In raid1_write_request(), each per-mirror loop iteration begins by
incrementing rdev->nr_pending. If a REQ_ATOMIC write encounters a
badblock within the requested range, the code jumps to err_handle
without dropping the reference taken for the current mirror.
err_handle's cleanup loop will only decrements for k < i and
r1_bio->bios[k] is non-NULL. The current slot is therefore skipped,
leaving its nr_pending reference leaked permanently. The reference
prevents the rdev from ever being removed, since raid1_remove_conf()
refuses to remove an rdev with nr_pending > 0.
Fix this by calling rdev_dec_pending() before jumping to err_handle.
Fixes: f2a38abf5f ("md/raid1: Atomic write support")
Signed-off-by: Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>
Link: https://patch.msgid.link/20260530151411.4119-1-abd.masalkhi@gmail.com
Signed-off-by: Yu Kuai <yukuai@fygo.io>
This condition much better fits into the only caller, limiting
fix_read_error to actually fix up data devices after a read error.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20260529054308.2720300-3-hch@lst.de
Signed-off-by: Yu Kuai <yukuai@fygo.io>
Unwind the main conditional with duplicate conditions and initialize
variables at initialization time where possible.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://patch.msgid.link/20260529054308.2720300-2-hch@lst.de
Signed-off-by: Yu Kuai <yukuai@fygo.io>
Use md_cloned_bio() to control bio accounting instead of relying
on r1bio_existed in raid1 or the io_accounting flag in raid10.
The previous logic does not reliably reflect whether a bio is an
md cloned bio. When a failed bio is split and resubmitted via
bio_submit_split_bioset() on the error path, this can lead to either
double accounting for md cloned bios, or missing accounting for bios
returned from bio_submit_split_bioset()
Fix this by using md_cloned_bio() to detect md cloned bios and
skip accounting accordingly.
Fixes: bb2a9acefa ("md/raid1: switch to use md_account_bio() for io accounting")
Fixes: 8204552383 ("md/raid10: switch to use md_account_bio() for io accounting")
Signed-off-by: Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>
Reviewed-by: Xiao Ni <xiao@kernel.org>
Link: https://patch.msgid.link/20260501114652.590037-4-abd.masalkhi@gmail.com
Signed-off-by: Yu Kuai <yukuai@fygo.io>
Detect the error path using md_cloned_bio() instead of relying
on r1_bio in raid1 or r10_bio->read_slot in raid10, which may be
NULL or -1 after splitting and resubmitting a failed bio.
As a result, the error path may not be recognized and memory
allocations can incorrectly use GFP_NOIO instead of
(GFP_NOIO | __GFP_HIGH), which can lead to a deadlock under
memory pressure.
Fixes: 689389a06c ("md/raid1: simplify handle_read_error().")
Fixes: 545250f248 ("md/raid10: simplify handle_read_error()")
Signed-off-by: Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>
Reviewed-by: Xiao Ni <xiao@kernel.org>
Link: https://patch.msgid.link/20260501114652.590037-3-abd.masalkhi@gmail.com
Signed-off-by: Yu Kuai <yukuai@fygo.io>
raid1d and raid10d may resubmit a split md cloned bio while handling
a read error. In this case, resubmitting the bio can lead to a deadlock
if the array is suspended before md_handle_request() acquires an
active_io reference via percpu_ref_tryget_live().
Since the cloned bio already holds an active_io reference,
trying to acquire another reference via percpu_ref_tryget_live()
can lead to a deadlock while the array is suspended.
Fix this by using percpu_ref_get() for md cloned bios.
Fixes: bb2a9acefa ("md/raid1: switch to use md_account_bio() for io accounting")
Fixes: 8204552383 ("md/raid10: switch to use md_account_bio() for io accounting")
Signed-off-by: Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>
Reviewed-by: Xiao Ni <xiao@kernel.org>
Reviewed-by: Yu Kuai <yukuai@fygo.io>
Link: https://patch.msgid.link/20260501114652.590037-2-abd.masalkhi@gmail.com
Signed-off-by: Yu Kuai <yukuai@fygo.io>
put_all_bios() always drops devs[i].bio, but it only drops
devs[i].repl_bio when r10_bio->read_slot < 0. If discard reuses an
r10bio that was previously used for a read, read_slot can still be
non-negative, and discard cleanup can skip bio_put() on repl_bio.
Reset read_slot to -1 when preparing an r10bio for discard so the
replacement bio is always released correctly.
Fixes: d30588b273 ("md/raid10: improve raid10 discard request")
Signed-off-by: Chen Cheng <chencheng@fnnas.com>
Reviewed-by: Xiao Ni <xiao@kernel.org>
Link: https://patch.msgid.link/20260515093019.3436882-1-chencheng@fnnas.com
Signed-off-by: Yu Kuai <yukuai@fygo.io>
Calling update_raid_disks() with the same value as the current one
can trigger unnecessary work. For example, RAID1 will reallocate
resources such as the mempool for r1bio.
Signed-off-by: Abd-Alrhman Masalkhi <abd.masalkhi@gmail.com>
Link: https://patch.msgid.link/20260428130524.448063-1-abd.masalkhi@gmail.com
Signed-off-by: Yu Kuai <yukuai@fygo.io>
Returning DM_MAPIO_REQUEUE from the target map() function only requeues
the bio during noflush suspends. During regular operations or during
flushing suspends, it fails the bio. Failing the bio during flushing
suspends is the correct behavior here. The bio cannot be handled, and
dm-raid cannot suspend while it is outstanding. But during normal
operations, dm-raid should not push the bio back to dm. Instead, wait
for the reshape to be resumed.
Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Reviewed-by: Xiao Ni <xiao@kernel.org>
Link: https://patch.msgid.link/20260428232010.2785514-1-bmarzins@redhat.com
Signed-off-by: Yu Kuai <yukuai@fygo.io>
Commit b1798910fc7f ("drbd: move UAPI headers to include/uapi/linux/")
broke compilation on targets without a hosted libc:
./usr/include/linux/drbd.h:18:10: fatal error: sys/types.h: No such
file or directory
The underlying issue is that there were some constructs left over in
those headers that don't belong in uapi.
Drop the __KERNEL__-gated split in drbd.h. The !__KERNEL__ branch pulls
in <sys/types.h>, <sys/wait.h> and <limits.h> for symbols that the
header does not actually reference; they were carried over from when
this lived in include/linux/.
Replace <asm/types.h> and the entire #ifdef block with the standard
UAPI combo <linux/types.h> + <asm/byteorder.h>, which provides
__u32/__u64/__s32 and __{LITTLE,BIG}_ENDIAN_BITFIELD in both kernel
and userspace contexts.
drbd_limits.h references some enum values and the DRBD_PROT_C define
from drbd.h, but does not include it. Add the missing include while
we're here.
Drop the unprefixed DEBUG_RANGE_CHECK from drbd_limits.h. It has no
in-kernel users and pollutes the userspace namespace.
Switch the drbd.h and drbd_limits.h include guards to the _UAPI_LINUX_*
convention already used by drbd_genl.h.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202605101346.V2wwJqv1-lkp@intel.com/
Fixes: b1798910fc7f ("drbd: move UAPI headers to include/uapi/linux/")
Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
Link: https://patch.msgid.link/20260513110343.3170338-1-christoph.boehmwalder@linbit.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Replace the genl_magic multi-include macro system with explicit
serialization and parsing.
The *_gen files were initially produced from a YNL spec via a
customized ynl-gen-c, but the DRBD netlink family is effectively
frozen, so the generator is kept unmodified.
All new functionality will land in a separate, properly-designed
family.
Carry the resulting code as ordinary in-tree source rather than
landing the spec and generator changes that produced it.
The bulk of the changes are mechanical renames to fit the YNL naming
conventions:
- Handler functions: drbd_adm_* -> drbd_nl_*_doit/dumpit
- GENL_MAGIC_VERSION -> DRBD_FAMILY_VERSION
- GENL_MAGIC_FAMILY_HDRSZ -> sizeof(struct drbd_genlmsghdr)
- drbd_genl_family -> drbd_nl_family
- Attribute IDs: T_* -> DRBD_A_*
Remove the nested_attr_tb static global buffer and move to a per-call
allocation approach: each deserialization manages its own nested
attribute table. This will be needed anyway when we eventually move
to parallel_ops, and it's actually simpler this way, so make the
move now.
Replace the functionality of the "sensitive" flag: this was only used
by a single field (shared_secret); open-code redaction logic for that
locally.
Also replace the "invariant" flag: this only had a couple of users,
and those basically never change. Hard code the check directly inline.
The genl_family struct itself is defined manually in drbd_nl.c.
Also replace a couple of drbd-specific wrappers (nla_put_u64_0pad,
drbd_nla_find_nested) with standard kernel functions while we're at
it.
Finally, completely remove the genl_magic system; DRBD was its only
user.
Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20260506124541.1951772-3-christoph.boehmwalder@linbit.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drbd.h and drbd_limits.h contain only type definitions, enums, and
constants shared between kernel and userspace. These should be part of
UAPI.
Split the genl_api header into two: the genlmsghdr and the enums are
UAPI, the rest stays there for now (it will be removed by one of the
next commits in this series).
drbd_config.h is clearly DRBD-internal, so move it there.
Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20260506124541.1951772-2-christoph.boehmwalder@linbit.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
- sh: Fix fallout from ZERO_PAGE consolidation
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Merge tag 'sh-for-v7.1-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux
Pull sh fix from John Paul Adrian Glaubitz:
"The ZERO_PAGE consolidation in v7.1, introduced a regression on sh
which made these systems unbootable.
The problem was that on sh, the initial boot parameters were
previously referenced as an array and after 6215d9f447 ("arch, mm:
consolidate empty_zero_page"), they were referenced as a pointer which
caused wrong code generation and boot hang.
This changes the declaration back to being an array which fixes the
boot hang"
* tag 'sh-for-v7.1-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
sh: Fix fallout from ZERO_PAGE consolidation
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Merge tag 'slab-for-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab fixes from Vlastimil Babka:
- Stable fixes for CONFIG_SMP=n where _nolock() allocations in NMI both
at kmalloc and page allocator levels are not properly protected by
the spin_trylock() semantics on !SMP (Harry Yoo)
* tag 'slab-for-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
mm/slab: return NULL early from kmalloc_nolock() in NMI on UP
mm/page_alloc: return NULL early from alloc_frozen_pages_nolock() in NMI on UP
by Sebastian Andrzej Siewior.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-urgent-2026-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fix from Ingo Molnar:
"Fix lockup in requeue-PI during signal/timeout wakeups, by Sebastian
Andrzej Siewior"
* tag 'locking-urgent-2026-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Prevent lockup in requeue-PI during signal/ timeout wakeup
- Fix the delayed dequeue negative lag increase fix in the
fair scheduler (Peter Zijlstra)
- Fix wakeup_preempt_fair() to do proper delayed dequeue
(Vincent Guittot)
- Clear sched_entity::rel_deadline when initializing
forked entities, which bug can cause all tasks to be
EEVDF-ineligible, causing a NULL pointer dereference
crash in pick_next_entity() (Zicheng Qu)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2026-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
- Fix the delayed dequeue negative lag increase fix in the
fair scheduler (Peter Zijlstra)
- Fix wakeup_preempt_fair() to do proper delayed dequeue
(Vincent Guittot)
- Clear sched_entity::rel_deadline when initializing
forked entities, which bug can cause all tasks to be
EEVDF-ineligible, causing a NULL pointer dereference
crash in pick_next_entity() (Zicheng Qu)
* tag 'sched-urgent-2026-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Clear rel_deadline when initializing forked entities
sched/fair: Fix wakeup_preempt_fair() vs delayed dequeue
sched/fair: Fix the negative lag increase fix
Consolidation of empty_zero_page declarations broke boot on sh.
sh stores its initial boot parameters in a page reserved in
arch/sh/kernel/head_32.S. Before commit 6215d9f447 ("arch, mm:
consolidate empty_zero_page") this page was referenced in C code
as an array and after that commit it is referenced as a pointer.
This causes wrong code generation and boot hang.
Declare boot_params_page as an array to fix the issue.
Reported-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Tested-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Fixes: 6215d9f447 ("arch, mm: consolidate empty_zero_page")
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Artur Rojek <contact@artur-rojek.eu>
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
- Reject algorithms with authsizes that are too short in authencesn.
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Merge tag 'v7.1-p3' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fix from Herbert Xu:
- Reject algorithms with authsizes that are too short in authencesn
* tag 'v7.1-p3' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: authencesn - reject short ahash digests during instance creation
- Fix a NULL pointer dereference in ntfs_index_walk_down() by validating
index block allocation.
- Fix a memory leak of the symlink target string in
ntfs_reparse_set_wsl_symlink() during error paths.
- Prevent VCN overflow and validate lowest_vcn in
ntfs_mapping_pairs_decompress() to avoid runlist corruption.
- Fix a page reference leak in ntfs_write_iomap_end_resident() when
attribute search context allocation fails.
- Fix an invalid PTR_ERR() usage on a valid folio pointer in
__ntfs_bitmap_set_bits_in_run().
- Correct directory link counting by dropping nlink only when the MFT
record link count reaches zero for WIN32/DOS aliases.
- Fix an uninitialized variable usage in ntfs_mapping_pairs_decompress()
by returning an error pointer directly.
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Merge tag 'ntfs-for-7.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs
Pull ntfs fixes from Namjae Jeon:
- Fix a NULL pointer dereference in ntfs_index_walk_down() by
validating index block allocation
- Fix a memory leak of the symlink target string in
ntfs_reparse_set_wsl_symlink() during error paths
- Prevent VCN overflow and validate lowest_vcn in
ntfs_mapping_pairs_decompress() to avoid runlist corruption
- Fix a page reference leak in ntfs_write_iomap_end_resident()
when attribute search context allocation fails
- Fix an invalid PTR_ERR() usage on a valid folio pointer in
__ntfs_bitmap_set_bits_in_run()
- Correct directory link counting by dropping nlink only when
the MFT record link count reaches zero for WIN32/DOS aliases
- Fix an uninitialized variable in ntfs_mapping_pairs_decompress()
by returning an error pointer directly
* tag 'ntfs-for-7.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs:
ntfs: Use return instead of goto in ntfs_mapping_pairs_decompress()
ntfs: drop nlink once for WIN32/DOS aliases
ntfs: fix invalid PTR_ERR() usage in __ntfs_bitmap_set_bits_in_run()
ntfs: fix error handling in ntfs_write_iomap_end_resident()
ntfs: fix VCN overflow in ntfs_mapping_pairs_decompress()
ntfs: fix WSL symlink target leak on reparse failure
ntfs: fix NULL dereference in ntfs_index_walk_down()
core and helpers:
- calculate framebuffer geometry with format helpers
- fix docs
amdgpu:
- GFX12 fix for CONFIG_DRM_DEBUG_MM configs
- Fix DC analog support
- Userq fixes
- GART placement fix
- Aldebaran SMU fixes
- AMDGPU_INFO_READ_MMR_REG fix
- UVD 3.1 fix
- GC 6 TCC fix
- Fix root reservation in amdgpu_vm_handle_fault()
- RAS fix
- Module reload fix for APUs
- Fix build for CONFIG_DRM_FBDEV_EMULATION=n
- IGT DWB regression fix
- GC 11.5.4 fix
- VCN user fence fixes
- JPEG user fence fixes
- SMU 13.0.6 fix
- VCN 3/4 IB parser fixes
- NV3x+ dGPU vblank fix
- DCE6/8 fixes for LVDS/eDP panels without an EDID
amdkfd:
- Fix for when CONFIG_HSA_AMD is not set
- SVM fixes
xe:
- uapi: Add missing pad and extensions check
- uapi: Reject unsafe PAT indices for CPU cached memory
- Drop registration of guc_submit_wedged_fini from xe_guc_submit_wedge
- Xe3p tuning and workaround fixes
- USE drm mm instead of drm SA for CCS read/write
- Fix leaks and null derefs
- Fix Wa_18022495364
appletbdrm:
- allocate protocol buffers with kvzalloc()
dma-buf:
- fix docs
imagination:
- avoid segfault in debugfs
ofdrm:
- put PCI device reference on errors
udl:
- increase USB timeout
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Merge tag 'drm-fixes-2026-05-02' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Fixes for rc2, the usual amdgpu/xe double header, I think xe had a
couple of weeks combined due to some maintainer access issues,
otherwise there's just a few misc fixes and documentation fixups.
core and helpers:
- calculate framebuffer geometry with format helpers
- fix docs
amdgpu:
- GFX12 fix for CONFIG_DRM_DEBUG_MM configs
- Fix DC analog support
- Userq fixes
- GART placement fix
- Aldebaran SMU fixes
- AMDGPU_INFO_READ_MMR_REG fix
- UVD 3.1 fix
- GC 6 TCC fix
- Fix root reservation in amdgpu_vm_handle_fault()
- RAS fix
- Module reload fix for APUs
- Fix build for CONFIG_DRM_FBDEV_EMULATION=n
- IGT DWB regression fix
- GC 11.5.4 fix
- VCN user fence fixes
- JPEG user fence fixes
- SMU 13.0.6 fix
- VCN 3/4 IB parser fixes
- NV3x+ dGPU vblank fix
- DCE6/8 fixes for LVDS/eDP panels without an EDID
amdkfd:
- Fix for when CONFIG_HSA_AMD is not set
- SVM fixes
xe:
- uapi: Add missing pad and extensions check
- uapi: Reject unsafe PAT indices for CPU cached memory
- Drop registration of guc_submit_wedged_fini from xe_guc_submit_wedge
- Xe3p tuning and workaround fixes
- USE drm mm instead of drm SA for CCS read/write
- Fix leaks and null derefs
- Fix Wa_18022495364
appletbdrm:
- allocate protocol buffers with kvzalloc()
dma-buf:
- fix docs
imagination:
- avoid segfault in debugfs
ofdrm:
- put PCI device reference on errors
udl:
- increase USB timeout"
* tag 'drm-fixes-2026-05-02' of https://gitlab.freedesktop.org/drm/kernel: (77 commits)
drm/xe/uapi: Reject coh_none PAT index for CPU_ADDR_MIRROR
drm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise
drm/xe/xelp: Fix Wa_18022495364
drm/xe/gsc: Fix BO leak on error in query_compatibility_version()
drm/xe/eustall: Fix drm_dev_put called before stream disable in close
drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl()
drm/xe: Fix dma-buf attachment leak in xe_gem_prime_import()
drm/xe: Fix bo leak in xe_dma_buf_init_obj() on allocation failure
drm/xe/bo: Fix bo leak on GGTT flag validation in xe_bo_init_locked()
drm/xe/bo: Fix bo leak on unaligned size validation in xe_bo_init_locked()
drm/xe: Fix potential NULL deref in xe_exec_queue_tlb_inval_last_fence_put_unlocked
drm/xe/vf: Use drm mm instead of drm sa for CCS read/write
drm/xe: Add memory pool with shadow support
drm/xe/debugfs: Correct printing of register whitelist ranges
drm/xe: Mark ROW_CHICKEN5 as a masked register
drm/xe/tuning: Use proper register offset for GAMSTLB_CTRL
drm/xe/xe3p_lpg: Add missing indirect ring state feature flag
drm/xe: Drop redundant rtp entries for Wa_14019988906 & Wa_14019877138
drm/xe/vm: Add missing pad and extensions check
drm/xe: Drop registration of guc_submit_wedged_fini from xe_guc_submit_wedge()
...
- Avoid writing an uninitialised stack variable to POR_EL0 on
sigreturn if the poe_context record is absent
- Reserve one more page for the early 4K-page kernel mapping to cover
the extra [_text, _stext) split introduced by the non-executable
read-only mapping
- Force the arch_local_irq_*() wrappers to be __always_inline so that
noinstr entry and idle paths cannot call out-of-line, instrumentable
copies
- Fix potential sign extension in the arm64 SCS unwinder's DWARF
advance_loc4 decoding
- Tolerate arm64 ACPI platforms with only WFI and no deeper PSCI idle
states, restoring cpuidle registration on such systems
- Include the UAPI <asm/ptrace.h> header in the arm64 GCS libc test
rather than carrying a duplicate struct user_gcs definition (the
original #ifdef NT_ARM_GCS was wrong to cover the structure
definition as it would be masked out if the toolchain defined it)
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Avoid writing an uninitialised stack variable to POR_EL0 on sigreturn
if the poe_context record is absent
- Reserve one more page for the early 4K-page kernel mapping to cover
the extra [_text, _stext) split introduced by the non-executable
read-only mapping
- Force the arch_local_irq_*() wrappers to be __always_inline so that
noinstr entry and idle paths cannot call out-of-line, instrumentable
copies
- Fix potential sign extension in the arm64 SCS unwinder's DWARF
advance_loc4 decoding
- Tolerate arm64 ACPI platforms with only WFI and no deeper PSCI idle
states, restoring cpuidle registration on such systems
- Include the UAPI <asm/ptrace.h> header in the arm64 GCS libc test
rather than carrying a duplicate struct user_gcs definition (the
original #ifdef NT_ARM_GCS was wrong to cover the structure
definition as it would be masked out if the toolchain defined it)
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: signal: Preserve POR_EL0 if poe_context is missing
arm64: Reserve an extra page for early kernel mapping
kselftest/arm64: Include <asm/ptrace.h> for user_gcs definition
ACPI: arm64: cpuidle: Tolerate platforms with no deep PSCI idle states
arm64/irqflags: __always_inline the arch_local_irq_*() helpers
arm64/scs: Fix potential sign extension issue of advance_loc4
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Merge tag 'selinux-pr-20260501' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux fixes from Paul Moore:
- Ensure SELinux is always properly accessing its own sock LSM state
- Only reserve an xattr slot for SELinux if it will be used
- Fix a SELinux auditing regression in the directory avdcache
* tag 'selinux-pr-20260501' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: fix avdcache auditing
selinux: don't reserve xattr slot when we won't fill it
selinux: use sk blob accessor in socket permission helpers
Currently need_futex_hash_allocate_default() depends on strict pthread
semantics, abusing CLONE_THREAD. This breaks the non-concurrency
assumptions when doing the mm->futex_ref pcpu allocations, leading to
bugs[0] when sharing the mm in other ways; ie:
BUG: KASAN: slab-use-after-free in futex_hash_put
... where the +1 bias can end up on a percpu counter that mm->futex_ref
no longer points at.
Loosen the check to cover any CLONE_VM clone, except vfork(). Excluding
vfork keeps the existing paths untouched (no overhead), and we can't
race in the first place: either the parent is suspended and the child
runs alone, or mm->futex_ref is already allocated from an earlier
CLONE_VM.
Link: https://lore.kernel.org/all/CAL_bE8LsmCQ-FAtYDuwbJhOkt9p2wwYQwAbMh=PifC=VsiBM6A@mail.gmail.com/ [0]
Fixes: d9b05321e2 ("futex: Move futex_hash_free() back to __mmput()")
Reported-by: Yiming Qian <yimingqian591@gmail.com>
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Reject zero-length writes from userspace that corrupt
Debug Facility buffers
- Replace one s390 PCI maintainer
- Remove SCLP_OFB Kconfig option and enable the guarded code
unconditionally
- Replace incorrect use of phys_to_folio() to virt_to_folio()
in do_secure_storage_access()
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Merge tag 's390-7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Alexander Gordeev:
- Reject zero-length writes from userspace that corrupt Debug Facility
buffers
- Replace one s390 PCI maintainer
- Remove SCLP_OFB Kconfig option and enable the guarded code
unconditionally
- Replace incorrect use of phys_to_folio() to virt_to_folio() in
do_secure_storage_access()
* tag 's390-7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/mm: Fix phys_to_folio() usage in do_secure_storage_access()
s390/sclp: Remove SCLP_OFB Kconfig option
MAINTAINERS: Replace one of the maintainers for s390/pci
s390/debug: Reject zero-length input in debug_input_flush_fn()
s390/debug: Reject zero-length input before trimming a newline
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Merge tag 'io_uring-7.1-20260430' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring fixes from Jens Axboe:
- Remove dead struct io_buffer_list member
- Fix for incrementally consumed buffers with recvmsg multishot, which
requires a minimum value left in a buffer for any receive for the
headers. If there's still a bit of buffer left but it's smaller than
that value, then userspace will see a spurious -EFAULT returned in
the CQE
- Locking fix for the DEFER_TASKRUN retry list, which otherwise could
race with fallback cancelations. If the task is exiting with
task_work left in both the normal and retry list AND the exit cleanup
races with the task running task work, then entries could either be
doubly completed or lost
- Cap NAPI busy poll timeout to something sane, to avoid syzbot running
into excessive polling and triggering warnings around that
* tag 'io_uring-7.1-20260430' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
io_uring/tw: serialize ctx->retry_llist with ->uring_lock
io_uring/napi: cap busy_poll_to 10 msec
io_uring/kbuf: support min length left for incremental buffers
io_uring/kbuf: kill dead struct io_buffer_list 'nr_entries' member
There are a couple of nasty issues fixed here in the axiado and rockchip
drivers. We've also got more of the fixes from Johan here, this time
for the two Cadence drivers, plus a couple of other similar fixes from
John and Felix.
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Merge tag 'spi-fix-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"There are a couple of nasty issues fixed here in the axiado and
rockchip drivers. We've also got more of the fixes from Johan here,
this time for the two Cadence drivers, plus a couple of other similar
fixes from John and Felix"
* tag 'spi-fix-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: amlogic-spisg: initialize completion before requesting IRQ
spi: axiado: replace usleep_range() with udelay() in IRQ path
spi: cadence-quadspi: fix runtime pm and clock imbalance on unbind
spi: cadence-quadspi: fix unclocked access on unbind
spi: cadence-quadspi: fix clock imbalance on probe failure
spi: cadence-quadspi: fix runtime pm disable imbalance on probe failure
spi: cadence: fix clock imbalance on probe failure
spi: cadence: fix unclocked access on unbind
spi: rockchip: Drop unused and broken CR0 macros
spi: rockchip: Read ISR, not IMR, to detect cs-inactive IRQ
spi: rzv2h-rspi: Fix silent failure in clock setup error path
Commit 2e8a1acea8 ("arm64: signal: Improve POR_EL0 handling to
avoid uaccess failures") delayed the write to POR_EL0 in
rt_sigreturn to avoid spurious uaccess failures. This change however
relies on the poe_context frame record being present: on a system
supporting POE, calling sigreturn without a poe_context record now
results in writing arbitrary data from the kernel stack into POR_EL0.
Fix this by adding a __valid_fields member to struct
user_access_state, and zeroing the struct on allocation.
restore_poe_context() then indicates that the por_el0 field is valid
by setting the corresponding bit in __valid_fields, and
restore_user_access_state() only touches POR_EL0 if there is a valid
value to set it to. This is in line with how POR_EL0 was originally
handled; all frame records are currently optional, except
fpsimd_context.
To ensure that __valid_fields is kept in sync, fields (currently
just por_el0) are now accessed via accessors and prefixed with __ to
discourage direct access.
Fixes: 2e8a1acea8 ("arm64: signal: Improve POR_EL0 handling to avoid uaccess failures")
Cc: <stable@vger.kernel.org>
Reported-by: Will Deacon <will@kernel.org>
Signed-off-by: Kevin Brodsky <kevin.brodsky@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
A fix from Arnd readding a dependency on gpiolib which was implicitly
pulled in via an OF specific route which got removed as part of a
cleanup.
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Merge tag 'regulator-fix-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"A fix from Arnd re-adding a dependency on gpiolib which was implicitly
pulled in via an OF specific route which got removed as part of a
cleanup"
* tag 'regulator-fix-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: rpi-panel-attiny: add back GPIOLIB dependency
A fix from Colin for a spelling mistake in a dev_warn() message.
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Merge tag 'regmap-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap fix from Mark Brown:
"A fix from Colin for a spelling mistake in a dev_warn() message"
* tag 'regmap-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: sdw-mbq: Fix spelling mistake "undeferable" -> "undeferrable"
and the remainder are for post-7.0 issues or aren't deemed suitable for
backporting.
There's a 2 patch DAMON series from SeongJae Park which address races
which could lead to use-after-free errors. And a 3 patch DAMON series
which avoids the possibility of presenting stale parameter values to
users.
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Merge tag 'mm-hotfixes-stable-2026-04-30-15-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM fixes from Andrew Morton:
"20 hotfixes. All are for MM (and for MMish maintainers). 9 are
cc:stable and the remainder are for post-7.0 issues or aren't deemed
suitable for backporting.
There are two DAMON series from SeongJae Park which address races
which could lead to use-after-free errors, and avoid the possibility
of presenting stale parameter values to users"
* tag 'mm-hotfixes-stable-2026-04-30-15-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm: memcontrol: fix rcu unbalance in get_non_dying_memcg_end()
mm/userfaultfd: detect VMA type change after copy retry in mfill_copy_folio_retry()
MAINTAINERS: remove stale kdump project URL
mm/damon/stat: detect and use fresh enabled value
mm/damon/lru_sort: detect and use fresh enabled and kdamond_pid values
mm/damon/reclaim: detect and use fresh enabled and kdamond_pid values
selftests/mm: specify requirement for PROC_MEM_ALWAYS_FORCE=y
mm/damon/sysfs-schemes: protect path kfree() with damon_sysfs_lock
mm/damon/sysfs-schemes: protect memcg_path kfree() with damon_sysfs_lock
MAINTAINERS: update Li Wang's email address
MAINTAINERS, mailmap: update email address for Qi Zheng
MAINTAINERS: update Liam's email address
mm/hugetlb_cma: round up per_node before logging it
MAINTAINERS: fix regex pattern in CORE MM category
mm/vma: do not try to unmap a VMA if mmap_prepare() invoked from mmap()
mm: start background writeback based on per-wb threshold for strictlimit BDIs
kho: fix error handling in kho_add_subtree()
liveupdate: fix return value on session allocation failure
mailmap: update entry for Dan Carpenter
vmalloc: fix buffer overflow in vrealloc_node_align()
The final part of [data, end) segment may overflow into the next page of
init_pg_end[1] which is the gap page before early_init_stack[2]:
[1]
crash_arm64_v9.0.1> vtop ffffffed00601000
VIRTUAL PHYSICAL
ffffffed00601000 83401000
PAGE DIRECTORY: ffffffecffd62000
PGD: ffffffecffd62da0 => 10000000833fb003
PMD: ffffff80033fb018 => 10000000833fe003
PTE: ffffff80033fe008 => 68000083401f03
PAGE: 83401000
PTE PHYSICAL FLAGS
68000083401f03 83401000 (VALID|SHARED|AF|NG|PXN|UXN)
PAGE PHYSICAL MAPPING INDEX CNT FLAGS
fffffffec00d0040 83401000 0 0 1 4000 reserved
[2]
ffffffed002c8000 (r) __pi__data
ffffffed0054e000 (d) __pi___bss_start
ffffffed005f5000 (b) __pi_init_pg_dir
ffffffed005fe000 (b) __pi_init_pg_end
ffffffed005ff000 (B) early_init_stack
ffffffed00608000 (b) __pi__end
For 4K pages, the early kernel mapping may use 2MB block entries but the
kernel segments are only 64KB aligned. Segment boundaries that fall
within a 2MB block therefore require a PTE table so that different
attributes can be applied on either side of the boundary.
KERNEL_SEGMENT_COUNT still correctly counts the five permanent kernel
VMAs registered by declare_kernel_vmas(). However, since commit
5973a62efa ("arm64: map [_text, _stext) virtual address range
non-executable+read-only"), the early mapper also maps [_text, _stext)
separately from [_stext, _etext). This adds one more early-only split
and can require one more page-table page than the existing
EARLY_SEGMENT_EXTRA_PAGES allowance reserves.
Increase the 4K-page early mapping allowance by one page to cover that
additional split.
Fixes: 5973a62efa ("arm64: map [_text, _stext) virtual address range non-executable+read-only")
Assisted-by: TRAE:GLM-5.1
Suggested-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
[catalin.marinas@arm.com: rewrote part of the commit log]
[catalin.marinas@arm.com: expanded the code comment]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
kselftest includes kernel uAPI headers with option:
-isystem $(top_srcdir)/usr/include
Include <asm/ptrace.h> in libc-gcs.c for the definition of struct
user_gcs from the uAPI headers, and remove the redundant definition in
gcs-util.h. This fixes a compilation error on systems where the
toolchain defines NT_ARM_GCS.
Fixes: a505a52b4e ("kselftest/arm64: Add a GCS test program built with the system libc")
Signed-off-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
- Add missing pad and extensions check (Jonathan)
- Reject unsafe PAT indices for CPU cached memory (Jia)
Driver Fixes:
- Drop registration of guc_submit_wedged_fini from xe_guc_submit_wedge (Brost)
- Xe3p tuning and workaround fixes (Roper, Gustavo)
- USE drm mm instead of drm SA for CCS read/write (Satya)
- Fix leaks and null derefs (Shuicheng)
- Fix Wa_18022495364 (Tvrtko)
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Merge tag 'drm-xe-fixes-2026-04-30' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-fixes
API Fixes:
- Add missing pad and extensions check (Jonathan)
- Reject unsafe PAT indices for CPU cached memory (Jia)
Driver Fixes:
- Drop registration of guc_submit_wedged_fini from xe_guc_submit_wedge (Brost)
- Xe3p tuning and workaround fixes (Roper, Gustavo)
- USE drm mm instead of drm SA for CCS read/write (Satya)
- Fix leaks and null derefs (Shuicheng)
- Fix Wa_18022495364 (Tvrtko)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/afO05KvmFMn_7qcY@intel.com
octal SPI NAND chips which use a specific pattern for stuffing more
address bits in some operations. This PR only carries the use of the a
spi-mem flag in SPI NAND. This flag has been added in the spi-mem layer
just before the merge window through the spi tree.
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Merge tag 'mtd/fixes-for-7.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull mtd fixes from Miquel Raynal:
"Besides an out-of-bound bug, this is about properly supporting Winbond
octal SPI NAND chips which use a specific pattern for stuffing more
address bits in some operations. This uses the spi-mem flag in SPI
NAND that was added to the spi-mem layer just before the merge window
through the spi tree"
* tag 'mtd/fixes-for-7.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
mtd: spinand: winbond: Fix ODTR write VCR on W35NxxJW
mtd: spinand: winbond: Set the packed page read flag to W35N02/04JW
mtd: spinand: Add support for packed read data ODTR commands
mtd: spi-nor: debugfs: fix out-of-bounds read in spi_nor_params_show()
- Fix removal code ordering in the ACPI TAD driver, refine timer value
computations and checks in its RTC class device interface, make it
use the __ATTRIBUTE_GROUPS() macro, and fix a comment in it (Rafael
Wysocki)
- Fix EINJV2 memory error injection in APEI (Tony Luck)
- Add missing notifier_block structure forward declaration to
acpi_bus.h (Bartosz Golaszewski)
- Fix related_cpus inconsistency during CPU hotplug in the ACPI CPPC
library (Jinjie Ruan)
- Add a quirk to force native backlight on HP OMEN 16 (8A44) in the
ACPI video bus driver (Shivam Kalra)
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Merge tag 'acpi-7.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI support fixes from Rafael Wysocki:
"These fix leftover issues in the ACPI Time and Alarm Device (TAD)
driver on top of the recently merged updates of it and address
assorted issues in the ACPI support code:
- Fix removal code ordering in the ACPI TAD driver, refine timer
value computations and checks in its RTC class device interface,
make it use the __ATTRIBUTE_GROUPS() macro, and fix a comment in it
(Rafael Wysocki)
- Fix EINJV2 memory error injection in APEI (Tony Luck)
- Add missing notifier_block structure forward declaration to
acpi_bus.h (Bartosz Golaszewski)
- Fix related_cpus inconsistency during CPU hotplug in the ACPI CPPC
library (Jinjie Ruan)
- Add a quirk to force native backlight on HP OMEN 16 (8A44) in the
ACPI video bus driver (Shivam Kalra)"
* tag 'acpi-7.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: bus: add missing forward declaration to acpi_bus.h
ACPI: video: force native backlight on HP OMEN 16 (8A44)
ACPI: TAD: Fix up a comment in acpi_tad_probe()
ACPI: TAD: RTC: Refine timer value computations and checks
ACPI: TAD: Use devres for all driver cleanup
ACPI: TAD: Use __ATTRIBUTE_GROUPS() macro
ACPI: CPPC: Fix related_cpus inconsistency during CPU hotplug
ACPI: APEI: EINJ: Fix EINJV2 memory error injection
ACPICA: Provide #defines for EINJV2 error types
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Merge tag 'v7.1-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
- multichannel crediting fix
- memory allocation improvement for smb2_compound_op
- remove some dead code
* tag 'v7.1-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: change_conf needs to be called for session setup
smb: client: change allocation requirements in smb2_compound_op
smb/client: remove unused smb3_parse_opt()
