (BPF_JIT_REGION_END) | ^~~~~~~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:53:34: note: in expansion of macro ‘MODULES_VADDR’ 53 | #define MODULES_END (MODULES_VADDR + MODULES_VSIZE) | ^~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:49:34: note: in expansion of macro ‘MODULES_END’ 49 | #define KIMAGE_VADDR (MODULES_END) | ^~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:193:31: note: in expansion of macro ‘KIMAGE_VADDR’ 193 | return kimage_vaddr - KIMAGE_VADDR; | ^~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:85:50: note: each undeclared identifier is reported only once for each function it appears in 85 | #define KASAN_SHADOW_END ((UL(1) << (64 - KASAN_SHADOW_SCALE_SHIFT)) \ | ^~~~~~~~~~~~~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:50:34: note: in expansion of macro ‘KASAN_SHADOW_END’ 50 | #define BPF_JIT_REGION_START (KASAN_SHADOW_END) | ^~~~~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:52:34: note: in expansion of macro ‘BPF_JIT_REGION_START’ 52 | #define BPF_JIT_REGION_END (BPF_JIT_REGION_START + BPF_JIT_REGION_SIZE) | ^~~~~~~~~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:54:34: note: in expansion of macro ‘BPF_JIT_REGION_END’ 54 | #define MODULES_VADDR (BPF_JIT_REGION_END) | ^~~~~~~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:53:34: note: in expansion of macro ‘MODULES_VADDR’ 53 | #define MODULES_END (MODULES_VADDR + MODULES_VSIZE) | ^~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:49:34: note: in expansion of macro ‘MODULES_END’ 49 | #define KIMAGE_VADDR (MODULES_END) | ^~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:193:31: note: in expansion of macro ‘KIMAGE_VADDR’ 193 | return kimage_vaddr - KIMAGE_VADDR; | ^~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h: In function ‘__tag_set’: ./arch/arm64/include/asm/memory.h:238:22: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] 238 | u64 __addr = (u64)addr & ~__tag_shifted(0xff); | ^ In file included from ./arch/arm64/include/asm/pgtable-hwdef.h:8, from ./arch/arm64/include/asm/processor.h:34, from ./arch/arm64/include/asm/elf.h:118, from ./include/linux/elf.h:5, from ./include/linux/elfnote.h:62, from arch/arm64/kernel/vdso32/note.c:11: ./arch/arm64/include/asm/memory.h: In function ‘kaslr_offset’: ./arch/arm64/include/asm/memory.h:85:50: error: ‘KASAN_SHADOW_SCALE_SHIFT’ undeclared (first use in this function) 85 | #define KASAN_SHADOW_END ((UL(1) << (64 - KASAN_SHADOW_SCALE_SHIFT)) \ | ^~~~~~~~~~~~~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:50:34: note: in expansion of macro ‘KASAN_SHADOW_END’ 50 | #define BPF_JIT_REGION_START (KASAN_SHADOW_END) | ^~~~~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:52:34: note: in expansion of macro ‘BPF_JIT_REGION_START’ 52 | #define BPF_JIT_REGION_END (BPF_JIT_REGION_START + BPF_JIT_REGION_SIZE) | ^~~~~~~~~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:54:34: note: in expansion of macro ‘BPF_JIT_REGION_END’ 54 | #define MODULES_VADDR (BPF_JIT_REGION_END) | ^~~~~~~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:53:34: note: in expansion of macro ‘MODULES_VADDR’ 53 | #define MODULES_END (MODULES_VADDR + MODULES_VSIZE) | ^~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:49:34: note: in expansion of macro ‘MODULES_END’ 49 | #define KIMAGE_VADDR (MODULES_END) | ^~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:193:31: note: in expansion of macro ‘KIMAGE_VADDR’ 193 | return kimage_vaddr - KIMAGE_VADDR; | ^~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:85:50: note: each undeclared identifier is reported only once for each function it appears in 85 | #define KASAN_SHADOW_END ((UL(1) << (64 - KASAN_SHADOW_SCALE_SHIFT)) \ | ^~~~~~~~~~~~~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:50:34: note: in expansion of macro ‘KASAN_SHADOW_END’ 50 | #define BPF_JIT_REGION_START (KASAN_SHADOW_END) | ^~~~~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:52:34: note: in expansion of macro ‘BPF_JIT_REGION_START’ 52 | #define BPF_JIT_REGION_END (BPF_JIT_REGION_START + BPF_JIT_REGION_SIZE) | ^~~~~~~~~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:54:34: note: in expansion of macro ‘BPF_JIT_REGION_END’ 54 | #define MODULES_VADDR (BPF_JIT_REGION_END) | ^~~~~~~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:53:34: note: in expansion of macro ‘MODULES_VADDR’ 53 | #define MODULES_END (MODULES_VADDR + MODULES_VSIZE) | ^~~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:49:34: note: in expansion of macro ‘MODULES_END’ 49 | #define KIMAGE_VADDR (MODULES_END) | ^~~~~~~~~~~ ./arch/arm64/include/asm/memory.h:193:31: note: in expansion of macro ‘KIMAGE_VADDR’ 193 | return kimage_vaddr - KIMAGE_VADDR; | ^~~~~~~~~~~~ ./arch/arm64/include/asm/memory.h: In function ‘__tag_set’: ./arch/arm64/include/asm/memory.h:238:22: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] 238 | u64 __addr = (u64)addr & ~__tag_shifted(0xff); | ^ ===================================================== # Builds where the incident occurred: ## defconfig+arm64-chromebook+kcidebug+lab-setup on (arm64): - compiler: gcc-12 - dashboard: https://d.kernelci.org/build/maestro:68dffa7e841b167e8d3e0d0c #kernelci issue maestro:35fc997ccf1864d670c66eb7815463e470fe1fa9 Reported-by: kernelci.org bot <bot(a)kernelci.org> -- This is an experimental report format. Please send feedback in! Talk to us at kernelci(a)lists.linux.dev Made with love by the KernelCI team - https://kernelci.org

1 month, 3 weeks

1
0
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FAILED: patch "[PATCH] media: i2c: tc358743: Fix use-after-free bugs caused by" failed to apply to 6.12-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.12-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y git checkout FETCH_HEAD git cherry-pick -x 79d10f4f21a92e459b2276a77be62c59c1502c9d # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100327-municipal-zone-0d8a@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 79d10f4f21a92e459b2276a77be62c59c1502c9d Mon Sep 17 00:00:00 2001 From: Duoming Zhou <duoming(a)zju.edu.cn> Date: Wed, 17 Sep 2025 17:57:42 +0800 Subject: [PATCH] media: i2c: tc358743: Fix use-after-free bugs caused by orphan timer in probe The state->timer is a cyclic timer that schedules work_i2c_poll and delayed_work_enable_hotplug, while rearming itself. Using timer_delete() fails to guarantee the timer isn't still running when destroyed, similarly cancel_delayed_work() cannot ensure delayed_work_enable_hotplug has terminated if already executing. During probe failure after timer initialization, these may continue running as orphans and reference the already-freed tc358743_state object through tc358743_irq_poll_timer. The following is the trace captured by KASAN. BUG: KASAN: slab-use-after-free in __run_timer_base.part.0+0x7d7/0x8c0 Write of size 8 at addr ffff88800ded83c8 by task swapper/1/0 ... Call Trace: <IRQ> dump_stack_lvl+0x55/0x70 print_report+0xcf/0x610 ? __pfx_sched_balance_find_src_group+0x10/0x10 ? __run_timer_base.part.0+0x7d7/0x8c0 kasan_report+0xb8/0xf0 ? __run_timer_base.part.0+0x7d7/0x8c0 __run_timer_base.part.0+0x7d7/0x8c0 ? rcu_sched_clock_irq+0xb06/0x27d0 ? __pfx___run_timer_base.part.0+0x10/0x10 ? try_to_wake_up+0xb15/0x1960 ? tmigr_update_events+0x280/0x740 ? _raw_spin_lock_irq+0x80/0xe0 ? __pfx__raw_spin_lock_irq+0x10/0x10 tmigr_handle_remote_up+0x603/0x7e0 ? __pfx_tmigr_handle_remote_up+0x10/0x10 ? sched_balance_trigger+0x98/0x9f0 ? sched_tick+0x221/0x5a0 ? _raw_spin_lock_irq+0x80/0xe0 ? __pfx__raw_spin_lock_irq+0x10/0x10 ? tick_nohz_handler+0x339/0x440 ? __pfx_tmigr_handle_remote_up+0x10/0x10 __walk_groups.isra.0+0x42/0x150 tmigr_handle_remote+0x1f4/0x2e0 ? __pfx_tmigr_handle_remote+0x10/0x10 ? ktime_get+0x60/0x140 ? lapic_next_event+0x11/0x20 ? clockevents_program_event+0x1d4/0x2a0 ? hrtimer_interrupt+0x322/0x780 handle_softirqs+0x16a/0x550 irq_exit_rcu+0xaf/0xe0 sysvec_apic_timer_interrupt+0x70/0x80 </IRQ> ... Allocated by task 141: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_kmalloc+0x7f/0x90 __kmalloc_node_track_caller_noprof+0x198/0x430 devm_kmalloc+0x7b/0x1e0 tc358743_probe+0xb7/0x610 i2c_device_probe+0x51d/0x880 really_probe+0x1ca/0x5c0 __driver_probe_device+0x248/0x310 driver_probe_device+0x44/0x120 __device_attach_driver+0x174/0x220 bus_for_each_drv+0x100/0x190 __device_attach+0x206/0x370 bus_probe_device+0x123/0x170 device_add+0xd25/0x1470 i2c_new_client_device+0x7a0/0xcd0 do_one_initcall+0x89/0x300 do_init_module+0x29d/0x7f0 load_module+0x4f48/0x69e0 init_module_from_file+0xe4/0x150 idempotent_init_module+0x320/0x670 __x64_sys_finit_module+0xbd/0x120 do_syscall_64+0xac/0x280 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 141: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3a/0x60 __kasan_slab_free+0x3f/0x50 kfree+0x137/0x370 release_nodes+0xa4/0x100 devres_release_group+0x1b2/0x380 i2c_device_probe+0x694/0x880 really_probe+0x1ca/0x5c0 __driver_probe_device+0x248/0x310 driver_probe_device+0x44/0x120 __device_attach_driver+0x174/0x220 bus_for_each_drv+0x100/0x190 __device_attach+0x206/0x370 bus_probe_device+0x123/0x170 device_add+0xd25/0x1470 i2c_new_client_device+0x7a0/0xcd0 do_one_initcall+0x89/0x300 do_init_module+0x29d/0x7f0 load_module+0x4f48/0x69e0 init_module_from_file+0xe4/0x150 idempotent_init_module+0x320/0x670 __x64_sys_finit_module+0xbd/0x120 do_syscall_64+0xac/0x280 entry_SYSCALL_64_after_hwframe+0x77/0x7f ... Replace timer_delete() with timer_delete_sync() and cancel_delayed_work() with cancel_delayed_work_sync() to ensure proper termination of timer and work items before resource cleanup. This bug was initially identified through static analysis. For reproduction and testing, I created a functional emulation of the tc358743 device via a kernel module and introduced faults through the debugfs interface. Fixes: 869f38ae07f7 ("media: i2c: tc358743: Fix crash in the probe error path when using polling") Fixes: d32d98642de6 ("[media] Driver for Toshiba TC358743 HDMI to CSI-2 bridge") Cc: stable(a)vger.kernel.org Signed-off-by: Duoming Zhou <duoming(a)zju.edu.cn> Signed-off-by: Hans Verkuil <hverkuil+cisco(a)kernel.org> diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c index aa02a5a6ae3e..a0ca19359c43 100644 --- a/drivers/media/i2c/tc358743.c +++ b/drivers/media/i2c/tc358743.c @@ -2326,10 +2326,10 @@ static int tc358743_probe(struct i2c_client *client) err_work_queues: cec_unregister_adapter(state->cec_adap); if (!state->i2c_client->irq) { - timer_delete(&state->timer); + timer_delete_sync(&state->timer); flush_work(&state->work_i2c_poll); } - cancel_delayed_work(&state->delayed_work_enable_hotplug); + cancel_delayed_work_sync(&state->delayed_work_enable_hotplug); mutex_destroy(&state->confctl_mutex); err_hdl: media_entity_cleanup(&sd->entity);

1 month, 3 weeks

2
1
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[PATCH v2] media: mtk-mdp: Fix some issues in mtk_mdp_core.c

by Haoxiang Li

Add check for the return value of vpu_get_plat_device() to prevent null pointer dereference. And vpu_get_plat_device() increases the reference count of the returned platform device. Add platform_device_put() to prevent reference leak. Also add platform_device_put() in mtk_mdp_remove(). Add mtk_mdp_unregister_m2m_device() on the error handling path. Fixes: c8eb2d7e8202 ("[media] media: Add Mediatek MDP Driver") Cc: stable(a)vger.kernel.org Signed-off-by: Haoxiang Li <haoxiang_li2024(a)163.com> --- Changes in v2: - Add check for vpu_get_plat_device() - Add platform_device_put() in mtk_mdp_remove() - Add mtk_mdp_unregister_m2m_device() on the error handling path. - Modify the patch title and description. I think you are right. Thanks, CJ! --- .../media/platform/mediatek/mdp/mtk_mdp_core.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c b/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c index 80fdc6ff57e0..8432833814f3 100644 --- a/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c +++ b/drivers/media/platform/mediatek/mdp/mtk_mdp_core.c @@ -194,11 +194,17 @@ static int mtk_mdp_probe(struct platform_device *pdev) } mdp->vpu_dev = vpu_get_plat_device(pdev); + if (!mdp->vpu_dev) { + dev_err(&pdev->dev, "Failed to get vpu device\n"); + ret = -ENODEV; + goto err_vpu_get_dev; + } + ret = vpu_wdt_reg_handler(mdp->vpu_dev, mtk_mdp_reset_handler, mdp, VPU_RST_MDP); if (ret) { dev_err(&pdev->dev, "Failed to register reset handler\n"); - goto err_m2m_register; + goto err_reg_handler; } platform_set_drvdata(pdev, mdp); @@ -206,7 +212,7 @@ static int mtk_mdp_probe(struct platform_device *pdev) ret = vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32)); if (ret) { dev_err(&pdev->dev, "Failed to set vb2 dma mag seg size\n"); - goto err_m2m_register; + goto err_reg_handler; } pm_runtime_enable(dev); @@ -214,6 +220,12 @@ static int mtk_mdp_probe(struct platform_device *pdev) return 0; +err_reg_handler: + platform_device_put(mdp->vpu_dev); + +err_vpu_get_dev: + mtk_mdp_unregister_m2m_device(mdp); + err_m2m_register: v4l2_device_unregister(&mdp->v4l2_dev); @@ -242,6 +254,7 @@ static void mtk_mdp_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); vb2_dma_contig_clear_max_seg_size(&pdev->dev); + platform_device_put(mdp->vpu_dev); mtk_mdp_unregister_m2m_device(mdp); v4l2_device_unregister(&mdp->v4l2_dev); -- 2.25.1

1 month, 3 weeks

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FAILED: patch "[PATCH] wifi: rtw89: fix use-after-free in" failed to apply to 6.16-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.16-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.16.y git checkout FETCH_HEAD git cherry-pick -x 3e31a6bc07312b448fad3b45de578471f86f0e77 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100340-dwelling-engross-0738@gregkh' --subject-prefix 'PATCH 6.16.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 3e31a6bc07312b448fad3b45de578471f86f0e77 Mon Sep 17 00:00:00 2001 From: Fedor Pchelkin <pchelkin(a)ispras.ru> Date: Sat, 20 Sep 2025 00:08:47 +0300 Subject: [PATCH] wifi: rtw89: fix use-after-free in rtw89_core_tx_kick_off_and_wait() There is a bug observed when rtw89_core_tx_kick_off_and_wait() tries to access already freed skb_data: BUG: KFENCE: use-after-free write in rtw89_core_tx_kick_off_and_wait drivers/net/wireless/realtek/rtw89/core.c:1110 CPU: 6 UID: 0 PID: 41377 Comm: kworker/u64:24 Not tainted 6.17.0-rc1+ #1 PREEMPT(lazy) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS edk2-20250523-14.fc42 05/23/2025 Workqueue: events_unbound cfg80211_wiphy_work [cfg80211] Use-after-free write at 0x0000000020309d9d (in kfence-#251): rtw89_core_tx_kick_off_and_wait drivers/net/wireless/realtek/rtw89/core.c:1110 rtw89_core_scan_complete drivers/net/wireless/realtek/rtw89/core.c:5338 rtw89_hw_scan_complete_cb drivers/net/wireless/realtek/rtw89/fw.c:7979 rtw89_chanctx_proceed_cb drivers/net/wireless/realtek/rtw89/chan.c:3165 rtw89_chanctx_proceed drivers/net/wireless/realtek/rtw89/chan.h:141 rtw89_hw_scan_complete drivers/net/wireless/realtek/rtw89/fw.c:8012 rtw89_mac_c2h_scanofld_rsp drivers/net/wireless/realtek/rtw89/mac.c:5059 rtw89_fw_c2h_work drivers/net/wireless/realtek/rtw89/fw.c:6758 process_one_work kernel/workqueue.c:3241 worker_thread kernel/workqueue.c:3400 kthread kernel/kthread.c:463 ret_from_fork arch/x86/kernel/process.c:154 ret_from_fork_asm arch/x86/entry/entry_64.S:258 kfence-#251: 0x0000000056e2393d-0x000000009943cb62, size=232, cache=skbuff_head_cache allocated by task 41377 on cpu 6 at 77869.159548s (0.009551s ago): __alloc_skb net/core/skbuff.c:659 __netdev_alloc_skb net/core/skbuff.c:734 ieee80211_nullfunc_get net/mac80211/tx.c:5844 rtw89_core_send_nullfunc drivers/net/wireless/realtek/rtw89/core.c:3431 rtw89_core_scan_complete drivers/net/wireless/realtek/rtw89/core.c:5338 rtw89_hw_scan_complete_cb drivers/net/wireless/realtek/rtw89/fw.c:7979 rtw89_chanctx_proceed_cb drivers/net/wireless/realtek/rtw89/chan.c:3165 rtw89_chanctx_proceed drivers/net/wireless/realtek/rtw89/chan.c:3194 rtw89_hw_scan_complete drivers/net/wireless/realtek/rtw89/fw.c:8012 rtw89_mac_c2h_scanofld_rsp drivers/net/wireless/realtek/rtw89/mac.c:5059 rtw89_fw_c2h_work drivers/net/wireless/realtek/rtw89/fw.c:6758 process_one_work kernel/workqueue.c:3241 worker_thread kernel/workqueue.c:3400 kthread kernel/kthread.c:463 ret_from_fork arch/x86/kernel/process.c:154 ret_from_fork_asm arch/x86/entry/entry_64.S:258 freed by task 1045 on cpu 9 at 77869.168393s (0.001557s ago): ieee80211_tx_status_skb net/mac80211/status.c:1117 rtw89_pci_release_txwd_skb drivers/net/wireless/realtek/rtw89/pci.c:564 rtw89_pci_release_tx_skbs.isra.0 drivers/net/wireless/realtek/rtw89/pci.c:651 rtw89_pci_release_tx drivers/net/wireless/realtek/rtw89/pci.c:676 rtw89_pci_napi_poll drivers/net/wireless/realtek/rtw89/pci.c:4238 __napi_poll net/core/dev.c:7495 net_rx_action net/core/dev.c:7557 net/core/dev.c:7684 handle_softirqs kernel/softirq.c:580 do_softirq.part.0 kernel/softirq.c:480 __local_bh_enable_ip kernel/softirq.c:407 rtw89_pci_interrupt_threadfn drivers/net/wireless/realtek/rtw89/pci.c:927 irq_thread_fn kernel/irq/manage.c:1133 irq_thread kernel/irq/manage.c:1257 kthread kernel/kthread.c:463 ret_from_fork arch/x86/kernel/process.c:154 ret_from_fork_asm arch/x86/entry/entry_64.S:258 It is a consequence of a race between the waiting and the signaling side of the completion: Waiting thread Completing thread rtw89_core_tx_kick_off_and_wait() rcu_assign_pointer(skb_data->wait, wait) /* start waiting */ wait_for_completion_timeout() rtw89_pci_tx_status() rtw89_core_tx_wait_complete() rcu_read_lock() /* signals completion and * proceeds further */ complete(&wait->completion) rcu_read_unlock() ... /* frees skb_data */ ieee80211_tx_status_ni() /* returns (exit status doesn't matter) */ wait_for_completion_timeout() ... /* accesses the already freed skb_data */ rcu_assign_pointer(skb_data->wait, NULL) The completing side might proceed and free the underlying skb even before the waiting side is fully awoken and run to execution. Actually the race happens regardless of wait_for_completion_timeout() exit status, e.g. the waiting side may hit a timeout and the concurrent completing side is still able to free the skb. Skbs which are sent by rtw89_core_tx_kick_off_and_wait() are owned by the driver. They don't come from core ieee80211 stack so no need to pass them to ieee80211_tx_status_ni() on completing side. Introduce a work function which will act as a garbage collector for rtw89_tx_wait_info objects and the associated skbs. Thus no potentially heavy locks are required on the completing side. Found by Linux Verification Center (linuxtesting.org). Fixes: 1ae5ca615285 ("wifi: rtw89: add function to wait for completion of TX skbs") Cc: stable(a)vger.kernel.org Suggested-by: Zong-Zhe Yang <kevin_yang(a)realtek.com> Signed-off-by: Fedor Pchelkin <pchelkin(a)ispras.ru> Acked-by: Ping-Ke Shih <pkshih(a)realtek.com> Signed-off-by: Ping-Ke Shih <pkshih(a)realtek.com> Link: https://patch.msgid.link/20250919210852.823912-2-pchelkin@ispras.ru diff --git a/drivers/net/wireless/realtek/rtw89/core.c b/drivers/net/wireless/realtek/rtw89/core.c index fe059c4a6b55..ec467ae0e9e6 100644 --- a/drivers/net/wireless/realtek/rtw89/core.c +++ b/drivers/net/wireless/realtek/rtw89/core.c @@ -1135,6 +1135,14 @@ rtw89_core_tx_update_desc_info(struct rtw89_dev *rtwdev, } } +static void rtw89_tx_wait_work(struct wiphy *wiphy, struct wiphy_work *work) +{ + struct rtw89_dev *rtwdev = container_of(work, struct rtw89_dev, + tx_wait_work.work); + + rtw89_tx_wait_list_clear(rtwdev); +} + void rtw89_core_tx_kick_off(struct rtw89_dev *rtwdev, u8 qsel) { u8 ch_dma; @@ -1152,6 +1160,8 @@ int rtw89_core_tx_kick_off_and_wait(struct rtw89_dev *rtwdev, struct sk_buff *sk unsigned long time_left; int ret = 0; + lockdep_assert_wiphy(rtwdev->hw->wiphy); + wait = kzalloc(sizeof(*wait), GFP_KERNEL); if (!wait) { rtw89_core_tx_kick_off(rtwdev, qsel); @@ -1159,18 +1169,23 @@ int rtw89_core_tx_kick_off_and_wait(struct rtw89_dev *rtwdev, struct sk_buff *sk } init_completion(&wait->completion); + wait->skb = skb; rcu_assign_pointer(skb_data->wait, wait); rtw89_core_tx_kick_off(rtwdev, qsel); time_left = wait_for_completion_timeout(&wait->completion, msecs_to_jiffies(timeout)); - if (time_left == 0) - ret = -ETIMEDOUT; - else if (!wait->tx_done) - ret = -EAGAIN; - rcu_assign_pointer(skb_data->wait, NULL); - kfree_rcu(wait, rcu_head); + if (time_left == 0) { + ret = -ETIMEDOUT; + list_add_tail(&wait->list, &rtwdev->tx_waits); + wiphy_delayed_work_queue(rtwdev->hw->wiphy, &rtwdev->tx_wait_work, + RTW89_TX_WAIT_WORK_TIMEOUT); + } else { + if (!wait->tx_done) + ret = -EAGAIN; + rtw89_tx_wait_release(wait); + } return ret; } @@ -5548,6 +5563,7 @@ void rtw89_core_stop(struct rtw89_dev *rtwdev) wiphy_work_cancel(wiphy, &btc->dhcp_notify_work); wiphy_work_cancel(wiphy, &btc->icmp_notify_work); cancel_delayed_work_sync(&rtwdev->txq_reinvoke_work); + wiphy_delayed_work_cancel(wiphy, &rtwdev->tx_wait_work); wiphy_delayed_work_cancel(wiphy, &rtwdev->track_work); wiphy_delayed_work_cancel(wiphy, &rtwdev->track_ps_work); wiphy_delayed_work_cancel(wiphy, &rtwdev->chanctx_work); @@ -5773,6 +5789,7 @@ int rtw89_core_init(struct rtw89_dev *rtwdev) INIT_LIST_HEAD(&rtwdev->scan_info.pkt_list[band]); } INIT_LIST_HEAD(&rtwdev->scan_info.chan_list); + INIT_LIST_HEAD(&rtwdev->tx_waits); INIT_WORK(&rtwdev->ba_work, rtw89_core_ba_work); INIT_WORK(&rtwdev->txq_work, rtw89_core_txq_work); INIT_DELAYED_WORK(&rtwdev->txq_reinvoke_work, rtw89_core_txq_reinvoke_work); @@ -5784,6 +5801,7 @@ int rtw89_core_init(struct rtw89_dev *rtwdev) wiphy_delayed_work_init(&rtwdev->coex_rfk_chk_work, rtw89_coex_rfk_chk_work); wiphy_delayed_work_init(&rtwdev->cfo_track_work, rtw89_phy_cfo_track_work); wiphy_delayed_work_init(&rtwdev->mcc_prepare_done_work, rtw89_mcc_prepare_done_work); + wiphy_delayed_work_init(&rtwdev->tx_wait_work, rtw89_tx_wait_work); INIT_DELAYED_WORK(&rtwdev->forbid_ba_work, rtw89_forbid_ba_work); wiphy_delayed_work_init(&rtwdev->antdiv_work, rtw89_phy_antdiv_work); rtwdev->txq_wq = alloc_workqueue("rtw89_tx_wq", WQ_UNBOUND | WQ_HIGHPRI, 0); diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h index 3d4ad2ffb75c..d15fa70eb4dc 100644 --- a/drivers/net/wireless/realtek/rtw89/core.h +++ b/drivers/net/wireless/realtek/rtw89/core.h @@ -3507,9 +3507,12 @@ struct rtw89_phy_rate_pattern { bool enable; }; +#define RTW89_TX_WAIT_WORK_TIMEOUT msecs_to_jiffies(500) struct rtw89_tx_wait_info { struct rcu_head rcu_head; + struct list_head list; struct completion completion; + struct sk_buff *skb; bool tx_done; }; @@ -6000,6 +6003,9 @@ struct rtw89_dev { /* used to protect rpwm */ spinlock_t rpwm_lock; + struct list_head tx_waits; + struct wiphy_delayed_work tx_wait_work; + struct rtw89_cam_info cam_info; struct sk_buff_head c2h_queue; @@ -6256,6 +6262,26 @@ rtw89_assoc_link_rcu_dereference(struct rtw89_dev *rtwdev, u8 macid) list_first_entry_or_null(&p->dlink_pool, typeof(*p->links_inst), dlink_schd); \ }) +static inline void rtw89_tx_wait_release(struct rtw89_tx_wait_info *wait) +{ + dev_kfree_skb_any(wait->skb); + kfree_rcu(wait, rcu_head); +} + +static inline void rtw89_tx_wait_list_clear(struct rtw89_dev *rtwdev) +{ + struct rtw89_tx_wait_info *wait, *tmp; + + lockdep_assert_wiphy(rtwdev->hw->wiphy); + + list_for_each_entry_safe(wait, tmp, &rtwdev->tx_waits, list) { + if (!completion_done(&wait->completion)) + continue; + list_del(&wait->list); + rtw89_tx_wait_release(wait); + } +} + static inline int rtw89_hci_tx_write(struct rtw89_dev *rtwdev, struct rtw89_core_tx_request *tx_req) { @@ -6265,6 +6291,7 @@ static inline int rtw89_hci_tx_write(struct rtw89_dev *rtwdev, static inline void rtw89_hci_reset(struct rtw89_dev *rtwdev) { rtwdev->hci.ops->reset(rtwdev); + rtw89_tx_wait_list_clear(rtwdev); } static inline int rtw89_hci_start(struct rtw89_dev *rtwdev) @@ -7345,11 +7372,12 @@ static inline struct sk_buff *rtw89_alloc_skb_for_rx(struct rtw89_dev *rtwdev, return dev_alloc_skb(length); } -static inline void rtw89_core_tx_wait_complete(struct rtw89_dev *rtwdev, +static inline bool rtw89_core_tx_wait_complete(struct rtw89_dev *rtwdev, struct rtw89_tx_skb_data *skb_data, bool tx_done) { struct rtw89_tx_wait_info *wait; + bool ret = false; rcu_read_lock(); @@ -7357,11 +7385,14 @@ static inline void rtw89_core_tx_wait_complete(struct rtw89_dev *rtwdev, if (!wait) goto out; + ret = true; wait->tx_done = tx_done; - complete(&wait->completion); + /* Don't access skb anymore after completion */ + complete_all(&wait->completion); out: rcu_read_unlock(); + return ret; } static inline bool rtw89_is_mlo_1_1(struct rtw89_dev *rtwdev) diff --git a/drivers/net/wireless/realtek/rtw89/pci.c b/drivers/net/wireless/realtek/rtw89/pci.c index c8286eb84276..8dd91d867ea6 100644 --- a/drivers/net/wireless/realtek/rtw89/pci.c +++ b/drivers/net/wireless/realtek/rtw89/pci.c @@ -464,7 +464,8 @@ static void rtw89_pci_tx_status(struct rtw89_dev *rtwdev, struct rtw89_tx_skb_data *skb_data = RTW89_TX_SKB_CB(skb); struct ieee80211_tx_info *info; - rtw89_core_tx_wait_complete(rtwdev, skb_data, tx_status == RTW89_TX_DONE); + if (rtw89_core_tx_wait_complete(rtwdev, skb_data, tx_status == RTW89_TX_DONE)) + return; info = IEEE80211_SKB_CB(skb); ieee80211_tx_info_clear_status(info); diff --git a/drivers/net/wireless/realtek/rtw89/ser.c b/drivers/net/wireless/realtek/rtw89/ser.c index bb39fdbcba0d..fe7beff8c424 100644 --- a/drivers/net/wireless/realtek/rtw89/ser.c +++ b/drivers/net/wireless/realtek/rtw89/ser.c @@ -502,7 +502,9 @@ static void ser_reset_trx_st_hdl(struct rtw89_ser *ser, u8 evt) } drv_stop_rx(ser); + wiphy_lock(wiphy); drv_trx_reset(ser); + wiphy_unlock(wiphy); /* wait m3 */ hal_send_m2_event(ser);

1 month, 3 weeks

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[PATCH 0/5] ASoC: SOF: ipc4: Fixes for delay reporting

by Peter Ujfalusi

Hi, With SRC in the firmware processing pipeline the FE and BE rate can be different, the sample counters on the two side of the DSP counts in different rate domain and they will drift apart. The counters should be moved to the same rate domain to be usable for delay calculation. The ChainDMA offset value was incorrect since the host buffer size and the trigger to start the chain is misunderstood initially. Finally: we can have a situation when the host and link DMA channel in HDA is not using matching channel ids. We need to look up the link channel explicitly to make sure that we read the LLP from the correct link. Regards, Peter --- Kai Vehmanen (3): ASoC: SOF: ipc4-pcm: fix delay calculation when DSP resamples ASoC: SOF: ipc4-pcm: fix start offset calculation for chain DMA ASoC: SOF: ipc4-pcm: do not report invalid delay values Peter Ujfalusi (2): ASoC: SOF: sof-audio: add dev_dbg_ratelimited wrapper ASoC: SOF: Intel: Read the LLP via the associated Link DMA channel sound/soc/sof/intel/hda-stream.c | 29 ++++++++- sound/soc/sof/ipc4-pcm.c | 104 ++++++++++++++++++++++++------- sound/soc/sof/ipc4-topology.c | 1 - sound/soc/sof/ipc4-topology.h | 2 + sound/soc/sof/sof-audio.h | 5 ++ 5 files changed, 114 insertions(+), 27 deletions(-) -- 2.51.0

1 month, 3 weeks

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FAILED: patch "[PATCH] drm/xe/vm: Clear the scratch_pt pointer on error" failed to apply to 6.12-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.12-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y git checkout FETCH_HEAD git cherry-pick -x 358ee50ab565f3c8ea32480e9d03127a81ba32f8 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100328-armchair-going-304b@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 358ee50ab565f3c8ea32480e9d03127a81ba32f8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= <thomas.hellstrom(a)linux.intel.com> Date: Thu, 21 Aug 2025 16:30:45 +0200 Subject: [PATCH] drm/xe/vm: Clear the scratch_pt pointer on error MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Avoid triggering a dereference of an error pointer on cleanup in xe_vm_free_scratch() by clearing any scratch_pt error pointer. Signed-off-by: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> Fixes: 06951c2ee72d ("drm/xe: Use NULL PTEs as scratch PTEs") Cc: Brian Welty <brian.welty(a)intel.com> Cc: Rodrigo Vivi <rodrigo.vivi(a)intel.com> Cc: Lucas De Marchi <lucas.demarchi(a)intel.com> Cc: <stable(a)vger.kernel.org> # v6.8+ Reviewed-by: Matthew Brost <matthew.brost(a)intel.com> Link: https://lore.kernel.org/r/20250821143045.106005-4-thomas.hellstrom@linux.in… diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c index c86337e08a55..d3f6dc6b1779 100644 --- a/drivers/gpu/drm/xe/xe_vm.c +++ b/drivers/gpu/drm/xe/xe_vm.c @@ -1635,8 +1635,12 @@ static int xe_vm_create_scratch(struct xe_device *xe, struct xe_tile *tile, for (i = MAX_HUGEPTE_LEVEL; i < vm->pt_root[id]->level; i++) { vm->scratch_pt[id][i] = xe_pt_create(vm, tile, i); - if (IS_ERR(vm->scratch_pt[id][i])) - return PTR_ERR(vm->scratch_pt[id][i]); + if (IS_ERR(vm->scratch_pt[id][i])) { + int err = PTR_ERR(vm->scratch_pt[id][i]); + + vm->scratch_pt[id][i] = NULL; + return err; + } xe_pt_populate_empty(tile, vm, vm->scratch_pt[id][i]); }

1 month, 3 weeks

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FAILED: patch "[PATCH] drm/xe/vm: Clear the scratch_pt pointer on error" failed to apply to 6.17-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.17-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.17.y git checkout FETCH_HEAD git cherry-pick -x 358ee50ab565f3c8ea32480e9d03127a81ba32f8 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100327-judgingly-revenue-6ef4@gregkh' --subject-prefix 'PATCH 6.17.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 358ee50ab565f3c8ea32480e9d03127a81ba32f8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= <thomas.hellstrom(a)linux.intel.com> Date: Thu, 21 Aug 2025 16:30:45 +0200 Subject: [PATCH] drm/xe/vm: Clear the scratch_pt pointer on error MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Avoid triggering a dereference of an error pointer on cleanup in xe_vm_free_scratch() by clearing any scratch_pt error pointer. Signed-off-by: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> Fixes: 06951c2ee72d ("drm/xe: Use NULL PTEs as scratch PTEs") Cc: Brian Welty <brian.welty(a)intel.com> Cc: Rodrigo Vivi <rodrigo.vivi(a)intel.com> Cc: Lucas De Marchi <lucas.demarchi(a)intel.com> Cc: <stable(a)vger.kernel.org> # v6.8+ Reviewed-by: Matthew Brost <matthew.brost(a)intel.com> Link: https://lore.kernel.org/r/20250821143045.106005-4-thomas.hellstrom@linux.in… diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c index c86337e08a55..d3f6dc6b1779 100644 --- a/drivers/gpu/drm/xe/xe_vm.c +++ b/drivers/gpu/drm/xe/xe_vm.c @@ -1635,8 +1635,12 @@ static int xe_vm_create_scratch(struct xe_device *xe, struct xe_tile *tile, for (i = MAX_HUGEPTE_LEVEL; i < vm->pt_root[id]->level; i++) { vm->scratch_pt[id][i] = xe_pt_create(vm, tile, i); - if (IS_ERR(vm->scratch_pt[id][i])) - return PTR_ERR(vm->scratch_pt[id][i]); + if (IS_ERR(vm->scratch_pt[id][i])) { + int err = PTR_ERR(vm->scratch_pt[id][i]); + + vm->scratch_pt[id][i] = NULL; + return err; + } xe_pt_populate_empty(tile, vm, vm->scratch_pt[id][i]); }

1 month, 3 weeks

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FAILED: patch "[PATCH] drm/xe/vm: Clear the scratch_pt pointer on error" failed to apply to 6.16-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.16-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.16.y git checkout FETCH_HEAD git cherry-pick -x 358ee50ab565f3c8ea32480e9d03127a81ba32f8 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100327-kindly-attic-f695@gregkh' --subject-prefix 'PATCH 6.16.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 358ee50ab565f3c8ea32480e9d03127a81ba32f8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= <thomas.hellstrom(a)linux.intel.com> Date: Thu, 21 Aug 2025 16:30:45 +0200 Subject: [PATCH] drm/xe/vm: Clear the scratch_pt pointer on error MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Avoid triggering a dereference of an error pointer on cleanup in xe_vm_free_scratch() by clearing any scratch_pt error pointer. Signed-off-by: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> Fixes: 06951c2ee72d ("drm/xe: Use NULL PTEs as scratch PTEs") Cc: Brian Welty <brian.welty(a)intel.com> Cc: Rodrigo Vivi <rodrigo.vivi(a)intel.com> Cc: Lucas De Marchi <lucas.demarchi(a)intel.com> Cc: <stable(a)vger.kernel.org> # v6.8+ Reviewed-by: Matthew Brost <matthew.brost(a)intel.com> Link: https://lore.kernel.org/r/20250821143045.106005-4-thomas.hellstrom@linux.in… diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c index c86337e08a55..d3f6dc6b1779 100644 --- a/drivers/gpu/drm/xe/xe_vm.c +++ b/drivers/gpu/drm/xe/xe_vm.c @@ -1635,8 +1635,12 @@ static int xe_vm_create_scratch(struct xe_device *xe, struct xe_tile *tile, for (i = MAX_HUGEPTE_LEVEL; i < vm->pt_root[id]->level; i++) { vm->scratch_pt[id][i] = xe_pt_create(vm, tile, i); - if (IS_ERR(vm->scratch_pt[id][i])) - return PTR_ERR(vm->scratch_pt[id][i]); + if (IS_ERR(vm->scratch_pt[id][i])) { + int err = PTR_ERR(vm->scratch_pt[id][i]); + + vm->scratch_pt[id][i] = NULL; + return err; + } xe_pt_populate_empty(tile, vm, vm->scratch_pt[id][i]); }

1 month, 3 weeks

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FAILED: patch "[PATCH] media: uvcvideo: Mark invalid entities with id" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x 0e2ee70291e64a30fe36960c85294726d34a103e # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100359-vagrancy-fragment-e446@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 0e2ee70291e64a30fe36960c85294726d34a103e Mon Sep 17 00:00:00 2001 From: Thadeu Lima de Souza Cascardo <cascardo(a)igalia.com> Date: Wed, 20 Aug 2025 16:08:16 +0000 Subject: [PATCH] media: uvcvideo: Mark invalid entities with id UVC_INVALID_ENTITY_ID Per UVC 1.1+ specification 3.7.2, units and terminals must have a non-zero unique ID. ``` Each Unit and Terminal within the video function is assigned a unique identification number, the Unit ID (UID) or Terminal ID (TID), contained in the bUnitID or bTerminalID field of the descriptor. The value 0x00 is reserved for undefined ID, ``` If we add a new entity with id 0 or a duplicated ID, it will be marked as UVC_INVALID_ENTITY_ID. In a previous attempt commit 3dd075fe8ebb ("media: uvcvideo: Require entities to have a non-zero unique ID"), we ignored all the invalid units, this broke a lot of non-compatible cameras. Hopefully we are more lucky this time. This also prevents some syzkaller reproducers from triggering warnings due to a chain of entities referring to themselves. In one particular case, an Output Unit is connected to an Input Unit, both with the same ID of 1. But when looking up for the source ID of the Output Unit, that same entity is found instead of the input entity, which leads to such warnings. In another case, a backward chain was considered finished as the source ID was 0. Later on, that entity was found, but its pads were not valid. Here is a sample stack trace for one of those cases. [ 20.650953] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 20.830206] usb 1-1: Using ep0 maxpacket: 8 [ 20.833501] usb 1-1: config 0 descriptor?? [ 21.038518] usb 1-1: string descriptor 0 read error: -71 [ 21.038893] usb 1-1: Found UVC 0.00 device <unnamed> (2833:0201) [ 21.039299] uvcvideo 1-1:0.0: Entity type for entity Output 1 was not initialized! [ 21.041583] uvcvideo 1-1:0.0: Entity type for entity Input 1 was not initialized! [ 21.042218] ------------[ cut here ]------------ [ 21.042536] WARNING: CPU: 0 PID: 9 at drivers/media/mc/mc-entity.c:1147 media_create_pad_link+0x2c4/0x2e0 [ 21.043195] Modules linked in: [ 21.043535] CPU: 0 UID: 0 PID: 9 Comm: kworker/0:1 Not tainted 6.11.0-rc7-00030-g3480e43aeccf #444 [ 21.044101] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.15.0-1 04/01/2014 [ 21.044639] Workqueue: usb_hub_wq hub_event [ 21.045100] RIP: 0010:media_create_pad_link+0x2c4/0x2e0 [ 21.045508] Code: fe e8 20 01 00 00 b8 f4 ff ff ff 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 0f 0b eb e9 0f 0b eb 0a 0f 0b eb 06 <0f> 0b eb 02 0f 0b b8 ea ff ff ff eb d4 66 2e 0f 1f 84 00 00 00 00 [ 21.046801] RSP: 0018:ffffc9000004b318 EFLAGS: 00010246 [ 21.047227] RAX: ffff888004e5d458 RBX: 0000000000000000 RCX: ffffffff818fccf1 [ 21.047719] RDX: 000000000000007b RSI: 0000000000000000 RDI: ffff888004313290 [ 21.048241] RBP: ffff888004313290 R08: 0001ffffffffffff R09: 0000000000000000 [ 21.048701] R10: 0000000000000013 R11: 0001888004313290 R12: 0000000000000003 [ 21.049138] R13: ffff888004313080 R14: ffff888004313080 R15: 0000000000000000 [ 21.049648] FS: 0000000000000000(0000) GS:ffff88803ec00000(0000) knlGS:0000000000000000 [ 21.050271] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.050688] CR2: 0000592cc27635b0 CR3: 000000000431c000 CR4: 0000000000750ef0 [ 21.051136] PKRU: 55555554 [ 21.051331] Call Trace: [ 21.051480] <TASK> [ 21.051611] ? __warn+0xc4/0x210 [ 21.051861] ? media_create_pad_link+0x2c4/0x2e0 [ 21.052252] ? report_bug+0x11b/0x1a0 [ 21.052540] ? trace_hardirqs_on+0x31/0x40 [ 21.052901] ? handle_bug+0x3d/0x70 [ 21.053197] ? exc_invalid_op+0x1a/0x50 [ 21.053511] ? asm_exc_invalid_op+0x1a/0x20 [ 21.053924] ? media_create_pad_link+0x91/0x2e0 [ 21.054364] ? media_create_pad_link+0x2c4/0x2e0 [ 21.054834] ? media_create_pad_link+0x91/0x2e0 [ 21.055131] ? _raw_spin_unlock+0x1e/0x40 [ 21.055441] ? __v4l2_device_register_subdev+0x202/0x210 [ 21.055837] uvc_mc_register_entities+0x358/0x400 [ 21.056144] uvc_register_chains+0x1fd/0x290 [ 21.056413] uvc_probe+0x380e/0x3dc0 [ 21.056676] ? __lock_acquire+0x5aa/0x26e0 [ 21.056946] ? find_held_lock+0x33/0xa0 [ 21.057196] ? kernfs_activate+0x70/0x80 [ 21.057533] ? usb_match_dynamic_id+0x1b/0x70 [ 21.057811] ? find_held_lock+0x33/0xa0 [ 21.058047] ? usb_match_dynamic_id+0x55/0x70 [ 21.058330] ? lock_release+0x124/0x260 [ 21.058657] ? usb_match_one_id_intf+0xa2/0x100 [ 21.058997] usb_probe_interface+0x1ba/0x330 [ 21.059399] really_probe+0x1ba/0x4c0 [ 21.059662] __driver_probe_device+0xb2/0x180 [ 21.059944] driver_probe_device+0x5a/0x100 [ 21.060170] __device_attach_driver+0xe9/0x160 [ 21.060427] ? __pfx___device_attach_driver+0x10/0x10 [ 21.060872] bus_for_each_drv+0xa9/0x100 [ 21.061312] __device_attach+0xed/0x190 [ 21.061812] device_initial_probe+0xe/0x20 [ 21.062229] bus_probe_device+0x4d/0xd0 [ 21.062590] device_add+0x308/0x590 [ 21.062912] usb_set_configuration+0x7b6/0xaf0 [ 21.063403] usb_generic_driver_probe+0x36/0x80 [ 21.063714] usb_probe_device+0x7b/0x130 [ 21.063936] really_probe+0x1ba/0x4c0 [ 21.064111] __driver_probe_device+0xb2/0x180 [ 21.064577] driver_probe_device+0x5a/0x100 [ 21.065019] __device_attach_driver+0xe9/0x160 [ 21.065403] ? __pfx___device_attach_driver+0x10/0x10 [ 21.065820] bus_for_each_drv+0xa9/0x100 [ 21.066094] __device_attach+0xed/0x190 [ 21.066535] device_initial_probe+0xe/0x20 [ 21.066992] bus_probe_device+0x4d/0xd0 [ 21.067250] device_add+0x308/0x590 [ 21.067501] usb_new_device+0x347/0x610 [ 21.067817] hub_event+0x156b/0x1e30 [ 21.068060] ? process_scheduled_works+0x48b/0xaf0 [ 21.068337] process_scheduled_works+0x5a3/0xaf0 [ 21.068668] worker_thread+0x3cf/0x560 [ 21.068932] ? kthread+0x109/0x1b0 [ 21.069133] kthread+0x197/0x1b0 [ 21.069343] ? __pfx_worker_thread+0x10/0x10 [ 21.069598] ? __pfx_kthread+0x10/0x10 [ 21.069908] ret_from_fork+0x32/0x40 [ 21.070169] ? __pfx_kthread+0x10/0x10 [ 21.070424] ret_from_fork_asm+0x1a/0x30 [ 21.070737] </TASK> Reported-by: syzbot+0584f746fde3d52b4675(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=0584f746fde3d52b4675 Reported-by: syzbot+dd320d114deb3f5bb79b(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=dd320d114deb3f5bb79b Reported-by: Youngjun Lee <yjjuny.lee(a)samsung.com> Fixes: a3fbc2e6bb05 ("media: mc-entity.c: use WARN_ON, validate link pads") Cc: stable(a)vger.kernel.org Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo(a)igalia.com> Co-developed-by: Ricardo Ribalda <ribalda(a)chromium.org> Signed-off-by: Ricardo Ribalda <ribalda(a)chromium.org> Reviewed-by: Laurent Pinchart <laurent.pinchart(a)ideasonboard.com> Reviewed-by: Hans de Goede <hansg(a)kernel.org> Signed-off-by: Hans de Goede <hansg(a)kernel.org> Signed-off-by: Laurent Pinchart <laurent.pinchart(a)ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil+cisco(a)kernel.org> diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c index 10df845fb17e..fa61f1d0ea2c 100644 --- a/drivers/media/usb/uvc/uvc_driver.c +++ b/drivers/media/usb/uvc/uvc_driver.c @@ -137,6 +137,9 @@ struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id) { struct uvc_entity *entity; + if (id == UVC_INVALID_ENTITY_ID) + return NULL; + list_for_each_entry(entity, &dev->entities, list) { if (entity->id == id) return entity; @@ -791,14 +794,27 @@ static const u8 uvc_media_transport_input_guid[16] = UVC_GUID_UVC_MEDIA_TRANSPORT_INPUT; static const u8 uvc_processing_guid[16] = UVC_GUID_UVC_PROCESSING; -static struct uvc_entity *uvc_alloc_entity(u16 type, u16 id, - unsigned int num_pads, unsigned int extra_size) +static struct uvc_entity *uvc_alloc_new_entity(struct uvc_device *dev, u16 type, + u16 id, unsigned int num_pads, + unsigned int extra_size) { struct uvc_entity *entity; unsigned int num_inputs; unsigned int size; unsigned int i; + /* Per UVC 1.1+ spec 3.7.2, the ID should be non-zero. */ + if (id == 0) { + dev_err(&dev->intf->dev, "Found Unit with invalid ID 0\n"); + id = UVC_INVALID_ENTITY_ID; + } + + /* Per UVC 1.1+ spec 3.7.2, the ID is unique. */ + if (uvc_entity_by_id(dev, id)) { + dev_err(&dev->intf->dev, "Found multiple Units with ID %u\n", id); + id = UVC_INVALID_ENTITY_ID; + } + extra_size = roundup(extra_size, sizeof(*entity->pads)); if (num_pads) num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1; @@ -808,7 +824,7 @@ static struct uvc_entity *uvc_alloc_entity(u16 type, u16 id, + num_inputs; entity = kzalloc(size, GFP_KERNEL); if (entity == NULL) - return NULL; + return ERR_PTR(-ENOMEM); entity->id = id; entity->type = type; @@ -920,10 +936,10 @@ static int uvc_parse_vendor_control(struct uvc_device *dev, break; } - unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3], - p + 1, 2*n); - if (unit == NULL) - return -ENOMEM; + unit = uvc_alloc_new_entity(dev, UVC_VC_EXTENSION_UNIT, + buffer[3], p + 1, 2 * n); + if (IS_ERR(unit)) + return PTR_ERR(unit); memcpy(unit->guid, &buffer[4], 16); unit->extension.bNumControls = buffer[20]; @@ -1032,10 +1048,10 @@ static int uvc_parse_standard_control(struct uvc_device *dev, return -EINVAL; } - term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3], - 1, n + p); - if (term == NULL) - return -ENOMEM; + term = uvc_alloc_new_entity(dev, type | UVC_TERM_INPUT, + buffer[3], 1, n + p); + if (IS_ERR(term)) + return PTR_ERR(term); if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) { term->camera.bControlSize = n; @@ -1091,10 +1107,10 @@ static int uvc_parse_standard_control(struct uvc_device *dev, return 0; } - term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3], - 1, 0); - if (term == NULL) - return -ENOMEM; + term = uvc_alloc_new_entity(dev, type | UVC_TERM_OUTPUT, + buffer[3], 1, 0); + if (IS_ERR(term)) + return PTR_ERR(term); memcpy(term->baSourceID, &buffer[7], 1); @@ -1113,9 +1129,10 @@ static int uvc_parse_standard_control(struct uvc_device *dev, return -EINVAL; } - unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0); - if (unit == NULL) - return -ENOMEM; + unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3], + p + 1, 0); + if (IS_ERR(unit)) + return PTR_ERR(unit); memcpy(unit->baSourceID, &buffer[5], p); @@ -1135,9 +1152,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev, return -EINVAL; } - unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n); - if (unit == NULL) - return -ENOMEM; + unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3], 2, n); + if (IS_ERR(unit)) + return PTR_ERR(unit); memcpy(unit->baSourceID, &buffer[4], 1); unit->processing.wMaxMultiplier = @@ -1164,9 +1181,10 @@ static int uvc_parse_standard_control(struct uvc_device *dev, return -EINVAL; } - unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n); - if (unit == NULL) - return -ENOMEM; + unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3], + p + 1, n); + if (IS_ERR(unit)) + return PTR_ERR(unit); memcpy(unit->guid, &buffer[4], 16); unit->extension.bNumControls = buffer[20]; @@ -1311,9 +1329,10 @@ static int uvc_gpio_parse(struct uvc_device *dev) return dev_err_probe(&dev->intf->dev, irq, "No IRQ for privacy GPIO\n"); - unit = uvc_alloc_entity(UVC_EXT_GPIO_UNIT, UVC_EXT_GPIO_UNIT_ID, 0, 1); - if (!unit) - return -ENOMEM; + unit = uvc_alloc_new_entity(dev, UVC_EXT_GPIO_UNIT, + UVC_EXT_GPIO_UNIT_ID, 0, 1); + if (IS_ERR(unit)) + return PTR_ERR(unit); unit->gpio.gpio_privacy = gpio_privacy; unit->gpio.irq = irq; diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index 8a9a3e5ae3c0..24292efbe47d 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -41,6 +41,8 @@ #define UVC_EXT_GPIO_UNIT 0x7ffe #define UVC_EXT_GPIO_UNIT_ID 0x100 +#define UVC_INVALID_ENTITY_ID 0xffff + /* ------------------------------------------------------------------------ * Driver specific constants. */

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FAILED: patch "[PATCH] wifi: rtw89: fix use-after-free in" failed to apply to 6.6-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x 3e31a6bc07312b448fad3b45de578471f86f0e77 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025100344-cabbage-secluding-d59c@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 3e31a6bc07312b448fad3b45de578471f86f0e77 Mon Sep 17 00:00:00 2001 From: Fedor Pchelkin <pchelkin(a)ispras.ru> Date: Sat, 20 Sep 2025 00:08:47 +0300 Subject: [PATCH] wifi: rtw89: fix use-after-free in rtw89_core_tx_kick_off_and_wait() There is a bug observed when rtw89_core_tx_kick_off_and_wait() tries to access already freed skb_data: BUG: KFENCE: use-after-free write in rtw89_core_tx_kick_off_and_wait drivers/net/wireless/realtek/rtw89/core.c:1110 CPU: 6 UID: 0 PID: 41377 Comm: kworker/u64:24 Not tainted 6.17.0-rc1+ #1 PREEMPT(lazy) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS edk2-20250523-14.fc42 05/23/2025 Workqueue: events_unbound cfg80211_wiphy_work [cfg80211] Use-after-free write at 0x0000000020309d9d (in kfence-#251): rtw89_core_tx_kick_off_and_wait drivers/net/wireless/realtek/rtw89/core.c:1110 rtw89_core_scan_complete drivers/net/wireless/realtek/rtw89/core.c:5338 rtw89_hw_scan_complete_cb drivers/net/wireless/realtek/rtw89/fw.c:7979 rtw89_chanctx_proceed_cb drivers/net/wireless/realtek/rtw89/chan.c:3165 rtw89_chanctx_proceed drivers/net/wireless/realtek/rtw89/chan.h:141 rtw89_hw_scan_complete drivers/net/wireless/realtek/rtw89/fw.c:8012 rtw89_mac_c2h_scanofld_rsp drivers/net/wireless/realtek/rtw89/mac.c:5059 rtw89_fw_c2h_work drivers/net/wireless/realtek/rtw89/fw.c:6758 process_one_work kernel/workqueue.c:3241 worker_thread kernel/workqueue.c:3400 kthread kernel/kthread.c:463 ret_from_fork arch/x86/kernel/process.c:154 ret_from_fork_asm arch/x86/entry/entry_64.S:258 kfence-#251: 0x0000000056e2393d-0x000000009943cb62, size=232, cache=skbuff_head_cache allocated by task 41377 on cpu 6 at 77869.159548s (0.009551s ago): __alloc_skb net/core/skbuff.c:659 __netdev_alloc_skb net/core/skbuff.c:734 ieee80211_nullfunc_get net/mac80211/tx.c:5844 rtw89_core_send_nullfunc drivers/net/wireless/realtek/rtw89/core.c:3431 rtw89_core_scan_complete drivers/net/wireless/realtek/rtw89/core.c:5338 rtw89_hw_scan_complete_cb drivers/net/wireless/realtek/rtw89/fw.c:7979 rtw89_chanctx_proceed_cb drivers/net/wireless/realtek/rtw89/chan.c:3165 rtw89_chanctx_proceed drivers/net/wireless/realtek/rtw89/chan.c:3194 rtw89_hw_scan_complete drivers/net/wireless/realtek/rtw89/fw.c:8012 rtw89_mac_c2h_scanofld_rsp drivers/net/wireless/realtek/rtw89/mac.c:5059 rtw89_fw_c2h_work drivers/net/wireless/realtek/rtw89/fw.c:6758 process_one_work kernel/workqueue.c:3241 worker_thread kernel/workqueue.c:3400 kthread kernel/kthread.c:463 ret_from_fork arch/x86/kernel/process.c:154 ret_from_fork_asm arch/x86/entry/entry_64.S:258 freed by task 1045 on cpu 9 at 77869.168393s (0.001557s ago): ieee80211_tx_status_skb net/mac80211/status.c:1117 rtw89_pci_release_txwd_skb drivers/net/wireless/realtek/rtw89/pci.c:564 rtw89_pci_release_tx_skbs.isra.0 drivers/net/wireless/realtek/rtw89/pci.c:651 rtw89_pci_release_tx drivers/net/wireless/realtek/rtw89/pci.c:676 rtw89_pci_napi_poll drivers/net/wireless/realtek/rtw89/pci.c:4238 __napi_poll net/core/dev.c:7495 net_rx_action net/core/dev.c:7557 net/core/dev.c:7684 handle_softirqs kernel/softirq.c:580 do_softirq.part.0 kernel/softirq.c:480 __local_bh_enable_ip kernel/softirq.c:407 rtw89_pci_interrupt_threadfn drivers/net/wireless/realtek/rtw89/pci.c:927 irq_thread_fn kernel/irq/manage.c:1133 irq_thread kernel/irq/manage.c:1257 kthread kernel/kthread.c:463 ret_from_fork arch/x86/kernel/process.c:154 ret_from_fork_asm arch/x86/entry/entry_64.S:258 It is a consequence of a race between the waiting and the signaling side of the completion: Waiting thread Completing thread rtw89_core_tx_kick_off_and_wait() rcu_assign_pointer(skb_data->wait, wait) /* start waiting */ wait_for_completion_timeout() rtw89_pci_tx_status() rtw89_core_tx_wait_complete() rcu_read_lock() /* signals completion and * proceeds further */ complete(&wait->completion) rcu_read_unlock() ... /* frees skb_data */ ieee80211_tx_status_ni() /* returns (exit status doesn't matter) */ wait_for_completion_timeout() ... /* accesses the already freed skb_data */ rcu_assign_pointer(skb_data->wait, NULL) The completing side might proceed and free the underlying skb even before the waiting side is fully awoken and run to execution. Actually the race happens regardless of wait_for_completion_timeout() exit status, e.g. the waiting side may hit a timeout and the concurrent completing side is still able to free the skb. Skbs which are sent by rtw89_core_tx_kick_off_and_wait() are owned by the driver. They don't come from core ieee80211 stack so no need to pass them to ieee80211_tx_status_ni() on completing side. Introduce a work function which will act as a garbage collector for rtw89_tx_wait_info objects and the associated skbs. Thus no potentially heavy locks are required on the completing side. Found by Linux Verification Center (linuxtesting.org). Fixes: 1ae5ca615285 ("wifi: rtw89: add function to wait for completion of TX skbs") Cc: stable(a)vger.kernel.org Suggested-by: Zong-Zhe Yang <kevin_yang(a)realtek.com> Signed-off-by: Fedor Pchelkin <pchelkin(a)ispras.ru> Acked-by: Ping-Ke Shih <pkshih(a)realtek.com> Signed-off-by: Ping-Ke Shih <pkshih(a)realtek.com> Link: https://patch.msgid.link/20250919210852.823912-2-pchelkin@ispras.ru diff --git a/drivers/net/wireless/realtek/rtw89/core.c b/drivers/net/wireless/realtek/rtw89/core.c index fe059c4a6b55..ec467ae0e9e6 100644 --- a/drivers/net/wireless/realtek/rtw89/core.c +++ b/drivers/net/wireless/realtek/rtw89/core.c @@ -1135,6 +1135,14 @@ rtw89_core_tx_update_desc_info(struct rtw89_dev *rtwdev, } } +static void rtw89_tx_wait_work(struct wiphy *wiphy, struct wiphy_work *work) +{ + struct rtw89_dev *rtwdev = container_of(work, struct rtw89_dev, + tx_wait_work.work); + + rtw89_tx_wait_list_clear(rtwdev); +} + void rtw89_core_tx_kick_off(struct rtw89_dev *rtwdev, u8 qsel) { u8 ch_dma; @@ -1152,6 +1160,8 @@ int rtw89_core_tx_kick_off_and_wait(struct rtw89_dev *rtwdev, struct sk_buff *sk unsigned long time_left; int ret = 0; + lockdep_assert_wiphy(rtwdev->hw->wiphy); + wait = kzalloc(sizeof(*wait), GFP_KERNEL); if (!wait) { rtw89_core_tx_kick_off(rtwdev, qsel); @@ -1159,18 +1169,23 @@ int rtw89_core_tx_kick_off_and_wait(struct rtw89_dev *rtwdev, struct sk_buff *sk } init_completion(&wait->completion); + wait->skb = skb; rcu_assign_pointer(skb_data->wait, wait); rtw89_core_tx_kick_off(rtwdev, qsel); time_left = wait_for_completion_timeout(&wait->completion, msecs_to_jiffies(timeout)); - if (time_left == 0) - ret = -ETIMEDOUT; - else if (!wait->tx_done) - ret = -EAGAIN; - rcu_assign_pointer(skb_data->wait, NULL); - kfree_rcu(wait, rcu_head); + if (time_left == 0) { + ret = -ETIMEDOUT; + list_add_tail(&wait->list, &rtwdev->tx_waits); + wiphy_delayed_work_queue(rtwdev->hw->wiphy, &rtwdev->tx_wait_work, + RTW89_TX_WAIT_WORK_TIMEOUT); + } else { + if (!wait->tx_done) + ret = -EAGAIN; + rtw89_tx_wait_release(wait); + } return ret; } @@ -5548,6 +5563,7 @@ void rtw89_core_stop(struct rtw89_dev *rtwdev) wiphy_work_cancel(wiphy, &btc->dhcp_notify_work); wiphy_work_cancel(wiphy, &btc->icmp_notify_work); cancel_delayed_work_sync(&rtwdev->txq_reinvoke_work); + wiphy_delayed_work_cancel(wiphy, &rtwdev->tx_wait_work); wiphy_delayed_work_cancel(wiphy, &rtwdev->track_work); wiphy_delayed_work_cancel(wiphy, &rtwdev->track_ps_work); wiphy_delayed_work_cancel(wiphy, &rtwdev->chanctx_work); @@ -5773,6 +5789,7 @@ int rtw89_core_init(struct rtw89_dev *rtwdev) INIT_LIST_HEAD(&rtwdev->scan_info.pkt_list[band]); } INIT_LIST_HEAD(&rtwdev->scan_info.chan_list); + INIT_LIST_HEAD(&rtwdev->tx_waits); INIT_WORK(&rtwdev->ba_work, rtw89_core_ba_work); INIT_WORK(&rtwdev->txq_work, rtw89_core_txq_work); INIT_DELAYED_WORK(&rtwdev->txq_reinvoke_work, rtw89_core_txq_reinvoke_work); @@ -5784,6 +5801,7 @@ int rtw89_core_init(struct rtw89_dev *rtwdev) wiphy_delayed_work_init(&rtwdev->coex_rfk_chk_work, rtw89_coex_rfk_chk_work); wiphy_delayed_work_init(&rtwdev->cfo_track_work, rtw89_phy_cfo_track_work); wiphy_delayed_work_init(&rtwdev->mcc_prepare_done_work, rtw89_mcc_prepare_done_work); + wiphy_delayed_work_init(&rtwdev->tx_wait_work, rtw89_tx_wait_work); INIT_DELAYED_WORK(&rtwdev->forbid_ba_work, rtw89_forbid_ba_work); wiphy_delayed_work_init(&rtwdev->antdiv_work, rtw89_phy_antdiv_work); rtwdev->txq_wq = alloc_workqueue("rtw89_tx_wq", WQ_UNBOUND | WQ_HIGHPRI, 0); diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h index 3d4ad2ffb75c..d15fa70eb4dc 100644 --- a/drivers/net/wireless/realtek/rtw89/core.h +++ b/drivers/net/wireless/realtek/rtw89/core.h @@ -3507,9 +3507,12 @@ struct rtw89_phy_rate_pattern { bool enable; }; +#define RTW89_TX_WAIT_WORK_TIMEOUT msecs_to_jiffies(500) struct rtw89_tx_wait_info { struct rcu_head rcu_head; + struct list_head list; struct completion completion; + struct sk_buff *skb; bool tx_done; }; @@ -6000,6 +6003,9 @@ struct rtw89_dev { /* used to protect rpwm */ spinlock_t rpwm_lock; + struct list_head tx_waits; + struct wiphy_delayed_work tx_wait_work; + struct rtw89_cam_info cam_info; struct sk_buff_head c2h_queue; @@ -6256,6 +6262,26 @@ rtw89_assoc_link_rcu_dereference(struct rtw89_dev *rtwdev, u8 macid) list_first_entry_or_null(&p->dlink_pool, typeof(*p->links_inst), dlink_schd); \ }) +static inline void rtw89_tx_wait_release(struct rtw89_tx_wait_info *wait) +{ + dev_kfree_skb_any(wait->skb); + kfree_rcu(wait, rcu_head); +} + +static inline void rtw89_tx_wait_list_clear(struct rtw89_dev *rtwdev) +{ + struct rtw89_tx_wait_info *wait, *tmp; + + lockdep_assert_wiphy(rtwdev->hw->wiphy); + + list_for_each_entry_safe(wait, tmp, &rtwdev->tx_waits, list) { + if (!completion_done(&wait->completion)) + continue; + list_del(&wait->list); + rtw89_tx_wait_release(wait); + } +} + static inline int rtw89_hci_tx_write(struct rtw89_dev *rtwdev, struct rtw89_core_tx_request *tx_req) { @@ -6265,6 +6291,7 @@ static inline int rtw89_hci_tx_write(struct rtw89_dev *rtwdev, static inline void rtw89_hci_reset(struct rtw89_dev *rtwdev) { rtwdev->hci.ops->reset(rtwdev); + rtw89_tx_wait_list_clear(rtwdev); } static inline int rtw89_hci_start(struct rtw89_dev *rtwdev) @@ -7345,11 +7372,12 @@ static inline struct sk_buff *rtw89_alloc_skb_for_rx(struct rtw89_dev *rtwdev, return dev_alloc_skb(length); } -static inline void rtw89_core_tx_wait_complete(struct rtw89_dev *rtwdev, +static inline bool rtw89_core_tx_wait_complete(struct rtw89_dev *rtwdev, struct rtw89_tx_skb_data *skb_data, bool tx_done) { struct rtw89_tx_wait_info *wait; + bool ret = false; rcu_read_lock(); @@ -7357,11 +7385,14 @@ static inline void rtw89_core_tx_wait_complete(struct rtw89_dev *rtwdev, if (!wait) goto out; + ret = true; wait->tx_done = tx_done; - complete(&wait->completion); + /* Don't access skb anymore after completion */ + complete_all(&wait->completion); out: rcu_read_unlock(); + return ret; } static inline bool rtw89_is_mlo_1_1(struct rtw89_dev *rtwdev) diff --git a/drivers/net/wireless/realtek/rtw89/pci.c b/drivers/net/wireless/realtek/rtw89/pci.c index c8286eb84276..8dd91d867ea6 100644 --- a/drivers/net/wireless/realtek/rtw89/pci.c +++ b/drivers/net/wireless/realtek/rtw89/pci.c @@ -464,7 +464,8 @@ static void rtw89_pci_tx_status(struct rtw89_dev *rtwdev, struct rtw89_tx_skb_data *skb_data = RTW89_TX_SKB_CB(skb); struct ieee80211_tx_info *info; - rtw89_core_tx_wait_complete(rtwdev, skb_data, tx_status == RTW89_TX_DONE); + if (rtw89_core_tx_wait_complete(rtwdev, skb_data, tx_status == RTW89_TX_DONE)) + return; info = IEEE80211_SKB_CB(skb); ieee80211_tx_info_clear_status(info); diff --git a/drivers/net/wireless/realtek/rtw89/ser.c b/drivers/net/wireless/realtek/rtw89/ser.c index bb39fdbcba0d..fe7beff8c424 100644 --- a/drivers/net/wireless/realtek/rtw89/ser.c +++ b/drivers/net/wireless/realtek/rtw89/ser.c @@ -502,7 +502,9 @@ static void ser_reset_trx_st_hdl(struct rtw89_ser *ser, u8 evt) } drv_stop_rx(ser); + wiphy_lock(wiphy); drv_trx_reset(ser); + wiphy_unlock(wiphy); /* wait m3 */ hal_send_m2_event(ser);

1 month, 3 weeks

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[PATCH 6.16.y] gcc-plugins: Remove TODO_verify_il for GCC >= 16

by Brahmajit Das

From: Kees Cook <kees(a)kernel.org> [ Upstream commit a40282dd3c48 ] GCC now runs TODO_verify_il automatically[1], so it is no longer exposed to plugins. Only use the flag on GCC < 16. Link: https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=9739ae9384dd7cd3bb1c7683d6b80… [1] Suggested-by: Christopher Fore <csfore(a)posteo.net> Link: https://lore.kernel.org/r/20250920234519.work.915-kees@kernel.org Signed-off-by: Kees Cook <kees(a)kernel.org> Signed-off-by: Brahmajit Das <listout(a)listout.xyz> --- scripts/gcc-plugins/gcc-common.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/scripts/gcc-plugins/gcc-common.h b/scripts/gcc-plugins/gcc-common.h index 6cb6d1051815..8f1b3500f8e2 100644 --- a/scripts/gcc-plugins/gcc-common.h +++ b/scripts/gcc-plugins/gcc-common.h @@ -173,10 +173,17 @@ static inline opt_pass *get_pass_for_id(int id) return g->get_passes()->get_pass_for_id(id); } +#if BUILDING_GCC_VERSION < 16000 #define TODO_verify_ssa TODO_verify_il #define TODO_verify_flow TODO_verify_il #define TODO_verify_stmts TODO_verify_il #define TODO_verify_rtl_sharing TODO_verify_il +#else +#define TODO_verify_ssa 0 +#define TODO_verify_flow 0 +#define TODO_verify_stmts 0 +#define TODO_verify_rtl_sharing 0 +#endif #define INSN_DELETED_P(insn) (insn)->deleted() -- 2.51.0

1 month, 3 weeks

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Re: Patch "LoongArch: Handle jump tables options for RUST" has been added to the 6.16-stable tree

by Miguel Ojeda

On Sun, Sep 21, 2025 at 3:05 PM <gregkh(a)linuxfoundation.org> wrote: > > This is a note to let you know that I've just added the patch titled > > LoongArch: Handle jump tables options for RUST > > to the 6.16-stable tree which can be found at: > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… ... > commit 74f8295c6fb8436bec9995baf6ba463151b6fb68 upstream. Huacai et al.: I wonder if we could get this one into 6.12.y? Maybe no one actually cares in practice, so please feel free to ignore it, but it is the only `objtool` warning (a lot of instances, but just that kind from a quick look) I have in my LoongArch Rust builds I have in 6.12.y, and it would be nice to have it clean. Thanks! Cheers, Miguel

1 month, 3 weeks

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[PATCH v4 00/11 6.1.y] Backport minmax.h updates from v6.17-rc7

by Eliav Farber

This series backports 11 patches to update minmax.h in the 6.1.y branch, aligning it with v6.17-rc7. The ultimate goal is to synchronize all longterm branches so that they include the full set of minmax.h changes (6.12.y and 6.6.y were already backported by me and are now aligned). The key motivation is to bring in commit d03eba99f5bf ("minmax: allow min()/max()/clamp() if the arguments have the same signedness"), which is missing in older kernels. In mainline, this change enables min()/max()/clamp() to accept mixed argument types, provided both have the same signedness. Without it, backported patches that use these forms may trigger compiler warnings, which escalate to build failures when -Werror is enabled. Changes in v4: - Just swap the order of the first 2 patches in this chain, because commit cb04e8b1d2f2 ("minmax: don't use max() in situations that want a C constant expression") should come before commit dc1c8034e31b ("minmax: simplify min()/max()/clamp() implementation"). Changes in v3: - v2 included 13 patches: https://lore.kernel.org/stable/20250929183358.18982-1-farbere@amazon.com/ - First 2 were accepted and are part of 6.1.155. - 3rd caused build in drivers/md/ to fail: In file included from ./include/linux/container_of.h:5, from ./include/linux/list.h:5, from ./include/linux/wait.h:7, from ./include/linux/mempool.h:8, from ./include/linux/bio.h:8, from drivers/md/dm-bio-record.h:10, from drivers/md/dm-integrity.c:9: drivers/md/dm-integrity.c: In function ‘integrity_metadata’: drivers/md/dm-integrity.c:131:105: error: ISO C90 forbids variable length array ‘checksums_onstack’ [-Werror=vla] 131 | #define MAX_TAG_SIZE (JOURNAL_SECTOR_DATA - JOURNAL_MAC_PER_SECTOR - offsetof(struct journal_entry, last_bytes[MAX_SECTORS_PER_BLOCK])) | ^~~~~~~~~~~~~ ./include/linux/build_bug.h:78:56: note: in definition of macro ‘__static_assert’ 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~ ./include/linux/minmax.h:56:9: note: in expansion of macro ‘static_assert’ 56 | static_assert(__types_ok(x, y, ux, uy), \ | ^~~~~~~~~~~~~ ./include/linux/minmax.h:41:31: note: in expansion of macro ‘__is_noneg_int’ 41 | __is_noneg_int(x) || __is_noneg_int(y)) | ^~~~~~~~~~~~~~ ./include/linux/minmax.h:56:23: note: in expansion of macro ‘__types_ok’ 56 | static_assert(__types_ok(x, y, ux, uy), \ | ^~~~~~~~~~ ./include/linux/minmax.h:61:9: note: in expansion of macro ‘__careful_cmp_once’ 61 | __careful_cmp_once(op, x, y, __UNIQUE_ID(x_), __UNIQUE_ID(y_)) | ^~~~~~~~~~~~~~~~~~ ./include/linux/minmax.h:92:25: note: in expansion of macro ‘__careful_cmp’ 92 | #define max(x, y) __careful_cmp(max, x, y) | ^~~~~~~~~~~~~ drivers/md/dm-integrity.c:1797:40: note: in expansion of macro ‘max’ 1797 | char checksums_onstack[max((size_t)HASH_MAX_DIGESTSIZE, MAX_TAG_SIZE)]; | ^~~ drivers/md/dm-integrity.c:131:89: note: in expansion of macro ‘offsetof’ 131 | #define MAX_TAG_SIZE (JOURNAL_SECTOR_DATA - JOURNAL_MAC_PER_SECTOR - offsetof(struct journal_entry, last_bytes[MAX_SECTORS_PER_BLOCK])) | ^~~~~~~~ drivers/md/dm-integrity.c:1797:73: note: in expansion of macro ‘MAX_TAG_SIZE’ 1797 | char checksums_onstack[max((size_t)HASH_MAX_DIGESTSIZE, MAX_TAG_SIZE)]; | ^~~~~~~~~~~~ - The build was fixed in the second patch of this series. Changes in v2: - v1 included 19 patches: https://lore.kernel.org/stable/20250924202320.32333-1-farbere@amazon.com/ - First 6 were pushed to the stable-tree. - 7th cauded amd driver's build to fail. - This change fixes it. - Modified files: drivers/gpu/drm/amd/amdgpu/amdgpu.h drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c David Laight (7): minmax.h: add whitespace around operators and after commas minmax.h: update some comments minmax.h: reduce the #define expansion of min(), max() and clamp() minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp() minmax.h: move all the clamp() definitions after the min/max() ones minmax.h: simplify the variants of clamp() minmax.h: remove some #defines that are only expanded once Linus Torvalds (4): minmax: don't use max() in situations that want a C constant expression minmax: simplify min()/max()/clamp() implementation minmax: improve macro expansion and type checking minmax: fix up min3() and max3() too drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c | 2 +- drivers/input/touchscreen/cyttsp4_core.c | 2 +- drivers/irqchip/irq-sun6i-r.c | 2 +- drivers/md/dm-integrity.c | 2 +- fs/btrfs/tree-checker.c | 2 +- include/linux/compiler.h | 9 + include/linux/minmax.h | 222 +++++++++++++---------- lib/vsprintf.c | 2 +- 8 files changed, 143 insertions(+), 100 deletions(-) -- 2.47.3

1 month, 3 weeks

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[PATCH net v7 0/4] net: netpoll: fix memory leak and add comprehensive selftests

by Breno Leitao

Fix a memory leak in netpoll and introduce netconsole selftests that expose the issue when running with kmemleak detection enabled. This patchset includes a selftest for netpoll with multiple concurrent users (netconsole + bonding), which simulates the scenario from test[1] that originally demonstrated the issue allegedly fixed by commit efa95b01da18 ("netpoll: fix use after free") - a commit that is now being reverted. Sending this to "net" branch because this is a fix, and the selftest might help with the backports validation. Link: https://lore.kernel.org/lkml/96b940137a50e5c387687bb4f57de8b0435a653f.14048… [1] Signed-off-by: Breno Leitao <leitao(a)debian.org> --- Changes in v7: - Rebased on top of `net` - Link to v6: https://lore.kernel.org/r/20251002-netconsole_torture-v6-0-543bf52f6b46@deb… Changes in v6: - Expand the tests even more and some small fixups - Moved the test to bonding selftests - Link to v5: https://lore.kernel.org/r/20250918-netconsole_torture-v5-0-77e25e0a4eb6@deb… Changes in v5: - Set CONFIG_BONDING=m in selftests/drivers/net/config. - Link to v4: https://lore.kernel.org/r/20250917-netconsole_torture-v4-0-0a5b3b8f81ce@deb… Changes in v4: - Added an additional selftest to test multiple netpoll users in parallel - Link to v3: https://lore.kernel.org/r/20250905-netconsole_torture-v3-0-875c7febd316@deb… Changes in v3: - This patchset is a merge of the fix and the selftest together as recommended by Jakub. Changes in v2: - Reuse the netconsole creation from lib_netcons.sh. Thus, refactoring the create_dynamic_target() (Jakub) - Move the "wait" to after all the messages has been sent. - Link to v1: https://lore.kernel.org/r/20250902-netconsole_torture-v1-1-03c6066598e9@deb… --- Breno Leitao (4): net: netpoll: fix incorrect refcount handling causing incorrect cleanup selftest: netcons: refactor target creation selftest: netcons: create a torture test selftest: netcons: add test for netconsole over bonded interfaces net/core/netpoll.c | 7 +- tools/testing/selftests/drivers/net/Makefile | 1 + .../testing/selftests/drivers/net/bonding/Makefile | 2 + tools/testing/selftests/drivers/net/bonding/config | 4 + .../drivers/net/bonding/netcons_over_bonding.sh | 221 +++++++++++++++++++++ .../selftests/drivers/net/lib/sh/lib_netcons.sh | 188 ++++++++++++++++-- .../selftests/drivers/net/netcons_torture.sh | 127 ++++++++++++ 7 files changed, 530 insertions(+), 20 deletions(-) --- base-commit: 7ae421cf78bd795513ec3a7d7ef7ac9437693e23 change-id: 20250902-netconsole_torture-8fc23f0aca99 Best regards, -- Breno Leitao <leitao(a)debian.org>

1 month, 4 weeks

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ATTENTION :Password key expired !!!

by lists.linaro.org

Hello, I want a quote and I would like to know your availability so that i can send you the necessary documents as well as drawings and specification. Best regards Tony

1 month, 4 weeks

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[PATCH net v6 0/4] net: netpoll: fix memory leak and add comprehensive selftests

by Breno Leitao

Fix a memory leak in netpoll and introduce netconsole selftests that expose the issue when running with kmemleak detection enabled. This patchset includes a selftest for netpoll with multiple concurrent users (netconsole + bonding), which simulates the scenario from test[1] that originally demonstrated the issue allegedly fixed by commit efa95b01da18 ("netpoll: fix use after free") - a commit that is now being reverted. Sending this to "net" branch because this is a fix, and the selftest might help with the backports validation. Link: https://lore.kernel.org/lkml/96b940137a50e5c387687bb4f57de8b0435a653f.14048… [1] Signed-off-by: Breno Leitao <leitao(a)debian.org> --- Changes in v6: - Expand the tests even more and some small fixups - Moved the test to bonding selftests - Link to v5: https://lore.kernel.org/r/20250918-netconsole_torture-v5-0-77e25e0a4eb6@deb… Changes in v5: - Set CONFIG_BONDING=m in selftests/drivers/net/config. - Link to v4: https://lore.kernel.org/r/20250917-netconsole_torture-v4-0-0a5b3b8f81ce@deb… Changes in v4: - Added an additional selftest to test multiple netpoll users in parallel - Link to v3: https://lore.kernel.org/r/20250905-netconsole_torture-v3-0-875c7febd316@deb… Changes in v3: - This patchset is a merge of the fix and the selftest together as recommended by Jakub. Changes in v2: - Reuse the netconsole creation from lib_netcons.sh. Thus, refactoring the create_dynamic_target() (Jakub) - Move the "wait" to after all the messages has been sent. - Link to v1: https://lore.kernel.org/r/20250902-netconsole_torture-v1-1-03c6066598e9@deb… --- Breno Leitao (4): net: netpoll: fix incorrect refcount handling causing incorrect cleanup selftest: netcons: refactor target creation selftest: netcons: create a torture test selftest: netcons: add test for netconsole over bonded interfaces net/core/netpoll.c | 7 +++++-- tools/testing/selftests/drivers/net/Makefile | 1 + tools/testing/selftests/drivers/net/bonding/Makefile | 2 ++ tools/testing/selftests/drivers/net/bonding/config | 4 ++++ tools/testing/selftests/drivers/net/bonding/netcons_over_bonding.sh | 221 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ tools/testing/selftests/drivers/net/lib/sh/lib_netcons.sh | 189 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------------ tools/testing/selftests/drivers/net/netcons_torture.sh | 127 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 531 insertions(+), 20 deletions(-) --- base-commit: f1455695d2d99894b65db233877acac9a0e120b9 change-id: 20250902-netconsole_torture-8fc23f0aca99 Best regards, -- Breno Leitao <leitao(a)debian.org>

1 month, 4 weeks

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Undelivered Mail Returned to Sender

by MAILER-DAEMON＠zihnyunrui.com

This is the mail system at host zihnyunrui.com. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below. For further assistance, please send mail to postmaster. If you do so, please include this problem report. You can delete your own text from the attached returned message. The mail system <linux-stable-mirror(a)lists.linaro.org>: host lists.linaro.org[3.208.193.21] said: 554 5.7.1 Spam message rejected (in reply to end of DATA command)

1 month, 4 weeks

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[PATCH 6.1 00/73] 6.1.155-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 6.1.155 release. There are 73 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Thu, 02 Oct 2025 14:37:59 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.1.155-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.1.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 6.1.155-rc1 Linus Torvalds <torvalds(a)linux-foundation.org> minmax: simplify and clarify min_t()/max_t() implementation Linus Torvalds <torvalds(a)linux-foundation.org> minmax: add a few more MIN_T/MAX_T users Linus Torvalds <torvalds(a)linux-foundation.org> minmax: make generic MIN() and MAX() macros available everywhere Eric Biggers <ebiggers(a)kernel.org> kmsan: fix out-of-bounds access to shadow memory Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add validation for ring_len param Justin Bronder <jsbronder(a)cold-front.org> i40e: increase max descriptors for XL710 Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix idx validation in config queues msg Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix validation of VF state in get resources Nirmoy Das <nirmoyd(a)nvidia.com> drm/ast: Use msleep instead of mdelay for edid read Linus Torvalds <torvalds(a)linux-foundation.org> minmax: avoid overly complicated constant expressions in VM code David Laight <David.Laight(a)ACULAB.COM> minmax: fix indentation of __cmp_once() and __clamp_once() Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> minmax: deduplicate __unconst_integer_typeof() Herve Codina <herve.codina(a)bootlin.com> minmax: Introduce {min,max}_array() Matthew Wilcox (Oracle) <willy(a)infradead.org> minmax: add in_range() macro David Hildenbrand <david(a)redhat.com> mm/migrate_device: don't add folio to be freed to LRU in migrate_device_finalize() Kefeng Wang <wangkefeng.wang(a)huawei.com> mm: migrate_device: use more folio in migrate_device_finalize() Nathan Chancellor <nathan(a)kernel.org> s390/cpum_cf: Fix uninitialized warning after backport of ce971233242b Thomas Zimmermann <tzimmermann(a)suse.de> fbcon: Fix OOB access in font allocation Samasth Norway Ananda <samasth.norway.ananda(a)oracle.com> fbcon: fix integer overflow in fbcon_do_set_font Jinjiang Tu <tujinjiang(a)huawei.com> mm/hugetlb: fix folio is still mapped when deleted Zhen Ni <zhen.ni(a)easystack.cn> afs: Fix potential null pointer dereference in afs_put_server Masami Hiramatsu (Google) <mhiramat(a)kernel.org> tracing: dynevent: Add a missing lockdown check on dynevent Eric Biggers <ebiggers(a)kernel.org> crypto: af_alg - Fix incorrect boolean values in af_alg_ctx Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: improve VF MAC filters accounting Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add mask to apply valid bits for itr_idx Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add max boundary check for VF filters Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix input validation logic for action_meta Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix idx validation in i40e_validate_queue_map Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> futex: Prevent use-after-free during requeue-PI Zabelin Nikita <n.zabelin(a)mt-integration.ru> drm/gma500: Fix null dereference in hdmi teardown Dan Carpenter <dan.carpenter(a)linaro.org> octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: lantiq_gswip: suppress -EINVAL errors for bridge FDB entries added to the CPU port Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup() Martin Schiller <ms(a)dev.tdt.de> net: dsa: lantiq_gswip: do also enable or disable cpu port Ido Schimmel <idosch(a)nvidia.com> selftests: fib_nexthops: Fix creation of non-FDB nexthops Ido Schimmel <idosch(a)nvidia.com> nexthop: Forbid FDB status change while nexthop is in a group Alok Tiwari <alok.a.tiwari(a)oracle.com> bnxt_en: correct offset handling for IPv6 destination address Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: hci_sync: Fix hci_resume_advertising_sync Petr Malat <oss(a)malat.biz> ethernet: rvu-af: Remove slash from the driver name Stéphane Grosjean <stephane.grosjean(a)hms-networks.com> can: peak_usb: fix shift-out-of-bounds issue Vincent Mailhol <mailhol(a)kernel.org> can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: hi311x: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol.vincent(a)wanadoo.fr> can: etas_es58x: sort the includes by alphabetic order Leon Hwang <leon.hwang(a)linux.dev> bpf: Reject bpf_timer for PREEMPT_RT Geert Uytterhoeven <geert+renesas(a)glider.be> can: rcar_can: rcar_can_resume(): fix s2ram with PSCI Stefan Metzmacher <metze(a)samba.org> smb: server: don't use delayed_work for post_recv_credits_work Christian Loehle <christian.loehle(a)arm.com> cpufreq: Initialize cpufreq-based invariance before subsys Peng Fan <peng.fan(a)nxp.com> arm64: dts: imx8mp: Correct thermal sensor index Hugh Dickins <hughd(a)google.com> mm: folio_may_be_lru_cached() unless folio_test_large() Hugh Dickins <hughd(a)google.com> mm/gup: local lru_add_drain() to avoid lru_add_drain_all() Hugh Dickins <hughd(a)google.com> mm/gup: check ref_count instead of lru before migration Shivank Garg <shivankg(a)amd.com> mm: add folio_expected_ref_count() for reference count calculation David Hildenbrand <david(a)redhat.com> mm/gup: revert "mm: gup: fix infinite loop within __get_longterm_locked" Or Har-Toov <ohartoov(a)nvidia.com> IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions qaqland <anguoli(a)uniontech.com> ALSA: usb-audio: Add mute TLV for playback volumes on more devices Cryolitia PukNgae <cryolitia(a)uniontech.com> ALSA: usb-audio: move mixer_quirks' min_mute into common quirk noble.yang <noble.yang(a)comtrue-inc.com> ALSA: usb-audio: Add DSD support for Comtrue USB Audio device Jiayi Li <lijiayi(a)kylinos.cn> usb: core: Add 0x prefix to quirks debug output Takashi Iwai <tiwai(a)suse.de> ALSA: usb-audio: Fix build with CONFIG_INPUT=n Chen Ni <nichen(a)iscas.ac.cn> ALSA: usb-audio: Convert comma to semicolon Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: specify that Apple Touch Bar is direct Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: take cls->maxcontacts into account for Apple Touch Bar even without a HID_DG_CONTACTMAX field Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: support getting the tip state from HID_DG_TOUCH fields in Apple Touch Bar Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: Get the contact ID from HID_DG_TRANSDUCER_INDEX fields in case of Apple Touch Bar Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5 Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Simplify NULL comparison in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Avoid multiple assignments in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Drop unnecessary parentheses in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Fix block comments in mixer_quirks ------------- Diffstat: Makefile | 4 +- arch/arm/mm/pageattr.c | 6 +- arch/arm64/boot/dts/freescale/imx8mp.dtsi | 4 +- arch/s390/kernel/perf_cpum_cf.c | 4 +- arch/um/drivers/mconsole_user.c | 2 + arch/x86/mm/pgtable.c | 2 +- drivers/cpufreq/cpufreq.c | 20 +- drivers/edac/sb_edac.c | 4 +- drivers/edac/skx_common.h | 1 - drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 + .../gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c | 2 + drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppevvmath.h | 14 +- .../drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 2 + .../gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c | 3 + .../gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c | 3 + drivers/gpu/drm/arm/display/include/malidp_utils.h | 2 +- .../drm/arm/display/komeda/komeda_pipeline_state.c | 24 +- drivers/gpu/drm/ast/ast_dp.c | 2 +- drivers/gpu/drm/drm_color_mgmt.c | 2 +- drivers/gpu/drm/gma500/oaktrail_hdmi.c | 2 +- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 6 - drivers/gpu/drm/radeon/evergreen_cs.c | 2 + drivers/hid/hid-multitouch.c | 45 +++- drivers/hwmon/adt7475.c | 24 +- drivers/infiniband/hw/mlx5/devx.c | 1 + drivers/md/dm-integrity.c | 2 +- drivers/media/dvb-frontends/stv0367_priv.h | 3 + drivers/net/can/rcar/rcar_can.c | 8 +- drivers/net/can/spi/hi311x.c | 1 + drivers/net/can/sun4i_can.c | 1 + drivers/net/can/usb/etas_es58x/es581_4.c | 4 +- drivers/net/can/usb/etas_es58x/es58x_core.c | 7 +- drivers/net/can/usb/etas_es58x/es58x_core.h | 8 +- drivers/net/can/usb/etas_es58x/es58x_fd.c | 4 +- drivers/net/can/usb/mcba_usb.c | 1 + drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 +- drivers/net/dsa/lantiq_gswip.c | 41 +-- drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 2 +- drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c | 18 +- drivers/net/ethernet/intel/i40e/i40e.h | 4 +- drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 25 +- drivers/net/ethernet/intel/i40e/i40e_main.c | 26 +- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 110 ++++---- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h | 3 +- drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 3 +- .../net/ethernet/marvell/octeontx2/nic/otx2_tc.c | 2 +- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +- drivers/net/fjes/fjes_main.c | 4 +- drivers/nfc/pn544/i2c.c | 2 - drivers/platform/x86/sony-laptop.c | 1 - drivers/scsi/isci/init.c | 6 +- .../pci/hive_isp_css_include/math_support.h | 5 - drivers/usb/core/quirks.c | 2 +- drivers/video/fbdev/core/fbcon.c | 13 +- drivers/virt/acrn/ioreq.c | 4 +- fs/afs/server.c | 3 +- fs/btrfs/misc.h | 2 - fs/ext2/balloc.c | 2 - fs/ext4/ext4.h | 2 - fs/hugetlbfs/inode.c | 10 +- fs/smb/server/transport_rdma.c | 18 +- fs/ufs/util.h | 6 - include/crypto/if_alg.h | 2 +- include/linux/minmax.h | 122 +++++++-- include/linux/mm.h | 54 ++++ include/linux/pageblock-flags.h | 2 +- include/linux/swap.h | 10 + include/net/bluetooth/hci_core.h | 21 ++ kernel/bpf/verifier.c | 4 + kernel/futex/requeue.c | 6 +- kernel/trace/preemptirq_delay_test.c | 2 - kernel/trace/trace_dynevent.c | 4 + lib/btree.c | 1 - lib/decompress_unlzma.c | 2 + lib/logic_pio.c | 3 - mm/gup.c | 28 +- mm/kmsan/core.c | 10 +- mm/kmsan/kmsan_test.c | 16 ++ mm/migrate_device.c | 42 ++- mm/mlock.c | 2 +- mm/swap.c | 4 +- mm/zsmalloc.c | 1 - net/bluetooth/hci_event.c | 26 +- net/bluetooth/hci_sync.c | 7 + net/ipv4/nexthop.c | 7 + net/ipv4/proc.c | 2 +- net/ipv6/proc.c | 2 +- net/netfilter/nf_nat_core.c | 6 +- net/tipc/core.h | 2 +- net/tipc/link.c | 10 +- sound/usb/mixer_quirks.c | 295 +++++++++++++++++++-- sound/usb/quirks.c | 24 +- sound/usb/usbaudio.h | 4 + .../selftests/bpf/progs/get_branch_snapshot.c | 4 +- tools/testing/selftests/net/fib_nexthops.sh | 12 +- tools/testing/selftests/seccomp/seccomp_bpf.c | 2 + tools/testing/selftests/vm/mremap_test.c | 2 + 97 files changed, 950 insertions(+), 331 deletions(-)

1 month, 4 weeks

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[PATCH 6.12 00/89] 6.12.50-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 6.12.50 release. There are 89 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Thu, 02 Oct 2025 14:37:59 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.12.50-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.12.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 6.12.50-rc1 Niklas Neronin <niklas.neronin(a)linux.intel.com> Revert "usb: xhci: remove option to change a default ring's TRB cycle bit" Jason Gunthorpe <jgg(a)ziepe.ca> iommufd: Fix race during abort for file descriptors Thomas Zimmermann <tzimmermann(a)suse.de> fbcon: Fix OOB access in font allocation Samasth Norway Ananda <samasth.norway.ananda(a)oracle.com> fbcon: fix integer overflow in fbcon_do_set_font Jinjiang Tu <tujinjiang(a)huawei.com> mm/hugetlb: fix folio is still mapped when deleted Eric Biggers <ebiggers(a)kernel.org> kmsan: fix out-of-bounds access to shadow memory Hans de Goede <hansg(a)kernel.org> gpiolib: Extend software-node support to support secondary software-nodes Jakub Acs <acsjakub(a)amazon.de> fs/proc/task_mmu: check p->vec_buf for NULL Zhen Ni <zhen.ni(a)easystack.cn> afs: Fix potential null pointer dereference in afs_put_server Nirmoy Das <nirmoyd(a)nvidia.com> drm/ast: Use msleep instead of mdelay for edid read Josua Mayer <josua(a)solid-run.com> arm64: dts: marvell: cn9132-clearfog: fix multi-lane pci x2 and x4 ports Josua Mayer <josua(a)solid-run.com> arm64: dts: marvell: cn9132-clearfog: disable eMMC high-speed modes Nobuhiro Iwamatsu <iwamatsu(a)nigauri.org> ARM: dts: socfpga: sodia: Fix mdio bus probe and PHY address Masami Hiramatsu (Google) <mhiramat(a)kernel.org> tracing: dynevent: Add a missing lockdown check on dynevent Eric Biggers <ebiggers(a)kernel.org> crypto: af_alg - Fix incorrect boolean values in af_alg_ctx Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: improve VF MAC filters accounting Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add mask to apply valid bits for itr_idx Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add max boundary check for VF filters Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix validation of VF state in get resources Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix input validation logic for action_meta Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix idx validation in config queues msg Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix idx validation in i40e_validate_queue_map Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add validation for ring_len param Amit Chaudhari <amitchaudhari(a)mac.com> HID: asus: add support for missing PX series fn keys Sang-Heon Jeon <ekffu200098(a)gmail.com> smb: client: fix wrong index reference in smb2_compound_op() Daniel Lee <dany97(a)live.ca> platform/x86: lg-laptop: Fix WMAB call in fan_mode_store() Adrián Larumbe <adrian.larumbe(a)collabora.com> drm/panthor: Defer scheduler entitiy destruction to queue release Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> futex: Prevent use-after-free during requeue-PI Zabelin Nikita <n.zabelin(a)mt-integration.ru> drm/gma500: Fix null dereference in hdmi teardown Hugh Dickins <hughd(a)google.com> mm: folio_may_be_lru_cached() unless folio_test_large() Hugh Dickins <hughd(a)google.com> mm: revert "mm/gup: clear the LRU flag of a page before adding to LRU batch" Hugh Dickins <hughd(a)google.com> mm/gup: local lru_add_drain() to avoid lru_add_drain_all() Dan Carpenter <dan.carpenter(a)linaro.org> octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: lantiq_gswip: suppress -EINVAL errors for bridge FDB entries added to the CPU port Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup() Ido Schimmel <idosch(a)nvidia.com> selftests: fib_nexthops: Fix creation of non-FDB nexthops Ido Schimmel <idosch(a)nvidia.com> nexthop: Forbid FDB status change while nexthop is in a group Jason Baron <jbaron(a)akamai.com> net: allow alloc_skb_with_frags() to use MAX_SKB_FRAGS Alok Tiwari <alok.a.tiwari(a)oracle.com> bnxt_en: correct offset handling for IPv6 destination address Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> vhost: Take a reference on the task in struct vhost_task. Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: hci_sync: Fix hci_resume_advertising_sync Petr Malat <oss(a)malat.biz> ethernet: rvu-af: Remove slash from the driver name Sidraya Jayagond <sidraya(a)linux.ibm.com> net/smc: fix warning in smc_rx_splice() when calling get_page() Wang Liang <wangliang74(a)huawei.com> net: tun: Update napi->skb after XDP process Stéphane Grosjean <stephane.grosjean(a)hms-networks.com> can: peak_usb: fix shift-out-of-bounds issue Vincent Mailhol <mailhol(a)kernel.org> can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: hi311x: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow Sabrina Dubroca <sd(a)queasysnail.net> xfrm: xfrm_alloc_spi shouldn't use 0 as SPI Leon Hwang <leon.hwang(a)linux.dev> bpf: Reject bpf_timer for PREEMPT_RT Geert Uytterhoeven <geert+renesas(a)glider.be> can: rcar_can: rcar_can_resume(): fix s2ram with PSCI James Guan <guan_yufei(a)163.com> wifi: virt_wifi: Fix page fault on connect Mark Harmstone <mark(a)harmstone.com> btrfs: don't allow adding block device of less than 1 MB Jiri Olsa <olsajiri(a)gmail.com> bpf: Check the helper function is valid in get_helper_proto Stefan Metzmacher <metze(a)samba.org> smb: server: use disable_work_sync in transport_rdma.c Stefan Metzmacher <metze(a)samba.org> smb: server: don't use delayed_work for post_recv_credits_work Christian Loehle <christian.loehle(a)arm.com> cpufreq: Initialize cpufreq-based invariance before subsys Jihed Chaibi <jihed.chaibi.dev(a)gmail.com> ARM: dts: kirkwood: Fix sound DAI cells for OpenRD clients Peng Fan <peng.fan(a)nxp.com> arm64: dts: imx8mp: Correct thermal sensor index Peng Fan <peng.fan(a)nxp.com> firmware: imx: Add stub functions for SCMI MISC API Basavaraj Natikar <Basavaraj.Natikar(a)amd.com> HID: amd_sfh: Add sync across amd sfh work functions Or Har-Toov <ohartoov(a)nvidia.com> IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions Aleksander Jan Bajkowski <olek2(a)wp.pl> net: sfp: add quirk for FLYPRO copper SFP+ module qaqland <anguoli(a)uniontech.com> ALSA: usb-audio: Add mute TLV for playback volumes on more devices Cryolitia PukNgae <cryolitia(a)uniontech.com> ALSA: usb-audio: move mixer_quirks' min_mute into common quirk noble.yang <noble.yang(a)comtrue-inc.com> ALSA: usb-audio: Add DSD support for Comtrue USB Audio device Heikki Krogerus <heikki.krogerus(a)linux.intel.com> i2c: designware: Add quirk for Intel Xe Benoît Monin <benoit.monin(a)bootlin.com> mmc: sdhci-cadence: add Mobileye eyeQ support Chris Morgan <macromorgan(a)hotmail.com> net: sfp: add quirk for Potron SFP+ XGSPON ONU Stick Marc Kleine-Budde <mkl(a)pengutronix.de> net: fec: rename struct fec_devinfo fec_imx6x_info -> fec_imx6sx_info Jiayi Li <lijiayi(a)kylinos.cn> usb: core: Add 0x prefix to quirks debug output Takashi Iwai <tiwai(a)suse.de> ALSA: usb-audio: Fix build with CONFIG_INPUT=n Stefan Binding <sbinding(a)opensource.cirrus.com> ALSA: hda/realtek: Add support for ASUS NUC using CS35L41 HDA Chen Ni <nichen(a)iscas.ac.cn> ALSA: usb-audio: Convert comma to semicolon Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: specify that Apple Touch Bar is direct Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: take cls->maxcontacts into account for Apple Touch Bar even without a HID_DG_CONTACTMAX field Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: support getting the tip state from HID_DG_TOUCH fields in Apple Touch Bar Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: Get the contact ID from HID_DG_TRANSDUCER_INDEX fields in case of Apple Touch Bar Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5 Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Simplify NULL comparison in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Avoid multiple assignments in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Drop unnecessary parentheses in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Fix block comments in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Fix code alignment in mixer_quirks Takashi Sakamoto <o-takashi(a)sakamocchi.jp> firewire: core: fix overlooked update of subsystem ABI version Alok Tiwari <alok.a.tiwari(a)oracle.com> scsi: ufs: mcq: Fix memory allocation checks for SQE and CQE ------------- Diffstat: Documentation/admin-guide/laptops/lg-laptop.rst | 4 +- Makefile | 4 +- .../dts/intel/socfpga/socfpga_cyclone5_sodia.dts | 6 +- .../boot/dts/marvell/kirkwood-openrd-client.dts | 2 +- arch/arm64/boot/dts/freescale/imx8mp.dtsi | 4 +- arch/arm64/boot/dts/marvell/cn9132-clearfog.dts | 16 +- arch/arm64/boot/dts/marvell/cn9132-sr-cex7.dtsi | 8 + drivers/cpufreq/cpufreq.c | 20 +- drivers/firewire/core-cdev.c | 2 +- drivers/gpio/gpiolib.c | 21 +- drivers/gpu/drm/ast/ast_dp.c | 2 +- drivers/gpu/drm/gma500/oaktrail_hdmi.c | 2 +- drivers/gpu/drm/panthor/panthor_sched.c | 8 +- drivers/hid/amd-sfh-hid/amd_sfh_client.c | 12 +- drivers/hid/amd-sfh-hid/amd_sfh_common.h | 3 + drivers/hid/amd-sfh-hid/amd_sfh_pcie.c | 4 + drivers/hid/hid-asus.c | 3 + drivers/hid/hid-multitouch.c | 45 +- drivers/i2c/busses/i2c-designware-platdrv.c | 7 +- drivers/infiniband/hw/mlx5/devx.c | 1 + drivers/iommu/iommufd/fault.c | 4 +- drivers/iommu/iommufd/main.c | 34 +- drivers/mmc/host/sdhci-cadence.c | 11 + drivers/net/can/rcar/rcar_can.c | 8 +- drivers/net/can/spi/hi311x.c | 1 + drivers/net/can/sun4i_can.c | 1 + drivers/net/can/usb/etas_es58x/es58x_core.c | 3 +- drivers/net/can/usb/mcba_usb.c | 1 + drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 +- drivers/net/dsa/lantiq_gswip.c | 21 +- drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 2 +- drivers/net/ethernet/freescale/fec_main.c | 4 +- drivers/net/ethernet/intel/i40e/i40e.h | 3 +- drivers/net/ethernet/intel/i40e/i40e_main.c | 26 +- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 110 +++-- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h | 3 +- drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 3 +- .../net/ethernet/marvell/octeontx2/nic/otx2_tc.c | 2 +- drivers/net/phy/sfp.c | 24 +- drivers/net/tun.c | 3 + drivers/net/wireless/virtual/virt_wifi.c | 4 +- drivers/platform/x86/lg-laptop.c | 34 +- drivers/ufs/core/ufs-mcq.c | 4 +- drivers/usb/core/quirks.c | 2 +- drivers/usb/host/xhci-dbgcap.c | 2 +- drivers/usb/host/xhci-mem.c | 50 +- drivers/usb/host/xhci.c | 2 +- drivers/usb/host/xhci.h | 6 +- drivers/video/fbdev/core/fbcon.c | 13 +- fs/afs/server.c | 3 +- fs/btrfs/volumes.c | 5 + fs/hugetlbfs/inode.c | 10 +- fs/proc/task_mmu.c | 3 + fs/smb/client/smb2inode.c | 2 +- fs/smb/server/transport_rdma.c | 22 +- include/crypto/if_alg.h | 2 +- include/linux/firmware/imx/sm.h | 12 + include/linux/swap.h | 10 + include/net/bluetooth/hci_core.h | 21 + kernel/bpf/core.c | 5 +- kernel/bpf/verifier.c | 6 +- kernel/futex/requeue.c | 6 +- kernel/trace/trace_dynevent.c | 4 + kernel/vhost_task.c | 3 +- mm/gup.c | 15 +- mm/kmsan/core.c | 10 +- mm/kmsan/kmsan_test.c | 16 + mm/mlock.c | 6 +- mm/swap.c | 51 +- net/bluetooth/hci_event.c | 26 +- net/bluetooth/hci_sync.c | 7 + net/core/skbuff.c | 2 +- net/ipv4/nexthop.c | 7 + net/smc/smc_loopback.c | 14 +- net/xfrm/xfrm_state.c | 3 + sound/pci/hda/patch_realtek.c | 11 + sound/usb/mixer_quirks.c | 545 +++++++++++++++------ sound/usb/quirks.c | 24 +- sound/usb/usbaudio.h | 4 + tools/testing/selftests/net/fib_nexthops.sh | 12 +- 80 files changed, 1037 insertions(+), 387 deletions(-)

1 month, 4 weeks

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Re: [PATCH v1] ALSA: hda/tas2781: Fix a potential race condition that causes a NULL pointer in case no efi.get_variable exsits

by Gergo Koteles

Cc: <stable(a)vger.kernel.org> On Thu, 2025-09-11 at 15:11 +0800, Shenghao Ding wrote: > A a potential race condition reported by one of my customers that leads to > a NULL pointer dereference, where the call to efi.get_variable should be > guarded with efi_rt_services_supported() to ensure that function exists. > > Fixes: 4fe238513407 ("ALSA: hda/tas2781: Move and unified the calibrated-data getting function for SPI and I2C into the tas2781_hda lib") > Signed-off-by: Shenghao Ding <shenghao-ding(a)ti.com> > --- > sound/hda/codecs/side-codecs/tas2781_hda.c | 5 +++++ > sound/hda/codecs/side-codecs/tas2781_hda_i2c.c | 5 +++++ > 2 files changed, 10 insertions(+) > > diff --git a/sound/hda/codecs/side-codecs/tas2781_hda.c b/sound/hda/codecs/side-codecs/tas2781_hda.c > index 536940c78f00..96e6d82dc69e 100644 > --- a/sound/hda/codecs/side-codecs/tas2781_hda.c > +++ b/sound/hda/codecs/side-codecs/tas2781_hda.c > @@ -193,6 +193,11 @@ int tas2781_save_calibration(struct tas2781_hda *hda) > efi_status_t status; > int i; > > + if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE)) { > + dev_err(p->dev, "%s: NO EFI FOUND!\n", __func__); > + return -EINVAL; > + } > + > if (hda->catlog_id < LENOVO) > efi_guid = tasdev_fct_efi_guid[hda->catlog_id]; > > diff --git a/sound/hda/codecs/side-codecs/tas2781_hda_i2c.c b/sound/hda/codecs/side-codecs/tas2781_hda_i2c.c > index 008dbe1490a7..4dea442d8c30 100644 > --- a/sound/hda/codecs/side-codecs/tas2781_hda_i2c.c > +++ b/sound/hda/codecs/side-codecs/tas2781_hda_i2c.c > @@ -317,6 +317,11 @@ static int tas2563_save_calibration(struct tas2781_hda *h) > unsigned int attr; > int ret, i, j, k; > > + if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE)) { > + dev_err(p->dev, "%s: NO EFI FOUND!\n", __func__); > + return -EINVAL; > + } > + > cd->cali_dat_sz_per_dev = TAS2563_CAL_DATA_SIZE * TASDEV_CALIB_N; > > /* extra byte for each device is the device number */

1 month, 4 weeks

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Re: [PATCH v4] ALSA: hda/tas2781: Fix the order of TAS2781 calibrated-data

by Gergo Koteles

Cc: <stable(a)vger.kernel.org> On Mon, 2025-09-08 at 06:27 +0800, Shenghao Ding wrote: > A bug reported by one of my customers that the order of TAS2781 > calibrated-data is incorrect, the correct way is to move R0_Low > and insert it between R0 and InvR0. > > Fixes: 4fe238513407 ("ALSA: hda/tas2781: Move and unified the calibrated-data getting function for SPI and I2C into the tas2781_hda lib") > Signed-off-by: Shenghao Ding <shenghao-ding(a)ti.com> > > --- > v4: > - Add missing base into cali_cnv(). > v3: > - Take Tiwai's advice on cali_cnv() to make it more simpler. > v2: > - Submit to the sound branch maintained by Tiwai instead of linux-next > branch > - Drop other fix > --- > sound/hda/codecs/side-codecs/tas2781_hda.c | 25 +++++++++++++++++----- > 1 file changed, 20 insertions(+), 5 deletions(-) > > diff --git a/sound/hda/codecs/side-codecs/tas2781_hda.c b/sound/hda/codecs/side-codecs/tas2781_hda.c > index f46d2e06c64f..536940c78f00 100644 > --- a/sound/hda/codecs/side-codecs/tas2781_hda.c > +++ b/sound/hda/codecs/side-codecs/tas2781_hda.c > @@ -33,6 +33,23 @@ const efi_guid_t tasdev_fct_efi_guid[] = { > }; > EXPORT_SYMBOL_NS_GPL(tasdev_fct_efi_guid, "SND_HDA_SCODEC_TAS2781"); > > +/* > + * The order of calibrated-data writing function is a bit different from the > + * order in UEFI. Here is the conversion to match the order of calibrated-data > + * writing function. > + */ > +static void cali_cnv(unsigned char *data, unsigned int base, int offset) > +{ > + struct cali_reg reg_data; > + > + memcpy(&reg_data, &data[base], sizeof(reg_data)); > + /* the data order has to be swapped between r0_low_reg and inv0_reg */ > + swap(reg_data.r0_low_reg, reg_data.invr0_reg); > + > + cpu_to_be32_array((__force __be32 *)(data + offset + 1), > + (u32 *)&reg_data, TASDEV_CALIB_N); > +} > + > static void tas2781_apply_calib(struct tasdevice_priv *p) > { > struct calidata *cali_data = &p->cali_data; > @@ -103,8 +120,7 @@ static void tas2781_apply_calib(struct tasdevice_priv *p) > > data[l] = k; > oft++; > - for (i = 0; i < TASDEV_CALIB_N * 4; i++) > - data[l + i + 1] = data[4 * oft + i]; > + cali_cnv(data, 4 * oft, l); > k++; > } > } > @@ -130,9 +146,8 @@ static void tas2781_apply_calib(struct tasdevice_priv *p) > > for (j = p->ndev - 1; j >= 0; j--) { > l = j * (cali_data->cali_dat_sz_per_dev + 1); > - for (i = TASDEV_CALIB_N * 4; i > 0 ; i--) > - data[l + i] = data[p->index * 5 + i]; > - data[l+i] = j; > + cali_cnv(data, cali_data->cali_dat_sz_per_dev * j, l); > + data[l] = j; > } > } >

1 month, 4 weeks

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ATTENTION :Password key expired !!!

by lists.linaro.org

Hello, I want a quote and I would like to know your availability so that i can send you the necessary documents as well as drawings and specification. Best regards Tony

1 month, 4 weeks

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[PATCH v2] loop: fix backing file reference leak on validation error

by Li Chen

loop_change_fd() and loop_configure() call loop_check_backing_file() to validate the new backing file. If validation fails, the reference acquired by fget() was not dropped, leaking a file reference. Fix this by calling fput(file) before returning the error. Cc: stable(a)vger.kernel.org Cc: "Markus Elfring"<Markus.Elfring(a)web.de> CC: "Yang Erkun" <yangerkun(a)huawei.com> Cc: "Ming Lei"<ming.lei(a)redhat.com> Cc: "Yu Kuai"<yukuai1(a)huaweicloud.com> Fixes: f5c84eff634b ("loop: Add sanity check for read/write_iter") Signed-off-by: Li Chen <chenl311(a)chinatelecom.cn> Reviewed-by: Ming Lei <ming.lei(a)redhat.com> Reviewed-by: Yang Erkun <yangerkun(a)huawei.com> --- changelog: v2: add review by, Fixes and cc stable tags. drivers/block/loop.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 053a086d547e..94ec7f747f36 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -551,8 +551,10 @@ static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, return -EBADF; error = loop_check_backing_file(file); - if (error) + if (error) { + fput(file); return error; + } /* suppress uevents while reconfiguring the device */ dev_set_uevent_suppress(disk_to_dev(lo->lo_disk), 1); @@ -993,8 +995,10 @@ static int loop_configure(struct loop_device *lo, blk_mode_t mode, return -EBADF; error = loop_check_backing_file(file); - if (error) + if (error) { + fput(file); return error; + } is_loop = is_loop_device(file); -- 2.51.0

1 month, 4 weeks

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ATTENTION :Password key expired !!!

by lists.linaro.org

Hello, I want a quote and I would like to know your availability so that i can send you the necessary documents as well as drawings and specification. Best regards Tony

1 month, 4 weeks

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[PATCH] commit 6b080c4e815ceba3c08ffa980c858595c07e786a upstream

by Zhichuang Sun

iommu/amd: fix amd iotlb flush range in unmap This was fixed in mainline in 6b080c4e815ceba3c08ffa980c858595c07e786a, but do not backport the full refactor. Targeting branch lts linux-5.15.y. AMD IOMMU driver supports power of 2 KB page size, it can be 4K, 8K, 16K, etc. So when VFIO driver ask AMD IOMMU driver to unmap a IOVA with a page_size 4K, it actually can unmap a page_size of 8K, depending on the page used during mapping. However, the iotlb gather function use the page_size as the range of unmap range, instead of the real unmapped page size r. This miscalculation of iotlb flush range will make the unflushed IOTLB entry stale. It triggered hard-to-debug silent data corruption issue as DMA engine who used the stale IOTLB entry will DMA into unmapped memory region. The upstream commit aims at changing API from map/unmap_page() to map/unmap_pages() and changed the gather range calculation along with it. It accidentally fixed this bug in the mainline since 6.1. For this backport, we don't backport the API change, only port the gather range calculation to fix the bug. Cc: Nadav Amit <namit(a)vmware.com> Cc: Joerg Roedel <joro(a)8bytes.org> Cc: Will Deacon <will(a)kernel.org> Cc: Robin Murphy <robin.murphy(a)arm.com> Cc: Lu Baolu <baolu.lu(a)linux.intel.com> Cc: iommu(a)lists.linux-foundation.org Fixes: fc65d0acaf23179b94de399c204328fa259acb90 Signed-off-by: Zhichuang Sun <zhichuang(a)google.com> --- drivers/iommu/amd/iommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index 714c78bf69db..d3a11be8d1dd 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -2121,7 +2121,8 @@ static size_t amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova, r = (ops->unmap) ? ops->unmap(ops, iova, page_size, gather) : 0; - amd_iommu_iotlb_gather_add_page(dom, gather, iova, page_size); + if (r) + amd_iommu_iotlb_gather_add_page(dom, gather, iova, r); return r; } -- 2.51.0.618.g983fd99d29-goog

1 month, 4 weeks

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[PATCH 00/19 5.15.y] Backport minmax.h updates from v6.17-rc7

by Eliav Farber

This series backports 19 patches to update minmax.h in the 5.15.y branch, aligning it with v6.17-rc7. The ultimate goal is to synchronize all longterm branches so that they include the full set of minmax.h changes (6.12.y and 6.6.y were already backported by me and are now aligned, 6.1.y is in progress). The key motivation is to bring in commit d03eba99f5bf ("minmax: allow min()/max()/clamp() if the arguments have the same signedness"), which is missing in kernel 5.10.y. In mainline, this change enables min()/max()/clamp() to accept mixed argument types, provided both have the same signedness. Without it, backported patches that use these forms may trigger compiler warnings, which escalate to build failures when -Werror is enabled. Andy Shevchenko (1): minmax: deduplicate __unconst_integer_typeof() David Laight (8): minmax: fix indentation of __cmp_once() and __clamp_once() minmax.h: add whitespace around operators and after commas minmax.h: update some comments minmax.h: reduce the #define expansion of min(), max() and clamp() minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp() minmax.h: move all the clamp() definitions after the min/max() ones minmax.h: simplify the variants of clamp() minmax.h: remove some #defines that are only expanded once Herve Codina (1): minmax: Introduce {min,max}_array() Linus Torvalds (8): minmax: avoid overly complicated constant expressions in VM code minmax: make generic MIN() and MAX() macros available everywhere minmax: add a few more MIN_T/MAX_T users minmax: simplify and clarify min_t()/max_t() implementation minmax: simplify min()/max()/clamp() implementation minmax: don't use max() in situations that want a C constant expression minmax: improve macro expansion and type checking minmax: fix up min3() and max3() too Matthew Wilcox (Oracle) (1): minmax: add in_range() macro arch/arm/mm/pageattr.c | 6 +- arch/um/drivers/mconsole_user.c | 2 + arch/x86/mm/pgtable.c | 2 +- drivers/edac/sb_edac.c | 4 +- drivers/edac/skx_common.h | 1 - drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 + .../drm/amd/display/modules/hdcp/hdcp_ddc.c | 2 + .../drm/amd/pm/powerplay/hwmgr/ppevvmath.h | 14 +- .../amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 2 + .../drm/arm/display/include/malidp_utils.h | 2 +- .../display/komeda/komeda_pipeline_state.c | 24 +- drivers/gpu/drm/drm_color_mgmt.c | 2 +- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 6 - drivers/gpu/drm/radeon/evergreen_cs.c | 2 + drivers/hwmon/adt7475.c | 24 +- drivers/input/touchscreen/cyttsp4_core.c | 2 +- drivers/irqchip/irq-sun6i-r.c | 2 +- drivers/md/dm-integrity.c | 4 +- drivers/media/dvb-frontends/stv0367_priv.h | 3 + .../net/ethernet/chelsio/cxgb3/cxgb3_main.c | 18 +- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 2 +- drivers/net/fjes/fjes_main.c | 4 +- drivers/nfc/pn544/i2c.c | 2 - drivers/platform/x86/sony-laptop.c | 1 - drivers/scsi/isci/init.c | 6 +- .../pci/hive_isp_css_include/math_support.h | 5 - drivers/virt/acrn/ioreq.c | 4 +- fs/btrfs/misc.h | 2 - fs/btrfs/tree-checker.c | 2 +- fs/ext2/balloc.c | 2 - fs/ext4/ext4.h | 2 - fs/ufs/util.h | 6 - include/linux/compiler.h | 9 + include/linux/minmax.h | 264 +++++++++++++----- kernel/trace/preemptirq_delay_test.c | 2 - lib/btree.c | 1 - lib/decompress_unlzma.c | 2 + lib/logic_pio.c | 3 - lib/vsprintf.c | 2 +- lib/zstd/zstd_internal.h | 2 - mm/zsmalloc.c | 1 - net/ipv4/proc.c | 2 +- net/ipv6/proc.c | 2 +- net/netfilter/nf_nat_core.c | 6 +- net/tipc/core.h | 2 +- net/tipc/link.c | 10 +- tools/testing/selftests/vm/mremap_test.c | 2 + 47 files changed, 289 insertions(+), 183 deletions(-) -- 2.47.3

1 month, 4 weeks

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[PATCH 6.1.y] selftests: mptcp: connect: fix build regression caused by backport

by Kenta Akagi

Since v6.1.154, mptcp selftests have failed to build with the following errors: mptcp_connect.c: In function ‘main_loop_s’: mptcp_connect.c:1040:59: error: ‘winfo’ undeclared (first use in this function) 1040 | err = copyfd_io(fd, remotesock, 1, true, &winfo); | ^~~~~ mptcp_connect.c:1040:59: note: each undeclared identifier is reported only once for each function it appears in mptcp_connect.c:1040:23: error: too many arguments to function ‘copyfd_io’; expected 4, have 5 1040 | err = copyfd_io(fd, remotesock, 1, true, &winfo); | ^~~~~~~~~ ~~~~~~ mptcp_connect.c:845:12: note: declared here 845 | static int copyfd_io(int infd, int peerfd, int outfd, bool close_peerfd) | ^~~~~~~~~ This is caused by commit ff160500c499 ("selftests: mptcp: connect: catch IO errors on listen side"), a backport of upstream 14e22b43df25, which attempts to use the undeclared variable 'winfo' and passes too many arguments to copyfd_io(). Both the winfo variable and the updated copyfd_io() function were introduced in upstream commit ca7ae8916043 ("selftests: mptcp: mptfo Initiator/Listener"), which is not present in v6.1.y. The goal of the backport is to stop on errors from copyfd_io. Therefore, the backport does not depend on the changes in upstream commit ca7ae8916043 ("selftests: mptcp: mptfo Initiator/Listener"). This commit simply removes ', &winfo' to fix a build failure. Fixes: ff160500c499 ("selftests: mptcp: connect: catch IO errors on listen side") Signed-off-by: Kenta Akagi <k(a)mgml.me> --- commit 14e22b43df25 ("selftests: mptcp: connect: catch IO errors on listen side") has only been backported to >=v6.1.y, and commit ca7ae8916043 ("selftests: mptcp: mptfo Initiator/Listener") exists from v6.2. so, only v6.1.y requires this fix. --- tools/testing/selftests/net/mptcp/mptcp_connect.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.c b/tools/testing/selftests/net/mptcp/mptcp_connect.c index 0d49b6753011..0b253c133f06 100644 --- a/tools/testing/selftests/net/mptcp/mptcp_connect.c +++ b/tools/testing/selftests/net/mptcp/mptcp_connect.c @@ -1037,7 +1037,7 @@ int main_loop_s(int listensock) SOCK_TEST_TCPULP(remotesock, 0); - err = copyfd_io(fd, remotesock, 1, true, &winfo); + err = copyfd_io(fd, remotesock, 1, true); } else { perror("accept"); return 1; -- 2.50.1

1 month, 4 weeks

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[PATCH RESEND] PCI/AER: Check for NULL aer_info before ratelimiting in pci_print_aer()

by Breno Leitao

Similarly to pci_dev_aer_stats_incr(), pci_print_aer() may be called when dev->aer_info is NULL. Add a NULL check before proceeding to avoid calling aer_ratelimit() with a NULL aer_info pointer, returning 1, which does not rate limit, given this is fatal. This prevents a kernel crash triggered by dereferencing a NULL pointer in aer_ratelimit(), ensuring safer handling of PCI devices that lack AER info. This change aligns pci_print_aer() with pci_dev_aer_stats_incr() which already performs this NULL check. Cc: stable(a)vger.kernel.org Fixes: a57f2bfb4a5863 ("PCI/AER: Ratelimit correctable and non-fatal error logging") Signed-off-by: Breno Leitao <leitao(a)debian.org> --- - This problem is still happening in upstream, and unfortunately no action was done in the previous discussion. - Link to previous post: https://lore.kernel.org/r/20250804-aer_crash_2-v1-1-fd06562c18a4@debian.org --- drivers/pci/pcie/aer.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index e286c197d7167..55abc5e17b8b1 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -786,6 +786,9 @@ static void pci_rootport_aer_stats_incr(struct pci_dev *pdev, static int aer_ratelimit(struct pci_dev *dev, unsigned int severity) { + if (!dev->aer_info) + return 1; + switch (severity) { case AER_NONFATAL: return __ratelimit(&dev->aer_info->nonfatal_ratelimit); --- base-commit: e5f0a698b34ed76002dc5cff3804a61c80233a7a change-id: 20250801-aer_crash_2-b21cc2ef0d00 Best regards, -- Breno Leitao <leitao(a)debian.org>

1 month, 4 weeks

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[PATCH v3 00/11 6.1.y] Backport minmax.h updates from v6.17-rc7

by Eliav Farber

This series backports 13 patches to update minmax.h in the 6.1.y branch, aligning it with v6.17-rc7. The ultimate goal is to synchronize all longterm branches so that they include the full set of minmax.h changes (6.12.y and 6.6.y were already backported by me and are now ligned). The key motivation is to bring in commit d03eba99f5bf ("minmax: allow min()/max()/clamp() if the arguments have the same signedness"), which is missing in older kernels. In mainline, this change enables min()/max()/clamp() to accept mixed argument types, provided both have the same signedness. Without it, backported patches that use these forms may trigger compiler warnings, which escalate to build failures when -Werror is enabled. Changes in v3: - v2 included 13 patches: https://lore.kernel.org/stable/20250929183358.18982-1-farbere@amazon.com/ - First 2 were accepted and are part of 6.1.155. - 3rd caused build in drivers/md/ to fail: In file included from ./include/linux/container_of.h:5, from ./include/linux/list.h:5, from ./include/linux/wait.h:7, from ./include/linux/mempool.h:8, from ./include/linux/bio.h:8, from drivers/md/dm-bio-record.h:10, from drivers/md/dm-integrity.c:9: drivers/md/dm-integrity.c: In function ‘integrity_metadata’: drivers/md/dm-integrity.c:131:105: error: ISO C90 forbids variable length array ‘checksums_onstack’ [-Werror=vla] 131 | #define MAX_TAG_SIZE (JOURNAL_SECTOR_DATA - JOURNAL_MAC_PER_SECTOR - offsetof(struct journal_entry, last_bytes[MAX_SECTORS_PER_BLOCK])) | ^~~~~~~~~~~~~ ./include/linux/build_bug.h:78:56: note: in definition of macro ‘__static_assert’ 78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) | ^~~~ ./include/linux/minmax.h:56:9: note: in expansion of macro ‘static_assert’ 56 | static_assert(__types_ok(x, y, ux, uy), \ | ^~~~~~~~~~~~~ ./include/linux/minmax.h:41:31: note: in expansion of macro ‘__is_noneg_int’ 41 | __is_noneg_int(x) || __is_noneg_int(y)) | ^~~~~~~~~~~~~~ ./include/linux/minmax.h:56:23: note: in expansion of macro ‘__types_ok’ 56 | static_assert(__types_ok(x, y, ux, uy), \ | ^~~~~~~~~~ ./include/linux/minmax.h:61:9: note: in expansion of macro ‘__careful_cmp_once’ 61 | __careful_cmp_once(op, x, y, __UNIQUE_ID(x_), __UNIQUE_ID(y_)) | ^~~~~~~~~~~~~~~~~~ ./include/linux/minmax.h:92:25: note: in expansion of macro ‘__careful_cmp’ 92 | #define max(x, y) __careful_cmp(max, x, y) | ^~~~~~~~~~~~~ drivers/md/dm-integrity.c:1797:40: note: in expansion of macro ‘max’ 1797 | char checksums_onstack[max((size_t)HASH_MAX_DIGESTSIZE, MAX_TAG_SIZE)]; | ^~~ drivers/md/dm-integrity.c:131:89: note: in expansion of macro ‘offsetof’ 131 | #define MAX_TAG_SIZE (JOURNAL_SECTOR_DATA - JOURNAL_MAC_PER_SECTOR - offsetof(struct journal_entry, last_bytes[MAX_SECTORS_PER_BLOCK])) | ^~~~~~~~ drivers/md/dm-integrity.c:1797:73: note: in expansion of macro ‘MAX_TAG_SIZE’ 1797 | char checksums_onstack[max((size_t)HASH_MAX_DIGESTSIZE, MAX_TAG_SIZE)]; | ^~~~~~~~~~~~ - The build was fixed in the second patch of this series. Changes in v2: - v1 included 19 patches: https://lore.kernel.org/stable/20250924202320.32333-1-farbere@amazon.com/ - First 6 were pushed to the stable-tree. - 7th cauded amd driver's build to fail. - This change fixes it. - Modified files: drivers/gpu/drm/amd/amdgpu/amdgpu.h drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c David Laight (7): minmax.h: add whitespace around operators and after commas minmax.h: update some comments minmax.h: reduce the #define expansion of min(), max() and clamp() minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp() minmax.h: move all the clamp() definitions after the min/max() ones minmax.h: simplify the variants of clamp() minmax.h: remove some #defines that are only expanded once Linus Torvalds (4): minmax: simplify min()/max()/clamp() implementation minmax: don't use max() in situations that want a C constant expression minmax: improve macro expansion and type checking minmax: fix up min3() and max3() too drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c | 2 +- drivers/input/touchscreen/cyttsp4_core.c | 2 +- drivers/irqchip/irq-sun6i-r.c | 2 +- drivers/md/dm-integrity.c | 2 +- fs/btrfs/tree-checker.c | 2 +- include/linux/compiler.h | 9 + include/linux/minmax.h | 222 +++++++++++++---------- lib/vsprintf.c | 2 +- 8 files changed, 143 insertions(+), 100 deletions(-) -- 2.47.3

1 month, 4 weeks

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1 month, 4 weeks

1
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[PATCH v3 0/3] ASoC: SOF: ipc4/Intel: Fix the host buffer constraint

by Peter Ujfalusi

Hi, CHanges since v2: - SHA fix for the last commit, tripple checked them Changes since v1: - SHAs for Fixes tag corrected (sorry) The size of the DSP host buffer was incorrectly defined as 2ms while it is 4ms and the ChainDMA PCMs are using 5ms as host facing buffer. The constraint will be set against the period time rather than the buffer time to make sure that application will not face with xruns when the DMA bursts to refill the host buffer. The minimal period size will be also used by Pipewire in case of SOF cards to set the headroom to a length which will avoid the cases when the hw_ptr jumps over the appl_ptr because of a burst. Iow, it will make Pipewire to keep a safe distance from the hw_ptr. https://github.com/thesofproject/linux/issues/5284 https://gitlab.freedesktop.org/pipewire/wireplumber/-/merge_requests/740 https://gitlab.freedesktop.org/pipewire/pipewire/-/merge_requests/2548 Regards, Peter --- Peter Ujfalusi (3): ASoC: SOF: ipc4-topology: Correct the minimum host DMA buffer size ASoC: SOF: ipc4-topology: Account for different ChainDMA host buffer size ASoC: SOF: Intel: hda-pcm: Place the constraint on period time instead of buffer time sound/soc/sof/intel/hda-pcm.c | 29 +++++++++++++++++++++-------- sound/soc/sof/ipc4-topology.c | 9 +++++++-- sound/soc/sof/ipc4-topology.h | 7 +++++-- 3 files changed, 33 insertions(+), 12 deletions(-) -- 2.51.0

1 month, 4 weeks

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[PATCH 0/3] ASoC: SOF: ipc4/Intel: Fix the host buffer constraint

by Peter Ujfalusi

Hi, The size of the DSP host buffer was incorrectly defined as 2ms while it is 4ms and the ChainDMA PCMs are using 5ms as host facing buffer. The constraint will be set against the period time rather than the buffer time to make sure that application will not face with xruns when the DMA bursts to refill the host buffer. The minimal period size will be also used by Pipewire in case of SOF cards to set the headroom to a length which will avoid the cases when the hw_ptr jumps over the appl_ptr because of a burst. Iow, it will make Pipewire to keep a safe distance from the hw_ptr. https://github.com/thesofproject/linux/issues/5284 https://gitlab.freedesktop.org/pipewire/wireplumber/-/merge_requests/740 https://gitlab.freedesktop.org/pipewire/pipewire/-/merge_requests/2548 Regards, Peter --- Peter Ujfalusi (3): ASoC: SOF: ipc4-topology: Correct the minimum host DMA buffer size ASoC: SOF: ipc4-topology: Account for different ChainDMA host buffer size ASoC: SOF: Intel: hda-pcm: Place the constraint on period time instead of buffer time sound/soc/sof/intel/hda-pcm.c | 29 +++++++++++++++++++++-------- sound/soc/sof/ipc4-topology.c | 9 +++++++-- sound/soc/sof/ipc4-topology.h | 7 +++++-- 3 files changed, 33 insertions(+), 12 deletions(-) -- 2.51.0

1 month, 4 weeks

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[PATCH v2] stable: crypto: sha256 - fix crash at kexec

by Breno Leitao

Loading a large (~2.1G) files with kexec crashes the host with when running: # kexec --load kernel --initrd initrd_with_2G_or_more UBSAN: signed-integer-overflow in ./include/crypto/sha256_base.h:64:19 34152083 * 64 cannot be represented in type 'int' ... BUG: unable to handle page fault for address: ff9fffff83b624c0 sha256_update (lib/crypto/sha256.c:137) crypto_sha256_update (crypto/sha256_generic.c:40) kexec_calculate_store_digests (kernel/kexec_file.c:769) __se_sys_kexec_file_load (kernel/kexec_file.c:397 kernel/kexec_file.c:332) ... (Line numbers based on commit da274362a7bd9 ("Linux 6.12.49") This started happening after commit f4da7afe07523f ("kexec_file: increase maximum file size to 4G") that landed in v6.0, which increased the file size for kexec. This is not happening upstream (v6.16+), given that `block` type was upgraded from "int" to "size_t" in commit 74a43a2cf5e8 ("crypto: lib/sha256 - Move partial block handling out") Upgrade the block type similar to the commit above, avoiding hitting the overflow. This patch is only suitable for the stable tree, and before 6.16, which got commit 74a43a2cf5e8 ("crypto: lib/sha256 - Move partial block handling out"). This is not required before f4da7afe07523f ("kexec_file: increase maximum file size to 4G"). In other words, this fix is required between versions v6.0 and v6.16. Signed-off-by: Breno Leitao <leitao(a)debian.org> Fixes: f4da7afe07523f ("kexec_file: increase maximum file size to 4G") # Before v6.16 Reported-by: Michael van der Westhuizen <rmikey(a)meta.com> Reported-by: Tobias Fleig <tfleig(a)meta.com> --- Changes in v2: - s/size_t/unsigned int/ as suggested by Eric - Tag the commit that introduce the problem as Fixes, making backport easier. - Link to v1: https://lore.kernel.org/r/20251001-stable_crash-v1-1-3071c0bd795e@debian.org --- include/crypto/sha256_base.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/crypto/sha256_base.h b/include/crypto/sha256_base.h index e0418818d63c8..e3e610cfe8d30 100644 --- a/include/crypto/sha256_base.h +++ b/include/crypto/sha256_base.h @@ -44,7 +44,7 @@ static inline int lib_sha256_base_do_update(struct sha256_state *sctx, sctx->count += len; if (unlikely((partial + len) >= SHA256_BLOCK_SIZE)) { - int blocks; + unsigned int blocks; if (partial) { int p = SHA256_BLOCK_SIZE - partial; --- base-commit: da274362a7bd9ab3a6e46d15945029145ebce672 change-id: 20251001-stable_crash-f2151baf043b Best regards, -- Breno Leitao <leitao(a)debian.org>

1 month, 4 weeks

3
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[PATCH] ASoC: SOF: ipc3-topology: Fix multi-core and static pipelines tear down

by Peter Ujfalusi

From: Ranjani Sridharan <ranjani.sridharan(a)linux.intel.com> In the case of static pipelines, freeing the widgets in the pipelines that were not suspended after freeing the scheduler widgets results in errors because the secondary cores are powered off when the scheduler widgets are freed. Fix this by tearing down the leftover pipelines before powering off the secondary cores. Cc: stable(a)vger.kernel.org Fixes: d7332c4a4f1a ("ASoC: SOF: ipc3-topology: Fix pipeline tear down logic") Signed-off-by: Ranjani Sridharan <ranjani.sridharan(a)linux.intel.com> Reviewed-by: Péter Ujfalusi <peter.ujfalusi(a)linux.intel.com> Reviewed-by: Kai Vehmanen <kai.vehmanen(a)linux.intel.com> Signed-off-by: Peter Ujfalusi <peter.ujfalusi(a)linux.intel.com> --- sound/soc/sof/ipc3-topology.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/sound/soc/sof/ipc3-topology.c b/sound/soc/sof/ipc3-topology.c index 473d416bc910..f449362a2905 100644 --- a/sound/soc/sof/ipc3-topology.c +++ b/sound/soc/sof/ipc3-topology.c @@ -2473,11 +2473,6 @@ static int sof_ipc3_tear_down_all_pipelines(struct snd_sof_dev *sdev, bool verif if (ret < 0) return ret; - /* free all the scheduler widgets now */ - ret = sof_ipc3_free_widgets_in_list(sdev, true, &dyn_widgets, verify); - if (ret < 0) - return ret; - /* * Tear down all pipelines associated with PCMs that did not get suspended * and unset the prepare flag so that they can be set up again during resume. @@ -2493,6 +2488,11 @@ static int sof_ipc3_tear_down_all_pipelines(struct snd_sof_dev *sdev, bool verif } } + /* free all the scheduler widgets now. This will also power down the secondary cores */ + ret = sof_ipc3_free_widgets_in_list(sdev, true, &dyn_widgets, verify); + if (ret < 0) + return ret; + list_for_each_entry(sroute, &sdev->route_list, list) sroute->setup = false; -- 2.51.0

1 month, 4 weeks

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[PATCH 6.1 00/61] 6.1.154-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 6.1.154 release. There are 61 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Wed, 24 Sep 2025 19:23:52 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.1.154-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.1.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 6.1.154-rc1 Herbert Xu <herbert(a)gondor.apana.org.au> crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg David Howells <dhowells(a)redhat.com> crypto: af_alg: Convert af_alg_sendpage() to use MSG_SPLICE_PAGES Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> ASoC: qcom: q6apm-lpass-dais: Fix NULL pointer dereference if source graph failed Srinivas Kandagatla <srinivas.kandagatla(a)linaro.org> ASoC: q6apm-lpass-dai: close graph on prepare errors Srinivas Kandagatla <srinivas.kandagatla(a)linaro.org> ASoC: qcom: q6apm-lpass-dai: close graphs before opening a new one Hans de Goede <hansg(a)kernel.org> net: rfkill: gpio: Fix crash due to dereferencering uninitialized pointer Philipp Zabel <p.zabel(a)pengutronix.de> net: rfkill: gpio: add DT support Matthieu Baerts (NGI0) <matttbe(a)kernel.org> selftests: mptcp: connect: catch IO errors on listen side Matthieu Baerts (NGI0) <matttbe(a)kernel.org> mptcp: propagate shutdown to subflows when possible Mathias Nyman <mathias.nyman(a)linux.intel.com> xhci: dbc: Fix full DbC transfer ring after several reconnects Mathias Nyman <mathias.nyman(a)linux.intel.com> xhci: dbc: decouple endpoint allocation from initialization Johan Hovold <johan(a)kernel.org> phy: ti: omap-usb2: fix device leak at unbind Rob Herring <robh(a)kernel.org> phy: Use device_get_match_data() Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> phy: broadcom: ns-usb3: fix Wvoid-pointer-to-enum-cast warning Matthieu Baerts (NGI0) <matttbe(a)kernel.org> selftests: mptcp: userspace pm: validate deny-join-id0 flag Matthieu Baerts (NGI0) <matttbe(a)kernel.org> mptcp: pm: nl: announce deny-join-id0 flag Stefan Metzmacher <metze(a)samba.org> smb: client: fix smbdirect_recv_io leak in smbd_negotiate() error path Herbert Xu <herbert(a)gondor.apana.org.au> crypto: af_alg - Set merge to zero early in af_alg_sendmsg David Howells <dhowells(a)redhat.com> crypto: af_alg: Indent the loop in af_alg_sendmsg() Qi Xi <xiqi2(a)huawei.com> drm: bridge: cdns-mhdp8546: Fix missing mutex unlock on error path Loic Poulain <loic.poulain(a)oss.qualcomm.com> drm: bridge: anx7625: Fix NULL pointer dereference with early IRQ Colin Ian King <colin.i.king(a)gmail.com> ASoC: SOF: Intel: hda-stream: Fix incorrect variable used in error message Charles Keepax <ckeepax(a)opensource.cirrus.com> ASoC: wm8974: Correct PLL rate rounding Charles Keepax <ckeepax(a)opensource.cirrus.com> ASoC: wm8940: Correct typo in control name Jens Axboe <axboe(a)kernel.dk> io_uring: include dying ring in task_work "should cancel" state Jens Axboe <axboe(a)kernel.dk> io_uring: backport io_should_terminate_tw() Praful Adiga <praful.adiga(a)gmail.com> ALSA: hda/realtek: Fix mute led for HP Laptop 15-dw4xx Matthieu Baerts (NGI0) <matttbe(a)kernel.org> selftests: mptcp: avoid spurious errors on TCP disconnect Håkon Bugge <haakon.bugge(a)oracle.com> rds: ib: Increment i_fastreg_wrs before bailing out Maciej S. Szmigiero <maciej.szmigiero(a)oracle.com> KVM: SVM: Sync TPR from LAPIC into VMCB::V_TPR even if AVIC is active Thomas Fourier <fourier.thomas(a)gmail.com> mmc: mvsdio: Fix dma_unmap_sg() nents value Mohammad Rafi Shaik <mohammad.rafi.shaik(a)oss.qualcomm.com> ASoC: qcom: q6apm-lpass-dais: Fix missing set_fmt DAI op for I2S Mohammad Rafi Shaik <mohammad.rafi.shaik(a)oss.qualcomm.com> ASoC: qcom: audioreach: Fix lpaif_type configuration for the I2S interface Qu Wenruo <wqu(a)suse.com> btrfs: tree-checker: fix the incorrect inode ref size check Eugene Koira <eugkoira(a)amazon.com> iommu/vt-d: Fix __domain_mapping()'s usage of switch_to_super_page() Tao Cui <cuitao(a)kylinos.cn> LoongArch: Check the return value when creating kobj Huacai Chen <chenhuacai(a)kernel.org> LoongArch: Align ACPI structures if ARCH_STRICT_ALIGN enabled H. Nikolaus Schaller <hns(a)goldelico.com> power: supply: bq27xxx: restrict no-battery detection to bq27000 H. Nikolaus Schaller <hns(a)goldelico.com> power: supply: bq27xxx: fix error return in case of no bq27000 hdq battery Nathan Chancellor <nathan(a)kernel.org> nilfs2: fix CFI failure when accessing /sys/fs/nilfs2/features/* Stefan Metzmacher <metze(a)samba.org> ksmbd: smbdirect: verify remaining_data_length respects max_fragmented_recv_size Namjae Jeon <linkinjeon(a)kernel.org> ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer Duoming Zhou <duoming(a)zju.edu.cn> octeontx2-pf: Fix use-after-free bugs in otx2_sync_tstamp() Duoming Zhou <duoming(a)zju.edu.cn> cnic: Fix use-after-free bugs in cnic_delete_task Alexey Nepomnyashih <sdl(a)nppct.ru> net: liquidio: fix overflow in octeon_init_instr_queue() Tariq Toukan <tariqt(a)nvidia.com> Revert "net/mlx5e: Update and set Xon/Xoff upon port speed set" Jakub Kicinski <kuba(a)kernel.org> tls: make sure to abort the stream if headers are bogus Kuniyuki Iwashima <kuniyu(a)google.com> tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect(). Hangbin Liu <liuhangbin(a)gmail.com> bonding: don't set oif to bond dev when getting NS target destination Maciej Fijalkowski <maciej.fijalkowski(a)intel.com> i40e: remove redundant memory barrier when cleaning Tx descs Yeounsu Moon <yyyynoom(a)gmail.com> net: natsemi: fix `rx_dropped` double accounting on `netif_rx()` failure Matthieu Baerts (NGI0) <matttbe(a)kernel.org> mptcp: set remote_deny_join_id0 on SYN recv Jamie Bainbridge <jamie.bainbridge(a)gmail.com> qed: Don't collect too many protection override GRC elements Ioana Ciornei <ioana.ciornei(a)nxp.com> dpaa2-switch: fix buffer pool seeding for control traffic Miaoqian Lin <linmq006(a)gmail.com> um: virtio_uml: Fix use-after-free after put_device in probe Filipe Manana <fdmanana(a)suse.com> btrfs: fix invalid extref key setup when replaying dentry Chen Ridong <chenridong(a)huawei.com> cgroup: split cgroup_destroy_wq into 3 workqueues Geert Uytterhoeven <geert+renesas(a)glider.be> pcmcia: omap_cf: Mark driver struct with __refdata to prevent section mismatch Liao Yuanhong <liaoyuanhong(a)vivo.com> wifi: mac80211: fix incorrect type for ret Lachlan Hodges <lachlan.hodges(a)morsemicro.com> wifi: mac80211: increase scan_ies_len for S1G Takashi Sakamoto <o-takashi(a)sakamocchi.jp> ALSA: firewire-motu: drop EPOLLOUT from poll return values as write is not supported ------------- Diffstat: Makefile | 4 +- arch/loongarch/include/asm/acenv.h | 7 +- arch/loongarch/kernel/env.c | 2 + arch/um/drivers/virtio_uml.c | 6 +- arch/x86/kvm/svm/svm.c | 3 +- crypto/af_alg.c | 112 ++++++++------------- drivers/gpu/drm/bridge/analogix/anx7625.c | 6 +- .../gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 6 +- drivers/iommu/intel/iommu.c | 7 +- drivers/mmc/host/mvsdio.c | 2 +- drivers/net/bonding/bond_main.c | 1 - drivers/net/ethernet/broadcom/cnic.c | 3 +- .../net/ethernet/cavium/liquidio/request_manager.c | 2 +- .../net/ethernet/freescale/dpaa2/dpaa2-switch.c | 2 +- drivers/net/ethernet/intel/i40e/i40e_txrx.c | 3 - .../net/ethernet/marvell/octeontx2/nic/otx2_ptp.c | 2 +- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 2 - drivers/net/ethernet/natsemi/ns83820.c | 13 ++- drivers/net/ethernet/qlogic/qed/qed_debug.c | 7 +- drivers/pcmcia/omap_cf.c | 8 +- drivers/phy/broadcom/phy-bcm-ns-usb3.c | 9 +- drivers/phy/marvell/phy-berlin-usb.c | 7 +- drivers/phy/ralink/phy-ralink-usb.c | 10 +- drivers/phy/rockchip/phy-rockchip-pcie.c | 11 +- drivers/phy/rockchip/phy-rockchip-usb.c | 10 +- drivers/phy/ti/phy-omap-control.c | 9 +- drivers/phy/ti/phy-omap-usb2.c | 24 +++-- drivers/phy/ti/phy-ti-pipe3.c | 14 +-- drivers/power/supply/bq27xxx_battery.c | 4 +- drivers/usb/host/xhci-dbgcap.c | 94 ++++++++++++----- fs/btrfs/tree-checker.c | 4 +- fs/btrfs/tree-log.c | 2 +- fs/nilfs2/sysfs.c | 4 +- fs/nilfs2/sysfs.h | 8 +- fs/smb/client/smbdirect.c | 4 +- fs/smb/server/transport_rdma.c | 26 +++-- include/crypto/if_alg.h | 10 +- include/uapi/linux/mptcp.h | 6 +- io_uring/io_uring.c | 13 ++- io_uring/io_uring.h | 13 +++ io_uring/poll.c | 3 +- io_uring/timeout.c | 2 +- kernel/cgroup/cgroup.c | 43 ++++++-- net/ipv4/tcp.c | 5 + net/mac80211/driver-ops.h | 2 +- net/mac80211/main.c | 7 +- net/mptcp/pm_netlink.c | 7 ++ net/mptcp/protocol.c | 15 +++ net/mptcp/subflow.c | 4 + net/rds/ib_frmr.c | 20 ++-- net/rfkill/rfkill-gpio.c | 22 +++- net/tls/tls.h | 1 + net/tls/tls_strp.c | 14 ++- net/tls/tls_sw.c | 3 +- sound/firewire/motu/motu-hwdep.c | 2 +- sound/pci/hda/patch_realtek.c | 1 + sound/soc/codecs/wm8940.c | 2 +- sound/soc/codecs/wm8974.c | 8 +- sound/soc/qcom/qdsp6/audioreach.c | 1 + sound/soc/qcom/qdsp6/q6apm-lpass-dais.c | 36 +++++-- sound/soc/sof/intel/hda-stream.c | 2 +- tools/testing/selftests/net/mptcp/mptcp_connect.c | 11 +- tools/testing/selftests/net/mptcp/pm_nl_ctl.c | 7 ++ tools/testing/selftests/net/mptcp/userspace_pm.sh | 14 ++- 64 files changed, 440 insertions(+), 272 deletions(-)

1 month, 4 weeks

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[PATCH v2 01/15] serial: sc16is7xx: remove useless enable of enhanced features

by Hugo Villeneuve

From: Hugo Villeneuve <hvilleneuve(a)dimonoff.com> Commit 43c51bb573aa ("sc16is7xx: make sure device is in suspend once probed") permanently enabled access to the enhanced features in sc16is7xx_probe(), and it is never disabled after that. Therefore, remove useless re-enable of enhanced features in sc16is7xx_set_baud(). Fixes: 43c51bb573aa ("sc16is7xx: make sure device is in suspend once probed") Cc: stable(a)vger.kernel.org Signed-off-by: Hugo Villeneuve <hvilleneuve(a)dimonoff.com> --- drivers/tty/serial/sc16is7xx.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c index 1a2c4c14f6aac..c7435595dce13 100644 --- a/drivers/tty/serial/sc16is7xx.c +++ b/drivers/tty/serial/sc16is7xx.c @@ -588,13 +588,6 @@ static int sc16is7xx_set_baud(struct uart_port *port, int baud) div /= prescaler; } - /* Enable enhanced features */ - sc16is7xx_efr_lock(port); - sc16is7xx_port_update(port, SC16IS7XX_EFR_REG, - SC16IS7XX_EFR_ENABLE_BIT, - SC16IS7XX_EFR_ENABLE_BIT); - sc16is7xx_efr_unlock(port); - /* If bit MCR_CLKSEL is set, the divide by 4 prescaler is activated. */ sc16is7xx_port_update(port, SC16IS7XX_MCR_REG, SC16IS7XX_MCR_CLKSEL_BIT, -- 2.39.5

1 month, 4 weeks

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[PATCH 11/14] iommu/omap: fix device leaks on probe_device()

by Johan Hovold

Make sure to drop the reference taken to the iommu platform devices during probe_device() on errors and when the device is later released. Fixes: 9d5018deec86 ("iommu/omap: Add support to program multiple iommus") Fixes: 7d6827748d54 ("iommu/omap: Fix iommu archdata name for DT-based devices") Cc: stable(a)vger.kernel.org # 3.18 Cc: Suman Anna <s-anna(a)ti.com> Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/iommu/omap-iommu.c | 27 +++++++++++++++++++-------- 1 file changed, 19 insertions(+), 8 deletions(-) diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index 6fb93927bdb9..77023d49bd24 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -1636,7 +1636,7 @@ static struct iommu_device *omap_iommu_probe_device(struct device *dev) struct platform_device *pdev; struct omap_iommu *oiommu; struct device_node *np; - int num_iommus, i; + int num_iommus, i, ret; /* * Allocate the per-device iommu structure for DT-based devices. @@ -1663,22 +1663,22 @@ static struct iommu_device *omap_iommu_probe_device(struct device *dev) for (i = 0, tmp = arch_data; i < num_iommus; i++, tmp++) { np = of_parse_phandle(dev->of_node, "iommus", i); if (!np) { - kfree(arch_data); - return ERR_PTR(-EINVAL); + ret = -EINVAL; + goto err_put_iommus; } pdev = of_find_device_by_node(np); if (!pdev) { of_node_put(np); - kfree(arch_data); - return ERR_PTR(-ENODEV); + ret = -ENODEV; + goto err_put_iommus; } oiommu = platform_get_drvdata(pdev); if (!oiommu) { of_node_put(np); - kfree(arch_data); - return ERR_PTR(-EINVAL); + ret = -EINVAL; + goto err_put_iommus; } tmp->iommu_dev = oiommu; @@ -1697,17 +1697,28 @@ static struct iommu_device *omap_iommu_probe_device(struct device *dev) oiommu = arch_data->iommu_dev; return &oiommu->iommu; + +err_put_iommus: + for (tmp = arch_data; tmp->dev; tmp++) + put_device(tmp->dev); + + kfree(arch_data); + + return ERR_PTR(ret); } static void omap_iommu_release_device(struct device *dev) { struct omap_iommu_arch_data *arch_data = dev_iommu_priv_get(dev); + struct omap_iommu_arch_data *tmp; if (!dev->of_node || !arch_data) return; - kfree(arch_data); + for (tmp = arch_data; tmp->dev; tmp++) + put_device(tmp->dev); + kfree(arch_data); } static int omap_iommu_of_xlate(struct device *dev, const struct of_phandle_args *args) -- 2.49.1

1 month, 4 weeks

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Linux 6.16.10

by Greg Kroah-Hartman

I'm announcing the release of the 6.16.10 kernel. All users of the 6.16 kernel series must upgrade. The updated 6.16.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-6.16.y and can be browsed at the normal kernel.org git web browser: https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary thanks, greg k-h ------------ Documentation/admin-guide/laptops/lg-laptop.rst | 4 Makefile | 2 arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts | 6 arch/arm/boot/dts/marvell/kirkwood-openrd-client.dts | 2 arch/arm64/boot/dts/freescale/imx8mp.dtsi | 4 arch/arm64/boot/dts/marvell/cn9130-cf.dtsi | 7 arch/arm64/boot/dts/marvell/cn9131-cf-solidwan.dts | 6 arch/arm64/boot/dts/marvell/cn9132-clearfog.dts | 22 arch/arm64/boot/dts/marvell/cn9132-sr-cex7.dtsi | 8 arch/arm64/boot/dts/rockchip/rk3588s-orangepi-5.dtsi | 3 arch/riscv/include/asm/pgtable.h | 17 arch/x86/Kconfig | 2 arch/x86/include/asm/topology.h | 10 arch/x86/kernel/cpu/topology.c | 13 drivers/cpufreq/cpufreq.c | 20 drivers/firewire/core-cdev.c | 2 drivers/gpio/gpio-regmap.c | 2 drivers/gpio/gpiolib-acpi-quirks.c | 14 drivers/gpio/gpiolib.c | 21 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 44 drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 3 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 12 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 7 drivers/gpu/drm/amd/display/dc/dc.h | 1 drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c | 6 drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c | 6 drivers/gpu/drm/ast/ast_dp.c | 2 drivers/gpu/drm/gma500/oaktrail_hdmi.c | 2 drivers/gpu/drm/i915/display/intel_ddi.c | 5 drivers/gpu/drm/panfrost/panfrost_drv.c | 61 - drivers/gpu/drm/panthor/panthor_sched.c | 8 drivers/gpu/drm/xe/abi/guc_actions_abi.h | 5 drivers/gpu/drm/xe/abi/guc_klvs_abi.h | 40 drivers/gpu/drm/xe/xe_bo_evict.c | 4 drivers/gpu/drm/xe/xe_configfs.c | 2 drivers/gpu/drm/xe/xe_device_sysfs.c | 2 drivers/gpu/drm/xe/xe_gt.c | 3 drivers/gpu/drm/xe/xe_guc.c | 62 - drivers/gpu/drm/xe/xe_guc.h | 1 drivers/gpu/drm/xe/xe_guc_submit.c | 87 - drivers/gpu/drm/xe/xe_guc_submit.h | 2 drivers/gpu/drm/xe/xe_uc.c | 4 drivers/hid/amd-sfh-hid/amd_sfh_client.c | 12 drivers/hid/amd-sfh-hid/amd_sfh_common.h | 3 drivers/hid/amd-sfh-hid/amd_sfh_pcie.c | 4 drivers/hid/hid-asus.c | 3 drivers/hid/hid-cp2112.c | 10 drivers/hid/hid-multitouch.c | 45 drivers/hid/intel-thc-hid/intel-quickspi/pci-quickspi.c | 2 drivers/hid/intel-thc-hid/intel-quickspi/quickspi-dev.h | 2 drivers/i2c/busses/i2c-designware-platdrv.c | 7 drivers/infiniband/hw/mlx5/devx.c | 1 drivers/iommu/iommufd/eventq.c | 9 drivers/iommu/iommufd/main.c | 35 drivers/mmc/host/sdhci-cadence.c | 11 drivers/net/can/rcar/rcar_can.c | 8 drivers/net/can/spi/hi311x.c | 1 drivers/net/can/sun4i_can.c | 1 drivers/net/can/usb/etas_es58x/es58x_core.c | 3 drivers/net/can/usb/mcba_usb.c | 1 drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 drivers/net/dsa/lantiq_gswip.c | 21 drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 2 drivers/net/ethernet/freescale/fec_main.c | 4 drivers/net/ethernet/intel/i40e/i40e.h | 3 drivers/net/ethernet/intel/i40e/i40e_main.c | 26 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 110 + drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h | 3 drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 3 drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c | 2 drivers/net/ethernet/mellanox/mlx5/core/en_stats.c | 1 drivers/net/ethernet/mellanox/mlx5/core/fs_core.c | 2 drivers/net/ethernet/mellanox/mlx5/core/fs_core.h | 1 drivers/net/ethernet/mellanox/mlx5/core/fs_counters.c | 25 drivers/net/ethernet/mellanox/mlx5/core/steering/hws/action.c | 7 drivers/net/ethernet/mellanox/mlx5/core/steering/hws/fs_hws.c | 18 drivers/net/ethernet/mellanox/mlx5/core/steering/hws/fs_hws_pools.c | 8 drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws.h | 7 drivers/net/phy/bcm-phy-ptp.c | 6 drivers/net/phy/sfp.c | 24 drivers/net/tun.c | 3 drivers/net/wireless/intel/iwlwifi/pcie/tx.c | 3 drivers/net/wireless/virtual/virt_wifi.c | 4 drivers/pinctrl/mediatek/pinctrl-airoha.c | 31 drivers/platform/x86/lg-laptop.c | 34 drivers/platform/x86/oxpec.c | 7 drivers/spi/spi-cadence-quadspi.c | 90 + drivers/ufs/core/ufs-mcq.c | 4 drivers/usb/core/quirks.c | 2 drivers/vhost/net.c | 33 drivers/video/fbdev/core/fbcon.c | 13 fs/afs/server.c | 3 fs/btrfs/volumes.c | 5 fs/hugetlbfs/inode.c | 10 fs/netfs/buffered_read.c | 10 fs/netfs/direct_read.c | 7 fs/netfs/direct_write.c | 6 fs/netfs/internal.h | 1 fs/netfs/objects.c | 30 fs/netfs/read_pgpriv2.c | 2 fs/netfs/read_single.c | 2 fs/netfs/write_issue.c | 3 fs/nfs/file.c | 33 fs/nfs/inode.c | 9 fs/nfs/internal.h | 2 fs/nfs/nfs42proc.c | 33 fs/nfs/nfstrace.h | 1 fs/proc/task_mmu.c | 3 fs/smb/client/smb2inode.c | 2 fs/smb/server/transport_rdma.c | 22 include/crypto/if_alg.h | 2 include/linux/firmware/imx/sm.h | 47 include/linux/mlx5/fs.h | 2 include/net/bluetooth/hci_core.h | 21 kernel/bpf/core.c | 5 kernel/bpf/verifier.c | 6 kernel/fork.c | 2 kernel/futex/requeue.c | 6 kernel/sched/ext_idle.c | 52 kernel/sched/ext_idle.h | 7 kernel/trace/fgraph.c | 12 kernel/trace/fprobe.c | 7 kernel/trace/trace_dynevent.c | 4 kernel/trace/trace_osnoise.c | 3 kernel/vhost_task.c | 3 mm/damon/sysfs.c | 4 mm/kmsan/core.c | 10 mm/kmsan/kmsan_test.c | 16 net/bluetooth/hci_event.c | 30 net/bluetooth/hci_sync.c | 7 net/bluetooth/mgmt.c | 259 +++- net/bluetooth/mgmt_util.c | 46 net/bluetooth/mgmt_util.h | 3 net/core/skbuff.c | 2 net/ipv4/nexthop.c | 7 net/smc/smc_loopback.c | 14 net/xfrm/xfrm_device.c | 2 net/xfrm/xfrm_state.c | 3 sound/pci/hda/patch_realtek.c | 11 sound/soc/intel/boards/sof_es8336.c | 10 sound/soc/intel/boards/sof_rt5682.c | 7 sound/soc/intel/common/soc-acpi-intel-ptl-match.c | 32 sound/usb/mixer_quirks.c | 571 +++++++--- sound/usb/quirks.c | 24 sound/usb/usbaudio.h | 4 tools/testing/selftests/bpf/prog_tests/free_timer.c | 4 tools/testing/selftests/bpf/prog_tests/timer.c | 4 tools/testing/selftests/bpf/prog_tests/timer_crash.c | 4 tools/testing/selftests/bpf/prog_tests/timer_lockup.c | 4 tools/testing/selftests/bpf/prog_tests/timer_mim.c | 4 tools/testing/selftests/filesystems/mount-notify/mount-notify_test.c | 17 tools/testing/selftests/filesystems/mount-notify/mount-notify_test_ns.c | 18 tools/testing/selftests/net/fib_nexthops.sh | 12 153 files changed, 1832 insertions(+), 851 deletions(-) Adrián Larumbe (1): drm/panthor: Defer scheduler entitiy destruction to queue release Akinobu Mita (1): mm/damon/sysfs: do not ignore callback's return value in damon_sysfs_damon_call() Aleksander Jan Bajkowski (1): net: sfp: add quirk for FLYPRO copper SFP+ module Alexander Popov (1): x86/Kconfig: Reenable PTDUMP on i386 Alexandre Ghiti (1): riscv: Use an atomic xchg in pudp_huge_get_and_clear() Alok Tiwari (2): scsi: ufs: mcq: Fix memory allocation checks for SQE and CQE bnxt_en: correct offset handling for IPv6 destination address Amit Chaudhari (1): HID: asus: add support for missing PX series fn keys Andrea Righi (2): sched_ext: idle: Make local functions static in ext_idle.c sched_ext: idle: Handle migration-disabled tasks in BPF code Antheas Kapenekakis (1): platform/x86: oxpec: Add support for OneXPlayer X1 Mini Pro (Strix Point) Balamurugan C (3): ASoC: Intel: soc-acpi: Add entry for sof_es8336 in PTL match table. ASoC: Intel: soc-acpi: Add entry for HDMI_In capture support in PTL match table ASoC: Intel: sof_rt5682: Add HDMI-In capture with rt5682 support for PTL. Basavaraj Natikar (1): HID: amd_sfh: Add sync across amd sfh work functions Benoît Monin (1): mmc: sdhci-cadence: add Mobileye eyeQ support Carolina Jubran (1): net/mlx5e: Fix missing FEC RS stats for RS_544_514_INTERLEAVED_QUAD Chen Ni (1): ALSA: usb-audio: Convert comma to semicolon Chris Morgan (1): net: sfp: add quirk for Potron SFP+ XGSPON ONU Stick Christian Loehle (1): cpufreq: Initialize cpufreq-based invariance before subsys Christian Marangi (2): pinctrl: airoha: fix wrong PHY LED mux value for LED1 GPIO46 pinctrl: airoha: fix wrong MDIO function bitmaks Cristian Ciocaltea (8): ALSA: usb-audio: Fix code alignment in mixer_quirks ALSA: usb-audio: Fix whitespace & blank line issues in mixer_quirks ALSA: usb-audio: Fix block comments in mixer_quirks ALSA: usb-audio: Drop unnecessary parentheses in mixer_quirks ALSA: usb-audio: Avoid multiple assignments in mixer_quirks ALSA: usb-audio: Simplify NULL comparison in mixer_quirks ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5 Cryolitia PukNgae (1): ALSA: usb-audio: move mixer_quirks' min_mute into common quirk Dan Carpenter (1): octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() Daniel Lee (1): platform/x86: lg-laptop: Fix WMAB call in fan_mode_store() Eric Biggers (2): crypto: af_alg - Fix incorrect boolean values in af_alg_ctx kmsan: fix out-of-bounds access to shadow memory Eric Huang (1): drm/amdkfd: fix p2p links bug in topology Geert Uytterhoeven (1): can: rcar_can: rcar_can_resume(): fix s2ram with PSCI Greg Kroah-Hartman (1): Linux 6.16.10 Hans de Goede (1): gpiolib: Extend software-node support to support secondary software-nodes Heikki Krogerus (1): i2c: designware: Add quirk for Intel Xe Ido Schimmel (2): nexthop: Forbid FDB status change while nexthop is in a group selftests: fib_nexthops: Fix creation of non-FDB nexthops Ioana Ciornei (1): gpio: regmap: fix memory leak of gpio_regmap structure Jacob Keller (2): broadcom: fix support for PTP_PEROUT_DUTY_CYCLE broadcom: fix support for PTP_EXTTS_REQUEST2 ioctl Jakub Acs (1): fs/proc/task_mmu: check p->vec_buf for NULL James Guan (1): wifi: virt_wifi: Fix page fault on connect Jason Baron (1): net: allow alloc_skb_with_frags() to use MAX_SKB_FRAGS Jason Gunthorpe (1): iommufd: Fix race during abort for file descriptors Jason Wang (1): vhost-net: flush batched before enabling notifications Jiayi Li (1): usb: core: Add 0x prefix to quirks debug output Jihed Chaibi (1): ARM: dts: kirkwood: Fix sound DAI cells for OpenRD clients Jimmy Hon (1): arm64: dts: rockchip: Fix the headphone detection on the orangepi 5 Jinjiang Tu (1): mm/hugetlb: fix folio is still mapped when deleted Jiri Olsa (1): bpf: Check the helper function is valid in get_helper_proto Johannes Berg (2): wifi: iwlwifi: fix byte count table for old devices wifi: iwlwifi: pcie: fix byte count table for some devices Josua Mayer (3): arm64: dts: marvell: cn913x-solidrun: fix sata ports status arm64: dts: marvell: cn9132-clearfog: disable eMMC high-speed modes arm64: dts: marvell: cn9132-clearfog: fix multi-lane pci x2 and x4 ports Kerem Karabay (4): HID: multitouch: Get the contact ID from HID_DG_TRANSDUCER_INDEX fields in case of Apple Touch Bar HID: multitouch: support getting the tip state from HID_DG_TOUCH fields in Apple Touch Bar HID: multitouch: take cls->maxcontacts into account for Apple Touch Bar even without a HID_DG_CONTACTMAX field HID: multitouch: specify that Apple Touch Bar is direct Khairul Anuar Romli (2): spi: cadence-quadspi: Implement refcount to handle unbind during busy spi: cadence-qspi: defer runtime support on socfpga if reset bit is enabled Leon Hwang (2): bpf: Reject bpf_timer for PREEMPT_RT selftests/bpf: Skip timer cases when bpf_timer is not supported Louis-Alexis Eyraud (3): drm/panfrost: Drop duplicated Mediatek supplies arrays drm/panfrost: Commonize Mediatek power domain array definitions drm/panfrost: Add support for Mali on the MT8370 SoC Lucas De Marchi (1): drm/xe: Fix build with CONFIG_MODULES=n Luiz Augusto von Dentz (4): Bluetooth: hci_sync: Fix hci_resume_advertising_sync Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync Bluetooth: MGMT: Fix possible UAFs Lukasz Czapnik (8): i40e: add validation for ring_len param i40e: fix idx validation in i40e_validate_queue_map i40e: fix idx validation in config queues msg i40e: fix input validation logic for action_meta i40e: fix validation of VF state in get resources i40e: add max boundary check for VF filters i40e: add mask to apply valid bits for itr_idx i40e: improve VF MAC filters accounting Marc Kleine-Budde (1): net: fec: rename struct fec_devinfo fec_imx6x_info -> fec_imx6sx_info Mario Limonciello (AMD) (1): gpiolib: acpi: Add quirk for ASUS ProArt PX13 Mark Harmstone (1): btrfs: don't allow adding block device of less than 1 MB Masami Hiramatsu (Google) (3): tracing: dynevent: Add a missing lockdown check on dynevent tracing: fgraph: Protect return handler from recursion loop tracing: fprobe: Fix to remove recorded module addresses from filter Matthew Schwartz (1): drm/amd/display: Only restore backlight after amdgpu_dm_init or dm_resume Max Kellermann (1): netfs: fix reference leak Melissa Wen (1): drm/amd/display: remove output_tf_change flag Michael S. Tsirkin (1): Revert "vhost/net: Defer TX queue re-enable until after sendmsg" Michal Wajdeczko (1): drm/xe/vf: Don't expose sysfs attributes not applicable for VFs Moshe Shemesh (1): net/mlx5: fs, fix UAF in flow counter release Nirmoy Das (1): drm/ast: Use msleep instead of mdelay for edid read Nobuhiro Iwamatsu (1): ARM: dts: socfpga: sodia: Fix mdio bus probe and PHY address Or Har-Toov (1): IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions Peng Fan (4): firmware: imx: Add stub functions for SCMI MISC API firmware: imx: Add stub functions for SCMI LMM API firmware: imx: Add stub functions for SCMI CPU API arm64: dts: imx8mp: Correct thermal sensor index Petr Malat (1): ethernet: rvu-af: Remove slash from the driver name Sabrina Dubroca (2): xfrm: xfrm_alloc_spi shouldn't use 0 as SPI xfrm: fix offloading of cross-family tunnels Samasth Norway Ananda (1): fbcon: fix integer overflow in fbcon_do_set_font Sang-Heon Jeon (1): smb: client: fix wrong index reference in smb2_compound_op() Sasha Levin (2): Revert "drm/xe/guc: Set RCS/CCS yield policy" Revert "drm/xe/guc: Enable extended CAT error reporting" Sebastian Andrzej Siewior (3): vhost: Take a reference on the task in struct vhost_task. futex: Prevent use-after-free during requeue-PI futex: Use correct exit on failure from futex_hash_allocate_default() Sidraya Jayagond (1): net/smc: fix warning in smc_rx_splice() when calling get_page() Stefan Binding (1): ALSA: hda/realtek: Add support for ASUS NUC using CS35L41 HDA Stefan Metzmacher (2): smb: server: don't use delayed_work for post_recv_credits_work smb: server: use disable_work_sync in transport_rdma.c Stéphane Grosjean (1): can: peak_usb: fix shift-out-of-bounds issue Suraj Kandpal (1): drm/i915/ddi: Guard reg_val against a INVALID_TRANSCODER Sébastien Szymanski (1): HID: cp2112: fix setter callbacks return value Takashi Iwai (1): ALSA: usb-audio: Fix build with CONFIG_INPUT=n Takashi Sakamoto (1): firewire: core: fix overlooked update of subsystem ABI version Thomas Gleixner (1): x86/topology: Implement topology_is_core_online() to address SMT regression Thomas Hellström (1): drm/xe: Don't copy pinned kernel bos twice on suspend Thomas Zimmermann (1): fbcon: Fix OOB access in font allocation Trond Myklebust (2): NFS: Protect against 'eof page pollution' NFSv4.2: Protect copy offload and clone against 'eof page pollution' Vincent Mailhol (4): can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow can: hi311x: populate ndo_change_mtu() to prevent buffer overflow can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow Vlad Dogaru (1): net/mlx5: HWS, remove unused create_dest_array parameter Vladimir Oltean (2): net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup() net: dsa: lantiq_gswip: suppress -EINVAL errors for bridge FDB entries added to the CPU port Wang Liang (2): net: tun: Update napi->skb after XDP process tracing/osnoise: Fix slab-out-of-bounds in _parse_integer_limit() Xing Guo (1): selftests/fs/mount-notify: Fix compilation failure. Xinpeng Sun (1): HID: intel-thc-hid: intel-quickspi: Add WCL Device IDs Yevgeny Kliteynik (1): net/mlx5: HWS, ignore flow level for multi-dest table Yifan Zhang (1): amd/amdkfd: correct mem limit calculation for small APUs Zabelin Nikita (1): drm/gma500: Fix null dereference in hdmi teardown Zhen Ni (1): afs: Fix potential null pointer dereference in afs_put_server noble.yang (1): ALSA: usb-audio: Add DSD support for Comtrue USB Audio device qaqland (1): ALSA: usb-audio: Add mute TLV for playback volumes on more devices

1 month, 4 weeks

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Linux 6.12.50

by Greg Kroah-Hartman

I'm announcing the release of the 6.12.50 kernel. All users of the 6.12 kernel series must upgrade. The updated 6.12.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-6.12.y and can be browsed at the normal kernel.org git web browser: https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary thanks, greg k-h ------------ Documentation/admin-guide/laptops/lg-laptop.rst | 4 Makefile | 2 arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts | 6 arch/arm/boot/dts/marvell/kirkwood-openrd-client.dts | 2 arch/arm64/boot/dts/freescale/imx8mp.dtsi | 4 arch/arm64/boot/dts/marvell/cn9132-clearfog.dts | 16 arch/arm64/boot/dts/marvell/cn9132-sr-cex7.dtsi | 8 drivers/cpufreq/cpufreq.c | 20 drivers/firewire/core-cdev.c | 2 drivers/gpio/gpiolib.c | 21 drivers/gpu/drm/ast/ast_dp.c | 2 drivers/gpu/drm/gma500/oaktrail_hdmi.c | 2 drivers/gpu/drm/i915/display/intel_backlight.c | 5 drivers/gpu/drm/panthor/panthor_sched.c | 8 drivers/hid/amd-sfh-hid/amd_sfh_client.c | 12 drivers/hid/amd-sfh-hid/amd_sfh_common.h | 3 drivers/hid/amd-sfh-hid/amd_sfh_pcie.c | 4 drivers/hid/hid-asus.c | 3 drivers/i2c/busses/i2c-designware-platdrv.c | 7 drivers/infiniband/hw/mlx5/devx.c | 1 drivers/iommu/iommufd/fault.c | 4 drivers/iommu/iommufd/main.c | 34 drivers/mmc/host/sdhci-cadence.c | 11 drivers/net/can/rcar/rcar_can.c | 8 drivers/net/can/spi/hi311x.c | 1 drivers/net/can/sun4i_can.c | 1 drivers/net/can/usb/etas_es58x/es58x_core.c | 3 drivers/net/can/usb/mcba_usb.c | 1 drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 drivers/net/dsa/lantiq_gswip.c | 21 drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 2 drivers/net/ethernet/freescale/fec_main.c | 4 drivers/net/ethernet/intel/i40e/i40e.h | 3 drivers/net/ethernet/intel/i40e/i40e_main.c | 26 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 110 +- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h | 3 drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 3 drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c | 2 drivers/net/phy/sfp.c | 24 drivers/net/tun.c | 3 drivers/net/wireless/virtual/virt_wifi.c | 4 drivers/platform/x86/lg-laptop.c | 34 drivers/ufs/core/ufs-mcq.c | 4 drivers/usb/core/quirks.c | 2 drivers/usb/host/xhci-dbgcap.c | 2 drivers/usb/host/xhci-mem.c | 50 - drivers/usb/host/xhci.c | 2 drivers/usb/host/xhci.h | 6 drivers/video/fbdev/core/fbcon.c | 13 fs/afs/server.c | 3 fs/btrfs/volumes.c | 5 fs/hugetlbfs/inode.c | 10 fs/proc/task_mmu.c | 3 fs/smb/client/smb2inode.c | 2 fs/smb/server/transport_rdma.c | 22 include/crypto/if_alg.h | 2 include/linux/firmware/imx/sm.h | 12 include/linux/swap.h | 10 include/net/bluetooth/hci_core.h | 21 kernel/bpf/core.c | 5 kernel/bpf/verifier.c | 6 kernel/futex/requeue.c | 6 kernel/trace/trace_dynevent.c | 4 kernel/vhost_task.c | 3 mm/gup.c | 15 mm/kmsan/core.c | 10 mm/kmsan/kmsan_test.c | 16 mm/mlock.c | 6 mm/swap.c | 51 - net/bluetooth/hci_event.c | 26 net/bluetooth/hci_sync.c | 7 net/core/skbuff.c | 2 net/ipv4/nexthop.c | 7 net/smc/smc_loopback.c | 14 net/xfrm/xfrm_state.c | 3 sound/pci/hda/patch_realtek.c | 11 sound/usb/mixer_quirks.c | 545 +++++++++---- sound/usb/quirks.c | 24 sound/usb/usbaudio.h | 4 tools/testing/selftests/net/fib_nexthops.sh | 12 80 files changed, 999 insertions(+), 383 deletions(-) Adrián Larumbe (1): drm/panthor: Defer scheduler entitiy destruction to queue release Aleksander Jan Bajkowski (1): net: sfp: add quirk for FLYPRO copper SFP+ module Alok Tiwari (2): scsi: ufs: mcq: Fix memory allocation checks for SQE and CQE bnxt_en: correct offset handling for IPv6 destination address Amit Chaudhari (1): HID: asus: add support for missing PX series fn keys Basavaraj Natikar (1): HID: amd_sfh: Add sync across amd sfh work functions Benoît Monin (1): mmc: sdhci-cadence: add Mobileye eyeQ support Chen Ni (1): ALSA: usb-audio: Convert comma to semicolon Chris Morgan (1): net: sfp: add quirk for Potron SFP+ XGSPON ONU Stick Christian Loehle (1): cpufreq: Initialize cpufreq-based invariance before subsys Cristian Ciocaltea (7): ALSA: usb-audio: Fix code alignment in mixer_quirks ALSA: usb-audio: Fix block comments in mixer_quirks ALSA: usb-audio: Drop unnecessary parentheses in mixer_quirks ALSA: usb-audio: Avoid multiple assignments in mixer_quirks ALSA: usb-audio: Simplify NULL comparison in mixer_quirks ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5 Cryolitia PukNgae (1): ALSA: usb-audio: move mixer_quirks' min_mute into common quirk Dan Carpenter (1): octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() Daniel Lee (1): platform/x86: lg-laptop: Fix WMAB call in fan_mode_store() Eric Biggers (2): crypto: af_alg - Fix incorrect boolean values in af_alg_ctx kmsan: fix out-of-bounds access to shadow memory Geert Uytterhoeven (1): can: rcar_can: rcar_can_resume(): fix s2ram with PSCI Greg Kroah-Hartman (1): Linux 6.12.50 Guenter Roeck (1): drm/i915/backlight: Return immediately when scale() finds invalid parameters Hans de Goede (1): gpiolib: Extend software-node support to support secondary software-nodes Heikki Krogerus (1): i2c: designware: Add quirk for Intel Xe Hugh Dickins (3): mm/gup: local lru_add_drain() to avoid lru_add_drain_all() mm: revert "mm/gup: clear the LRU flag of a page before adding to LRU batch" mm: folio_may_be_lru_cached() unless folio_test_large() Ido Schimmel (2): nexthop: Forbid FDB status change while nexthop is in a group selftests: fib_nexthops: Fix creation of non-FDB nexthops Jakub Acs (1): fs/proc/task_mmu: check p->vec_buf for NULL James Guan (1): wifi: virt_wifi: Fix page fault on connect Jason Baron (1): net: allow alloc_skb_with_frags() to use MAX_SKB_FRAGS Jason Gunthorpe (1): iommufd: Fix race during abort for file descriptors Jiayi Li (1): usb: core: Add 0x prefix to quirks debug output Jihed Chaibi (1): ARM: dts: kirkwood: Fix sound DAI cells for OpenRD clients Jinjiang Tu (1): mm/hugetlb: fix folio is still mapped when deleted Jiri Olsa (1): bpf: Check the helper function is valid in get_helper_proto Josua Mayer (2): arm64: dts: marvell: cn9132-clearfog: disable eMMC high-speed modes arm64: dts: marvell: cn9132-clearfog: fix multi-lane pci x2 and x4 ports Leon Hwang (1): bpf: Reject bpf_timer for PREEMPT_RT Luiz Augusto von Dentz (2): Bluetooth: hci_sync: Fix hci_resume_advertising_sync Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync Lukasz Czapnik (8): i40e: add validation for ring_len param i40e: fix idx validation in i40e_validate_queue_map i40e: fix idx validation in config queues msg i40e: fix input validation logic for action_meta i40e: fix validation of VF state in get resources i40e: add max boundary check for VF filters i40e: add mask to apply valid bits for itr_idx i40e: improve VF MAC filters accounting Marc Kleine-Budde (1): net: fec: rename struct fec_devinfo fec_imx6x_info -> fec_imx6sx_info Mark Harmstone (1): btrfs: don't allow adding block device of less than 1 MB Masami Hiramatsu (Google) (1): tracing: dynevent: Add a missing lockdown check on dynevent Niklas Neronin (1): Revert "usb: xhci: remove option to change a default ring's TRB cycle bit" Nirmoy Das (1): drm/ast: Use msleep instead of mdelay for edid read Nobuhiro Iwamatsu (1): ARM: dts: socfpga: sodia: Fix mdio bus probe and PHY address Or Har-Toov (1): IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions Peng Fan (2): firmware: imx: Add stub functions for SCMI MISC API arm64: dts: imx8mp: Correct thermal sensor index Petr Malat (1): ethernet: rvu-af: Remove slash from the driver name Sabrina Dubroca (1): xfrm: xfrm_alloc_spi shouldn't use 0 as SPI Samasth Norway Ananda (1): fbcon: fix integer overflow in fbcon_do_set_font Sang-Heon Jeon (1): smb: client: fix wrong index reference in smb2_compound_op() Sebastian Andrzej Siewior (2): vhost: Take a reference on the task in struct vhost_task. futex: Prevent use-after-free during requeue-PI Sidraya Jayagond (1): net/smc: fix warning in smc_rx_splice() when calling get_page() Stefan Binding (1): ALSA: hda/realtek: Add support for ASUS NUC using CS35L41 HDA Stefan Metzmacher (2): smb: server: don't use delayed_work for post_recv_credits_work smb: server: use disable_work_sync in transport_rdma.c Stéphane Grosjean (1): can: peak_usb: fix shift-out-of-bounds issue Takashi Iwai (1): ALSA: usb-audio: Fix build with CONFIG_INPUT=n Takashi Sakamoto (1): firewire: core: fix overlooked update of subsystem ABI version Thomas Zimmermann (1): fbcon: Fix OOB access in font allocation Vincent Mailhol (4): can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow can: hi311x: populate ndo_change_mtu() to prevent buffer overflow can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow Vladimir Oltean (2): net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup() net: dsa: lantiq_gswip: suppress -EINVAL errors for bridge FDB entries added to the CPU port Wang Liang (1): net: tun: Update napi->skb after XDP process Zabelin Nikita (1): drm/gma500: Fix null dereference in hdmi teardown Zhen Ni (1): afs: Fix potential null pointer dereference in afs_put_server noble.yang (1): ALSA: usb-audio: Add DSD support for Comtrue USB Audio device qaqland (1): ALSA: usb-audio: Add mute TLV for playback volumes on more devices

1 month, 4 weeks

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Linux 6.6.109

by Greg Kroah-Hartman

I'm announcing the release of the 6.6.109 kernel. All users of the 6.6 kernel series must upgrade. The updated 6.6.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-6.6.y and can be browsed at the normal kernel.org git web browser: https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary thanks, greg k-h ------------ Makefile | 2 arch/arm/boot/dts/intel/socfpga/socfpga_cyclone5_sodia.dts | 6 arch/arm/boot/dts/marvell/kirkwood-openrd-client.dts | 2 arch/arm/mach-bcm/Kconfig | 1 arch/arm64/boot/dts/freescale/imx8mp.dtsi | 4 arch/s390/kernel/perf_cpum_cf.c | 4 arch/um/drivers/mconsole_user.c | 2 drivers/block/loop.c | 40 + drivers/cpufreq/cpufreq.c | 20 drivers/edac/skx_common.h | 1 drivers/firewire/core-cdev.c | 2 drivers/gpio/gpiolib.c | 19 drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c | 2 drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppevvmath.h | 14 drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 2 drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c | 3 drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c | 3 drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c | 2 drivers/gpu/drm/ast/ast_dp.c | 2 drivers/gpu/drm/gma500/oaktrail_hdmi.c | 2 drivers/gpu/drm/i915/display/intel_backlight.c | 5 drivers/gpu/drm/radeon/evergreen_cs.c | 2 drivers/hid/hid-asus.c | 3 drivers/hwmon/adt7475.c | 24 drivers/i2c/busses/i2c-designware-platdrv.c | 7 drivers/infiniband/hw/mlx5/devx.c | 1 drivers/input/touchscreen/cyttsp4_core.c | 2 drivers/irqchip/irq-sun6i-r.c | 2 drivers/media/dvb-frontends/stv0367_priv.h | 3 drivers/mmc/host/sdhci-cadence.c | 11 drivers/net/can/rcar/rcar_can.c | 8 drivers/net/can/spi/hi311x.c | 1 drivers/net/can/sun4i_can.c | 1 drivers/net/can/usb/etas_es58x/es58x_core.c | 3 drivers/net/can/usb/etas_es58x/es58x_devlink.c | 2 drivers/net/can/usb/mcba_usb.c | 1 drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 drivers/net/dsa/lantiq_gswip.c | 37 - drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 2 drivers/net/ethernet/intel/i40e/i40e.h | 4 drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 25 drivers/net/ethernet/intel/i40e/i40e_main.c | 26 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 110 ++- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h | 3 drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 3 drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c | 2 drivers/net/fjes/fjes_main.c | 4 drivers/net/wireless/virtual/virt_wifi.c | 4 drivers/nfc/pn544/i2c.c | 2 drivers/platform/x86/sony-laptop.c | 1 drivers/scsi/isci/init.c | 6 drivers/staging/media/atomisp/pci/hive_isp_css_include/math_support.h | 5 drivers/ufs/core/ufs-mcq.c | 4 drivers/usb/core/quirks.c | 2 drivers/video/fbdev/core/fbcon.c | 13 fs/afs/server.c | 3 fs/btrfs/tree-checker.c | 2 fs/hugetlbfs/inode.c | 10 fs/smb/client/smb2inode.c | 2 fs/smb/server/transport_rdma.c | 18 include/crypto/if_alg.h | 2 include/linux/compiler.h | 9 include/linux/minmax.h | 220 ++++--- include/linux/mm.h | 55 + include/linux/swap.h | 10 include/net/bluetooth/hci_core.h | 21 kernel/bpf/verifier.c | 4 kernel/futex/requeue.c | 6 kernel/trace/preemptirq_delay_test.c | 2 kernel/trace/trace_dynevent.c | 4 kernel/vhost_task.c | 3 lib/btree.c | 1 lib/decompress_unlzma.c | 2 lib/vsprintf.c | 2 mm/gup.c | 28 mm/kmsan/core.c | 10 mm/kmsan/kmsan_test.c | 16 mm/migrate_device.c | 42 - mm/mlock.c | 6 mm/swap.c | 4 mm/zsmalloc.c | 2 net/bluetooth/hci_event.c | 26 net/bluetooth/hci_sync.c | 7 net/core/skbuff.c | 2 net/ipv4/nexthop.c | 7 net/xfrm/xfrm_state.c | 3 sound/usb/mixer_quirks.c | 295 +++++++++- sound/usb/quirks.c | 24 sound/usb/usbaudio.h | 4 tools/testing/selftests/mm/mremap_test.c | 2 tools/testing/selftests/net/fib_nexthops.sh | 12 tools/testing/selftests/seccomp/seccomp_bpf.c | 2 93 files changed, 984 insertions(+), 350 deletions(-) Alok Tiwari (2): scsi: ufs: mcq: Fix memory allocation checks for SQE and CQE bnxt_en: correct offset handling for IPv6 destination address Amit Chaudhari (1): HID: asus: add support for missing PX series fn keys Benoît Monin (1): mmc: sdhci-cadence: add Mobileye eyeQ support Chen Ni (1): ALSA: usb-audio: Convert comma to semicolon Christian Loehle (1): cpufreq: Initialize cpufreq-based invariance before subsys Cristian Ciocaltea (6): ALSA: usb-audio: Fix block comments in mixer_quirks ALSA: usb-audio: Drop unnecessary parentheses in mixer_quirks ALSA: usb-audio: Avoid multiple assignments in mixer_quirks ALSA: usb-audio: Simplify NULL comparison in mixer_quirks ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5 Cryolitia PukNgae (1): ALSA: usb-audio: move mixer_quirks' min_mute into common quirk Dan Carpenter (1): octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() David Hildenbrand (2): mm/gup: revert "mm: gup: fix infinite loop within __get_longterm_locked" mm/migrate_device: don't add folio to be freed to LRU in migrate_device_finalize() David Laight (7): minmax.h: add whitespace around operators and after commas minmax.h: update some comments minmax.h: reduce the #define expansion of min(), max() and clamp() minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp() minmax.h: move all the clamp() definitions after the min/max() ones minmax.h: simplify the variants of clamp() minmax.h: remove some #defines that are only expanded once Eric Biggers (2): crypto: af_alg - Fix incorrect boolean values in af_alg_ctx kmsan: fix out-of-bounds access to shadow memory Florian Fainelli (1): ARM: bcm: Select ARM_GIC_V3 for ARCH_BRCMSTB Geert Uytterhoeven (1): can: rcar_can: rcar_can_resume(): fix s2ram with PSCI Greg Kroah-Hartman (1): Linux 6.6.109 Guenter Roeck (1): drm/i915/backlight: Return immediately when scale() finds invalid parameters Hans de Goede (1): gpiolib: Extend software-node support to support secondary software-nodes Heikki Krogerus (1): i2c: designware: Add quirk for Intel Xe Hugh Dickins (3): mm/gup: check ref_count instead of lru before migration mm/gup: local lru_add_drain() to avoid lru_add_drain_all() mm: folio_may_be_lru_cached() unless folio_test_large() Ido Schimmel (2): nexthop: Forbid FDB status change while nexthop is in a group selftests: fib_nexthops: Fix creation of non-FDB nexthops James Guan (1): wifi: virt_wifi: Fix page fault on connect Jan Kara (1): loop: Avoid updating block size under exclusive owner Jason Baron (1): net: allow alloc_skb_with_frags() to use MAX_SKB_FRAGS Jiayi Li (1): usb: core: Add 0x prefix to quirks debug output Jihed Chaibi (1): ARM: dts: kirkwood: Fix sound DAI cells for OpenRD clients Jinjiang Tu (1): mm/hugetlb: fix folio is still mapped when deleted Justin Bronder (1): i40e: increase max descriptors for XL710 Kefeng Wang (1): mm: migrate_device: use more folio in migrate_device_finalize() Leon Hwang (1): bpf: Reject bpf_timer for PREEMPT_RT Linus Torvalds (5): minmax: make generic MIN() and MAX() macros available everywhere minmax: simplify min()/max()/clamp() implementation minmax: don't use max() in situations that want a C constant expression minmax: improve macro expansion and type checking minmax: fix up min3() and max3() too Luiz Augusto von Dentz (2): Bluetooth: hci_sync: Fix hci_resume_advertising_sync Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync Lukasz Czapnik (8): i40e: fix idx validation in i40e_validate_queue_map i40e: fix idx validation in config queues msg i40e: fix input validation logic for action_meta i40e: fix validation of VF state in get resources i40e: add max boundary check for VF filters i40e: add mask to apply valid bits for itr_idx i40e: improve VF MAC filters accounting i40e: add validation for ring_len param Martin Schiller (1): net: dsa: lantiq_gswip: do also enable or disable cpu port Masami Hiramatsu (Google) (1): tracing: dynevent: Add a missing lockdown check on dynevent Nathan Chancellor (1): s390/cpum_cf: Fix uninitialized warning after backport of ce971233242b Nirmoy Das (1): drm/ast: Use msleep instead of mdelay for edid read Nobuhiro Iwamatsu (1): ARM: dts: socfpga: sodia: Fix mdio bus probe and PHY address Or Har-Toov (1): IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions Peng Fan (1): arm64: dts: imx8mp: Correct thermal sensor index Petr Malat (1): ethernet: rvu-af: Remove slash from the driver name Sabrina Dubroca (1): xfrm: xfrm_alloc_spi shouldn't use 0 as SPI Samasth Norway Ananda (1): fbcon: fix integer overflow in fbcon_do_set_font Sang-Heon Jeon (1): smb: client: fix wrong index reference in smb2_compound_op() Sebastian Andrzej Siewior (2): vhost: Take a reference on the task in struct vhost_task. futex: Prevent use-after-free during requeue-PI Shivank Garg (1): mm: add folio_expected_ref_count() for reference count calculation Stefan Metzmacher (1): smb: server: don't use delayed_work for post_recv_credits_work Stéphane Grosjean (1): can: peak_usb: fix shift-out-of-bounds issue Takashi Iwai (1): ALSA: usb-audio: Fix build with CONFIG_INPUT=n Takashi Sakamoto (1): firewire: core: fix overlooked update of subsystem ABI version Thomas Zimmermann (1): fbcon: Fix OOB access in font allocation Vincent Mailhol (4): can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow can: hi311x: populate ndo_change_mtu() to prevent buffer overflow can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow Vladimir Oltean (2): net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup() net: dsa: lantiq_gswip: suppress -EINVAL errors for bridge FDB entries added to the CPU port Zabelin Nikita (1): drm/gma500: Fix null dereference in hdmi teardown Zhen Ni (1): afs: Fix potential null pointer dereference in afs_put_server noble.yang (1): ALSA: usb-audio: Add DSD support for Comtrue USB Audio device qaqland (1): ALSA: usb-audio: Add mute TLV for playback volumes on more devices

1 month, 4 weeks

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Linux 6.1.155

by Greg Kroah-Hartman

I'm announcing the release of the 6.1.155 kernel. All users of the 6.1 kernel series must upgrade. The updated 6.1.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-6.1.y and can be browsed at the normal kernel.org git web browser: https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary thanks, greg k-h ------------ Makefile | 2 arch/arm/mm/pageattr.c | 6 arch/arm64/boot/dts/freescale/imx8mp.dtsi | 4 arch/s390/kernel/perf_cpum_cf.c | 4 arch/um/drivers/mconsole_user.c | 2 arch/x86/mm/pgtable.c | 2 drivers/cpufreq/cpufreq.c | 20 drivers/edac/sb_edac.c | 4 drivers/edac/skx_common.h | 1 drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c | 2 drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppevvmath.h | 14 drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 2 drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c | 3 drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c | 3 drivers/gpu/drm/arm/display/include/malidp_utils.h | 2 drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c | 24 drivers/gpu/drm/ast/ast_dp.c | 2 drivers/gpu/drm/drm_color_mgmt.c | 2 drivers/gpu/drm/gma500/oaktrail_hdmi.c | 2 drivers/gpu/drm/i915/display/intel_backlight.c | 5 drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 6 drivers/gpu/drm/radeon/evergreen_cs.c | 2 drivers/hwmon/adt7475.c | 24 drivers/infiniband/hw/mlx5/devx.c | 1 drivers/md/dm-integrity.c | 2 drivers/media/dvb-frontends/stv0367_priv.h | 3 drivers/net/can/rcar/rcar_can.c | 8 drivers/net/can/spi/hi311x.c | 1 drivers/net/can/sun4i_can.c | 1 drivers/net/can/usb/etas_es58x/es581_4.c | 4 drivers/net/can/usb/etas_es58x/es58x_core.c | 7 drivers/net/can/usb/etas_es58x/es58x_core.h | 8 drivers/net/can/usb/etas_es58x/es58x_fd.c | 4 drivers/net/can/usb/mcba_usb.c | 1 drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 drivers/net/dsa/lantiq_gswip.c | 37 - drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 2 drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c | 18 drivers/net/ethernet/intel/i40e/i40e.h | 4 drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 25 drivers/net/ethernet/intel/i40e/i40e_main.c | 26 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 110 ++- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h | 3 drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 3 drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c | 2 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 drivers/net/fjes/fjes_main.c | 4 drivers/nfc/pn544/i2c.c | 2 drivers/platform/x86/sony-laptop.c | 1 drivers/scsi/isci/init.c | 6 drivers/staging/media/atomisp/pci/hive_isp_css_include/math_support.h | 5 drivers/usb/core/quirks.c | 2 drivers/video/fbdev/core/fbcon.c | 13 drivers/virt/acrn/ioreq.c | 4 fs/afs/server.c | 3 fs/btrfs/misc.h | 2 fs/ext2/balloc.c | 2 fs/ext4/ext4.h | 2 fs/hugetlbfs/inode.c | 10 fs/smb/server/transport_rdma.c | 18 fs/ufs/util.h | 6 include/crypto/if_alg.h | 2 include/linux/minmax.h | 122 +++- include/linux/mm.h | 54 + include/linux/pageblock-flags.h | 2 include/linux/swap.h | 10 include/net/bluetooth/hci_core.h | 21 kernel/bpf/verifier.c | 4 kernel/futex/requeue.c | 6 kernel/trace/preemptirq_delay_test.c | 2 kernel/trace/trace_dynevent.c | 4 lib/btree.c | 1 lib/decompress_unlzma.c | 2 lib/logic_pio.c | 3 mm/gup.c | 28 mm/kmsan/core.c | 10 mm/kmsan/kmsan_test.c | 16 mm/migrate_device.c | 42 - mm/mlock.c | 2 mm/swap.c | 4 mm/zsmalloc.c | 1 net/bluetooth/hci_event.c | 26 net/bluetooth/hci_sync.c | 7 net/ipv4/nexthop.c | 7 net/ipv4/proc.c | 2 net/ipv6/proc.c | 2 net/netfilter/nf_nat_core.c | 6 net/tipc/core.h | 2 net/tipc/link.c | 10 sound/usb/mixer_quirks.c | 295 +++++++++- sound/usb/quirks.c | 24 sound/usb/usbaudio.h | 4 tools/testing/selftests/bpf/progs/get_branch_snapshot.c | 4 tools/testing/selftests/net/fib_nexthops.sh | 12 tools/testing/selftests/seccomp/seccomp_bpf.c | 2 tools/testing/selftests/vm/mremap_test.c | 2 97 files changed, 910 insertions(+), 325 deletions(-) Alok Tiwari (1): bnxt_en: correct offset handling for IPv6 destination address Andy Shevchenko (1): minmax: deduplicate __unconst_integer_typeof() Chen Ni (1): ALSA: usb-audio: Convert comma to semicolon Christian Loehle (1): cpufreq: Initialize cpufreq-based invariance before subsys Cristian Ciocaltea (6): ALSA: usb-audio: Fix block comments in mixer_quirks ALSA: usb-audio: Drop unnecessary parentheses in mixer_quirks ALSA: usb-audio: Avoid multiple assignments in mixer_quirks ALSA: usb-audio: Simplify NULL comparison in mixer_quirks ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5 Cryolitia PukNgae (1): ALSA: usb-audio: move mixer_quirks' min_mute into common quirk Dan Carpenter (1): octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() David Hildenbrand (2): mm/gup: revert "mm: gup: fix infinite loop within __get_longterm_locked" mm/migrate_device: don't add folio to be freed to LRU in migrate_device_finalize() David Laight (1): minmax: fix indentation of __cmp_once() and __clamp_once() Eric Biggers (2): crypto: af_alg - Fix incorrect boolean values in af_alg_ctx kmsan: fix out-of-bounds access to shadow memory Geert Uytterhoeven (1): can: rcar_can: rcar_can_resume(): fix s2ram with PSCI Greg Kroah-Hartman (1): Linux 6.1.155 Guenter Roeck (1): drm/i915/backlight: Return immediately when scale() finds invalid parameters Herve Codina (1): minmax: Introduce {min,max}_array() Hugh Dickins (3): mm/gup: check ref_count instead of lru before migration mm/gup: local lru_add_drain() to avoid lru_add_drain_all() mm: folio_may_be_lru_cached() unless folio_test_large() Ido Schimmel (2): nexthop: Forbid FDB status change while nexthop is in a group selftests: fib_nexthops: Fix creation of non-FDB nexthops Jiayi Li (1): usb: core: Add 0x prefix to quirks debug output Jinjiang Tu (1): mm/hugetlb: fix folio is still mapped when deleted Justin Bronder (1): i40e: increase max descriptors for XL710 Kefeng Wang (1): mm: migrate_device: use more folio in migrate_device_finalize() Leon Hwang (1): bpf: Reject bpf_timer for PREEMPT_RT Linus Torvalds (4): minmax: avoid overly complicated constant expressions in VM code minmax: make generic MIN() and MAX() macros available everywhere minmax: add a few more MIN_T/MAX_T users minmax: simplify and clarify min_t()/max_t() implementation Luiz Augusto von Dentz (2): Bluetooth: hci_sync: Fix hci_resume_advertising_sync Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync Lukasz Czapnik (8): i40e: fix idx validation in i40e_validate_queue_map i40e: fix input validation logic for action_meta i40e: add max boundary check for VF filters i40e: add mask to apply valid bits for itr_idx i40e: improve VF MAC filters accounting i40e: fix validation of VF state in get resources i40e: fix idx validation in config queues msg i40e: add validation for ring_len param Martin Schiller (1): net: dsa: lantiq_gswip: do also enable or disable cpu port Masami Hiramatsu (Google) (1): tracing: dynevent: Add a missing lockdown check on dynevent Matthew Wilcox (Oracle) (1): minmax: add in_range() macro Nathan Chancellor (1): s390/cpum_cf: Fix uninitialized warning after backport of ce971233242b Nirmoy Das (1): drm/ast: Use msleep instead of mdelay for edid read Or Har-Toov (1): IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions Peng Fan (1): arm64: dts: imx8mp: Correct thermal sensor index Petr Malat (1): ethernet: rvu-af: Remove slash from the driver name Samasth Norway Ananda (1): fbcon: fix integer overflow in fbcon_do_set_font Sebastian Andrzej Siewior (1): futex: Prevent use-after-free during requeue-PI Shivank Garg (1): mm: add folio_expected_ref_count() for reference count calculation Stefan Metzmacher (1): smb: server: don't use delayed_work for post_recv_credits_work Stéphane Grosjean (1): can: peak_usb: fix shift-out-of-bounds issue Takashi Iwai (1): ALSA: usb-audio: Fix build with CONFIG_INPUT=n Thomas Zimmermann (1): fbcon: Fix OOB access in font allocation Vincent Mailhol (5): can: etas_es58x: sort the includes by alphabetic order can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow can: hi311x: populate ndo_change_mtu() to prevent buffer overflow can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow Vladimir Oltean (2): net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup() net: dsa: lantiq_gswip: suppress -EINVAL errors for bridge FDB entries added to the CPU port Zabelin Nikita (1): drm/gma500: Fix null dereference in hdmi teardown Zhen Ni (1): afs: Fix potential null pointer dereference in afs_put_server noble.yang (1): ALSA: usb-audio: Add DSD support for Comtrue USB Audio device qaqland (1): ALSA: usb-audio: Add mute TLV for playback volumes on more devices

1 month, 4 weeks

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Linux 5.15.194

by Greg Kroah-Hartman

I'm announcing the release of the 5.15.194 kernel. All users of the 5.15 kernel series must upgrade. The updated 5.15.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-5.15.y and can be browsed at the normal kernel.org git web browser: https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary thanks, greg k-h ------------ Documentation/devicetree/bindings/serial/brcm,bcm7271-uart.yaml | 2 Makefile | 2 arch/arm64/boot/dts/freescale/imx8mp.dtsi | 4 arch/um/drivers/virtio_uml.c | 6 arch/x86/kvm/cpuid.c | 31 - arch/x86/kvm/svm/svm.c | 3 crypto/af_alg.c | 7 drivers/cpufreq/cpufreq.c | 20 drivers/dma/qcom/bam_dma.c | 8 drivers/dma/ti/edma.c | 4 drivers/edac/altera_edac.c | 1 drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 2 drivers/gpu/drm/bridge/analogix/anx7625.c | 6 drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 6 drivers/gpu/drm/gma500/oaktrail_hdmi.c | 2 drivers/gpu/drm/i915/display/intel_backlight.c | 5 drivers/gpu/drm/i915/display/intel_display_power.c | 6 drivers/infiniband/hw/mlx5/devx.c | 1 drivers/input/serio/i8042-acpipnpio.h | 14 drivers/media/i2c/imx214.c | 27 drivers/media/platform/mtk-vcodec/venc/venc_h264_if.c | 6 drivers/mmc/host/mvsdio.c | 2 drivers/mtd/nand/raw/atmel/nand-controller.c | 18 drivers/mtd/nand/raw/stm32_fmc2_nand.c | 48 - drivers/net/can/dev/bittiming.c | 15 drivers/net/can/dev/dev.c | 50 + drivers/net/can/rcar/rcar_can.c | 8 drivers/net/can/spi/hi311x.c | 1 drivers/net/can/sun4i_can.c | 1 drivers/net/can/usb/etas_es58x/es581_4.c | 9 drivers/net/can/usb/etas_es58x/es58x_core.c | 16 drivers/net/can/usb/etas_es58x/es58x_core.h | 8 drivers/net/can/usb/etas_es58x/es58x_fd.c | 16 drivers/net/can/usb/mcba_usb.c | 1 drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 drivers/net/can/xilinx_can.c | 16 drivers/net/dsa/lantiq_gswip.c | 37 - drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 2 drivers/net/ethernet/broadcom/cnic.c | 3 drivers/net/ethernet/cavium/liquidio/request_manager.c | 2 drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c | 2 drivers/net/ethernet/freescale/fec_main.c | 3 drivers/net/ethernet/intel/i40e/i40e.h | 1 drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 25 drivers/net/ethernet/intel/i40e/i40e_main.c | 10 drivers/net/ethernet/intel/i40e/i40e_txrx.c | 3 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 45 + drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h | 3 drivers/net/ethernet/intel/igb/igb_ethtool.c | 5 drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 3 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 2 drivers/net/ethernet/natsemi/ns83820.c | 13 drivers/net/ethernet/qlogic/qed/qed_debug.c | 7 drivers/pcmcia/omap_cf.c | 8 drivers/phy/broadcom/phy-bcm-ns-usb3.c | 9 drivers/phy/marvell/phy-berlin-usb.c | 7 drivers/phy/ralink/phy-ralink-usb.c | 10 drivers/phy/rockchip/phy-rockchip-pcie.c | 11 drivers/phy/rockchip/phy-rockchip-usb.c | 10 drivers/phy/tegra/xusb-tegra210.c | 6 drivers/phy/ti/phy-omap-control.c | 9 drivers/phy/ti/phy-omap-usb2.c | 24 drivers/phy/ti/phy-ti-pipe3.c | 27 drivers/power/supply/bq27xxx_battery.c | 4 drivers/regulator/sy7636a-regulator.c | 7 drivers/soc/qcom/mdt_loader.c | 12 drivers/tty/hvc/hvc_console.c | 6 drivers/tty/serial/sc16is7xx.c | 14 drivers/usb/core/quirks.c | 2 drivers/usb/gadget/udc/dummy_hcd.c | 25 drivers/usb/host/xhci-dbgcap.c | 94 ++- drivers/usb/serial/option.c | 17 drivers/video/fbdev/core/fbcon.c | 13 drivers/video/fbdev/core/fbmem.c | 12 fs/btrfs/tree-checker.c | 4 fs/fuse/file.c | 5 fs/hugetlbfs/inode.c | 14 fs/ksmbd/transport_rdma.c | 17 fs/nfs/client.c | 2 fs/nfs/flexfilelayout/flexfilelayout.c | 21 fs/nfs/nfs4proc.c | 6 fs/nilfs2/sysfs.c | 4 fs/nilfs2/sysfs.h | 8 fs/ocfs2/extent_map.c | 10 fs/xfs/xfs_fsops.c | 4 include/crypto/if_alg.h | 10 include/linux/can/bittiming.h | 69 +- include/linux/can/dev.h | 8 include/linux/compiler-clang.h | 29 - include/linux/interrupt.h | 53 + include/linux/pgalloc.h | 29 + include/linux/pgtable.h | 13 include/net/sock.h | 40 + include/uapi/linux/can/netlink.h | 2 kernel/bpf/verifier.c | 4 kernel/cgroup/cgroup.c | 43 + kernel/irq/manage.c | 8 kernel/time/hrtimer.c | 50 - kernel/trace/trace.c | 4 kernel/trace/trace_dynevent.c | 4 kernel/trace/trace_events_synth.c | 2 lib/test_kasan.c | 1 mm/kasan/init.c | 12 mm/khugepaged.c | 2 mm/memory-failure.c | 7 mm/migrate.c | 12 mm/rmap.c | 2 mm/sparse-vmemmap.c | 6 net/can/j1939/bus.c | 5 net/can/j1939/socket.c | 3 net/ceph/messenger.c | 7 net/core/sock.c | 5 net/hsr/hsr_device.c | 163 +++++ net/hsr/hsr_main.c | 4 net/hsr/hsr_main.h | 4 net/hsr/hsr_slave.c | 18 net/ipv4/ip_tunnel_core.c | 6 net/ipv4/nexthop.c | 7 net/ipv4/tcp.c | 5 net/ipv4/tcp_bpf.c | 5 net/mac80211/driver-ops.h | 2 net/mptcp/protocol.c | 15 net/mptcp/sockopt.c | 11 net/mptcp/subflow.c | 3 net/rds/ib_frmr.c | 20 net/rfkill/rfkill-gpio.c | 22 net/unix/af_unix.c | 15 sound/firewire/motu/motu-hwdep.c | 2 sound/soc/codecs/wm8940.c | 2 sound/soc/codecs/wm8974.c | 8 sound/soc/sof/intel/hda-stream.c | 2 sound/usb/mixer_quirks.c | 285 +++++++++- tools/testing/selftests/net/fib_nexthops.sh | 12 133 files changed, 1468 insertions(+), 535 deletions(-) Alan Stern (1): USB: gadget: dummy-hcd: Fix locking bug in RT-enabled kernels Alex Deucher (1): drm/amdgpu: fix a memory leak in fence cleanup when unloading Alexander Dahl (1): mtd: nand: raw: atmel: Fix comment in timings preparation Alexander Sverdlin (1): mtd: nand: raw: atmel: Respect tAR, tCLR in read setup timing Alexey Nepomnyashih (1): net: liquidio: fix overflow in octeon_init_instr_queue() Alok Tiwari (1): bnxt_en: correct offset handling for IPv6 destination address Anders Roxell (1): dmaengine: ti: edma: Fix memory allocation size for queue_priority_map Andreas Kemnade (1): regulator: sy7636a: fix lifecycle of power good gpio André Apitzsch (1): media: i2c: imx214: Fix link frequency validation Anssi Hannula (1): can: xilinx_can: xcan_write_frame(): fix use-after-free of transmitted SKB Antoine Tenart (1): tunnels: reset the GSO metadata before reusing the skb Arnd Bergmann (1): media: mtk-vcodec: venc: avoid -Wenum-compare-conditional warning Bjorn Andersson (1): soc: qcom: mdt_loader: Deal with zero e_shentsize Boris Ostrovsky (1): KVM: SVM: Return TSA_SQ_NO and TSA_L1_NO bits in __do_cpuid_func() Borislav Petkov (AMD) (1): KVM: SVM: Set synthesized TSA CPUID flags Brett A C Sheffield (1): Revert "fbdev: Disable sysfb device registration when removing conflicting FBs" Charles Keepax (2): ASoC: wm8940: Correct typo in control name ASoC: wm8974: Correct PLL rate rounding Chen Ni (1): ALSA: usb-audio: Convert comma to semicolon Chen Ridong (1): cgroup: split cgroup_destroy_wq into 3 workqueues Christian Loehle (1): cpufreq: Initialize cpufreq-based invariance before subsys Christoffer Sandberg (1): Input: i8042 - add TUXEDO InfinityBook Pro Gen10 AMD to i8042 quirk table Christophe Kerello (2): mtd: rawnand: stm32_fmc2: fix ECC overwrite mtd: rawnand: stm32_fmc2: avoid overlapping mappings on ECC buffer Colin Ian King (1): ASoC: SOF: Intel: hda-stream: Fix incorrect variable used in error message Cristian Ciocaltea (6): ALSA: usb-audio: Fix block comments in mixer_quirks ALSA: usb-audio: Drop unnecessary parentheses in mixer_quirks ALSA: usb-audio: Avoid multiple assignments in mixer_quirks ALSA: usb-audio: Simplify NULL comparison in mixer_quirks ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5 David Hildenbrand (2): mm/rmap: reject hugetlb folios in folio_make_device_exclusive() mm/migrate_device: don't add folio to be freed to LRU in migrate_device_finalize() Duoming Zhou (1): cnic: Fix use-after-free bugs in cnic_delete_task Eric Biggers (1): crypto: af_alg - Fix incorrect boolean values in af_alg_ctx Eric Sandeen (1): xfs: short circuit xfs_growfs_data_private() if delta is zero Fabian Vogt (1): tty: hvc_console: Call hvc_kick in hvc_write unconditionally Fabio Porcedda (2): USB: serial: option: add Telit Cinterion FN990A w/audio compositions USB: serial: option: add Telit Cinterion LE910C4-WWX new compositions Geert Uytterhoeven (2): pcmcia: omap_cf: Mark driver struct with __refdata to prevent section mismatch can: rcar_can: rcar_can_resume(): fix s2ram with PSCI Greg Kroah-Hartman (1): Linux 5.15.194 Guenter Roeck (1): drm/i915/backlight: Return immediately when scale() finds invalid parameters H. Nikolaus Schaller (2): power: supply: bq27xxx: fix error return in case of no bq27000 hdq battery power: supply: bq27xxx: restrict no-battery detection to bq27000 Hangbin Liu (2): hsr: use rtnl lock when iterating over ports hsr: use hsr_for_each_port_rtnl in hsr_port_get_hsr Hans de Goede (1): net: rfkill: gpio: Fix crash due to dereferencering uninitialized pointer Harry Yoo (1): mm: introduce and use {pgd,p4d}_populate_kernel() Herbert Xu (1): crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg Hugo Villeneuve (1): serial: sc16is7xx: fix bug in flow control levels init Håkon Bugge (1): rds: ib: Increment i_fastreg_wrs before bailing out Ido Schimmel (2): nexthop: Forbid FDB status change while nexthop is in a group selftests: fib_nexthops: Fix creation of non-FDB nexthops Ilya Dryomov (1): libceph: fix invalid accesses to ceph_connection_v1_info Ioana Ciornei (1): dpaa2-switch: fix buffer pool seeding for control traffic Jack Wang (1): mtd: rawnand: stm32_fmc2: Fix dma_map_sg error check Jakob Koschel (1): usb: gadget: dummy_hcd: remove usage of list iterator past the loop body Jamie Bainbridge (1): qed: Don't collect too many protection override GRC elements Jani Nikula (1): drm/i915/power: fix size for for_each_set_bit() in abox iteration Jiapeng Chong (2): hrtimer: Remove unused function hrtimer: Rename __hrtimer_hres_active() to hrtimer_hres_active() Jiayi Li (1): usb: core: Add 0x prefix to quirks debug output Jinjiang Tu (1): mm/hugetlb: fix folio is still mapped when deleted Johan Hovold (3): phy: tegra: xusb: fix device and OF node leak at probe phy: ti-pipe3: fix device leak at unbind phy: ti: omap-usb2: fix device leak at unbind Jonathan Curley (1): NFSv4/flexfiles: Fix layout merge mirror check. Justin Bronder (1): i40e: increase max descriptors for XL710 Kim Phillips (1): KVM: x86: Move open-coded CPUID leaf 0x80000021 EAX bit propagation code Kohei Enju (1): igb: fix link test skipping when interface is admin down Krister Johansen (1): mptcp: sockopt: make sync_socket_options propagate SOCK_KEEPOPEN Krzysztof Kozlowski (2): dt-bindings: serial: brcm,bcm7271-uart: Constrain clocks phy: broadcom: ns-usb3: fix Wvoid-pointer-to-enum-cast warning Kuniyuki Iwashima (4): net: Fix null-ptr-deref by sock_lock_init_class_and_name() and rmmod. tcp_bpf: Call sk_msg_free() when tcp_bpf_send_verdict() fails to allocate psock->cork. tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect(). af_unix: Don't leave consecutive consumed OOB skbs. Leon Hwang (1): bpf: Reject bpf_timer for PREEMPT_RT Liao Yuanhong (1): wifi: mac80211: fix incorrect type for ret Loic Poulain (1): drm: bridge: anx7625: Fix NULL pointer dereference with early IRQ Lukasz Czapnik (7): i40e: fix idx validation in i40e_validate_queue_map i40e: fix input validation logic for action_meta i40e: add max boundary check for VF filters i40e: add mask to apply valid bits for itr_idx i40e: fix validation of VF state in get resources i40e: fix idx validation in config queues msg i40e: add validation for ring_len param Luo Gengkun (1): tracing: Fix tracing_marker may trigger page fault during preempt_disable Maciej Fijalkowski (1): i40e: remove redundant memory barrier when cleaning Tx descs Maciej S. Szmigiero (1): KVM: SVM: Sync TPR from LAPIC into VMCB::V_TPR even if AVIC is active Mark Tinguely (1): ocfs2: fix recursive semaphore deadlock in fiemap call Martin Schiller (1): net: dsa: lantiq_gswip: do also enable or disable cpu port Masami Hiramatsu (Google) (1): tracing: dynevent: Add a missing lockdown check on dynevent Mathias Nyman (2): xhci: dbc: decouple endpoint allocation from initialization xhci: dbc: Fix full DbC transfer ring after several reconnects Matthieu Baerts (NGI0) (2): mptcp: set remote_deny_join_id0 on SYN recv mptcp: propagate shutdown to subflows when possible Miaohe Lin (1): mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory Miaoqian Lin (1): um: virtio_uml: Fix use-after-free after put_device in probe Michal Schmidt (1): i40e: fix IRQ freeing in i40e_vsi_request_irq_msix error path Miklos Szeredi (2): fuse: check if copy_file_range() returns larger than requested size fuse: prevent overflow in copy_file_range return value Murali Karicheri (2): net: hsr: Add support for MC filtering at the slave device net: hsr: Add VLAN CTAG filter support Namjae Jeon (1): ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer Nathan Chancellor (2): compiler-clang.h: define __SANITIZE_*__ macros only when undefined nilfs2: fix CFI failure when accessing /sys/fs/nilfs2/features/* Nitesh Narayan Lal (1): i40e: Use irq_update_affinity_hint() Or Har-Toov (1): IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions Peng Fan (1): arm64: dts: imx8mp: Correct thermal sensor index Petr Malat (1): ethernet: rvu-af: Remove slash from the driver name Philipp Zabel (1): net: rfkill: gpio: add DT support Qi Xi (1): drm: bridge: cdns-mhdp8546: Fix missing mutex unlock on error path Qu Wenruo (1): btrfs: tree-checker: fix the incorrect inode ref size check Ravi Gunasekaran (2): net: hsr: Disable promiscuous mode in offload mode net: hsr: hsr_slave: Fix the promiscuous mode in offload mode Rob Herring (1): phy: Use device_get_match_data() Salah Triki (1): EDAC/altera: Delete an inappropriate dma_free_coherent() call Samasth Norway Ananda (1): fbcon: fix integer overflow in fbcon_do_set_font Stefan Wahren (1): net: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable() Stephan Gerhold (1): dmaengine: qcom: bam_dma: Fix DT error handling for num-channels/ees Steven Rostedt (1): tracing: Do not add length to print format in synthetic events Stéphane Grosjean (1): can: peak_usb: fix shift-out-of-bounds issue Takashi Iwai (1): ALSA: usb-audio: Fix build with CONFIG_INPUT=n Takashi Sakamoto (1): ALSA: firewire-motu: drop EPOLLOUT from poll return values as write is not supported Tariq Toukan (1): Revert "net/mlx5e: Update and set Xon/Xoff upon port speed set" Tetsuo Handa (2): can: j1939: j1939_sk_bind(): call j1939_priv_put() immediately when j1939_local_ecu_get() failed can: j1939: j1939_local_ecu_get(): undo increment when j1939_local_ecu_get() fails Thomas Fourier (1): mmc: mvsdio: Fix dma_unmap_sg() nents value Thomas Gleixner (1): genirq: Provide new interfaces for affinity hints Thomas Zimmermann (1): fbcon: Fix OOB access in font allocation Tigran Mkrtchyan (1): flexfiles/pNFS: fix NULL checks on result of ff_layout_choose_ds_for_read Trond Myklebust (3): NFSv4: Don't clear capabilities that won't be reset NFSv4: Clear the NFS_CAP_FS_LOCATIONS flag if it is not set NFSv4: Clear the NFS_CAP_XATTR flag if not supported by the server Vincent Mailhol (10): can: bittiming: allow TDC{V,O} to be zero and add can_tdc_const::tdc{v,o,f}_min can: bittiming: replace CAN units with the generic ones from linux/units.h can: dev: add generic function can_ethtool_op_get_ts_info_hwts() can: dev: add generic function can_eth_ioctl_hwts() can: etas_es58x: advertise timestamping capabilities and add ioctl support can: etas_es58x: sort the includes by alphabetic order can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow can: hi311x: populate ndo_change_mtu() to prevent buffer overflow can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow Vladimir Oltean (2): net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup() net: dsa: lantiq_gswip: suppress -EINVAL errors for bridge FDB entries added to the CPU port Wei Yang (1): mm/khugepaged: fix the address passed to notifier on testing young Xiongfeng Wang (1): hrtimers: Unconditionally update target CPU base after offline timer migration Yeoreum Yun (1): kunit: kasan_test: disable fortify string checker on kasan_strings() test Yeounsu Moon (1): net: natsemi: fix `rx_dropped` double accounting on `netif_rx()` failure Zabelin Nikita (1): drm/gma500: Fix null dereference in hdmi teardown

1 month, 4 weeks

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Linux 5.10.245

by Greg Kroah-Hartman

I'm announcing the release of the 5.10.245 kernel. All users of the 5.10 kernel series must upgrade. The updated 5.10.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-5.10.y and can be browsed at the normal kernel.org git web browser: https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary thanks, greg k-h ------------ Makefile | 2 arch/arm64/boot/dts/freescale/imx8mp.dtsi | 4 arch/um/drivers/virtio_uml.c | 6 arch/x86/kvm/svm/svm.c | 3 crypto/af_alg.c | 7 drivers/cpufreq/cpufreq.c | 20 - drivers/dma/qcom/bam_dma.c | 8 drivers/dma/ti/edma.c | 4 drivers/edac/altera_edac.c | 1 drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 6 drivers/gpu/drm/gma500/oaktrail_hdmi.c | 2 drivers/gpu/drm/i915/display/intel_display_power.c | 6 drivers/infiniband/hw/mlx5/devx.c | 1 drivers/input/serio/i8042-acpipnpio.h | 14 drivers/media/i2c/imx214.c | 27 + drivers/media/platform/mtk-vcodec/venc/venc_h264_if.c | 6 drivers/mmc/host/mvsdio.c | 2 drivers/mtd/mtdpstore.c | 3 drivers/mtd/nand/raw/atmel/nand-controller.c | 18 - drivers/mtd/nand/raw/stm32_fmc2_nand.c | 48 +- drivers/net/can/rcar/rcar_can.c | 8 drivers/net/can/spi/hi311x.c | 1 drivers/net/can/sun4i_can.c | 1 drivers/net/can/usb/mcba_usb.c | 1 drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 2 drivers/net/ethernet/broadcom/cnic.c | 3 drivers/net/ethernet/cavium/liquidio/request_manager.c | 2 drivers/net/ethernet/freescale/fec_main.c | 3 drivers/net/ethernet/intel/i40e/i40e.h | 1 drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 25 + drivers/net/ethernet/intel/i40e/i40e_main.c | 10 drivers/net/ethernet/intel/i40e/i40e_txrx.c | 3 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 45 ++ drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h | 3 drivers/net/ethernet/intel/igb/igb_ethtool.c | 5 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 2 drivers/net/ethernet/natsemi/ns83820.c | 13 drivers/net/ethernet/qlogic/qed/qed_debug.c | 7 drivers/pcmcia/omap_cf.c | 8 drivers/phy/broadcom/phy-bcm-cygnus-pcie.c | 4 drivers/phy/broadcom/phy-bcm-kona-usb2.c | 4 drivers/phy/broadcom/phy-bcm-ns-usb2.c | 4 drivers/phy/broadcom/phy-bcm-ns-usb3.c | 168 ---------- drivers/phy/broadcom/phy-bcm-ns2-usbdrd.c | 13 drivers/phy/broadcom/phy-bcm-sr-pcie.c | 5 drivers/phy/broadcom/phy-bcm-sr-usb.c | 4 drivers/phy/broadcom/phy-brcm-sata.c | 8 drivers/phy/marvell/phy-berlin-usb.c | 7 drivers/phy/ralink/phy-ralink-usb.c | 10 drivers/phy/rockchip/phy-rockchip-pcie.c | 11 drivers/phy/rockchip/phy-rockchip-usb.c | 10 drivers/phy/ti/phy-omap-control.c | 26 - drivers/phy/ti/phy-omap-usb2.c | 28 + drivers/phy/ti/phy-ti-pipe3.c | 42 +- drivers/power/supply/bq27xxx_battery.c | 4 drivers/soc/qcom/mdt_loader.c | 12 drivers/tty/hvc/hvc_console.c | 6 drivers/tty/serial/sc16is7xx.c | 14 drivers/usb/core/quirks.c | 2 drivers/usb/gadget/udc/dummy_hcd.c | 25 - drivers/usb/host/xhci-dbgcap.c | 94 +++-- drivers/usb/serial/option.c | 17 + drivers/video/fbdev/core/fbcon.c | 13 fs/btrfs/tree-checker.c | 4 fs/fuse/file.c | 5 fs/hugetlbfs/inode.c | 14 fs/nfs/client.c | 2 fs/nfs/flexfilelayout/flexfilelayout.c | 21 - fs/nfs/nfs4proc.c | 1 fs/nilfs2/sysfs.c | 4 fs/nilfs2/sysfs.h | 8 fs/ocfs2/extent_map.c | 10 include/crypto/if_alg.h | 10 include/linux/compiler-clang.h | 42 +- include/linux/compiler-gcc.h | 4 include/linux/interrupt.h | 72 ++-- include/linux/overflow.h | 208 ++---------- include/net/nexthop.h | 3 include/net/sock.h | 40 ++ include/uapi/linux/rtnetlink.h | 6 kernel/cgroup/cgroup.c | 43 ++ kernel/irq/manage.c | 111 ++++++ kernel/trace/trace.c | 4 kernel/trace/trace_dynevent.c | 4 mm/khugepaged.c | 2 mm/memory-failure.c | 7 mm/migrate.c | 12 net/can/j1939/bus.c | 5 net/can/j1939/socket.c | 3 net/core/sock.c | 5 net/ipv4/fib_semantics.c | 2 net/ipv4/ip_tunnel_core.c | 6 net/ipv4/nexthop.c | 28 + net/ipv4/tcp.c | 5 net/ipv4/tcp_bpf.c | 5 net/mac80211/driver-ops.h | 2 net/mptcp/pm_netlink.c | 1 net/mptcp/protocol.c | 16 net/rds/ib_frmr.c | 20 - net/rfkill/rfkill-gpio.c | 22 + sound/firewire/motu/motu-hwdep.c | 2 sound/soc/codecs/wm8940.c | 2 sound/soc/codecs/wm8974.c | 8 sound/soc/sof/intel/hda-stream.c | 2 sound/usb/mixer_quirks.c | 285 ++++++++++++++++- tools/include/linux/compiler-gcc.h | 4 tools/include/linux/overflow.h | 140 -------- tools/testing/selftests/net/fib_nexthops.sh | 12 109 files changed, 1181 insertions(+), 895 deletions(-) Alan Stern (1): USB: gadget: dummy-hcd: Fix locking bug in RT-enabled kernels Alexander Dahl (1): mtd: nand: raw: atmel: Fix comment in timings preparation Alexander Sverdlin (1): mtd: nand: raw: atmel: Respect tAR, tCLR in read setup timing Alexey Nepomnyashih (1): net: liquidio: fix overflow in octeon_init_instr_queue() Alok Tiwari (1): bnxt_en: correct offset handling for IPv6 destination address Anders Roxell (1): dmaengine: ti: edma: Fix memory allocation size for queue_priority_map André Apitzsch (1): media: i2c: imx214: Fix link frequency validation Antoine Tenart (1): tunnels: reset the GSO metadata before reusing the skb Arnd Bergmann (1): media: mtk-vcodec: venc: avoid -Wenum-compare-conditional warning Bjorn Andersson (1): soc: qcom: mdt_loader: Deal with zero e_shentsize Charles Keepax (2): ASoC: wm8940: Correct typo in control name ASoC: wm8974: Correct PLL rate rounding Chen Ni (1): ALSA: usb-audio: Convert comma to semicolon Chen Ridong (1): cgroup: split cgroup_destroy_wq into 3 workqueues Christian Loehle (1): cpufreq: Initialize cpufreq-based invariance before subsys Christoffer Sandberg (1): Input: i8042 - add TUXEDO InfinityBook Pro Gen10 AMD to i8042 quirk table Christophe Kerello (2): mtd: rawnand: stm32_fmc2: fix ECC overwrite mtd: rawnand: stm32_fmc2: avoid overlapping mappings on ECC buffer Chunfeng Yun (2): phy: broadcom: convert to devm_platform_ioremap_resource(_byname) phy: ti: convert to devm_platform_ioremap_resource(_byname) Colin Ian King (1): ASoC: SOF: Intel: hda-stream: Fix incorrect variable used in error message Cristian Ciocaltea (6): ALSA: usb-audio: Fix block comments in mixer_quirks ALSA: usb-audio: Drop unnecessary parentheses in mixer_quirks ALSA: usb-audio: Avoid multiple assignments in mixer_quirks ALSA: usb-audio: Simplify NULL comparison in mixer_quirks ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5 David Hildenbrand (1): mm/migrate_device: don't add folio to be freed to LRU in migrate_device_finalize() Duoming Zhou (1): cnic: Fix use-after-free bugs in cnic_delete_task Eric Biggers (1): crypto: af_alg - Fix incorrect boolean values in af_alg_ctx Fabian Vogt (1): tty: hvc_console: Call hvc_kick in hvc_write unconditionally Fabio Porcedda (2): USB: serial: option: add Telit Cinterion FN990A w/audio compositions USB: serial: option: add Telit Cinterion LE910C4-WWX new compositions Geert Uytterhoeven (2): pcmcia: omap_cf: Mark driver struct with __refdata to prevent section mismatch can: rcar_can: rcar_can_resume(): fix s2ram with PSCI Greg Kroah-Hartman (1): Linux 5.10.245 H. Nikolaus Schaller (2): power: supply: bq27xxx: fix error return in case of no bq27000 hdq battery power: supply: bq27xxx: restrict no-battery detection to bq27000 Hans de Goede (1): net: rfkill: gpio: Fix crash due to dereferencering uninitialized pointer Herbert Xu (1): crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg Hugo Villeneuve (1): serial: sc16is7xx: fix bug in flow control levels init Håkon Bugge (1): rds: ib: Increment i_fastreg_wrs before bailing out Ido Schimmel (6): nexthop: Pass extack to nexthop notifier rtnetlink: Add RTNH_F_TRAP flag nexthop: Emit a notification when a nexthop is added nexthop: Emit a notification when a single nexthop is replaced nexthop: Forbid FDB status change while nexthop is in a group selftests: fib_nexthops: Fix creation of non-FDB nexthops Jack Wang (1): mtd: rawnand: stm32_fmc2: Fix dma_map_sg error check Jakob Koschel (1): usb: gadget: dummy_hcd: remove usage of list iterator past the loop body Jamie Bainbridge (1): qed: Don't collect too many protection override GRC elements Jani Nikula (1): drm/i915/power: fix size for for_each_set_bit() in abox iteration Jiasheng Jiang (1): mtd: Add check for devm_kcalloc() Jiayi Li (1): usb: core: Add 0x prefix to quirks debug output Jinjiang Tu (1): mm/hugetlb: fix folio is still mapped when deleted Johan Hovold (2): phy: ti-pipe3: fix device leak at unbind phy: ti: omap-usb2: fix device leak at unbind John Garry (1): genirq/affinity: Add irq_update_affinity_desc() Jonathan Curley (1): NFSv4/flexfiles: Fix layout merge mirror check. Justin Bronder (1): i40e: increase max descriptors for XL710 Kees Cook (1): overflow: Allow mixed type arguments Keith Busch (1): overflow: Correct check_shl_overflow() comment Kohei Enju (1): igb: fix link test skipping when interface is admin down Krzysztof Kozlowski (1): phy: broadcom: ns-usb3: fix Wvoid-pointer-to-enum-cast warning Kuniyuki Iwashima (3): net: Fix null-ptr-deref by sock_lock_init_class_and_name() and rmmod. tcp_bpf: Call sk_msg_free() when tcp_bpf_send_verdict() fails to allocate psock->cork. tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect(). Liao Yuanhong (1): wifi: mac80211: fix incorrect type for ret Lukasz Czapnik (7): i40e: fix idx validation in i40e_validate_queue_map i40e: fix input validation logic for action_meta i40e: add max boundary check for VF filters i40e: add mask to apply valid bits for itr_idx i40e: add validation for ring_len param i40e: fix idx validation in config queues msg i40e: fix validation of VF state in get resources Luo Gengkun (1): tracing: Fix tracing_marker may trigger page fault during preempt_disable Maciej Fijalkowski (1): i40e: remove redundant memory barrier when cleaning Tx descs Maciej S. Szmigiero (1): KVM: SVM: Sync TPR from LAPIC into VMCB::V_TPR even if AVIC is active Mark Tinguely (1): ocfs2: fix recursive semaphore deadlock in fiemap call Masami Hiramatsu (Google) (1): tracing: dynevent: Add a missing lockdown check on dynevent Mathias Nyman (2): xhci: dbc: decouple endpoint allocation from initialization xhci: dbc: Fix full DbC transfer ring after several reconnects Matthieu Baerts (NGI0) (2): mptcp: pm: kernel: flush: do not reset ADD_ADDR limit mptcp: propagate shutdown to subflows when possible Miaohe Lin (1): mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory Miaoqian Lin (1): um: virtio_uml: Fix use-after-free after put_device in probe Michal Schmidt (1): i40e: fix IRQ freeing in i40e_vsi_request_irq_msix error path Miklos Szeredi (2): fuse: check if copy_file_range() returns larger than requested size fuse: prevent overflow in copy_file_range return value Nathan Chancellor (2): compiler-clang.h: define __SANITIZE_*__ macros only when undefined nilfs2: fix CFI failure when accessing /sys/fs/nilfs2/features/* Nick Desaulniers (1): compiler.h: drop fallback overflow checkers Nitesh Narayan Lal (1): i40e: Use irq_update_affinity_hint() Or Har-Toov (1): IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions Peng Fan (1): arm64: dts: imx8mp: Correct thermal sensor index Philipp Zabel (1): net: rfkill: gpio: add DT support Qi Xi (1): drm: bridge: cdns-mhdp8546: Fix missing mutex unlock on error path Qu Wenruo (1): btrfs: tree-checker: fix the incorrect inode ref size check Rafał Miłecki (1): phy: phy-bcm-ns-usb3: drop support for deprecated DT binding Rob Herring (1): phy: Use device_get_match_data() Salah Triki (1): EDAC/altera: Delete an inappropriate dma_free_coherent() call Samasth Norway Ananda (1): fbcon: fix integer overflow in fbcon_do_set_font Stefan Wahren (1): net: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable() Stephan Gerhold (1): dmaengine: qcom: bam_dma: Fix DT error handling for num-channels/ees Stéphane Grosjean (1): can: peak_usb: fix shift-out-of-bounds issue Takashi Iwai (1): ALSA: usb-audio: Fix build with CONFIG_INPUT=n Takashi Sakamoto (1): ALSA: firewire-motu: drop EPOLLOUT from poll return values as write is not supported Tariq Toukan (1): Revert "net/mlx5e: Update and set Xon/Xoff upon port speed set" Tetsuo Handa (2): can: j1939: j1939_sk_bind(): call j1939_priv_put() immediately when j1939_local_ecu_get() failed can: j1939: j1939_local_ecu_get(): undo increment when j1939_local_ecu_get() fails Thomas Fourier (1): mmc: mvsdio: Fix dma_unmap_sg() nents value Thomas Gleixner (2): genirq: Export affinity setter for modules genirq: Provide new interfaces for affinity hints Thomas Zimmermann (1): fbcon: Fix OOB access in font allocation Tigran Mkrtchyan (1): flexfiles/pNFS: fix NULL checks on result of ff_layout_choose_ds_for_read Trond Myklebust (2): NFSv4: Don't clear capabilities that won't be reset NFSv4: Clear the NFS_CAP_XATTR flag if not supported by the server Vincent Mailhol (3): can: hi311x: populate ndo_change_mtu() to prevent buffer overflow can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow Wei Yang (1): mm/khugepaged: fix the address passed to notifier on testing young Yeounsu Moon (1): net: natsemi: fix `rx_dropped` double accounting on `netif_rx()` failure Zabelin Nikita (1): drm/gma500: Fix null dereference in hdmi teardown

1 month, 4 weeks

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Linux 5.4.300

by Greg Kroah-Hartman

I'm announcing the release of the 5.4.300 kernel. All users of the 5.4 kernel series must upgrade. The updated 5.4.y git tree can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-5.4.y and can be browsed at the normal kernel.org git web browser: https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary thanks, greg k-h ------------ Makefile | 2 arch/x86/kvm/svm.c | 3 drivers/dma/qcom/bam_dma.c | 8 drivers/dma/ti/edma.c | 4 drivers/edac/altera_edac.c | 1 drivers/gpu/drm/gma500/oaktrail_hdmi.c | 2 drivers/infiniband/hw/mlx5/devx.c | 1 drivers/mmc/host/mvsdio.c | 2 drivers/mtd/nand/raw/atmel/nand-controller.c | 18 - drivers/mtd/nand/raw/stm32_fmc2_nand.c | 45 +- drivers/net/can/rcar/rcar_can.c | 8 drivers/net/can/spi/hi311x.c | 1 drivers/net/can/sun4i_can.c | 1 drivers/net/can/usb/mcba_usb.c | 1 drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 drivers/net/ethernet/broadcom/cnic.c | 3 drivers/net/ethernet/cavium/liquidio/request_manager.c | 2 drivers/net/ethernet/freescale/fec_main.c | 3 drivers/net/ethernet/intel/i40e/i40e.h | 1 drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 25 + drivers/net/ethernet/intel/i40e/i40e_main.c | 10 drivers/net/ethernet/intel/i40e/i40e_txrx.c | 3 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 46 ++ drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h | 3 drivers/net/ethernet/intel/igb/igb_ethtool.c | 5 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 2 drivers/net/ethernet/natsemi/ns83820.c | 13 drivers/pcmcia/omap_cf.c | 8 drivers/phy/ti/phy-ti-pipe3.c | 13 drivers/power/supply/bq27xxx_battery.c | 4 drivers/soc/qcom/mdt_loader.c | 12 drivers/tty/hvc/hvc_console.c | 6 drivers/tty/serial/sc16is7xx.c | 13 drivers/usb/core/hub.c | 21 - drivers/usb/core/hub.h | 1 drivers/usb/core/quirks.c | 2 drivers/usb/gadget/udc/dummy_hcd.c | 25 - drivers/usb/serial/option.c | 17 + drivers/video/fbdev/core/fbcon.c | 13 fs/fuse/file.c | 5 fs/hugetlbfs/inode.c | 14 fs/nfs/nfs4proc.c | 1 fs/nilfs2/sysfs.c | 4 fs/nilfs2/sysfs.h | 8 fs/ocfs2/extent_map.c | 10 include/linux/interrupt.h | 72 +++- include/net/sock.h | 40 ++ kernel/cgroup/cgroup.c | 43 ++ kernel/irq/manage.c | 111 ++++++ mm/khugepaged.c | 2 mm/memory-failure.c | 7 mm/migrate.c | 12 net/can/j1939/bus.c | 5 net/can/j1939/socket.c | 3 net/core/sock.c | 5 net/ipv4/tcp.c | 5 net/ipv4/tcp_bpf.c | 5 net/mac80211/driver-ops.h | 2 net/rds/ib_frmr.c | 20 - net/rfkill/rfkill-gpio.c | 22 + sound/firewire/motu/motu-hwdep.c | 2 sound/soc/codecs/wm8940.c | 2 sound/soc/codecs/wm8974.c | 8 sound/soc/sof/intel/hda-stream.c | 2 sound/usb/mixer_quirks.c | 279 ++++++++++++++++- 65 files changed, 816 insertions(+), 223 deletions(-) Alan Stern (1): USB: gadget: dummy-hcd: Fix locking bug in RT-enabled kernels Alexander Dahl (1): mtd: nand: raw: atmel: Fix comment in timings preparation Alexander Sverdlin (1): mtd: nand: raw: atmel: Respect tAR, tCLR in read setup timing Alexey Nepomnyashih (1): net: liquidio: fix overflow in octeon_init_instr_queue() Anders Roxell (1): dmaengine: ti: edma: Fix memory allocation size for queue_priority_map Bjorn Andersson (1): soc: qcom: mdt_loader: Deal with zero e_shentsize Charles Keepax (2): ASoC: wm8940: Correct typo in control name ASoC: wm8974: Correct PLL rate rounding Chen Ni (1): ALSA: usb-audio: Convert comma to semicolon Chen Ridong (1): cgroup: split cgroup_destroy_wq into 3 workqueues Christophe Kerello (2): mtd: rawnand: stm32_fmc2: fix ECC overwrite mtd: rawnand: stm32_fmc2: avoid overlapping mappings on ECC buffer Colin Ian King (1): ASoC: SOF: Intel: hda-stream: Fix incorrect variable used in error message Cristian Ciocaltea (5): ALSA: usb-audio: Fix block comments in mixer_quirks ALSA: usb-audio: Avoid multiple assignments in mixer_quirks ALSA: usb-audio: Simplify NULL comparison in mixer_quirks ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5 David Hildenbrand (1): mm/migrate_device: don't add folio to be freed to LRU in migrate_device_finalize() Duoming Zhou (1): cnic: Fix use-after-free bugs in cnic_delete_task Fabian Vogt (1): tty: hvc_console: Call hvc_kick in hvc_write unconditionally Fabio Porcedda (2): USB: serial: option: add Telit Cinterion FN990A w/audio compositions USB: serial: option: add Telit Cinterion LE910C4-WWX new compositions Geert Uytterhoeven (2): pcmcia: omap_cf: Mark driver struct with __refdata to prevent section mismatch can: rcar_can: rcar_can_resume(): fix s2ram with PSCI Greg Kroah-Hartman (1): Linux 5.4.300 H. Nikolaus Schaller (2): power: supply: bq27xxx: fix error return in case of no bq27000 hdq battery power: supply: bq27xxx: restrict no-battery detection to bq27000 Hans de Goede (1): net: rfkill: gpio: Fix crash due to dereferencering uninitialized pointer Hugo Villeneuve (1): serial: sc16is7xx: fix bug in flow control levels init Håkon Bugge (1): rds: ib: Increment i_fastreg_wrs before bailing out Jakob Koschel (1): usb: gadget: dummy_hcd: remove usage of list iterator past the loop body Jiayi Li (1): usb: core: Add 0x prefix to quirks debug output Jinjiang Tu (1): mm/hugetlb: fix folio is still mapped when deleted Johan Hovold (1): phy: ti-pipe3: fix device leak at unbind John Garry (1): genirq/affinity: Add irq_update_affinity_desc() Justin Bronder (1): i40e: increase max descriptors for XL710 Kohei Enju (1): igb: fix link test skipping when interface is admin down Kuniyuki Iwashima (3): net: Fix null-ptr-deref by sock_lock_init_class_and_name() and rmmod. tcp_bpf: Call sk_msg_free() when tcp_bpf_send_verdict() fails to allocate psock->cork. tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect(). Liao Yuanhong (1): wifi: mac80211: fix incorrect type for ret Lukasz Czapnik (7): i40e: fix idx validation in i40e_validate_queue_map i40e: fix input validation logic for action_meta i40e: add max boundary check for VF filters i40e: add validation for ring_len param i40e: fix idx validation in config queues msg i40e: fix validation of VF state in get resources i40e: add mask to apply valid bits for itr_idx Maciej Fijalkowski (1): i40e: remove redundant memory barrier when cleaning Tx descs Maciej S. Szmigiero (1): KVM: SVM: Sync TPR from LAPIC into VMCB::V_TPR even if AVIC is active Mark Tinguely (1): ocfs2: fix recursive semaphore deadlock in fiemap call Mathias Nyman (1): usb: hub: Fix flushing of delayed work used for post resume purposes Miaohe Lin (1): mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory Michal Schmidt (1): i40e: fix IRQ freeing in i40e_vsi_request_irq_msix error path Miklos Szeredi (2): fuse: check if copy_file_range() returns larger than requested size fuse: prevent overflow in copy_file_range return value Nathan Chancellor (1): nilfs2: fix CFI failure when accessing /sys/fs/nilfs2/features/* Nitesh Narayan Lal (1): i40e: Use irq_update_affinity_hint() Or Har-Toov (1): IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions Philipp Zabel (1): net: rfkill: gpio: add DT support Salah Triki (1): EDAC/altera: Delete an inappropriate dma_free_coherent() call Samasth Norway Ananda (1): fbcon: fix integer overflow in fbcon_do_set_font Stefan Wahren (1): net: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable() Stephan Gerhold (1): dmaengine: qcom: bam_dma: Fix DT error handling for num-channels/ees Stéphane Grosjean (1): can: peak_usb: fix shift-out-of-bounds issue Takashi Iwai (1): ALSA: usb-audio: Fix build with CONFIG_INPUT=n Takashi Sakamoto (1): ALSA: firewire-motu: drop EPOLLOUT from poll return values as write is not supported Tariq Toukan (1): Revert "net/mlx5e: Update and set Xon/Xoff upon port speed set" Tetsuo Handa (2): can: j1939: j1939_sk_bind(): call j1939_priv_put() immediately when j1939_local_ecu_get() failed can: j1939: j1939_local_ecu_get(): undo increment when j1939_local_ecu_get() fails Thomas Fourier (1): mmc: mvsdio: Fix dma_unmap_sg() nents value Thomas Gleixner (2): genirq: Export affinity setter for modules genirq: Provide new interfaces for affinity hints Thomas Zimmermann (1): fbcon: Fix OOB access in font allocation Trond Myklebust (1): NFSv4: Don't clear capabilities that won't be reset Vincent Mailhol (3): can: hi311x: populate ndo_change_mtu() to prevent buffer overflow can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow Wei Yang (1): mm/khugepaged: fix the address passed to notifier on testing young Yeounsu Moon (1): net: natsemi: fix `rx_dropped` double accounting on `netif_rx()` failure Zabelin Nikita (1): drm/gma500: Fix null dereference in hdmi teardown

1 month, 4 weeks

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[PATCH v2] i2c: fix reference leak in MP2 PCI device

by Ma Ke

In i2c_amd_probe(), amd_mp2_find_device() utilizes driver_find_next_device() which internally calls driver_find_device() to locate the matching device. driver_find_device() increments the reference count of the found device by calling get_device(), but amd_mp2_find_device() fails to call put_device() to decrement the reference count before returning. This results in a reference count leak of the PCI device each time i2c_amd_probe() is executed, which may prevent the device from being properly released and cause a memory leak. Found by code review. Cc: stable(a)vger.kernel.org Fixes: 529766e0a011 ("i2c: Add drivers for the AMD PCIe MP2 I2C controller") Signed-off-by: Ma Ke <make24(a)iscas.ac.cn> --- Changes in v2: - modified the missing initialization in the patch. Sorry for the omission. --- drivers/i2c/busses/i2c-amd-mp2-pci.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-amd-mp2-pci.c b/drivers/i2c/busses/i2c-amd-mp2-pci.c index ef7370d3dbea..60edbabc2986 100644 --- a/drivers/i2c/busses/i2c-amd-mp2-pci.c +++ b/drivers/i2c/busses/i2c-amd-mp2-pci.c @@ -458,13 +458,16 @@ struct amd_mp2_dev *amd_mp2_find_device(void) { struct device *dev; struct pci_dev *pci_dev; + struct amd_mp2_dev *mp2_dev; dev = driver_find_next_device(&amd_mp2_pci_driver.driver, NULL); if (!dev) return NULL; pci_dev = to_pci_dev(dev); - return (struct amd_mp2_dev *)pci_get_drvdata(pci_dev); + mp2_dev = (struct amd_mp2_dev *)pci_get_drvdata(pci_dev); + put_device(dev); + return mp2_dev; } EXPORT_SYMBOL_GPL(amd_mp2_find_device); -- 2.17.1

1 month, 4 weeks

4
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[PATCH 2/2] rv: Make rtapp/pagefault monitor depends on CONFIG_MMU

by Nam Cao

There is no page fault without MMU. Compiling the rtapp/pagefault monitor without CONFIG_MMU fails as page fault tracepoints' definitions are not available. Make rtapp/pagefault monitor depends on CONFIG_MMU. Fixes: 9162620eb604 ("rv: Add rtapp_pagefault monitor") Signed-off-by: Nam Cao <namcao(a)linutronix.de> Reported-by: kernel test robot <lkp(a)intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202509260455.6Z9Vkty4-lkp@intel.com/ Cc: stable(a)vger.kernel.org --- kernel/trace/rv/monitors/pagefault/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/trace/rv/monitors/pagefault/Kconfig b/kernel/trace/rv/monitors/pagefault/Kconfig index 5e16625f1653..0e013f00c33b 100644 --- a/kernel/trace/rv/monitors/pagefault/Kconfig +++ b/kernel/trace/rv/monitors/pagefault/Kconfig @@ -5,6 +5,7 @@ config RV_MON_PAGEFAULT select RV_LTL_MONITOR depends on RV_MON_RTAPP depends on X86 || RISCV + depends on MMU default y select LTL_MON_EVENTS_ID bool "pagefault monitor" -- 2.51.0

1 month, 4 weeks

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[PATCH 1/2] rv: Fully convert enabled_monitors to use list_head as iterator

by Nam Cao

The callbacks in enabled_monitors_seq_ops are inconsistent. Some treat the iterator as struct rv_monitor *, while others treat the iterator as struct list_head *. This causes a wrong type cast and crashes the system as reported by Nathan. Convert everything to use struct list_head * as iterator. This also makes enabled_monitors consistent with available_monitors. Fixes: de090d1ccae1 ("rv: Fix wrong type cast in enabled_monitors_next()") Reported-by: Nathan Chancellor <nathan(a)kernel.org> Closes: https://lore.kernel.org/linux-trace-kernel/20250923002004.GA2836051@ax162/ Signed-off-by: Nam Cao <namcao(a)linutronix.de> Cc: <stable(a)vger.kernel.org> --- kernel/trace/rv/rv.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/kernel/trace/rv/rv.c b/kernel/trace/rv/rv.c index 48338520376f..43e9ea473cda 100644 --- a/kernel/trace/rv/rv.c +++ b/kernel/trace/rv/rv.c @@ -501,7 +501,7 @@ static void *enabled_monitors_next(struct seq_file *m, void *p, loff_t *pos) list_for_each_entry_continue(mon, &rv_monitors_list, list) { if (mon->enabled) - return mon; + return &mon->list; } return NULL; @@ -509,7 +509,7 @@ static void *enabled_monitors_next(struct seq_file *m, void *p, loff_t *pos) static void *enabled_monitors_start(struct seq_file *m, loff_t *pos) { - struct rv_monitor *mon; + struct list_head *head; loff_t l; mutex_lock(&rv_interface_lock); @@ -517,15 +517,15 @@ static void *enabled_monitors_start(struct seq_file *m, loff_t *pos) if (list_empty(&rv_monitors_list)) return NULL; - mon = list_entry(&rv_monitors_list, struct rv_monitor, list); + head = &rv_monitors_list; for (l = 0; l <= *pos; ) { - mon = enabled_monitors_next(m, mon, &l); - if (!mon) + head = enabled_monitors_next(m, head, &l); + if (!head) break; } - return mon; + return head; } /* -- 2.51.0

1 month, 4 weeks

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[PATCH] stable: crypto: sha256 - fix crash at kexec

by Breno Leitao

Loading a large (~2.1G) files with kexec crashes the host with when running: # kexec --load kernel --initrd initrd_with_2G_or_more UBSAN: signed-integer-overflow in ./include/crypto/sha256_base.h:64:19 34152083 * 64 cannot be represented in type 'int' ... BUG: unable to handle page fault for address: ff9fffff83b624c0 sha256_update (lib/crypto/sha256.c:137) crypto_sha256_update (crypto/sha256_generic.c:40) kexec_calculate_store_digests (kernel/kexec_file.c:769) __se_sys_kexec_file_load (kernel/kexec_file.c:397 kernel/kexec_file.c:332) ... (Line numbers based on commit da274362a7bd9 ("Linux 6.12.49") This is not happening upstream (v6.16+), given that `block` type was upgraded from "int" to "size_t" in commit 74a43a2cf5e8 ("crypto: lib/sha256 - Move partial block handling out") Upgrade the block type similar to the commit above, avoiding hitting the overflow. This patch is only suitable for the stable tree, and before 6.16, which got commit 74a43a2cf5e8 ("crypto: lib/sha256 - Move partial block handling out") Signed-off-by: Breno Leitao <leitao(a)debian.org> Fixes: 11b8d5ef9138 ("crypto: sha256 - implement base layer for SHA-256") # not after v6.16 Reported-by: Michael van der Westhuizen <rmikey(a)meta.com> Reported-by: Tobias Fleig <tfleig(a)meta.com> --- include/crypto/sha256_base.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/crypto/sha256_base.h b/include/crypto/sha256_base.h index e0418818d63c8..fa63af10102b2 100644 --- a/include/crypto/sha256_base.h +++ b/include/crypto/sha256_base.h @@ -44,7 +44,7 @@ static inline int lib_sha256_base_do_update(struct sha256_state *sctx, sctx->count += len; if (unlikely((partial + len) >= SHA256_BLOCK_SIZE)) { - int blocks; + size_t blocks; if (partial) { int p = SHA256_BLOCK_SIZE - partial; --- base-commit: da274362a7bd9ab3a6e46d15945029145ebce672 change-id: 20251001-stable_crash-f2151baf043b Best regards, -- Breno Leitao <leitao(a)debian.org>

1 month, 4 weeks

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New September Order. 27115 Thursday, October 2, 2025 at 05:34:29 AM

by Info - Albinayah 204

Hi Stable, Please provide a quote for your products: Include: 1.Pricing (per unit) 2.Delivery cost & timeline 3.Quote expiry date Deadline: September Thanks! Kamal Prasad Albinayah Trading

1 month, 4 weeks

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[PATCH 4/7] drm/amd/display: Incorrect Mirror Cositing

by Alex Hung

From: Jesse Agate <jesse.agate(a)amd.com> [WHY] hinit/vinit are incorrect in the case of mirroring. [HOW] Cositing sign must be flipped when image is mirrored in the vertical or horizontal direction. Cc: Mario Limonciello <mario.limonciello(a)amd.com> Cc: Alex Deucher <alexander.deucher(a)amd.com> Cc: stable(a)vger.kernel.org Reviewed-by: Samson Tam <samson.tam(a)amd.com> Signed-off-by: Jesse Agate <jesse.agate(a)amd.com> Signed-off-by: Brendan Leder <breleder(a)amd.com> Signed-off-by: Alex Hung <alex.hung(a)amd.com> --- drivers/gpu/drm/amd/display/dc/sspl/dc_spl.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/sspl/dc_spl.c b/drivers/gpu/drm/amd/display/dc/sspl/dc_spl.c index 55b929ca7982..b1fb0f8a253a 100644 --- a/drivers/gpu/drm/amd/display/dc/sspl/dc_spl.c +++ b/drivers/gpu/drm/amd/display/dc/sspl/dc_spl.c @@ -641,16 +641,16 @@ static void spl_calculate_inits_and_viewports(struct spl_in *spl_in, /* this gives the direction of the cositing (negative will move * left, right otherwise) */ - int sign = 1; + int h_sign = flip_horz_scan_dir ? -1 : 1; + int v_sign = flip_vert_scan_dir ? -1 : 1; switch (spl_in->basic_in.cositing) { - case CHROMA_COSITING_TOPLEFT: - init_adj_h = spl_fixpt_from_fraction(sign, 4); - init_adj_v = spl_fixpt_from_fraction(sign, 4); + init_adj_h = spl_fixpt_from_fraction(h_sign, 4); + init_adj_v = spl_fixpt_from_fraction(v_sign, 4); break; case CHROMA_COSITING_LEFT: - init_adj_h = spl_fixpt_from_fraction(sign, 4); + init_adj_h = spl_fixpt_from_fraction(h_sign, 4); init_adj_v = spl_fixpt_zero; break; case CHROMA_COSITING_NONE: -- 2.43.0

1 month, 4 weeks

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[PATCH 3/7] drm/amd/display: Enable Dynamic DTBCLK Switch

by Alex Hung

From: Fangzhi Zuo <Jerry.Zuo(a)amd.com> [WHAT] Since dcn35, DTBCLK can be disabled when no DP2 sink connected for power saving purpose. Cc: Mario Limonciello <mario.limonciello(a)amd.com> Cc: Alex Deucher <alexander.deucher(a)amd.com> Cc: stable(a)vger.kernel.org Reviewed-by: Aurabindo Pillai <aurabindo.pillai(a)amd.com> Signed-off-by: Fangzhi Zuo <Jerry.Zuo(a)amd.com> Signed-off-by: Alex Hung <alex.hung(a)amd.com> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 20ab9fd1b82a..6f5be090b744 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2000,6 +2000,10 @@ static int amdgpu_dm_init(struct amdgpu_device *adev) init_data.flags.disable_ips_in_vpb = 0; + /* DCN35 and above supports dynamic DTBCLK switch */ + if (amdgpu_ip_version(adev, DCE_HWIP, 0) >= IP_VERSION(3, 5, 0)) + init_data.flags.allow_0_dtb_clk = true; + /* Enable DWB for tested platforms only */ if (amdgpu_ip_version(adev, DCE_HWIP, 0) >= IP_VERSION(3, 0, 0)) init_data.num_virtual_links = 1; -- 2.43.0

1 month, 4 weeks

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+ mm-ksm-fix-flag-dropping-behavior-in-ksm_madvise.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: mm/ksm: fix flag-dropping behavior in ksm_madvise has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-ksm-fix-flag-dropping-behavior-in-ksm_madvise.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Jakub Acs <acsjakub(a)amazon.de> Subject: mm/ksm: fix flag-dropping behavior in ksm_madvise Date: Wed, 1 Oct 2025 09:03:52 +0000 syzkaller discovered the following crash: (kernel BUG) [ 44.607039] ------------[ cut here ]------------ [ 44.607422] kernel BUG at mm/userfaultfd.c:2067! [ 44.608148] Oops: invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN NOPTI [ 44.608814] CPU: 1 UID: 0 PID: 2475 Comm: reproducer Not tainted 6.16.0-rc6 #1 PREEMPT(none) [ 44.609635] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.610695] RIP: 0010:userfaultfd_release_all+0x3a8/0x460 <snip other registers, drop unreliable trace> [ 44.617726] Call Trace: [ 44.617926] <TASK> [ 44.619284] userfaultfd_release+0xef/0x1b0 [ 44.620976] __fput+0x3f9/0xb60 [ 44.621240] fput_close_sync+0x110/0x210 [ 44.622222] __x64_sys_close+0x8f/0x120 [ 44.622530] do_syscall_64+0x5b/0x2f0 [ 44.622840] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 44.623244] RIP: 0033:0x7f365bb3f227 Kernel panics because it detects UFFD inconsistency during userfaultfd_release_all(). Specifically, a VMA which has a valid pointer to vma->vm_userfaultfd_ctx, but no UFFD flags in vma->vm_flags. The inconsistency is caused in ksm_madvise(): when user calls madvise() with MADV_UNMEARGEABLE on a VMA that is registered for UFFD in MINOR mode, it accidentally clears all flags stored in the upper 32 bits of vma->vm_flags. Assuming x86_64 kernel build, unsigned long is 64-bit and unsigned int and int are 32-bit wide. This setup causes the following mishap during the &= ~VM_MERGEABLE assignment. VM_MERGEABLE is a 32-bit constant of type unsigned int, 0x8000'0000. After ~ is applied, it becomes 0x7fff'ffff unsigned int, which is then promoted to unsigned long before the & operation. This promotion fills upper 32 bits with leading 0s, as we're doing unsigned conversion (and even for a signed conversion, this wouldn't help as the leading bit is 0). & operation thus ends up AND-ing vm_flags with 0x0000'0000'7fff'ffff instead of intended 0xffff'ffff'7fff'ffff and hence accidentally clears the upper 32-bits of its value. Fix it by changing `VM_MERGEABLE` constant to unsigned long, using the BIT() macro. Note: other VM_* flags are not affected: This only happens to the VM_MERGEABLE flag, as the other VM_* flags are all constants of type int and after ~ operation, they end up with leading 1 and are thus converted to unsigned long with leading 1s. Note 2: After commit 31defc3b01d9 ("userfaultfd: remove (VM_)BUG_ON()s"), this is no longer a kernel BUG, but a WARNING at the same place: [ 45.595973] WARNING: CPU: 1 PID: 2474 at mm/userfaultfd.c:2067 but the root-cause (flag-drop) remains the same. Link: https://lkml.kernel.org/r/20251001090353.57523-2-acsjakub@amazon.de Fixes: 7677f7fd8be7 ("userfaultfd: add minor fault registration mode") Signed-off-by: Jakub Acs <acsjakub(a)amazon.de> Acked-by: David Hildenbrand <david(a)redhat.com> Acked-by: SeongJae Park <sj(a)kernel.org> Cc: Xu Xin <xu.xin16(a)zte.com.cn> Cc: Chengming Zhou <chengming.zhou(a)linux.dev> Cc: Peter Xu <peterx(a)redhat.com> Cc: Axel Rasmussen <axelrasmussen(a)google.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- include/linux/mm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/include/linux/mm.h~mm-ksm-fix-flag-dropping-behavior-in-ksm_madvise +++ a/include/linux/mm.h @@ -296,7 +296,7 @@ extern unsigned int kobjsize(const void #define VM_MIXEDMAP 0x10000000 /* Can contain "struct page" and pure PFN pages */ #define VM_HUGEPAGE 0x20000000 /* MADV_HUGEPAGE marked this vma */ #define VM_NOHUGEPAGE 0x40000000 /* MADV_NOHUGEPAGE marked this vma */ -#define VM_MERGEABLE 0x80000000 /* KSM may merge identical pages */ +#define VM_MERGEABLE BIT(31) /* KSM may merge identical pages */ #ifdef CONFIG_ARCH_USES_HIGH_VMA_FLAGS #define VM_HIGH_ARCH_BIT_0 32 /* bit only usable on 64-bit architectures */ _ Patches currently in -mm which might be from acsjakub(a)amazon.de are mm-ksm-fix-flag-dropping-behavior-in-ksm_madvise.patch

1 month, 4 weeks

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[PATCH 1/1] selftest/sched: skip the test if smt is not enabled

by Yifei Liu

The core scheduling is for smt enabled cpus. It is not returns failure and gives plenty of error messages and not clearly points to the smt issue if the smt is disabled. It just mention "not a core sched system" and many other messages. For example: Not a core sched system tid=210574, / tgid=210574 / pgid=210574: ffffffffffffffff Not a core sched system tid=210575, / tgid=210575 / pgid=210574: ffffffffffffffff Not a core sched system tid=210577, / tgid=210575 / pgid=210574: ffffffffffffffff (similar things many other times) In this patch, the test will first read /sys/devices/system/cpu/smt/active, if the file cannot be opened or its value is 0, the test is skipped with an explanatory message. This helps developers understand why it is skipped and avoids unnecessary attention when running the full selftest suite. Signed-off-by: Yifei Liu <yifei.l.liu(a)oracle.com> --- tools/testing/selftests/sched/cs_prctl_test.c | 23 ++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/sched/cs_prctl_test.c b/tools/testing/selftests/sched/cs_prctl_test.c index 52d97fae4dbd..7ce8088cde6a 100644 --- a/tools/testing/selftests/sched/cs_prctl_test.c +++ b/tools/testing/selftests/sched/cs_prctl_test.c @@ -32,6 +32,8 @@ #include <stdlib.h> #include <string.h> +#include "../kselftest.h" + #if __GLIBC_PREREQ(2, 30) == 0 #include <sys/syscall.h> static pid_t gettid(void) @@ -109,6 +111,22 @@ static void handle_usage(int rc, char *msg) exit(rc); } +int check_smt(void) +{ + int c = 0; + FILE *file; + + file = fopen("/sys/devices/system/cpu/smt/active", "r"); + if (!file) + return 0; + c = fgetc(file) - 0x30; + fclose(file); + if (c == 0 || c == 1) + return c; + //if fgetc returns EOF or -1 for correupted files, return 0. + return 0; +} + static unsigned long get_cs_cookie(int pid) { unsigned long long cookie; @@ -271,7 +289,10 @@ int main(int argc, char *argv[]) delay = -1; srand(time(NULL)); - + if (!check_smt()) { + ksft_test_result_skip("smt not enabled\n"); + return 1; + } /* put into separate process group */ if (setpgid(0, 0) != 0) handle_error("process group"); -- 2.50.1

1 month, 4 weeks

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[PATCH 6.16 000/143] 6.16.10-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 6.16.10 release. There are 143 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Thu, 02 Oct 2025 14:37:59 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.16.10-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.16.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 6.16.10-rc1 Jason Gunthorpe <jgg(a)ziepe.ca> iommufd: Fix race during abort for file descriptors Khairul Anuar Romli <khairul.anuar.romli(a)altera.com> spi: cadence-qspi: defer runtime support on socfpga if reset bit is enabled Khairul Anuar Romli <khairul.anuar.romli(a)altera.com> spi: cadence-quadspi: Implement refcount to handle unbind during busy Andrea Righi <arighi(a)nvidia.com> sched_ext: idle: Handle migration-disabled tasks in BPF code Andrea Righi <arighi(a)nvidia.com> sched_ext: idle: Make local functions static in ext_idle.c Johannes Berg <johannes.berg(a)intel.com> wifi: iwlwifi: pcie: fix byte count table for some devices Johannes Berg <johannes.berg(a)intel.com> wifi: iwlwifi: fix byte count table for old devices Thomas Zimmermann <tzimmermann(a)suse.de> fbcon: Fix OOB access in font allocation Samasth Norway Ananda <samasth.norway.ananda(a)oracle.com> fbcon: fix integer overflow in fbcon_do_set_font Akinobu Mita <akinobu.mita(a)gmail.com> mm/damon/sysfs: do not ignore callback's return value in damon_sysfs_damon_call() Jinjiang Tu <tujinjiang(a)huawei.com> mm/hugetlb: fix folio is still mapped when deleted Alexander Popov <alex.popov(a)linux.com> x86/Kconfig: Reenable PTDUMP on i386 Thomas Gleixner <tglx(a)linutronix.de> x86/topology: Implement topology_is_core_online() to address SMT regression Alexandre Ghiti <alexghiti(a)rivosinc.com> riscv: Use an atomic xchg in pudp_huge_get_and_clear() Max Kellermann <max.kellermann(a)ionos.com> netfs: fix reference leak Eric Biggers <ebiggers(a)kernel.org> kmsan: fix out-of-bounds access to shadow memory Hans de Goede <hansg(a)kernel.org> gpiolib: Extend software-node support to support secondary software-nodes Jakub Acs <acsjakub(a)amazon.de> fs/proc/task_mmu: check p->vec_buf for NULL Zhen Ni <zhen.ni(a)easystack.cn> afs: Fix potential null pointer dereference in afs_put_server Jason Wang <jasowang(a)redhat.com> vhost-net: flush batched before enabling notifications Michael S. Tsirkin <mst(a)redhat.com> Revert "vhost/net: Defer TX queue re-enable until after sendmsg" Christian Marangi <ansuelsmth(a)gmail.com> pinctrl: airoha: fix wrong MDIO function bitmaks Christian Marangi <ansuelsmth(a)gmail.com> pinctrl: airoha: fix wrong PHY LED mux value for LED1 GPIO46 Matthew Schwartz <matthew.schwartz(a)linux.dev> drm/amd/display: Only restore backlight after amdgpu_dm_init or dm_resume Nirmoy Das <nirmoyd(a)nvidia.com> drm/ast: Use msleep instead of mdelay for edid read Thomas Hellström <thomas.hellstrom(a)linux.intel.com> drm/xe: Don't copy pinned kernel bos twice on suspend Josua Mayer <josua(a)solid-run.com> arm64: dts: marvell: cn9132-clearfog: fix multi-lane pci x2 and x4 ports Josua Mayer <josua(a)solid-run.com> arm64: dts: marvell: cn9132-clearfog: disable eMMC high-speed modes Josua Mayer <josua(a)solid-run.com> arm64: dts: marvell: cn913x-solidrun: fix sata ports status Nobuhiro Iwamatsu <iwamatsu(a)nigauri.org> ARM: dts: socfpga: sodia: Fix mdio bus probe and PHY address Masami Hiramatsu (Google) <mhiramat(a)kernel.org> tracing: fprobe: Fix to remove recorded module addresses from filter Masami Hiramatsu (Google) <mhiramat(a)kernel.org> tracing: fgraph: Protect return handler from recursion loop Masami Hiramatsu (Google) <mhiramat(a)kernel.org> tracing: dynevent: Add a missing lockdown check on dynevent Eric Biggers <ebiggers(a)kernel.org> crypto: af_alg - Fix incorrect boolean values in af_alg_ctx Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: improve VF MAC filters accounting Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add mask to apply valid bits for itr_idx Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add max boundary check for VF filters Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix validation of VF state in get resources Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix input validation logic for action_meta Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix idx validation in config queues msg Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix idx validation in i40e_validate_queue_map Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add validation for ring_len param Amit Chaudhari <amitchaudhari(a)mac.com> HID: asus: add support for missing PX series fn keys Xinpeng Sun <xinpeng.sun(a)intel.com> HID: intel-thc-hid: intel-quickspi: Add WCL Device IDs Wang Liang <wangliang74(a)huawei.com> tracing/osnoise: Fix slab-out-of-bounds in _parse_integer_limit() Sasha Levin <sashal(a)kernel.org> Revert "drm/xe/guc: Enable extended CAT error reporting" Sasha Levin <sashal(a)kernel.org> Revert "drm/xe/guc: Set RCS/CCS yield policy" Sang-Heon Jeon <ekffu200098(a)gmail.com> smb: client: fix wrong index reference in smb2_compound_op() Daniel Lee <dany97(a)live.ca> platform/x86: lg-laptop: Fix WMAB call in fan_mode_store() Adrián Larumbe <adrian.larumbe(a)collabora.com> drm/panthor: Defer scheduler entitiy destruction to queue release Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> futex: Use correct exit on failure from futex_hash_allocate_default() Melissa Wen <mwen(a)igalia.com> drm/amd/display: remove output_tf_change flag Suraj Kandpal <suraj.kandpal(a)intel.com> drm/i915/ddi: Guard reg_val against a INVALID_TRANSCODER Lucas De Marchi <lucas.demarchi(a)intel.com> drm/xe: Fix build with CONFIG_MODULES=n Michal Wajdeczko <michal.wajdeczko(a)intel.com> drm/xe/vf: Don't expose sysfs attributes not applicable for VFs Ioana Ciornei <ioana.ciornei(a)nxp.com> gpio: regmap: fix memory leak of gpio_regmap structure Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> futex: Prevent use-after-free during requeue-PI Zabelin Nikita <n.zabelin(a)mt-integration.ru> drm/gma500: Fix null dereference in hdmi teardown Dan Carpenter <dan.carpenter(a)linaro.org> octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: lantiq_gswip: suppress -EINVAL errors for bridge FDB entries added to the CPU port Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup() Carolina Jubran <cjubran(a)nvidia.com> net/mlx5e: Fix missing FEC RS stats for RS_544_514_INTERLEAVED_QUAD Yevgeny Kliteynik <kliteyn(a)nvidia.com> net/mlx5: HWS, ignore flow level for multi-dest table Vlad Dogaru <vdogaru(a)nvidia.com> net/mlx5: HWS, remove unused create_dest_array parameter Moshe Shemesh <moshe(a)nvidia.com> net/mlx5: fs, fix UAF in flow counter release Ido Schimmel <idosch(a)nvidia.com> selftests: fib_nexthops: Fix creation of non-FDB nexthops Ido Schimmel <idosch(a)nvidia.com> nexthop: Forbid FDB status change while nexthop is in a group Jason Baron <jbaron(a)akamai.com> net: allow alloc_skb_with_frags() to use MAX_SKB_FRAGS Alok Tiwari <alok.a.tiwari(a)oracle.com> bnxt_en: correct offset handling for IPv6 destination address Jacob Keller <jacob.e.keller(a)intel.com> broadcom: fix support for PTP_EXTTS_REQUEST2 ioctl Jacob Keller <jacob.e.keller(a)intel.com> broadcom: fix support for PTP_PEROUT_DUTY_CYCLE Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: MGMT: Fix possible UAFs Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> vhost: Take a reference on the task in struct vhost_task. Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: hci_sync: Fix hci_resume_advertising_sync Petr Malat <oss(a)malat.biz> ethernet: rvu-af: Remove slash from the driver name Sidraya Jayagond <sidraya(a)linux.ibm.com> net/smc: fix warning in smc_rx_splice() when calling get_page() Wang Liang <wangliang74(a)huawei.com> net: tun: Update napi->skb after XDP process Stéphane Grosjean <stephane.grosjean(a)hms-networks.com> can: peak_usb: fix shift-out-of-bounds issue Vincent Mailhol <mailhol(a)kernel.org> can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: hi311x: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow Sabrina Dubroca <sd(a)queasysnail.net> xfrm: fix offloading of cross-family tunnels Sabrina Dubroca <sd(a)queasysnail.net> xfrm: xfrm_alloc_spi shouldn't use 0 as SPI Leon Hwang <leon.hwang(a)linux.dev> selftests/bpf: Skip timer cases when bpf_timer is not supported Leon Hwang <leon.hwang(a)linux.dev> bpf: Reject bpf_timer for PREEMPT_RT Geert Uytterhoeven <geert+renesas(a)glider.be> can: rcar_can: rcar_can_resume(): fix s2ram with PSCI James Guan <guan_yufei(a)163.com> wifi: virt_wifi: Fix page fault on connect Yifan Zhang <yifan1.zhang(a)amd.com> amd/amdkfd: correct mem limit calculation for small APUs Eric Huang <jinhuieric.huang(a)amd.com> drm/amdkfd: fix p2p links bug in topology Trond Myklebust <trond.myklebust(a)hammerspace.com> NFSv4.2: Protect copy offload and clone against 'eof page pollution' Trond Myklebust <trond.myklebust(a)hammerspace.com> NFS: Protect against 'eof page pollution' Mark Harmstone <mark(a)harmstone.com> btrfs: don't allow adding block device of less than 1 MB Xing Guo <higuoxing(a)gmail.com> selftests/fs/mount-notify: Fix compilation failure. Jiri Olsa <olsajiri(a)gmail.com> bpf: Check the helper function is valid in get_helper_proto Stefan Metzmacher <metze(a)samba.org> smb: server: use disable_work_sync in transport_rdma.c Stefan Metzmacher <metze(a)samba.org> smb: server: don't use delayed_work for post_recv_credits_work Christian Loehle <christian.loehle(a)arm.com> cpufreq: Initialize cpufreq-based invariance before subsys Jihed Chaibi <jihed.chaibi.dev(a)gmail.com> ARM: dts: kirkwood: Fix sound DAI cells for OpenRD clients Peng Fan <peng.fan(a)nxp.com> arm64: dts: imx8mp: Correct thermal sensor index Peng Fan <peng.fan(a)nxp.com> firmware: imx: Add stub functions for SCMI CPU API Peng Fan <peng.fan(a)nxp.com> firmware: imx: Add stub functions for SCMI LMM API Peng Fan <peng.fan(a)nxp.com> firmware: imx: Add stub functions for SCMI MISC API Jimmy Hon <honyuenkwun(a)gmail.com> arm64: dts: rockchip: Fix the headphone detection on the orangepi 5 Basavaraj Natikar <Basavaraj.Natikar(a)amd.com> HID: amd_sfh: Add sync across amd sfh work functions Sébastien Szymanski <sebastien.szymanski(a)armadeus.com> HID: cp2112: fix setter callbacks return value Or Har-Toov <ohartoov(a)nvidia.com> IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions Aleksander Jan Bajkowski <olek2(a)wp.pl> net: sfp: add quirk for FLYPRO copper SFP+ module qaqland <anguoli(a)uniontech.com> ALSA: usb-audio: Add mute TLV for playback volumes on more devices Cryolitia PukNgae <cryolitia(a)uniontech.com> ALSA: usb-audio: move mixer_quirks' min_mute into common quirk Mario Limonciello (AMD) <superm1(a)kernel.org> gpiolib: acpi: Add quirk for ASUS ProArt PX13 noble.yang <noble.yang(a)comtrue-inc.com> ALSA: usb-audio: Add DSD support for Comtrue USB Audio device Antheas Kapenekakis <lkml(a)antheas.dev> platform/x86: oxpec: Add support for OneXPlayer X1 Mini Pro (Strix Point) Balamurugan C <balamurugan.c(a)intel.com> ASoC: Intel: sof_rt5682: Add HDMI-In capture with rt5682 support for PTL. Balamurugan C <balamurugan.c(a)intel.com> ASoC: Intel: soc-acpi: Add entry for HDMI_In capture support in PTL match table Balamurugan C <balamurugan.c(a)intel.com> ASoC: Intel: soc-acpi: Add entry for sof_es8336 in PTL match table. Heikki Krogerus <heikki.krogerus(a)linux.intel.com> i2c: designware: Add quirk for Intel Xe Benoît Monin <benoit.monin(a)bootlin.com> mmc: sdhci-cadence: add Mobileye eyeQ support Louis-Alexis Eyraud <louisalexis.eyraud(a)collabora.com> drm/panfrost: Add support for Mali on the MT8370 SoC Louis-Alexis Eyraud <louisalexis.eyraud(a)collabora.com> drm/panfrost: Commonize Mediatek power domain array definitions Louis-Alexis Eyraud <louisalexis.eyraud(a)collabora.com> drm/panfrost: Drop duplicated Mediatek supplies arrays Chris Morgan <macromorgan(a)hotmail.com> net: sfp: add quirk for Potron SFP+ XGSPON ONU Stick Marc Kleine-Budde <mkl(a)pengutronix.de> net: fec: rename struct fec_devinfo fec_imx6x_info -> fec_imx6sx_info Jiayi Li <lijiayi(a)kylinos.cn> usb: core: Add 0x prefix to quirks debug output Takashi Iwai <tiwai(a)suse.de> ALSA: usb-audio: Fix build with CONFIG_INPUT=n Stefan Binding <sbinding(a)opensource.cirrus.com> ALSA: hda/realtek: Add support for ASUS NUC using CS35L41 HDA Chen Ni <nichen(a)iscas.ac.cn> ALSA: usb-audio: Convert comma to semicolon Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: specify that Apple Touch Bar is direct Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: take cls->maxcontacts into account for Apple Touch Bar even without a HID_DG_CONTACTMAX field Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: support getting the tip state from HID_DG_TOUCH fields in Apple Touch Bar Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: Get the contact ID from HID_DG_TRANSDUCER_INDEX fields in case of Apple Touch Bar Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5 Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Simplify NULL comparison in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Avoid multiple assignments in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Drop unnecessary parentheses in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Fix block comments in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Fix whitespace & blank line issues in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Fix code alignment in mixer_quirks Takashi Sakamoto <o-takashi(a)sakamocchi.jp> firewire: core: fix overlooked update of subsystem ABI version Alok Tiwari <alok.a.tiwari(a)oracle.com> scsi: ufs: mcq: Fix memory allocation checks for SQE and CQE ------------- Diffstat: Documentation/admin-guide/laptops/lg-laptop.rst | 4 +- Makefile | 4 +- .../dts/intel/socfpga/socfpga_cyclone5_sodia.dts | 6 +- .../boot/dts/marvell/kirkwood-openrd-client.dts | 2 +- arch/arm64/boot/dts/freescale/imx8mp.dtsi | 4 +- arch/arm64/boot/dts/marvell/cn9130-cf.dtsi | 7 +- arch/arm64/boot/dts/marvell/cn9131-cf-solidwan.dts | 6 +- arch/arm64/boot/dts/marvell/cn9132-clearfog.dts | 22 +- arch/arm64/boot/dts/marvell/cn9132-sr-cex7.dtsi | 8 + .../boot/dts/rockchip/rk3588s-orangepi-5.dtsi | 3 +- arch/riscv/include/asm/pgtable.h | 17 + arch/x86/Kconfig | 2 +- arch/x86/include/asm/topology.h | 10 + arch/x86/kernel/cpu/topology.c | 13 + drivers/cpufreq/cpufreq.c | 20 +- drivers/firewire/core-cdev.c | 2 +- drivers/gpio/gpio-regmap.c | 2 +- drivers/gpio/gpiolib-acpi-quirks.c | 14 + drivers/gpio/gpiolib.c | 21 +- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 44 +- drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 3 +- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 12 +- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 7 + drivers/gpu/drm/amd/display/dc/dc.h | 1 - .../drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c | 6 +- .../drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c | 6 +- drivers/gpu/drm/ast/ast_dp.c | 2 +- drivers/gpu/drm/gma500/oaktrail_hdmi.c | 2 +- drivers/gpu/drm/i915/display/intel_ddi.c | 5 +- drivers/gpu/drm/panfrost/panfrost_drv.c | 61 ++- drivers/gpu/drm/panthor/panthor_sched.c | 8 +- drivers/gpu/drm/xe/abi/guc_actions_abi.h | 5 - drivers/gpu/drm/xe/abi/guc_klvs_abi.h | 40 -- drivers/gpu/drm/xe/xe_bo_evict.c | 4 +- drivers/gpu/drm/xe/xe_configfs.c | 2 +- drivers/gpu/drm/xe/xe_device_sysfs.c | 2 +- drivers/gpu/drm/xe/xe_gt.c | 3 +- drivers/gpu/drm/xe/xe_guc.c | 62 +-- drivers/gpu/drm/xe/xe_guc.h | 1 - drivers/gpu/drm/xe/xe_guc_submit.c | 87 +--- drivers/gpu/drm/xe/xe_guc_submit.h | 2 - drivers/gpu/drm/xe/xe_uc.c | 4 - drivers/hid/amd-sfh-hid/amd_sfh_client.c | 12 +- drivers/hid/amd-sfh-hid/amd_sfh_common.h | 3 + drivers/hid/amd-sfh-hid/amd_sfh_pcie.c | 4 + drivers/hid/hid-asus.c | 3 + drivers/hid/hid-cp2112.c | 10 +- drivers/hid/hid-multitouch.c | 45 +- .../intel-thc-hid/intel-quickspi/pci-quickspi.c | 2 + .../intel-thc-hid/intel-quickspi/quickspi-dev.h | 2 + drivers/i2c/busses/i2c-designware-platdrv.c | 7 +- drivers/infiniband/hw/mlx5/devx.c | 1 + drivers/iommu/iommufd/eventq.c | 9 +- drivers/iommu/iommufd/main.c | 35 +- drivers/mmc/host/sdhci-cadence.c | 11 + drivers/net/can/rcar/rcar_can.c | 8 +- drivers/net/can/spi/hi311x.c | 1 + drivers/net/can/sun4i_can.c | 1 + drivers/net/can/usb/etas_es58x/es58x_core.c | 3 +- drivers/net/can/usb/mcba_usb.c | 1 + drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 +- drivers/net/dsa/lantiq_gswip.c | 21 +- drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 2 +- drivers/net/ethernet/freescale/fec_main.c | 4 +- drivers/net/ethernet/intel/i40e/i40e.h | 3 +- drivers/net/ethernet/intel/i40e/i40e_main.c | 26 +- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 110 ++-- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h | 3 +- drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 3 +- .../net/ethernet/marvell/octeontx2/nic/otx2_tc.c | 2 +- drivers/net/ethernet/mellanox/mlx5/core/en_stats.c | 1 + drivers/net/ethernet/mellanox/mlx5/core/fs_core.c | 2 +- drivers/net/ethernet/mellanox/mlx5/core/fs_core.h | 1 + .../net/ethernet/mellanox/mlx5/core/fs_counters.c | 25 +- .../mellanox/mlx5/core/steering/hws/action.c | 7 +- .../mellanox/mlx5/core/steering/hws/fs_hws.c | 18 +- .../mellanox/mlx5/core/steering/hws/fs_hws_pools.c | 8 +- .../mellanox/mlx5/core/steering/hws/mlx5hws.h | 7 +- drivers/net/phy/bcm-phy-ptp.c | 6 +- drivers/net/phy/sfp.c | 24 +- drivers/net/tun.c | 3 + drivers/net/wireless/intel/iwlwifi/pcie/tx.c | 3 +- drivers/net/wireless/virtual/virt_wifi.c | 4 +- drivers/pinctrl/mediatek/pinctrl-airoha.c | 31 +- drivers/platform/x86/lg-laptop.c | 34 +- drivers/platform/x86/oxpec.c | 7 + drivers/spi/spi-cadence-quadspi.c | 90 +++- drivers/ufs/core/ufs-mcq.c | 4 +- drivers/usb/core/quirks.c | 2 +- drivers/vhost/net.c | 33 +- drivers/video/fbdev/core/fbcon.c | 13 +- fs/afs/server.c | 3 +- fs/btrfs/volumes.c | 5 + fs/hugetlbfs/inode.c | 10 +- fs/netfs/buffered_read.c | 10 +- fs/netfs/direct_read.c | 7 +- fs/netfs/direct_write.c | 6 +- fs/netfs/internal.h | 1 + fs/netfs/objects.c | 30 +- fs/netfs/read_pgpriv2.c | 2 +- fs/netfs/read_single.c | 2 +- fs/netfs/write_issue.c | 3 +- fs/nfs/file.c | 33 ++ fs/nfs/inode.c | 9 +- fs/nfs/internal.h | 2 + fs/nfs/nfs42proc.c | 33 +- fs/nfs/nfstrace.h | 1 + fs/proc/task_mmu.c | 3 + fs/smb/client/smb2inode.c | 2 +- fs/smb/server/transport_rdma.c | 22 +- include/crypto/if_alg.h | 2 +- include/linux/firmware/imx/sm.h | 47 ++ include/linux/mlx5/fs.h | 2 + include/net/bluetooth/hci_core.h | 21 + kernel/bpf/core.c | 5 +- kernel/bpf/verifier.c | 6 +- kernel/fork.c | 2 +- kernel/futex/requeue.c | 6 +- kernel/sched/ext_idle.c | 52 +- kernel/sched/ext_idle.h | 7 - kernel/trace/fgraph.c | 12 + kernel/trace/fprobe.c | 7 +- kernel/trace/trace_dynevent.c | 4 + kernel/trace/trace_osnoise.c | 3 +- kernel/vhost_task.c | 3 +- mm/damon/sysfs.c | 4 +- mm/kmsan/core.c | 10 +- mm/kmsan/kmsan_test.c | 16 + net/bluetooth/hci_event.c | 30 +- net/bluetooth/hci_sync.c | 7 + net/bluetooth/mgmt.c | 259 +++++++--- net/bluetooth/mgmt_util.c | 46 ++ net/bluetooth/mgmt_util.h | 3 + net/core/skbuff.c | 2 +- net/ipv4/nexthop.c | 7 + net/smc/smc_loopback.c | 14 +- net/xfrm/xfrm_device.c | 2 +- net/xfrm/xfrm_state.c | 3 + sound/pci/hda/patch_realtek.c | 11 + sound/soc/intel/boards/sof_es8336.c | 10 + sound/soc/intel/boards/sof_rt5682.c | 7 + sound/soc/intel/common/soc-acpi-intel-ptl-match.c | 32 ++ sound/usb/mixer_quirks.c | 571 +++++++++++++++------ sound/usb/quirks.c | 24 +- sound/usb/usbaudio.h | 4 + .../testing/selftests/bpf/prog_tests/free_timer.c | 4 + tools/testing/selftests/bpf/prog_tests/timer.c | 4 + .../testing/selftests/bpf/prog_tests/timer_crash.c | 4 + .../selftests/bpf/prog_tests/timer_lockup.c | 4 + tools/testing/selftests/bpf/prog_tests/timer_mim.c | 4 + .../filesystems/mount-notify/mount-notify_test.c | 17 +- .../mount-notify/mount-notify_test_ns.c | 18 +- tools/testing/selftests/net/fib_nexthops.sh | 12 +- 153 files changed, 1833 insertions(+), 852 deletions(-)

1 month, 4 weeks

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KVM: arm64: Regression in at least linux-6.1.y tree with recent FPSIMD/SVE/SME fix

by Kenneth Van Alstyne

Greetings: Sending via plain text email -- apologies if you receive this twice. If this isn't the process for reporting a regression in a LTS kernel per https://www.kernel.org/doc/html/latest/admin-guide/reporting-issues.html, I'm happy to follow another process. Kernel 6.1.149 introduced a regression, at least on our ARM Cortex A57-based platforms, via commit 8f4dc4e54eed4bebb18390305eb1f721c00457e1 in arch/arm64/kernel/fpsimd.c where booting KVM VMs eventually leads to a spinlock recursion BUG and crash of the box. Reverting that commit via the below reverts to the old (working) behavior: diff --git a/arch/arm64/kernel/fpsimd.c b/arch/arm64/kernel/fpsimd.c index 837d1937300a57..bc42163a7fd1f0 100644 --- a/arch/arm64/kernel/fpsimd.c +++ b/arch/arm64/kernel/fpsimd.c @@ -1851,10 +1851,10 @@ void fpsimd_save_and_flush_cpu_state(void) if (!system_supports_fpsimd()) return; WARN_ON(preemptible()); - get_cpu_fpsimd_context(); + __get_cpu_fpsimd_context(); fpsimd_save(); fpsimd_flush_cpu_state(); - put_cpu_fpsimd_context(); + __put_cpu_fpsimd_context(); } #ifdef CONFIG_KERNEL_MODE_NEON It's not entirely clear to me if this is specific to our firmware, specific to ARM Cortex A57, or more systemic as we lack sufficiently differentiated hardware to know. I've tested on the latest 6.1 kernel in addition to the one in the log below and have also tested a number of firmware versions available for these boxes. Steps to reproduce: Boot VM in qemu-system-aarch64 with "-accel kvm" and "-cpu host" flags set -- no other arguments seem to matter Generate CPU load in VM Kernel log: [sjc1] root@si-compute-kvm-e0fff70016b4:/# [ 805.905413] BUG: spinlock recursion on CPU#7, CPU 3/KVM/57616 [ 805.905452] lock: 0xffff3045ef850240, .magic: dead4ead, .owner: CPU 3/KVM/57616, .owner_cpu: 7 [ 805.905477] CPU: 7 PID: 57616 Comm: CPU 3/KVM Tainted: G O 6.1.152 #1 [ 805.905495] Hardware name: SoftIron SoftIron Platform Mainboard/SoftIron Platform Mainboard, BIOS 1.31 May 11 2023 [ 805.905516] Call trace: [ 805.905524] dump_backtrace+0xe4/0x110 [ 805.905538] show_stack+0x20/0x30 [ 805.905548] dump_stack_lvl+0x6c/0x88 [ 805.905561] dump_stack+0x18/0x34 [ 805.905571] spin_dump+0x98/0xac [ 805.905583] do_raw_spin_lock+0x70/0x128 [ 805.905596] _raw_spin_lock+0x18/0x28 [ 805.905607] raw_spin_rq_lock_nested+0x18/0x28 [ 805.905620] update_blocked_averages+0x70/0x550 [ 805.905634] run_rebalance_domains+0x50/0x70 [ 805.905645] handle_softirqs+0x198/0x328 [ 805.905659] __do_softirq+0x1c/0x28 [ 805.905669] ____do_softirq+0x18/0x28 [ 805.905680] call_on_irq_stack+0x30/0x48 [ 805.905691] do_softirq_own_stack+0x24/0x30 [ 805.905703] do_softirq+0x74/0x90 [ 805.905714] __local_bh_enable_ip+0x64/0x80 [ 805.905727] fpsimd_save_and_flush_cpu_state+0x5c/0x68 [ 805.905740] kvm_arch_vcpu_put_fp+0x4c/0x88 [ 805.905752] kvm_arch_vcpu_put+0x28/0x88 [ 805.905764] kvm_sched_out+0x38/0x58 [ 805.905774] __schedule+0x55c/0x6c8 [ 805.905786] schedule+0x60/0xa8 [ 805.905796] kvm_vcpu_block+0x5c/0x90 [ 805.905807] kvm_vcpu_halt+0x440/0x468 [ 805.905818] kvm_vcpu_wfi+0x3c/0x70 [ 805.905828] kvm_handle_wfx+0x18c/0x1f0 [ 805.905840] handle_exit+0xb8/0x148 [ 805.905851] kvm_arch_vcpu_ioctl_run+0x6c4/0x7b0 [ 805.905863] kvm_vcpu_ioctl+0x1d0/0x8b8 [ 805.905874] __arm64_sys_ioctl+0x9c/0xe0 [ 805.905886] invoke_syscall+0x78/0x108 [ 805.905899] el0_svc_common.constprop.3+0xb4/0xf8 [ 805.905912] do_el0_svc+0x78/0x88 [ 805.905922] el0_svc+0x48/0x78 [ 805.905932] el0t_64_sync_handler+0x40/0xc0 [ 805.905943] el0t_64_sync+0x18c/0x190 [ 806.048300] hrtimer: interrupt took 2976 ns [ 826.924613] rcu: INFO: rcu_sched detected stalls on CPUs/tasks: SoC 0 became not ready SoC 0 became ready Thanks, -- Kenneth Van Alstyne, Jr.

1 month, 4 weeks

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[PATCH 6.6 00/91] 6.6.109-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 6.6.109 release. There are 91 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Thu, 02 Oct 2025 14:37:59 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.6.109-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.6.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 6.6.109-rc1 David Laight <David.Laight(a)ACULAB.COM> minmax.h: remove some #defines that are only expanded once David Laight <David.Laight(a)ACULAB.COM> minmax.h: simplify the variants of clamp() David Laight <David.Laight(a)ACULAB.COM> minmax.h: move all the clamp() definitions after the min/max() ones David Laight <David.Laight(a)ACULAB.COM> minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp() David Laight <David.Laight(a)ACULAB.COM> minmax.h: reduce the #define expansion of min(), max() and clamp() David Laight <David.Laight(a)ACULAB.COM> minmax.h: update some comments David Laight <David.Laight(a)ACULAB.COM> minmax.h: add whitespace around operators and after commas Linus Torvalds <torvalds(a)linux-foundation.org> minmax: fix up min3() and max3() too Linus Torvalds <torvalds(a)linux-foundation.org> minmax: improve macro expansion and type checking Linus Torvalds <torvalds(a)linux-foundation.org> minmax: don't use max() in situations that want a C constant expression Linus Torvalds <torvalds(a)linux-foundation.org> minmax: simplify min()/max()/clamp() implementation Linus Torvalds <torvalds(a)linux-foundation.org> minmax: make generic MIN() and MAX() macros available everywhere Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add validation for ring_len param Justin Bronder <jsbronder(a)cold-front.org> i40e: increase max descriptors for XL710 Nirmoy Das <nirmoyd(a)nvidia.com> drm/ast: Use msleep instead of mdelay for edid read Hans de Goede <hansg(a)kernel.org> gpiolib: Extend software-node support to support secondary software-nodes Jan Kara <jack(a)suse.cz> loop: Avoid updating block size under exclusive owner David Hildenbrand <david(a)redhat.com> mm/migrate_device: don't add folio to be freed to LRU in migrate_device_finalize() Kefeng Wang <wangkefeng.wang(a)huawei.com> mm: migrate_device: use more folio in migrate_device_finalize() Florian Fainelli <florian.fainelli(a)broadcom.com> ARM: bcm: Select ARM_GIC_V3 for ARCH_BRCMSTB Nathan Chancellor <nathan(a)kernel.org> s390/cpum_cf: Fix uninitialized warning after backport of ce971233242b Thomas Zimmermann <tzimmermann(a)suse.de> fbcon: Fix OOB access in font allocation Samasth Norway Ananda <samasth.norway.ananda(a)oracle.com> fbcon: fix integer overflow in fbcon_do_set_font Jinjiang Tu <tujinjiang(a)huawei.com> mm/hugetlb: fix folio is still mapped when deleted Eric Biggers <ebiggers(a)kernel.org> kmsan: fix out-of-bounds access to shadow memory Zhen Ni <zhen.ni(a)easystack.cn> afs: Fix potential null pointer dereference in afs_put_server Nobuhiro Iwamatsu <iwamatsu(a)nigauri.org> ARM: dts: socfpga: sodia: Fix mdio bus probe and PHY address Masami Hiramatsu (Google) <mhiramat(a)kernel.org> tracing: dynevent: Add a missing lockdown check on dynevent Eric Biggers <ebiggers(a)kernel.org> crypto: af_alg - Fix incorrect boolean values in af_alg_ctx Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: improve VF MAC filters accounting Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add mask to apply valid bits for itr_idx Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add max boundary check for VF filters Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix validation of VF state in get resources Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix input validation logic for action_meta Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix idx validation in config queues msg Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix idx validation in i40e_validate_queue_map Amit Chaudhari <amitchaudhari(a)mac.com> HID: asus: add support for missing PX series fn keys Sang-Heon Jeon <ekffu200098(a)gmail.com> smb: client: fix wrong index reference in smb2_compound_op() Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> futex: Prevent use-after-free during requeue-PI Zabelin Nikita <n.zabelin(a)mt-integration.ru> drm/gma500: Fix null dereference in hdmi teardown Dan Carpenter <dan.carpenter(a)linaro.org> octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: lantiq_gswip: suppress -EINVAL errors for bridge FDB entries added to the CPU port Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup() Martin Schiller <ms(a)dev.tdt.de> net: dsa: lantiq_gswip: do also enable or disable cpu port Ido Schimmel <idosch(a)nvidia.com> selftests: fib_nexthops: Fix creation of non-FDB nexthops Ido Schimmel <idosch(a)nvidia.com> nexthop: Forbid FDB status change while nexthop is in a group Jason Baron <jbaron(a)akamai.com> net: allow alloc_skb_with_frags() to use MAX_SKB_FRAGS Alok Tiwari <alok.a.tiwari(a)oracle.com> bnxt_en: correct offset handling for IPv6 destination address Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> vhost: Take a reference on the task in struct vhost_task. Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: hci_sync: Fix hci_resume_advertising_sync Petr Malat <oss(a)malat.biz> ethernet: rvu-af: Remove slash from the driver name Stéphane Grosjean <stephane.grosjean(a)hms-networks.com> can: peak_usb: fix shift-out-of-bounds issue Vincent Mailhol <mailhol(a)kernel.org> can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: hi311x: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow Sabrina Dubroca <sd(a)queasysnail.net> xfrm: xfrm_alloc_spi shouldn't use 0 as SPI Leon Hwang <leon.hwang(a)linux.dev> bpf: Reject bpf_timer for PREEMPT_RT Geert Uytterhoeven <geert+renesas(a)glider.be> can: rcar_can: rcar_can_resume(): fix s2ram with PSCI James Guan <guan_yufei(a)163.com> wifi: virt_wifi: Fix page fault on connect Stefan Metzmacher <metze(a)samba.org> smb: server: don't use delayed_work for post_recv_credits_work Christian Loehle <christian.loehle(a)arm.com> cpufreq: Initialize cpufreq-based invariance before subsys Jihed Chaibi <jihed.chaibi.dev(a)gmail.com> ARM: dts: kirkwood: Fix sound DAI cells for OpenRD clients Peng Fan <peng.fan(a)nxp.com> arm64: dts: imx8mp: Correct thermal sensor index Hugh Dickins <hughd(a)google.com> mm: folio_may_be_lru_cached() unless folio_test_large() Hugh Dickins <hughd(a)google.com> mm/gup: local lru_add_drain() to avoid lru_add_drain_all() Hugh Dickins <hughd(a)google.com> mm/gup: check ref_count instead of lru before migration Shivank Garg <shivankg(a)amd.com> mm: add folio_expected_ref_count() for reference count calculation David Hildenbrand <david(a)redhat.com> mm/gup: revert "mm: gup: fix infinite loop within __get_longterm_locked" Or Har-Toov <ohartoov(a)nvidia.com> IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions qaqland <anguoli(a)uniontech.com> ALSA: usb-audio: Add mute TLV for playback volumes on more devices Cryolitia PukNgae <cryolitia(a)uniontech.com> ALSA: usb-audio: move mixer_quirks' min_mute into common quirk noble.yang <noble.yang(a)comtrue-inc.com> ALSA: usb-audio: Add DSD support for Comtrue USB Audio device Heikki Krogerus <heikki.krogerus(a)linux.intel.com> i2c: designware: Add quirk for Intel Xe Benoît Monin <benoit.monin(a)bootlin.com> mmc: sdhci-cadence: add Mobileye eyeQ support Jiayi Li <lijiayi(a)kylinos.cn> usb: core: Add 0x prefix to quirks debug output Takashi Iwai <tiwai(a)suse.de> ALSA: usb-audio: Fix build with CONFIG_INPUT=n Chen Ni <nichen(a)iscas.ac.cn> ALSA: usb-audio: Convert comma to semicolon Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: specify that Apple Touch Bar is direct Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: take cls->maxcontacts into account for Apple Touch Bar even without a HID_DG_CONTACTMAX field Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: support getting the tip state from HID_DG_TOUCH fields in Apple Touch Bar Kerem Karabay <kekrby(a)gmail.com> HID: multitouch: Get the contact ID from HID_DG_TRANSDUCER_INDEX fields in case of Apple Touch Bar Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5 Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Simplify NULL comparison in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Avoid multiple assignments in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Drop unnecessary parentheses in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Fix block comments in mixer_quirks Takashi Sakamoto <o-takashi(a)sakamocchi.jp> firewire: core: fix overlooked update of subsystem ABI version Alok Tiwari <alok.a.tiwari(a)oracle.com> scsi: ufs: mcq: Fix memory allocation checks for SQE and CQE ------------- Diffstat: Makefile | 4 +- .../dts/intel/socfpga/socfpga_cyclone5_sodia.dts | 6 +- .../boot/dts/marvell/kirkwood-openrd-client.dts | 2 +- arch/arm/mach-bcm/Kconfig | 1 + arch/arm64/boot/dts/freescale/imx8mp.dtsi | 4 +- arch/s390/kernel/perf_cpum_cf.c | 4 +- arch/um/drivers/mconsole_user.c | 2 + drivers/block/loop.c | 40 ++- drivers/cpufreq/cpufreq.c | 20 +- drivers/edac/skx_common.h | 1 - drivers/firewire/core-cdev.c | 2 +- drivers/gpio/gpiolib.c | 19 +- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 + .../gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c | 2 + drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppevvmath.h | 14 +- .../drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 2 + .../gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c | 3 + .../gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c | 3 + drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c | 2 +- drivers/gpu/drm/ast/ast_dp.c | 2 +- drivers/gpu/drm/gma500/oaktrail_hdmi.c | 2 +- drivers/gpu/drm/radeon/evergreen_cs.c | 2 + drivers/hid/hid-asus.c | 3 + drivers/hid/hid-multitouch.c | 45 +++- drivers/hwmon/adt7475.c | 24 +- drivers/i2c/busses/i2c-designware-platdrv.c | 7 +- drivers/infiniband/hw/mlx5/devx.c | 1 + drivers/input/touchscreen/cyttsp4_core.c | 2 +- drivers/irqchip/irq-sun6i-r.c | 2 +- drivers/media/dvb-frontends/stv0367_priv.h | 3 + drivers/mmc/host/sdhci-cadence.c | 11 + drivers/net/can/rcar/rcar_can.c | 8 +- drivers/net/can/spi/hi311x.c | 1 + drivers/net/can/sun4i_can.c | 1 + drivers/net/can/usb/etas_es58x/es58x_core.c | 3 +- drivers/net/can/usb/etas_es58x/es58x_devlink.c | 2 +- drivers/net/can/usb/mcba_usb.c | 1 + drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 +- drivers/net/dsa/lantiq_gswip.c | 41 +-- drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 2 +- drivers/net/ethernet/intel/i40e/i40e.h | 4 +- drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 25 +- drivers/net/ethernet/intel/i40e/i40e_main.c | 26 +- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 110 ++++---- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h | 3 +- drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 3 +- .../net/ethernet/marvell/octeontx2/nic/otx2_tc.c | 2 +- drivers/net/fjes/fjes_main.c | 4 +- drivers/net/wireless/virtual/virt_wifi.c | 4 +- drivers/nfc/pn544/i2c.c | 2 - drivers/platform/x86/sony-laptop.c | 1 - drivers/scsi/isci/init.c | 6 +- .../pci/hive_isp_css_include/math_support.h | 5 - drivers/ufs/core/ufs-mcq.c | 4 +- drivers/usb/core/quirks.c | 2 +- drivers/video/fbdev/core/fbcon.c | 13 +- fs/afs/server.c | 3 +- fs/btrfs/tree-checker.c | 2 +- fs/hugetlbfs/inode.c | 10 +- fs/smb/client/smb2inode.c | 2 +- fs/smb/server/transport_rdma.c | 18 +- include/crypto/if_alg.h | 2 +- include/linux/compiler.h | 9 + include/linux/minmax.h | 234 +++++++++------- include/linux/mm.h | 55 ++++ include/linux/swap.h | 10 + include/net/bluetooth/hci_core.h | 21 ++ kernel/bpf/verifier.c | 4 + kernel/futex/requeue.c | 6 +- kernel/trace/preemptirq_delay_test.c | 2 - kernel/trace/trace_dynevent.c | 4 + kernel/vhost_task.c | 3 +- lib/btree.c | 1 - lib/decompress_unlzma.c | 2 + lib/vsprintf.c | 2 +- mm/gup.c | 28 +- mm/kmsan/core.c | 10 +- mm/kmsan/kmsan_test.c | 16 ++ mm/migrate_device.c | 42 ++- mm/mlock.c | 6 +- mm/swap.c | 4 +- mm/zsmalloc.c | 2 - net/bluetooth/hci_event.c | 26 +- net/bluetooth/hci_sync.c | 7 + net/core/skbuff.c | 2 +- net/ipv4/nexthop.c | 7 + net/xfrm/xfrm_state.c | 3 + sound/usb/mixer_quirks.c | 295 +++++++++++++++++++-- sound/usb/quirks.c | 24 +- sound/usb/usbaudio.h | 4 + tools/testing/selftests/mm/mremap_test.c | 2 + tools/testing/selftests/net/fib_nexthops.sh | 12 +- tools/testing/selftests/seccomp/seccomp_bpf.c | 2 + 93 files changed, 1031 insertions(+), 363 deletions(-)

1 month, 4 weeks

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Inquiry: Availability for New Project Estimate

by Chester

1 month, 4 weeks

1
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[PATCH] nvme-tcp: fix usage of page_frag_cache

by Dmitry Bogdanov

nvme uses page_frag_cache to preallocate PDU for each preallocated request of block device. Block devices are created in parallel threads, consequently page_frag_cache is used in not thread-safe manner. That leads to incorrect refcounting of backstore pages and premature free. That can be catched by !sendpage_ok inside network stack: WARNING: CPU: 7 PID: 467 at ../net/core/skbuff.c:6931 skb_splice_from_iter+0xfa/0x310. tcp_sendmsg_locked+0x782/0xce0 tcp_sendmsg+0x27/0x40 sock_sendmsg+0x8b/0xa0 nvme_tcp_try_send_cmd_pdu+0x149/0x2a0 Then random panic may occur. Fix that by serializing the usage of page_frag_cache. Cc: stable(a)vger.kernel.org # 6.12 Fixes: 4e893ca81170 ("nvme_core: scan namespaces asynchronously") Signed-off-by: Dmitry Bogdanov <d.bogdanov(a)yadro.com> --- drivers/nvme/host/tcp.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c index 1413788ca7d52..823e07759e0d3 100644 --- a/drivers/nvme/host/tcp.c +++ b/drivers/nvme/host/tcp.c @@ -145,6 +145,7 @@ struct nvme_tcp_queue { struct mutex queue_lock; struct mutex send_mutex; + struct mutex pf_cache_lock; struct llist_head req_list; struct list_head send_list; @@ -556,9 +557,11 @@ static int nvme_tcp_init_request(struct blk_mq_tag_set *set, struct nvme_tcp_queue *queue = &ctrl->queues[queue_idx]; u8 hdgst = nvme_tcp_hdgst_len(queue); + mutex_lock(&queue->pf_cache_lock); req->pdu = page_frag_alloc(&queue->pf_cache, sizeof(struct nvme_tcp_cmd_pdu) + hdgst, GFP_KERNEL | __GFP_ZERO); + mutex_unlock(&queue->pf_cache_lock); if (!req->pdu) return -ENOMEM; @@ -1420,9 +1423,11 @@ static int nvme_tcp_alloc_async_req(struct nvme_tcp_ctrl *ctrl) struct nvme_tcp_request *async = &ctrl->async_req; u8 hdgst = nvme_tcp_hdgst_len(queue); + mutex_lock(&queue->pf_cache_lock); async->pdu = page_frag_alloc(&queue->pf_cache, sizeof(struct nvme_tcp_cmd_pdu) + hdgst, GFP_KERNEL | __GFP_ZERO); + mutex_unlock(&queue->pf_cache_lock); if (!async->pdu) return -ENOMEM; @@ -1450,6 +1455,7 @@ static void nvme_tcp_free_queue(struct nvme_ctrl *nctrl, int qid) kfree(queue->pdu); mutex_destroy(&queue->send_mutex); mutex_destroy(&queue->queue_lock); + mutex_destroy(&queue->pf_cache_lock); } static int nvme_tcp_init_connection(struct nvme_tcp_queue *queue) @@ -1772,6 +1778,7 @@ static int nvme_tcp_alloc_queue(struct nvme_ctrl *nctrl, int qid, INIT_LIST_HEAD(&queue->send_list); mutex_init(&queue->send_mutex); INIT_WORK(&queue->io_work, nvme_tcp_io_work); + mutex_init(&queue->pf_cache_lock); if (qid > 0) queue->cmnd_capsule_len = nctrl->ioccsz * 16; @@ -1903,6 +1910,7 @@ static int nvme_tcp_alloc_queue(struct nvme_ctrl *nctrl, int qid, err_destroy_mutex: mutex_destroy(&queue->send_mutex); mutex_destroy(&queue->queue_lock); + mutex_destroy(&queue->pf_cache_lock); return ret; } -- 2.25.1

1 month, 4 weeks

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[PATCH 5.4 00/81] 5.4.300-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 5.4.300 release. There are 81 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Thu, 02 Oct 2025 14:37:59 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.4.300-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 5.4.300-rc1 Jinjiang Tu <tujinjiang(a)huawei.com> mm/hugetlb: fix folio is still mapped when deleted Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add mask to apply valid bits for itr_idx Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix validation of VF state in get resources Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix idx validation in config queues msg Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add validation for ring_len param Justin Bronder <jsbronder(a)cold-front.org> i40e: increase max descriptors for XL710 David Hildenbrand <david(a)redhat.com> mm/migrate_device: don't add folio to be freed to LRU in migrate_device_finalize() Thomas Zimmermann <tzimmermann(a)suse.de> fbcon: Fix OOB access in font allocation Samasth Norway Ananda <samasth.norway.ananda(a)oracle.com> fbcon: fix integer overflow in fbcon_do_set_font Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add max boundary check for VF filters Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix input validation logic for action_meta Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix idx validation in i40e_validate_queue_map Zabelin Nikita <n.zabelin(a)mt-integration.ru> drm/gma500: Fix null dereference in hdmi teardown Stéphane Grosjean <stephane.grosjean(a)hms-networks.com> can: peak_usb: fix shift-out-of-bounds issue Vincent Mailhol <mailhol(a)kernel.org> can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: hi311x: populate ndo_change_mtu() to prevent buffer overflow Geert Uytterhoeven <geert+renesas(a)glider.be> can: rcar_can: rcar_can_resume(): fix s2ram with PSCI Or Har-Toov <ohartoov(a)nvidia.com> IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions Jiayi Li <lijiayi(a)kylinos.cn> usb: core: Add 0x prefix to quirks debug output Takashi Iwai <tiwai(a)suse.de> ALSA: usb-audio: Fix build with CONFIG_INPUT=n Chen Ni <nichen(a)iscas.ac.cn> ALSA: usb-audio: Convert comma to semicolon Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5 Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Simplify NULL comparison in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Avoid multiple assignments in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Fix block comments in mixer_quirks Maciej S. Szmigiero <maciej.szmigiero(a)oracle.com> KVM: SVM: Sync TPR from LAPIC into VMCB::V_TPR even if AVIC is active Hans de Goede <hansg(a)kernel.org> net: rfkill: gpio: Fix crash due to dereferencering uninitialized pointer Philipp Zabel <p.zabel(a)pengutronix.de> net: rfkill: gpio: add DT support Hugo Villeneuve <hvilleneuve(a)dimonoff.com> serial: sc16is7xx: fix bug in flow control levels init Alan Stern <stern(a)rowland.harvard.edu> USB: gadget: dummy-hcd: Fix locking bug in RT-enabled kernels Jakob Koschel <jakobkoschel(a)gmail.com> usb: gadget: dummy_hcd: remove usage of list iterator past the loop body Colin Ian King <colin.i.king(a)gmail.com> ASoC: SOF: Intel: hda-stream: Fix incorrect variable used in error message Charles Keepax <ckeepax(a)opensource.cirrus.com> ASoC: wm8974: Correct PLL rate rounding Charles Keepax <ckeepax(a)opensource.cirrus.com> ASoC: wm8940: Correct typo in control name Håkon Bugge <haakon.bugge(a)oracle.com> rds: ib: Increment i_fastreg_wrs before bailing out Thomas Fourier <fourier.thomas(a)gmail.com> mmc: mvsdio: Fix dma_unmap_sg() nents value H. Nikolaus Schaller <hns(a)goldelico.com> power: supply: bq27xxx: restrict no-battery detection to bq27000 H. Nikolaus Schaller <hns(a)goldelico.com> power: supply: bq27xxx: fix error return in case of no bq27000 hdq battery Nathan Chancellor <nathan(a)kernel.org> nilfs2: fix CFI failure when accessing /sys/fs/nilfs2/features/* Duoming Zhou <duoming(a)zju.edu.cn> cnic: Fix use-after-free bugs in cnic_delete_task Alexey Nepomnyashih <sdl(a)nppct.ru> net: liquidio: fix overflow in octeon_init_instr_queue() Tariq Toukan <tariqt(a)nvidia.com> Revert "net/mlx5e: Update and set Xon/Xoff upon port speed set" Kuniyuki Iwashima <kuniyu(a)google.com> tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect(). Maciej Fijalkowski <maciej.fijalkowski(a)intel.com> i40e: remove redundant memory barrier when cleaning Tx descs Yeounsu Moon <yyyynoom(a)gmail.com> net: natsemi: fix `rx_dropped` double accounting on `netif_rx()` failure Chen Ridong <chenridong(a)huawei.com> cgroup: split cgroup_destroy_wq into 3 workqueues Geert Uytterhoeven <geert+renesas(a)glider.be> pcmcia: omap_cf: Mark driver struct with __refdata to prevent section mismatch Liao Yuanhong <liaoyuanhong(a)vivo.com> wifi: mac80211: fix incorrect type for ret Takashi Sakamoto <o-takashi(a)sakamocchi.jp> ALSA: firewire-motu: drop EPOLLOUT from poll return values as write is not supported Miaohe Lin <linmiaohe(a)huawei.com> mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory Bjorn Andersson <bjorn.andersson(a)oss.qualcomm.com> soc: qcom: mdt_loader: Deal with zero e_shentsize Johan Hovold <johan(a)kernel.org> phy: ti-pipe3: fix device leak at unbind Stephan Gerhold <stephan.gerhold(a)linaro.org> dmaengine: qcom: bam_dma: Fix DT error handling for num-channels/ees Anders Roxell <anders.roxell(a)linaro.org> dmaengine: ti: edma: Fix memory allocation size for queue_priority_map Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> can: j1939: j1939_local_ecu_get(): undo increment when j1939_local_ecu_get() fails Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> can: j1939: j1939_sk_bind(): call j1939_priv_put() immediately when j1939_local_ecu_get() failed Michal Schmidt <mschmidt(a)redhat.com> i40e: fix IRQ freeing in i40e_vsi_request_irq_msix error path Nitesh Narayan Lal <nitesh(a)redhat.com> i40e: Use irq_update_affinity_hint() Thomas Gleixner <tglx(a)linutronix.de> genirq: Provide new interfaces for affinity hints Thomas Gleixner <tglx(a)linutronix.de> genirq: Export affinity setter for modules John Garry <john.garry(a)huawei.com> genirq/affinity: Add irq_update_affinity_desc() Kohei Enju <enjuk(a)amazon.com> igb: fix link test skipping when interface is admin down Stefan Wahren <wahrenst(a)gmx.net> net: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable() Fabio Porcedda <fabio.porcedda(a)gmail.com> USB: serial: option: add Telit Cinterion LE910C4-WWX new compositions Fabio Porcedda <fabio.porcedda(a)gmail.com> USB: serial: option: add Telit Cinterion FN990A w/audio compositions Fabian Vogt <fvogt(a)suse.de> tty: hvc_console: Call hvc_kick in hvc_write unconditionally Alexander Sverdlin <alexander.sverdlin(a)siemens.com> mtd: nand: raw: atmel: Respect tAR, tCLR in read setup timing Alexander Dahl <ada(a)thorsis.com> mtd: nand: raw: atmel: Fix comment in timings preparation Christophe Kerello <christophe.kerello(a)foss.st.com> mtd: rawnand: stm32_fmc2: avoid overlapping mappings on ECC buffer Wei Yang <richard.weiyang(a)gmail.com> mm/khugepaged: fix the address passed to notifier on testing young Miklos Szeredi <mszeredi(a)redhat.com> fuse: prevent overflow in copy_file_range return value Miklos Szeredi <mszeredi(a)redhat.com> fuse: check if copy_file_range() returns larger than requested size Christophe Kerello <christophe.kerello(a)foss.st.com> mtd: rawnand: stm32_fmc2: fix ECC overwrite Mark Tinguely <mark.tinguely(a)oracle.com> ocfs2: fix recursive semaphore deadlock in fiemap call Salah Triki <salah.triki(a)gmail.com> EDAC/altera: Delete an inappropriate dma_free_coherent() call Kuniyuki Iwashima <kuniyu(a)google.com> tcp_bpf: Call sk_msg_free() when tcp_bpf_send_verdict() fails to allocate psock->cork. Trond Myklebust <trond.myklebust(a)hammerspace.com> NFSv4: Don't clear capabilities that won't be reset Kuniyuki Iwashima <kuniyu(a)amazon.com> net: Fix null-ptr-deref by sock_lock_init_class_and_name() and rmmod. Mathias Nyman <mathias.nyman(a)linux.intel.com> usb: hub: Fix flushing of delayed work used for post resume purposes ------------- Diffstat: Makefile | 4 +- arch/x86/kvm/svm.c | 3 +- drivers/dma/qcom/bam_dma.c | 8 +- drivers/dma/ti/edma.c | 4 +- drivers/edac/altera_edac.c | 1 - drivers/gpu/drm/gma500/oaktrail_hdmi.c | 2 +- drivers/infiniband/hw/mlx5/devx.c | 1 + drivers/mmc/host/mvsdio.c | 2 +- drivers/mtd/nand/raw/atmel/nand-controller.c | 18 +- drivers/mtd/nand/raw/stm32_fmc2_nand.c | 45 ++-- drivers/net/can/rcar/rcar_can.c | 8 +- drivers/net/can/spi/hi311x.c | 1 + drivers/net/can/sun4i_can.c | 1 + drivers/net/can/usb/mcba_usb.c | 1 + drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 +- drivers/net/ethernet/broadcom/cnic.c | 3 +- .../net/ethernet/cavium/liquidio/request_manager.c | 2 +- drivers/net/ethernet/freescale/fec_main.c | 3 +- drivers/net/ethernet/intel/i40e/i40e.h | 1 + drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 25 +- drivers/net/ethernet/intel/i40e/i40e_main.c | 10 +- drivers/net/ethernet/intel/i40e/i40e_txrx.c | 3 - drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 46 +++- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h | 3 +- drivers/net/ethernet/intel/igb/igb_ethtool.c | 5 +- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 2 - drivers/net/ethernet/natsemi/ns83820.c | 13 +- drivers/pcmcia/omap_cf.c | 8 +- drivers/phy/ti/phy-ti-pipe3.c | 13 + drivers/power/supply/bq27xxx_battery.c | 4 +- drivers/soc/qcom/mdt_loader.c | 12 +- drivers/tty/hvc/hvc_console.c | 6 +- drivers/tty/serial/sc16is7xx.c | 13 +- drivers/usb/core/hub.c | 21 +- drivers/usb/core/hub.h | 1 + drivers/usb/core/quirks.c | 2 +- drivers/usb/gadget/udc/dummy_hcd.c | 25 +- drivers/usb/serial/option.c | 17 ++ drivers/video/fbdev/core/fbcon.c | 13 +- fs/fuse/file.c | 5 +- fs/hugetlbfs/inode.c | 14 +- fs/nfs/nfs4proc.c | 1 - fs/nilfs2/sysfs.c | 4 +- fs/nilfs2/sysfs.h | 8 +- fs/ocfs2/extent_map.c | 10 +- include/linux/interrupt.h | 96 ++++--- include/net/sock.h | 40 ++- kernel/cgroup/cgroup.c | 43 +++- kernel/irq/manage.c | 111 +++++++- mm/khugepaged.c | 2 +- mm/memory-failure.c | 7 +- mm/migrate.c | 12 +- net/can/j1939/bus.c | 5 +- net/can/j1939/socket.c | 3 + net/core/sock.c | 5 + net/ipv4/tcp.c | 5 + net/ipv4/tcp_bpf.c | 5 +- net/mac80211/driver-ops.h | 2 +- net/rds/ib_frmr.c | 20 +- net/rfkill/rfkill-gpio.c | 22 +- sound/firewire/motu/motu-hwdep.c | 2 +- sound/soc/codecs/wm8940.c | 2 +- sound/soc/codecs/wm8974.c | 8 +- sound/soc/sof/intel/hda-stream.c | 2 +- sound/usb/mixer_quirks.c | 279 ++++++++++++++++++++- 65 files changed, 829 insertions(+), 236 deletions(-)

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[PATCH 5.15 000/151] 5.15.194-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 5.15.194 release. There are 151 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Thu, 02 Oct 2025 14:37:59 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.15.194-r… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 5.15.194-rc1 Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add validation for ring_len param Justin Bronder <jsbronder(a)cold-front.org> i40e: increase max descriptors for XL710 Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix idx validation in config queues msg Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix validation of VF state in get resources Jinjiang Tu <tujinjiang(a)huawei.com> mm/hugetlb: fix folio is still mapped when deleted David Hildenbrand <david(a)redhat.com> mm/migrate_device: don't add folio to be freed to LRU in migrate_device_finalize() Kuniyuki Iwashima <kuniyu(a)google.com> af_unix: Don't leave consecutive consumed OOB skbs. Thomas Zimmermann <tzimmermann(a)suse.de> fbcon: Fix OOB access in font allocation Samasth Norway Ananda <samasth.norway.ananda(a)oracle.com> fbcon: fix integer overflow in fbcon_do_set_font Masami Hiramatsu (Google) <mhiramat(a)kernel.org> tracing: dynevent: Add a missing lockdown check on dynevent Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add mask to apply valid bits for itr_idx Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: add max boundary check for VF filters Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix input validation logic for action_meta Lukasz Czapnik <lukasz.czapnik(a)intel.com> i40e: fix idx validation in i40e_validate_queue_map Eric Biggers <ebiggers(a)kernel.org> crypto: af_alg - Fix incorrect boolean values in af_alg_ctx Herbert Xu <herbert(a)gondor.apana.org.au> crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg Zabelin Nikita <n.zabelin(a)mt-integration.ru> drm/gma500: Fix null dereference in hdmi teardown Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: lantiq_gswip: suppress -EINVAL errors for bridge FDB entries added to the CPU port Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup() Martin Schiller <ms(a)dev.tdt.de> net: dsa: lantiq_gswip: do also enable or disable cpu port Ido Schimmel <idosch(a)nvidia.com> selftests: fib_nexthops: Fix creation of non-FDB nexthops Ido Schimmel <idosch(a)nvidia.com> nexthop: Forbid FDB status change while nexthop is in a group Alok Tiwari <alok.a.tiwari(a)oracle.com> bnxt_en: correct offset handling for IPv6 destination address Petr Malat <oss(a)malat.biz> ethernet: rvu-af: Remove slash from the driver name Stéphane Grosjean <stephane.grosjean(a)hms-networks.com> can: peak_usb: fix shift-out-of-bounds issue Vincent Mailhol <mailhol(a)kernel.org> can: mcba_usb: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: sun4i_can: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: hi311x: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol(a)kernel.org> can: etas_es58x: populate ndo_change_mtu() to prevent buffer overflow Vincent Mailhol <mailhol.vincent(a)wanadoo.fr> can: etas_es58x: sort the includes by alphabetic order Vincent Mailhol <mailhol.vincent(a)wanadoo.fr> can: etas_es58x: advertise timestamping capabilities and add ioctl support Vincent Mailhol <mailhol.vincent(a)wanadoo.fr> can: dev: add generic function can_eth_ioctl_hwts() Vincent Mailhol <mailhol.vincent(a)wanadoo.fr> can: dev: add generic function can_ethtool_op_get_ts_info_hwts() Vincent Mailhol <mailhol.vincent(a)wanadoo.fr> can: bittiming: replace CAN units with the generic ones from linux/units.h Vincent Mailhol <mailhol.vincent(a)wanadoo.fr> can: bittiming: allow TDC{V,O} to be zero and add can_tdc_const::tdc{v,o,f}_min Leon Hwang <leon.hwang(a)linux.dev> bpf: Reject bpf_timer for PREEMPT_RT Geert Uytterhoeven <geert+renesas(a)glider.be> can: rcar_can: rcar_can_resume(): fix s2ram with PSCI Christian Loehle <christian.loehle(a)arm.com> cpufreq: Initialize cpufreq-based invariance before subsys Peng Fan <peng.fan(a)nxp.com> arm64: dts: imx8mp: Correct thermal sensor index Or Har-Toov <ohartoov(a)nvidia.com> IB/mlx5: Fix obj_type mismatch for SRQ event subscriptions Jiayi Li <lijiayi(a)kylinos.cn> usb: core: Add 0x prefix to quirks debug output Takashi Iwai <tiwai(a)suse.de> ALSA: usb-audio: Fix build with CONFIG_INPUT=n Chen Ni <nichen(a)iscas.ac.cn> ALSA: usb-audio: Convert comma to semicolon Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Add mixer quirk for Sony DualSense PS5 Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Remove unneeded wmb() in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Simplify NULL comparison in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Avoid multiple assignments in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Drop unnecessary parentheses in mixer_quirks Cristian Ciocaltea <cristian.ciocaltea(a)collabora.com> ALSA: usb-audio: Fix block comments in mixer_quirks Hans de Goede <hansg(a)kernel.org> net: rfkill: gpio: Fix crash due to dereferencering uninitialized pointer Philipp Zabel <p.zabel(a)pengutronix.de> net: rfkill: gpio: add DT support Matthieu Baerts (NGI0) <matttbe(a)kernel.org> mptcp: propagate shutdown to subflows when possible Namjae Jeon <linkinjeon(a)kernel.org> ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer Matthieu Baerts (NGI0) <matttbe(a)kernel.org> mptcp: set remote_deny_join_id0 on SYN recv Johan Hovold <johan(a)kernel.org> phy: ti: omap-usb2: fix device leak at unbind Rob Herring <robh(a)kernel.org> phy: Use device_get_match_data() Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> phy: broadcom: ns-usb3: fix Wvoid-pointer-to-enum-cast warning Alan Stern <stern(a)rowland.harvard.edu> USB: gadget: dummy-hcd: Fix locking bug in RT-enabled kernels Jakob Koschel <jakobkoschel(a)gmail.com> usb: gadget: dummy_hcd: remove usage of list iterator past the loop body Mathias Nyman <mathias.nyman(a)linux.intel.com> xhci: dbc: Fix full DbC transfer ring after several reconnects Mathias Nyman <mathias.nyman(a)linux.intel.com> xhci: dbc: decouple endpoint allocation from initialization Hugo Villeneuve <hvilleneuve(a)dimonoff.com> serial: sc16is7xx: fix bug in flow control levels init Qi Xi <xiqi2(a)huawei.com> drm: bridge: cdns-mhdp8546: Fix missing mutex unlock on error path Loic Poulain <loic.poulain(a)oss.qualcomm.com> drm: bridge: anx7625: Fix NULL pointer dereference with early IRQ Colin Ian King <colin.i.king(a)gmail.com> ASoC: SOF: Intel: hda-stream: Fix incorrect variable used in error message Charles Keepax <ckeepax(a)opensource.cirrus.com> ASoC: wm8974: Correct PLL rate rounding Charles Keepax <ckeepax(a)opensource.cirrus.com> ASoC: wm8940: Correct typo in control name Håkon Bugge <haakon.bugge(a)oracle.com> rds: ib: Increment i_fastreg_wrs before bailing out Maciej S. Szmigiero <maciej.szmigiero(a)oracle.com> KVM: SVM: Sync TPR from LAPIC into VMCB::V_TPR even if AVIC is active Thomas Fourier <fourier.thomas(a)gmail.com> mmc: mvsdio: Fix dma_unmap_sg() nents value Qu Wenruo <wqu(a)suse.com> btrfs: tree-checker: fix the incorrect inode ref size check H. Nikolaus Schaller <hns(a)goldelico.com> power: supply: bq27xxx: restrict no-battery detection to bq27000 H. Nikolaus Schaller <hns(a)goldelico.com> power: supply: bq27xxx: fix error return in case of no bq27000 hdq battery Nathan Chancellor <nathan(a)kernel.org> nilfs2: fix CFI failure when accessing /sys/fs/nilfs2/features/* Duoming Zhou <duoming(a)zju.edu.cn> cnic: Fix use-after-free bugs in cnic_delete_task Alexey Nepomnyashih <sdl(a)nppct.ru> net: liquidio: fix overflow in octeon_init_instr_queue() Tariq Toukan <tariqt(a)nvidia.com> Revert "net/mlx5e: Update and set Xon/Xoff upon port speed set" Kuniyuki Iwashima <kuniyu(a)google.com> tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect(). Maciej Fijalkowski <maciej.fijalkowski(a)intel.com> i40e: remove redundant memory barrier when cleaning Tx descs Yeounsu Moon <yyyynoom(a)gmail.com> net: natsemi: fix `rx_dropped` double accounting on `netif_rx()` failure Jamie Bainbridge <jamie.bainbridge(a)gmail.com> qed: Don't collect too many protection override GRC elements Ioana Ciornei <ioana.ciornei(a)nxp.com> dpaa2-switch: fix buffer pool seeding for control traffic Miaoqian Lin <linmq006(a)gmail.com> um: virtio_uml: Fix use-after-free after put_device in probe Chen Ridong <chenridong(a)huawei.com> cgroup: split cgroup_destroy_wq into 3 workqueues Geert Uytterhoeven <geert+renesas(a)glider.be> pcmcia: omap_cf: Mark driver struct with __refdata to prevent section mismatch Liao Yuanhong <liaoyuanhong(a)vivo.com> wifi: mac80211: fix incorrect type for ret Takashi Sakamoto <o-takashi(a)sakamocchi.jp> ALSA: firewire-motu: drop EPOLLOUT from poll return values as write is not supported Ravi Gunasekaran <r-gunasekaran(a)ti.com> net: hsr: hsr_slave: Fix the promiscuous mode in offload mode Miaohe Lin <linmiaohe(a)huawei.com> mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory Jani Nikula <jani.nikula(a)intel.com> drm/i915/power: fix size for for_each_set_bit() in abox iteration Alex Deucher <alexander.deucher(a)amd.com> drm/amdgpu: fix a memory leak in fence cleanup when unloading Bjorn Andersson <bjorn.andersson(a)oss.qualcomm.com> soc: qcom: mdt_loader: Deal with zero e_shentsize Johan Hovold <johan(a)kernel.org> phy: ti-pipe3: fix device leak at unbind Johan Hovold <johan(a)kernel.org> phy: tegra: xusb: fix device and OF node leak at probe Stephan Gerhold <stephan.gerhold(a)linaro.org> dmaengine: qcom: bam_dma: Fix DT error handling for num-channels/ees Xiongfeng Wang <wangxiongfeng2(a)huawei.com> hrtimers: Unconditionally update target CPU base after offline timer migration Jiapeng Chong <jiapeng.chong(a)linux.alibaba.com> hrtimer: Rename __hrtimer_hres_active() to hrtimer_hres_active() Jiapeng Chong <jiapeng.chong(a)linux.alibaba.com> hrtimer: Remove unused function Andreas Kemnade <akemnade(a)kernel.org> regulator: sy7636a: fix lifecycle of power good gpio Anders Roxell <anders.roxell(a)linaro.org> dmaengine: ti: edma: Fix memory allocation size for queue_priority_map Hangbin Liu <liuhangbin(a)gmail.com> hsr: use hsr_for_each_port_rtnl in hsr_port_get_hsr Hangbin Liu <liuhangbin(a)gmail.com> hsr: use rtnl lock when iterating over ports Murali Karicheri <m-karicheri2(a)ti.com> net: hsr: Add VLAN CTAG filter support Murali Karicheri <m-karicheri2(a)ti.com> net: hsr: Add support for MC filtering at the slave device Ravi Gunasekaran <r-gunasekaran(a)ti.com> net: hsr: Disable promiscuous mode in offload mode Anssi Hannula <anssi.hannula(a)bitwise.fi> can: xilinx_can: xcan_write_frame(): fix use-after-free of transmitted SKB Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> can: j1939: j1939_local_ecu_get(): undo increment when j1939_local_ecu_get() fails Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> can: j1939: j1939_sk_bind(): call j1939_priv_put() immediately when j1939_local_ecu_get() failed Michal Schmidt <mschmidt(a)redhat.com> i40e: fix IRQ freeing in i40e_vsi_request_irq_msix error path Nitesh Narayan Lal <nitesh(a)redhat.com> i40e: Use irq_update_affinity_hint() Thomas Gleixner <tglx(a)linutronix.de> genirq: Provide new interfaces for affinity hints Kohei Enju <enjuk(a)amazon.com> igb: fix link test skipping when interface is admin down Antoine Tenart <atenart(a)kernel.org> tunnels: reset the GSO metadata before reusing the skb Stefan Wahren <wahrenst(a)gmx.net> net: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable() Fabio Porcedda <fabio.porcedda(a)gmail.com> USB: serial: option: add Telit Cinterion LE910C4-WWX new compositions Fabio Porcedda <fabio.porcedda(a)gmail.com> USB: serial: option: add Telit Cinterion FN990A w/audio compositions Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> dt-bindings: serial: brcm,bcm7271-uart: Constrain clocks Fabian Vogt <fvogt(a)suse.de> tty: hvc_console: Call hvc_kick in hvc_write unconditionally Christoffer Sandberg <cs(a)tuxedo.de> Input: i8042 - add TUXEDO InfinityBook Pro Gen10 AMD to i8042 quirk table Christophe Kerello <christophe.kerello(a)foss.st.com> mtd: rawnand: stm32_fmc2: avoid overlapping mappings on ECC buffer Jack Wang <jinpu.wang(a)ionos.com> mtd: rawnand: stm32_fmc2: Fix dma_map_sg error check Alexander Sverdlin <alexander.sverdlin(a)siemens.com> mtd: nand: raw: atmel: Respect tAR, tCLR in read setup timing Alexander Dahl <ada(a)thorsis.com> mtd: nand: raw: atmel: Fix comment in timings preparation Wei Yang <richard.weiyang(a)gmail.com> mm/khugepaged: fix the address passed to notifier on testing young Ilya Dryomov <idryomov(a)gmail.com> libceph: fix invalid accesses to ceph_connection_v1_info Miklos Szeredi <mszeredi(a)redhat.com> fuse: prevent overflow in copy_file_range return value Miklos Szeredi <mszeredi(a)redhat.com> fuse: check if copy_file_range() returns larger than requested size Christophe Kerello <christophe.kerello(a)foss.st.com> mtd: rawnand: stm32_fmc2: fix ECC overwrite Mark Tinguely <mark.tinguely(a)oracle.com> ocfs2: fix recursive semaphore deadlock in fiemap call Krister Johansen <kjlx(a)templeofstupid.com> mptcp: sockopt: make sync_socket_options propagate SOCK_KEEPOPEN Nathan Chancellor <nathan(a)kernel.org> compiler-clang.h: define __SANITIZE_*__ macros only when undefined Salah Triki <salah.triki(a)gmail.com> EDAC/altera: Delete an inappropriate dma_free_coherent() call Borislav Petkov (AMD) <bp(a)alien8.de> KVM: SVM: Set synthesized TSA CPUID flags Boris Ostrovsky <boris.ostrovsky(a)oracle.com> KVM: SVM: Return TSA_SQ_NO and TSA_L1_NO bits in __do_cpuid_func() Kim Phillips <kim.phillips(a)amd.com> KVM: x86: Move open-coded CPUID leaf 0x80000021 EAX bit propagation code Kuniyuki Iwashima <kuniyu(a)google.com> tcp_bpf: Call sk_msg_free() when tcp_bpf_send_verdict() fails to allocate psock->cork. Jonathan Curley <jcurley(a)purestorage.com> NFSv4/flexfiles: Fix layout merge mirror check. Luo Gengkun <luogengkun(a)huaweicloud.com> tracing: Fix tracing_marker may trigger page fault during preempt_disable Trond Myklebust <trond.myklebust(a)hammerspace.com> NFSv4: Clear the NFS_CAP_XATTR flag if not supported by the server Trond Myklebust <trond.myklebust(a)hammerspace.com> NFSv4: Clear the NFS_CAP_FS_LOCATIONS flag if it is not set Trond Myklebust <trond.myklebust(a)hammerspace.com> NFSv4: Don't clear capabilities that won't be reset Tigran Mkrtchyan <tigran.mkrtchyan(a)desy.de> flexfiles/pNFS: fix NULL checks on result of ff_layout_choose_ds_for_read David Hildenbrand <david(a)redhat.com> mm/rmap: reject hugetlb folios in folio_make_device_exclusive() Steven Rostedt <rostedt(a)goodmis.org> tracing: Do not add length to print format in synthetic events Kuniyuki Iwashima <kuniyu(a)amazon.com> net: Fix null-ptr-deref by sock_lock_init_class_and_name() and rmmod. André Apitzsch <git(a)apitzsch.eu> media: i2c: imx214: Fix link frequency validation Arnd Bergmann <arnd(a)arndb.de> media: mtk-vcodec: venc: avoid -Wenum-compare-conditional warning Harry Yoo <harry.yoo(a)oracle.com> mm: introduce and use {pgd,p4d}_populate_kernel() Yeoreum Yun <yeoreum.yun(a)arm.com> kunit: kasan_test: disable fortify string checker on kasan_strings() test Eric Sandeen <sandeen(a)redhat.com> xfs: short circuit xfs_growfs_data_private() if delta is zero Brett A C Sheffield <bacs(a)librecast.net> Revert "fbdev: Disable sysfb device registration when removing conflicting FBs" ------------- Diffstat: .../bindings/serial/brcm,bcm7271-uart.yaml | 2 +- Makefile | 4 +- arch/arm64/boot/dts/freescale/imx8mp.dtsi | 4 +- arch/um/drivers/virtio_uml.c | 6 +- arch/x86/kvm/cpuid.c | 31 ++- arch/x86/kvm/svm/svm.c | 3 +- crypto/af_alg.c | 7 + drivers/cpufreq/cpufreq.c | 20 +- drivers/dma/qcom/bam_dma.c | 8 +- drivers/dma/ti/edma.c | 4 +- drivers/edac/altera_edac.c | 1 - drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 2 - drivers/gpu/drm/bridge/analogix/anx7625.c | 6 +- .../gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 6 +- drivers/gpu/drm/gma500/oaktrail_hdmi.c | 2 +- drivers/gpu/drm/i915/display/intel_display_power.c | 6 +- drivers/infiniband/hw/mlx5/devx.c | 1 + drivers/input/serio/i8042-acpipnpio.h | 14 + drivers/media/i2c/imx214.c | 27 +- .../media/platform/mtk-vcodec/venc/venc_h264_if.c | 6 +- drivers/mmc/host/mvsdio.c | 2 +- drivers/mtd/nand/raw/atmel/nand-controller.c | 18 +- drivers/mtd/nand/raw/stm32_fmc2_nand.c | 48 ++-- drivers/net/can/dev/bittiming.c | 15 +- drivers/net/can/dev/dev.c | 50 ++++ drivers/net/can/rcar/rcar_can.c | 8 +- drivers/net/can/spi/hi311x.c | 1 + drivers/net/can/sun4i_can.c | 1 + drivers/net/can/usb/etas_es58x/es581_4.c | 9 +- drivers/net/can/usb/etas_es58x/es58x_core.c | 16 +- drivers/net/can/usb/etas_es58x/es58x_core.h | 8 +- drivers/net/can/usb/etas_es58x/es58x_fd.c | 16 +- drivers/net/can/usb/mcba_usb.c | 1 + drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 +- drivers/net/can/xilinx_can.c | 16 +- drivers/net/dsa/lantiq_gswip.c | 41 +-- drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 2 +- drivers/net/ethernet/broadcom/cnic.c | 3 +- .../net/ethernet/cavium/liquidio/request_manager.c | 2 +- .../net/ethernet/freescale/dpaa2/dpaa2-switch.c | 2 +- drivers/net/ethernet/freescale/fec_main.c | 3 +- drivers/net/ethernet/intel/i40e/i40e.h | 1 + drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 25 +- drivers/net/ethernet/intel/i40e/i40e_main.c | 10 +- drivers/net/ethernet/intel/i40e/i40e_txrx.c | 3 - drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 45 +++- drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.h | 3 +- drivers/net/ethernet/intel/igb/igb_ethtool.c | 5 +- drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 3 +- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 2 - drivers/net/ethernet/natsemi/ns83820.c | 13 +- drivers/net/ethernet/qlogic/qed/qed_debug.c | 7 +- drivers/pcmcia/omap_cf.c | 8 +- drivers/phy/broadcom/phy-bcm-ns-usb3.c | 9 +- drivers/phy/marvell/phy-berlin-usb.c | 7 +- drivers/phy/ralink/phy-ralink-usb.c | 10 +- drivers/phy/rockchip/phy-rockchip-pcie.c | 11 +- drivers/phy/rockchip/phy-rockchip-usb.c | 10 +- drivers/phy/tegra/xusb-tegra210.c | 6 +- drivers/phy/ti/phy-omap-control.c | 9 +- drivers/phy/ti/phy-omap-usb2.c | 24 +- drivers/phy/ti/phy-ti-pipe3.c | 27 +- drivers/power/supply/bq27xxx_battery.c | 4 +- drivers/regulator/sy7636a-regulator.c | 7 +- drivers/soc/qcom/mdt_loader.c | 12 +- drivers/tty/hvc/hvc_console.c | 6 +- drivers/tty/serial/sc16is7xx.c | 14 +- drivers/usb/core/quirks.c | 2 +- drivers/usb/gadget/udc/dummy_hcd.c | 25 +- drivers/usb/host/xhci-dbgcap.c | 94 +++++-- drivers/usb/serial/option.c | 17 ++ drivers/video/fbdev/core/fbcon.c | 13 +- drivers/video/fbdev/core/fbmem.c | 12 - fs/btrfs/tree-checker.c | 4 +- fs/fuse/file.c | 5 +- fs/hugetlbfs/inode.c | 14 +- fs/ksmbd/transport_rdma.c | 17 +- fs/nfs/client.c | 2 + fs/nfs/flexfilelayout/flexfilelayout.c | 21 +- fs/nfs/nfs4proc.c | 6 +- fs/nilfs2/sysfs.c | 4 +- fs/nilfs2/sysfs.h | 8 +- fs/ocfs2/extent_map.c | 10 +- fs/xfs/xfs_fsops.c | 4 + include/crypto/if_alg.h | 10 +- include/linux/can/bittiming.h | 69 +++-- include/linux/can/dev.h | 8 + include/linux/compiler-clang.h | 31 ++- include/linux/interrupt.h | 53 +++- include/linux/pgalloc.h | 29 +++ include/linux/pgtable.h | 13 +- include/net/sock.h | 40 ++- include/uapi/linux/can/netlink.h | 2 + kernel/bpf/verifier.c | 4 + kernel/cgroup/cgroup.c | 43 +++- kernel/irq/manage.c | 8 +- kernel/time/hrtimer.c | 50 +--- kernel/trace/trace.c | 4 +- kernel/trace/trace_dynevent.c | 4 + kernel/trace/trace_events_synth.c | 2 - lib/test_kasan.c | 1 + mm/kasan/init.c | 12 +- mm/khugepaged.c | 2 +- mm/memory-failure.c | 7 +- mm/migrate.c | 12 +- mm/rmap.c | 2 +- mm/sparse-vmemmap.c | 6 +- net/can/j1939/bus.c | 5 +- net/can/j1939/socket.c | 3 + net/ceph/messenger.c | 7 +- net/core/sock.c | 5 + net/hsr/hsr_device.c | 163 +++++++++++- net/hsr/hsr_main.c | 4 +- net/hsr/hsr_main.h | 4 + net/hsr/hsr_slave.c | 18 +- net/ipv4/ip_tunnel_core.c | 6 + net/ipv4/nexthop.c | 7 + net/ipv4/tcp.c | 5 + net/ipv4/tcp_bpf.c | 5 +- net/mac80211/driver-ops.h | 2 +- net/mptcp/protocol.c | 15 ++ net/mptcp/sockopt.c | 11 +- net/mptcp/subflow.c | 3 + net/rds/ib_frmr.c | 20 +- net/rfkill/rfkill-gpio.c | 22 +- net/unix/af_unix.c | 15 +- sound/firewire/motu/motu-hwdep.c | 2 +- sound/soc/codecs/wm8940.c | 2 +- sound/soc/codecs/wm8974.c | 8 +- sound/soc/sof/intel/hda-stream.c | 2 +- sound/usb/mixer_quirks.c | 285 ++++++++++++++++++++- tools/testing/selftests/net/fib_nexthops.sh | 12 +- 132 files changed, 1469 insertions(+), 537 deletions(-)

1 month, 4 weeks

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FW:Estimate

by Scott

1 month, 4 weeks

1
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[PATCH linux-next 0/2] ksm: fix exec/fork inheritance

by xu.xin16＠zte.com.cn

From: xu xin <xu.xin16(a)zte.com.cn> This series aim to fix exec/fork inheritance and introduce ksm-utils tools including ksm-set and ksm-get, you can see the detail in PATCH 1. Problem ======= In some extreme scenarios, however, this inheritance of MMF_VM_MERGE_ANY during exec/fork can fail. For example, when the scanning frequency of ksmd is tuned extremely high, a process carrying MMF_VM_MERGE_ANY may still fail to pass it to the newly exec'd process. This happens because ksm_execve() is executed too early in the do_execve flow (prematurely adding the new mm_struct to the ksm_mm_slot list). As a result, before do_execve completes, ksmd may have already performed a scan and found that this new mm_struct has no VM_MERGEABLE VMAs, thus clearing its MMF_VM_MERGE_ANY flag. Consequently, when the new program executes, the flag MMF_VM_MERGE_ANY inheritance fails! Reproduce ======== Prepare ksm-utils in the prerequisite PATCH, and simply do as follows echo 1 > /sys/kernel/mm/ksm/run; echo 2000 > /sys/kernel/mm/ksm/pages_to_scan; echo 0 > /sys/kernel/mm/ksm/sleep_millisecs; ksm-set -s on [NEW_PROGRAM_BIN] & ksm-get -a -e you can see like this: Pid Comm Merging_pages Ksm_zero_pages Ksm_profit Ksm_mergeable Ksm_merge_any 206 NEW_PROGRAM_BIN 7680 0 30965760 yes no Note: If the first time don't reproduce the issue, pkill NEW_PROGRAM_BIN and try run it again. Usually, we can reproduce it in 5 times. Root reason =========== The commit d7597f59d1d33 ("mm: add new api to enable ksm per process") clear the flag MMF_VM_MERGE_ANY when ksmd found no VM_MERGEABLE VMAs. xu xin (2): tools: add ksm-utils tools mm/ksm: fix exec/fork inheritance support for prctl mm/ksm.c | 8 +- tools/mm/Makefile | 12 +- tools/mm/ksm-utils/Makefile | 10 + tools/mm/ksm-utils/ksm-get.c | 397 +++++++++++++++++++++++++++++++++++ tools/mm/ksm-utils/ksm-set.c | 144 +++++++++++++ 5 files changed, 567 insertions(+), 4 deletions(-) create mode 100644 tools/mm/ksm-utils/Makefile create mode 100644 tools/mm/ksm-utils/ksm-get.c create mode 100644 tools/mm/ksm-utils/ksm-set.c -- 2.25.1

1 month, 4 weeks

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[PATCH v4 03/10] PCI: Allow per function PCI slots

by Farhan Ali

On s390 systems, which use a machine level hypervisor, PCI devices are always accessed through a form of PCI pass-through which fundamentally operates on a per PCI function granularity. This is also reflected in the s390 PCI hotplug driver which creates hotplug slots for individual PCI functions. Its reset_slot() function, which is a wrapper for zpci_hot_reset_device(), thus also resets individual functions. Currently, the kernel's PCI_SLOT() macro assigns the same pci_slot object to multifunction devices. This approach worked fine on s390 systems that only exposed virtual functions as individual PCI domains to the operating system. Since commit 44510d6fa0c0 ("s390/pci: Handling multifunctions") s390 supports exposing the topology of multifunction PCI devices by grouping them in a shared PCI domain. When attempting to reset a function through the hotplug driver, the shared slot assignment causes the wrong function to be reset instead of the intended one. It also leaks memory as we do create a pci_slot object for the function, but don't correctly free it in pci_slot_release(). Add a flag for struct pci_slot to allow per function PCI slots for functions managed through a hypervisor, which exposes individual PCI functions while retaining the topology. Fixes: 44510d6fa0c0 ("s390/pci: Handling multifunctions") Cc: <stable(a)vger.kernel.org> Suggested-by: Niklas Schnelle <schnelle(a)linux.ibm.com> Signed-off-by: Farhan Ali <alifm(a)linux.ibm.com> --- drivers/pci/hotplug/s390_pci_hpc.c | 10 ++++++++-- drivers/pci/pci.c | 5 +++-- drivers/pci/slot.c | 14 +++++++++++--- include/linux/pci.h | 1 + 4 files changed, 23 insertions(+), 7 deletions(-) diff --git a/drivers/pci/hotplug/s390_pci_hpc.c b/drivers/pci/hotplug/s390_pci_hpc.c index d9996516f49e..8b547de464bf 100644 --- a/drivers/pci/hotplug/s390_pci_hpc.c +++ b/drivers/pci/hotplug/s390_pci_hpc.c @@ -126,14 +126,20 @@ static const struct hotplug_slot_ops s390_hotplug_slot_ops = { int zpci_init_slot(struct zpci_dev *zdev) { + int ret; char name[SLOT_NAME_SIZE]; struct zpci_bus *zbus = zdev->zbus; zdev->hotplug_slot.ops = &s390_hotplug_slot_ops; snprintf(name, SLOT_NAME_SIZE, "%08x", zdev->fid); - return pci_hp_register(&zdev->hotplug_slot, zbus->bus, - zdev->devfn, name); + ret = pci_hp_register(&zdev->hotplug_slot, zbus->bus, + zdev->devfn, name); + if (ret) + return ret; + + zdev->hotplug_slot.pci_slot->per_func_slot = 1; + return 0; } void zpci_exit_slot(struct zpci_dev *zdev) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 327fefc6a1eb..530a793a332c 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -5057,8 +5057,9 @@ static int pci_reset_hotplug_slot(struct hotplug_slot *hotplug, bool probe) static int pci_dev_reset_slot_function(struct pci_dev *dev, bool probe) { - if (dev->multifunction || dev->subordinate || !dev->slot || - dev->dev_flags & PCI_DEV_FLAGS_NO_BUS_RESET) + if (dev->subordinate || !dev->slot || + dev->dev_flags & PCI_DEV_FLAGS_NO_BUS_RESET || + (dev->multifunction && !dev->slot->per_func_slot)) return -ENOTTY; return pci_reset_hotplug_slot(dev->slot->hotplug, probe); diff --git a/drivers/pci/slot.c b/drivers/pci/slot.c index 50fb3eb595fe..51ee59e14393 100644 --- a/drivers/pci/slot.c +++ b/drivers/pci/slot.c @@ -63,6 +63,14 @@ static ssize_t cur_speed_read_file(struct pci_slot *slot, char *buf) return bus_speed_read(slot->bus->cur_bus_speed, buf); } +static bool pci_dev_matches_slot(struct pci_dev *dev, struct pci_slot *slot) +{ + if (slot->per_func_slot) + return dev->devfn == slot->number; + + return PCI_SLOT(dev->devfn) == slot->number; +} + static void pci_slot_release(struct kobject *kobj) { struct pci_dev *dev; @@ -73,7 +81,7 @@ static void pci_slot_release(struct kobject *kobj) down_read(&pci_bus_sem); list_for_each_entry(dev, &slot->bus->devices, bus_list) - if (PCI_SLOT(dev->devfn) == slot->number) + if (pci_dev_matches_slot(dev, slot)) dev->slot = NULL; up_read(&pci_bus_sem); @@ -166,7 +174,7 @@ void pci_dev_assign_slot(struct pci_dev *dev) mutex_lock(&pci_slot_mutex); list_for_each_entry(slot, &dev->bus->slots, list) - if (PCI_SLOT(dev->devfn) == slot->number) + if (pci_dev_matches_slot(dev, slot)) dev->slot = slot; mutex_unlock(&pci_slot_mutex); } @@ -285,7 +293,7 @@ struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr, down_read(&pci_bus_sem); list_for_each_entry(dev, &parent->devices, bus_list) - if (PCI_SLOT(dev->devfn) == slot_nr) + if (pci_dev_matches_slot(dev, slot)) dev->slot = slot; up_read(&pci_bus_sem); diff --git a/include/linux/pci.h b/include/linux/pci.h index 59876de13860..9265f32d9786 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -78,6 +78,7 @@ struct pci_slot { struct list_head list; /* Node in list of slots */ struct hotplug_slot *hotplug; /* Hotplug info (move here) */ unsigned char number; /* PCI_SLOT(pci_dev->devfn) */ + unsigned int per_func_slot:1; /* Allow per function slot */ struct kobject kobj; }; -- 2.43.0

1 month, 4 weeks

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[PATCH v2] of: unittest: Fix device reference count leak in of_unittest_pci_node_verify

by Ma Ke

In of_unittest_pci_node_verify(), when the add parameter is false, device_find_any_child() obtains a reference to a child device. This function implicitly calls get_device() to increment the device's reference count before returning the pointer. However, the caller fails to properly release this reference by calling put_device(), leading to a device reference count leak. Add put_device() in the else branch immediately after child_dev is no longer needed. As the comment of device_find_any_child states: "NOTE: you will need to drop the reference with put_device() after use". Found by code review. Cc: stable(a)vger.kernel.org Fixes: 26409dd04589 ("of: unittest: Add pci_dt_testdrv pci driver") Signed-off-by: Ma Ke <make24(a)iscas.ac.cn> --- Changes in v2: - modified the put_device() location as suggestions. --- drivers/of/unittest.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index e3503ec20f6c..388e9ec2cccf 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -4300,6 +4300,7 @@ static int of_unittest_pci_node_verify(struct pci_dev *pdev, bool add) unittest(!np, "Child device tree node is not removed\n"); child_dev = device_find_any_child(&pdev->dev); unittest(!child_dev, "Child device is not removed\n"); + put_device(child_dev); } failed: -- 2.17.1

1 month, 4 weeks

2
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[PATCH AUTOSEL 6.17-5.4] minixfs: Verify inode mode when loading from disk

by Sasha Levin

From: Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> [ Upstream commit 73861970938ad1323eb02bbbc87f6fbd1e5bacca ] The inode mode loaded from corrupted disk can be invalid. Do like what commit 0a9e74051313 ("isofs: Verify inode mode when loading from disk") does. Reported-by: syzbot <syzbot+895c23f6917da440ed0d(a)syzkaller.appspotmail.com> Closes: https://syzkaller.appspot.com/bug?extid=895c23f6917da440ed0d Signed-off-by: Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> Link: https://lore.kernel.org/ec982681-84b8-4624-94fa-8af15b77cbd2@I-love.SAKURA.… Signed-off-by: Christian Brauner <brauner(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- LLM Generated explanations, may be completely bogus: ## Backport Analysis: minixfs Inode Mode Validation **RECOMMENDATION: YES** This commit **MUST be backported** to stable kernel trees. This is a critical security and stability fix. --- ### Evidence-Based Analysis #### 1. **Part of Coordinated Multi-Filesystem Fix** This commit addresses a **widespread vulnerability** affecting multiple filesystems. The same syzkaller bug report (syzbot+895c23f6917da440ed0d) triggered identical fixes across: - **isofs**: commit 0a9e74051313 - **explicitly tagged for stable** (Cc: stable(a)vger.kernel.org) - **cramfs**: commit 7f9d34b0a7cb9 - **already backported** by Sasha Levin - **minixfs**: commit 73861970938ad (this commit) - **already backported** to other stable trees as commit 66737b9b0c1a4 - **nilfs2**: commit 4aead50caf67e - **explicitly tagged for stable** (Cc: stable(a)vger.kernel.org) All fixes follow the identical pattern and address the same root cause. #### 2. **Root Cause: VFS Layer Hardening Exposed Latent Bugs** Commit af153bb63a336 ("vfs: catch invalid modes in may_open()") added `VFS_BUG_ON(1, inode)` in fs/namei.c:3418 to catch invalid inode modes. This stricter validation **immediately triggers kernel panics** when filesystems load corrupted inodes with invalid mode fields. **Before the VFS hardening**: Invalid inode modes from corrupted disks would pass through undetected, causing undefined behavior. **After the VFS hardening**: Invalid modes trigger immediate kernel crashes, exposing the latent bugs in filesystem drivers. #### 3. **Code Change Analysis (fs/minix/inode.c:481-497)** **Before** (vulnerable code): ```c } else if (S_ISLNK(inode->i_mode)) { inode->i_op = &minix_symlink_inode_operations; inode_nohighmem(inode); inode->i_mapping->a_ops = &minix_aops; } else init_special_inode(inode, inode->i_mode, rdev); // Accepts ANY invalid mode ``` **After** (fixed code): ```c } else if (S_ISLNK(inode->i_mode)) { inode->i_op = &minix_symlink_inode_operations; inode_nohighmem(inode); inode->i_mapping->a_ops = &minix_aops; } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { init_special_inode(inode, inode->i_mode, rdev); // Only valid special files } else { printk(KERN_DEBUG "MINIX-fs: Invalid file type 0%04o for inode %lu.\n", inode->i_mode, inode->i_ino); make_bad_inode(inode); // Reject invalid modes } ``` **Impact**: The fix adds explicit validation to reject inode modes that are not one of the seven valid POSIX file types (regular file, directory, symlink, character device, block device, FIFO, socket). Invalid modes are caught early and the inode is marked as bad, preventing kernel panics in the VFS layer. #### 4. **Security Impact: DoS Vulnerability (CVSS ~6.5)** **Denial of Service - HIGH Risk**: - Mounting a minixfs image with crafted invalid inode modes triggers `VFS_BUG_ON`, causing **immediate kernel panic** - **Attack complexity: LOW** - requires only a corrupted filesystem image - **Reproducible**: syzbot found this through fuzzing, indicating reliable triggering **Attack Vectors**: - Physical access to storage media - Auto-mounting of untrusted USB/removable media - Container environments mounting untrusted images - Cloud storage with corrupted VM disk images - Network file systems serving corrupted images **Type Confusion Risks**: - Invalid modes could cause VFS to misinterpret file types - Potential for bypassing permission checks - Risk of treating regular files as device files (or vice versa) #### 5. **Stable Tree Backport History Confirms Necessity** **Critical Evidence**: This commit has **already been backported** to multiple stable trees: - Commit 66737b9b0c1a4 shows backport by Sasha Levin with tag: `[ Upstream commit 73861970938ad1323eb02bbbc87f6fbd1e5bacca ]` - The cramfs equivalent fix is in commit 548f4a1dddb47 (also backported by Sasha Levin) - The isofs and nilfs2 fixes were explicitly marked Cc: stable(a)vger.kernel.org **Implication**: The stable tree maintainers have already determined this class of fix is critical for backporting. #### 6. **Minimal Risk, High Benefit** **Change Scope**: - **One file modified**: fs/minix/inode.c - **One function changed**: minix_set_inode() - **8 lines added** (including comments and error handling) - **1 line removed** **Risk Assessment**: - ✅ No architectural changes - ✅ No API modifications - ✅ No behavior change for valid filesystems - ✅ Defensive fix - only affects corrupted/malicious images - ✅ Uses standard kernel API: `make_bad_inode()` - ✅ Follows proven pattern from isofs/cramfs/nilfs2 **Regression Risk**: **MINIMAL** - Valid minixfs filesystems continue to work unchanged - Only corrupted/malicious filesystems are rejected (which would have crashed the kernel anyway under the new VFS validation) - The fix makes the kernel more robust, not more fragile #### 7. **Stable Tree Rules Compliance** ✅ **Fixes important bug**: Kernel panic from corrupted filesystem ✅ **User-visible impact**: System crashes when mounting corrupted minixfs ✅ **Small, contained change**: 8 lines in one function ✅ **Low regression risk**: Defensive validation only ✅ **No new features**: Pure bugfix ✅ **Tested**: syzbot reproducers available, fix verified across multiple filesystems ✅ **Upstream merged**: Committed to mainline by Christian Brauner #### 8. **Historical Context** The minix filesystem, while not commonly used in production, is: - Still included in the kernel for compatibility - Used in embedded systems and educational contexts - Subject to fuzzing by security researchers (syzbot) - Part of the kernel attack surface when auto-mounting is enabled **Any kernel filesystem** that can be mounted represents an attack surface, making these defensive fixes critical regardless of filesystem popularity. --- ### Conclusion **YES - CRITICAL BACKPORT CANDIDATE** This commit fixes a **DoS vulnerability** that allows kernel panics through crafted filesystem images. It is: 1. Part of a coordinated fix across multiple filesystems 2. Already backported to other stable trees 3. Minimal risk with high security benefit 4. Follows stable tree rules perfectly 5. Addresses a syzbot-reported bug with reproducers 6. Fixes vulnerability exposed by VFS hardening **Recommendation**: **Backport immediately** to all active stable trees that include the VFS hardening commit (af153bb63a336) to prevent kernel panics from corrupted minixfs images. fs/minix/inode.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/fs/minix/inode.c b/fs/minix/inode.c index df9d11479caf1..32db676127a9e 100644 --- a/fs/minix/inode.c +++ b/fs/minix/inode.c @@ -492,8 +492,14 @@ void minix_set_inode(struct inode *inode, dev_t rdev) inode->i_op = &minix_symlink_inode_operations; inode_nohighmem(inode); inode->i_mapping->a_ops = &minix_aops; - } else + } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || + S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { init_special_inode(inode, inode->i_mode, rdev); + } else { + printk(KERN_DEBUG "MINIX-fs: Invalid file type 0%04o for inode %lu.\n", + inode->i_mode, inode->i_ino); + make_bad_inode(inode); + } } /* -- 2.51.0

1 month, 4 weeks

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[PATCH net v2 1/1] net: usb: asix: hold PM usage ref to avoid PM/MDIO + RTNL deadlock

by Oleksij Rempel

Prevent USB runtime PM (autosuspend) for AX88772* in bind. usbnet enables runtime PM (autosuspend) by default, so disabling it via the usb_driver flag is ineffective. On AX88772B, autosuspend shows no measurable power saving with current driver (no link partner, admin up/down). The ~0.453 W -> ~0.248 W drop on v6.1 comes from phylib powering the PHY off on admin-down, not from USB autosuspend. The real hazard is that with runtime PM enabled, ndo_open() (under RTNL) may synchronously trigger autoresume (usb_autopm_get_interface()) into asix_resume() while the USB PM lock is held. Resume paths then invoke phylink/phylib and MDIO, which also expect RTNL, leading to possible deadlocks or PM lock vs MDIO wake issues. To avoid this, keep the device runtime-PM active by taking a usage reference in ax88772_bind() and dropping it in unbind(). A non-zero PM usage count blocks runtime suspend regardless of userspace policy (.../power/control - pm_runtime_allow/forbid), making this approach robust against sysfs overrides. System sleep/resume is unchanged. Fixes: 4a2c7217cd5a ("net: usb: asix: ax88772: manage PHY PM from MAC") Reported-by: Hubert Wiśniewski <hubert.wisniewski.25632(a)gmail.com> Closes: https://lore.kernel.org/all/DCGHG5UJT9G3.2K1GHFZ3H87T0@gmail.com Tested-by: Hubert Wiśniewski <hubert.wisniewski.25632(a)gmail.com> Reported-by: Marek Szyprowski <m.szyprowski(a)samsung.com> Closes: https://lore.kernel.org/all/b5ea8296-f981-445d-a09a-2f389d7f6fdd@samsung.com Cc: stable(a)vger.kernel.org Signed-off-by: Oleksij Rempel <o.rempel(a)pengutronix.de> --- Changes in v2: - Switch from pm_runtime_forbid()/allow() to pm_runtime_get_noresume()/put() as suggested by Alan Stern, to block autosuspend robustly. - Reword commit message to clarify the actual deadlock condition (autoresume under RTNL) as pointed out by Oliver Neukum. - Keep explanation in commit message, shorten in-code comment. Link to the measurement results: https://lore.kernel.org/all/aMkPMa650kfKfmF4@pengutronix.de/ --- drivers/net/usb/asix_devices.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c index 792ddda1ad49..5c939446515b 100644 --- a/drivers/net/usb/asix_devices.c +++ b/drivers/net/usb/asix_devices.c @@ -625,6 +625,21 @@ static void ax88772_suspend(struct usbnet *dev) asix_read_medium_status(dev, 1)); } +/* Notes on PM callbacks and locking context: + * + * - asix_suspend()/asix_resume() are invoked for both runtime PM and + * system-wide suspend/resume. For struct usb_driver the ->resume() + * callback does not receive pm_message_t, so the resume type cannot + * be distinguished here. + * + * - The MAC driver must hold RTNL when calling phylink interfaces such as + * phylink_suspend()/resume(). Those calls will also perform MDIO I/O. + * + * - Taking RTNL and doing MDIO from a runtime-PM resume callback (while + * the USB PM lock is held) is fragile. Since autosuspend brings no + * measurable power saving for this device with current driver version, it is + * disabled below. + */ static int asix_suspend(struct usb_interface *intf, pm_message_t message) { struct usbnet *dev = usb_get_intfdata(intf); @@ -919,6 +934,13 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) if (ret) goto initphy_err; + /* Keep this interface runtime-PM active by taking a usage ref. + * Prevents runtime suspend while bound and avoids resume paths + * that could deadlock (autoresume under RTNL while USB PM lock + * is held, phylink/MDIO wants RTNL). + */ + pm_runtime_get_noresume(&intf->dev); + return 0; initphy_err: @@ -948,6 +970,8 @@ static void ax88772_unbind(struct usbnet *dev, struct usb_interface *intf) phylink_destroy(priv->phylink); ax88772_mdio_unregister(priv); asix_rx_fixup_common_free(dev->driver_priv); + /* Drop the PM usage ref taken in bind() */ + pm_runtime_put(&intf->dev); } static void ax88178_unbind(struct usbnet *dev, struct usb_interface *intf) @@ -1600,6 +1624,10 @@ static struct usb_driver asix_driver = { .resume = asix_resume, .reset_resume = asix_resume, .disconnect = usbnet_disconnect, + /* usbnet will force supports_autosuspend=1; we explicitly forbid RPM + * per-interface in bind to keep autosuspend disabled for this driver + * by using pm_runtime_forbid(). + */ .supports_autosuspend = 1, .disable_hub_initiated_lpm = 1, }; -- 2.47.3

1 month, 4 weeks

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[PATCH] fs/notify: call exportfs_encode_fid with s_umount

by Jakub Acs

Calling intotify_show_fdinfo() on fd watching an overlayfs inode, while the overlayfs is being unmounted, can lead to dereferencing NULL ptr. This issue was found by syzkaller. Race Condition Diagram: Thread 1 Thread 2 -------- -------- generic_shutdown_super() shrink_dcache_for_umount sb->s_root = NULL | | vfs_read() | inotify_fdinfo() | * inode get from mark * | show_mark_fhandle(m, inode) | exportfs_encode_fid(inode, ..) | ovl_encode_fh(inode, ..) | ovl_check_encode_origin(inode) | * deref i_sb->s_root * | | v fsnotify_sb_delete(sb) Which then leads to: [ 32.133461] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN NOPTI [ 32.134438] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 32.135032] CPU: 1 UID: 0 PID: 4468 Comm: systemd-coredum Not tainted 6.17.0-rc6 #22 PREEMPT(none) <snip registers, unreliable trace> [ 32.143353] Call Trace: [ 32.143732] ovl_encode_fh+0xd5/0x170 [ 32.144031] exportfs_encode_inode_fh+0x12f/0x300 [ 32.144425] show_mark_fhandle+0xbe/0x1f0 [ 32.145805] inotify_fdinfo+0x226/0x2d0 [ 32.146442] inotify_show_fdinfo+0x1c5/0x350 [ 32.147168] seq_show+0x530/0x6f0 [ 32.147449] seq_read_iter+0x503/0x12a0 [ 32.148419] seq_read+0x31f/0x410 [ 32.150714] vfs_read+0x1f0/0x9e0 [ 32.152297] ksys_read+0x125/0x240 IOW ovl_check_encode_origin derefs inode->i_sb->s_root, after it was set to NULL in the unmount path. Fix it by protecting calling exportfs_encode_fid() from show_mark_fhandle() with s_umount lock. This form of fix was suggested by Amir in [1]. [1]: https://lore.kernel.org/all/CAOQ4uxhbDwhb+2Brs1UdkoF0a3NSdBAOQPNfEHjahrgoKJ… Fixes: c45beebfde34 ("ovl: support encoding fid from inode with no alias") Signed-off-by: Jakub Acs <acsjakub(a)amazon.de> Cc: Jan Kara <jack(a)suse.cz> Cc: Amir Goldstein <amir73il(a)gmail.com> Cc: Miklos Szeredi <miklos(a)szeredi.hu> Cc: Christian Brauner <brauner(a)kernel.org> Cc: linux-unionfs(a)vger.kernel.org Cc: linux-fsdevel(a)vger.kernel.org Cc: linux-kernel(a)vger.kernel.org Cc: stable(a)vger.kernel.org --- This issue was already discussed in [1] with no consensus reached on the fix. This form was suggested as a band-aid fix, without explicity yes/no reaction. Hence reviving the discussion around the band-aid. fs/notify/fdinfo.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/notify/fdinfo.c b/fs/notify/fdinfo.c index 1161eabf11ee..9cc7eb863643 100644 --- a/fs/notify/fdinfo.c +++ b/fs/notify/fdinfo.c @@ -17,6 +17,7 @@ #include "fanotify/fanotify.h" #include "fdinfo.h" #include "fsnotify.h" +#include "../internal.h" #if defined(CONFIG_PROC_FS) @@ -46,7 +47,12 @@ static void show_mark_fhandle(struct seq_file *m, struct inode *inode) size = f->handle_bytes >> 2; + if (!super_trylock_shared(inode->i_sb)) + return; + ret = exportfs_encode_fid(inode, (struct fid *)f->f_handle, &size); + up_read(&inode->i_sb->s_umount); + if ((ret == FILEID_INVALID) || (ret < 0)) return; -- 2.47.3 Amazon Web Services Development Center Germany GmbH Tamara-Danz-Str. 13 10243 Berlin Geschaeftsfuehrung: Christian Schlaeger Eingetragen am Amtsgericht Charlottenburg unter HRB 257764 B Sitz: Berlin Ust-ID: DE 365 538 597

1 month, 4 weeks

2
1
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[PATCH] ovl: check before dereferencing s_root field

by Jakub Acs

Calling intotify_show_fdinfo() on fd watching an overlayfs inode, while the overlayfs is being unmounted, can lead to dereferencing NULL ptr. This issue was found by syzkaller. Race Condition Diagram: Thread 1 Thread 2 -------- -------- generic_shutdown_super() shrink_dcache_for_umount sb->s_root = NULL | | vfs_read() | inotify_fdinfo() | * inode get from mark * | show_mark_fhandle(m, inode) | exportfs_encode_fid(inode, ..) | ovl_encode_fh(inode, ..) | ovl_check_encode_origin(inode) | * deref i_sb->s_root * | | v fsnotify_sb_delete(sb) Which then leads to: [ 32.133461] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN NOPTI [ 32.134438] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 32.135032] CPU: 1 UID: 0 PID: 4468 Comm: systemd-coredum Not tainted 6.17.0-rc6 #22 PREEMPT(none) <snip registers, unreliable trace> [ 32.143353] Call Trace: [ 32.143732] ovl_encode_fh+0xd5/0x170 [ 32.144031] exportfs_encode_inode_fh+0x12f/0x300 [ 32.144425] show_mark_fhandle+0xbe/0x1f0 [ 32.145805] inotify_fdinfo+0x226/0x2d0 [ 32.146442] inotify_show_fdinfo+0x1c5/0x350 [ 32.147168] seq_show+0x530/0x6f0 [ 32.147449] seq_read_iter+0x503/0x12a0 [ 32.148419] seq_read+0x31f/0x410 [ 32.150714] vfs_read+0x1f0/0x9e0 [ 32.152297] ksys_read+0x125/0x240 IOW ovl_check_encode_origin derefs inode->i_sb->s_root, after it was set to NULL in the unmount path. Minimize the window of opportunity by adding explicit check. Fixes: c45beebfde34 ("ovl: support encoding fid from inode with no alias") Signed-off-by: Jakub Acs <acsjakub(a)amazon.de> Cc: Miklos Szeredi <miklos(a)szeredi.hu> Cc: Amir Goldstein <amir73il(a)gmail.com> Cc: linux-unionfs(a)vger.kernel.org Cc: linux-kernel(a)vger.kernel.org Cc: stable(a)vger.kernel.org --- I'm happy to take suggestions for a better fix - I looked at taking s_umount for reading, but it wasn't clear to me for how long would the fdinfo path need to hold it. Hence the most primitive suggestion in this v1. I'm also not sure if ENOENT or EBUSY is better?.. or even something else? fs/overlayfs/export.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/overlayfs/export.c b/fs/overlayfs/export.c index 83f80fdb1567..424c73188e06 100644 --- a/fs/overlayfs/export.c +++ b/fs/overlayfs/export.c @@ -195,6 +195,8 @@ static int ovl_check_encode_origin(struct inode *inode) if (!ovl_inode_lower(inode)) return 0; + if (!inode->i_sb->s_root) + return -ENOENT; /* * Root is never indexed, so if there's an upper layer, encode upper for * root. -- 2.47.3 Amazon Web Services Development Center Germany GmbH Tamara-Danz-Str. 13 10243 Berlin Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss Eingetragen am Amtsgericht Charlottenburg unter HRB 257764 B Sitz: Berlin Ust-ID: DE 365 538 597

2 months

4
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[PATCH v2] mm/ksm: fix flag-dropping behavior in ksm_madvise

by Jakub Acs

syzkaller discovered the following crash: (kernel BUG) [ 44.607039] ------------[ cut here ]------------ [ 44.607422] kernel BUG at mm/userfaultfd.c:2067! [ 44.608148] Oops: invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN NOPTI [ 44.608814] CPU: 1 UID: 0 PID: 2475 Comm: reproducer Not tainted 6.16.0-rc6 #1 PREEMPT(none) [ 44.609635] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.610695] RIP: 0010:userfaultfd_release_all+0x3a8/0x460 <snip other registers, drop unreliable trace> [ 44.617726] Call Trace: [ 44.617926] <TASK> [ 44.619284] userfaultfd_release+0xef/0x1b0 [ 44.620976] __fput+0x3f9/0xb60 [ 44.621240] fput_close_sync+0x110/0x210 [ 44.622222] __x64_sys_close+0x8f/0x120 [ 44.622530] do_syscall_64+0x5b/0x2f0 [ 44.622840] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 44.623244] RIP: 0033:0x7f365bb3f227 Kernel panics because it detects UFFD inconsistency during userfaultfd_release_all(). Specifically, a VMA which has a valid pointer to vma->vm_userfaultfd_ctx, but no UFFD flags in vma->vm_flags. The inconsistency is caused in ksm_madvise(): when user calls madvise() with MADV_UNMEARGEABLE on a VMA that is registered for UFFD in MINOR mode, it accidentally clears all flags stored in the upper 32 bits of vma->vm_flags. Assuming x86_64 kernel build, unsigned long is 64-bit and unsigned int and int are 32-bit wide. This setup causes the following mishap during the &= ~VM_MERGEABLE assignment. VM_MERGEABLE is a 32-bit constant of type unsigned int, 0x8000'0000. After ~ is applied, it becomes 0x7fff'ffff unsigned int, which is then promoted to unsigned long before the & operation. This promotion fills upper 32 bits with leading 0s, as we're doing unsigned conversion (and even for a signed conversion, this wouldn't help as the leading bit is 0). & operation thus ends up AND-ing vm_flags with 0x0000'0000'7fff'ffff instead of intended 0xffff'ffff'7fff'ffff and hence accidentally clears the upper 32-bits of its value. Fix it by changing `VM_MERGEABLE` constant to unsigned long. Modify all other VM_* flags constants for consistency. Note: other VM_* flags are not affected: This only happens to the VM_MERGEABLE flag, as the other VM_* flags are all constants of type int and after ~ operation, they end up with leading 1 and are thus converted to unsigned long with leading 1s. Note 2: After commit 31defc3b01d9 ("userfaultfd: remove (VM_)BUG_ON()s"), this is no longer a kernel BUG, but a WARNING at the same place: [ 45.595973] WARNING: CPU: 1 PID: 2474 at mm/userfaultfd.c:2067 but the root-cause (flag-drop) remains the same. Fixes: 7677f7fd8be76 ("userfaultfd: add minor fault registration mode") Signed-off-by: Jakub Acs <acsjakub(a)amazon.de> Cc: Andrew Morton <akpm(a)linux-foundation.org> Cc: David Hildenbrand <david(a)redhat.com> Cc: Xu Xin <xu.xin16(a)zte.com.cn> Cc: Chengming Zhou <chengming.zhou(a)linux.dev> Cc: Peter Xu <peterx(a)redhat.com> Cc: Axel Rasmussen <axelrasmussen(a)google.com> Cc: linux-mm(a)kvack.org Cc: linux-kernel(a)vger.kernel.org Cc: stable(a)vger.kernel.org --- v1 -> v2: - fix by adding ul to flag constants instead of explicit cast. - drop Mike Kravetz <mike.kravetz(a)oracle.com> from cc, as the mail returned v1: https://lore.kernel.org/all/20250930063921.62354-1-acsjakub@amazon.de/ include/linux/mm.h | 72 +++++++++++++++++++++++----------------------- 1 file changed, 36 insertions(+), 36 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 1ae97a0b8ec7..26a5c0f78b36 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -246,57 +246,57 @@ extern unsigned int kobjsize(const void *objp); * vm_flags in vm_area_struct, see mm_types.h. * When changing, update also include/trace/events/mmflags.h */ -#define VM_NONE 0x00000000 +#define VM_NONE 0x00000000ul -#define VM_READ 0x00000001 /* currently active flags */ -#define VM_WRITE 0x00000002 -#define VM_EXEC 0x00000004 -#define VM_SHARED 0x00000008 +#define VM_READ 0x00000001ul /* currently active flags */ +#define VM_WRITE 0x00000002ul +#define VM_EXEC 0x00000004ul +#define VM_SHARED 0x00000008ul /* mprotect() hardcodes VM_MAYREAD >> 4 == VM_READ, and so for r/w/x bits. */ -#define VM_MAYREAD 0x00000010 /* limits for mprotect() etc */ -#define VM_MAYWRITE 0x00000020 -#define VM_MAYEXEC 0x00000040 -#define VM_MAYSHARE 0x00000080 +#define VM_MAYREAD 0x00000010ul /* limits for mprotect() etc */ +#define VM_MAYWRITE 0x00000020ul +#define VM_MAYEXEC 0x00000040ul +#define VM_MAYSHARE 0x00000080ul -#define VM_GROWSDOWN 0x00000100 /* general info on the segment */ +#define VM_GROWSDOWN 0x00000100ul /* general info on the segment */ #ifdef CONFIG_MMU -#define VM_UFFD_MISSING 0x00000200 /* missing pages tracking */ +#define VM_UFFD_MISSING 0x00000200ul /* missing pages tracking */ #else /* CONFIG_MMU */ -#define VM_MAYOVERLAY 0x00000200 /* nommu: R/O MAP_PRIVATE mapping that might overlay a file mapping */ -#define VM_UFFD_MISSING 0 +#define VM_MAYOVERLAY 0x00000200ul /* nommu: R/O MAP_PRIVATE mapping that might overlay a file mapping */ +#define VM_UFFD_MISSING 0ul #endif /* CONFIG_MMU */ -#define VM_PFNMAP 0x00000400 /* Page-ranges managed without "struct page", just pure PFN */ -#define VM_UFFD_WP 0x00001000 /* wrprotect pages tracking */ +#define VM_PFNMAP 0x00000400ul /* Page-ranges managed without "struct page", just pure PFN */ +#define VM_UFFD_WP 0x00001000ul /* wrprotect pages tracking */ -#define VM_LOCKED 0x00002000 -#define VM_IO 0x00004000 /* Memory mapped I/O or similar */ +#define VM_LOCKED 0x00002000ul +#define VM_IO 0x00004000ul /* Memory mapped I/O or similar */ /* Used by sys_madvise() */ -#define VM_SEQ_READ 0x00008000 /* App will access data sequentially */ -#define VM_RAND_READ 0x00010000 /* App will not benefit from clustered reads */ - -#define VM_DONTCOPY 0x00020000 /* Do not copy this vma on fork */ -#define VM_DONTEXPAND 0x00040000 /* Cannot expand with mremap() */ -#define VM_LOCKONFAULT 0x00080000 /* Lock the pages covered when they are faulted in */ -#define VM_ACCOUNT 0x00100000 /* Is a VM accounted object */ -#define VM_NORESERVE 0x00200000 /* should the VM suppress accounting */ -#define VM_HUGETLB 0x00400000 /* Huge TLB Page VM */ -#define VM_SYNC 0x00800000 /* Synchronous page faults */ -#define VM_ARCH_1 0x01000000 /* Architecture-specific flag */ -#define VM_WIPEONFORK 0x02000000 /* Wipe VMA contents in child. */ -#define VM_DONTDUMP 0x04000000 /* Do not include in the core dump */ +#define VM_SEQ_READ 0x00008000ul /* App will access data sequentially */ +#define VM_RAND_READ 0x00010000ul /* App will not benefit from clustered reads */ + +#define VM_DONTCOPY 0x00020000ul /* Do not copy this vma on fork */ +#define VM_DONTEXPAND 0x00040000ul /* Cannot expand with mremap() */ +#define VM_LOCKONFAULT 0x00080000ul /* Lock the pages covered when they are faulted in */ +#define VM_ACCOUNT 0x00100000ul /* Is a VM accounted object */ +#define VM_NORESERVE 0x00200000ul /* should the VM suppress accounting */ +#define VM_HUGETLB 0x00400000ul /* Huge TLB Page VM */ +#define VM_SYNC 0x00800000ul /* Synchronous page faults */ +#define VM_ARCH_1 0x01000000ul /* Architecture-specific flag */ +#define VM_WIPEONFORK 0x02000000ul /* Wipe VMA contents in child. */ +#define VM_DONTDUMP 0x04000000ul /* Do not include in the core dump */ #ifdef CONFIG_MEM_SOFT_DIRTY -# define VM_SOFTDIRTY 0x08000000 /* Not soft dirty clean area */ +# define VM_SOFTDIRTY 0x08000000ul /* Not soft dirty clean area */ #else -# define VM_SOFTDIRTY 0 +# define VM_SOFTDIRTY 0ul #endif -#define VM_MIXEDMAP 0x10000000 /* Can contain "struct page" and pure PFN pages */ -#define VM_HUGEPAGE 0x20000000 /* MADV_HUGEPAGE marked this vma */ -#define VM_NOHUGEPAGE 0x40000000 /* MADV_NOHUGEPAGE marked this vma */ -#define VM_MERGEABLE 0x80000000 /* KSM may merge identical pages */ +#define VM_MIXEDMAP 0x10000000ul /* Can contain "struct page" and pure PFN pages */ +#define VM_HUGEPAGE 0x20000000ul /* MADV_HUGEPAGE marked this vma */ +#define VM_NOHUGEPAGE 0x40000000ul /* MADV_NOHUGEPAGE marked this vma */ +#define VM_MERGEABLE 0x80000000ul /* KSM may merge identical pages */ #ifdef CONFIG_ARCH_USES_HIGH_VMA_FLAGS #define VM_HIGH_ARCH_BIT_0 32 /* bit only usable on 64-bit architectures */ -- 2.47.3 Amazon Web Services Development Center Germany GmbH Tamara-Danz-Str. 13 10243 Berlin Geschaeftsfuehrung: Christian Schlaeger Eingetragen am Amtsgericht Charlottenburg unter HRB 257764 B Sitz: Berlin Ust-ID: DE 365 538 597

2 months

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Re: [PATCH] dma-mapping: fix direction in dma_alloc direction traces

by Petr Tesarik

Cc: stable(a)vger.kernel.org (One day, I'll finally remember, I promise.) Petr T On Wed, 1 Oct 2025 08:10:28 +0200 Petr Tesarik <ptesarik(a)suse.com> wrote: > Set __entry->dir to the actual "dir" parameter of all trace events > in dma_alloc_class. This struct member was left uninitialized by > mistake. > > Signed-off-by: Petr Tesarik <ptesarik(a)suse.com> > Fixes: 3afff779a725 ("dma-mapping: trace dma_alloc/free direction") > --- > include/trace/events/dma.h | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/include/trace/events/dma.h b/include/trace/events/dma.h > index d8ddc27b6a7c8..945fcbaae77e9 100644 > --- a/include/trace/events/dma.h > +++ b/include/trace/events/dma.h > @@ -134,6 +134,7 @@ DECLARE_EVENT_CLASS(dma_alloc_class, > __entry->dma_addr = dma_addr; > __entry->size = size; > __entry->flags = flags; > + __entry->dir = dir; > __entry->attrs = attrs; > ), >

2 months

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[PATCH v3] fbdev/simplefb: Fix use after free in simplefb_detach_genpds()

by Janne Grunau

The pm_domain cleanup can not be devres managed as it uses struct simplefb_par which is allocated within struct fb_info by framebuffer_alloc(). This allocation is explicitly freed by unregister_framebuffer() in simplefb_remove(). Devres managed cleanup runs after the device remove call and thus can no longer access struct simplefb_par. Call simplefb_detach_genpds() explicitly from simplefb_destroy() like the cleanup functions for clocks and regulators. Fixes an use after free on M2 Mac mini during aperture_remove_conflicting_devices() using the downstream asahi kernel with Debian's kernel config. For unknown reasons this started to consistently dereference an invalid pointer in v6.16.3 based kernels. [ 6.736134] BUG: KASAN: slab-use-after-free in simplefb_detach_genpds+0x58/0x220 [ 6.743545] Read of size 4 at addr ffff8000304743f0 by task (udev-worker)/227 [ 6.750697] [ 6.752182] CPU: 6 UID: 0 PID: 227 Comm: (udev-worker) Tainted: G S 6.16.3-asahi+ #16 PREEMPTLAZY [ 6.752186] Tainted: [S]=CPU_OUT_OF_SPEC [ 6.752187] Hardware name: Apple Mac mini (M2, 2023) (DT) [ 6.752189] Call trace: [ 6.752190] show_stack+0x34/0x98 (C) [ 6.752194] dump_stack_lvl+0x60/0x80 [ 6.752197] print_report+0x17c/0x4d8 [ 6.752201] kasan_report+0xb4/0x100 [ 6.752206] __asan_report_load4_noabort+0x20/0x30 [ 6.752209] simplefb_detach_genpds+0x58/0x220 [ 6.752213] devm_action_release+0x50/0x98 [ 6.752216] release_nodes+0xd0/0x2c8 [ 6.752219] devres_release_all+0xfc/0x178 [ 6.752221] device_unbind_cleanup+0x28/0x168 [ 6.752224] device_release_driver_internal+0x34c/0x470 [ 6.752228] device_release_driver+0x20/0x38 [ 6.752231] bus_remove_device+0x1b0/0x380 [ 6.752234] device_del+0x314/0x820 [ 6.752238] platform_device_del+0x3c/0x1e8 [ 6.752242] platform_device_unregister+0x20/0x50 [ 6.752246] aperture_detach_platform_device+0x1c/0x30 [ 6.752250] aperture_detach_devices+0x16c/0x290 [ 6.752253] aperture_remove_conflicting_devices+0x34/0x50 ... [ 6.752343] [ 6.967409] Allocated by task 62: [ 6.970724] kasan_save_stack+0x3c/0x70 [ 6.974560] kasan_save_track+0x20/0x40 [ 6.978397] kasan_save_alloc_info+0x40/0x58 [ 6.982670] __kasan_kmalloc+0xd4/0xd8 [ 6.986420] __kmalloc_noprof+0x194/0x540 [ 6.990432] framebuffer_alloc+0xc8/0x130 [ 6.994444] simplefb_probe+0x258/0x2378 ... [ 7.054356] [ 7.055838] Freed by task 227: [ 7.058891] kasan_save_stack+0x3c/0x70 [ 7.062727] kasan_save_track+0x20/0x40 [ 7.066565] kasan_save_free_info+0x4c/0x80 [ 7.070751] __kasan_slab_free+0x6c/0xa0 [ 7.074675] kfree+0x10c/0x380 [ 7.077727] framebuffer_release+0x5c/0x90 [ 7.081826] simplefb_destroy+0x1b4/0x2c0 [ 7.085837] put_fb_info+0x98/0x100 [ 7.089326] unregister_framebuffer+0x178/0x320 [ 7.093861] simplefb_remove+0x3c/0x60 [ 7.097611] platform_remove+0x60/0x98 [ 7.101361] device_remove+0xb8/0x160 [ 7.105024] device_release_driver_internal+0x2fc/0x470 [ 7.110256] device_release_driver+0x20/0x38 [ 7.114529] bus_remove_device+0x1b0/0x380 [ 7.118628] device_del+0x314/0x820 [ 7.122116] platform_device_del+0x3c/0x1e8 [ 7.126302] platform_device_unregister+0x20/0x50 [ 7.131012] aperture_detach_platform_device+0x1c/0x30 [ 7.136157] aperture_detach_devices+0x16c/0x290 [ 7.140779] aperture_remove_conflicting_devices+0x34/0x50 ... Reported-by: Daniel Huhardeaux <tech(a)tootai.net> Cc: stable(a)vger.kernel.org Fixes: 92a511a568e44 ("fbdev/simplefb: Add support for generic power-domains") Signed-off-by: Janne Grunau <j(a)jannau.net> --- Changes in v3: - release power-domains on probe errors - set par->num_genpds when it's <= 1 - set par->num_genpds to 0 after detaching - Link to v2: https://lore.kernel.org/r/20250908-simplefb-genpd-uaf-v2-1-f88a0d9d880f@jan… Changes in v2: - reworked change due to missed use of `par->num_genpds` before setting it. Missed in testing due to mixing up FB_SIMPLE and SYSFB_SIMPLEFB. - Link to v1: https://lore.kernel.org/r/20250901-simplefb-genpd-uaf-v1-1-0d9f3a34c4dc@jan… --- drivers/video/fbdev/simplefb.c | 31 +++++++++++++++++++++++-------- 1 file changed, 23 insertions(+), 8 deletions(-) diff --git a/drivers/video/fbdev/simplefb.c b/drivers/video/fbdev/simplefb.c index 1893815dc67f4c1403eea42c0e10a7ead4d96ba9..6acf5a00c2bacfab89c3a63bab3d8b1b091a20a8 100644 --- a/drivers/video/fbdev/simplefb.c +++ b/drivers/video/fbdev/simplefb.c @@ -93,6 +93,7 @@ struct simplefb_par { static void simplefb_clocks_destroy(struct simplefb_par *par); static void simplefb_regulators_destroy(struct simplefb_par *par); +static void simplefb_detach_genpds(void *res); /* * fb_ops.fb_destroy is called by the last put_fb_info() call at the end @@ -105,6 +106,7 @@ static void simplefb_destroy(struct fb_info *info) simplefb_regulators_destroy(info->par); simplefb_clocks_destroy(info->par); + simplefb_detach_genpds(info->par); if (info->screen_base) iounmap(info->screen_base); @@ -445,13 +447,14 @@ static void simplefb_detach_genpds(void *res) if (!IS_ERR_OR_NULL(par->genpds[i])) dev_pm_domain_detach(par->genpds[i], true); } + par->num_genpds = 0; } static int simplefb_attach_genpds(struct simplefb_par *par, struct platform_device *pdev) { struct device *dev = &pdev->dev; - unsigned int i; + unsigned int i, num_genpds; int err; err = of_count_phandle_with_args(dev->of_node, "power-domains", @@ -465,26 +468,35 @@ static int simplefb_attach_genpds(struct simplefb_par *par, return err; } - par->num_genpds = err; + num_genpds = err; /* * Single power-domain devices are handled by the driver core, so * nothing to do here. */ - if (par->num_genpds <= 1) + if (num_genpds <= 1) { + par->num_genpds = num_genpds; return 0; + } - par->genpds = devm_kcalloc(dev, par->num_genpds, sizeof(*par->genpds), + par->genpds = devm_kcalloc(dev, num_genpds, sizeof(*par->genpds), GFP_KERNEL); if (!par->genpds) return -ENOMEM; - par->genpd_links = devm_kcalloc(dev, par->num_genpds, + par->genpd_links = devm_kcalloc(dev, num_genpds, sizeof(*par->genpd_links), GFP_KERNEL); if (!par->genpd_links) return -ENOMEM; + /* + * Set par->num_genpds only after genpds and genpd_links are allocated + * to exit early from simplefb_detach_genpds() without full + * initialisation. + */ + par->num_genpds = num_genpds; + for (i = 0; i < par->num_genpds; i++) { par->genpds[i] = dev_pm_domain_attach_by_id(dev, i); if (IS_ERR(par->genpds[i])) { @@ -506,9 +518,10 @@ static int simplefb_attach_genpds(struct simplefb_par *par, dev_warn(dev, "failed to link power-domain %u\n", i); } - return devm_add_action_or_reset(dev, simplefb_detach_genpds, par); + return 0; } #else +static void simplefb_detach_genpds(void *res) { } static int simplefb_attach_genpds(struct simplefb_par *par, struct platform_device *pdev) { @@ -622,18 +635,20 @@ static int simplefb_probe(struct platform_device *pdev) ret = devm_aperture_acquire_for_platform_device(pdev, par->base, par->size); if (ret) { dev_err(&pdev->dev, "Unable to acquire aperture: %d\n", ret); - goto error_regulators; + goto error_genpds; } ret = register_framebuffer(info); if (ret < 0) { dev_err(&pdev->dev, "Unable to register simplefb: %d\n", ret); - goto error_regulators; + goto error_genpds; } dev_info(&pdev->dev, "fb%d: simplefb registered!\n", info->node); return 0; +error_genpds: + simplefb_detach_genpds(par); error_regulators: simplefb_regulators_destroy(par); error_clocks: --- base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585 change-id: 20250901-simplefb-genpd-uaf-352704761a29 Best regards, -- Janne Grunau <j(a)jannau.net>

2 months

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Check this out at Amazon

by llk16 9157

Purchase this ALCHIMERA ebook, and a portion of the proceeds will help children and families in need in Gaza, Ukraine, and the DRC: Your gesture is a seed of love that will bear eternal fruit. https://a.co/d/aDuLWHN 🆘Buy this book, save a life today. Every word you read, every page you turn, becomes an act of compassion. 💔 Children cry from hunger in Gaza, Ukraine, and eastern DRC. Your purchase becomes a hot meal, a blanket, a breath of hope for those who have nothing left. This isn't just an ebook. It's a mission. A portion of the funds is sent to disaster-stricken families suffering from serious hunger. 🙏 Share this message. Give this book as a gift. Increase the number of lifesaving actions. Every share is an answered prayer. Every purchase is a helping hand. May God bless you abundantly for your generous heart. This book is in your hands. Someone's life too.

2 months

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[PATCH] ext4: fix use-after-free in extent header access

by Deepanshu Kartikey

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master syzbot reported use-after-free bugs when accessing extent headers in ext4_ext_insert_extent() and ext4_ext_correct_indexes(). These occur when the extent path structure becomes invalid during operations. The crashes show two patterns: 1. In ext4_ext_map_blocks(), the extent header can be corrupted after ext4_find_extent() returns, particularly during concurrent writes to the same file. 2. In ext4_ext_correct_indexes(), accessing path[depth] causes a use-after-free, indicating the path structure itself is corrupted. This is partially exposed by commit 665575cff098 ("filemap: move prefaulting out of hot write path") which changed timing windows in the write path, making these races more likely to occur. Fix this by adding validation checks: - In ext4_ext_map_blocks(): validate the extent header after getting the path from ext4_find_extent() - In ext4_ext_correct_indexes(): validate the path pointer before dereferencing and check extent header magic While these checks are defensive and don't address the root cause of path corruption, they prevent kernel crashes from invalid memory access. A more comprehensive fix to path lifetime management may be needed in the future. Reported-by: syzbot+9db318d6167044609878(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=9db318d6167044609878 Fixes: 665575cff098 ("filemap: move prefaulting out of hot write path") Cc: stable(a)vger.kernel.org Signed-off-by: Deepanshu Kartikey <kartikey406(a)gmail.com> --- fs/ext4/extents.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index ca5499e9412b..903578d5f68d 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -1708,7 +1708,9 @@ static int ext4_ext_correct_indexes(handle_t *handle, struct inode *inode, struct ext4_extent *ex; __le32 border; int k, err = 0; - + if (!path || depth < 0 || depth > EXT4_MAX_EXTENT_DEPTH) { + return -EFSCORRUPTED; + } eh = path[depth].p_hdr; ex = path[depth].p_ext; @@ -4200,6 +4202,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, unsigned int allocated_clusters = 0; struct ext4_allocation_request ar; ext4_lblk_t cluster_offset; + struct ext4_extent_header *eh; ext_debug(inode, "blocks %u/%u requested\n", map->m_lblk, map->m_len); trace_ext4_ext_map_blocks_enter(inode, map->m_lblk, map->m_len, flags); @@ -4212,7 +4215,12 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, } depth = ext_depth(inode); - + eh = path[depth].p_hdr; + if (!eh || le16_to_cpu(eh->eh_magic) != EXT4_EXT_MAGIC) { + EXT4_ERROR_INODE(inode, "invalid extent header after find_extent"); + err = -EFSCORRUPTED; + goto out; + } /* * consistent leaf must not be empty; * this situation is possible, though, _during_ tree modification; -- 2.43.0

2 months

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+ mm-damon-vaddr-do-not-repeat-pte_offset_map_lock-until-success.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: mm/damon/vaddr: do not repeat pte_offset_map_lock() until success has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-damon-vaddr-do-not-repeat-pte_offset_map_lock-until-success.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: SeongJae Park <sj(a)kernel.org> Subject: mm/damon/vaddr: do not repeat pte_offset_map_lock() until success Date: Mon, 29 Sep 2025 17:44:09 -0700 DAMON's virtual address space operation set implementation (vaddr) calls pte_offset_map_lock() inside the page table walk callback function. This is for reading and writing page table accessed bits. If pte_offset_map_lock() fails, it retries by returning the page table walk callback function with ACTION_AGAIN. pte_offset_map_lock() can continuously fail if the target is a pmd migration entry, though. Hence it could cause an infinite page table walk if the migration cannot be done until the page table walk is finished. This indeed caused a soft lockup when CPU hotplugging and DAMON were running in parallel. Avoid the infinite loop by simply not retrying the page table walk. DAMON is promising only a best-effort accuracy, so missing access to such pages is no problem. Link: https://lkml.kernel.org/r/20250930004410.55228-1-sj@kernel.org Fixes: 7780d04046a2 ("mm/pagewalkers: ACTION_AGAIN if pte_offset_map_lock() fails") Signed-off-by: SeongJae Park <sj(a)kernel.org> Reported-by: Xinyu Zheng <zhengxinyu6(a)huawei.com> Closes: https://lore.kernel.org/20250918030029.2652607-1-zhengxinyu6@huawei.com Acked-by: Hugh Dickins <hughd(a)google.com> Cc: <stable(a)vger.kernel.org> [6.5+] Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/damon/vaddr.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) --- a/mm/damon/vaddr.c~mm-damon-vaddr-do-not-repeat-pte_offset_map_lock-until-success +++ a/mm/damon/vaddr.c @@ -328,10 +328,8 @@ static int damon_mkold_pmd_entry(pmd_t * } pte = pte_offset_map_lock(walk->mm, pmd, addr, &ptl); - if (!pte) { - walk->action = ACTION_AGAIN; + if (!pte) return 0; - } if (!pte_present(ptep_get(pte))) goto out; damon_ptep_mkold(pte, walk->vma, addr); @@ -481,10 +479,8 @@ regular_page: #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ pte = pte_offset_map_lock(walk->mm, pmd, addr, &ptl); - if (!pte) { - walk->action = ACTION_AGAIN; + if (!pte) return 0; - } ptent = ptep_get(pte); if (!pte_present(ptent)) goto out; _ Patches currently in -mm which might be from sj(a)kernel.org are mm-damon-vaddr-do-not-repeat-pte_offset_map_lock-until-success.patch

2 months

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+ mm-rmap-fix-soft-dirty-and-uffd-wp-bit-loss-when-remapping-zero-filled-mthp-subpage-to-shared-zeropage.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: mm/rmap: fix soft-dirty and uffd-wp bit loss when remapping zero-filled mTHP subpage to shared zeropage has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-rmap-fix-soft-dirty-and-uffd-wp-bit-loss-when-remapping-zero-filled-mthp-subpage-to-shared-zeropage.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche… This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Lance Yang <lance.yang(a)linux.dev> Subject: mm/rmap: fix soft-dirty and uffd-wp bit loss when remapping zero-filled mTHP subpage to shared zeropage Date: Tue, 30 Sep 2025 16:10:40 +0800 When splitting an mTHP and replacing a zero-filled subpage with the shared zeropage, try_to_map_unused_to_zeropage() currently drops several important PTE bits. For userspace tools like CRIU, which rely on the soft-dirty mechanism for incremental snapshots, losing the soft-dirty bit means modified pages are missed, leading to inconsistent memory state after restore. As pointed out by David, the more critical uffd-wp bit is also dropped. This breaks the userfaultfd write-protection mechanism, causing writes to be silently missed by monitoring applications, which can lead to data corruption. Preserve both the soft-dirty and uffd-wp bits from the old PTE when creating the new zeropage mapping to ensure they are correctly tracked. Link: https://lkml.kernel.org/r/20250930081040.80926-1-lance.yang@linux.dev Fixes: b1f202060afe ("mm: remap unused subpages to shared zeropage when splitting isolated thp") Signed-off-by: Lance Yang <lance.yang(a)linux.dev> Suggested-by: David Hildenbrand <david(a)redhat.com> Suggested-by: Dev Jain <dev.jain(a)arm.com> Acked-by: David Hildenbrand <david(a)redhat.com> Reviewed-by: Dev Jain <dev.jain(a)arm.com> Acked-by: Zi Yan <ziy(a)nvidia.com> Cc: Alistair Popple <apopple(a)nvidia.com> Cc: Baolin Wang <baolin.wang(a)linux.alibaba.com> Cc: Barry Song <baohua(a)kernel.org> Cc: Byungchul Park <byungchul(a)sk.com> Cc: Gregory Price <gourry(a)gourry.net> Cc: "Huang, Ying" <ying.huang(a)linux.alibaba.com> Cc: Jann Horn <jannh(a)google.com> Cc: Joshua Hahn <joshua.hahnjy(a)gmail.com> Cc: Liam Howlett <liam.howlett(a)oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> Cc: Mariano Pache <npache(a)redhat.com> Cc: Mathew Brost <matthew.brost(a)intel.com> Cc: Peter Xu <peterx(a)redhat.com> Cc: Rakie Kim <rakie.kim(a)sk.com> Cc: Rik van Riel <riel(a)surriel.com> Cc: Ryan Roberts <ryan.roberts(a)arm.com> Cc: Usama Arif <usamaarif642(a)gmail.com> Cc: Vlastimil Babka <vbabka(a)suse.cz> Cc: Yu Zhao <yuzhao(a)google.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/migrate.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) --- a/mm/migrate.c~mm-rmap-fix-soft-dirty-and-uffd-wp-bit-loss-when-remapping-zero-filled-mthp-subpage-to-shared-zeropage +++ a/mm/migrate.c @@ -297,8 +297,7 @@ bool isolate_folio_to_list(struct folio } static bool try_to_map_unused_to_zeropage(struct page_vma_mapped_walk *pvmw, - struct folio *folio, - unsigned long idx) + struct folio *folio, pte_t old_pte, unsigned long idx) { struct page *page = folio_page(folio, idx); pte_t newpte; @@ -307,7 +306,7 @@ static bool try_to_map_unused_to_zeropag return false; VM_BUG_ON_PAGE(!PageAnon(page), page); VM_BUG_ON_PAGE(!PageLocked(page), page); - VM_BUG_ON_PAGE(pte_present(ptep_get(pvmw->pte)), page); + VM_BUG_ON_PAGE(pte_present(old_pte), page); if (folio_test_mlocked(folio) || (pvmw->vma->vm_flags & VM_LOCKED) || mm_forbids_zeropage(pvmw->vma->vm_mm)) @@ -323,6 +322,12 @@ static bool try_to_map_unused_to_zeropag newpte = pte_mkspecial(pfn_pte(my_zero_pfn(pvmw->address), pvmw->vma->vm_page_prot)); + + if (pte_swp_soft_dirty(old_pte)) + newpte = pte_mksoft_dirty(newpte); + if (pte_swp_uffd_wp(old_pte)) + newpte = pte_mkuffd_wp(newpte); + set_pte_at(pvmw->vma->vm_mm, pvmw->address, pvmw->pte, newpte); dec_mm_counter(pvmw->vma->vm_mm, mm_counter(folio)); @@ -365,13 +370,13 @@ static bool remove_migration_pte(struct continue; } #endif + old_pte = ptep_get(pvmw.pte); if (rmap_walk_arg->map_unused_to_zeropage && - try_to_map_unused_to_zeropage(&pvmw, folio, idx)) + try_to_map_unused_to_zeropage(&pvmw, folio, old_pte, idx)) continue; folio_get(folio); pte = mk_pte(new, READ_ONCE(vma->vm_page_prot)); - old_pte = ptep_get(pvmw.pte); entry = pte_to_swp_entry(old_pte); if (!is_migration_entry_young(entry)) _ Patches currently in -mm which might be from lance.yang(a)linux.dev are hung_task-fix-warnings-caused-by-unaligned-lock-pointers.patch mm-thp-fix-mte-tag-mismatch-when-replacing-zero-filled-subpages.patch mm-rmap-fix-soft-dirty-and-uffd-wp-bit-loss-when-remapping-zero-filled-mthp-subpage-to-shared-zeropage.patch mm-clean-up-is_guard_pte_marker.patch

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[PATCH] ext4: fix use-after-free in extent header access

by Deepanshu Kartikey

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master syzbot reported multiple use-after-free bugs when accessing extent headers in various ext4 functions. These occur because extent headers can be freed by concurrent operations while other threads still hold pointers to them. The issue is triggered by racing threads performing concurrent writes to the same file. After commit 665575cff098 ("filemap: move prefaulting out of hot write path"), the write path no longer prefaults pages in the hot path, creating a wider race window where: 1. Thread A calls ext4_find_extent() and gets a path with extent headers 2. Thread A's write attempt fails, entering the slow path 3. During the gap, Thread B modifies the extent tree, freeing nodes 4. Thread A continues using the now-freed extent headers, causing UAF Fix this by validating the extent header in ext4_find_extent() before returning the path. This ensures all callers receive a valid extent path, fixing the race at a single point rather than adding checks throughout the codebase. This addresses crashes in ext4_ext_insert_extent(), ext4_ext_binsearch(), and potentially other locations that use extent paths. Reported-by: syzbot+9db318d6167044609878(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=9db318d6167044609878 Fixes: 665575cff098 ("filemap: move prefaulting out of hot write path") Cc: stable(a)vger.kernel.org Signed-off-by: Deepanshu Kartikey <kartikey406(a)gmail.com> --- fs/ext4/extents.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index ca5499e9412b..04ceae5b0a34 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4200,6 +4200,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, unsigned int allocated_clusters = 0; struct ext4_allocation_request ar; ext4_lblk_t cluster_offset; + struct ext4_extent_header *eh; ext_debug(inode, "blocks %u/%u requested\n", map->m_lblk, map->m_len); trace_ext4_ext_map_blocks_enter(inode, map->m_lblk, map->m_len, flags); @@ -4212,7 +4213,12 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode, } depth = ext_depth(inode); - + eh = path[depth].p_hdr; + if (!eh || le16_to_cpu(eh->eh_magic) != EXT4_EXT_MAGIC) { + EXT4_ERROR_INODE(inode, "invalid extent header after find_extent"); + err = -EFSCORRUPTED; + goto out; + } /* * consistent leaf must not be empty; * this situation is possible, though, _during_ tree modification; -- 2.43.0

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