LOLLM complains that xfs_healthmon_unmount does an unlocked insert of
the unmount event into the health monitor's event list. Fix that.
Cc: stable@vger.kernel.org # v7.0
Fixes: 25ca57fa36 ("xfs: convey filesystem unmount events to the health monitor")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Assisted-by: LOLLM # finding obvious bugs
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
A longstanding weakness of the metapath repair code is that it can only
reattach non-directories to the metadata directory tree. Let's fix
that by allowing reconnection of subdirectories.
Note that with the initial users of metadir (rtgroups and quota),
there's no way to mount a filesystem with broken /rtgroups or /quota
subdirectories, so this code won't be all that useful until something
adds deeper directory trees. But we shouldn't leave a logic bomb for
those futures users wherein we get the link count wrong for a subdir.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
LOLLM notices that xrep_metapath_unlink looks for a parent pointer in
the child metafile that it's removing, but initializes the parent handle
using the child. This is obviously incorrect, so fix that.
Cc: stable@vger.kernel.org # v6.13
Fixes: 0d2c636e48 ("xfs: repair metadata directory file path connectivity")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Assisted-by: LOLLM # finding obvious bugs
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
LOLLM points out that xrep_symlink_swap_prep converts sc->tempip to an
extents format file prior to the atomic swap, but incorrectly logs
sc->ip immediately afterwards. Fix that, and the other problem that
we're supposed to tell xfs_trans_log_inode what to log and don't.
Cc: stable@vger.kernel.org # v6.10
Fixes: 2651923d8d ("xfs: online repair of symbolic links")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Assisted-by: LOLLM # finding obvious bugs
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
LOLLM notices that the behavior of xrep_dir_replay_update changes based
on the ftype recorded in the stashed removename information. It also
notices that the unlink iops sometimes set that ftype to FT_UNKNOWN
because the regular directory tree update code paths don't need to know
the ftype of the child.
Unfortunately, this results in incorrect link counts, which eventually
trips link count errors in later phases of xfs_scrub, or in xfs_repair.
Fix this by creating a second xfs_name with the type set correctly.
Cc: stable@vger.kernel.org # v6.10
Fixes: 8559b21a64 ("xfs: implement live updates for directory repairs")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Assisted-by: LOLLM # finding obvious bugs
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
LOLLM noticed that xrep_dir_recover_data can spin forever if it
encounters an unused dirent that claims to have length zero. Fix that,
and prevent the same thing from happening with a zero-length entry.
Cc: stable@vger.kernel.org # v6.10
Fixes: b1991ee3e7 ("xfs: online repair of directories")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Assisted-by: LOLLM # finding obvious bugs
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
xfs_da_grow_inode_int() subtracts the blocks it just allocated from
args->total, the caller's remaining block reservation. The subtraction
is unsigned, so a caller that reaches it with too small a total wraps
the field instead of failing, and every allocation afterwards runs with
a bogus reservation. Assert the remaining reservation still covers the
step, so an under-reserved or uninitialised total trips in debug builds
instead of silently wrapping.
Suggested-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Javier Tia <floss@jetm.me>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
xfs_parent_da_args_init() builds an xfs_da_args from a zeroed
xfs_parent_args (kmem_cache_zalloc), leaving args->total == 0.
xfs_da_grow_inode_int() treats that field as a running block reservation
and subtracts from it; because it is an xfs_extlen_t (uint32_t), the
first attr-fork growth wraps it to ~0U. That defeats the free-space
check in xfs_alloc_space_available(), and when it coincides with an AG
that has exactly zero available blocks the allocation is clamped to
maxlen 0 and returns -ENOSPC, which xfs_defer_finish_noroll() escalates
to a filesystem shutdown.
Set args->total the way the log recovery path does
(xfs_attri_recover_work(), xfs_attr_item.c:706), in the add and replace
paths that can grow the fork. Removals and lookups never grow it, so
they leave the field alone, matching that switch.
Fixes: b7c62d90c1 ("xfs: parent pointer attribute creation")
Cc: stable@vger.kernel.org # v6.10
Signed-off-by: Javier Tia <floss@jetm.me>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
The comment on xfs_parent_calc_space_res() claims parent pointers are
"always the first attr in an attr tree". They are not: a parent pointer
is recorded per dirent, so by the Nth hardlink the attr fork is already
in leaf or node format. The reservation is still correct, because
XFS_DAENTER_SPACE_RES() covers a split at every level of a maximum-depth
attr dabtree whatever format the fork is in, but anyone auditing a
shortfall here is led by the comment to look for a bug that is not
there.
Rewrite the comment to state what actually bounds the result, and record
why the double split allowance and the extent-add term differ from
xfs_attr_calc_size().
Signed-off-by: Javier Tia <floss@jetm.me>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
When a deferred operation fails and shuts the filesystem down,
xfs_defer_finish_noroll() reports neither the errno nor which operation
originated it, so the log cannot tell a transient -ENOSPC from real
corruption. Report the operation type, errno and remaining reservation.
trace_xfs_defer_finish_error() runs after xfs_force_shutdown(), which
BUGs under fs.xfs.panic_mask and so never fires for the first failure;
move it ahead of the shutdown and mirror it to xfs_alert() for systems
without tracing armed. Capture the op name while the item is live (dfp
is freed once its work list drains) and suppress the alert once the fs is
already down.
Signed-off-by: Javier Tia <floss@jetm.me>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
xfs_barrier_defer_type is the only xfs_defer_op_type with no .name.
Every other one carries a short string used for tracing and reporting:
attr, bmap, extent_free, agfl_free, rtextent_free, refcount,
rtrefcount, rmap, rtrmap and exchmaps.
That has been harmless because nothing dereferences the field, but it
leaves a NULL in a table where every other entry is populated, so the
first caller to print it gets "(null)" in the kernel and undefined
behaviour in the userspace libxfs build of this file, where xfs_alert
lands in fprintf. xfs_defer_add() already treats a missing member of
this table as worth shutting the filesystem down for, so an unpopulated
one is out of step with how the file handles its own ops tables.
Signed-off-by: Javier Tia <floss@jetm.me>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
xfs_defer_finish_one() declares error without an initialiser and only
assigns it inside the loop over dfp->dfp_work. When that list is empty
the loop body never runs, control falls through to the "Done with the
dfp, free it" path, and the function returns an indeterminate value.
An item-less pending item reaches this through xfs_defer_add_barrier(),
which xfs_reap_ag_blocks() uses on any CONFIG_XFS_ONLINE_REPAIR kernel.
xfs_defer_finish_noroll() treats any non-EAGAIN return as fatal, so a
non-zero stack value turns a successful barrier into a
SHUTDOWN_CORRUPT_INCORE in the middle of a repair. Zero is the correct
result: reaching the free path means the item loop drained without a
non-zero error.
Fixes: 3f3cec0310 ("xfs: force small EFIs for reaping btree extents")
Cc: stable@vger.kernel.org
Signed-off-by: Javier Tia <floss@jetm.me>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Pass up the __must_hold as clang requires it, and also fix the formatting
of the __must_hold on xfs_ail_check to match how we do it elsewhere.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
This is required to make the clang context analysis happy, which is
more strict than the old sparse lock context tracking.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Sparse used to get away without these despite dropping and reacquiring
l_icloglock
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Improve the __acquires and __releases annotations so that the new
clang code that is a bit more picky than sparse is happy.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Improve the __acquires and __releases annotations so that the new
clang code that is a bit more picky than sparse is happy. This involves
passing an explicit struct xlog argument in a few places because
alias analysis can't figure out it is the same lock when dereferencing
changing iclogs.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Name the actual lock. Unlike sparse, clang wants the annotation to
be correct.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Name the correct lock.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
The newer clang context analysis requires __releases_shared for the RCU
pseudo-lock.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
When exchanging two full-file ranges, xmi_can_exchange_reflink_flags()
can move the reflink inode flag from the file that currently has it to
the other file, as long as exactly one side is marked. This assumes
that the file contents, and therefore all shared extents, are exchanged.
That assumption is not true when XFS_EXCHMAPS_INO1_WRITTEN is set.
xfs_exchmaps_can_skip_mapping() can skip hole and unwritten mappings
from file1, so an exchange can complete without moving every mapping
that the earlier flag-swap decision accounted for. In that case the
post-operation cleanup can clear the reflink flag from an inode that
still owns shared written extents. Later writes then take the
non-reflink write path and may update blocks that should still have
been protected by CoW, which shows up as data corruption between
reflink-related files.
Fix this by disabling the reflink flag exchange whenever
XFS_EXCHMAPS_INO1_WRITTEN is requested. The contents exchange can still
proceed; the conservative outcome is that both inodes keep the reflink
flag. The regular reflink flag cleanup path can drop the extra flag
later once the inode no longer has shared extents.
Reported-by: Lin Jiapeng (TencentOS Red Team) <jiapenglin@tencent.com>
Fixes: 966ceafc7a ("xfs: create deferred log items for file mapping exchanges")
Cc: stable@vger.kernel.org # v6.10
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Lin Jiapeng <jiapenglin@tencent.com>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
xfs_zoned_add_available() checks whether the reservation list is empty
before adding blocks to the available-space counter. This check is not
serialized against a task adding itself to the reservation list however.
This allows the space provider to observe an empty list, after which a
reserver can enqueue itself and retry the counter before the new space is
added. The provider then adds the space and returns without waking the
now-eligible reserver, leaving it asleep until GC or another event
provides a wakeup, potentially adding seconds to max write latency.
Take the reservation lock before updating the counter and checking the
list. Use list_empty() because the list is now inspected under its lock.
Taking a per-mount lock when handing back space is far from ideal, but
benchmarking with null_blk showed no measurable performance regression.
Fixes: 0bb2193056 ("xfs: add support for zoned space reservations")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/patchset/20260609075655.1698743-1-hch@lst.de?part=2
Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
A media scan of a filesystem containing an internal rt volume produced
an error in xfs_scrub phase 6 complaining about a truncated realtime
device. The rt device wasn't truncated, but the media scan code thought
we were trying to start a scan past the end of m_rtdev_targp. That in
turn is an alias for m_ddev_targp, but in xfs_configure_buftarg we set
nr_sectors to the size of the data section. We don't account for an
internal realtime section, so the kernel doesn't scan any part of it.
Oops.
Reproducer:
# mkfs.xfs -f /dev/sda -r zoned=1 -d rtinherit=1
# mount /dev/sda /mnt
# dd if=/dev/zero of=/mnt/a bs=1024k count=100
# sync
# xfs_info /mnt
meta-data=/dev/sda isize=512 agcount=4, agsize=32768 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=1, rmapbt=1
= reflink=0 bigtime=1 inobtcount=1 nrext64=1
= exchange=1 metadir=1
data = bsize=4096 blocks=131072, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0, ftype=1, parent=1
log =internal log bsize=4096 blocks=16384, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =internal extsz=4096 blocks=1114112, rtextents=1114112
= rgcount=17 rgsize=65536 extents
= zoned=1 start=131072 reserved=53248
IOWS: 512M data volume, 3.1G internal rt section. Now let's try some
media verification:
# xfs_io -c 'verifymedia -d' -c 'verifymedia -r' /mnt
verified 536870912/536870912 bytes at offset 0
512 MiB, 1 ops; 0.0496 sec (10.067 GiB/sec and 20.1345 ops/sec)
verified 536870912/536870912 bytes at offset 0
512 MiB, 1 ops; 0.0409 sec (12.222 GiB/sec and 24.4439 ops/sec)
Notice how xfs_io says we only verified 512M of the rt volume? If you
run btrace in the background you'll see that we read the first 512M of
the volume (aka the data section) twice and never read anything from the
rt section.
An earlier fix tried messing with the buftarg geometry, but I've decided
on a more targetted fix for the media verification code. All we have to
do is calculate the starting and ending daddr for the device that we're
verifying, and clamp the user's input values to that range. This leads
to some bogosity in the output reporting:
# xfs_io -c 'verifymedia -d' -c 'verifymedia -r' /mnt/t
verified 536870912/536870912 bytes at offset 0
512 MiB, 1 ops; 0.0606 sec (8.248 GiB/sec and 16.4968 ops/sec)
verified 5100273664/5100273664 bytes at offset 0
4.750 GiB, 1 ops; 0.3329 sec (14.267 GiB/sec and 3.0035 ops/sec)
Because we don't have a way to report that we didn't really do anything
at all for that first 512M of address space of the rt "device". But at
least we're no longer ignoring real media.
(Note that the fsmap/bmap/fiemap calls all report physical addresses for
the internal rt volume as offsets from the start of the data device, and
the media verifier call consumes the same. We baked that into the
user-visible behavior in 6.15, so we're stuck with that sparse hole at
the beginning.)
Cc: stable@vger.kernel.org # v6.15
Fixes: bdc03eb5f9 ("xfs: allow internal RT devices for zoned mode")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
- Fix several tracefs files that did not take the trace_array reference
A trace instance can be created and destroyed in the tracefs "instances"
directory via mkdir and rmdir respectively. The instance is represented by
a trace_array descriptor. Most tracefs files pass the trace_array as the
private data of the inode to the open/read/write functions. Since there is
no locking between the time a task opens a file and the deletion of the
instance (and the freeing of the trace_array), each open needs to get a
reference to the trace_array and each close must remove it. A instance
can't be removed if there's any reference taken on its trace_array. The
open function uses trace_array_get() that takes a lock (preventing removal
of instances) and iterates the list of all existing trace_arrays and if it
finds a match, it takes the reference and releases the lock. If it doesn't
find a match, it causes the open to return -ENODEV.
There were some added files that did not take the trace_array reference
on open that needed to be fixed. Sashiko also correctly pointed out that
there were some files that took an address of an field or element of the
trace_array which had a pointer back to the trace_array to take its
reference on open. But this leaves a slight race between referencing this
element to get the trace_array as the element itself could be freed. To
solve this, some helper functions were created to look for trace_arrays
with this field or element in the search so that the element did not have
to be dereferenced before the trace_array's reference was taken.
- Add a lock around ftrace_ops initialization
When a ftrace_ops is first used by ftrace, some internal initialization is
performed on the ops. But if multiple tasks were calling functions that
did this initialization, it could race and perform doing the
initialization more than once, corrupting the internal data. Add a lock in
the initialization code to prevent this from happening.
- Fix splice reads on mmapped buffers
The logic in the ring buffer splice code for mmapped buffers is supposed
to do a copy of the memory as the mapped buffers can't be given to splice.
But there was an if statement within the copy code that would return a -1
if a request for a full page was done and it wasn't a partial read. This
is because this logic was written before mmapped buffers existed and this
case didn't make sense at the time. For mmapped buffers it makes perfect
sense and by returning early can drop a lot of pages unnecessarily.
- Have the persistent ring buffer validation check nr_subbufs
Sashiko reported that the validation code was relying on the saved
nr_subbufs to match the calculated nr_pages + 1 and if they were off, that
the code could cause corruption. Sashiko is correct, and the saved
nr_subbufs should be validated before assuming it is correct.
- Do not allow more than one instance with the same name on cmdline
If an admin were to add more than one trace instances with the same name
they all would be created, but only the first one would be accessible via
tracefs. This used to not be allowed but some restructuring of code has
since made it possible.
- Fix the race between subbuf resize and trace_pipe_raw readers
If a task was reading trace_pipe_raw while another task was changing the
ring buffer subbuf size, it could crash the reader. The trace_pipe_raw
readers do get their own copy of the page from the buffer, but the code
needs some restructuring to not have the resize of the subbuffers cause
issues.
- Cap the size of the mapped (static) ring buffer nr_pages
The meta data used for ring buffer mapped buffers is 32 bit in size. A
normal ring buffer could (in theory) have more than 4 billion pages.
But this is not allowed by mapped buffers, so enforce it.
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Merge tag 'trace-v7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
- Fix several tracefs files that did not take the trace_array reference
A trace instance can be created and destroyed in the tracefs
"instances" directory via mkdir and rmdir respectively. The instance
is represented by a trace_array descriptor.
Most tracefs files pass the trace_array as the private data of the
inode to the open/read/write functions. Since there is no locking
between the time a task opens a file and the deletion of the instance
(and the freeing of the trace_array), each open needs to get a
reference to the trace_array and each close must remove it.
An instance can't be removed if there's any reference taken on its
trace_array. The open function uses trace_array_get() that takes a
lock (preventing removal of instances) and iterates the list of all
existing trace_arrays and if it finds a match, it takes the reference
and releases the lock. If it doesn't find a match, it causes the open
to return -ENODEV.
There were some added files that did not take the trace_array
reference on open that needed to be fixed. Sashiko also correctly
pointed out that there were some files that took an address of an
field or element of the trace_array which had a pointer back to the
trace_array to take its reference on open. But this leaves a slight
race between referencing this element to get the trace_array as the
element itself could be freed. To solve this, some helper functions
were created to look for trace_arrays with this field or element in
the search so that the element did not have to be dereferenced before
the trace_array's reference was taken.
- Add a lock around ftrace_ops initialization
When a ftrace_ops is first used by ftrace, some internal
initialization is performed on the ops. But if multiple tasks were
calling functions that did this initialization, it could race and
perform doing the initialization more than once, corrupting the
internal data. Add a lock in the initialization code to prevent this
from happening.
- Fix splice reads on mmapped buffers
The logic in the ring buffer splice code for mmapped buffers is
supposed to do a copy of the memory as the mapped buffers can't be
given to splice. But there was an if statement within the copy code
that would return a -1 if a request for a full page was done and it
wasn't a partial read. This is because this logic was written before
mmapped buffers existed and this case didn't make sense at the time.
For mmapped buffers it makes perfect sense and by returning early can
drop a lot of pages unnecessarily.
- Have the persistent ring buffer validation check nr_subbufs
Sashiko reported that the validation code was relying on the saved
nr_subbufs to match the calculated nr_pages + 1 and if they were off,
that the code could cause corruption. Sashiko is correct, and the
saved nr_subbufs should be validated before assuming it is correct.
- Do not allow more than one instance with the same name on cmdline
If an admin were to add more than one trace instances with the same
name they all would be created, but only the first one would be
accessible via tracefs. This used to not be allowed but some
restructuring of code has since made it possible.
- Fix the race between subbuf resize and trace_pipe_raw readers
If a task was reading trace_pipe_raw while another task was changing
the ring buffer subbuf size, it could crash the reader. The
trace_pipe_raw readers do get their own copy of the page from the
buffer, but the code needs some restructuring to not have the resize
of the subbuffers cause issues.
- Cap the size of the mapped (static) ring buffer nr_pages
The meta data used for ring buffer mapped buffers is 32 bit in size.
A normal ring buffer could (in theory) have more than 4 billion
pages. But this is not allowed by mapped buffers, so enforce it.
* tag 'trace-v7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
ring-buffer: Use a macro for static buffer bits
tracing: Fix comment in tracing_buffers_splice_read()
ring-buffer: Prevent truncation of nr_pages / nr_subbufs
ring-buffer: Cap static ring buffer nr_pages
tracing: Fix subbuf resize races with trace_pipe_raw readers
tracing: Fix to avoid creating trace instances with duplicate names
ring-buffer: Add checking nr_subbufs to persistent ring buffer validation
ring-buffer: Allow splice reads on static buffers
tracing: Take trace_array reference when opening options file
ftrace: Synchronize the initialization of ftrace_ops
ftrace: Take trace_array reference before accessing its ftrace_ops
tracing: Have show_event_filters/triggers files take trace array ref
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Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Pull bpf fixes from Alexei Starovoitov:
"This mainly contains verifier fixes that address bugs reported by
Nicholas Carlini.
- Fix incorrect non-NULL inference in pointer comparisons: pointer
types that may be NULL at runtime, pointers with unbounded offsets,
JMP32 comparisons with zero, and imprecise zero registers (Eduard
Zingerman)
- Fix precision tracking for half-dead zero spills, ld_abs/ld_ind
implicit subprog exit, bpf_loop() callbacks, linked scalar ids and
NULL call arguments (Eduard Zingerman)
- Reject BPF_PSEUDO_FUNC reference to the main program, fix zero
extension of arena 32-bit cmpxchg, don't rewrite bpf_fastcall
patterns entered by a jump (Eduard Zingerman)
- Fix percpu map update and BPF_F_CPU validation with sparse CPU IDs
(Hui Su)
- Fix NULL-ptr-derefs in bpf_snprintf_btf() for void and VAR types,
and reject key-less BTF for hash maps (Jiayuan Chen)
- Various fixes (Kumar Kartikeya Dwivedi):
- Fix out-of-bounds access in disassembler on invalid LDSX
instruction
- mark siginfo of signal tracepoints as scalar and
sched_process_wait argument as nullable
- mark faultable stack helpers as sleepable
- reject tail calls and legacy packet loads from callbacks
- enforce rbtree callback lock restrictions for resilient locks
- require MEM_PERCPU for percpu kptr stores
- clear NON_OWN_REF after RCU protection ends
- mark NULL kptr stores precise
- preserve inner map identity in callback frames
- reject non-scalar bpf_loop() iteration counts
- Fix trampoline allocation slowdown on x86 by using
EXECMEM_MODULE_DATA (Mike Rapoport)
- Keep bpf_refcount_acquire() nullable for borrowed RCU kptrs and
reject untrusted allocated-object pointers (Ning Ding)
- Fix special fields handling in recycled rhtab elements (Nuoqi Gui,
Yuan Chen)"
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: (86 commits)
bpf, riscv: Make arena support depend on ZACAS
selftests/bpf: Test pointer bpf_loop iteration count rejection
bpf: Reject non-scalar bpf_loop iteration counts
bpf: use mark_arg_precision() in check_mem_size_reg()
bpf: propagate mark_chain_precision() errors out of loop_flag_is_zero()
selftests/bpf: precision of a NULL global subprogram BTF_ID argument
bpf: mark a NULL BTF_ID argument of a global subprogram precise
selftests/bpf: precision of a NULL kfunc argument
bpf: mark a NULL kfunc argument precise
selftests/bpf: precision of a NULL global subprogram memory argument
bpf: mark a NULL memory argument of a call precise
selftests/bpf: precision of a NULL helper argument
bpf: mark a NULL call argument precise
selftests/bpf: Test inner map identities in callbacks
bpf: Preserve inner map identity in callback frames
selftests/bpf: Test imprecise scalar kptr stores
bpf: Mark NULL kptr stores precise
selftests/bpf: Test rhtab kptr cancellation semantics
bpf: Cancel special fields when recycling rhtab elements
selftests/bpf: Test timer field on recycled rhtab element
...
- Fix a timestamping bug in pick_task_fair() and
yield_task_fair() (Zhan Xusheng)
- Skip migrate-disabled tasks when picking a push
candidate in the RT and DL schedulers (Seiji Nishikawa)
- Skip rq->avg_idle update without a valid idle_stamp
(Shubhang Kaushik)
- Fix throttling bug in throttle_cfs_rq(), caused
by the recent single-runqueue conversion (Wanwu Li)
- Fix bandwidth calculation bug in distribute_cfs_runtime(),
caused by the single-runqueue conversion (Wanwu Li)
- Don't make x86 ITMT enablement depend on debugfs (Mario Limonciello)
- Avoid creating misfits during cache-aware load-balancing
on hybrid systems (Tim Chen)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2026-09-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
- Fix a timestamping bug in pick_task_fair() and yield_task_fair()
(Zhan Xusheng)
- Skip migrate-disabled tasks when picking a push candidate in the
RT and DL schedulers (Seiji Nishikawa)
- Skip rq->avg_idle update without a valid idle_stamp (Shubhang
Kaushik)
- Fix throttling bug in throttle_cfs_rq(), caused by the recent
single-runqueue conversion (Wanwu Li)
- Fix bandwidth calculation bug in distribute_cfs_runtime(),
caused by the single-runqueue conversion (Wanwu Li)
- Don't make x86 ITMT enablement depend on debugfs (Mario Limonciello)
- Avoid creating misfits during cache-aware load-balancing on hybrid
systems (Tim Chen)
* tag 'sched-urgent-2026-09-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Avoid creating misfits during cache-aware balancing
x86/itmt: Don't make ITMT enablement depend on debugfs
sched/fair: Use cfs_rq->h_curr in distribute_cfs_runtime()
sched/fair: Use cfs_rq->h_curr in throttle_cfs_rq()
sched/core: Skip rq->avg_idle update without a valid idle_stamp
sched/rt,dl: Skip migrate-disabled tasks when picking a push candidate
sched/fair: Use update_curr_eevdf() for the remaining root cfs_rq callers
- Skip empty AUX records with only format flags
(Leo Yan)
- Fix use-after-free when perf mmap() revival races with the
last munmap() (Yilin Zhang, Weiming Shi)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-urgent-2026-09-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf events fixes from Ingo Molnar:
- Skip empty AUX records with only format flags (Leo Yan)
- Fix use-after-free when perf mmap() revival races with the
last munmap() (Yilin Zhang, Weiming Shi)
* tag 'perf-urgent-2026-09-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Fix use-after-free when perf mmap() revival races with the last munmap()
perf/core: Skip empty AUX records with only format flags
- Fix a softirq processing delay bug in local_interrupt_disable(),
which should mostly only affect the Rust runtime (Boqun Feng)
- Remove the hardirq_disable_count() function which caused the
previous bug and is now unused & unnecessary (Boqun Feng)
- lockdep: Invalidate stale class_cache entries for zapped classes
(Eric Dumazet)
- Fix rt_mutex specific futex scheduling helpers
(Sebastian Andrzej Siewior)
- Fix rcuwait use-after-free race during futex requeue PI (Yao Kai)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-urgent-2026-09-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Ingo Molnar:
- Fix a softirq processing delay bug in local_interrupt_disable(),
which should mostly only affect the Rust runtime (Boqun Feng)
- Remove the hardirq_disable_count() function which caused the
previous bug and is now unused & unnecessary (Boqun Feng)
- lockdep: Invalidate stale class_cache entries for zapped classes
(Eric Dumazet)
- Fix rt_mutex specific futex scheduling helpers
(Sebastian Andrzej Siewior)
- Fix rcuwait use-after-free race during futex requeue PI (Yao Kai)
* tag 'locking-urgent-2026-09-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Prevent rcuwait use-after-free during requeue PI
futex: Provide rt_mutex_.*_schedule() equivalents for futex scheduling
locking/lockdep: Invalidate stale class_cache entries for zapped classes
preempt: Remove hardirq_disable_count()
interrupt: Disable interrupt before modifying hardirq_disable counter
- Revert a commit to the mbigen irqchip driver that caused
a regression on two-port Hi1616 chips (Caina)
- Fix a too-long-preemption-off bug in the stm32mp-exti
irqchip driver, caused by a time unit ambiguity & mismatch (Ju Nan)
- Remove the now completely unused irq_domain_add_linear()
inline function (Jiri Slaby)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'irq-urgent-2026-09-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull IRQ subsystem fixes from Ingo Molnar:
- Revert a commit to the mbigen irqchip driver that caused
a regression on two-port Hi1616 chips (Caina)
- Fix a too-long-preemption-off bug in the stm32mp-exti
irqchip driver, caused by a time unit ambiguity & mismatch
(Ju Nan)
- Remove the now completely unused irq_domain_add_linear()
inline function (Jiri Slaby)
* tag 'irq-urgent-2026-09-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/stm32mp-exti: Fix the unit of the hwspinlock timeout
Revert "irqchip/mbigen: Fix mbigen node address layout"
irqdomain: Delete irq_domain_add_linear()
Here is a single virtio console fix for 7.3-rc2 to fix a much reported
regression in 7.3-rc1, sorry about that. It's not been in linux-next,
but it has been sent by many different developers to resolve the issue
and is "obviously" correct.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull virtio console fix from Greg KH:
"Here is a single virtio console fix for 7.3-rc2 to fix a much reported
regression in 7.3-rc1, sorry about that. It's not been in linux-next,
but it has been sent by many different developers to resolve the issue
and is 'obviously' correct"
* tag 'tty-7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
virtio_console: allocate the port_buffer with the caller's gfp
Here are some small staging driver fixes to resolve some reported bugs
that have been found, and tested, in a few staging drivers in 7.3-rc1.
Included in here are:
- OOB read problem fixes in the rtl8723bs driver
- fbtft driver fix
- sm750fb driver fix
All of these have been in linux-next this week with no reported
problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are some small staging driver fixes to resolve some reported bugs
that have been found, and tested, in a few staging drivers in 7.3-rc1.
Included in here are:
- OOB read problem fixes in the rtl8723bs driver
- fbtft driver fix
- sm750fb driver fix
All of these have been in linux-next this week with no reported
problems"
* tag 'staging-7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: sm750fb: fix mono image source stride mismatch in lynxfb_ops_imageblit()
staging: rtl8723bs: fix OOB read in rtw_restruct_wmm_ie()
staging: rtl8723bs: fix OOB read in rtw_action_frame_parse()
staging: rtl8723bs: fix OOB read / stack overflow in rtw_get_wps_attr()
staging: fbtft: make dirty_lock IRQ-safe
Here are some small USB driver fixes for reported problems and
regressions. Include in here are:
- xhci driver fixes
- cdns3 driver fixes
- usb gadget driver fixes for syzbot found problems
- typec driver fixes for broken hardware and other bugs found
- kernel data leaks in mdc800 driver
- usb storage driver fixes
- other small USB driver fixes
All of these have been in linux-next this week with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some small USB driver fixes for reported problems and
regressions. Include in here are:
- xhci driver fixes
- cdns3 driver fixes
- usb gadget driver fixes for syzbot found problems
- typec driver fixes for broken hardware and other bugs found
- kernel data leaks in mdc800 driver
- usb storage driver fixes
- other small USB driver fixes
All of these have been in linux-next this week with no reported
issues"
* tag 'usb-7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (25 commits)
usb: typec: qcom-pmic-typec: drain cc_debounce_dwork if port_start() fails
usb: typec: qcom-pmic-typec: disable cc_debounce_dwork on stop
usb: gadget: fix null pointer dereference in usb_put_function_instance()
usb: typec: qcom-pmic: cancel reset_work on stop
usb: gadget: f_mass_storage: fix null pointer dereference in fsg_common_set_num_buffers()
usb: f_mass_storage: Bump local buffer size in fsg_common_create_luns()
usb: storage: realtek_cr: fix use-after-free on disconnect
usb: cdnsp: fix wakeup from S3 after controller context loss
usb-storage: ene_ub6250: fix race between scan work and probe
USB: gadget: fix NULL pointer dereference in gadget_dev_ioctl()
usb: gadget: f_midi: initialize work in f_midi_alloc()
usb: gadget: f_midi2: fix use-after-free in string attribute show path
usb: typec: tipd: Fix Thunderbolt altmode VDOs for cd321x
usb: gadget: midi2: Fix null-pointer dereference in f_midi2_free_ep_reqs
usb: typec: hd3ss3220: track VBUS enable state per consumer
usb: dwc3: clear forceRM when issuing EndTransfer
usb: dwc3: google: Initialise probe properties with DWC3_DEFAULT_PROPERTIES
usb: typec: mux: avoid duplicated mux switches
usb: typec: mux: Fix typec_switch_match()
usb: image: mdc800: change kmalloc() to kzalloc()
...
The arena range tree allocates its nodes with kmalloc_nolock() since
commit f8c67d8550 ("bpf: Use kmalloc_nolock() in range tree").
kmalloc_nolock() requires slab caches with cmpxchg128 support
(__CMPXCHG_DOUBLE); on riscv cmpxchg128 is provided by the ZACAS
extension. On systems without ZACAS every arena map creation fails
with a misleading -ENOMEM.
Report the missing support instead: make bpf_jit_supports_arena()
return system_has_cmpxchg128() where it is defined, so arena map
creation fails with -EOPNOTSUPP on systems without ZACAS. The macro
is only defined when both CONFIG_RISCV_ISA_ZACAS and
CONFIG_TOOLCHAIN_HAS_ZACAS are enabled, so guard it with #ifdef the
same way mm/slab.h consumes it, and reject arena otherwise. This
matches how arena BPF_CMPXCHG instructions are already gated on ZACAS
in bpf_jit_supports_insn().
Fixes: f8c67d8550 ("bpf: Use kmalloc_nolock() in range tree")
Signed-off-by: Chen Pei <cp0613@linux.alibaba.com>
Acked-by: Pu Lehui <pulehui@huawei.com>
Acked-by: Björn Töpel <bjorn@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/bpf/20260902061451.1416-1-cp0613@linux.alibaba.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Add a verifier test that leaves the raw tracepoint context pointer in R1
when calling bpf_loop(). This is the smallest trigger for the incorrect
precision backtracking: it reuses an existing callback and needs no maps or
userspace setup.
Expect an ordinary scalar-type rejection. Without the verifier fix, the
test instead reaches precision backtracking and reports an internal
"backtracking misuse" error.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://patch.msgid.link/20260905014735.1452988-3-memxor@gmail.com
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
bpf_loop() declares its nr_loops argument as ARG_ANYTHING. Privileged
programs may pass pointer values to such arguments, so check_func_arg()
lets a pointer-valued R1 reach the helper-specific checks.
Since commit bb124da69c ("bpf: keep track of max number of bpf_loop
callback iterations"), the verifier marks R1 precise and reads its upper
bound to limit callback simulation. Precision backtracking only accepts
scalar registers, so passing a pointer instead triggers the "backtracking
misuse" verifier warning. Kernels with panic_on_warn enabled subsequently
panic.
Introduce ARG_SCALAR for helper arguments that only accept scalar values
and use it for bpf_loop() nr_loops. Generic helper argument validation then
rejects pointers before loop inlining and precision processing.
Fixes: bb124da69c ("bpf: keep track of max number of bpf_loop callback iterations")
Reported-by: syzbot+7b47f87674e9a1569110@syzkaller.appspotmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://patch.msgid.link/20260905014735.1452988-2-memxor@gmail.com
Closes: https://lore.kernel.org/bpf/6a9ad24c.b5d4176b.238c3e.0001.GAE@google.com/
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
- Run scripts/coccinelle/api/kmalloc_objs.cocci for v7.3
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Merge tag 'kmalloc_obj-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull kmalloc_obj conversions from Kees Cook:
"Another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules
in scripts/coccinelle/api/kmalloc_objs.cocci"
* tag 'kmalloc_obj-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
treewide: refresh kmalloc_obj() conversions
drm/amd/display: Fix harmless type mismatch in allocation
- Fix kernfs listxattr() not returning security xattr names (e.g.
SELinux labels) when the kernfs node has no allocated kernfs_iattrs
- Fix silent truncation of IRQ vector indices in the Rust PCI
abstractions
- Don't select OF from DRIVER_PE_KUNIT_TEST; skip the test when OF is
disabled instead of silently enabling extra kernel functionality
- Russ Weight is retiring from kernel development; update the Firmware
Loader sysfs contact to the driver-core mailing list, add a CREDITS
entry for Firmware Upload, and update MAINTAINERS accordingly
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Merge tag 'driver-core-7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core fixes from Danilo Krummrich:
- Fix kernfs listxattr() not returning security xattr names (e.g.
SELinux labels) when the kernfs node has no allocated kernfs_iattrs
- Fix silent truncation of IRQ vector indices in the Rust PCI
abstractions
- Don't select OF from DRIVER_PE_KUNIT_TEST; skip the test when OF is
disabled instead of silently enabling extra kernel functionality
- Russ Weight is retiring from kernel development; update the Firmware
Loader sysfs contact to the driver-core mailing list, add a CREDITS
entry for Firmware Upload, and update MAINTAINERS accordingly
* tag 'driver-core-7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core:
MAINTAINERS: Remove Russ Weight from Firmware Loader
CREDITS: Add CREDITS entry for Firmware Upload
firmware_loader: Change contact for sysfs nodes
rust: pci: reject IRQ vector indices that do not fit in u32
kernfs: preserve security xattrs without allocating iattrs
drivers: base: test: DRIVER_PE_KUNIT_TEST should not select OF
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Merge tag 'loongarch-fixes-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch fixes from Huacai Chen:
- Fix build errors when RUST and KASAN enabled
- fix a typo in comment of vmlinux.lds.S
- fix several bugs in Kprobes, BPF JIT and KVM support
* tag 'loongarch-fixes-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
perf build: Add clang and rust target flags for LoongArch
LoongArch: KVM: Fix TOCTOU race on pv_features
LoongArch: KVM: Validate MSI data before routing it to EIOINTC
LoongArch: KVM: Preserve memslot arch flags on KVM_MR_FLAGS_ONLY
LoongArch: KVM: Remove unused function kvm_arch_flush_remote_tlbs_memslot()
LoongArch: KVM: Fix resource leak in kvm_loongarch_env_init() error path
LoongArch: KVM: Add unregister helpers for the KVM interrupt devices
LoongArch: KVM: Free init resources if kvm_init() fails
LoongArch: BPF: Fix off-by-one error for insn_is_cast_user()
LoongArch: Avoid preempt count underflow without probe
LoongArch: Do not save/restore percpu base register in rethook trampoline
LoongArch: Remove unused setup_profiling_timer() function
LoongArch: Fix typo "avaliable" in comment of vmlinux.lds.S
LoongArch: Do not select HAVE_RUST when KASAN is enabled
put_chars() runs from the hvc console write path with preemption
disabled, so it asks alloc_buf() for GFP_ATOMIC. Only the data buffer
gets it: the struct port_buffer itself keeps the GFP_KERNEL default, so
the allocation can enter direct reclaim and sleep. A write to /dev/kmsg
on a CONFIG_DEBUG_ATOMIC_SLEEP kernel splats:
BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:320
in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 1, name: virtme-ng-init
preempt_count: 1, expected: 0
Preemption disabled at:
[<ffffffff813fd90d>] vprintk_emit+0x17d/0x510
Call Trace:
<TASK>
dump_stack_lvl+0x69/0xa0
__might_resched+0x37a/0x4d0
__kmalloc_cache_noprof+0x94/0x5f0
put_chars+0x209/0x3e0
hvc_console_print+0x234/0x640
console_flush_all+0x4fc/0x950
console_unlock+0xbf/0x1b0
vprintk_emit+0x312/0x510
devkmsg_emit+0xba/0x110
devkmsg_write+0x21b/0x2e0
vfs_write+0x4dc/0x9d0
ksys_write+0x108/0x1e0
do_syscall_64+0xfa/0x460
</TASK>
Pass gfp on to that allocation too.
Fixes: fc220d6be3 ("virtio_console: refactor __send_to_port() buffer ownership")
Signed-off-by: Breno Leitao <leitao@debian.org>
Acked-by: Sungho Bae <baver.bae@lge.com>
Tested-by: Florian Westphal <fw@strlen.de>
Link: https://patch.msgid.link/20260810-serial-v1-1-abbe51602c13@debian.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'for-7.3-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- preserve inode compression level when changing attributes
- fix lost wakeup when waiting for a zstd workspace
- fix bio context leaks after ordered extent processing errors
- in send, handle unexpected extents for non-regular inodes
- handle edge case in creation of reloc tree with enabled quotas
- in scrub report the exact failing offset, not the stripe base
- error handling fixes
- error code propagation in send, zoned mode and raid-stripe-tree
- restore active device pointer after seeding device addition error
- transaction abort fixups
- update Chris' email address
* tag 'for-7.3-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
MAINTAINERS: update Chris Mason's email address
btrfs: tests: do not touch page cache if root/inode allocation failed
btrfs: zstd: fix lost wakeup when waiting for a workspace
btrfs: do not force reloc root creation during qgroup_account_snapshot()
btrfs: send: fix lost error return value in will_overwrite_ref()
btrfs: abort transaction before releasing tree_log_mutex on commit failure
btrfs: zoned: propagate do_zone_finish() error in btrfs_zone_finish_endio()
btrfs: zoned: finish active block group cleanup if call_zone_finish() fails
btrfs: send: reject extents for non-regular inodes
btrfs: return proper negative error code for update_raid_extent_item()
btrfs: fix the possible bioc_list memory leak during error
btrfs: fix transaction use-after-free in raid stripe insertion
btrfs: scrub: report the failing sector's address, not the stripe base
btrfs: preserve the compression property when other inode flags change
btrfs: restore active device pointers after failed sprout
btrfs: detach failed sprout device from transaction update list
btrfs: clean up target device if block group marking fails
2 enhancements to add support and MCQ for additional Intel 4.0
controller types. The rest are all driver fixes, the largest of which is
the mpi3mr target use after free fix, follwed by a similar TOCTOU fix
for io_uring passthrough in bsg.
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Two enhancements to add support and MCQ for additional Intel 4.0
controller types.
The rest are all driver fixes, the largest of which is the mpi3mr
target use after free fix, follwed by a similar TOCTOU fix for
io_uring passthrough in bsg"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: megaraid_sas: Limit NVMe request size to the PRP chain frame
scsi: bsg: Fix TOCTOU in io_uring passthrough command setup
scsi: bsg: Cap io_uring sense copy to max_response_len
scsi: mpt3sas: Avoid out-of-bounds cpumask_of_node() call in _base_assign_reply_queues()
scsi: mpi3mr: Fix use-after-free on tgt_dev->starget during target device refresh/update
scsi: target: iscsi: Reserve a terminator byte for the login payload
scsi: target: iscsi: Fix hang for aborted WRITE_PENDING commands
scsi: ufs: ufs-pci: Add MCQ support for Intel UFS 4.0 controllers
scsi: ufs: ufs-pci: Add support for Intel UFS 4.0 HS-Gear5
scsi: sg: Report request-table problems when any status is set
scsi: mpi3mr: Fix target device refcount leak in mpi3mr_sas_port_add()
scsi: mpi3mr: Fix NULL pointer dereference in mpi3mr_sas_port_add()
scsi: ufs: ufs-qcom: Fix sequential read variance
scsi: ufs: ufs-qcom: Restore HS/LS link startup mode for Qualcomm UFS controller v6.2+
scsi: ibmvfc: Document protocol parameter of ibmvfc_alloc_target()
scsi: ibmvfc: Fix kernel-doc name for ibmvfc_scsi_relogin()
scsi: pm8001: Use rollback index when freeing MSI-X vectors
scsi: fnic: Initialize the NVMe local port info before registering
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Merge tag 'block-7.3-20260905' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:
- NVMe fixes via Keith:
- nvme-tcp fixes for an out-of-bounds write on an over-long PDU
- nvmet-tcp, nvmet-rdma and nvme-rdma leak and cleanup-ordering
fixes
- FDP placement id array racy access fix
- nvme-fc double free of fabrics options on nvme_add_ctrl()
failure, and a secret leak failure
- Fault injection opcode filtering
- stale namespace removal during scan
- Various other smaller fixes and cleanups
- Flag zoned disks with GENHD_FL_NO_PART
- Save the page offset gaps in a cloned bio
- Fix dma_alignment for large or unreported limits in loop and zloop
- Clear VM_MAYWRITE on a read-only ublk char device mmap
* tag 'block-7.3-20260905' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (25 commits)
nvme-tcp.h: drop kernel-doc comments, fix a few descriptions
nvme-fc: fix double free of fabrics options when nvme_add_ctrl() fails
nvmet: reject namespace enable without device path
nvmet-auth: Synchronize timeout work during SQ teardown
MAINTAINERS: update nvme entry
nvmet-tcp: reject unsolicited H2CData PDUs
nvme-tcp: defer TLS inline send to io_work
nvmet-tcp: fix out-of-bounds write when receiving an over-long PDU
nvme-tcp: return -EPROTO for a C2HData on a write
nvmet: print namespace IDs as unsigned 32bit value
nvme: print namespace IDs as unsigned 32bit value
nvme: remove stale namespaces by NSID range during scan
nvme: add missing SRCU grace period in error path
nvme-fabrics: fix DHCHAP secret leak on parse failure
ublk: clear VM_MAYWRITE on read-only ublk char device mmap
loop, zloop: fix dma_alignment for large or unreported limits
block: save page offset gaps in cloned bio
block: flag zoned disks with GENHD_FL_NO_PART
nvmet-rdma: fix queue leak when connect backlog is exceeded
nvme: add opcode filtering for fault injection
...
This is another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules in
scripts/coccinelle/api/kmalloc_objs.cocci
This catches both the set of kmalloc() uses added since the first
kmalloc_obj() conversions in v7.0 and adds a large group missed in the
first pass due to Coccinelle not interacting well with the cleanup.h
scoped_...() family of macros[1]. I worked around this with spatch's
"--macro-file" argument to a file with all the scoped_...() macros mapped
to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control
flow indicator I could find.
Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc,
riscv, and s390 with no new warnings.
Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1]
Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2]
Signed-off-by: Kees Cook <kees+treewide@kernel.org>
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Merge tag 'integrity-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
Pull IMA fixes from Mimi Zohar:
- Instantiating the ima_file_truncate and ima_path_truncate LSM hooks
resulted in configfs locking issues.
configfs files should not be measured, appraised, or audited in the
first place, so the builtin policies are updated to exclude them.
- IMA audit messages include the filename, which could result in a page
fault when the filename doesn't exist
- Un-hide the IMA_MEASURE_PCR_IDX Kconfig prompt
* tag 'integrity-v7.3-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
ima: allow users to specify the pcr index with IMA_MEASURE_PCR_IDX
ima: Check for ERR_PTR from dentry_path() in validate_hash_algo()
ima: don't measure/appraise files on configfs
configfs: move CONFIGFS_MAGIC definition to magic.h
Stop verification if mark_chain_precision() fails when called from
loop_flag_is_zero(). No functional change intended for the paths where
backtracking succeeds.
Fixes: 1ade237119 ("bpf: Inline calls to bpf_loop when callback is known")
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-9-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
