Jan Kara [Thu, 26 Mar 2026 09:54:27 +0000 (10:54 +0100)]
fs: Provide functions for handling mapping_metadata_bhs directly
As part of transition toward moving mapping_metadata_bhs to fs-private
part of the inode, provide functions for operations on this list
directly instead of going through the inode / mapping.
Jan Kara [Thu, 26 Mar 2026 09:54:26 +0000 (10:54 +0100)]
fs: Switch inode_has_buffers() to take mapping_metadata_bhs
As part of a move towards placing mapping_metadata_bhs in fs-private
inode part, switch inode_has_buffers() to take mapping_metadata_bhs
and rename the function to mmb_has_buffers().
Jan Kara [Thu, 26 Mar 2026 09:54:25 +0000 (10:54 +0100)]
fs: Make bhs point to mapping_metadata_bhs
Make buffer heads point to mapping_metadata_bhs instead of struct
address_space. This makes the code more self contained. For the (only)
case of IO error handling where we really need to reach struct
address_space add a pointer to the mapping from mapping_metadata_bhs.
Jan Kara [Thu, 26 Mar 2026 09:54:24 +0000 (10:54 +0100)]
fs: Move metadata bhs tracking to a separate struct
Instead of tracking metadata bhs for a mapping using i_private_list and
i_private_lock create a dedicated mapping_metadata_bhs struct for it.
So far this struct is embedded in address_space but that will be
switched for per-fs private inode parts later in the series. This also
changes the locking from bdev mapping's i_private_lock to a new lock
embedded in mapping_metadata_bhs to untangle the i_private_lock locking
for maintaining lists of metadata bhs and the locking for looking up /
reclaiming bdev's buffer heads. The locking in remove_assoc_map() gets
more complex due to this but overall this looks like a reasonable
tradeoff.
Jan Kara [Thu, 26 Mar 2026 09:54:23 +0000 (10:54 +0100)]
fs: Fold fsync_buffers_list() into sync_mapping_buffers()
There's only single caller of fsync_buffers_list() so untangle the code
a bit by folding fsync_buffers_list() into sync_mapping_buffers(). Also
merge the comments and update them to reflect current state of code.
Jan Kara [Thu, 26 Mar 2026 09:54:22 +0000 (10:54 +0100)]
fs: Drop osync_buffers_list()
The function only waits for already locked buffers in the list of
metadata bhs. fsync_buffers_list() has just waited for all outstanding
IO on buffers so this isn't adding anything useful. Comment in front of
fsync_buffers_list() mentions concerns about buffers being moved out
from tmp list back to mappings i_private_list but these days
mark_buffer_dirty_inode() doesn't touch inodes with b_assoc_map set so
that cannot happen. Just delete the stale code.
Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://patch.msgid.link/20260326095354.16340-70-jack@suse.cz Tested-by: syzbot@syzkaller.appspotmail.com Signed-off-by: Christian Brauner <brauner@kernel.org>
Jan Kara [Thu, 26 Mar 2026 09:54:21 +0000 (10:54 +0100)]
kvm: Use private inode list instead of i_private_list
Instead of using mapping->i_private_list use a list in private part of
the inode.
CC: kvm@vger.kernel.org CC: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://patch.msgid.link/20260326095354.16340-69-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
Jan Kara [Thu, 26 Mar 2026 09:54:20 +0000 (10:54 +0100)]
fs: Remove i_private_data
Nobody is using it anymore.
Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://patch.msgid.link/20260326095354.16340-68-jack@suse.cz Tested-by: syzbot@syzkaller.appspotmail.com Signed-off-by: Christian Brauner <brauner@kernel.org>
Jan Kara [Thu, 26 Mar 2026 09:54:19 +0000 (10:54 +0100)]
aio: Stop using i_private_data and i_private_lock
Instead of using i_private_data and i_private_lock, just create aio
inodes with appropriate necessary fields.
Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://patch.msgid.link/20260326095354.16340-67-jack@suse.cz Tested-by: syzbot@syzkaller.appspotmail.com Signed-off-by: Christian Brauner <brauner@kernel.org>
Jan Kara [Thu, 26 Mar 2026 09:54:17 +0000 (10:54 +0100)]
fs: Stop using i_private_data for metadata bh tracking
All filesystem using generic metadata bh tracking are using bdev mapping
as a backing for these bhs. Stop using i_private_data for it and get to
bdev mapping directly.
Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://patch.msgid.link/20260326095354.16340-65-jack@suse.cz Tested-by: syzbot@syzkaller.appspotmail.com Signed-off-by: Christian Brauner <brauner@kernel.org>
Jan Kara [Thu, 26 Mar 2026 09:54:16 +0000 (10:54 +0100)]
fs: Ignore inode metadata buffers in inode_lru_isolate()
There are only a few filesystems that use generic tracking of inode
metadata buffer heads. As such the logic to reclaim tracked metadata
buffer heads in inode_lru_isolate() doesn't bring a benefit big enough
to justify intertwining of inode reclaim and metadata buffer head
tracking. Just treat tracked metadata buffer heads as any other metadata
filesystem has to properly clean up on inode eviction and stop handling
it in inode_lru_isolate(). As a result filesystems using generic
tracking of metadata buffer heads may now see dirty metadata buffers in
their .evict methods more often which can slow down inode reclaim but
given these filesystems aren't used in performance demanding setups we
should be fine.
Jan Kara [Thu, 26 Mar 2026 09:54:15 +0000 (10:54 +0100)]
affs: Sync and invalidate metadata buffers from affs_evict_inode()
There are only very few filesystems using generic metadata buffer head
tracking and everybody is paying the overhead. When we remove this
tracking for inode reclaim code .evict will start to see inodes with
metadata buffers attached so write them out and prune them.
Jan Kara [Thu, 26 Mar 2026 09:54:14 +0000 (10:54 +0100)]
bfs: Sync and invalidate metadata buffers from bfs_evict_inode()
There are only very few filesystems using generic metadata buffer head
tracking and everybody is paying the overhead. When we remove this
tracking for inode reclaim code .evict will start to see inodes with
metadata buffers attached so write them out and prune them.
Jan Kara [Thu, 26 Mar 2026 09:54:13 +0000 (10:54 +0100)]
ext4: Sync and invalidate metadata buffers from ext4_evict_inode()
There are only very few filesystems using generic metadata buffer head
tracking and everybody is paying the overhead. When we remove this
tracking for inode reclaim code .evict will start to see inodes with
metadata buffers attached so write them out and prune them.
Acked-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://patch.msgid.link/20260326095354.16340-61-jack@suse.cz Tested-by: syzbot@syzkaller.appspotmail.com Signed-off-by: Christian Brauner <brauner@kernel.org>
Jan Kara [Thu, 26 Mar 2026 09:54:12 +0000 (10:54 +0100)]
ext2: Sync and invalidate metadata buffers from ext2_evict_inode()
There are only very few filesystems using generic metadata buffer head
tracking and everybody is paying the overhead. When we remove this
tracking for inode reclaim code .evict will start to see inodes with
metadata buffers attached so write them out and prune them.
Jan Kara [Thu, 26 Mar 2026 09:54:11 +0000 (10:54 +0100)]
minix: Sync and invalidate metadata buffers from minix_evict_inode()
There are only very few filesystems using generic metadata buffer head
tracking and everybody is paying the overhead. When we remove this
tracking for inode reclaim code .evict will start to see inodes with
metadata buffers attached so write them out and prune them.
Jan Kara [Thu, 26 Mar 2026 09:54:10 +0000 (10:54 +0100)]
udf: Sync and invalidate metadata buffers from udf_evict_inode()
There are only very few filesystems using generic metadata buffer head
tracking and everybody is paying the overhead. When we remove this
tracking for inode reclaim code .evict will start to see inodes with
metadata buffers attached so write them out and prune them.
Jan Kara [Thu, 26 Mar 2026 09:54:09 +0000 (10:54 +0100)]
fat: Sync and invalidate metadata buffers from fat_evict_inode()
There are only very few filesystems using generic metadata buffer head
tracking and everybody is paying the overhead. When we remove this
tracking for inode reclaim code .evict will start to see inodes with
metadata buffers attached so write them out and prune them.
Jan Kara [Thu, 26 Mar 2026 09:54:07 +0000 (10:54 +0100)]
fs: Drop sync_mapping_buffers() from __generic_file_fsync()
No filesystem calling __generic_file_fsync() uses metadata bh tracking.
Drop sync_mapping_buffers() call from __generic_file_fsync() as it's
pointless now which untangles buffer head handling from fs/libfs.c.
Jan Kara [Thu, 26 Mar 2026 09:54:06 +0000 (10:54 +0100)]
fat: Switch to generic_buffers_fsync_noflush()
FAT uses a list of metadata bhs attached to an inode. Switch it to use
generic_buffers_fsync_noflush() instead of __generic_file_fsync() as
we'll be removing metadata bh handling from __generic_file_fsync().
Jan Kara [Thu, 26 Mar 2026 09:54:05 +0000 (10:54 +0100)]
bfs: Switch to generic_buffers_fsync()
BFS uses list of metadata bhs attached to an inode. Switch it to use
generic_buffers_fsync() instead of generic_file_fsync() as we'll be
removing metadata bh handling from generic_file_fsync().
Jan Kara [Thu, 26 Mar 2026 09:54:04 +0000 (10:54 +0100)]
minix: Switch to generic_buffers_fsync()
Minix uses list of metadata bhs attached to an inode. Switch it to
generic_buffers_fsync() instead of generic_file_fsync() as we'll be
removing metadata bh handling from generic_file_fsync().
Jan Kara [Thu, 26 Mar 2026 09:54:03 +0000 (10:54 +0100)]
udf: Switch to generic_buffers_fsync()
UDF uses metadata bh list attached to inode. Switch it to
generic_buffers_fsync() instead of generic_file_fsync() as we'll be
removing metadata bh handling from generic_file_fsync().
Jan Kara [Thu, 26 Mar 2026 09:54:02 +0000 (10:54 +0100)]
fs: Remove inode lock from __generic_file_fsync()
Inode lock in __generic_file_fsync() protects sync_mapping_buffers() and
sync_inode_metadata() calls. Neither sync_mapping_buffers() nor
sync_inode_metadata() themselves need the protection by inode_lock and
both metadata buffer head writeback and inode writeback can happen
without inode lock (either in case of background writeback or sync(2)
calls). The only protection inode_lock can possibly provide is that
write(2) or other inode modifying calls cannot happen in the middle of
bh+inode writeout and thus result in writeout of inconsistent metadata.
However if writes and fsyncs race, background writeback can submit
inconsistent metadata just after fsync completed even with inode_lock
protecting fsync so this seems moot as well. So let's remove the
apparently pointless inode_lock protection.
Jan Kara [Thu, 26 Mar 2026 09:53:59 +0000 (10:53 +0100)]
bdev: Drop pointless invalidate_inode_buffers() call
Nobody is calling mark_buffer_dirty_inode() with internal bdev inode and
it doesn't make sense for internal bdev inode to have any metadata
buffer heads. Just drop the pointless invalidate_inode_buffers() call
and consequently the whole bdev_evict_inode() because generic code takes
care of the rest.
Jan Kara [Thu, 26 Mar 2026 09:53:58 +0000 (10:53 +0100)]
ocfs2: Drop pointless sync_mapping_buffers() calls
ocfs2 never calls mark_buffer_dirty_inode() and thus its metadata
buffers list is always empty. Drop the pointless sync_mapping_buffers()
calls.
CC: Joel Becker <jlbec@evilplan.org> CC: Joseph Qi <joseph.qi@linux.alibaba.com> CC: ocfs2-devel@lists.linux.dev Signed-off-by: Jan Kara <jack@suse.cz> Link: https://patch.msgid.link/20260326095354.16340-46-jack@suse.cz Tested-by: syzbot@syzkaller.appspotmail.com Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
Jan Kara [Thu, 26 Mar 2026 09:53:57 +0000 (10:53 +0100)]
ntfs3: Drop pointless sync_mapping_buffers() and invalidate_inode_buffers() calls
ntfs3 never calls mark_buffer_dirty_inode() and thus its metadata
buffers list is always empty. Drop the pointless sync_mapping_buffers()
and invalidate_inode_buffers() calls.
CC: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> CC: ntfs3@lists.linux.dev Signed-off-by: Jan Kara <jack@suse.cz> Link: https://patch.msgid.link/20260326095354.16340-45-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
Jan Kara [Thu, 26 Mar 2026 09:53:56 +0000 (10:53 +0100)]
gfs2: Don't zero i_private_data
Remove the explicit zeroing of mapping->i_private_data since this
field is no longer used.
CC: Andreas Gruenbacher <agruenba@redhat.com> CC: gfs2@lists.linux.dev Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://patch.msgid.link/20260326095354.16340-44-jack@suse.cz Tested-by: syzbot@syzkaller.appspotmail.com Signed-off-by: Christian Brauner <brauner@kernel.org>
Linus Torvalds [Sun, 8 Mar 2026 19:13:09 +0000 (12:13 -0700)]
Merge tag 'efi-fixes-for-v7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI fix from Ard Biesheuvel:
"Fix for the x86 EFI workaround keeping boot services code and data
regions reserved until after SetVirtualAddressMap() completes:
deferred struct page initialization may result in some of this memory
being lost permanently"
* tag 'efi-fixes-for-v7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
x86/efi: defer freeing of boot services memory
Linus Torvalds [Sun, 8 Mar 2026 01:12:06 +0000 (17:12 -0800)]
Merge tag 'x86-urgent-2026-03-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
- Fix SEV guest boot failures in certain circumstances, due to
very early code relying on a BSS-zeroed variable that isn't
actually zeroed yet an may contain non-zero bootup values
Move the variable into the .data section go gain even earlier
zeroing
- Expose & allow the IBPB-on-Entry feature on SNP guests, which
was not properly exposed to guests due to initial implementational
caution
- Fix O= build failure when CONFIG_EFI_SBAT_FILE is using relative
file paths
- Fix the various SNC (Sub-NUMA Clustering) topology enumeration
bugs/artifacts (sched-domain build errors mostly).
SNC enumeration data got more complicated with Granite Rapids X
(GNR) and Clearwater Forest X (CWF), which exposed these bugs
and made their effects more serious
- Also use the now sane(r) SNC code to fix resctrl SNC detection bugs
- Work around a historic libgcc unwinder bug in the vdso32 sigreturn
code (again), which regressed during an overly aggressive recent
cleanup of DWARF annotations
* tag 'x86-urgent-2026-03-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/entry/vdso32: Work around libgcc unwinder bug
x86/resctrl: Fix SNC detection
x86/topo: Fix SNC topology mess
x86/topo: Replace x86_has_numa_in_package
x86/topo: Add topology_num_nodes_per_package()
x86/numa: Store extra copy of numa_nodes_parsed
x86/boot: Handle relative CONFIG_EFI_SBAT_FILE file paths
x86/sev: Allow IBPB-on-Entry feature for SNP guests
x86/boot/sev: Move SEV decompressor variables into the .data section
Linus Torvalds [Sun, 8 Mar 2026 01:09:15 +0000 (17:09 -0800)]
Merge tag 'timers-urgent-2026-03-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Ingo Molnar:
"Make clock_adjtime() syscall timex validation slightly more permissive
for auxiliary clocks, to not reject syscalls based on the status field
that do not try to modify the status field.
This makes the ABI behavior in clock_adjtime() consistent with
CLOCK_REALTIME"
* tag 'timers-urgent-2026-03-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timekeeping: Fix timex status validation for auxiliary clocks
Linus Torvalds [Sun, 8 Mar 2026 01:07:13 +0000 (17:07 -0800)]
Merge tag 'sched-urgent-2026-03-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Ingo Molnar:
"Fix a DL scheduler bug that may corrupt internal metrics during PI and
setscheduler() syscalls, resulting in kernel warnings and misbehavior.
Found during stress-testing"
* tag 'sched-urgent-2026-03-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/deadline: Fix missing ENQUEUE_REPLENISH during PI de-boosting
Linus Torvalds [Sat, 7 Mar 2026 22:04:50 +0000 (14:04 -0800)]
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Two core changes and the rest in drivers, one core change to quirk the
behaviour of the Iomega Zip drive and one to fix a hang caused by tag
reallocation problems, which has mostly been seen by the iscsi client.
Note the latter fixes the problem but still has a slight sysfs memory
leak, so will be amended in the next pull request (once we've run the
fix for the fix through our testing)"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: target: Fix recursive locking in __configfs_open_file()
scsi: devinfo: Add BLIST_SKIP_IO_HINTS for Iomega ZIP
scsi: mpi3mr: Clear reset history on ready and recheck state after timeout
scsi: core: Fix refcount leak for tagset_refcnt
Linus Torvalds [Sat, 7 Mar 2026 20:38:16 +0000 (12:38 -0800)]
Merge tag 'parisc-for-7.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
"While testing Sasha Levin's 'kallsyms: embed source file:line info in
kernel stack traces' patch series, which increases the typical kernel
image size, I found some issues with the parisc initial kernel mapping
which may prevent the kernel to boot.
The three small patches here fix this"
* tag 'parisc-for-7.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix initial page table creation for boot
parisc: Check kernel mapping earlier at bootup
parisc: Increase initial mapping to 64 MB with KALLSYMS
- Fix precision backtracking with linked registers (Eduard Zingerman)
- Fix linker flags detection for resolve_btfids (Ihor Solodrai)
- Fix race in update_ftrace_direct_add/del (Jiri Olsa)
- Fix UAF in bpf_trampoline_link_cgroup_shim (Lang Xu)
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
resolve_btfids: Fix linker flags detection
selftests/bpf: add reproducer for spurious precision propagation through calls
bpf: collect only live registers in linked regs
Revert "selftests/bpf: Update reg_bound range refinement logic"
selftests/bpf: test refining u32/s32 bounds when ranges cross min/max boundary
bpf: Fix u32/s32 bounds when ranges cross min/max boundary
bpf: Fix a UAF issue in bpf_trampoline_link_cgroup_shim
ftrace: Add missing ftrace_lock to update_ftrace_direct_add/del
Linus Torvalds [Sat, 7 Mar 2026 19:56:55 +0000 (11:56 -0800)]
Merge tag 'rcu-fixes.v7.0-20260307a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU selftest fixes from Boqun Feng:
"Fix a regression in RCU torture test pre-defined scenarios caused by
commit 7dadeaa6e851 ("sched: Further restrict the preemption modes")
which limits PREEMPT_NONE to architectures that do not support
preemption at all and PREEMPT_VOLUNTARY to those architectures that do
not yet have PREEMPT_LAZY support.
Since major architectures (e.g. x86 and arm64) no longer support
CONFIG_PREEMPT_NONE and CONFIG_PREEMPT_VOLUNTARY, using them in
rcutorture, rcuscale, refscale, and scftorture pre-defined scenarios
causes config checking errors.
Switch these kconfigs to PREEMPT_LAZY"
* tag 'rcu-fixes.v7.0-20260307a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux:
scftorture: Update due to x86 not supporting none/voluntary preemption
refscale: Update due to x86 not supporting none/voluntary preemption
rcuscale: Update due to x86 not supporting none/voluntary preemption
rcutorture: Update due to x86 not supporting none/voluntary preemption
Linus Torvalds [Sat, 7 Mar 2026 17:50:54 +0000 (09:50 -0800)]
Merge tag 'trace-v7.0-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
- Fix possible NULL pointer dereference in trace_data_alloc()
On the trace_data_alloc() error path, it can call trigger_data_free()
with a NULL pointer. This used to be a kfree() but was changed to
trigger_data_free() to clean up any partial initialization. The issue
is that trigger_data_free() does not expect a NULL pointer. Have
trigger_data_free() return safely on NULL pointer.
- Fix multiple events on the command line and bootconfig
If multiple events are enabled on the command line separately and not
grouped, only the last event gets enabled. That is:
trace_event=sched_switch trace_event=sched_waking
will only enable sched_waking whereas:
trace_event=sched_switch,sched_waking
will enable both.
The bootconfig makes it even worse as the second way is the more
common method.
The issue is that a temporary buffer is used to store the events to
enable later in boot. Each time the cmdline callback is called, it
overwrites what was previously there.
Have the callback append the next value (delimited by a comma) if the
temporary buffer already has content.
- Fix command line trace_buffer_size if >= 2G
The logic to allocate the trace buffer uses "int" for the size
parameter in the command line code causing overflow issues if more
that 2G is specified.
* tag 'trace-v7.0-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Fix trace_buf_size= cmdline parameter with sizes >= 2G
tracing: Fix enabling multiple events on the kernel command line and bootconfig
tracing: Add NULL pointer check to trigger_data_free()
Ihor Solodrai [Thu, 5 Mar 2026 01:47:30 +0000 (17:47 -0800)]
resolve_btfids: Fix linker flags detection
The "|| echo -lzstd" default makes zstd an unconditional link
dependency of resolve_btfids. On systems where libzstd-dev is not
installed and pkg-config fails, the linker fails:
ld: cannot find -lzstd: No such file or directory
libzstd is a transitive dependency of libelf, so the -lzstd flag is
strictly necessary only for static builds [1].
Remove ZSTD_LIBS variable, and instead set LIBELF_LIBS depending on
whether the build is static or not. Use $(HOSTPKG_CONFIG) as primary
source of the flags list.
Also add a default value for HOSTPKG_CONFIG in case it's not built via
the toplevel Makefile. Pass it from selftests/bpf too.
Linus Torvalds [Sat, 7 Mar 2026 16:16:48 +0000 (08:16 -0800)]
Merge tag 'driver-core-7.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core fix from Danilo Krummrich:
- Revert "driver core: enforce device_lock for driver_match_device()":
When a device is already present in the system and a driver is
registered on the same bus, we iterate over all devices registered on
this bus to see if one of them matches. If we come across an already
bound one where the corresponding driver crashed while holding the
device lock (e.g. in probe()) we can't make any progress anymore.
Thus, revert and clarify that an implementer of struct bus_type must
not expect match() to be called with the device lock held.
* tag 'driver-core-7.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core:
Revert "driver core: enforce device_lock for driver_match_device()"
====================
bpf: Fix precision backtracking bug with linked registers
Emil Tsalapatis reported a verifier bug hit by the scx_lavd sched_ext
scheduler. The essential part of the verifier log looks as follows:
436: ...
// checkpoint hit for 438: (1d) if r7 == r8 goto ...
frame 3: propagating r2,r7,r8
frame 2: propagating r6
mark_precise: frame3: last_idx ...
mark_precise: frame3: regs=r2,r7,r8 stack= before 436: ...
mark_precise: frame3: regs=r2,r7 stack= before 435: ...
mark_precise: frame3: regs=r2,r7 stack= before 434: (85) call bpf_trace_vprintk#177
verifier bug: backtracking call unexpected regs 84
The log complains that registers r2 and r7 are tracked as precise
while processing the bpf_trace_vprintk() call in precision backtracking.
This can't be right, as r2 is reset by the call and there is nothing
to backtrack it to. The precision propagation is triggered when
a checkpoint is hit at instruction 438, r2 is dead at that instruction.
This happens because of the following sequence of events:
- Instruction 438 is first reached with registers r2 and r7 having
the same id via a path that does not call bpf_trace_vprintk():
- Checkpoint is created at 438.
- The jump at 438 is predicted, hence r7 and registers linked to it
(r2) are propagated as precise, marking r2 and r7 precise in the
checkpoint.
- Instruction 438 is reached a second time with r2 undefined and via
a path that calls bpf_trace_vprintk():
- Checkpoint is hit.
- propagate_precision() picks registers r2 and r7 and propagates
precision marks for those up to the helper call.
The root cause is the fact that states_equal() and
propagate_precision() assume that the precision flag can't be set for a
dead register (as computed by compute_live_registers()).
However, this is not the case when linked registers are at play.
Fix this by accounting for live register flags in
collect_linked_regs().
---
====================
selftests/bpf: add reproducer for spurious precision propagation through calls
Add a test for the scenario described in the previous commit:
an iterator loop with two paths where one ties r2/r7 via
shared scalar id and skips a call, while the other goes
through the call. Precision marks from the linked registers
get spuriously propagated to the call path via
propagate_precision(), hitting "backtracking call unexpected
regs" in backtrack_insn().
Fix an inconsistency between func_states_equal() and
collect_linked_regs():
- regsafe() uses check_ids() to verify that cached and current states
have identical register id mapping.
- func_states_equal() calls regsafe() only for registers computed as
live by compute_live_registers().
- clean_live_states() is supposed to remove dead registers from cached
states, but it can skip states belonging to an iterator-based loop.
- collect_linked_regs() collects all registers sharing the same id,
ignoring the marks computed by compute_live_registers().
Linked registers are stored in the state's jump history.
- backtrack_insn() marks all linked registers for an instruction
as precise whenever one of the linked registers is precise.
The above might lead to a scenario:
- There is an instruction I with register rY known to be dead at I.
- Instruction I is reached via two paths: first A, then B.
- On path A:
- There is an id link between registers rX and rY.
- Checkpoint C is created at I.
- Linked register set {rX, rY} is saved to the jump history.
- rX is marked as precise at I, causing both rX and rY
to be marked precise at C.
- On path B:
- There is no id link between registers rX and rY,
otherwise register states are sub-states of those in C.
- Because rY is dead at I, check_ids() returns true.
- Current state is considered equal to checkpoint C,
propagate_precision() propagates spurious precision
mark for register rY along the path B.
- Depending on a program, this might hit verifier_bug()
in the backtrack_insn(), e.g. if rY ∈ [r1..r5]
and backtrack_insn() spots a function call.
The reproducer program is in the next patch.
This was hit by sched_ext scx_lavd scheduler code.
Changes in tests:
- verifier_scalar_ids.c selftests need modification to preserve
some registers as live for __msg() checks.
- exceptions_assert.c adjusted to match changes in the verifier log,
R0 is dead after conditional instruction and thus does not get
range.
- precise.c adjusted to match changes in the verifier log, register r9
is dead after comparison and it's range is not important for test.
Linus Torvalds [Sat, 7 Mar 2026 04:27:13 +0000 (20:27 -0800)]
Merge tag 'kbuild-fixes-7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux
Pull Kbuild fixes from Nathan Chancellor:
- Split out .modinfo section from ELF_DETAILS macro, as that macro may
be used in other areas that expect to discard .modinfo, breaking
certain image layouts
- Adjust genksyms parser to handle optional attributes in certain
declarations, necessary after commit 07919126ecfc ("netfilter:
annotate NAT helper hook pointers with __rcu")
- Include resolve_btfids in external module build created by
scripts/package/install-extmod-build when it may be run on external
modules
- Avoid removing objtool binary with 'make clean', as it is required
for external module builds
* tag 'kbuild-fixes-7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux:
kbuild: Leave objtool binary around with 'make clean'
kbuild: install-extmod-build: Package resolve_btfids if necessary
genksyms: Fix parsing a declarator with a preceding attribute
kbuild: Split .modinfo out from ELF_DETAILS
Linus Torvalds [Sat, 7 Mar 2026 03:57:03 +0000 (19:57 -0800)]
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"The main changes are a fix to the way in which we manage the access
flag setting for mappings using the contiguous bit and a fix for a
hang on the kexec/hibernation path.
Summary:
- Fix kexec/hibernation hang due to bogus read-only mappings
- Fix sparse warnings in our cmpxchg() implementation
- Prevent runtime-const being used in modules, just like x86
- Fix broken elision of access flag modifications for contiguous
entries on systems without support for hardware updates
- Fix a broken SVE selftest that was testing the wrong instruction"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
selftest/arm64: Fix sve2p1_sigill() to hwcap test
arm64: contpte: fix set_access_flags() no-op check for SMMU/ATS faults
arm64: make runtime const not usable by modules
arm64: mm: Add PTE_DIRTY back to PAGE_KERNEL* to fix kexec/hibernation
arm64: Silence sparse warnings caused by the type casting in (cmp)xchg
Calvin Owens [Sat, 7 Mar 2026 03:19:25 +0000 (19:19 -0800)]
tracing: Fix trace_buf_size= cmdline parameter with sizes >= 2G
Some of the sizing logic through tracer_alloc_buffers() uses int
internally, causing unexpected behavior if the user passes a value that
does not fit in an int (on my x86 machine, the result is uselessly tiny
buffers).
Fix by plumbing the parameter's real type (unsigned long) through to the
ring buffer allocation functions, which already use unsigned long.
It has always been possible to create larger ring buffers via the sysfs
interface: this only affects the cmdline parameter.
Cc: stable@vger.kernel.org Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Link: https://patch.msgid.link/bff42a4288aada08bdf74da3f5b67a2c28b761f8.1772852067.git.calvin@wbinvd.org Fixes: 73c5162aa362 ("tracing: keep ring buffer to minimum size till used") Signed-off-by: Calvin Owens <calvin@wbinvd.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
====================
bpf: Fix u32/s32 bounds when ranges cross min/max boundary
Cover the following cases in range refinement logic for 32-bit ranges:
- s32 range crosses U32_MAX/0 boundary, positive part of the s32 range
overlaps with u32 range.
- s32 range crosses U32_MAX/0 boundary, negative part of the s32 range
overlaps with u32 range.
These cases are already handled for 64-bit range refinement.
Without the fix the test in patch 2 is rejected by the verifier.
The test was reduced from sched-ext program.
Changelog:
- v2 -> v3:
- Reverted da653de268d3 (Paul)
- Removed !BPF_F_TEST_REG_INVARIANTS flag from
crossing_32_bit_signed_boundary_2() (Paul)
- v1 -> v2:
- Extended commit message and comments (Emil)
- Targeting 'bpf' tree instead of bpf-next (Alexei)
Revert "selftests/bpf: Update reg_bound range refinement logic"
This reverts commit da653de268d32a80e135c9eb960a8147c186f1bc.
Removed logic is now covered by range_refine_in_halves()
which handles both 32-bit and 64-bit refinements.
selftests/bpf: test refining u32/s32 bounds when ranges cross min/max boundary
Two test cases for signed/unsigned 32-bit bounds refinement
when s32 range crosses the sign boundary:
- s32 range [S32_MIN..1] overlapping with u32 range [3..U32_MAX],
s32 range tail before sign boundary overlaps with u32 range.
- s32 range [-3..5] overlapping with u32 range [0..S32_MIN+3],
s32 range head after the sign boundary overlaps with u32 range.
This covers both branches added in the __reg32_deduce_bounds().
Also, crossing_32_bit_signed_boundary_2() no longer triggers invariant
violations.
bpf: Fix u32/s32 bounds when ranges cross min/max boundary
Same as in __reg64_deduce_bounds(), refine s32/u32 ranges
in __reg32_deduce_bounds() in the following situations:
- s32 range crosses U32_MAX/0 boundary, positive part of the s32 range
overlaps with u32 range:
0 U32_MAX
| [xxxxxxxxxxxxxx u32 range xxxxxxxxxxxxxx] |
|----------------------------|----------------------------|
|xxxxx s32 range xxxxxxxxx] [xxxxxxx|
0 S32_MAX S32_MIN -1
- s32 range crosses U32_MAX/0 boundary, negative part of the s32 range
overlaps with u32 range:
0 U32_MAX
| [xxxxxxxxxxxxxx u32 range xxxxxxxxxxxxxx] |
|----------------------------|----------------------------|
|xxxxxxxxx] [xxxxxxxxxxxx s32 range |
0 S32_MAX S32_MIN -1
- No refinement if ranges overlap in two intervals.
This helps for e.g. consider the following program:
call %[bpf_get_prandom_u32];
w0 &= 0xffffffff;
if w0 < 0x3 goto 1f; // on fall-through u32 range [3..U32_MAX]
if w0 s> 0x1 goto 1f; // on fall-through s32 range [S32_MIN..1]
if w0 s< 0x0 goto 1f; // range can be narrowed to [S32_MIN..-1]
r10 = 0;
1: ...;
The reg_bounds.c selftest is updated to incorporate identical logic,
refinement based on non-overflowing range halves:
Linus Torvalds [Sat, 7 Mar 2026 00:07:22 +0000 (16:07 -0800)]
Merge tag 'v7.0-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
- Fix potential oops on open failure
- Fix unmount to better free deferred closes
- Use proper constant-time MAC comparison function
- Two buffer allocation size fixes
- Two minor cleanups
- make SMB2 kunit tests a distinct module
* tag 'v7.0-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
smb: client: fix oops due to uninitialised var in smb2_unlink()
cifs: open files should not hold ref on superblock
smb: client: Compare MACs in constant time
smb/client: remove unused SMB311_posix_query_info()
smb/client: fix buffer size for smb311_posix_qinfo in SMB311_posix_query_info()
smb/client: fix buffer size for smb311_posix_qinfo in smb2_compound_op()
smb: update some doc references
smb/client: make SMB2 maperror KUnit tests a separate module
tracing: Fix enabling multiple events on the kernel command line and bootconfig
Multiple events can be enabled on the kernel command line via a comma
separator. But if the are specified one at a time, then only the last
event is enabled. This is because the event names are saved in a temporary
buffer, and each call by the init cmdline code will reset that buffer.
This also affects names in the boot config file, as it may call the
callback multiple times with an example of:
Linus Torvalds [Fri, 6 Mar 2026 21:37:52 +0000 (13:37 -0800)]
Merge tag 'pci-v7.0-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci fixes from Bjorn Helgaas:
- Initialize msi_addr_mask for OF-created PCI devices to fix sparc and
powerpc probe regressions (Nilay Shroff)
- Orphan the Altera PCIe controller driver (Dave Hansen)
* tag 'pci-v7.0-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
MAINTAINERS: Orphan Altera PCIe controller driver
sparc/PCI: Initialize msi_addr_mask for OF-created PCI devices
powerpc/pci: Initialize msi_addr_mask for OF-created PCI devices
Linus Torvalds [Fri, 6 Mar 2026 21:29:12 +0000 (13:29 -0800)]
Merge tag 'drm-fixes-2026-03-07' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Weekly fixes pull.
There is one mm fix in here for a HMM livelock triggered by the xe
driver tests. Otherwise it's a pretty wide range of fixes across the
board, ttm UAF regression fix, amdgpu fixes, nouveau doesn't crash my
laptop anymore fix, and a fair bit of misc.
Seems about right for rc3.
mm:
- mm: Fix a hmm_range_fault() livelock / starvation problem
amdxdna:
- fix invalid payload for failed command
- fix NULL ptr dereference
- fix major fw version check
- avoid inconsistent fw state on error
i915/display:
- Fix for Lenovo T14 G7 display not refreshing
xe:
- Do not preempt fence signaling CS instructions
- Some leak and finalization fixes
- Workaround fix
nouveau:
- avoid runtime suspend oops when using dp aux
panthor:
- fix gem_sync argument ordering
solomon:
- fix incorrect display output
renesas:
- fix DSI divider programming
ethosu:
- fix job submit error clean-up refcount
- fix NPU_OP_ELEMENTWISE validation
- handle possible underflows in IFM size calcs"
* tag 'drm-fixes-2026-03-07' of https://gitlab.freedesktop.org/drm/kernel: (38 commits)
accel: ethosu: Handle possible underflow in IFM size calculations
accel: ethosu: Fix NPU_OP_ELEMENTWISE validation with scalar
accel: ethosu: Fix job submit error clean-up refcount underflows
accel/amdxdna: Split mailbox channel create function
drm/panthor: Correct the order of arguments passed to gem_sync
Revert "drm/syncobj: Fix handle <-> fd ioctls with dirty stack"
drm/ttm: Fix bo resource use-after-free
nouveau/dpcd: return EBUSY for aux xfer if the device is asleep
accel/amdxdna: Fix major version check on NPU1 platform
drm/amdgpu/userq: refcount userqueues to avoid any race conditions
drm/amdgpu/userq: Consolidate wait ioctl exit path
drm/amdgpu/psp: Use Indirect access address for GFX to PSP mailbox
drm/amdgpu: Fix use-after-free race in VM acquire
drm/amd/pm: remove invalid gpu_metrics.energy_accumulator on smu v13.0.x
drm/xe: Fix memory leak in xe_vm_madvise_ioctl
drm/xe/reg_sr: Fix leak on xa_store failure
drm/xe/xe2_hpg: Correct implementation of Wa_16025250150
drm/xe/gsc: Fix GSC proxy cleanup on early initialization failure
Revert "drm/pagemap: Disable device-to-device migration"
drm/i915/psr: Fix for Panel Replay X granularity DPCD register handling
...
Linus Torvalds [Fri, 6 Mar 2026 20:34:49 +0000 (12:34 -0800)]
Merge tag 'linux_kselftest-kunit-fixes-7.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit fixes from Shuah Khan:
- Fix rust warnings when CONFIG_PRINTK is disabled
- Reduce stack usage in kunit_run_tests() to fix warnings when
CONFIG_FRAME_WARN is set to a relatively low value
- Update email address for David Gow
- Copy caller args in kunit tool in run_kernel to prevent mutation
* tag 'linux_kselftest-kunit-fixes-7.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: reduce stack usage in kunit_run_tests()
kunit: tool: copy caller args in run_kernel to prevent mutation
rust: kunit: fix warning when !CONFIG_PRINTK
MAINTAINERS: Update email address for David Gow
Linus Torvalds [Fri, 6 Mar 2026 18:33:32 +0000 (10:33 -0800)]
Merge tag 'spi-fix-v7.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fix from Mark Brown:
"One device specific fix here, it was possible we might end up trying
to dereference an invalid pointer while reporting a transfer timeout
on DesignWare controllers"
* tag 'spi-fix-v7.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: spi-dw-dma: fix print error log when wait finish transaction
Linus Torvalds [Fri, 6 Mar 2026 18:27:45 +0000 (10:27 -0800)]
Merge tag 'regulator-fix-v7.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"A couple of small, driver specific fixes which might not even have
much impact if you have the affected devices depending on your setup"
* tag 'regulator-fix-v7.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: pf9453: Respect IRQ trigger settings from firmware
regulator: mt6363: Fix incorrect and redundant IRQ disposal in probe
Linus Torvalds [Fri, 6 Mar 2026 18:06:04 +0000 (10:06 -0800)]
Merge tag 'sound-7.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Again a collection of device-specific fixes. Most of changes are
fairly small device-specific quirks of fixes for HD- and USB-audio,
ASoC Intel, AMD, fsl, Cirrus and co.
The only large LOC is for plumbing ASoC ACP driver to add the Cirrus
Logic codec support, so this one is also just adding some tables"
* tag 'sound-7.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (21 commits)
ALSA: us122l: drop redundant interface references
ASoC: amd: yc: Add DMI quirk for ASUS EXPERTBOOK PM1503CDA
ASoC: dt-bindings: renesas,rz-ssi: Document RZ/G3L SoC
ASoC: SDCA: Add allocation failure check for Entity name
ALSA: hda/senary: Ensure EAPD is enabled during init
ALSA: hda/senary: Use codec->core.afg for GPIO access
ALSA: doc: usb-audio: Add doc for QUIRK_FLAG_SKIP_IFACE_SETUP
ASoC: dt-bindings: tegra: Add compatible for Tegra238 sound card
ALSA: hda/hdmi: Add Tegra238 HDA codec device ID
ASoC: cs35l56: Suppress pointless warning about number of GPIO pulls
ASoC: amd: acp: Add ACP6.3 match entries for Cirrus Logic parts
ASoC: Intel: sof_sdw: Add quirk for Alienware Area 51 (2025) 0CCD SKU
ASoC: rt1321: fix DMIC ch2/3 mask issue
ASoC: cs35l56: Only patch ASP registers if the DAI is part of a DAIlink
ASoC: fsl_easrc: Fix event generation in fsl_easrc_iec958_set_reg()
ASoC: fsl_easrc: Fix event generation in fsl_easrc_iec958_put_bits()
ALSA: firewire: dice: Fix printf warning with W=1
ALSA: hda/tas2781: A workaround solution to lower-vol issue among lower calibrated-impedance micro-speaker on TAS2781
ALSA: hda/realtek: Add quirk for HP Pavilion 15-eh1xxx to enable mute LED
ALSA: usb-audio: Add iface reset and delay quirk for AB13X USB Audio
...
Guenter Roeck [Thu, 5 Mar 2026 19:33:39 +0000 (11:33 -0800)]
tracing: Add NULL pointer check to trigger_data_free()
If trigger_data_alloc() fails and returns NULL, event_hist_trigger_parse()
jumps to the out_free error path. While kfree() safely handles a NULL
pointer, trigger_data_free() does not. This causes a NULL pointer
dereference in trigger_data_free() when evaluating
data->cmd_ops->set_filter.
Fix the problem by adding a NULL pointer check to trigger_data_free().
The problem was found by an experimental code review agent based on
gemini-3.1-pro while reviewing backports into v6.18.y.
Cc: Miaoqian Lin <linmq006@gmail.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Link: https://patch.msgid.link/20260305193339.2810953-1-linux@roeck-us.net Fixes: 0550069cc25f ("tracing: Properly process error handling in event_hist_trigger_parse()") Assisted-by: Gemini:gemini-3.1-pro Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Linus Torvalds [Fri, 6 Mar 2026 18:00:58 +0000 (10:00 -0800)]
Merge tag 'hid-for-linus-2026030601' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID fixes from Benjamin Tissoires:
- fix a few memory leaks (Günther Noack)
- fix potential kernel crashes in cmedia, creative-sb0540 and zydacron
(Greg Kroah-Hartman)
- fix NULL pointer dereference in pidff (Tomasz Pakuła)
- fix battery reporting for Apple Magic Trackpad 2 (Julius Lehmann)
- mcp2221 proper handling of failed read operation (Romain Sioen)
- various device quirks / device ID additions
* tag 'hid-for-linus-2026030601' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
HID: mcp2221: cancel last I2C command on read error
HID: asus: add xg mobile 2023 external hardware support
HID: multitouch: Keep latency normal on deactivate for reactivation gesture
HID: apple: Add EPOMAKER TH87 to the non-apple keyboards list
HID: intel-ish-hid: ipc: Add Nova Lake-H/S PCI device IDs
selftests: hid: tests: test_wacom_generic: add tests for display devices and opaque devices
HID: multitouch: new class MT_CLS_EGALAX_P80H84
HID: magicmouse: fix battery reporting for Apple Magic Trackpad 2
HID: pidff: Fix condition effect bit clearing
HID: Add HID_CLAIMED_INPUT guards in raw_event callbacks missing them
HID: asus: avoid memory leak in asus_report_fixup()
HID: magicmouse: avoid memory leak in magicmouse_report_fixup()
HID: apple: avoid memory leak in apple_report_fixup()
HID: Document memory allocation properties of report_fixup()
- touchscreen_dmi: Add quirk for y-inverted Goodix touchscreen on SUPI
S10
- uniwill-laptop:
- FN lock/super key lock attributes rename
- Fix crash on unexpected battery event
- A special key combination can alter FN lock status so mark it
volatile
- Handle FN lock event
* tag 'platform-drivers-x86-v7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (27 commits)
platform/x86: dell-wmi-sysman: Don't hex dump plaintext password data
platform_data/mlxreg: mlxreg.h: fix all kernel-doc warnings
platform/x86: asus-armoury: add support for FA401UM
platform/x86: asus-armoury: add support for GX650RX
platform/x86: hp-bioscfg: Support allocations of larger data
platform/x86: oxpec: Add support for Aokzoe A2 Pro
platform/x86: oxpec: Add support for OneXPlayer X1 Air
platform/x86: oxpec: Add support for OneXPlayer X1z
platform/x86: oxpec: Add support for OneXPlayer APEX
platform/x86: uniwill-laptop: Handle FN lock event
platform/x86: uniwill-laptop: Mark FN lock status as being volatile
platform/x86: uniwill-laptop: Fix crash on unexpected battery event
platform/x86: uniwill-laptop: Rename FN lock and super key lock attrs
platform/x86: redmi-wmi: Add more hotkey mappings
platform/x86: alienware-wmi-wmax: Add G-Mode support to m18 laptops
platform/x86: hp-wmi: add Omen 14-fb1xxx (board 8E41) support
platform/x86: dell-wmi: Add audio/mic mute key codes
platform/x86: hp-wmi: Add Victus 16-d0xxx support
platform/x86: intel-hid: Enable 5-button array on ThinkPad X1 Fold 16 Gen 1
platform/x86: int3472: Handle GPIO type 0x10 (DOVDD)
...
Linus Torvalds [Fri, 6 Mar 2026 17:22:51 +0000 (09:22 -0800)]
Merge tag 'slab-for-7.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab fixes from Vlastimil Babka:
- Fix for slab->stride truncation on 64k page systems due to short
type. It was not due to races and lack of barriers in the end. (Harry
Yoo)
- Fix for severe performance regression due to unnecessary sheaf refill
restrictions exposed by mempool allocation strategy. (Vlastimil
Babka)
- Stable fix for potential silent percpu sheaf flushing failures on
PREEMPT_RT. (Vlastimil Babka)
* tag 'slab-for-7.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
mm/slab: change stride type from unsigned short to unsigned int
mm/slab: allow sheaf refill if blocking is not allowed
slab: distinguish lock and trylock for sheaf_flush_main()
Linus Torvalds [Fri, 6 Mar 2026 17:16:39 +0000 (09:16 -0800)]
Merge tag 'pmdomain-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
Pull pmdomain fixes from Ulf Hansson:
- rockchip: Fix PD_VCODEC for RK3588
- bcm: Fix broken reset status read for bcm2835
* tag 'pmdomain-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm:
pmdomain: rockchip: Fix PD_VCODEC for RK3588
pmdomain: bcm: bcm2835-power: Fix broken reset status read
Linus Torvalds [Fri, 6 Mar 2026 17:10:36 +0000 (09:10 -0800)]
Require (reasonably) normal mappings for MADV_DOFORK
This came up as a result of the tracing fix pull request, and commit e39bb9e02b68 ("tracing: Fix WARN_ON in tracing_buffers_mmap_close") in
particular.
The use of MADV_DOFORK confused the ring buffer mapping reference
counting just because it was unexpected, since the mapping was
originally done with VM_DONTCOPY.
The tracing code may well be the only case of this (and fixed it all by
just using the mmap open callback to unconfuse itself), but it's just
strange that we allow MADV_DOFORK on special mappings where the kernel
has set the "don't copy this" bit.
The code already disallowed it for VM_IO mappings (going back to the
original commit f822566165dd: "madvise MADV_DONTFORK/MADV_DOFORK"), so
just extend it to any of the VM_SPECIAL cases (which includes
VM_DONTEXPAND | VM_PFNMAP | VM_MIXEDMAP in addition to VM_IO).
We could also allow MADV_DOFORK only on mappings that had been marked
DONTFORK by the user. But that would require us to track that
(presumably with another VM_xyz bit), so let's just do this trivial and
straightforward modifications.
If anybody notices, Lorenzo will be boarding Flying Pig Airlines.
Suggested-by: David Hildenbrand (Arm) <david@kernel.org> Reviewed-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org> Link: https://lore.kernel.org/all/a8907468-d7e9-4727-af28-66d905093230@kernel.org/ Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Jason Gunthorpe <jgg@ziepe.ca> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 6 Mar 2026 16:44:20 +0000 (08:44 -0800)]
Merge tag 'v7.0-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
- Fix use-after-free in ccp
- Fix bug when SEV is disabled in ccp
- Fix tfm_count leak in atmel-sha204a
* tag 'v7.0-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: atmel-sha204a - Fix OOM ->tfm_count leak
crypto: ccp - Fix use-after-free on error path
crypto: ccp - allow callers to use HV-Fixed page API when SEV is disabled
Linus Torvalds [Fri, 6 Mar 2026 16:41:20 +0000 (08:41 -0800)]
Merge tag 'ata-7.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ata fixes from Niklas Cassel:
- Fix a problem where the deferred non-NCQ command would incorrectly
get completed as a failed command, if there was another command that
timed out. Found by Gemini (Guenter)
- The deferred non-NCQ command work is only supposed to run after the
last NCQ command finishes. However, because the work was never
canceled on error (e.g. a timeout), the work could incorrectly run
when commands were still in flight. Found by syzbot (me)
- Add a quirk to make sure that QEMU harddrives can potentially use up
to 32 MiB I/Os (Pedro)
- Add a quirk to disable LPM on Seagate ST1000DM010-2EP102 (Maximilian)
* tag 'ata-7.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
ata: libata-eh: Fix detection of deferred qc timeouts
ata: libata-core: Add BRIDGE_OK quirk for QEMU drives
ata: libata: cancel pending work after clearing deferred_qc
ata: libata-core: Disable LPM on ST1000DM010-2EP102
Linus Torvalds [Fri, 6 Mar 2026 16:36:18 +0000 (08:36 -0800)]
Merge tag 'block-7.0-20260305' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:
- NVMe pull request via Keith:
- Improve quirk visibility and configurability (Maurizio)
- Fix runtime user modification to queue setup (Keith)
- Fix multipath leak on try_module_get failure (Keith)
- Ignore ambiguous spec definitions for better atomics support
(John)
- Fix admin queue leak on controller reset (Ming)
- Fix large allocation in persistent reservation read keys
(Sungwoo Kim)
- Fix fcloop callback handling (Justin)
- Securely free DHCHAP secrets (Daniel)
- Various cleanups and typo fixes (John, Wilfred)
- Avoid a circular lock dependency issue in the sysfs nr_requests or
scheduler store handling
- Fix a circular lock dependency with the pcpu mutex and the queue
freeze lock
- Cleanup for bio_copy_kern(), using __bio_add_page() rather than the
bio_add_page(), as adding a page here cannot fail. The exiting code
had broken cleanup for the error condition, so make it clear that the
error condition cannot happen
- Fix for a __this_cpu_read() in preemptible context splat
* tag 'block-7.0-20260305' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
block: use trylock to avoid lockdep circular dependency in sysfs
nvme: fix memory allocation in nvme_pr_read_keys()
block: use __bio_add_page in bio_copy_kern
block: break pcpu_alloc_mutex dependency on freeze_lock
blktrace: fix __this_cpu_read/write in preemptible context
nvme-multipath: fix leak on try_module_get failure
nvmet-fcloop: Check remoteport port_state before calling done callback
nvme-pci: do not try to add queue maps at runtime
nvme-pci: cap queue creation to used queues
nvme-pci: ensure we're polling a polled queue
nvme: fix memory leak in quirks_param_set()
nvme: correct comment about nvme_ns_remove()
nvme: stop setting namespace gendisk device driver data
nvme: add support for dynamic quirk configuration via module parameter
nvme: fix admin queue leak on controller reset
nvme-fabrics: use kfree_sensitive() for DHCHAP secrets
nvme: stop using AWUPF
nvme: expose active quirks in sysfs
nvme/host: fixup some typos
Linus Torvalds [Fri, 6 Mar 2026 16:31:36 +0000 (08:31 -0800)]
Merge tag 'io_uring-7.0-20260305' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring fixes from Jens Axboe:
- Fix a typo in the mock_file help text
- Fix a comment regarding IORING_SETUP_TASKRUN_FLAG in the
io_uring.h UAPI header
- Use READ_ONCE() for reading refill queue entries
- Reject SEND_VECTORIZED for fixed buffer sends, as it isn't
implemented. Currently this flag is silently ignored
This is in preparation for making these work, but first we
need a fixup so that older kernels will correctly reject them
- Ensure "0" means default for the rx page size
* tag 'io_uring-7.0-20260305' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
io_uring/zcrx: use READ_ONCE with user shared RQEs
io_uring/mock: Fix typo in help text
io_uring/net: reject SEND_VECTORIZED when unsupported
io_uring: correct comment for IORING_SETUP_TASKRUN_FLAG
io_uring/zcrx: don't set rx_page_size when not requested
kthread_exit became a macro to do_exit in commit 28aaa9c39945
("kthread: consolidate kthread exit paths to prevent use-after-free"),
so there is no kthread_exit function BTF ID to resolve. Remove it from
noreturn_deny to avoid resolve_btfids unresolved symbol warnings.
Signed-off-by: Christian Loehle <christian.loehle@arm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Yifan Wu [Thu, 5 Mar 2026 01:36:37 +0000 (09:36 +0800)]
selftest/arm64: Fix sve2p1_sigill() to hwcap test
The FEAT_SVE2p1 is indicated by ID_AA64ZFR0_EL1.SVEver. However,
the BFADD requires the FEAT_SVE_B16B16, which is indicated by
ID_AA64ZFR0_EL1.B16B16. This could cause the test to incorrectly
fail on a CPU that supports FEAT_SVE2.1 but not FEAT_SVE_B16B16.
LD1Q Gather load quadwords which is decoded from SVE encodings and
implied by FEAT_SVE2p1.
Fixes: c5195b027d29 ("kselftest/arm64: Add SVE 2.1 to hwcap test") Signed-off-by: Yifan Wu <wuyifan50@huawei.com> Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: Will Deacon <will@kernel.org>
arm64: contpte: fix set_access_flags() no-op check for SMMU/ATS faults
contpte_ptep_set_access_flags() compared the gathered ptep_get() value
against the requested entry to detect no-ops. ptep_get() ORs AF/dirty
from all sub-PTEs in the CONT block, so a dirty sibling can make the
target appear already-dirty. When the gathered value matches entry, the
function returns 0 even though the target sub-PTE still has PTE_RDONLY
set in hardware.
For a CPU with FEAT_HAFDBS this gathered view is fine, since hardware may
set AF/dirty on any sub-PTE and CPU TLB behavior is effectively gathered
across the CONT range. But page-table walkers that evaluate each
descriptor individually (e.g. a CPU without DBM support, or an SMMU
without HTTU, or with HA/HD disabled in CD.TCR) can keep faulting on the
unchanged target sub-PTE, causing an infinite fault loop.
Gathering can therefore cause false no-ops when only a sibling has been
updated:
- write faults: target still has PTE_RDONLY (needs PTE_RDONLY cleared)
- read faults: target still lacks PTE_AF
Fix by checking each sub-PTE against the requested AF/dirty/write state
(the same bits consumed by __ptep_set_access_flags()), using raw
per-PTE values rather than the gathered ptep_get() view, before
returning no-op. Keep using the raw target PTE for the write-bit unfold
decision.
Per Arm ARM (DDI 0487) D8.7.1 ("The Contiguous bit"), any sub-PTE in a CONT
range may become the effective cached translation and software must
maintain consistent attributes across the range.
Fixes: 4602e5757bcc ("arm64/mm: wire up PTE_CONT for user mappings") Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Zi Yan <ziy@nvidia.com> Cc: Breno Leitao <leitao@debian.org> Cc: stable@vger.kernel.org Reviewed-by: Alistair Popple <apopple@nvidia.com> Reviewed-by: James Houghton <jthoughton@google.com> Reviewed-by: Ryan Roberts <ryan.roberts@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Tested-by: Breno Leitao <leitao@debian.org> Signed-off-by: Piotr Jaroszynski <pjaroszynski@nvidia.com> Acked-by: Balbir Singh <balbirs@nvidia.com> Signed-off-by: Will Deacon <will@kernel.org>
Helge Deller [Wed, 4 Mar 2026 21:24:18 +0000 (22:24 +0100)]
parisc: Fix initial page table creation for boot
The KERNEL_INITIAL_ORDER value defines the initial size (usually 32 or
64 MB) of the page table during bootup. Up until now the whole area was
initialized with PTE entries, but there was no check if we filled too
many entries. Change the code to fill up with so many entries that the
"_end" symbol can be reached by the kernel, but not more entries than
actually fit into the initial PTE tables.
Helge Deller [Tue, 3 Mar 2026 22:36:11 +0000 (23:36 +0100)]
parisc: Check kernel mapping earlier at bootup
The check if the initial mapping is sufficient needs to happen much
earlier during bootup. Move this test directly to the start_parisc()
function and use native PDC iodc functions to print the warning, because
panic() and printk() are not functional yet.
This fixes boot when enabling various KALLSYSMS options which need
much more space.
Dave Airlie [Fri, 6 Mar 2026 09:40:23 +0000 (19:40 +1000)]
Merge tag 'drm-misc-fixes-2026-03-06' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes
Another early drm-misc-fixes PR to revert the previous uapi fix sent in
drm-misc-fixes-2026-03-05, together with a UAF fix in TTM, an argument
order fix for panthor, a fix for the firmware getting stuck on
resource allocation error handling for amdxdna, and a few fixes for
ethosu (size calculation and reference underflows, and a validation
fix).
Dave Airlie [Fri, 6 Mar 2026 07:45:47 +0000 (17:45 +1000)]
Merge tag 'drm-misc-fixes-2026-03-05' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes
A return type fix for ttm, a display fix for solomon, several misc fixes
for amdxdna, a DSI clock rate fix for rz-du, a uapi fix for syncobj, a
possible build failure fix for dma-buf, a doc warning fix for sched, a
build failure fix for ttm tests, and a crash fix when suspended for
nouveau.
Guenter Roeck [Fri, 6 Mar 2026 02:48:05 +0000 (18:48 -0800)]
ata: libata-eh: Fix detection of deferred qc timeouts
If the ata_qc_for_each_raw() loop finishes without finding a matching SCSI
command for any QC, the variable qc will hold a pointer to the last element
examined, which has the tag i == ATA_MAX_QUEUE - 1. This qc can match the
port deferred QC (ap->deferred_qc).
If that happens, the condition qc == ap->deferred_qc evaluates to true
despite the loop not breaking with a match on the SCSI command for this QC.
In that case, the error handler mistakenly intercepts a command that has
not been issued yet and that has not timed out, and thus erroneously
returning a timeout error.
Fix the problem by checking for i < ATA_MAX_QUEUE in addition to
qc == ap->deferred_qc.
The problem was found by an experimental code review agent based on
gemini-3.1-pro while reviewing backports into v6.18.y.
Assisted-by: Gemini:gemini-3.1-pro Fixes: eddb98ad9364 ("ata: libata-eh: correctly handle deferred qc timeouts") Signed-off-by: Guenter Roeck <linux@roeck-us.net>
[cassel: modified commit log as suggested by Damien] Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Signed-off-by: Niklas Cassel <cassel@kernel.org>
Paulo Alcantara [Fri, 6 Mar 2026 00:57:06 +0000 (21:57 -0300)]
smb: client: fix oops due to uninitialised var in smb2_unlink()
If SMB2_open_init() or SMB2_close_init() fails (e.g. reconnect), the
iovs set @rqst will be left uninitialised, hence calling
SMB2_open_free(), SMB2_close_free() or smb2_set_related() on them will
oops.
Fix this by initialising @close_iov and @open_iov before setting them
in @rqst.
Reported-by: Thiago Becker <tbecker@redhat.com> Fixes: 1cf9f2a6a544 ("smb: client: handle unlink(2) of files open by different clients") Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> Cc: David Howells <dhowells@redhat.com> Cc: linux-cifs@vger.kernel.org Cc: stable@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com>
accel: ethosu: Handle possible underflow in IFM size calculations
If the command stream has larger padding sizes than the IFM and OFM
diminsions, then the calculations will underflow to a negative value.
The result is a very large region bounds which is caught on submit, but
it's better to catch it earlier.
Current mesa ethosu driver has a signedness bug which resulted in
padding of 127 (the max) and triggers this issue.
accel: ethosu: Fix NPU_OP_ELEMENTWISE validation with scalar
The NPU_OP_ELEMENTWISE instruction uses a scalar value for IFM2 if the
IFM2_BROADCAST "scalar" mode is set. It is a bit (7) on the u65 and
part of a field (bits 3:0) on the u85. The driver was hardcoded to the
u85.
If the job submit fails before adding the job to the scheduler queue
such as when the GEM buffer bounds checks fail, then doing a
ethosu_job_put() results in a pm_runtime_put_autosuspend() without the
corresponding pm_runtime_resume_and_get(). The dma_fence_put()'s are
also unnecessary, but seem to be harmless.
Split the ethosu_job_cleanup() function into 2 parts for the before
and after the job is queued.
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