May 2019 - Linux-stable-mirror

[PATCH v4] tpm: fix an invalid condition in tpm_common_poll

by Tadeusz Struk

The poll condition should only check response_length, because reads should only be issued if there is data to read. The response_read flag only prevents double writes. The problem was that the write set the response_read to false, enqued a tpm job, and returned. Then application called poll which checked the response_read flag and returned EPOLLIN. Then the application called read, but got nothing. After all that the async_work kicked in. Added also mutex_lock around the poll check to prevent other possible race conditions. Cc: stable(a)vger.kernel.org Fixes: 9488585b21bef0df12 ("tpm: add support for partial reads") Reported-by: Mantas Mikulėnas <grawity(a)gmail.com> Tested-by: Mantas Mikulėnas <grawity(a)gmail.com> Signed-off-by: Tadeusz Struk <tadeusz.struk(a)intel.com> --- drivers/char/tpm/tpm-dev-common.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/char/tpm/tpm-dev-common.c b/drivers/char/tpm/tpm-dev-common.c index 5eecad233ea1..744b0237300a 100644 --- a/drivers/char/tpm/tpm-dev-common.c +++ b/drivers/char/tpm/tpm-dev-common.c @@ -203,12 +203,19 @@ __poll_t tpm_common_poll(struct file *file, poll_table *wait) __poll_t mask = 0; poll_wait(file, &priv->async_wait, wait); + mutex_lock(&priv->buffer_mutex); - if (!priv->response_read || priv->response_length) + /* + * The response_length indicates if there is still response + * (or part of it) to be consumed. Partial reads decrease it + * by the number of bytes read, and write resets it the zero. + */ + if (priv->response_length) mask = EPOLLIN | EPOLLRDNORM; else mask = EPOLLOUT | EPOLLWRNORM; + mutex_unlock(&priv->buffer_mutex); return mask; }

5 years

5
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[PATCH] tpm/tpm_i2c_atmel: Return -E2BIG when the transfer is incomplete

by Jarkko Sakkinen

commit 442601e87a4769a8daba4976ec3afa5222ca211d upstream Return -E2BIG when the transfer is incomplete. The upper layer does not retry, so not doing that is incorrect behaviour. Cc: stable(a)vger.kernel.org Fixes: a2871c62e186 ("tpm: Add support for Atmel I2C TPMs") Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen(a)linux.intel.com> Reviewed-by: Stefan Berger <stefanb(a)linux.ibm.com> Reviewed-by: Jerry Snitselaar <jsnitsel(a)redhat.com> --- backport v4.9.99 drivers/char/tpm/tpm_i2c_atmel.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/char/tpm/tpm_i2c_atmel.c b/drivers/char/tpm/tpm_i2c_atmel.c index 95ce2e9ccdc6..cc4e642d3180 100644 --- a/drivers/char/tpm/tpm_i2c_atmel.c +++ b/drivers/char/tpm/tpm_i2c_atmel.c @@ -65,7 +65,15 @@ static int i2c_atmel_send(struct tpm_chip *chip, u8 *buf, size_t len) dev_dbg(&chip->dev, "%s(buf=%*ph len=%0zx) -> sts=%d\n", __func__, (int)min_t(size_t, 64, len), buf, len, status); - return status; + + if (status < 0) + return status; + + /* The upper layer does not support incomplete sends. */ + if (status != len) + return -E2BIG; + + return 0; } static int i2c_atmel_recv(struct tpm_chip *chip, u8 *buf, size_t count) -- 2.20.1

5 years

2
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[PATCH v7 00/12] mm: Sub-section memory hotplug support

by Dan Williams

Changes since v6 [1]: - Rebase on next-20190501, no related conflicts or updates - Fix boot crash due to inaccurate setup of the initial section ->map_active bitmask caused by multiple activations of the same section. (Jane, Jeff) - Fix pmem startup crash when devm_memremap_pages() needs to instantiate a new section. (Jeff) - Drop mhp_restrictions for the __remove_pages() path in favor of find_memory_block() to detect cases where section-aligned remove is required (David) - Add "[PATCH v7 06/12] mm/hotplug: Kill is_dev_zone() usage in __remove_pages()" - Cleanup shrink_{zone,pgdat}_span to remove no longer necessary @ms section variables. (Oscar) - Add subsection_check() to the __add_pages() path to prevent inadvertent sub-section misuse. [1]: https://lore.kernel.org/lkml/155552633539.2015392.2477781120122237934.stgit… --- [merge logistics] Hi Andrew, I believe this is ready for another spin in -mm now that the boot regression has been squashed. In a chat with Michal last night at LSF/MM I submitted to his assertion that the boot regression validates the general concern that there were/are subtle dependencies on sections beyond what I found to date by code inspection. Of course I want to relieve the pain that the section constraint inflicts on libnvdimm and devm_memremap_pages() as soon as possible (i.e. v5.2), but deferment to v5.3 to give Michal time to do an in-depth look is also acceptable. --- [cover letter] The memory hotplug section is an arbitrary / convenient unit for memory hotplug. 'Section-size' units have bled into the user interface ('memblock' sysfs) and can not be changed without breaking existing userspace. The section-size constraint, while mostly benign for typical memory hotplug, has and continues to wreak havoc with 'device-memory' use cases, persistent memory (pmem) in particular. Recall that pmem uses devm_memremap_pages(), and subsequently arch_add_memory(), to allocate a 'struct page' memmap for pmem. However, it does not use the 'bottom half' of memory hotplug, i.e. never marks pmem pages online and never exposes the userspace memblock interface for pmem. This leaves an opening to redress the section-size constraint. To date, the libnvdimm subsystem has attempted to inject padding to satisfy the internal constraints of arch_add_memory(). Beyond complicating the code, leading to bugs [2], wasting memory, and limiting configuration flexibility, the padding hack is broken when the platform changes this physical memory alignment of pmem from one boot to the next. Device failure (intermittent or permanent) and physical reconfiguration are events that can cause the platform firmware to change the physical placement of pmem on a subsequent boot, and device failure is an everyday event in a data-center. It turns out that sections are only a hard requirement of the user-facing interface for memory hotplug and with a bit more infrastructure sub-section arch_add_memory() support can be added for kernel internal usages like devm_memremap_pages(). Here is an analysis of the current design assumptions in the current code and how they are addressed in the new implementation: Current design assumptions: - Sections that describe boot memory (early sections) are never unplugged / removed. - pfn_valid(), in the CONFIG_SPARSEMEM_VMEMMAP=y, case devolves to a valid_section() check - __add_pages() and helper routines assume all operations occur in PAGES_PER_SECTION units. - The memblock sysfs interface only comprehends full sections New design assumptions: - Sections are instrumented with a sub-section bitmask to track (on x86) individual 2MB sub-divisions of a 128MB section. - Partially populated early sections can be extended with additional sub-sections, and those sub-sections can be removed with arch_remove_memory(). With this in place we no longer lose usable memory capacity to padding. - pfn_valid() is updated to look deeper than valid_section() to also check the active-sub-section mask. This indication is in the same cacheline as the valid_section() so the performance impact is expected to be negligible. So far the lkp robot has not reported any regressions. - Outside of the core vmemmap population routines which are replaced, other helper routines like shrink_{zone,pgdat}_span() are updated to handle the smaller granularity. Core memory hotplug routines that deal with online memory are not touched. - The existing memblock sysfs user api guarantees / assumptions are not touched since this capability is limited to !online !memblock-sysfs-accessible sections. Meanwhile the issue reports continue to roll in from users that do not understand when and how the 128MB constraint will bite them. The current implementation relied on being able to support at least one misaligned namespace, but that immediately falls over on any moderately complex namespace creation attempt. Beyond the initial problem of 'System RAM' colliding with pmem, and the unsolvable problem of physical alignment changes, Linux is now being exposed to platforms that collide pmem ranges with other pmem ranges by default [3]. In short, devm_memremap_pages() has pushed the venerable section-size constraint past the breaking point, and the simplicity of section-aligned arch_add_memory() is no longer tenable. These patches are exposed to the kbuild robot on my libnvdimm-pending branch [4], and a preview of the unit test for this functionality is available on the 'subsection-pending' branch of ndctl [5]. [2]: https://lore.kernel.org/r/155000671719.348031.2347363160141119237.stgit@dwi… [3]: https://github.com/pmem/ndctl/issues/76 [4]: https://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm.git/log/?h=libn… [5]: https://github.com/pmem/ndctl/commit/7c59b4867e1c --- Dan Williams (12): mm/sparsemem: Introduce struct mem_section_usage mm/sparsemem: Introduce common definitions for the size and mask of a section mm/sparsemem: Add helpers track active portions of a section at boot mm/hotplug: Prepare shrink_{zone,pgdat}_span for sub-section removal mm/sparsemem: Convert kmalloc_section_memmap() to populate_section_memmap() mm/hotplug: Kill is_dev_zone() usage in __remove_pages() mm: Kill is_dev_zone() helper mm/sparsemem: Prepare for sub-section ranges mm/sparsemem: Support sub-section hotplug mm/devm_memremap_pages: Enable sub-section remap libnvdimm/pfn: Fix fsdax-mode namespace info-block zero-fields libnvdimm/pfn: Stop padding pmem namespaces to section alignment arch/x86/mm/init_64.c | 4 drivers/nvdimm/dax_devs.c | 2 drivers/nvdimm/pfn.h | 12 - drivers/nvdimm/pfn_devs.c | 93 +++------- include/linux/memory_hotplug.h | 7 - include/linux/mm.h | 4 include/linux/mmzone.h | 72 ++++++-- kernel/memremap.c | 63 +++---- mm/hmm.c | 2 mm/memory_hotplug.c | 172 ++++++++++--------- mm/page_alloc.c | 8 + mm/sparse-vmemmap.c | 21 ++ mm/sparse.c | 370 ++++++++++++++++++++++++++++------------ 13 files changed, 490 insertions(+), 340 deletions(-)

5 years

1
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[PATCH 4.19 000/100] 4.19.38-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 4.19.38 release. There are 100 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 May 2019 11:34:55 AM UTC. 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/v4.x/stable-review/patch-4.19.38-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.19.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 4.19.38-rc1 Jakub Kicinski <jakub.kicinski(a)netronome.com> net/tls: don't leak IV and record seq when offload fails Jakub Kicinski <jakub.kicinski(a)netronome.com> net/tls: avoid potential deadlock in tls_set_device_offload_rx() Maxim Mikityanskiy <maximmi(a)mellanox.com> net/mlx5e: Fix use-after-free after xdp_return_frame Maxim Mikityanskiy <maximmi(a)mellanox.com> net/mlx5e: Fix the max MTU check in case of XDP Petr Machata <petrm(a)mellanox.com> mlxsw: spectrum: Put MC TCs into DWRR mode Ido Schimmel <idosch(a)mellanox.com> mlxsw: pci: Reincrease PCI reset timeout Jun Xiao <xiaojun2(a)hisilicon.com> net: hns: Fix WARNING when hns modules installed Hangbin Liu <liuhangbin(a)gmail.com> team: fix possible recursive locking when add slaves Su Bao Cheng <baocheng.su(a)siemens.com> stmmac: pci: Adjust IOT2000 matching Jakub Kicinski <jakub.kicinski(a)netronome.com> net/tls: fix refcount adjustment in fallback Vinod Koul <vkoul(a)kernel.org> net: stmmac: move stmmac_check_ether_addr() to driver probe Eric Dumazet <edumazet(a)google.com> net/rose: fix unbound loop in rose_loopback_timer() Zhu Yanjun <yanjun.zhu(a)oracle.com> net: rds: exchange of 8K and 1M pool Erez Alfasi <ereza(a)mellanox.com> net/mlx5e: ethtool, Remove unsupported SFP EEPROM high pages query Amit Cohen <amitc(a)mellanox.com> mlxsw: spectrum: Fix autoneg status in ethtool ZhangXiaoxu <zhangxiaoxu5(a)huawei.com> ipv4: set the tcp_min_rtt_wlen range from 0 to one day Eric Dumazet <edumazet(a)google.com> ipv4: add sanity checks in ipv4_link_failure() Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> x86/fpu: Don't export __kernel_fpu_{begin,end}() Jan Kara <jack(a)suse.cz> mm: Fix warning in insert_pfn() Daniel Borkmann <daniel(a)iogearbox.net> x86/retpolines: Disable switch jump tables when retpolines are enabled Daniel Borkmann <daniel(a)iogearbox.net> x86, retpolines: Raise limit for generating indirect calls from switch-case Al Viro <viro(a)zeniv.linux.org.uk> Fix aio_poll() races Al Viro <viro(a)zeniv.linux.org.uk> aio: store event at final iocb_put() Al Viro <viro(a)zeniv.linux.org.uk> aio: keep io_event in aio_kiocb Al Viro <viro(a)zeniv.linux.org.uk> aio: fold lookup_kiocb() into its sole caller Linus Torvalds <torvalds(a)linux-foundation.org> pin iocb through aio. Linus Torvalds <torvalds(a)linux-foundation.org> aio: simplify - and fix - fget/fput for io_submit() Mike Marshall <hubcap(a)omnibond.com> aio: initialize kiocb private in case any filesystems expect it. Jens Axboe <axboe(a)kernel.dk> aio: abstract out io_event filler helper Jens Axboe <axboe(a)kernel.dk> aio: split out iocb copy from io_submit_one() Jens Axboe <axboe(a)kernel.dk> aio: use iocb_put() instead of open coding it Jens Axboe <axboe(a)kernel.dk> aio: don't zero entire aio_kiocb aio_get_req() Christoph Hellwig <hch(a)lst.de> aio: separate out ring reservation from req allocation Jens Axboe <axboe(a)kernel.dk> aio: use assigned completion handler Christoph Hellwig <hch(a)lst.de> aio: clear IOCB_HIPRI Eric Dumazet <edumazet(a)google.com> rxrpc: fix race condition in rxrpc_input_packet() Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> net/rds: Check address length before reading address family YueHaibing <yuehaibing(a)huawei.com> net: netrom: Fix error cleanup path of nr_proto_init Xin Long <lucien.xin(a)gmail.com> tipc: check link name with right length in tipc_nl_compat_link_set Xin Long <lucien.xin(a)gmail.com> tipc: check bearer name with right length in tipc_nl_compat_bearer_enable Yue Haibing <yuehaibing(a)huawei.com> fm10k: Fix a potential NULL pointer dereference Florian Westphal <fw(a)strlen.de> netfilter: ebtables: CONFIG_COMPAT: drop a bogus WARN_ON Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> NFS: Forbid setting AF_INET6 to "struct sockaddr_in"->sin_family. luca abeni <luca.abeni(a)santannapisa.it> sched/deadline: Correctly handle active 0-lag timers Todd Kjos <tkjos(a)android.com> binder: fix handling of misaligned binder object Tetsuo Handa <penguin-kernel(a)i-love.sakura.ne.jp> workqueue: Try to catch flush_work() without INIT_WORK(). YueHaibing <yuehaibing(a)huawei.com> fs/proc/proc_sysctl.c: Fix a NULL pointer dereference Alexander Shishkin <alexander.shishkin(a)linux.intel.com> intel_th: gth: Fix an off-by-one in output unassigning Linus Torvalds <torvalds(a)linux-foundation.org> slip: make slhc_free() silently accept an error pointer Kai-Heng Feng <kai.heng.feng(a)canonical.com> USB: Consolidate LPM checks to avoid enabling LPM twice Kai-Heng Feng <kai.heng.feng(a)canonical.com> USB: Add new USB LPM helpers Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> drm/vc4: Fix compilation error reported by kbuild test bot Dave Airlie <airlied(a)redhat.com> Revert "drm/i915/fbdev: Actually configure untiled displays" Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> drm/vc4: Fix memory leak during gpu reset. Michael Ellerman <mpe(a)ellerman.id.au> powerpc/mm/radix: Make Radix require HUGETLB_PAGE Ard Biesheuvel <ard.biesheuvel(a)linaro.org> ARM: 8857/1: efi: enable CP15 DMB instructions before cleaning the cache Achim Dahlhoff <Achim.Dahlhoff(a)de.bosch.com> dmaengine: sh: rcar-dmac: Fix glitch in dmaengine_tx_status Dirk Behme <dirk.behme(a)de.bosch.com> dmaengine: sh: rcar-dmac: With cyclic DMA residue 0 is valid Alex Williamson <alex.williamson(a)redhat.com> vfio/type1: Limit DMA mappings per container Lucas Stach <l.stach(a)pengutronix.de> Input: synaptics-rmi4 - write config register values to the right offset Harry Pan <harry.pan(a)intel.com> perf/x86/intel: Update KBL Package C-state events to also include PC8/PC9/PC10 counters NeilBrown <neilb(a)suse.com> sunrpc: don't mark uninitialised items as VALID. Trond Myklebust <trondmy(a)gmail.com> nfsd: Don't release the callback slot unless it was actually held Yan, Zheng <zyan(a)redhat.com> ceph: fix ci->i_head_snapc leak Jeff Layton <jlayton(a)kernel.org> ceph: ensure d_name stability in ceph_dentry_hash() Jeff Layton <jlayton(a)kernel.org> ceph: only use d_name directly when parent is locked Xie XiuQi <xiexiuqi(a)huawei.com> sched/numa: Fix a possible divide-by-zero Jason Gunthorpe <jgg(a)ziepe.ca> RDMA/mlx5: Do not allow the user to write to the clock page Josh Collier <josh.d.collier(a)intel.com> IB/rdmavt: Fix frwr memory registration Peter Zijlstra <peterz(a)infradead.org> trace: Fix preempt_enable_no_resched() abuse Aurelien Jarno <aurelien(a)aurel32.net> MIPS: scall64-o32: Fix indirect syscall number load YueHaibing <yuehaibing(a)huawei.com> lib/Kconfig.debug: fix build error without CONFIG_BLOCK Jérôme Glisse <jglisse(a)redhat.com> zram: pass down the bvec we need to read into in the work struct Baolin Wang <baolin.wang(a)linaro.org> gpio: eic: sprd: Fix incorrect irq type setting for the sync EIC Jann Horn <jannh(a)google.com> tracing: Fix buffer_ref pipe ops Wenwen Wang <wang6495(a)umn.edu> tracing: Fix a memory leak by early error exit in trace_pid_write() Frank Sorenson <sorenson(a)redhat.com> cifs: do not attempt cifs operation on smb2+ rename error Ronnie Sahlberg <lsahlber(a)redhat.com> cifs: fix memory leak in SMB2_read Heiner Kallweit <hkallweit1(a)gmail.com> net: dsa: mv88e6xxx: add call to mv88e6xxx_ports_cmode_init to probe for new DSA framework Takashi Iwai <tiwai(a)suse.de> ALSA: hda/ca0132 - Fix build error without CONFIG_PCI Christophe Leroy <christophe.leroy(a)c-s.fr> powerpc/vdso32: fix CLOCK_MONOTONIC on PPC64 Andrea Claudi <aclaudi(a)redhat.com> ipvs: fix warning on unused variable Adalbert Lazăr <alazar(a)bitdefender.com> vsock/virtio: fix kernel panic from virtio_transport_reset_no_sock Damian Kos <dkos(a)cadence.com> drm/rockchip: fix for mailbox read validation. Dongli Zhang <dongli.zhang(a)oracle.com> loop: do not print warn message if partition scan is successful Xin Long <lucien.xin(a)gmail.com> tipc: handle the err returned from cmd header function Dan Carpenter <dan.carpenter(a)oracle.com> ext4: fix some error pointer dereferences Antoine Tenart <antoine.tenart(a)bootlin.com> net: mvpp2: fix validate for PPv2.1 Thomas Falcon <tlfalcon(a)linux.ibm.com> net/ibmvnic: Fix RTNL deadlock during device reset Pablo Neira Ayuso <pablo(a)netfilter.org> netfilter: nf_tables: bogus EBUSY in helper removal from transaction Pablo Neira Ayuso <pablo(a)netfilter.org> netfilter: nf_tables: bogus EBUSY when deleting set after flush Pablo Neira Ayuso <pablo(a)netfilter.org> netfilter: nf_tables: fix set double-free in abort path Pablo Neira Ayuso <pablo(a)netfilter.org> netfilter: nft_compat: use .release_ops and remove list of extension Florian Westphal <fw(a)strlen.de> netfilter: nft_compat: don't use refcount_inc on newly allocated entry Pablo Neira Ayuso <pablo(a)netfilter.org> netfilter: nf_tables: unbind set in rule from commit path Florian Westphal <fw(a)strlen.de> netfilter: nf_tables: warn when expr implements only one of activate/deactivate Florian Westphal <fw(a)strlen.de> netfilter: nft_compat: destroy function must not have side effects Florian Westphal <fw(a)strlen.de> netfilter: nf_tables: split set destruction in deactivate and destroy phase Florian Westphal <fw(a)strlen.de> netfilter: nft_compat: make lists per netns Florian Westphal <fw(a)strlen.de> netfilter: nft_compat: use refcnt_t type for nft_xt reference count ------------- Diffstat: Documentation/networking/ip-sysctl.txt | 1 + Makefile | 4 +- arch/arm/boot/compressed/head.S | 16 +- arch/mips/kernel/scall64-o32.S | 2 +- arch/powerpc/configs/skiroot_defconfig | 1 + arch/powerpc/kernel/vdso32/gettimeofday.S | 2 +- arch/powerpc/platforms/Kconfig.cputype | 2 +- arch/x86/Makefile | 9 + arch/x86/events/intel/cstate.c | 10 +- arch/x86/include/asm/efi.h | 6 +- arch/x86/include/asm/fpu/api.h | 15 +- arch/x86/kernel/fpu/core.c | 6 +- drivers/android/binder_alloc.c | 18 +- drivers/block/loop.c | 5 +- drivers/block/zram/zram_drv.c | 5 +- drivers/dma/sh/rcar-dmac.c | 30 +- drivers/gpio/gpio-eic-sprd.c | 1 + drivers/gpu/drm/i915/intel_fbdev.c | 12 +- drivers/gpu/drm/rockchip/cdn-dp-reg.c | 2 +- drivers/gpu/drm/vc4/vc4_crtc.c | 2 +- drivers/hwtracing/intel_th/gth.c | 2 +- drivers/infiniband/hw/mlx5/main.c | 2 + drivers/infiniband/sw/rdmavt/mr.c | 17 +- drivers/input/rmi4/rmi_f11.c | 2 +- drivers/net/dsa/mv88e6xxx/chip.c | 1 + drivers/net/ethernet/hisilicon/hns/hns_enet.c | 15 +- drivers/net/ethernet/ibm/ibmvnic.c | 2 +- drivers/net/ethernet/intel/fm10k/fm10k_main.c | 2 + drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 2 +- drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c | 24 +- drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h | 3 +- .../net/ethernet/mellanox/mlx5/core/en_ethtool.c | 2 +- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 5 +- drivers/net/ethernet/mellanox/mlx5/core/port.c | 4 - drivers/net/ethernet/mellanox/mlxsw/pci_hw.h | 2 +- drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 6 +- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 +- drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c | 8 +- drivers/net/slip/slhc.c | 2 +- drivers/net/team/team.c | 7 + drivers/usb/core/driver.c | 23 +- drivers/usb/core/hub.c | 16 +- drivers/usb/core/message.c | 3 +- drivers/usb/core/sysfs.c | 5 +- drivers/usb/core/usb.h | 10 +- drivers/vfio/vfio_iommu_type1.c | 14 + fs/aio.c | 366 ++++++++++----------- fs/ceph/dir.c | 6 +- fs/ceph/mds_client.c | 70 +++- fs/ceph/snap.c | 7 +- fs/cifs/inode.c | 4 + fs/cifs/smb2pdu.c | 1 + fs/ext4/xattr.c | 3 + fs/nfs/super.c | 3 +- fs/nfsd/nfs4callback.c | 8 +- fs/nfsd/state.h | 1 + fs/proc/proc_sysctl.c | 6 +- fs/splice.c | 4 +- include/linux/fs.h | 8 +- include/linux/pipe_fs_i.h | 1 + include/net/netfilter/nf_tables.h | 29 +- include/net/netrom.h | 2 +- kernel/sched/deadline.c | 3 +- kernel/sched/fair.c | 4 + kernel/trace/ring_buffer.c | 2 +- kernel/trace/trace.c | 33 +- kernel/workqueue.c | 3 + lib/Kconfig.debug | 1 + mm/memory.c | 9 +- net/bridge/netfilter/ebtables.c | 3 +- net/ipv4/route.c | 32 +- net/ipv4/sysctl_net_ipv4.c | 5 +- net/netfilter/ipvs/ip_vs_ctl.c | 3 +- net/netfilter/nf_tables_api.c | 108 ++++-- net/netfilter/nft_compat.c | 192 +++-------- net/netfilter/nft_dynset.c | 22 +- net/netfilter/nft_immediate.c | 6 +- net/netfilter/nft_lookup.c | 21 +- net/netfilter/nft_objref.c | 40 ++- net/netrom/af_netrom.c | 76 +++-- net/netrom/nr_loopback.c | 2 +- net/netrom/nr_route.c | 2 +- net/netrom/sysctl_net_netrom.c | 5 +- net/rds/af_rds.c | 3 + net/rds/bind.c | 2 + net/rds/ib_fmr.c | 11 + net/rds/ib_rdma.c | 3 - net/rose/rose_loopback.c | 27 +- net/rxrpc/input.c | 12 +- net/rxrpc/local_object.c | 3 +- net/sunrpc/cache.c | 3 + net/tipc/netlink_compat.c | 24 +- net/tls/tls_device.c | 4 +- net/tls/tls_device_fallback.c | 13 +- net/tls/tls_main.c | 5 +- net/tls/tls_sw.c | 3 + net/vmw_vsock/virtio_transport_common.c | 22 +- sound/pci/hda/patch_ca0132.c | 4 +- 98 files changed, 969 insertions(+), 593 deletions(-)

5 years

8
107
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[PATCH] power: supply: axp288_fuel_gauge: Add ACEPC T8 and T11 mini PCs to the blacklist

by Hans de Goede

The ACEPC T8 and T11 Cherry Trail Z8350 mini PCs use an AXP288 and as PCs, rather then portables, they does not have a battery. Still for some reason the AXP288 not only thinks there is a battery, it actually thinks it is discharging while the PC is running, slowly going to 0% full, causing userspace to shutdown the system due to the battery being critically low after a while. This commit adds the ACEPC T8 and T11 to the axp288 fuel-gauge driver blacklist, so that we stop reporting bogus battery readings on this device. BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1690852 Cc: stable(a)vger.kernel.org Signed-off-by: Hans de Goede <hdegoede(a)redhat.com> --- drivers/power/supply/axp288_fuel_gauge.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/power/supply/axp288_fuel_gauge.c b/drivers/power/supply/axp288_fuel_gauge.c index 9ff2461820d8..368281bc0d2b 100644 --- a/drivers/power/supply/axp288_fuel_gauge.c +++ b/drivers/power/supply/axp288_fuel_gauge.c @@ -685,6 +685,26 @@ static void fuel_gauge_init_irq(struct axp288_fg_info *info) * detection reports one despite it not being there. */ static const struct dmi_system_id axp288_fuel_gauge_blacklist[] = { + { + /* ACEPC T8 Cherry Trail Z8350 mini PC */ + .matches = { + DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"), + DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "T8"), + /* also match on somewhat unique bios-version */ + DMI_EXACT_MATCH(DMI_BIOS_VERSION, "1.000"), + }, + }, + { + /* ACEPC T11 Cherry Trail Z8350 mini PC */ + .matches = { + DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "Cherry Trail CR"), + DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "T11"), + /* also match on somewhat unique bios-version */ + DMI_EXACT_MATCH(DMI_BIOS_VERSION, "1.000"), + }, + }, { /* Intel Cherry Trail Compute Stick, Windows version */ .matches = { -- 2.21.0

5 years

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[RFC][PATCH 2/2] ftrace/x86: Emulate call function while updating in breakpoint handler

by Steven Rostedt

From: Peter Zijlstra <peterz(a)infradead.org> Nicolai Stange discovered[1] that if live kernel patching is enabled, and the function tracer started tracing the same function that was patched, the conversion of the fentry call site during the translation of going from calling the live kernel patch trampoline to the iterator trampoline, would have as slight window where it didn't call anything. As live kernel patching depends on ftrace to always call its code (to prevent the function being traced from being called, as it will redirect it). This small window would allow the old buggy function to be called, and this can cause undesirable results. Nicolai submitted new patches[2] but these were controversial. As this is similar to the static call emulation issues that came up a while ago[3]. But after some debate[4][5] adding a gap in the stack when entering the breakpoint handler allows for pushing the return address onto the stack to easily emulate a call. [1] http://lkml.kernel.org/r/20180726104029.7736-1-nstange@suse.de [2] http://lkml.kernel.org/r/20190427100639.15074-1-nstange@suse.de [3] http://lkml.kernel.org/r/3cf04e113d71c9f8e4be95fb84a510f085aa4afa.154171145… [4] http://lkml.kernel.org/r/CAHk-=wh5OpheSU8Em_Q3Hg8qw_JtoijxOdPtHru6d+5K8TWM=… [5] http://lkml.kernel.org/r/CAHk-=wjvQxY4DvPrJ6haPgAa6b906h=MwZXO6G8OtiTGe=N7_… Cc: Andy Lutomirski <luto(a)kernel.org> Cc: Nicolai Stange <nstange(a)suse.de> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: Ingo Molnar <mingo(a)redhat.com> Cc: Borislav Petkov <bp(a)alien8.de> Cc: "H. Peter Anvin" <hpa(a)zytor.com> Cc: the arch/x86 maintainers <x86(a)kernel.org> Cc: Josh Poimboeuf <jpoimboe(a)redhat.com> Cc: Jiri Kosina <jikos(a)kernel.org> Cc: Miroslav Benes <mbenes(a)suse.cz> Cc: Petr Mladek <pmladek(a)suse.com> Cc: Joe Lawrence <joe.lawrence(a)redhat.com> Cc: Shuah Khan <shuah(a)kernel.org> Cc: Konrad Rzeszutek Wilk <konrad.wilk(a)oracle.com> Cc: Tim Chen <tim.c.chen(a)linux.intel.com> Cc: Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> Cc: Mimi Zohar <zohar(a)linux.ibm.com> Cc: Juergen Gross <jgross(a)suse.com> Cc: Nick Desaulniers <ndesaulniers(a)google.com> Cc: Nayna Jain <nayna(a)linux.ibm.com> Cc: Masahiro Yamada <yamada.masahiro(a)socionext.com> Cc: Joerg Roedel <jroedel(a)suse.de> Cc: "open list:KERNEL SELFTEST FRAMEWORK" <linux-kselftest(a)vger.kernel.org> Cc: stable(a)vger.kernel.org Fixes: b700e7f03df5 ("livepatch: kernel: add support for live patching") Signed-off-by: *** Need SoB From Peter Zijlstra *** Signed-off-by: Steven Rostedt (VMware) <rostedt(a)goodmis.org> --- arch/x86/kernel/ftrace.c | 25 ++++++++++++++++++++----- 1 file changed, 20 insertions(+), 5 deletions(-) diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index ef49517f6bb2..fd152f5a937b 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -29,6 +29,7 @@ #include <asm/kprobes.h> #include <asm/ftrace.h> #include <asm/nops.h> +#include <asm/text-patching.h> #ifdef CONFIG_DYNAMIC_FTRACE @@ -231,6 +232,7 @@ int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr, } static unsigned long ftrace_update_func; +static unsigned long ftrace_update_func_call; static int update_ftrace_func(unsigned long ip, void *new) { @@ -259,6 +261,8 @@ int ftrace_update_ftrace_func(ftrace_func_t func) unsigned char *new; int ret; + ftrace_update_func_call = (unsigned long)func; + new = ftrace_call_replace(ip, (unsigned long)func); ret = update_ftrace_func(ip, new); @@ -294,13 +298,21 @@ int ftrace_int3_handler(struct pt_regs *regs) if (WARN_ON_ONCE(!regs)) return 0; - ip = regs->ip - 1; - if (!ftrace_location(ip) && !is_ftrace_caller(ip)) - return 0; + ip = regs->ip - INT3_INSN_SIZE; - regs->ip += MCOUNT_INSN_SIZE - 1; + if (ftrace_location(ip)) { + int3_emulate_call(regs, (unsigned long)ftrace_regs_caller); + return 1; + } else if (is_ftrace_caller(ip)) { + if (!ftrace_update_func_call) { + int3_emulate_jmp(regs, ip + CALL_INSN_SIZE); + return 1; + } + int3_emulate_call(regs, ftrace_update_func_call); + return 1; + } - return 1; + return 0; } NOKPROBE_SYMBOL(ftrace_int3_handler); @@ -859,6 +871,8 @@ void arch_ftrace_update_trampoline(struct ftrace_ops *ops) func = ftrace_ops_get_func(ops); + ftrace_update_func_call = (unsigned long)func; + /* Do a safe modify in case the trampoline is executing */ new = ftrace_call_replace(ip, (unsigned long)func); ret = update_ftrace_func(ip, new); @@ -960,6 +974,7 @@ static int ftrace_mod_jmp(unsigned long ip, void *func) { unsigned char *new; + ftrace_update_func_call = 0UL; new = ftrace_jmp_replace(ip, (unsigned long)func); return update_ftrace_func(ip, new); -- 2.20.1

5 years

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[PATCH 4.14 00/53] 4.14.115-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 4.14.115 release. There are 53 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 May 2019 11:34:49 AM UTC. 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/v4.x/stable-review/patch-4.14.115-r… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.14.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 4.14.115-rc1 ZhangXiaoxu <zhangxiaoxu5(a)huawei.com> ipv4: set the tcp_min_rtt_wlen range from 0 to one day Eric Dumazet <edumazet(a)google.com> net/rose: fix unbound loop in rose_loopback_timer() Kees Cook <keescook(a)chromium.org> net/rose: Convert timers to use timer_setup() Hangbin Liu <liuhangbin(a)gmail.com> team: fix possible recursive locking when add slaves Su Bao Cheng <baocheng.su(a)siemens.com> stmmac: pci: Adjust IOT2000 matching Vinod Koul <vkoul(a)kernel.org> net: stmmac: move stmmac_check_ether_addr() to driver probe Zhu Yanjun <yanjun.zhu(a)oracle.com> net: rds: exchange of 8K and 1M pool Erez Alfasi <ereza(a)mellanox.com> net/mlx5e: ethtool, Remove unsupported SFP EEPROM high pages query Amit Cohen <amitc(a)mellanox.com> mlxsw: spectrum: Fix autoneg status in ethtool Eric Dumazet <edumazet(a)google.com> ipv4: add sanity checks in ipv4_link_failure() Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Revert "block/loop: Use global lock for ioctl() operation." Jan Kara <jack(a)suse.cz> mm: Fix warning in insert_pfn() Daniel Borkmann <daniel(a)iogearbox.net> x86/retpolines: Disable switch jump tables when retpolines are enabled Daniel Borkmann <daniel(a)iogearbox.net> x86, retpolines: Raise limit for generating indirect calls from switch-case Mikulas Patocka <mpatocka(a)redhat.com> dm integrity: change memcmp to strncmp in dm_integrity_ctr Xin Long <lucien.xin(a)gmail.com> tipc: check link name with right length in tipc_nl_compat_link_set Xin Long <lucien.xin(a)gmail.com> tipc: check bearer name with right length in tipc_nl_compat_bearer_enable Yue Haibing <yuehaibing(a)huawei.com> fm10k: Fix a potential NULL pointer dereference Florian Westphal <fw(a)strlen.de> netfilter: ebtables: CONFIG_COMPAT: drop a bogus WARN_ON Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> NFS: Forbid setting AF_INET6 to "struct sockaddr_in"->sin_family. luca abeni <luca.abeni(a)santannapisa.it> sched/deadline: Correctly handle active 0-lag timers Todd Kjos <tkjos(a)android.com> binder: fix handling of misaligned binder object Andrea Claudi <aclaudi(a)redhat.com> ipvs: fix warning on unused variable YueHaibing <yuehaibing(a)huawei.com> fs/proc/proc_sysctl.c: Fix a NULL pointer dereference Alexander Shishkin <alexander.shishkin(a)linux.intel.com> intel_th: gth: Fix an off-by-one in output unassigning Linus Torvalds <torvalds(a)linux-foundation.org> slip: make slhc_free() silently accept an error pointer Xin Long <lucien.xin(a)gmail.com> tipc: handle the err returned from cmd header function Adalbert Lazăr <alazar(a)bitdefender.com> vsock/virtio: fix kernel panic from virtio_transport_reset_no_sock Dan Carpenter <dan.carpenter(a)oracle.com> ext4: fix some error pointer dereferences Kai-Heng Feng <kai.heng.feng(a)canonical.com> USB: Consolidate LPM checks to avoid enabling LPM twice Kai-Heng Feng <kai.heng.feng(a)canonical.com> USB: Add new USB LPM helpers Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> drm/vc4: Fix compilation error reported by kbuild test bot Dave Airlie <airlied(a)redhat.com> Revert "drm/i915/fbdev: Actually configure untiled displays" Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> drm/vc4: Fix memory leak during gpu reset. Ard Biesheuvel <ard.biesheuvel(a)linaro.org> ARM: 8857/1: efi: enable CP15 DMB instructions before cleaning the cache Dirk Behme <dirk.behme(a)de.bosch.com> dmaengine: sh: rcar-dmac: With cyclic DMA residue 0 is valid Alex Williamson <alex.williamson(a)redhat.com> vfio/type1: Limit DMA mappings per container Lucas Stach <l.stach(a)pengutronix.de> Input: synaptics-rmi4 - write config register values to the right offset NeilBrown <neilb(a)suse.com> sunrpc: don't mark uninitialised items as VALID. Trond Myklebust <trondmy(a)gmail.com> nfsd: Don't release the callback slot unless it was actually held Yan, Zheng <zyan(a)redhat.com> ceph: fix ci->i_head_snapc leak Jeff Layton <jlayton(a)kernel.org> ceph: ensure d_name stability in ceph_dentry_hash() Jeff Layton <jlayton(a)kernel.org> ceph: only use d_name directly when parent is locked Xie XiuQi <xiexiuqi(a)huawei.com> sched/numa: Fix a possible divide-by-zero Josh Collier <josh.d.collier(a)intel.com> IB/rdmavt: Fix frwr memory registration Peter Zijlstra <peterz(a)infradead.org> trace: Fix preempt_enable_no_resched() abuse Aurelien Jarno <aurelien(a)aurel32.net> MIPS: scall64-o32: Fix indirect syscall number load YueHaibing <yuehaibing(a)huawei.com> lib/Kconfig.debug: fix build error without CONFIG_BLOCK Jérôme Glisse <jglisse(a)redhat.com> zram: pass down the bvec we need to read into in the work struct Jann Horn <jannh(a)google.com> tracing: Fix buffer_ref pipe ops Wenwen Wang <wang6495(a)umn.edu> tracing: Fix a memory leak by early error exit in trace_pid_write() Frank Sorenson <sorenson(a)redhat.com> cifs: do not attempt cifs operation on smb2+ rename error Masahiro Yamada <yamada.masahiro(a)socionext.com> kbuild: simplify ld-option implementation ------------- Diffstat: Documentation/networking/ip-sysctl.txt | 1 + Makefile | 4 +- arch/arm/boot/compressed/head.S | 16 ++++- arch/mips/kernel/scall64-o32.S | 2 +- arch/x86/Makefile | 9 +++ drivers/android/binder_alloc.c | 18 +++--- drivers/block/loop.c | 58 +++++++++--------- drivers/block/loop.h | 1 + drivers/block/zram/zram_drv.c | 5 +- drivers/dma/sh/rcar-dmac.c | 4 +- drivers/gpu/drm/i915/intel_fbdev.c | 12 ++-- drivers/gpu/drm/vc4/vc4_crtc.c | 2 +- drivers/hwtracing/intel_th/gth.c | 2 +- drivers/infiniband/sw/rdmavt/mr.c | 17 +++--- drivers/input/rmi4/rmi_f11.c | 2 +- drivers/md/dm-integrity.c | 6 +- drivers/net/ethernet/intel/fm10k/fm10k_main.c | 2 + .../net/ethernet/mellanox/mlx5/core/en_ethtool.c | 2 +- drivers/net/ethernet/mellanox/mlx5/core/port.c | 4 -- drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 4 +- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 +- drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c | 8 ++- drivers/net/slip/slhc.c | 2 +- drivers/net/team/team.c | 6 ++ drivers/usb/core/driver.c | 23 +++++-- drivers/usb/core/hub.c | 16 ++--- drivers/usb/core/message.c | 3 +- drivers/usb/core/sysfs.c | 5 +- drivers/usb/core/usb.h | 10 +++- drivers/vfio/vfio_iommu_type1.c | 14 +++++ fs/ceph/dir.c | 6 +- fs/ceph/mds_client.c | 70 ++++++++++++++++++---- fs/ceph/snap.c | 7 ++- fs/cifs/inode.c | 4 ++ fs/ext4/xattr.c | 3 + fs/nfs/super.c | 3 +- fs/nfsd/nfs4callback.c | 8 ++- fs/nfsd/state.h | 1 + fs/proc/proc_sysctl.c | 6 +- fs/splice.c | 4 +- include/linux/pipe_fs_i.h | 1 + kernel/sched/deadline.c | 3 +- kernel/sched/fair.c | 4 ++ kernel/trace/ring_buffer.c | 2 +- kernel/trace/trace.c | 33 +++++----- lib/Kconfig.debug | 1 + mm/memory.c | 9 ++- net/bridge/netfilter/ebtables.c | 3 +- net/ipv4/route.c | 32 +++++++--- net/ipv4/sysctl_net_ipv4.c | 5 +- net/netfilter/ipvs/ip_vs_ctl.c | 3 +- net/rds/ib_fmr.c | 11 ++++ net/rds/ib_rdma.c | 3 - net/rose/af_rose.c | 17 +++--- net/rose/rose_link.c | 16 +++-- net/rose/rose_loopback.c | 36 +++++------ net/rose/rose_route.c | 8 +-- net/rose/rose_timer.c | 30 ++++------ net/sunrpc/cache.c | 3 + net/tipc/netlink_compat.c | 24 ++++++-- net/vmw_vsock/virtio_transport_common.c | 22 ++++--- scripts/Kbuild.include | 4 +- 62 files changed, 424 insertions(+), 220 deletions(-)

5 years

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[PATCH 4.9 00/41] 4.9.172-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 4.9.172 release. There are 41 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 May 2019 11:34:41 AM UTC. 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/v4.x/stable-review/patch-4.9.172-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.9.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 4.9.172-rc1 Peter Oskolkov <posk(a)google.com> net: IP6 defrag: use rbtrees in nf_conntrack_reasm.c Peter Oskolkov <posk(a)google.com> net: IP6 defrag: use rbtrees for IPv6 defrag Florian Westphal <fw(a)strlen.de> ipv6: remove dependency of nf_defrag_ipv6 on ipv6 module Peter Oskolkov <posk(a)google.com> net: IP defrag: encapsulate rbtree defrag code into callable functions Eric Dumazet <edumazet(a)google.com> ipv6: frags: fix a lockdep false positive ZhangXiaoxu <zhangxiaoxu5(a)huawei.com> ipv4: set the tcp_min_rtt_wlen range from 0 to one day Vinod Koul <vkoul(a)kernel.org> net: stmmac: move stmmac_check_ether_addr() to driver probe Hangbin Liu <liuhangbin(a)gmail.com> team: fix possible recursive locking when add slaves Zhu Yanjun <yanjun.zhu(a)oracle.com> net: rds: exchange of 8K and 1M pool Erez Alfasi <ereza(a)mellanox.com> net/mlx5e: ethtool, Remove unsupported SFP EEPROM high pages query Amit Cohen <amitc(a)mellanox.com> mlxsw: spectrum: Fix autoneg status in ethtool Eric Dumazet <edumazet(a)google.com> ipv4: add sanity checks in ipv4_link_failure() Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Revert "block/loop: Use global lock for ioctl() operation." Xin Long <lucien.xin(a)gmail.com> tipc: check link name with right length in tipc_nl_compat_link_set Xin Long <lucien.xin(a)gmail.com> tipc: check bearer name with right length in tipc_nl_compat_bearer_enable Yue Haibing <yuehaibing(a)huawei.com> fm10k: Fix a potential NULL pointer dereference Florian Westphal <fw(a)strlen.de> netfilter: ebtables: CONFIG_COMPAT: drop a bogus WARN_ON Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> NFS: Forbid setting AF_INET6 to "struct sockaddr_in"->sin_family. YueHaibing <yuehaibing(a)huawei.com> fs/proc/proc_sysctl.c: Fix a NULL pointer dereference Alexander Shishkin <alexander.shishkin(a)linux.intel.com> intel_th: gth: Fix an off-by-one in output unassigning Linus Torvalds <torvalds(a)linux-foundation.org> slip: make slhc_free() silently accept an error pointer Xin Long <lucien.xin(a)gmail.com> tipc: handle the err returned from cmd header function Adalbert Lazăr <alazar(a)bitdefender.com> vsock/virtio: fix kernel panic from virtio_transport_reset_no_sock Kai-Heng Feng <kai.heng.feng(a)canonical.com> USB: Consolidate LPM checks to avoid enabling LPM twice Kai-Heng Feng <kai.heng.feng(a)canonical.com> USB: Add new USB LPM helpers Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> drm/vc4: Fix compilation error reported by kbuild test bot Maarten Lankhorst <maarten.lankhorst(a)linux.intel.com> drm/vc4: Fix memory leak during gpu reset. Ard Biesheuvel <ard.biesheuvel(a)linaro.org> ARM: 8857/1: efi: enable CP15 DMB instructions before cleaning the cache Dirk Behme <dirk.behme(a)de.bosch.com> dmaengine: sh: rcar-dmac: With cyclic DMA residue 0 is valid Lucas Stach <l.stach(a)pengutronix.de> Input: synaptics-rmi4 - write config register values to the right offset NeilBrown <neilb(a)suse.com> sunrpc: don't mark uninitialised items as VALID. Trond Myklebust <trondmy(a)gmail.com> nfsd: Don't release the callback slot unless it was actually held Yan, Zheng <zyan(a)redhat.com> ceph: fix ci->i_head_snapc leak Jeff Layton <jlayton(a)kernel.org> ceph: ensure d_name stability in ceph_dentry_hash() Xie XiuQi <xiexiuqi(a)huawei.com> sched/numa: Fix a possible divide-by-zero Josh Collier <josh.d.collier(a)intel.com> IB/rdmavt: Fix frwr memory registration Peter Zijlstra <peterz(a)infradead.org> trace: Fix preempt_enable_no_resched() abuse Aurelien Jarno <aurelien(a)aurel32.net> MIPS: scall64-o32: Fix indirect syscall number load Wenwen Wang <wang6495(a)umn.edu> tracing: Fix a memory leak by early error exit in trace_pid_write() Frank Sorenson <sorenson(a)redhat.com> cifs: do not attempt cifs operation on smb2+ rename error Masahiro Yamada <yamada.masahiro(a)socionext.com> kbuild: simplify ld-option implementation ------------- Diffstat: Documentation/networking/ip-sysctl.txt | 1 + Makefile | 4 +- arch/arm/boot/compressed/head.S | 16 +- arch/mips/kernel/scall64-o32.S | 2 +- drivers/block/loop.c | 42 +-- drivers/block/loop.h | 1 + drivers/dma/sh/rcar-dmac.c | 4 +- drivers/gpu/drm/vc4/vc4_crtc.c | 2 +- drivers/hwtracing/intel_th/gth.c | 2 +- drivers/infiniband/sw/rdmavt/mr.c | 17 +- drivers/input/rmi4/rmi_f11.c | 2 +- drivers/net/ethernet/intel/fm10k/fm10k_main.c | 2 + .../net/ethernet/mellanox/mlx5/core/en_ethtool.c | 2 +- drivers/net/ethernet/mellanox/mlx5/core/port.c | 4 - drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 4 +- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 +- drivers/net/slip/slhc.c | 2 +- drivers/net/team/team.c | 6 + drivers/usb/core/driver.c | 23 +- drivers/usb/core/hub.c | 16 +- drivers/usb/core/message.c | 3 +- drivers/usb/core/sysfs.c | 5 +- drivers/usb/core/usb.h | 10 +- fs/ceph/dir.c | 6 +- fs/ceph/mds_client.c | 9 + fs/ceph/snap.c | 7 +- fs/cifs/inode.c | 4 + fs/nfs/super.c | 3 +- fs/nfsd/nfs4callback.c | 8 +- fs/nfsd/state.h | 1 + fs/proc/proc_sysctl.c | 6 +- include/net/inet_frag.h | 16 +- include/net/ipv6.h | 29 -- include/net/ipv6_frag.h | 111 +++++++ kernel/sched/fair.c | 4 + kernel/trace/ring_buffer.c | 2 +- kernel/trace/trace.c | 5 +- net/bridge/netfilter/ebtables.c | 3 +- net/ieee802154/6lowpan/reassembly.c | 2 +- net/ipv4/inet_fragment.c | 293 +++++++++++++++++ net/ipv4/ip_fragment.c | 295 ++--------------- net/ipv4/route.c | 32 +- net/ipv4/sysctl_net_ipv4.c | 5 +- net/ipv6/netfilter/nf_conntrack_reasm.c | 273 +++++----------- net/ipv6/netfilter/nf_defrag_ipv6_hooks.c | 3 +- net/ipv6/reassembly.c | 361 ++++++--------------- net/openvswitch/conntrack.c | 1 + net/rds/ib_fmr.c | 11 + net/rds/ib_rdma.c | 3 - net/sunrpc/cache.c | 3 + net/tipc/netlink_compat.c | 24 +- net/vmw_vsock/virtio_transport_common.c | 22 +- scripts/Kbuild.include | 4 +- 53 files changed, 866 insertions(+), 854 deletions(-)

5 years

6
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[For Stable] mm: memcontrol: fix excessive complexity in memory.stat reporting

by Vaibhav Rustagi

In linux stable kernel (tested on 4.14), reading memory.stat in case of tens of thousands of ghost cgroups pinned by lingering page cache takes up to 100 ms ~ 700 ms to complete the reading. Repro steps (tested on 4.14 kernel): $ cat /tmp/make_zombies mkdir /tmp/fs mount -t tmpfs nodev /tmp/fs for i in {1..10000}; do mkdir /sys/fs/cgroup/memory/z$i (echo $BASHPID >> /sys/fs/cgroup/memory/z$i/cgroup.procs && echo $i > /tmp/fs/$i) done # establish baseline $ perf stat -r3 cat /sys/fs/cgroup/memory/memory.stat > /dev/null 0.011642670 seconds time elapsed $ bash /tmp/make_zombies $ perf stat -r3 cat /sys/fs/cgroup/memory/memory.stat > /dev/null 0.134939281 seconds time elapsed $ rmdir /sys/fs/cgroup/memory/z* $ perf stat -r3 cat /sys/fs/cgroup/memory/memory.stat > /dev/null 0.135323145 seconds time elapsed # even after rmdir we have zombies, so still slow. The fix is already present in linux master (since 4.16) by following commits: c9019e9bf42e66d028d70d2da6206cad4dd9250d mm: memcontrol: eliminate raw access to stat and event counters 284542656e22c43fdada8c8cc0ca9ede8453eed7 mm: memcontrol: implement lruvec stat functions on top of each other a983b5ebee57209c99f68c8327072f25e0e6e3da mm: memcontrol: fix excessive complexity in memory.stat reporting c3cc39118c3610eb6ab4711bc624af7fc48a35fe mm: memcontrol: fix NR_WRITEBACK leak in memcg and system stats e27be240df53f1a20c659168e722b5d9f16cc7f4 mm: memcg: make sure memory.events is uptodate when waking pollers I would like to request cherry-picking the above commits to linux-stable branch - 4.14. Thanks, Vaibhav

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patch "soc: sunxi: Fix missing dependency on REGMAP_MMIO" added to usb-next

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled soc: sunxi: Fix missing dependency on REGMAP_MMIO to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-next branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will also be merged in the next major kernel release during the merge window. If you have any questions about this process, please let me know. >From a84014e1db35d8e7af09878d0b4bf30804fb17d5 Mon Sep 17 00:00:00 2001 From: Samuel Holland <samuel(a)sholland.org> Date: Tue, 30 Apr 2019 09:59:37 -0500 Subject: soc: sunxi: Fix missing dependency on REGMAP_MMIO When enabling ARCH_SUNXI from allnoconfig, SUNXI_SRAM is enabled, but not REGMAP_MMIO, so the kernel fails to link with an undefined reference to __devm_regmap_init_mmio_clk. Select REGMAP_MMIO, as suggested in drivers/base/regmap/Kconfig. This creates the following dependency loop: drivers/of/Kconfig:68: symbol OF_IRQ depends on IRQ_DOMAIN kernel/irq/Kconfig:63: symbol IRQ_DOMAIN is selected by REGMAP drivers/base/regmap/Kconfig:7: symbol REGMAP default is visible depending on REGMAP_MMIO drivers/base/regmap/Kconfig:39: symbol REGMAP_MMIO is selected by SUNXI_SRAM drivers/soc/sunxi/Kconfig:4: symbol SUNXI_SRAM is selected by USB_MUSB_SUNXI drivers/usb/musb/Kconfig:63: symbol USB_MUSB_SUNXI depends on GENERIC_PHY drivers/phy/Kconfig:7: symbol GENERIC_PHY is selected by PHY_BCM_NS_USB3 drivers/phy/broadcom/Kconfig:29: symbol PHY_BCM_NS_USB3 depends on MDIO_BUS drivers/net/phy/Kconfig:12: symbol MDIO_BUS default is visible depending on PHYLIB drivers/net/phy/Kconfig:181: symbol PHYLIB is selected by ARC_EMAC_CORE drivers/net/ethernet/arc/Kconfig:18: symbol ARC_EMAC_CORE is selected by ARC_EMAC drivers/net/ethernet/arc/Kconfig:24: symbol ARC_EMAC depends on OF_IRQ To fix the circular dependency, make USB_MUSB_SUNXI select GENERIC_PHY instead of depending on it. This matches the use of GENERIC_PHY by all but two other drivers. Cc: <stable(a)vger.kernel.org> # 4.19 Fixes: 5828729bebbb ("soc: sunxi: export a regmap for EMAC clock reg on A64") Signed-off-by: Samuel Holland <samuel(a)sholland.org> Acked-by: Maxime Ripard <maxime.ripard(a)bootlin.com> Signed-off-by: Bin Liu <b-liu(a)ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/soc/sunxi/Kconfig | 1 + drivers/usb/musb/Kconfig | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/soc/sunxi/Kconfig b/drivers/soc/sunxi/Kconfig index 353b07e40176..e84eb4e59f58 100644 --- a/drivers/soc/sunxi/Kconfig +++ b/drivers/soc/sunxi/Kconfig @@ -4,6 +4,7 @@ config SUNXI_SRAM bool default ARCH_SUNXI + select REGMAP_MMIO help Say y here to enable the SRAM controller support. This device is responsible on mapping the SRAM in the sunXi SoCs diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index f742fddc5e2c..52f8e2b57ad5 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -67,7 +67,7 @@ config USB_MUSB_SUNXI depends on NOP_USB_XCEIV depends on PHY_SUN4I_USB depends on EXTCON - depends on GENERIC_PHY + select GENERIC_PHY select SUNXI_SRAM config USB_MUSB_DAVINCI -- 2.21.0

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Linux-stable-mirror May 2019