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+ mm-userfaultfd-correct-dirty-flags-set-for-both-present-and-swap-pte.patch added to mm-hotfixes-unstable branch

by Andrew Morton

The patch titled Subject: mm: userfaultfd: correct dirty flags set for both present and swap pte has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-userfaultfd-correct-dirty-flags-set-for-both-present-and-swap-pte.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: Barry Song <v-songbaohua(a)oppo.com> Subject: mm: userfaultfd: correct dirty flags set for both present and swap pte Date: Fri, 9 May 2025 10:09:12 +1200 As David pointed out, what truly matters for mremap and userfaultfd move operations is the soft dirty bit. The current comment and implementation��which always sets the dirty bit for present PTEs and fails to set the soft dirty bit for swap PTEs��are incorrect. This could break features like Checkpoint-Restore in Userspace (CRIU). This patch updates the behavior to correctly set the soft dirty bit for both present and swap PTEs in accordance with mremap. Link: https://lkml.kernel.org/r/20250508220912.7275-1-21cnbao@gmail.com Fixes: adef440691bab ("userfaultfd: UFFDIO_MOVE uABI") Signed-off-by: Barry Song <v-songbaohua(a)oppo.com> Reported-by: David Hildenbrand <david(a)redhat.com> Closes: https://lore.kernel.org/linux-mm/02f14ee1-923f-47e3-a994-4950afb9afcc@redha… Acked-by: Peter Xu <peterx(a)redhat.com> Reviewed-by: Suren Baghdasaryan <surenb(a)google.com> Cc: Lokesh Gidra <lokeshgidra(a)google.com> Cc: Andrea Arcangeli <aarcange(a)redhat.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- mm/userfaultfd.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) --- a/mm/userfaultfd.c~mm-userfaultfd-correct-dirty-flags-set-for-both-present-and-swap-pte +++ a/mm/userfaultfd.c @@ -1064,8 +1064,13 @@ static int move_present_pte(struct mm_st src_folio->index = linear_page_index(dst_vma, dst_addr); orig_dst_pte = mk_pte(&src_folio->page, dst_vma->vm_page_prot); - /* Follow mremap() behavior and treat the entry dirty after the move */ - orig_dst_pte = pte_mkwrite(pte_mkdirty(orig_dst_pte), dst_vma); + /* Set soft dirty bit so userspace can notice the pte was moved */ +#ifdef CONFIG_MEM_SOFT_DIRTY + orig_dst_pte = pte_mksoft_dirty(orig_dst_pte); +#endif + if (pte_dirty(orig_src_pte)) + orig_dst_pte = pte_mkdirty(orig_dst_pte); + orig_dst_pte = pte_mkwrite(orig_dst_pte, dst_vma); set_pte_at(mm, dst_addr, dst_pte, orig_dst_pte); out: @@ -1100,6 +1105,9 @@ static int move_swap_pte(struct mm_struc } orig_src_pte = ptep_get_and_clear(mm, src_addr, src_pte); +#ifdef CONFIG_MEM_SOFT_DIRTY + orig_src_pte = pte_swp_mksoft_dirty(orig_src_pte); +#endif set_pte_at(mm, dst_addr, dst_pte, orig_src_pte); double_pt_unlock(dst_ptl, src_ptl); _ Patches currently in -mm which might be from v-songbaohua(a)oppo.com are mm-userfaultfd-correct-dirty-flags-set-for-both-present-and-swap-pte.patch

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[REGRESSION] e1000e heavy packet loss on Meteor Lake - 6.14.2

by Marek Marczykowski-Górecki

Hi, After updating to 6.14.2, the ethernet adapter is almost unusable, I get over 30% packet loss. Bisect says it's this commit: commit 85f6414167da39e0da30bf370f1ecda5a58c6f7b Author: Vitaly Lifshits <vitaly.lifshits(a)intel.com> Date: Thu Mar 13 16:05:56 2025 +0200 e1000e: change k1 configuration on MTP and later platforms [ Upstream commit efaaf344bc2917cbfa5997633bc18a05d3aed27f ] Starting from Meteor Lake, the Kumeran interface between the integrated MAC and the I219 PHY works at a different frequency. This causes sporadic MDI errors when accessing the PHY, and in rare circumstances could lead to packet corruption. To overcome this, introduce minor changes to the Kumeran idle state (K1) parameters during device initialization. Hardware reset reverts this configuration, therefore it needs to be applied in a few places. Fixes: cc23f4f0b6b9 ("e1000e: Add support for Meteor Lake") Signed-off-by: Vitaly Lifshits <vitaly.lifshits(a)intel.com> Tested-by: Avigail Dahan <avigailx.dahan(a)intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen(a)intel.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> drivers/net/ethernet/intel/e1000e/defines.h | 3 ++ drivers/net/ethernet/intel/e1000e/ich8lan.c | 80 +++++++++++++++++++++++++++-- drivers/net/ethernet/intel/e1000e/ich8lan.h | 4 ++ 3 files changed, 82 insertions(+), 5 deletions(-) My system is Novacustom V540TU laptop with Intel Core Ultra 5 125H. And the e1000e driver is running in a Xen HVM (with PCI passthrough). Interestingly, I have also another one with Intel Core Ultra 7 155H where the issue does not happen. I don't see what is different about network adapter there, they look identical on lspci (but there are differences about other devices)... I see the commit above was already backported to other stable branches too... #regzbot introduced: 85f6414167da39e0da30bf370f1ecda5a58c6f7b -- Best Regards, Marek Marczykowski-Górecki Invisible Things Lab

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[PATCH v3] block, scsi: sd_zbc: Respect bio vector limits for report zones buffer

by Steve Siwinski

The report zones buffer size is currently limited by the HBA's maximum segment count to ensure the buffer can be mapped. However, the block layer further limits the number of iovec entries to 1024 when allocating a bio. To avoid allocation of buffers too large to be mapped, further restrict the maximum buffer size to BIO_MAX_INLINE_VECS. Replace the UIO_MAXIOV symbolic name with the more contextually appropriate BIO_MAX_INLINE_VECS. Fixes: b091ac616846 ("sd_zbc: Fix report zones buffer allocation") Cc: stable(a)vger.kernel.org Signed-off-by: Steve Siwinski <ssiwinski(a)atto.com> --- block/bio.c | 2 +- drivers/scsi/sd_zbc.c | 6 +++++- include/linux/bio.h | 1 + 3 files changed, 7 insertions(+), 2 deletions(-) diff --git a/block/bio.c b/block/bio.c index 4e6c85a33d74..4be592d37fb6 100644 --- a/block/bio.c +++ b/block/bio.c @@ -611,7 +611,7 @@ struct bio *bio_kmalloc(unsigned short nr_vecs, gfp_t gfp_mask) { struct bio *bio; - if (nr_vecs > UIO_MAXIOV) + if (nr_vecs > BIO_MAX_INLINE_VECS) return NULL; return kmalloc(struct_size(bio, bi_inline_vecs, nr_vecs), gfp_mask); } diff --git a/drivers/scsi/sd_zbc.c b/drivers/scsi/sd_zbc.c index 7a447ff600d2..a8db66428f80 100644 --- a/drivers/scsi/sd_zbc.c +++ b/drivers/scsi/sd_zbc.c @@ -169,6 +169,7 @@ static void *sd_zbc_alloc_report_buffer(struct scsi_disk *sdkp, unsigned int nr_zones, size_t *buflen) { struct request_queue *q = sdkp->disk->queue; + unsigned int max_segments; size_t bufsize; void *buf; @@ -180,12 +181,15 @@ static void *sd_zbc_alloc_report_buffer(struct scsi_disk *sdkp, * Furthermore, since the report zone command cannot be split, make * sure that the allocated buffer can always be mapped by limiting the * number of pages allocated to the HBA max segments limit. + * Since max segments can be larger than the max inline bio vectors, + * further limit the allocated buffer to BIO_MAX_INLINE_VECS. */ nr_zones = min(nr_zones, sdkp->zone_info.nr_zones); bufsize = roundup((nr_zones + 1) * 64, SECTOR_SIZE); bufsize = min_t(size_t, bufsize, queue_max_hw_sectors(q) << SECTOR_SHIFT); - bufsize = min_t(size_t, bufsize, queue_max_segments(q) << PAGE_SHIFT); + max_segments = min(BIO_MAX_INLINE_VECS, queue_max_segments(q)); + bufsize = min_t(size_t, bufsize, max_segments << PAGE_SHIFT); while (bufsize >= SECTOR_SIZE) { buf = kvzalloc(bufsize, GFP_KERNEL | __GFP_NORETRY); diff --git a/include/linux/bio.h b/include/linux/bio.h index cafc7c215de8..b786ec5bcc81 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -11,6 +11,7 @@ #include <linux/uio.h> #define BIO_MAX_VECS 256U +#define BIO_MAX_INLINE_VECS UIO_MAXIOV struct queue_limits; -- 2.43.5

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[PATCH v2] mm: userfaultfd: correct dirty flags set for both present and swap pte

by Barry Song

From: Barry Song <v-songbaohua(a)oppo.com> As David pointed out, what truly matters for mremap and userfaultfd move operations is the soft dirty bit. The current comment and implementation—which always sets the dirty bit for present PTEs and fails to set the soft dirty bit for swap PTEs—are incorrect. This could break features like Checkpoint-Restore in Userspace (CRIU). This patch updates the behavior to correctly set the soft dirty bit for both present and swap PTEs in accordance with mremap. Reported-by: David Hildenbrand <david(a)redhat.com> Closes: https://lore.kernel.org/linux-mm/02f14ee1-923f-47e3-a994-4950afb9afcc@redha… Acked-by: Peter Xu <peterx(a)redhat.com> Reviewed-by: Suren Baghdasaryan <surenb(a)google.com> Cc: Lokesh Gidra <lokeshgidra(a)google.com> Cc: Andrea Arcangeli <aarcange(a)redhat.com> Fixes: adef440691bab ("userfaultfd: UFFDIO_MOVE uABI") Cc: stable(a)vger.kernel.org Signed-off-by: Barry Song <v-songbaohua(a)oppo.com> --- mm/userfaultfd.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c index e8ce92dc105f..bc473ad21202 100644 --- a/mm/userfaultfd.c +++ b/mm/userfaultfd.c @@ -1064,8 +1064,13 @@ static int move_present_pte(struct mm_struct *mm, src_folio->index = linear_page_index(dst_vma, dst_addr); orig_dst_pte = folio_mk_pte(src_folio, dst_vma->vm_page_prot); - /* Follow mremap() behavior and treat the entry dirty after the move */ - orig_dst_pte = pte_mkwrite(pte_mkdirty(orig_dst_pte), dst_vma); + /* Set soft dirty bit so userspace can notice the pte was moved */ +#ifdef CONFIG_MEM_SOFT_DIRTY + orig_dst_pte = pte_mksoft_dirty(orig_dst_pte); +#endif + if (pte_dirty(orig_src_pte)) + orig_dst_pte = pte_mkdirty(orig_dst_pte); + orig_dst_pte = pte_mkwrite(orig_dst_pte, dst_vma); set_pte_at(mm, dst_addr, dst_pte, orig_dst_pte); out: @@ -1100,6 +1105,9 @@ static int move_swap_pte(struct mm_struct *mm, struct vm_area_struct *dst_vma, } orig_src_pte = ptep_get_and_clear(mm, src_addr, src_pte); +#ifdef CONFIG_MEM_SOFT_DIRTY + orig_src_pte = pte_swp_mksoft_dirty(orig_src_pte); +#endif set_pte_at(mm, dst_addr, dst_pte, orig_src_pte); double_pt_unlock(dst_ptl, src_ptl); -- 2.39.3 (Apple Git-146)

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[PATCH v2] wifi: mt76: mt7925: fix missing hdr_trans_tlv command for broadcast wtbl

by Mingyen Hsieh

From: Ming Yen Hsieh <mingyen.hsieh(a)mediatek.com> The hdr_trans_tlv function call has been moved inside the conditional block to ensure it is executed when info->enable is true. Cc: stable(a)vger.kernel.org Fixes: cb1353ef3473 ("wifi: mt76: mt7925: integrate *mlo_sta_cmd and *sta_cmd") Signed-off-by: Ming Yen Hsieh <mingyen.hsieh(a)mediatek.com> Tested-by: Niklas Schnelle <niks(a)kernel.org> --- v2: add tested-by tag --- drivers/net/wireless/mediatek/mt76/mt7925/mcu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c index a42b584634ab..fd756f0d18f8 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c @@ -2183,14 +2183,14 @@ mt7925_mcu_sta_cmd(struct mt76_phy *phy, mt7925_mcu_sta_mld_tlv(skb, info->vif, info->link_sta->sta); mt7925_mcu_sta_eht_mld_tlv(skb, info->vif, info->link_sta->sta); } - - mt7925_mcu_sta_hdr_trans_tlv(skb, info->vif, info->link_sta); } if (!info->enable) { mt7925_mcu_sta_remove_tlv(skb); mt76_connac_mcu_add_tlv(skb, STA_REC_MLD_OFF, sizeof(struct tlv)); + } else { + mt7925_mcu_sta_hdr_trans_tlv(skb, info->vif, info->link_sta); } return mt76_mcu_skb_send_msg(dev, skb, info->cmd, true); -- 2.34.1

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[PATCH] clk: s2mps11: initialise clk_hw_onecell_data::num before accessing ::hws[] in probe()

by André Draszik

With UBSAN enabled, we're getting the following trace: UBSAN: array-index-out-of-bounds in .../drivers/clk/clk-s2mps11.c:186:3 index 0 is out of range for type 'struct clk_hw *[] __counted_by(num)' (aka 'struct clk_hw *[]') This is because commit f316cdff8d67 ("clk: Annotate struct clk_hw_onecell_data with __counted_by") annotated the hws member of that struct with __counted_by, which informs the bounds sanitizer about the number of elements in hws, so that it can warn when hws is accessed out of bounds. As noted in that change, the __counted_by member must be initialised with the number of elements before the first array access happens, otherwise there will be a warning from each access prior to the initialisation because the number of elements is zero. This occurs in s2mps11_clk_probe() due to ::num being assigned after ::hws access. Move the assignment to satisfy the requirement of assign-before-access. Cc: stable(a)vger.kernel.org Fixes: f316cdff8d67 ("clk: Annotate struct clk_hw_onecell_data with __counted_by") Signed-off-by: André Draszik <andre.draszik(a)linaro.org> --- drivers/clk/clk-s2mps11.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/clk/clk-s2mps11.c b/drivers/clk/clk-s2mps11.c index 014db6386624071e173b5b940466301d2596400a..8ddf3a9a53dfd5bb52a05a3e02788a357ea77ad3 100644 --- a/drivers/clk/clk-s2mps11.c +++ b/drivers/clk/clk-s2mps11.c @@ -137,6 +137,8 @@ static int s2mps11_clk_probe(struct platform_device *pdev) if (!clk_data) return -ENOMEM; + clk_data->num = S2MPS11_CLKS_NUM; + switch (hwid) { case S2MPS11X: s2mps11_reg = S2MPS11_REG_RTC_CTRL; @@ -186,7 +188,6 @@ static int s2mps11_clk_probe(struct platform_device *pdev) clk_data->hws[i] = &s2mps11_clks[i].hw; } - clk_data->num = S2MPS11_CLKS_NUM; of_clk_add_hw_provider(s2mps11_clks->clk_np, of_clk_hw_onecell_get, clk_data); --- base-commit: 9388ec571cb1adba59d1cded2300eeb11827679c change-id: 20250326-s2mps11-ubsan-c90978e7bc04 Best regards, -- André Draszik <andre.draszik(a)linaro.org>

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perf r5101c4 counter regression

by Salvatore Bonaccorso

Hi, Pasi Kallinen reported in Debian a regression with perf r5101c4 counter, initially it was found in https://github.com/rr-debugger/rr/issues/3949 but said to be a kernel problem. On Tue, May 06, 2025 at 07:18:39PM +0300, Pasi Kallinen wrote: > Package: src:linux > Version: 6.12.25-1 > Severity: normal > X-Debbugs-Cc: debian-amd64(a)lists.debian.org, paxed(a)alt.org > User: debian-amd64(a)lists.debian.org > Usertags: amd64 > > Dear Maintainer, > > perf stat -e r5101c4 true > > reports "not supported". > > The counters worked in kernel 6.11.10. > > I first noticed this not working when updating to 6.12.22. > Booting back to 6.11.10, the counters work correctly. Does this ring a bell? Would you be able to bisect the changes to identify where the behaviour changed? Regards, Salvatore

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[PATCH] xenbus: Use kref to track req lifetime

by Jason Andryuk

Marek reported seeing a NULL pointer fault in the xenbus_thread callstack: BUG: kernel NULL pointer dereference, address: 0000000000000000 RIP: e030:__wake_up_common+0x4c/0x180 Call Trace: <TASK> __wake_up_common_lock+0x82/0xd0 process_msg+0x18e/0x2f0 xenbus_thread+0x165/0x1c0 process_msg+0x18e is req->cb(req). req->cb is set to xs_wake_up(), a thin wrapper around wake_up(), or xenbus_dev_queue_reply(). It seems like it was xs_wake_up() in this case. It seems like req may have woken up the xs_wait_for_reply(), which kfree()ed the req. When xenbus_thread resumes, it faults on the zero-ed data. Linux Device Drivers 2nd edition states: "Normally, a wake_up call can cause an immediate reschedule to happen, meaning that other processes might run before wake_up returns." ... which would match the behaviour observed. Change to keeping two krefs on each request. One for the caller, and one for xenbus_thread. Each will kref_put() when finished, and the last will free it. This use of kref matches the description in Documentation/core-api/kref.rst Link: https://lore.kernel.org/xen-devel/ZO0WrR5J0xuwDIxW@mail-itl/ Reported-by: "Marek Marczykowski-Górecki" <marmarek(a)invisiblethingslab.com> Fixes: fd8aa9095a95 ("xen: optimize xenbus driver for multiple concurrent xenstore accesses") Cc: stable(a)vger.kernel.org Signed-off-by: Jason Andryuk <jason.andryuk(a)amd.com> --- Kinda RFC-ish as I don't know if it fixes Marek's issue. This does seem like the correct approach if we are seeing req free()ed out from under xenbus_thread. drivers/xen/xenbus/xenbus.h | 2 ++ drivers/xen/xenbus/xenbus_comms.c | 9 ++++----- drivers/xen/xenbus/xenbus_dev_frontend.c | 2 +- drivers/xen/xenbus/xenbus_xs.c | 18 ++++++++++++++++-- 4 files changed, 23 insertions(+), 8 deletions(-) diff --git a/drivers/xen/xenbus/xenbus.h b/drivers/xen/xenbus/xenbus.h index 13821e7e825e..9ac0427724a3 100644 --- a/drivers/xen/xenbus/xenbus.h +++ b/drivers/xen/xenbus/xenbus.h @@ -77,6 +77,7 @@ enum xb_req_state { struct xb_req_data { struct list_head list; wait_queue_head_t wq; + struct kref kref; struct xsd_sockmsg msg; uint32_t caller_req_id; enum xsd_sockmsg_type type; @@ -103,6 +104,7 @@ int xb_init_comms(void); void xb_deinit_comms(void); int xs_watch_msg(struct xs_watch_event *event); void xs_request_exit(struct xb_req_data *req); +void xs_free_req(struct kref *kref); int xenbus_match(struct device *_dev, const struct device_driver *_drv); int xenbus_dev_probe(struct device *_dev); diff --git a/drivers/xen/xenbus/xenbus_comms.c b/drivers/xen/xenbus/xenbus_comms.c index e5fda0256feb..82df2da1b880 100644 --- a/drivers/xen/xenbus/xenbus_comms.c +++ b/drivers/xen/xenbus/xenbus_comms.c @@ -309,8 +309,8 @@ static int process_msg(void) virt_wmb(); req->state = xb_req_state_got_reply; req->cb(req); - } else - kfree(req); + } + kref_put(&req->kref, xs_free_req); } mutex_unlock(&xs_response_mutex); @@ -386,14 +386,13 @@ static int process_writes(void) state.req->msg.type = XS_ERROR; state.req->err = err; list_del(&state.req->list); - if (state.req->state == xb_req_state_aborted) - kfree(state.req); - else { + if (state.req->state != xb_req_state_aborted) { /* write err, then update state */ virt_wmb(); state.req->state = xb_req_state_got_reply; wake_up(&state.req->wq); } + kref_put(&state.req->kref, xs_free_req); mutex_unlock(&xb_write_mutex); diff --git a/drivers/xen/xenbus/xenbus_dev_frontend.c b/drivers/xen/xenbus/xenbus_dev_frontend.c index 46f8916597e5..f5c21ba64df5 100644 --- a/drivers/xen/xenbus/xenbus_dev_frontend.c +++ b/drivers/xen/xenbus/xenbus_dev_frontend.c @@ -406,7 +406,7 @@ void xenbus_dev_queue_reply(struct xb_req_data *req) mutex_unlock(&u->reply_mutex); kfree(req->body); - kfree(req); + kref_put(&req->kref, xs_free_req); kref_put(&u->kref, xenbus_file_free); diff --git a/drivers/xen/xenbus/xenbus_xs.c b/drivers/xen/xenbus/xenbus_xs.c index d32c726f7a12..dcf9182c8451 100644 --- a/drivers/xen/xenbus/xenbus_xs.c +++ b/drivers/xen/xenbus/xenbus_xs.c @@ -112,6 +112,12 @@ static void xs_suspend_exit(void) wake_up_all(&xs_state_enter_wq); } +void xs_free_req(struct kref *kref) +{ + struct xb_req_data *req = container_of(kref, struct xb_req_data, kref); + kfree(req); +} + static uint32_t xs_request_enter(struct xb_req_data *req) { uint32_t rq_id; @@ -237,6 +243,12 @@ static void xs_send(struct xb_req_data *req, struct xsd_sockmsg *msg) req->caller_req_id = req->msg.req_id; req->msg.req_id = xs_request_enter(req); + /* + * Take 2nd ref. One for this thread, and the second for the + * xenbus_thread. + */ + kref_get(&req->kref); + mutex_lock(&xb_write_mutex); list_add_tail(&req->list, &xb_write_list); notify = list_is_singular(&xb_write_list); @@ -261,8 +273,8 @@ static void *xs_wait_for_reply(struct xb_req_data *req, struct xsd_sockmsg *msg) if (req->state == xb_req_state_queued || req->state == xb_req_state_wait_reply) req->state = xb_req_state_aborted; - else - kfree(req); + + kref_put(&req->kref, xs_free_req); mutex_unlock(&xb_write_mutex); return ret; @@ -291,6 +303,7 @@ int xenbus_dev_request_and_reply(struct xsd_sockmsg *msg, void *par) req->cb = xenbus_dev_queue_reply; req->par = par; req->user_req = true; + kref_init(&req->kref); xs_send(req, msg); @@ -319,6 +332,7 @@ static void *xs_talkv(struct xenbus_transaction t, req->num_vecs = num_vecs; req->cb = xs_wake_up; req->user_req = false; + kref_init(&req->kref); msg.req_id = 0; msg.tx_id = t.id; -- 2.34.1

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[PATCH 6.6 000/129] 6.6.90-rc1 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 6.6.90 release. There are 129 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 Fri, 09 May 2025 18:37:41 +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-6.6.90-rc1… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.6.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 6.6.90-rc1 Mathias Nyman <mathias.nyman(a)linux.intel.com> xhci: fix possible null pointer dereference at secondary interrupter removal Marc Zyngier <maz(a)kernel.org> usb: xhci: Check for xhci->interrupters being allocated in xhci_mem_clearup() Chris Bainbridge <chris.bainbridge(a)gmail.com> drm/amd/display: Fix slab-use-after-free in hdcp Mario Limonciello <mario.limonciello(a)amd.com> drm/amd/display: Add scoped mutexes for amdgpu_dm_dhcp Nicolin Chen <nicolinc(a)nvidia.com> iommu/arm-smmu-v3: Fix iommu_device_probe bug due to duplicated stream ids Jason Gunthorpe <jgg(a)ziepe.ca> iommu/arm-smmu-v3: Use the new rb tree helpers Shyam Saini <shyamsaini(a)linux.microsoft.com> drivers: base: handle module_kobject creation Shyam Saini <shyamsaini(a)linux.microsoft.com> kernel: globalize lookup_or_create_module_kobject() Shyam Saini <shyamsaini(a)linux.microsoft.com> kernel: param: rename locate_module_kobject Björn Töpel <bjorn(a)rivosinc.com> riscv: uprobes: Add missing fence.i after building the XOL buffer Shakeel Butt <shakeel.butt(a)linux.dev> memcg: drain obj stock on cpu hotplug teardown Mathias Nyman <mathias.nyman(a)linux.intel.com> xhci: Limit time spent with xHC interrupts disabled during bus resume Mathias Nyman <mathias.nyman(a)linux.intel.com> xhci: support setting interrupt moderation IMOD for secondary interrupters Niklas Neronin <niklas.neronin(a)linux.intel.com> usb: xhci: check if 'requested segments' exceeds ERST capacity Mathias Nyman <mathias.nyman(a)linux.intel.com> xhci: Add helper to set an interrupters interrupt moderation interval Mathias Nyman <mathias.nyman(a)linux.intel.com> xhci: add support to allocate several interrupters Mathias Nyman <mathias.nyman(a)linux.intel.com> xhci: split free interrupter into separate remove and free parts Lukas Wunner <lukas(a)wunner.de> xhci: Clean up stale comment on ERST_SIZE macro Jonathan Bell <jonathan(a)raspberrypi.com> xhci: Use more than one Event Ring segment Lukas Wunner <lukas(a)wunner.de> xhci: Set DESI bits in ERDP register correctly Christian Hewitt <christianshewitt(a)gmail.com> Revert "drm/meson: vclk: fix calculation of 59.94 fractional rates" Christian Bruel <christian.bruel(a)foss.st.com> arm64: dts: st: Use 128kB size for aliased GIC400 register access on stm32mp25 SoCs Christian Bruel <christian.bruel(a)foss.st.com> arm64: dts: st: Adjust interrupt-controller for stm32mp25 SoCs Sébastien Szymanski <sebastien.szymanski(a)armadeus.com> ARM: dts: opos6ul: add ksz8081 phy properties Sudeep Holla <sudeep.holla(a)arm.com> firmware: arm_ffa: Skip Rx buffer ownership release if not acquired Cristian Marussi <cristian.marussi(a)arm.com> firmware: arm_scmi: Balance device refcount when destroying devices Cong Wang <xiyou.wangcong(a)gmail.com> sch_ets: make est_qlen_notify() idempotent Cong Wang <xiyou.wangcong(a)gmail.com> sch_qfq: make qfq_qlen_notify() idempotent Cong Wang <xiyou.wangcong(a)gmail.com> sch_hfsc: make hfsc_qlen_notify() idempotent Cong Wang <xiyou.wangcong(a)gmail.com> sch_drr: make drr_qlen_notify() idempotent Cong Wang <xiyou.wangcong(a)gmail.com> sch_htb: make htb_qlen_notify() idempotent Samuel Holland <samuel.holland(a)sifive.com> riscv: Pass patch_text() the length in bytes Geert Uytterhoeven <geert+renesas(a)glider.be> ASoC: soc-core: Stop using of_property_read_bool() for non-boolean properties Rob Herring (Arm) <robh(a)kernel.org> ASoC: Use of_property_read_bool() Stefan Wahren <wahrenst(a)gmx.net> net: vertexcom: mse102x: Fix RX error handling Stefan Wahren <wahrenst(a)gmx.net> net: vertexcom: mse102x: Add range check for CMD_RTS Stefan Wahren <wahrenst(a)gmx.net> net: vertexcom: mse102x: Fix LEN_MASK Stefan Wahren <wahrenst(a)gmx.net> net: vertexcom: mse102x: Fix possible stuck of SPI interrupt Jian Shen <shenjian15(a)huawei.com> net: hns3: defer calling ptp_clock_register() Hao Lan <lanhao(a)huawei.com> net: hns3: fixed debugfs tm_qset size Yonglong Liu <liuyonglong(a)huawei.com> net: hns3: fix an interrupt residual problem Jian Shen <shenjian15(a)huawei.com> net: hns3: store rx VLAN tag offload state for VF Sathesh B Edara <sedara(a)marvell.com> octeon_ep: Fix host hang issue during device reboot Mattias Barthel <mattias.barthel(a)atlascopco.com> net: fec: ERR007885 Workaround for conventional TX Thangaraj Samynathan <thangaraj.s(a)microchip.com> net: lan743x: Fix memleak issue when GSO enabled Michael Liang <mliang(a)purestorage.com> nvme-tcp: fix premature queue removal and I/O failover Michael Chan <michael.chan(a)broadcom.com> bnxt_en: Fix ethtool -d byte order for 32-bit values Shruti Parab <shruti.parab(a)broadcom.com> bnxt_en: Fix out-of-bound memcpy() during ethtool -w Shruti Parab <shruti.parab(a)broadcom.com> bnxt_en: Fix coredump logic to free allocated buffer Felix Fietkau <nbd(a)nbd.name> net: ipv6: fix UDPv6 GSO segmentation with NAT Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: felix: fix broken taprio gate states after clock jump Chad Monroe <chad(a)monroe.io> net: ethernet: mtk_eth_soc: fix SER panic with 4GB+ RAM Jacob Keller <jacob.e.keller(a)intel.com> igc: fix lock order in igc_ptp_reset Da Xue <da(a)libre.computer> net: mdio: mux-meson-gxl: set reversed bit when using internal phy Simon Horman <horms(a)kernel.org> net: dlink: Correct endianness handling of led_mode Keith Busch <kbusch(a)kernel.org> nvme-pci: fix queue unquiesce check on slot_reset Takashi Iwai <tiwai(a)suse.de> ALSA: ump: Fix buffer overflow at UMP SysEx message conversion Xuanqiang Luo <luoxuanqiang(a)kylinos.cn> ice: Check VF VSI Pointer Value in ice_vc_add_fdir_fltr() Victor Nogueira <victor(a)mojatatu.com> net_sched: qfq: Fix double list add in class with netem as child qdisc Victor Nogueira <victor(a)mojatatu.com> net_sched: ets: Fix double list add in class with netem as child qdisc Victor Nogueira <victor(a)mojatatu.com> net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc Victor Nogueira <victor(a)mojatatu.com> net_sched: drr: Fix double list add in class with netem as child qdisc Shannon Nelson <shannon.nelson(a)amd.com> pds_core: remove write-after-free of client_id Shannon Nelson <shannon.nelson(a)amd.com> pds_core: specify auxiliary_device to be created Shannon Nelson <shannon.nelson(a)amd.com> pds_core: make pdsc_auxbus_dev_del() void Shannon Nelson <shannon.nelson(a)amd.com> pds_core: delete VF dev on reset Shannon Nelson <shannon.nelson(a)amd.com> pds_core: check health in devcmd wait Louis-Alexis Eyraud <louisalexis.eyraud(a)collabora.com> net: ethernet: mtk-star-emac: rearm interrupts in rx_poll only when advised Louis-Alexis Eyraud <louisalexis.eyraud(a)collabora.com> net: ethernet: mtk-star-emac: fix spinlock recursion issues on rx/tx poll Vladimir Oltean <vladimir.oltean(a)nxp.com> net: mscc: ocelot: delete PVID VLAN when readding it as non-PVID Vladimir Oltean <vladimir.oltean(a)nxp.com> net: mscc: ocelot: treat 802.1ad tagged traffic as 802.1Q-untagged Pauli Virtanen <pav(a)iki.fi> Bluetooth: L2CAP: copy RX timestamp to new fragments Abhishek Chauhan <quic_abchauha(a)quicinc.com> net: Rename mono_delivery_time to tstamp_type for scalabilty En-Wei Wu <en-wei.wu(a)canonical.com> Bluetooth: btusb: avoid NULL pointer dereference in skb_dequeue() Chris Mi <cmi(a)nvidia.com> net/mlx5: E-switch, Fix error handling for enabling roce Maor Gottlieb <maorg(a)nvidia.com> net/mlx5: E-Switch, Initialize MAC Address for Default GID Ido Schimmel <idosch(a)nvidia.com> vxlan: vnifilter: Fix unlocked deletion of default FDB entry Madhavan Srinivasan <maddy(a)linux.ibm.com> powerpc/boot: Fix dash warning Murad Masimov <m.masimov(a)mt-integration.ru> wifi: plfxlc: Remove erroneous assert in plfxlc_mac_release Chen Linxuan <chenlinxuan(a)uniontech.com> drm/i915/pxp: fix undefined reference to `intel_pxp_gsccs_is_ready_for_sessions' Madhavan Srinivasan <maddy(a)linux.ibm.com> powerpc/boot: Check for ld-option support Donet Tom <donettom(a)linux.ibm.com> book3s64/radix : Align section vmemmap start address to PAGE_SIZE Sheetal <sheetal(a)nvidia.com> ASoC: soc-pcm: Fix hw_params() and DAPM widget sequence Robin Murphy <robin.murphy(a)arm.com> iommu: Handle race with default domain setup Sean Christopherson <seanjc(a)google.com> KVM: x86: Load DR6 with guest value only before entering .vcpu_run() loop Richard Zhu <hongxing.zhu(a)nxp.com> PCI: imx6: Skip controller_id generation logic for i.MX7D Ryan Matthews <ryanmatthews(a)fastmail.com> Revert "PCI: imx6: Skip controller_id generation logic for i.MX7D" Eduard Zingerman <eddyz87(a)gmail.com> selftests/bpf: extend changes_pkt_data with cases w/o subprograms Eduard Zingerman <eddyz87(a)gmail.com> bpf: fix null dereference when computing changes_pkt_data of prog w/o subprogs Eduard Zingerman <eddyz87(a)gmail.com> selftests/bpf: validate that tail call invalidates packet pointers Eduard Zingerman <eddyz87(a)gmail.com> bpf: consider that tail calls invalidate packet pointers Eduard Zingerman <eddyz87(a)gmail.com> selftests/bpf: freplace tests for tracking of changes_packet_data Eduard Zingerman <eddyz87(a)gmail.com> bpf: check changes_pkt_data property for extension programs Eduard Zingerman <eddyz87(a)gmail.com> selftests/bpf: test for changing packet data from global functions Eduard Zingerman <eddyz87(a)gmail.com> bpf: track changes_pkt_data property for global functions Eduard Zingerman <eddyz87(a)gmail.com> bpf: refactor bpf_helper_changes_pkt_data to use helper number Eduard Zingerman <eddyz87(a)gmail.com> bpf: add find_containing_subprog() utility function Jeongjun Park <aha310510(a)gmail.com> tracing: Fix oob write in trace_seq_to_buffer() Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> cpufreq: Fix setting policy limits when frequency tables are used Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> cpufreq: Avoid using inconsistent policy->min and policy->max Jethro Donaldson <devel(a)jro.nz> smb: client: fix zero length for mkdir POSIX create context Sean Heelan <seanheelan(a)gmail.com> ksmbd: fix use-after-free in kerberos authentication Shouye Liu <shouyeliu(a)tencent.com> platform/x86/intel-uncore-freq: Fix missing uncore sysfs during CPU hotplug Mario Limonciello <mario.limonciello(a)amd.com> platform/x86/amd: pmc: Require at least 2.5 seconds between HW sleep cycles Mingcong Bai <jeffbai(a)aosc.io> iommu/vt-d: Apply quirk_iommu_igfx for 8086:0044 (QM57/QS57) Pavel Paklov <Pavel.Paklov(a)cyberprotect.ru> iommu/amd: Fix potential buffer overflow in parse_ivrs_acpihid Benjamin Marzinski <bmarzins(a)redhat.com> dm: always update the array size in realloc_argv on success Mikulas Patocka <mpatocka(a)redhat.com> dm-integrity: fix a warning on invalid table line LongPing Wei <weilongping(a)oppo.com> dm-bufio: don't schedule in atomic context Wentao Liang <vulab(a)iscas.ac.cn> wifi: brcm80211: fmac: Add error handling for brcmf_usb_dl_writeimage() Steven Rostedt <rostedt(a)goodmis.org> tracing: Do not take trace_event_sem in print_event_fields() Aaron Kling <webgeek1234(a)gmail.com> spi: tegra114: Don't fail set_cs_timing when delays are zero Ruslan Piasetskyi <ruslan.piasetskyi(a)gmail.com> mmc: renesas_sdhi: Fix error handling in renesas_sdhi_probe Wei Yang <richard.weiyang(a)gmail.com> mm/memblock: repeat setting reserved region nid if array is doubled Wei Yang <richard.weiyang(a)gmail.com> mm/memblock: pass size instead of end to memblock_set_node() Stephan Gerhold <stephan.gerhold(a)linaro.org> irqchip/qcom-mpm: Prevent crash when trying to handle non-wake GPIOs Vishal Badole <Vishal.Badole(a)amd.com> amd-xgbe: Fix to ensure dependent features are toggled with RX checksum offload Sean Christopherson <seanjc(a)google.com> perf/x86/intel: KVM: Mask PEBS_ENABLE loaded for guest with vCPU's value. Helge Deller <deller(a)gmx.de> parisc: Fix double SIGFPE crash Will Deacon <will(a)kernel.org> arm64: errata: Add missing sentinels to Spectre-BHB MIDR arrays Clark Wang <xiaoning.wang(a)nxp.com> i2c: imx-lpi2c: Fix clock count when probe defers Niravkumar L Rabara <niravkumar.l.rabara(a)altera.com> EDAC/altera: Set DDR and SDMMC interrupt mask before registration Niravkumar L Rabara <niravkumar.l.rabara(a)altera.com> EDAC/altera: Test the correct error reg offset Philipp Stanner <phasta(a)kernel.org> drm/nouveau: Fix WARN_ON in nouveau_fence_context_kill() Tvrtko Ursulin <tvrtko.ursulin(a)igalia.com> drm/fdinfo: Protect against driver unbind Dave Chen <davechen(a)synology.com> btrfs: fix COW handling in run_delalloc_nocow() Joachim Priesner <joachim.priesner(a)web.de> ALSA: usb-audio: Add second USB ID for Jabra Evolve 65 headset Geoffrey D. Bennett <g(a)b4.vu> ALSA: usb-audio: Add retry on -EPROTO from usb_set_interface() Christian Heusel <christian(a)heusel.eu> Revert "rndis_host: Flag RNDIS modems as WWAN devices" ------------- Diffstat: Makefile | 4 +- .../boot/dts/nxp/imx/imx6ul-imx6ull-opos6ul.dtsi | 3 + arch/arm64/boot/dts/st/stm32mp251.dtsi | 9 +- arch/arm64/kernel/proton-pack.c | 2 + arch/parisc/math-emu/driver.c | 16 +- arch/powerpc/boot/wrapper | 6 +- arch/powerpc/mm/book3s64/radix_pgtable.c | 17 +- arch/riscv/include/asm/patch.h | 2 +- arch/riscv/kernel/patch.c | 14 +- arch/riscv/kernel/probes/kprobes.c | 18 +- arch/riscv/kernel/probes/uprobes.c | 10 +- arch/riscv/net/bpf_jit_comp64.c | 7 +- arch/x86/events/intel/core.c | 2 +- arch/x86/include/asm/kvm-x86-ops.h | 1 + arch/x86/include/asm/kvm_host.h | 1 + arch/x86/kvm/svm/svm.c | 13 +- arch/x86/kvm/vmx/vmx.c | 11 +- arch/x86/kvm/x86.c | 3 + drivers/base/module.c | 13 +- drivers/bluetooth/btusb.c | 101 ++++++++--- drivers/cpufreq/cpufreq.c | 42 ++++- drivers/cpufreq/cpufreq_ondemand.c | 3 +- drivers/cpufreq/freq_table.c | 6 +- drivers/edac/altera_edac.c | 9 +- drivers/edac/altera_edac.h | 2 + drivers/firmware/arm_ffa/driver.c | 3 +- drivers/firmware/arm_scmi/bus.c | 3 + .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c | 56 +++--- drivers/gpu/drm/drm_file.c | 6 + drivers/gpu/drm/i915/pxp/intel_pxp_gsccs.h | 8 +- drivers/gpu/drm/meson/meson_vclk.c | 6 +- drivers/gpu/drm/nouveau/nouveau_fence.c | 2 +- drivers/i2c/busses/i2c-imx-lpi2c.c | 4 +- drivers/iommu/amd/init.c | 8 + drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 79 +++++---- drivers/iommu/intel/iommu.c | 4 +- drivers/iommu/iommu.c | 18 ++ drivers/irqchip/irq-qcom-mpm.c | 3 + drivers/md/dm-bufio.c | 9 +- drivers/md/dm-integrity.c | 2 +- drivers/md/dm-table.c | 5 +- drivers/mmc/host/renesas_sdhi_core.c | 10 +- drivers/net/dsa/ocelot/felix_vsc9959.c | 5 +- drivers/net/ethernet/amd/pds_core/auxbus.c | 49 +++--- drivers/net/ethernet/amd/pds_core/core.h | 7 +- drivers/net/ethernet/amd/pds_core/dev.c | 11 +- drivers/net/ethernet/amd/pds_core/devlink.c | 7 +- drivers/net/ethernet/amd/pds_core/main.c | 23 ++- drivers/net/ethernet/amd/xgbe/xgbe-desc.c | 9 +- drivers/net/ethernet/amd/xgbe/xgbe-dev.c | 24 ++- drivers/net/ethernet/amd/xgbe/xgbe-drv.c | 11 +- drivers/net/ethernet/amd/xgbe/xgbe.h | 4 + drivers/net/ethernet/broadcom/bnxt/bnxt_coredump.c | 30 ++-- drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 36 +++- drivers/net/ethernet/dlink/dl2k.c | 2 +- drivers/net/ethernet/dlink/dl2k.h | 2 +- drivers/net/ethernet/freescale/fec_main.c | 7 +- drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c | 2 +- drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 82 +++++---- .../net/ethernet/hisilicon/hns3/hns3pf/hclge_ptp.c | 13 +- .../ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 25 ++- .../ethernet/hisilicon/hns3/hns3vf/hclgevf_main.h | 1 + drivers/net/ethernet/intel/ice/ice_virtchnl_fdir.c | 5 + drivers/net/ethernet/intel/igc/igc_ptp.c | 6 +- .../net/ethernet/marvell/octeon_ep/octep_main.c | 2 +- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 14 +- drivers/net/ethernet/mediatek/mtk_star_emac.c | 13 +- .../ethernet/mellanox/mlx5/core/eswitch_offloads.c | 5 +- drivers/net/ethernet/mellanox/mlx5/core/rdma.c | 11 +- drivers/net/ethernet/mellanox/mlx5/core/rdma.h | 4 +- drivers/net/ethernet/microchip/lan743x_main.c | 8 +- drivers/net/ethernet/microchip/lan743x_main.h | 1 + drivers/net/ethernet/mscc/ocelot.c | 194 +++++++++++++++++++-- drivers/net/ethernet/mscc/ocelot_vcap.c | 1 + drivers/net/ethernet/vertexcom/mse102x.c | 36 +++- drivers/net/mdio/mdio-mux-meson-gxl.c | 3 +- drivers/net/usb/rndis_host.c | 16 +- drivers/net/vxlan/vxlan_vnifilter.c | 8 +- .../net/wireless/broadcom/brcm80211/brcmfmac/usb.c | 6 +- drivers/net/wireless/purelifi/plfxlc/mac.c | 1 - drivers/nvme/host/pci.c | 2 +- drivers/nvme/host/tcp.c | 31 +++- drivers/pci/controller/dwc/pci-imx6.c | 3 +- drivers/platform/x86/amd/pmc/pmc.c | 7 +- .../x86/intel/uncore-frequency/uncore-frequency.c | 13 +- drivers/spi/spi-tegra114.c | 6 +- drivers/usb/host/xhci-debugfs.c | 2 +- drivers/usb/host/xhci-hub.c | 30 ++-- drivers/usb/host/xhci-mem.c | 175 +++++++++++++++---- drivers/usb/host/xhci-ring.c | 4 +- drivers/usb/host/xhci.c | 80 ++++++--- drivers/usb/host/xhci.h | 20 ++- fs/btrfs/inode.c | 9 +- fs/smb/client/smb2pdu.c | 1 + fs/smb/server/auth.c | 14 +- fs/smb/server/smb2pdu.c | 5 - include/linux/bpf.h | 1 + include/linux/bpf_verifier.h | 1 + include/linux/cpufreq.h | 83 ++++++--- include/linux/filter.h | 2 +- include/linux/module.h | 2 + include/linux/pds/pds_core_if.h | 1 + include/linux/skbuff.h | 52 ++++-- include/net/inet_frag.h | 4 +- include/soc/mscc/ocelot_vcap.h | 2 + include/sound/ump_convert.h | 2 +- kernel/bpf/core.c | 2 +- kernel/bpf/verifier.c | 81 +++++++-- kernel/params.c | 6 +- kernel/trace/trace.c | 5 +- kernel/trace/trace_output.c | 4 +- mm/memblock.c | 12 +- mm/memcontrol.c | 9 + net/bluetooth/l2cap_core.c | 3 + net/bridge/netfilter/nf_conntrack_bridge.c | 6 +- net/core/dev.c | 2 +- net/core/filter.c | 73 ++++---- net/ieee802154/6lowpan/reassembly.c | 2 +- net/ipv4/inet_fragment.c | 2 +- net/ipv4/ip_fragment.c | 2 +- net/ipv4/ip_output.c | 9 +- net/ipv4/tcp_output.c | 14 +- net/ipv4/udp_offload.c | 61 ++++++- net/ipv6/ip6_output.c | 6 +- net/ipv6/netfilter.c | 6 +- net/ipv6/netfilter/nf_conntrack_reasm.c | 2 +- net/ipv6/reassembly.c | 2 +- net/ipv6/tcp_ipv6.c | 2 +- net/sched/act_bpf.c | 4 +- net/sched/cls_bpf.c | 4 +- net/sched/sch_drr.c | 16 +- net/sched/sch_ets.c | 17 +- net/sched/sch_hfsc.c | 10 +- net/sched/sch_htb.c | 2 + net/sched/sch_qfq.c | 18 +- sound/soc/codecs/ak4613.c | 4 +- sound/soc/soc-core.c | 36 ++-- sound/soc/soc-pcm.c | 5 +- sound/usb/endpoint.c | 7 + sound/usb/format.c | 3 +- .../selftests/bpf/prog_tests/changes_pkt_data.c | 107 ++++++++++++ .../testing/selftests/bpf/progs/changes_pkt_data.c | 39 +++++ .../bpf/progs/changes_pkt_data_freplace.c | 18 ++ tools/testing/selftests/bpf/progs/verifier_sock.c | 56 ++++++ 144 files changed, 1772 insertions(+), 662 deletions(-)

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[to-be-updated] x86-kexec-fix-potential-cmem-ranges-out-of-bounds.patch removed from -mm tree

by Andrew Morton

The quilt patch titled Subject: x86/kexec: fix potential cmem->ranges out of bounds has been removed from the -mm tree. Its filename was x86-kexec-fix-potential-cmem-ranges-out-of-bounds.patch This patch was dropped because an updated version will be issued ------------------------------------------------------ From: fuqiang wang <fuqiang.wang(a)easystack.cn> Subject: x86/kexec: fix potential cmem->ranges out of bounds Date: Mon, 8 Jan 2024 21:06:47 +0800 In memmap_exclude_ranges(), elfheader will be excluded from crashk_res. In the current x86 architecture code, the elfheader is always allocated at crashk_res.start. It seems that there won't be a new split range. But it depends on the allocation position of elfheader in crashk_res. To avoid potential out of bounds in future, add a extra slot. The similar issue also exists in fill_up_crash_elf_data(). The range to be excluded is [0, 1M], start (0) is special and will not appear in the middle of existing cmem->ranges[]. But in cast the low 1M could be changed in the future, add a extra slot too. Without this patch, kdump kernel will fail to be loaded by kexec_file_load, [ 139.736948] UBSAN: array-index-out-of-bounds in arch/x86/kernel/crash.c:350:25 [ 139.742360] index 0 is out of range for type 'range [*]' [ 139.745695] CPU: 0 UID: 0 PID: 5778 Comm: kexec Not tainted 6.15.0-0.rc3.20250425git02ddfb981de8.32.fc43.x86_64 #1 PREEMPT(lazy) [ 139.745698] Hardware name: Amazon EC2 c5.large/, BIOS 1.0 10/16/2017 [ 139.745699] Call Trace: [ 139.745700] <TASK> [ 139.745701] dump_stack_lvl+0x5d/0x80 [ 139.745706] ubsan_epilogue+0x5/0x2b [ 139.745709] __ubsan_handle_out_of_bounds.cold+0x54/0x59 [ 139.745711] crash_setup_memmap_entries+0x2d9/0x330 [ 139.745716] setup_boot_parameters+0xf8/0x6a0 [ 139.745720] bzImage64_load+0x41b/0x4e0 [ 139.745722] ? find_next_iomem_res+0x109/0x140 [ 139.745727] ? locate_mem_hole_callback+0x109/0x170 [ 139.745737] kimage_file_alloc_init+0x1ef/0x3e0 [ 139.745740] __do_sys_kexec_file_load+0x180/0x2f0 [ 139.745742] do_syscall_64+0x7b/0x160 [ 139.745745] ? do_user_addr_fault+0x21a/0x690 [ 139.745747] ? exc_page_fault+0x7e/0x1a0 [ 139.745749] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 139.745751] RIP: 0033:0x7f7712c84e4d Previously discussed link: [1] https://lore.kernel.org/kexec/ZXk2oBf%2FT1Ul6o0c@MiWiFi-R3L-srv/ [2] https://lore.kernel.org/kexec/273284e8-7680-4f5f-8065-c5d780987e59@easystac… [3] https://lore.kernel.org/kexec/ZYQ6O%2F57sHAPxTHm@MiWiFi-R3L-srv/ Link: https://lkml.kernel.org/r/20240108130720.228478-1-fuqiang.wang@easystack.cn Signed-off-by: fuqiang wang <fuqiang.wang(a)easystack.cn> Acked-by: Baoquan He <bhe(a)redhat.com> Reported-by: Coiby Xu <coxu(a)redhat.com> Closes: https://lkml.kernel.org/r/4de3c2onosr7negqnfhekm4cpbklzmsimgdfv33c52dktqpza… Cc: Vivek Goyal <vgoyal(a)redhat.com> Cc: Dave Young <dyoung(a)redhat.com> Cc: <x86(a)kernel.org> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> --- arch/x86/kernel/crash.c | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-) --- a/arch/x86/kernel/crash.c~x86-kexec-fix-potential-cmem-ranges-out-of-bounds +++ a/arch/x86/kernel/crash.c @@ -165,8 +165,18 @@ static struct crash_mem *fill_up_crash_e /* * Exclusion of crash region and/or crashk_low_res may cause * another range split. So add extra two slots here. + * + * Exclusion of low 1M may not cause another range split, because the + * range of exclude is [0, 1M] and the condition for splitting a new + * region is that the start, end parameters are both in a certain + * existing region in cmem and cannot be equal to existing region's + * start or end. Obviously, the start of [0, 1M] cannot meet this + * condition. + * + * But in order to lest the low 1M could be changed in the future, + * (e.g. [stare, 1M]), add a extra slot. */ - nr_ranges += 2; + nr_ranges += 3; cmem = vzalloc(struct_size(cmem, ranges, nr_ranges)); if (!cmem) return NULL; @@ -298,9 +308,16 @@ int crash_setup_memmap_entries(struct ki struct crash_memmap_data cmd; struct crash_mem *cmem; - cmem = vzalloc(struct_size(cmem, ranges, 1)); + /* + * In the current x86 architecture code, the elfheader is always + * allocated at crashk_res.start. But it depends on the allocation + * position of elfheader in crashk_res. To avoid potential out of + * bounds in future, add a extra slot. + */ + cmem = vzalloc(struct_size(cmem, ranges, 2)); if (!cmem) return -ENOMEM; + cmem->max_nr_ranges = 2; memset(&cmd, 0, sizeof(struct crash_memmap_data)); cmd.params = params; _ Patches currently in -mm which might be from fuqiang.wang(a)easystack.cn are

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