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3a2c4d55e3
53364 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Kees Cook
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3a2c4d55e3 |
treewide: refresh kmalloc_obj() conversions
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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Linus Torvalds
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421066905c |
Probes fixes for v7.3-rc1:
- kprobes: Protect kprobe_blacklist with RCU
. RCU-protect kprobe_blacklist and use kfree_rcu() to prevent UAF
races during module unloading and enable safe atomic lookups.
- tracing/probes: Fix multi-probe field use-after-free and BTF parsing
. Multi-probe UAF fix: Duplicate field and type strings on
trace_probe_event to prevent UAF when freeing primary probe.
. BTF member lookup fixes:
- Check the containing inner struct/union kflag when resolving
anonymous members to ensure correct bitfield offset calculation.
- Prevent unnamed bitfields from being pushed to anon_stack in
btf_find_struct_member(), avoiding false lookup errors.
- Fix code block indentation in get_bitoffset_of_field().
- uprobes: Error pointer safety
. Guard free_trace_uprobe() with IS_ERR_OR_NULL() to avoid crashing
during automatic cleanup when an error pointer is returned.
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Merge tag 'probes-fixes-v7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes fixes from Masami Hiramatsu:
- Protect kprobe_blacklist with RCU
RCU-protect kprobe_blacklist and use kfree_rcu() to prevent UAF races
during module unloading and enable safe atomic lookups.
- Fix multi-probe field use-after-free
Duplicate field and type strings on trace_probe_event to prevent UAF
when freeing primary probe
- Fix probe BTF member lookup:
Check the containing inner struct/union kflag when resolving
anonymous members to ensure correct bitfield offset calculation
Prevent unnamed bitfields from being pushed to anon_stack in
btf_find_struct_member(), avoiding false lookup errors
Fix code block indentation in get_bitoffset_of_field()
- uprobes error pointer safety
Guard free_trace_uprobe() with IS_ERR_OR_NULL() to avoid crashing
during automatic cleanup when an error pointer is returned
* tag 'probes-fixes-v7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
kprobes: Protect kprobe_blacklist with RCU
tracing/probes: Fix use-after-free on field name/type of events with multiple probes
tracing/probes: Fix code indent in get_bitoffset_of_field()
tracing/probes: Fix BTF kflag check for anonymous struct member access
tracing/probes: Fix anon_stack check for unnamed bitfields in btf_find_struct_member
uprobes: guard trace cleanup against error pointers
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Masami Hiramatsu (Google)
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0c4256196b |
kprobes: Protect kprobe_blacklist with RCU
__within_kprobe_blacklist() traverses kprobe_blacklist without holding
kprobe_mutex. When a module is unloaded, kprobe_remove_area_blacklist()
removes blacklist entries and immediately frees them with kfree().
A concurrent call to within_kprobe_blacklist() can therefore dereference
freed memory.
Furthermore, within_kprobe_blacklist() can be called in atomic or
non-preemptible contexts where the sleeping kprobe_mutex cannot be taken.
Protect kprobe_blacklist with RCU. Use guard(rcu)() and
list_for_each_entry_rcu() for traversal, list_add_tail_rcu() for
insertions, list_del_rcu() for deletions, and kfree_rcu() to reclaim
entries safely after a grace period.
Link: https://lore.kernel.org/all/178810004323.64882.16493230858653316962.stgit@devnote2/
Fixes:
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Henry Martin
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86b7a239ec |
tracing/probes: Fix use-after-free on field name/type of events with multiple probes
The fields of a probe-based dynamic event (kprobe, uprobe, eprobe and
fprobe events) are created in traceprobe_define_arg_fields() by handing
the probe_arg name/type strings to trace_define_field(), which only
stores the pointers without copying. Those strings are owned by the
trace_probe and are freed when that probe is removed.
An event can have several probes attached. The field list is defined
only once, by the first probe that registers the event, but it is kept
alive by any surviving sibling probe. Deleting just that first probe by
symbol -
# primary A: fields are defined from A's args
echo 'p:kprobes/ev vfs_read a1=$arg1' > kprobe_events
# append B: shares A's event call
echo 'p:kprobes/ev vfs_write a1=$arg1' >> kprobe_events
# delete only A (matched by symbol), B survives
echo '-:kprobes/ev vfs_read' >> kprobe_events
frees A's args (trace_probe_cleanup() -> traceprobe_free_probe_arg()),
but trace_probe_unlink() keeps the trace_probe_event because the probe
list is not empty. The event call stays registered via B while its
fields now reference freed memory. Any field lookup then reads it, e.g.
echo 'a1 == 1' > events/kprobes/ev/filter
BUG: KASAN: slab-use-after-free in strcmp+0xa7/0xb0
Call Trace:
strcmp
trace_find_event_field
parse_pred
process_preds
create_filter
apply_event_filter
event_filter_write
field->name references parg->name (kstrdup'd, freed with the probe) and,
for array arguments, field->type references parg->fmt (kmalloc'd, freed
with the probe) - the scalar type otherwise points at the static
fmttype rodata, which is safe.
Have traceprobe_define_arg_fields() duplicate the name and type strings
and anchor the copies on the trace_probe_event, which embeds the event
call and outlives every individual probe; trace_probe_event_free()
releases them.
The reproducer above triggers reliably; the field lookup and the delete
both run under event_mutex, so this is a dangling reference after
removal rather than a race.
The issue was found by the autokbug dynamic kernel fuzzer at Tencent
Yunding Lab.
Link: https://lore.kernel.org/all/20260826030009.1855331-1-bsdhenrymartin@gmail.com/
Fixes:
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Masami Hiramatsu (Google)
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871e07b6e3 |
tracing/probes: Fix code indent in get_bitoffset_of_field()
Fix code block indentation introduced by commit
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Masami Hiramatsu (Google)
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47e93045a2 |
tracing/probes: Fix BTF kflag check for anonymous struct member access
btf_find_struct_member() traverses into nested anonymous structures and
unions to find a struct member. However, get_bitoffset_of_field() in
trace_probe.c checked btf_type_kflag(type) using the outer parent type
instead of the actual anonymous structure/union that directly contains
the found member.
If the parent structure and anonymous structure have mismatched kflags
(e.g., the parent has kflag=0 while the anonymous structure has kflag=1
because it contains bitfields), the bitfield size encoded in the upper
8 bits of member->offset is erroneously treated as part of the byte/bit
offset, corrupting the resolved offset and failing to set last_bitsize.
Similarly, btf_find_struct_member() pushed anonymous member offsets
onto anon_stack without masking BTF_MEMBER_BIT_OFFSET() when kflag is set.
To fix this problem, update btf_find_struct_member() to return actual
containing structure/union type via member_type, use appropriate
__btf_member_bit_offset() to get bit offset, and use member_type for
btf_type_kflag() in get_bitoffset_of_field().
Link: https://lore.kernel.org/all/178827250904.123716.17452648791331881284.stgit@devnote2/
Fixes:
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Masami Hiramatsu (Google)
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f36d94a20c |
tracing/probes: Fix anon_stack check for unnamed bitfields in btf_find_struct_member
btf_find_struct_member() traverses into nested anonymous structures
and unions by pushing members with !member->name_off onto anon_stack.
However, it does not consider the unnamed bitfields (e.g. `int : 5`
or `unsigned int : 0`) which also have member->name_off == 0.
If such an unnamed bitfield is pushed to anon_stack, the
btf_find_struct_member() return an error even if there are other
valid entries in anon_stack.
To fix this, only push unnamed struct/union members to anon_stack.
Also move the btf_type_is_struct() check to the entry of this function
because now it is sure only struct/union are pushed to anon_stack.
Link: https://lore.kernel.org/all/178827249775.123716.7813217688423513612.stgit@devnote2/
Fixes:
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Andi Kleen
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738ef4cd82 |
uprobes: guard trace cleanup against error pointers
Sashiko pointed out the some of the scope cleanups for free_uprobe could get an error pointer. Handle this case in free_uprobe to prevent a crash. On the other hand the macro doesn't need the guard because free_uprobe itself already does the check. Link: https://lore.kernel.org/all/20260831150651.1134594-2-ak@kernel.org/ Assisted-by: omp:gpt-5.6-luna sashiko Signed-off-by: Andi Kleen <ak@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> |
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Linus Torvalds
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abdf623ddb |
workqueue: Fixes for v7.3-rc1
- An unbound worker pool could be freed while still reachable through the pending-activation list, leading to a use-after-free. Unlink before dropping the reference. - On PREEMPT_RT, the BH workqueue kick raised softirqs from preemptible context, tripping a lockdep assertion and possibly losing concurrently raised softirq bits. - Draining BH work off a dead CPU nests two pools' callback locks, which lockdep misreported as recursive locking. The nesting cannot deadlock. Annotate it. - Reject watchdog thresholds that overflow the conversion to jiffies. - Make the drgn workqueue dump script work again on kernels and vmcores from before the workqueue attrs field rename. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCapXs/Q4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGd75AP9VTI8d7dor4mn82j7J6l8Xcy8U1ePM/K5v1PqU n9lfUwD/aopS+dp/uCuqR6pLBxineFAPxNoEgxxO2bDv9OqhoAY= =fj3U -----END PGP SIGNATURE----- Merge tag 'wq-for-7.3-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq Pull workqueue fixes from Tejun Heo: - An unbound worker pool could be freed while still reachable through the pending-activation list, leading to a use-after-free. Unlink before dropping the reference - On PREEMPT_RT, the BH workqueue kick raised softirqs from preemptible context, tripping a lockdep assertion and possibly losing concurrently raised softirq bits - Draining BH work off a dead CPU nests two pools' callback locks, which lockdep misreported as recursive locking. The nesting cannot deadlock. Annotate it - Reject watchdog thresholds that overflow the conversion to jiffies - Make the drgn workqueue dump script work again on kernels and vmcores from before the workqueue attrs field rename * tag 'wq-for-7.3-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: tools/workqueue/wq_dump.py: Support backward compatibility for wq->attrs rename workqueue: reject watchdog thresholds that overflow jiffies workqueue: Fix unbound pool lifetime for pending pwqs workqueue: Use raise_softirq() to trigger softirq in irq_work handler workqueue: Annotate cb_lock nesting when draining a dead BH pool |
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Linus Torvalds
|
c3b510de42 |
cgroup: Fixes for v7.3-rc1
- After cgroup.kill was written to a cgroup, every child cloned into it with CLONE_INTO_CGROUP was spuriously killed because the fork path snapshotted the kill counter before resolving the target cgroup. - Releasing an isolated cpuset partition dropped the isolation of CPUs isolated on the kernel command line. - Selftest and documentation fixes. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCapXm8w4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGbhtAQCfUc4oanF94uiAGzH2UAA2HIorLT4TDjuDj/oM qrqeLQEA1p2XQz56SYXhK8fG+fy+Ep3xxqS2gStmtYL20ie4lQc= =i4QU -----END PGP SIGNATURE----- Merge tag 'cgroup-for-7.3-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup fixes from Tejun Heo: - After cgroup.kill was written to a cgroup, every child cloned into it with CLONE_INTO_CGROUP was spuriously killed because the fork path snapshotted the kill counter before resolving the target cgroup - Releasing an isolated cpuset partition dropped the isolation of CPUs isolated on the kernel command line - Selftest and documentation fixes * tag 'cgroup-for-7.3-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: selftests/cgroup: test clone3() into a previously killed cgroup cgroup: fix spurious SIGKILL of CLONE_INTO_CGROUP children selftests/cgroup: Add test for preserving boot-isolated CPUs cgroup/cpuset: Preserve boot-isolated CPUs on partition release selftests/cgroup: Drop invalid boot isolation comparison docs: cgroup-v2: fix misc.events key format description selftests/cgroup: Fix cg_run_in_subcgroups ignoring arg parameter selftests/cgroup: set the test plan after the setup checks |
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Linus Torvalds
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bf1079577a |
sched_ext: Fixes for v7.3-rc1
- The task ownership check in the dispatch queue move operation raced against the task exiting or moving to a different sub-scheduler, spuriously triggering scheduler aborts. Fix by moving the check under the queue lock. - The cgroup bandwidth change callback runs in a sleepable context but sleepable implementations were rejected at load time. Allow them and add a marker so userspace can detect the capability. - Sync tooling headers with the scx repo for accumulated compatibility improvements. - Example scheduler fixes: ignored timer re-arm failures and vtime credit loss on cgroup migration. - Documentation and comment fixes. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCapXcug4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGZFfAQCMdpcFMqLdaHkRMiWK+SopQ703AnnpoX9xC81t vy81mQD/QlIEZimidIS2xju3/HkHfVXX6hHxAbMy8hdclhYHlgM= =256l -----END PGP SIGNATURE----- Merge tag 'sched_ext-for-7.3-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext Pull sched_ext fixes from Tejun Heo: - The task ownership check in the dispatch queue move operation raced against the task exiting or moving to a different sub-scheduler, spuriously triggering scheduler aborts. Fix by moving the check under the queue lock - The cgroup bandwidth change callback runs in a sleepable context but sleepable implementations were rejected at load time. Allow them and add a marker so userspace can detect the capability - Sync tooling headers with the scx repo for accumulated compatibility improvements - Example scheduler fixes: ignored timer re-arm failures and vtime credit loss on cgroup migration - Documentation and comment fixes * tag 'sched_ext-for-7.3-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: sched_ext: Fix missing @slice and @vtime descriptions in finish_dispatch() kernel-doc sched_ext: Fix several comment issues sched_ext: Check bpf_timer_start return values in scx_qmap sched_ext: Fix vtime delta loss in scx_flatcg cgroup migration sched_ext: Fix timer pinning and return value in scx_central docs/sched_ext: document that cgroup CPU knobs are scheduler-dependent sched_ext: Fix spurious aborts in scx_bpf_dsq_move() on ownership change races sched_ext: Sync common and compat headers from the scx repo sched_ext: Sync tools autogen enum headers from the scx repo Docs/admin-guide/cgroup-v2: document BPF scheduler callbacks for cpu.max and cpu.idle sched_ext: Fix nonexistent field in sched-ext.rst example sched_ext: Allow ops.cgroup_set_bandwidth() to be sleepable |
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Linus Torvalds
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a7f25dc23f |
xfs: fixes for 7.3-rc2
Signed-off-by: Carlos Maiolino <cem@kernel.org> -----BEGIN PGP SIGNATURE----- iJUEABMJAB0WIQSmtYVZ/MfVMGUq1GNcsMJ8RxYuYwUCapUNuQAKCRBcsMJ8RxYu Y/QVAX9SDXNSP3dw04wAuYgwSH5Ftm+WAnwusAsSvJkQdTvU0nEpAHyjb6WokS5a EbOGy5UBfRyqJFOmOw6wF5Ax0Aoxrt+lN8CuoDoh6aEhtYlh0jvd50ustYX8QSas W2R9B6IFIw== =JWP4 -----END PGP SIGNATURE----- Merge tag 'xfs-fixes-7.3-rc2' of gitolite.kernel.org:/pub/scm/fs/xfs/xfs-linux Pull xfs fixes from Carlos Maiolino: "This contains a few fixes for the zoned storage support, a possible deadlock vector fix, some code refactoring patches and a quota evasion fix on XFS while exporting it via NFS. Please note that for the quota evasion fix, a couple patches for the capability subsystem are included in the pull request. Those have been ack'ed by the respective maintainer which also agreed to have them going through the xfs tree. This also includes a patch for the quota subsystem to stop issuing audit messages during quota enforcing. Quota maintainer also ack'ed and agreed with this going through xfs tree" * tag 'xfs-fixes-7.3-rc2' of gitolite.kernel.org:/pub/scm/fs/xfs/xfs-linux: capability: unexport has_capability_noaudit xfs: replace ns_capable_noaudit quota: Don't issue audit messages on quota enforcing capability: Add new capable_noaudit xfs: fix capability check in xfs xfs: restore bi_bdev in xfs_zone_gc_write_chunk xfs: split ioend handling into a separate source file xfs: factor out a xfs_iomap_set_anon_write helper xfs: fix zoned write iomap flags assignments xfs: fix racy open zone caching xfs: handle NULL open_zone for merged ioends in xfs_ioend_put_open_zones xfs: use inode_init_always_gfp with __GFP_NOFAIL in xfs_inode_alloc xfs: remove kmem_to_page() xfs: don't flush and invalidate internal RT device twice in xfs_shutdown_devices xfs: split an assert in xfs_trans_log_buf xfs: don't hold buffer locks across sync transaction commit in xfs_sync_sb_buf |
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Jiacheng Xu
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068c35b5d0 |
workqueue: reject watchdog thresholds that overflow jiffies
The watchdog threshold is supplied in seconds but is multiplied by HZ
before being used as a jiffies interval. Reject values that exceed
MAX_JIFFY_OFFSET / HZ so the multiplication cannot wrap and the
time_after() comparisons remain within their supported range.
The check is performed before changing the threshold or watchdog timer.
Zero remains the value used to disable the watchdog.
Fixes:
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Liang Luo
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068e5a0bc5 |
sched_ext: Fix missing @slice and @vtime descriptions in finish_dispatch() kernel-doc
Commit
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Wanwu Li
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4881a13521 |
sched_ext: Fix several comment issues
Fix several comment issues found during review: __setschduler_prio() -> __setscheduler_class() scx_iter_scx_dsq_new() -> bpf_iter_scx_dsq_new() scx_next_task_scx() -> set_next_task_scx() Signed-off-by: Wanwu Li <liwanwu@kylinos.cn> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Etienne Perot
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8e35992021 |
cgroup: fix spurious SIGKILL of CLONE_INTO_CGROUP children
Since commit |
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Linus Torvalds
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637836563d |
- Revert a commit to spinlock cleanup guards that got caught up
in the subtle limitations & fragility of guards (again...) and
caused a regression (Peter Zijlstra)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-urgent-2026-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fix from Ingo Molnar:
- Revert a commit to spinlock cleanup guards that got caught up
in the subtle limitations & fragility of guards (again...) and
caused a regression (Peter Zijlstra)
* tag 'locking-urgent-2026-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking: Revert switching guards to _irq_{disable,enable}()
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Linus Torvalds
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034dd340b0 |
tracing fixes for v7.3:
- Fix error output of boot instance creation failure Currently if a boot instance creation fails, instead of printing out the name of the instance that failed, it prints "(null)". That is because it prints "cur_str" that had already been processed by strsep(). Print the saved name instead. While at it, print the error code of the failure. - Fix use-after-free for same named historgrams Histograms can be named so that they can be used in multiple events. But if the named histogram has a variable attached, the second event that uses the named histogram which duplicates it and needs to free the original after duplication leaves the old variable in place and still visible. If another histogram uses than variable, it will use the stale one which will try to reference the freed duplicate histogram and crash the kernel. Free the duplicate variables along with the duplicated histogram data. - Check return value of kthread_run() in event self test The events self tests uses a kthread for testing but does not check if it succeeded in creating a kthread. If the kthread creation were to fail, the code will still try to call kthread_stop() on the error returned. - Fix race between reading trace_pipe and updating subbuffer size If a user is reading the trace_pipe file at the same time they update the ring buffer sub-buffer size, can cause the trace_pipe read to read stale data. Add trace_access_lock() around updating the ring buffer sub-buffer size. - Fix eventfs_inode on failure path in creation of the events directory In the creation of the "events" directory, if after allocating the eventfs_inode a failure is detected, it calls cleanup_ei() which calls free_ei(). The free_ei() will test if eventfs_inode being freed has no children. It is a bug if it does. But on the failure case of the creation of the "events" directory, the children lists have not yet been initialized and the free will trigger a warning because list_empty() on an uninitialized list returns false. Move the initialization into init_ei() where it makes more sense and makes sure that a created eventfs_inode has its lists initialized upon creation. - Check return value of kthread_run() in ftrace direct sample code The sample code that shows how to use the ftrace direct calls does not test the return of kthread_run() to see if it succeeds. Return a failure if the kthread_run() doesn't succeed. - Clear user events state on fork in case of alloc failure On fork, the child gets a pointer to the parent's user events state. It makes a copy of it then updates the child's pointer to it. But if the allocation fails, the duplication function leaves the child with a pointer to its parent's descriptor. When the child cleans up its data, it will free the parent's descriptor while the parent is still using it. In the duplication function, set the child's user_event_mm to NULL before testing if the allocation succeeded, and when it exits it will not free the parent's descriptor. - Fix retry exhaustion in simple ring buffer reader swap simple_ring_buffer_swap_reader_page() starts with retry set to 8 and post-decrements it only after a failed link replacement. On the final attempt, a successful replacement leaves retry at zero, while a failed replacement leaves it at -1. But the check for success expects the retry value to be non-zero and exits with an error on zero. This is the opposite result. Fix it. - Fail nicely when the remote swap_reader_page() returns an error Currently, if the swap_reader_page() of a remote buffer fails, it triggers a WARN_ON_ONCE() and continues normally. Instead, have it exit with an error and a pr_warn() print instead of a full WARNING. -----BEGIN PGP SIGNATURE----- iIoEABYKADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCapOC3hQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qvjkAQCGVuyK980rwiBnfenWLpeB3QjfHA8B mV0mJSlGWm1t1gEA9WWzMGbp+OHeRV2xyA+xW7OS1S58VO9OIGrzXCGqbAM= =TrF5 -----END PGP SIGNATURE----- Merge tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing fixes from Steven Rostedt: - Fix error output of boot instance creation failure Currently if a boot instance creation fails, instead of printing out the name of the instance that failed, it prints "(null)". That is because it prints "cur_str" that had already been processed by strsep(). Print the saved name instead. While at it, print the error code of the failure. - Fix use-after-free for same named historgrams Histograms can be named so that they can be used in multiple events. But if the named histogram has a variable attached, the second event that uses the named histogram which duplicates it and needs to free the original after duplication leaves the old variable in place and still visible. If another histogram uses than variable, it will use the stale one which will try to reference the freed duplicate histogram and crash the kernel. Free the duplicate variables along with the duplicated histogram data. - Check return value of kthread_run() in event self test The events self tests uses a kthread for testing but does not check if it succeeded in creating a kthread. If the kthread creation were to fail, the code will still try to call kthread_stop() on the error returned. - Fix race between reading trace_pipe and updating subbuffer size If a user is reading the trace_pipe file at the same time they update the ring buffer sub-buffer size, can cause the trace_pipe read to read stale data. Add trace_access_lock() around updating the ring buffer sub-buffer size. - Fix eventfs_inode on failure path in creation of the events directory In the creation of the "events" directory, if after allocating the eventfs_inode a failure is detected, it calls cleanup_ei() which calls free_ei(). The free_ei() will test if eventfs_inode being freed has no children. It is a bug if it does. But on the failure case of the creation of the "events" directory, the children lists have not yet been initialized and the free will trigger a warning because list_empty() on an uninitialized list returns false. Move the initialization into init_ei() where it makes more sense and makes sure that a created eventfs_inode has its lists initialized upon creation. - Check return value of kthread_run() in ftrace direct sample code The sample code that shows how to use the ftrace direct calls does not test the return of kthread_run() to see if it succeeds. Return a failure if the kthread_run() doesn't succeed. - Clear user events state on fork in case of alloc failure On fork, the child gets a pointer to the parent's user events state. It makes a copy of it then updates the child's pointer to it. But if the allocation fails, the duplication function leaves the child with a pointer to its parent's descriptor. When the child cleans up its data, it will free the parent's descriptor while the parent is still using it. In the duplication function, set the child's user_event_mm to NULL before testing if the allocation succeeded, and when it exits it will not free the parent's descriptor. - Fix retry exhaustion in simple ring buffer reader swap simple_ring_buffer_swap_reader_page() starts with retry set to 8 and post-decrements it only after a failed link replacement. On the final attempt, a successful replacement leaves retry at zero, while a failed replacement leaves it at -1. But the check for success expects the retry value to be non-zero and exits with an error on zero. This is the opposite result. Fix it. - Fail nicely when the remote swap_reader_page() returns an error Currently, if the swap_reader_page() of a remote buffer fails, it triggers a WARN_ON_ONCE() and continues normally. Instead, have it exit with an error and a pr_warn() print instead of a full WARNING. * tag 'trace-v7.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: ring-buffer: Stop remote reader update when page swap fails tracing: Fix retry exhaustion in simple ring buffer reader swap tracing/user_events: Clear copied tracing state before fork duplication samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-multi-modify samples/ftrace: Fix kthread_stop() on ERR_PTR in ftrace-direct-modify eventfs: Initialize ei->children and ei->list in init_ei() tracing: Fix use-after-free in trace_pipe read on sub-buffer order change tracing: Fix crash passing ERR_PTR to kthread_stop() tracing: Fix use-after-free with same-name named triggers tracing: Fix logged instance name on creation failure |
||
|
Ivan Immanuel Shaji
|
5eab74874d |
ring-buffer: Stop remote reader update when page swap fails
The remote swap_reader_page callback can return -EBUSY when the writer
moves the head before the remote catches it, particularly during an event
storm on a small buffer. __rb_get_reader_page_from_remote() currently
warns about that failure but continues with the unchanged reader ID and
rearranges the local page list as though the swap succeeded.
Handle the callback failure as a recoverable error. Report it with
pr_warn_ratelimited() and return NULL. Callers already handle a NULL reader
page as a failed attempt. This avoids splicing the same page as both the
previous and new reader without flooding the log under contention.
Cc: stable@vger.kernel.org
Fixes:
|
||
|
Ivan Immanuel Shaji
|
e0d3aed7b1 |
tracing: Fix retry exhaustion in simple ring buffer reader swap
simple_ring_buffer_swap_reader_page() starts with retry set to 8 and
post-decrements it only after a failed link replacement. On the final
attempt, a successful replacement leaves retry at zero, while a failed
replacement leaves it at -1.
The current !retry test reverses both outcomes. It returns an error after
a successful final replacement, leaving the link update complete but the
reader bookkeeping unfinished. After a failed final replacement, it
falls through and updates the head and reader pointers as though the
replacement succeeded, which can corrupt the ring.
Treat only a negative counter as exhaustion and return the documented
-EBUSY error.
Cc: stable@vger.kernel.org
Fixes:
|
||
|
Jérémy Jean
|
390f6bd858 |
tracing/user_events: Clear copied tracing state before fork duplication
dup_task_struct() copies user_event_mm from the parent into the child,
without grabbing a reference to it. user_event_mm_dup() should
replace it, but it leaves that copied pointer unmodified if
user_event_mm_alloc() fails.
When the child exits, user_event_mm_remove() decrements a reference
the child never owned, which ultimately frees user_event_mm, while
the parent still as a stale pointer to it. This creates a UAF, which
KASAN reports as:
BUG: KASAN: slab-use-after-free in
current_user_event_mm+0x51/0x1d0 Write of size 4 at addr
ffff888005010d30 by task init/44
Call Trace:
<TASK>
kasan_report+0xce/0x100
kasan_check_range+0x10f/0x1e0
current_user_event_mm+0x51/0x1d0
user_events_ioctl+0x82e/0x15c0
__x64_sys_ioctl+0x139/0x1c0
do_syscall_64+0xce/0x450
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Allocated by task 44:
__kasan_kmalloc+0x8f/0xa0
__kmalloc_cache_noprof+0x180/0x3a0
user_event_mm_alloc+0x3c/0x1f0
current_user_event_mm+0x88/0x1d0
Freed by task 42:
__kasan_slab_free+0x43/0x70
kfree+0x13a/0x390
process_one_work+0x696/0xf90
worker_thread+0x420/0xba0
The fix simply clears the copied pointer before any possible failure.
In case of failure, the child then has nothing to free.
Cc: stable@vger.kernel.org
Fixes:
|
||
|
Linus Torvalds
|
7cec13314d |
dma-mapping fix for Linux 7.3
- integer overflow fix for kernel cmdline parser for DMA contiguous initialization code (Alexander Graf) -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQSrngzkoBtlA8uaaJ+Jp1EFxbsSRAUCapAQqwAKCRCJp1EFxbsS RCScAQDLf7mcAq6YoJQ2YnUetzda+eGO9vvFPuNlmj5RdSfcgwD+L/+rSV17P7Sc d11981LdKsEnKWJMrZhRbWzI/Q+bnw0= =Owsi -----END PGP SIGNATURE----- Merge tag 'dma-mapping-7.3-2026-08-27' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux Pull dma-mapping fix from Marek Szyprowski: - integer overflow fix for kernel cmdline parser for DMA contiguous initialization code (Alexander Graf) * tag 'dma-mapping-7.3-2026-08-27' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux: dma-contiguous: fix truncation of numa_cma / cma_pernuma sizes >= 2G |
||
|
Linus Torvalds
|
18fbf5151d |
mm.git review status for linus..mm-stable
Everything: Total patches: 171 Reviews/patch: 1.83 Reviewed rate: 82% Excluding selftests: Total patches: 149 Reviews/patch: 1.77 Reviewed rate: 80% Excluding selftests and maple_tree: Total patches: 129 Reviews/patch: 1.99 Reviewed rate: 89% Summary of patch series in this merge: - "mm/rmap: index MAP_PRIVATE file-backed folios by anonymous pgoff" (Lorenzo Stoakes): Index MAP_PRIVATE file-backed folios by their anonymous page offset to resolve confusion around reverse mapping for zeroed and CoW'd file-backed memory. Use this new VMA anonymous page offset tracking to eliminate index conflicts and lay the foundation for scalable CoW performance improvements. - "promote mapped executable folios after first usage for MGLRU" (Baolin Wang): Make MGLRU's protection of mapped executable file folios more reliable. Follow the classical LRU's logic, promoting mapped executable file folios after their first usage to give executable code a better chance to stay in memory and improve workload performance. - "mm: vmscan: fix node reclaim ignoring swappiness parameter" (Ridong Chen): Fix per-node proactive reclaim interface's ignoring the swappiness parameter when CONFIG_MEMCG is disabled by consolidating sc_swappiness() into a single function that checks proactive_swappiness regardless of kernel configuration. - "mm/vmscan: reduce lru_lock contention via vmstat-derived scan-balance cost" (Usama Arif): Reduce lru_lock contention in the reclaim path by deriving scan-balance costs from vmstat counters rather than lock-acquired producer updates. Read and decay these cost signals on the reclaim side under a dedicated per-lruvec lock, reducing total LRU lock wait time by over 60% without impacting scan throughput. - "zram: fix zram issues reported by sashiko" (Sergey Senozhatsky): Fix two low-risk zram bugs which Sashiko spotted in drive-by review. - "Honor XA_FLAGS_ACCOUNT in xas_split_alloc() and charge to folio's memcg" (Zi Yan): Fix xas_split_alloc() by enabling target folio memcg charging during splits and adding the missing __GFP_ACCOUNT flag for proper XArray node memory accounting. - "selftests/mm: use pattern matching in .gitignore" (Pratyush Mallick): Replace hardcoded binary names in selftests/mm/.gitignore with a generic pattern-matching rule to automatically ignore generated test files and avoid manual updates when adding new tests. - "mm/page_ext: remove pgdat_page_ext_init()" (Sang-Heon Jeon): Make the incompatibility between FLATMEM and NUMA explicit in mm/Kconfig and remove the unused pgdat_page_ext_init() function. - "zram: fix zstd error paths and add parameter validation" (Haoqin Huang): Clean up zram compression backends by removing redundant error cleanup, adding parameter and dictionary validation, auto-prefixing algorithm error logs, and resetting parameters prior to reinitialization. - "zram: fix stale scan bounds after reinitialization" (Longlong Xia): Prevent out-of-bounds slot accesses during concurrent zram resets by moving table scan bound calculations under dev_lock in writeback_store() and read_block_state(). - "add anon mTHP collapse test cases" (Baolin Wang): Extend selftests helper functions to support arbitrary page orders and add new test cases and options for mTHP collapse in khugepaged. - "selftests/mm: Handle unsupported and transient test conditions" (Muhammad Usama Anjum): Update MM selftests to report a SKIP status instead of a failure when required kernel or filesystem features are unsupported, while adding retry logic for transient page migration errors. - "mm/zswap: Fixes and improves the zswap shrink" (Hao Jia): Fix the missing zswap global shrinker when CONFIG_MEMCG is disabled and extend shrink_memcg() to support batch writeback for improved writeback efficiency. - "alloc_tag: introduce IOCTL-based filtering for MAP" (Suren Baghdasaryan): Introduce an IOCTL-based binary interface for memory allocation profiling that enables kernel-side filtering before per-CPU counter aggregation. This eliminates the text-parsing overhead of /proc/allocinfo and provides up to a 20x speedup by transferring only filtered allocation data to userspace. - "better block swap batching and a different take on swap_ops v5" (Christoph Hellwig): Refactor block swap I/O to use swap_iocb for batching instead of single-bio requests and rebase the swap_ops interface, achieving faster swap throughput during kernel builds. - "mm: kmemleak: reduce transient false positives by confirming leaks" (Catalin Marinas): Reduce false-positive kmemleak reports by combining two kmemleak enhancements that add a second confirmation scan and a configurable minimum unreferenced scan count module parameter. - "mm: kmemleak: default min_unref_scans to 2 for verbose kernels" (Breno Leitao): Auto-scanning kernels can generate false-positive memory leak reports on single scans, so this patch defaults min_unref_scans to 2 when CONFIG_DEBUG_KMEMLEAK_VERBOSE is enabled to require a second confirming scan. - "swap_ops updates" (Christoph Hellwig): Batching I/O for synchronous swap devices causes performance regressions and filesystem-based swap suffers from double-indirection overhead. This series resolves both issues by reintroducing per-folio writes for synchronous swap and allowing filesystems to directly export their own swap_ops. - "mm/khugepaged: several cleanups" (Nico Pache): khugepaged accumulated redundant state-checking patterns and outdated comments following mTHP integration. Introduce dedicated helpers for PTE validation and event counting while refreshing the internal documentation. - "maple_tree: lock checking and clean ups" (Liam Howlett): Syzbot reports incorrectly blame memory management exit paths for locking bugs, maple tree erase operations risk allocation failures without gfp flags and internal documentation lacks clarity. Improve lock error detection, update docs, fix race and allocation edge cases and optimize erase allocations using a fallback to GFP_KERNEL | GFP_NOFAIL. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCao9nJQAKCRDdBJ7gKXxA jk/9AQDlfevYJuSJmzAI8bt8ISG+/TfXMtIZC/MdbHqtQVYWPQD8Cvm3DUZsdGB/ Gloq/HBFuMPgE8p2pwUIthdgnTPNvAc= =c+Nb -----END PGP SIGNATURE----- Merge tag 'mm-stable-2026-08-26-15-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull more MM updates from Andrew Morton: - "mm/rmap: index MAP_PRIVATE file-backed folios by anonymous pgoff" (Lorenzo Stoakes) Index MAP_PRIVATE file-backed folios by their anonymous page offset to resolve confusion around reverse mapping for zeroed and CoW'd file-backed memory. Use this new VMA anonymous page offset tracking to eliminate index conflicts and lay the foundation for scalable CoW performance improvements. - "promote mapped executable folios after first usage for MGLRU" (Baolin Wang) Make MGLRU's protection of mapped executable file folios more reliable. Follow the classical LRU's logic, promoting mapped executable file folios after their first usage to give executable code a better chance to stay in memory and improve workload performance. - "mm: vmscan: fix node reclaim ignoring swappiness parameter" (Ridong Chen) Fix per-node proactive reclaim interface's ignoring the swappiness parameter when CONFIG_MEMCG is disabled by consolidating sc_swappiness() into a single function that checks proactive_swappiness regardless of kernel configuration. - "mm/vmscan: reduce lru_lock contention via vmstat-derived scan-balance cost" (Usama Arif) Reduce lru_lock contention in the reclaim path by deriving scan-balance costs from vmstat counters rather than lock-acquired producer updates. Read and decay these cost signals on the reclaim side under a dedicated per-lruvec lock, reducing total LRU lock wait time by over 60% without impacting scan throughput. - "zram: fix zram issues reported by sashiko" (Sergey Senozhatsky) Fix two low-risk zram bugs which Sashiko spotted in drive-by review. - "Honor XA_FLAGS_ACCOUNT in xas_split_alloc() and charge to folio's memcg" (Zi Yan) Fix xas_split_alloc() by enabling target folio memcg charging during splits and adding the missing __GFP_ACCOUNT flag for proper XArray node memory accounting. - "selftests/mm: use pattern matching in .gitignore" (Pratyush Mallick) Replace hardcoded binary names in selftests/mm/.gitignore with a generic pattern-matching rule to automatically ignore generated test files and avoid manual updates when adding new tests. - "mm/page_ext: remove pgdat_page_ext_init()" (Sang-Heon Jeon) Make the incompatibility between FLATMEM and NUMA explicit in mm/Kconfig and remove the unused pgdat_page_ext_init() function. - "zram: fix zstd error paths and add parameter validation" (Haoqin Huang) Clean up zram compression backends by removing redundant error cleanup, adding parameter and dictionary validation, auto-prefixing algorithm error logs, and resetting parameters prior to reinitialization. - "zram: fix stale scan bounds after reinitialization" (Longlong Xia) Prevent out-of-bounds slot accesses during concurrent zram resets by moving table scan bound calculations under dev_lock in writeback_store() and read_block_state(). - "add anon mTHP collapse test cases" (Baolin Wang) Extend selftests helper functions to support arbitrary page orders and add new test cases and options for mTHP collapse in khugepaged. - "selftests/mm: Handle unsupported and transient test conditions" (Muhammad Usama Anjum) Update MM selftests to report a SKIP status instead of a failure when required kernel or filesystem features are unsupported, while adding retry logic for transient page migration errors. - "mm/zswap: Fixes and improves the zswap shrink" (Hao Jia) Fix the missing zswap global shrinker when CONFIG_MEMCG is disabled and extend shrink_memcg() to support batch writeback for improved writeback efficiency. - "alloc_tag: introduce IOCTL-based filtering for MAP" (Suren Baghdasaryan) Introduce an IOCTL-based binary interface for memory allocation profiling that enables kernel-side filtering before per-CPU counter aggregation. This eliminates the text-parsing overhead of /proc/allocinfo and provides up to a 20x speedup by transferring only filtered allocation data to userspace. - "better block swap batching and a different take on swap_ops v5" (Christoph Hellwig) Refactor block swap I/O to use swap_iocb for batching instead of single-bio requests and rebase the swap_ops interface, achieving faster swap throughput during kernel builds. - "mm: kmemleak: reduce transient false positives by confirming leaks" (Catalin Marinas) Reduce false-positive kmemleak reports by combining two kmemleak enhancements that add a second confirmation scan and a configurable minimum unreferenced scan count module parameter. - "mm: kmemleak: default min_unref_scans to 2 for verbose kernels" (Breno Leitao) Auto-scanning kernels can generate false-positive memory leak reports on single scans, so this patch defaults min_unref_scans to 2 when CONFIG_DEBUG_KMEMLEAK_VERBOSE is enabled to require a second confirming scan. - "swap_ops updates" (Christoph Hellwig) Batching I/O for synchronous swap devices causes performance regressions and filesystem-based swap suffers from double-indirection overhead. This series resolves both issues by reintroducing per-folio writes for synchronous swap and allowing filesystems to directly export their own swap_ops. - "mm/khugepaged: several cleanups" (Nico Pache) khugepaged accumulated redundant state-checking patterns and outdated comments following mTHP integration. Introduce dedicated helpers for PTE validation and event counting while refreshing the internal documentation. - "maple_tree: lock checking and clean ups" (Liam Howlett) Syzbot reports incorrectly blame memory management exit paths for locking bugs, maple tree erase operations risk allocation failures without gfp flags and internal documentation lacks clarity. Improve lock error detection, update docs, fix race and allocation edge cases and optimize erase allocations using a fallback to GFP_KERNEL | GFP_NOFAIL. * tag 'mm-stable-2026-08-26-15-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (172 commits) selftests/proc: make proc-maps-race work with READ_IMPLIES_EXEC memcg: move LRU size accounting on reparenting instead of copying it mm/vmscan: fix comment logic in balance_pgdat maple_tree: add helper mas_make_walkable() maple_tree: avoid extra gap calculation maple_tree: fix argument name in header maple_tree: change two GFP flags in tests maple_tree: document erase and allocations better maple_tree: avoid mas_erase() and mtree_erase() failures maple_tree: document that erase may use GFP_KERNEL for allocations maple_tree: catch race in mas_alloc_cyclic() maple_tree: add bulk parent set helper maple_tree: micro optimisation of mas_wr_store_type() maple_tree: optimise mas_wr_node_store() when not in rcu mode maple_tree: use prefetched value in mas_wr_store_type() maple_tree: clarify comments on mas_nomem() maple_tree: drop MAPLE_ALLOC_SLOTS maple_tree: drop dead code from mas_extend_spanning_null() maple_tree: documentation fix maple_tree: add write lock checking with lockdep sequence numbers ... |
||
|
Linus Torvalds
|
73e3f07100 |
NFS client updates for Linux 7.3
Highlights include:
Stable fixes:
- SunRPC: Use-after-free fixes for the sunrpc client code
- NFSv4: Delegation hash table leak
- lockd: NULL dereference on lockowner allocation failure
- SunRPC: Fix a handshake completion race in the TLS code
- NFSv4.1/pNFS: Fix an error sign checking issue when deciding whether
the layout is still in use, or can be returned.
- NFSv4.1: Fix a layout segment leak in pnfs_layout_process()
Other bugfixes:
- SunRPC: Fix a missing NULL check in the rpcbind client
- SunRPC: annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
- NFSv4: nfs_inode_set_delegation() error paths should return the delegation
- NFSv4: Use clear_and_wake_up_bit() in nfs_clear_invalid_mapping() and
the pNFS code.
- NFSv4: Fix the nfs4_alloc_client() error paths to free the IDR
allocation
- NFS: fix folio dereference before NULL check in nfs_inode_remove_request()
- NFS: Fix delayed delegation return
- NFSv4: Fix another state manager race with umount
- pNFS/blocklayout: Fix device leaks on parse failure
- pNFS: Avoid cancelling in-flight I/O during a layout recall if the
server doesn't require it
- NFSv4/flexfiles: report cancelled I/O as a layout error
- NFSv4/flexfiles: fix NULL dereference for NFSv4.0 data servers
- NFSv4: Fix incorrect argument passed to nfs4_delete_lease()
- NFSv3: Fix several symlink issues resulting from nfs_atomic_open_v23()
- NFSv4.1: Fix an uninitialised variable issue in the callback code
- NFSv4.2: fix LAYOUTSTATS send buffer exhaustion
Features and cleanups:
- NFSv4.2: Allow the server to specify that file data may not be cached
- NFS/localio: optimise I/O submission when when not doing memory reclaim
- NFS/localio: Remove duplicate wait code in nfs_local_commit
- NFSv4/flexfiles: support loosely coupled NFSv4.x data servers
- NFSv4/pnfs: key the data server cache on the NFS version
-----BEGIN PGP SIGNATURE-----
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0VxpAP9KSFbBnHU/DTq6zJ0xNeatZLBssrdkD1aPbHGsJPXukgEAgmo9tk0AgdJo
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Merge tag 'nfs-for-7.3-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Highlights include:
Stable fixes:
- Use-after-free fixes for the sunrpc client code
- Delegation hash table leak
- NULL dereference on lockowner allocation failure
- Fix a handshake completion race in the TLS code
- Fix an error sign checking issue when deciding whether the pNFS
layout is still in use, or can be returned
- Fix a layout segment leak in pnfs_layout_process()
Other bugfixes:
- Fix a missing NULL check in the rpcbind client
- annotate shared socket callbacks with READ_ONCE/WRITE_ONCE
- nfs_inode_set_delegation() error paths should return the delegation
- Use clear_and_wake_up_bit() in nfs_clear_invalid_mapping() and the
pNFS code.
- Fix the nfs4_alloc_client() error paths to free the IDR allocation
- fix folio dereference before NULL check in
nfs_inode_remove_request()
- Fix delayed delegation return
- Fix another state manager race with umount
- Fix device leaks on parse failure
- Avoid cancelling in-flight I/O during a layout recall if the server
doesn't require it
- flexfiles: report cancelled I/O as a layout error
- flexfiles: fix NULL dereference for NFSv4.0 data servers
- Fix incorrect argument passed to nfs4_delete_lease()
- Fix several symlink issues resulting from nfs_atomic_open_v23()
- Fix an uninitialised variable issue in the NFSv4.1 callback code
- fix LAYOUTSTATS send buffer exhaustion
Features and cleanups:
- NFSv4.2: Allow the server to specify that file data may not be cached
- localio: optimise I/O submission when when not doing memory reclaim
- localio: Remove duplicate wait code in nfs_local_commit
- flexfiles: support loosely coupled NFSv4.x data servers
- pNFS: key the data server cache on the NFS version"
* tag 'nfs-for-7.3-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (33 commits)
NFSv4.1: fix layout segment leak on the pnfs_layout_process() forget path
NFSv4/pnfs: key the data server cache on the NFS version
NFSv4.2: fix LAYOUTSTATS send buffer exhaustion
pNFS: Fix EBUSY check in pnfs_layout_need_return
NFSv4.1: zero referring call lists before decoding
nfs: fix ENXIO on O_CREAT open of existing symlink over NFSv3
SUNRPC: wait for in-flight client TLS handshake callback
NFSv4: Fix incorrect argument passed to nfs4_delete_lease() in nfs4_add_lease()
lockd: fix NULL dereference on lockowner allocation failure
NFS: fix delegation_hash_table leak when nfs4_server_common_setup() fails
NFSv4/flexfiles: support loosely coupled data servers
NFSv4/flexfiles: fix NULL dereference for NFSv4.0 data servers
NFSv4: pin the superblock for active state owners
sunrpc: fix use-after-free in __rpc_clnt_handle_event and __rpc_clnt_remove_pipedir
NFS/localio: issue commit inline when not in a memory-reclaim context
NFS/localio: remove dead FLUSH_SYNC handling from nfs_local_commit
NFS/localio: issue IO inline when not in a memory-reclaim context
NFS: Fix delayed delegation return list handling
NFS: Verify symlink inode before caching target
NFS: fix folio dereference before NULL check in nfs_inode_remove_request()
...
|
||
|
Linus Torvalds
|
85671b807f |
More power management updates for 7.3-rc1
- Fix a kernel panic during PMU unbind in the intel_rapl power capping
driver and sign-extend the PMU delta on counter wraparound in it to
avoid misreporting energy (Sumeet Pawnikar and Yifan Li)
- Unblock runtime PM when device prepare fails that was not done by
mistake (Shibo Zhu)
- Fix possible rate limit overflow on 32-bit systems in the schedutil
cpufreq governor (Hui Su)
- Consolidate HWP P-states initialization in the intel_pstate cpufreq
driver and make that driver avoid using the DESIRED_PERF HWP hint
when the Dynamic Efficiency Control (DEC) is enabled in the processor
to avoid inconsistent behavior (Rafael Wysocki)
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Merge tag 'pm-7.3-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki:
"These fix two issues in the intel_rapl power capping driver, fix a
potential issue in the schedutil cpufreq governor on 32-bit systems,
fix a runtime PM issue related to failing system suspend, and update
the intel_pstate cpufreq driver:
- Fix a kernel panic during PMU unbind in the intel_rapl power
capping driver and sign-extend the PMU delta on counter wraparound
in it to avoid misreporting energy (Sumeet Pawnikar and Yifan Li)
- Unblock runtime PM when device prepare fails that was not done by
mistake (Shibo Zhu)
- Fix possible rate limit overflow on 32-bit systems in the schedutil
cpufreq governor (Hui Su)
- Consolidate HWP P-states initialization in the intel_pstate cpufreq
driver and make that driver avoid using the DESIRED_PERF HWP hint
when the Dynamic Efficiency Control (DEC) is enabled in the
processor to avoid inconsistent behavior (Rafael Wysocki)"
* tag 'pm-7.3-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
powercap: intel_rapl: Fix kernel panic during PMU unbind
PM: sleep: Unblock runtime PM when device prepare fails
powercap: intel_rapl: Sign-extend the PMU delta on counter wraparound
cpufreq: intel_pstate: Avoid using DESIRED_PERF when DEC is enabled
cpufreq: intel_pstate: Consolidate HWP P-states initialization
cpufreq: schedutil: Fix rate limit overflow
|
||
|
Rafael J. Wysocki
|
76854b339b |
Merge branches 'pm-cpufreq' and 'pm-sleep'
Merge additional cpufreq updates and one update related to system sleep for 7.3-rc1: - Unblock runtime PM when device prepare fails that was not done by mistake (Shibo Zhu) - Fix possible rate limit overflow on 32-bit systems in the schedutil cpufreq governor (Hui Su) - Consolidate HWP P-states initialization in the intel_pstate cpufreq driver and make that driver avoid using the DESIRED_PERF HWP hint when the Dynamic Efficiency Control (DEC) is enabled in the processor to avoid inconsistent behavior (Rafael Wysocki) * pm-cpufreq: cpufreq: intel_pstate: Avoid using DESIRED_PERF when DEC is enabled cpufreq: intel_pstate: Consolidate HWP P-states initialization cpufreq: schedutil: Fix rate limit overflow * pm-sleep: PM: sleep: Unblock runtime PM when device prepare fails |
||
|
Liam R. Howlett (Oracle)
|
8f21098431 |
locking/lockdep: add sequence counter to held_lock
Add an 8 bit small sequence counter to the held_lock struct to detect if the lock as been dropped and reacquired. This is useful when a data structure depends on a constant locking context, but is not able to detect locking and unlocking of the lock through its own API. Since the __lock_unpin_lock() will no longer detect underflow by casting the unsigned int to a signed int, update the casting code to use a temp variable for calculations using a signed int. Link: https://lore.kernel.org/20260821192627.4085470-3-liam@infradead.org Signed-off-by: Liam R. Howlett (Oracle) <liam@infradead.org> Suggested-by: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Will Deacon <will@kernel.org> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Waiman Long <longman@redhat.com> Link: https://lore.kernel.org/all/h3tpnj5kzcrxms5picmimtkpg4aypcpip5wbd6bt2rpdj5k7eb@nhtzs3lefrkq/ Cc: Breno Leitao <leitao@debian.org> Cc: Chris Mason <clm@meta.com> Cc: Chuck Lever <cel@kernel.org> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Joe Perches <joe@perches.com> Cc: Rik van Riel <riel@surriel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Lorenzo Stoakes (ARM)
|
51943a18ad |
mm: provide vma_[flags_]is_cow_mapping() and remove is_cow_mapping()
All remaining callers of is_cow_mapping() are invoking it in the form of is_cow_mapping(vma->vm_flags) or an indirected version of this. Therefore, provide a helper - vma_is_cow_mapping() to directly test the VMA. Additionally provide a new helper vma_flags_is_cow_mapping() which performs the check using the new vma_flags_t type, and share this logic between vma_is_cow_mapping() and vma_desc_is_cow_mapping(). With these changes, no callers of is_cow_mapping() remain, so remove it. Also update the userland VMA tests to reflect the change. No functional change intended. [akpm@linux-foundation.org: fix kerneldoc comment typo, per Lorenzo] Link: https://lore.kernel.org/aob1goSSPH6sTN9y@gremlin Link: https://lore.kernel.org/20260813-b4-scalable-cow-virt-pgoff-v5-2-c21581c0c3c8@kernel.org Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Deucher <alexander.deucher@amd.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Baoquan He <baoquan.he@linux.dev> Cc: Barry Song <baohua@kernel.org> Cc: Boris Brezillon <boris.brezillon@collabora.com> Cc: Byungchul Park <byungchul@sk.com> Cc: Chengming Zhou <chengming.zhou@linux.dev> Cc: Chris Li <chrisl@kernel.org> Cc: Christan König <christian.koenig@amd.com> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Claudio Imbrenda <imbrenda@linux.ibm.com> Cc: Dave Airlie <airlied@gmail.com> Cc: Dev Jain <dev.jain@arm.com> Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Gregory Price (Meta) <gourry@gourry.net> Cc: Harry Yoo <harry@kernel.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Huang Ray <Ray.Huang@amd.com> Cc: "Huang, Ying" <ying.huang@linux.alibaba.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@linaro.org> Cc: Jan Kara <jack@suse.cz> Cc: Jann Horn <jannh@google.com> Cc: Janosch Frank <frankja@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Joshua Hahn <joshua.hahnjy@gmail.com> Cc: Kairui Song <kasong@tencent.com> Cc: Kees Cook <kees@kernel.org> Cc: Kemeng Shi <shikemeng@huaweicloud.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Liam R. Howlett <liam@infradead.org> Cc: Liviu Dudau <liviu.dudau@arm.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Marc Rutland <mark.rutland@arm.com> Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org> Cc: Matthew Auld <matthew.auld@intel.com> Cc: Matthew Brost <matthew.brost@intel.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Maxime Ripard <mripard@kernel.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: Namhyung kim <namhyung@kernel.org> Cc: Naoya Horiguchi <nao.horiguchi@gmail.com> Cc: Nhat Pham <nphamcs@gmail.com> Cc: Nico Pache <npache@redhat.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Pedro Falcato <pfalcato@suse.de> Cc: Peter Xu <peterx@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rakie Kim <rakie.kim@sk.com> Cc: Rik van Riel <riel@surriel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Steven Price <steven.price@arm.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Cc: Thomas Zimemrmann <tzimmermann@suse.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: xu xin <xu.xin16@zte.com.cn> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Linus Torvalds
|
2f43193b88 |
dma-mapping updates for Linux 7.3:
- swiotlb: added new configuration option for the default pool size
(Jagadeesh Pagadala) and reduced overhead for high watermark tracking
(chenhuguanshen)
- minor code cleanups and improvements (Vova Sharaienko, Honglei Huang
and Marek Szyprowski)
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mergetag object
|
||
|
Yao Kai
|
cf9c8aaea0 |
workqueue: Fix unbound pool lifetime for pending pwqs
KASAN reports a use-after-free of an unbound worker_pool in
node_activate_pending_pwq():
BUG: KASAN: slab-use-after-free in _raw_spin_trylock+0x6d/0x120
Read of size 4 at addr ffff8880089ce000 by task kworker/u22:0/318
CPU: 1 UID: 0 PID: 318 Comm: kworker/u22:0 Not tainted 7.2.0 #1 PREEMPT(lazy)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
Workqueue: 0x0 (flush-8:0)
Call Trace:
<TASK>
dump_stack_lvl+0x53/0x70
print_report+0xce/0x610
kasan_report+0xce/0x100
_raw_spin_trylock+0x6d/0x120
pwq_dec_nr_in_flight+0x4b4/0xcb0
process_one_work+0x921/0x11a0
worker_thread+0x4d0/0xd20
kthread+0x2de/0x3c0
ret_from_fork+0x3aa/0x620
ret_from_fork_asm+0x1a/0x30
</TASK>
Allocated by task 311:
alloc_pwq+0x439/0xca0
apply_wqattrs_prepare+0x75e/0xd10
apply_workqueue_attrs_locked+0x44/0xa0
wq_nice_store+0x350/0x450
Freed by task 0:
kfree+0x127/0x3b0
rcu_core+0x523/0x1780
handle_softirqs+0x1b3/0x610
Last potentially related work creation:
put_unbound_pool+0x3f3/0x7d0
pwq_release_workfn+0x494/0x8e0
kthread_worker_fn+0x1ff/0x790
Canceling the last inactive work skips pwq_dec_nr_active(), so an empty
pwq can remain on pending_pwqs when its refcnt reaches zero.
pwq_release_workfn() currently puts the pool before removing that pwq.
If this drops the last pool reference, the pool can be RCU-freed while
the pwq remains reachable, and node_activate_pending_pwq() may trylock
the freed pool->lock.
Remove the pwq from pending_pwqs before putting the pool.
Fixes:
|
||
|
Guopeng Zhang
|
6c37d7e074 |
cgroup/cpuset: Preserve boot-isolated CPUs on partition release
isolated_cpus tracks CPUs isolated with isolcpus= as well as CPUs in
isolated cpuset partitions. When an isolated partition is released,
isolated_cpus_update() removes its whole CPU mask. This also clears CPUs
which were already isolated at boot.
This can be reproduced on a cgroup v2 system booted with
isolcpus=domain,15:
cd /sys/fs/cgroup
echo +cpuset > cgroup.subtree_control
mkdir cpuset-repro
echo 15 > cpuset-repro/cpuset.cpus
echo isolated > cpuset-repro/cpuset.cpus.partition
echo member > cpuset-repro/cpuset.cpus.partition
cat cpuset.cpus.isolated
CPU 15 is absent before the change. It must remain in
cpuset.cpus.isolated after the partition is released.
Update isolated_cpus one CPU at a time and keep CPUs outside the
boot-time domain housekeeping mask isolated.
Fixes:
|
||
|
Alexander Graf
|
1476cca098 |
dma-contiguous: fix truncation of numa_cma / cma_pernuma sizes >= 2G
numa_cma=0:4G reserves nothing at all. dma_numa_cma_reserve() copies the
requested size into a local int before handing it to
cma_declare_contiguous_nid(), so 0x100000000 truncates to zero and the
loop skips the node silently. Both parameters are documented in
kernel-parameters.txt as nn[MG], so that is the syntax the documentation
invites.
Which bits survive decides what a request turns into: 4G, 8G and 16G
reserve nothing, 2G, 3G and 6G sign-extend into a size the allocator
rejects with a warning, and 5G quietly reserves 1G.
It reaches further than those parameters. On a CMA_SIZE_PERNUMA kernel
with no per-node parameter, dma_numa_cma_reserve() takes the per-node
size from the default area, so a plain cma=4G on a multi-node machine
feeds that size through the same local and loses every per-node area.
numa_cma_size[] and pernuma_size_bytes are both phys_addr_t, so use it
for the local too, and give early_numa_cma() separate variables for the
node id and the size while in there.
Fixes:
|
||
|
Peter Zijlstra
|
46094a7708 |
locking: Revert switching guards to _irq_{disable,enable}()
Revert commit |
||
|
Linus Torvalds
|
0a0d1d55da |
smp_call_function() torture-test updates:
* Count single_rpc offline failures in statistics output. * Make invoker threads actually wait for all threads to start. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEbK7UrM+RBIrCoViJnr8S83LZ+4wFAmqE5f8THHBhdWxtY2tA a2VybmVsLm9yZwAKCRCevxLzctn7jIB7D/9MgrSRbOAK+Kou/DoIDeNNcPtLV3hH Scuq6xwsIyvKKs4IhjtDrnilHI51OaPOH6boySPJQ02cC5D1mtXWZBedH6wcQCHS ItE4AJJD2Mr2yoy1ld3fFPOeLkgqK/3YfN5aMwNB+BmzW9ZmeAhxBZJACwyuj0OE J+9eIq3TUBqR4gtAprfbDQqXtKGdEfhq62WmJFvM0VVPVujYIDyfSh+1hnEl3yp6 dgb1c3Z2xfMEhp86rLQFgjBYNdgb9GrNb9wX2QEjb0vMw9N5Ky2+do2EprD5DWev B0ihHt2fAD4tZr2TubnXy5p8gCy2k3nILODmgfu69pS/LMcdIuBe4rRm1lXpjkDG gem1KHjT4nLWte9dI5+D8urwu5dZOJe99NNQDg/qZkVVdkJ9KWxwDx4azd3AKGnW qWZUKRks6GL8/SmRuVzQAaVHKtwFh44Wf9h4BoxLNC/dJxokC9+SH4XNUPIHdy5J BGhZSiAqmixtKGqXI6nshze88gHVwYIU3UukppyXkPmMih+S5dJzFlVB2gJVFaB9 lYxXIPVFr9uVNoV5zipCZUxtPW1jasfqth8u2fqxaBP6ChN/e36lWLhHqOLc7DPh WgNPQK6wTZnM6eL6qzWqE4A+Bfleaivyp3Ia3gpzyGGgxG0a/5P3m0+/KgPRX0Jm iaIKs/gamZErtA== =L89j -----END PGP SIGNATURE----- Merge tag 'scftorture.2026.08.18a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux Pull smp_call_function() torture-test updates from Paul McKenney: - Count single_rpc offline failures in statistics output - Make invoker threads actually wait for all threads to start * tag 'scftorture.2026.08.18a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: scftorture: Make invoker threads actually wait for all threads to start scftorture: Count single_rpc offline failures in statistics output |
||
|
Linus Torvalds
|
83684c4e4d |
RCU updates:
Make expedited grace periods expedite normal RCU callbacks
Miscellaneous fixes:
* Improve diagnostic output with character task states.
* Mark accesses to inform KCSAN of concurrency design.
* Move from kmalloc() to kmalloc_obj().
* Documentation updates.
* Improve handling of RCU deferred quiescent states.
* Clean up unused function arguments and structure fields.
* Reduce show_rcu_gp_kthreads() stack space.
Tasks RCU updates:
* Clean up after SRCU re-implementation of Tasks Trace RCU.
* Mark accesses to inform KCSAN of concurrency design.
* Add ->lazy_timer status to diagnostic output.
* Remove an unnecessary memory barrier.
* Fix a data race, courtesy of KCSAN.
* Documentation updates.
* Convert cond_resched_tasks_rcu_qs() from macro to static inline
function.
SRCU updates:
* Add Rust helpers for SRCU.
* Avoid losing queued work at cleanup_srcu_struct() time.
Torture-test updates:
* Preparation work for immediate RCU priority deboosting.
* Test RCU readers from real interrupt handlers (as opposed to softirq).
* Simplify code through use of cpumask_next_wrap().
* Improve diagnostic output with character task states.
* Add rcutorture.nwriters parameter to allow lightweight stall testing,
and rcutorture.stall_only to make doing so easier.
* Test an RCU Tasks Trace grace period implying an RCU grace period.
* Make RCU Tasks Trace torturing track reader batches.
* Fix a data race, courtesy of KCSAN.
* Plug a shuffle_tmp_mask memory leak on kthread spawn failure.
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Merge tag 'rcu.2026.08.18a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Paul McKenney:
"Make expedited grace periods expedite normal RCU callbacks
Miscellaneous fixes:
- Improve diagnostic output with character task states
- Mark accesses to inform KCSAN of concurrency design
- Move from kmalloc() to kmalloc_obj()
- Documentation updates
- Improve handling of RCU deferred quiescent states
- Clean up unused function arguments and structure fields
- Reduce show_rcu_gp_kthreads() stack space
Tasks RCU updates:
- Clean up after SRCU re-implementation of Tasks Trace RCU
- Mark accesses to inform KCSAN of concurrency design
- Add ->lazy_timer status to diagnostic output
- Remove an unnecessary memory barrier
- Fix a data race, courtesy of KCSAN
- Documentation updates
- Convert cond_resched_tasks_rcu_qs() from macro to static inline
function
SRCU updates:
- Add Rust helpers for SRCU
- Avoid losing queued work at cleanup_srcu_struct() time
Torture-test updates:
- Preparation work for immediate RCU priority deboosting
- Test RCU readers from real interrupt handlers (as opposed to
softirq)
- Simplify code through use of cpumask_next_wrap()
- Improve diagnostic output with character task states
- Add rcutorture.nwriters parameter to allow lightweight stall
testing, and rcutorture.stall_only to make doing so easier
- Test an RCU Tasks Trace grace period implying an RCU grace period
- Make RCU Tasks Trace torturing track reader batches
- Fix a data race, courtesy of KCSAN
- Plug a shuffle_tmp_mask memory leak on kthread spawn failure"
* tag 'rcu.2026.08.18a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (59 commits)
rcu: Add closing parenthesis in comment in rcu_read_unlock_strict()
rcutorture: Make {,s}rcu_read_delay() better handle forward-progress testing
rcutorture: Announce declining to forward-progress test
torture: Don't leak shuffle_tmp_mask when shuffler kthread fails to start
rcutorture: Use this_cpu_inc() for rcu_torture_count[] and rcu_torture_batch[]
rcutorture: Make RCU Tasks Trace track Reader Batches
rcutorture: Test RCU Tasks Trace GP implying RCU GP
rcutorture: Add a stall_only module parameter
rcutorture: Add nwriters module parameter
rcutorture: Use task_state_to_char() for task-state reporting
rcutorture: Use cpumask_next_wrap() in rcu_torture_preempt()
rcutorture: Test RCU readers from hardware interrupt handlers
rcutorture: Check for immediate deboosting at reader end
srcu: Queue sdp->work when the delay timer is successfully deleted
rcu-tasks: Convert cond_resched_tasks_rcu_qs() to static inline
rcu-tasks: Fix some comments for call_rcu_tasks() and call_rcu_tasks_rude()
rcu-tasks: Rename tasks_rcu_exit_srcu_stall_timer to tasks_rcu_exit_stall_timer
rcu: Mark interrupts-enabled accesses to rdp->cpu_no_qs.s
rcu: Reduce stack usage in show_rcu_gp_kthreads()
rcu: Mark accesses to ->rcu_urgent_qs and ->rcu_need_heavy_qs
...
|
||
|
Linus Torvalds
|
66ec24c5d7 |
s390 updates for 7.3 merge window
- Add a cpuidle driver with polling and enabled wait states using the existing CPU idle infrastructure and idle governor to improve latency for frequent sleep/wakeup cycles. Remove the obsolete tick delay heuristic and generic arch_needs_cpu() hook. Add the corresponding driver entry to MAINTAINERS - Add kCFI support using the generic support provided by Clang - Enable Clang CONTEXT_ANALYSIS for various architecture code and for char, PCI, CIO and virtio drivers. Add required lock annotations, exclude unsupported mm helpers and remove conditional PCI locking - Fix secure storage access exception handling and reintroduce DCACHE_WORD_ACCESS previously removed as a workaround - Fix cpum_cf perf crashes when CPUs are brought online while per-task events are active. Allocate and remove per-CPU counter data from CPU hotplug callbacks - Fix a deadlock when an s390dbf debug area is unregistered while one of its debugfs files is being written to - Fix MVIY_PERCPU() with binutils older than 2.39, where an assembler macro silently omitted an instruction needed to repair interrupted operations after CPU migration - Remove/replace cond_resched() calls which are no-ops with the supported s390 preemption models - Fix AP queue depth and maximum message length decoding according to the architecture. Current hardware is not affected, but future hardware could report values which were handled incorrectly - Reflect the configured CPU state in cpu_enabled_mask so deconfigured CPUs are not presented as available for onlining - Restore the vDSO GNU_EH_FRAME program header which was lost when the build switched to direct linker invocation, and mark it read-only - Add SCLP action qualifiers used by Spyre for card initialization, recoverable error and telemetry reporting - Move KMSAN interrupt flag helpers out of line to fix -Wstatic-in-inline build warnings - Use level-specific page table entry accessors for hugetlb entries and ptep_get() when accessing crashed kernel memory in kdump - Make forced AP bus rescans killable so that a user process blocked behind an ongoing scan can still be terminated with SIGKILL - Rework pkey ioctl error paths to remove duplicated cleanup code and avoid freeing error pointers - Allow the protected guest SWIOTLB buffer to be allocated outside the first 2GB. Also enable dynamic SWIOTLB growth and the coherent atomic pool fallback to improve I/O behavior when the initial pool is exhausted - Add program check statistics and spinlock contention tracepoints. Increase the lockdep chain capacity to keep lockdep enabled for complex code paths such as btrfs - Simplify IPL, trap and syscall code and remove the obsolete unistd_32.h generation entry -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEE3QHqV+H2a8xAv27vjYWKoQLXFBgFAmqLHuoACgkQjYWKoQLX FBhf2Qf+JlV+jQM1Lvn/Dj16vuQ77a4aP5C/OnLGMaTrrzbX420qU04yvC96v2Xu ux01aDU9VakonE74IT0NmrNo1VDUk8nSvIWUTB6GH7KvK76VEZN5Kkyn8TmeRmE0 bZ0Fg7MgnhwdYijFDiX9w4rLyirwxs7vkScdJdJd0iKEdoZHXojGSjPDvmSpXght FgCszt+YOqu9MMf9B5oGAl+P40mgPTlm6M+ygoe2dX7qPQBUHLbDPTgZiWnKdXi2 LPx0QPEha921ePDWrWz2HEqNetMfwGl12iertXddf1uzuK6LLObi0M5QrGw/ZbOy UJFM+AjFekTQyZPSunD4NWyCjglqrA== =XF7Y -----END PGP SIGNATURE----- Merge tag 's390-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Vasily Gorbik: - Add a cpuidle driver with polling and enabled wait states using the existing CPU idle infrastructure and idle governor to improve latency for frequent sleep/wakeup cycles. Remove the obsolete tick delay heuristic and generic arch_needs_cpu() hook. Add the corresponding driver entry to MAINTAINERS - Add kCFI support using the generic support provided by Clang - Enable Clang CONTEXT_ANALYSIS for various architecture code and for char, PCI, CIO and virtio drivers. Add required lock annotations, exclude unsupported mm helpers and remove conditional PCI locking - Fix secure storage access exception handling and reintroduce DCACHE_WORD_ACCESS previously removed as a workaround - Fix cpum_cf perf crashes when CPUs are brought online while per-task events are active. Allocate and remove per-CPU counter data from CPU hotplug callbacks - Fix a deadlock when an s390dbf debug area is unregistered while one of its debugfs files is being written to - Fix MVIY_PERCPU() with binutils older than 2.39, where an assembler macro silently omitted an instruction needed to repair interrupted operations after CPU migration - Remove/replace cond_resched() calls which are no-ops with the supported s390 preemption models - Fix AP queue depth and maximum message length decoding according to the architecture. Current hardware is not affected, but future hardware could report values which were handled incorrectly - Reflect the configured CPU state in cpu_enabled_mask so deconfigured CPUs are not presented as available for onlining - Restore the vDSO GNU_EH_FRAME program header which was lost when the build switched to direct linker invocation, and mark it read-only - Add SCLP action qualifiers used by Spyre for card initialization, recoverable error and telemetry reporting - Move KMSAN interrupt flag helpers out of line to fix -Wstatic-in-inline build warnings - Use level-specific page table entry accessors for hugetlb entries and ptep_get() when accessing crashed kernel memory in kdump - Make forced AP bus rescans killable so that a user process blocked behind an ongoing scan can still be terminated with SIGKILL - Rework pkey ioctl error paths to remove duplicated cleanup code and avoid freeing error pointers - Allow the protected guest SWIOTLB buffer to be allocated outside the first 2GB. Also enable dynamic SWIOTLB growth and the coherent atomic pool fallback to improve I/O behavior when the initial pool is exhausted - Add program check statistics and spinlock contention tracepoints. Increase the lockdep chain capacity to keep lockdep enabled for complex code paths such as btrfs - Simplify IPL, trap and syscall code and remove the obsolete unistd_32.h generation entry * tag 's390-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (59 commits) s390/percpu: Fix MVIY_PERCPU() with older binutils s390/debug: Fix deadlock during unregister s390/cpum_cf: Handle CPU hotplug via prepare/dead callbacks s390: Enable CONTEXT_ANALYSIS for various directories s390/mm: Add __context_unsafe() attribute to gmap helper functions s390/mm: Add __context_unsafe() attribute to do_secure_storage_access() s390/sysinfo: Add context analysis attributes s390/irqflags: Add out-of-line definitions of arch_local_irq_*() for KMSAN s390/virtio: Enable CONTEXT_ANALYSIS s390/cio: Enable CONTEXT_ANALYSIS s390/vfio_ccw: Add __must_hold() attribute to vfio_ccw_sch_quiesce() s390/pci: Enable CONTEXT_ANALYSIS s390/pci: Rework __zpci_event_availability() to remove conditional locking s390/pci: Rework __zpci_event_error() to remove conditional locking s390/char: Enable CONTEXT_ANALYSIS s390/con3215: Add __must_hold() attribute to raw3215_make_room() s390/ap: Fix MAPML computation s390/cio: Remove cond_resched() calls s390: Remove cond_resched() calls KVM: s390: Remove cond_resched() calls ... |
||
|
Linus Torvalds
|
91959a31a3 |
kho: make boot time huge page allocation work nicely with KHO
Today allocation of gigantic pages in HugeTLB cannot work reliably with KHO:
* HugeTLB allocates gigantic pages using memblock and autoscaling of KHO
scratch accounts for these allocations. When gigantic pages occupy half
of the memory of more, KHO fails to allocate its scratch memory.
* After kexec handover, memblock allocations exclusively use KHO scratch
that is not supposed to contain preserved memory. This essentially blocks
preservation of HugeTLB with gigantic pages.
Extend early memory pools available for KHO kernel with areas that are
guaranteed not to contain preserved memory.
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Merge tag 'liveupdate-v7.3-rc1-20260823' of git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux
Pull more liveupdate updates from Mike Rapoport:
"Make boot time huge page allocation work nicely with kexec handover.
Today allocation of gigantic pages in HugeTLB cannot work reliably
with kexec handover (KHO):
- HugeTLB allocates gigantic pages using memblock and autoscaling of
KHO scratch accounts for these allocations. When gigantic pages
occupy half of the memory of more, KHO fails to allocate its
scratch memory.
- After kexec handover, memblock allocations exclusively use KHO
scratch that is not supposed to contain preserved memory. This
essentially blocks preservation of HugeTLB with gigantic pages.
Extend early memory pools available for KHO kernel with areas that are
guaranteed not to contain preserved memory"
* tag 'liveupdate-v7.3-rc1-20260823' of git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux: (21 commits)
kho: exclude hugetlb memory from scratch size calculation
memblock: add memblock_reserved_hugetlb_size()
memblock: make HugeTLB bootmem allocation work with KHO
memblock: always include KHO headers
kho: extend scratch
mm/mm_init: don't rely on memblock to get KHO scratch migratetype
kho: initialize preserved memory map radix tree earlier
kho: initialize kho_scratch pointer earlier in boot
kho: expose kho_scratch_overlap() to kexec_handover.h
kho: add kho_radix_init_tree()
kho: allow destroying KHO radix tree
kho: allow early-boot usage of the KHO radix tree
kho: add data argument to radix walk callback
kho: add callback for table pages
kho: add a struct for radix callbacks
kho: move all memory retrieval logic to kho_mem_retrieve()
kho: store incoming radix tree in kho_in
kho: disallow wide keys in radix tree
kho: make radix max key width more obvious
kho: generalize radix tree APIs
...
|
||
|
Linus Torvalds
|
e5f9260615 |
mm.git review status for master..mm-nonmm-stable
Total patches: 95 Reviews/patch: 0.63 Reviewed rate: 56% Summary of patch series in this merge: - "ocfs2/dlm: bound peer-controlled lengths in the o2dlm" (Bryam Vargas): Validate and bound all input lengths and count fields in the o2dlm migration and recovery receive handlers to prevent memory corruption and kernel panics from malformed cluster messages - "ocfs2: validate xattr entry bounds" (Cen Zhang): Validate OCFS2 extended attribute entry name and value bounds during metadata reads to prevent out-of-range memory accesses during retrieval or listing operations. - "taskstats: fix cgroupstats invalid fd handling and add selftests" (Yiyang Chen): Return -EBADF when cgroupstats receives an invalid file descriptor to prevent caller hangs and misleading success ACKs. Add a kselftest to validate valid cgroup v1 queries and verify proper error handling across different Netlink flag combinations. - "misc lib/raid/ improvements v2" (Christoph Hellwig): Improve benchmark-based algorithm selection for the XOR and RAID6 libraries, add KUnit benchmark tests, and cleanup minor implementation details. - "ocfs2: cluster: o2hb_region_pin() fixes" (Joseph Qi): Fix sleeping-in-atomic, lock order inversion and error-path cleanup bugs in o2hb_region_pin() by releasing o2hb_live_lock across sleeping configfs_depend_item() calls and using unlocked variants from callback context. Ensure failed pin attempts properly decrement user counts and unpin partially initialized heartbeat regions to prevent memory leaks and unprotected states. - "lib/ucs2_string.c: fix out-of-bounds read in ucs2_strnlen()" (Vincent Mailhol) Fix an off-by-one which could cause an out-of-bounds read. - "ocfs2: harden heartbeat teardown races" (Cen Zhang): Fix two OCFS2 heartbeat/o2net teardown races found by KASAN. - "taskstats: tidy up the cpumask command path" *Bradley Morgan) make two small cleanups in kernel/taskstats.c. - "ocfs2: validate active orphan slots during inode read" (ZhengYuan Huang): Validate active ordinary and append-DIO orphan slots read from OCFS2 dinodes at the metadata boundary to prevent corrupted slot indices from causing out-of-bounds array accesses. - "ocfs2: bound-check both readdir re-validation scans" (Zhan Xusheng) Enforce strict boundary checks on directory entry record lengths and offset calculations during OCFS2 directory re-scans to prevent out-of-bounds memory reads and directory position corruption. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaoo38wAKCRDdBJ7gKXxA jnKuAP9tIUJoYIzxG7zr00qJj95gczgE0+GikN1wXfO9Cvh8QAEAqr5InWrANTBB l4qW3/o4hM9TlBdr84oT3RNnvBicuwA= =BY1d -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2026-08-22-16-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: - "ocfs2/dlm: bound peer-controlled lengths in the o2dlm" (Bryam Vargas) Validate and bound all input lengths and count fields in the o2dlm migration and recovery receive handlers to prevent memory corruption and kernel panics from malformed cluster messages - "ocfs2: validate xattr entry bounds" (Cen Zhang) Validate OCFS2 extended attribute entry name and value bounds during metadata reads to prevent out-of-range memory accesses during retrieval or listing operations. - "taskstats: fix cgroupstats invalid fd handling and add selftests" (Yiyang Chen) Return -EBADF when cgroupstats receives an invalid file descriptor to prevent caller hangs and misleading success ACKs. Add a kselftest to validate valid cgroup v1 queries and verify proper error handling across different Netlink flag combinations. - "misc lib/raid/ improvements v2" (Christoph Hellwig) Improve benchmark-based algorithm selection for the XOR and RAID6 libraries, add KUnit benchmark tests, and cleanup minor implementation details. - "ocfs2: cluster: o2hb_region_pin() fixes" (Joseph Qi) Fix sleeping-in-atomic, lock order inversion and error-path cleanup bugs in o2hb_region_pin() by releasing o2hb_live_lock across sleeping configfs_depend_item() calls and using unlocked variants from callback context. Ensure failed pin attempts properly decrement user counts and unpin partially initialized heartbeat regions to prevent memory leaks and unprotected states. - "lib/ucs2_string.c: fix out-of-bounds read in ucs2_strnlen()" (Vincent Mailhol) Fix an off-by-one which could cause an out-of-bounds read. - "ocfs2: harden heartbeat teardown races" (Cen Zhang) Fix two OCFS2 heartbeat/o2net teardown races found by KASAN. - "taskstats: tidy up the cpumask command path" *Bradley Morgan) make two small cleanups in kernel/taskstats.c. - "ocfs2: validate active orphan slots during inode read" (ZhengYuan Huang) Validate active ordinary and append-DIO orphan slots read from OCFS2 dinodes at the metadata boundary to prevent corrupted slot indices from causing out-of-bounds array accesses. - "ocfs2: bound-check both readdir re-validation scans" (Zhan Xusheng) Enforce strict boundary checks on directory entry record lengths and offset calculations during OCFS2 directory re-scans to prevent out-of-bounds memory reads and directory position corruption. * tag 'mm-nonmm-stable-2026-08-22-16-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (95 commits) mailmap: fix bouncing address for Taniya Das ocfs2: bound-check dir entries in the inline-data re-validation scan ocfs2: bound-check dir entries in the readdir re-validation scan squashfs: avoid thundering-herd cache wakeups prctl: fix PR_SET_MM_AUXV losing the forced AT_NULL terminator mailmap: update email address for Linfeng Sun lib/interval_tree: fix allocation warning messages checkpatch: add NOKPROBE_SYMBOL to the whitelist of lines that can occur immediately after functions Squashfs: check block offset is not negative signal: factor out the kernel reserved si_code check ocfs2: fix readdir position truncation on 32-bit kernels ocfs2: fix cached cluster count after suballocator reclaim ocfs2: fix circular locking dependency in ocfs2_init_acl() ocfs2: validate DIO orphan slot during inode read ocfs2: validate orphan slot during inode read selftests/prctl: fix non-anonymous VMA mapping in set-anon-vma-name test MAINTAINERS: add IRC and patchwork for LTP include/linux/list.h: mark list_add and __list_add as __always_inline tools/mm: prevent page_owner_sort from truncating input hung_task: update DETECT_HUNG_TASK_BLOCKER Kconfig help ... |
||
|
Linus Torvalds
|
2709dd5ae3 |
Misc scheduler fixes:
- Add missing cpus_read_lock locking to rebuild_sched_domains()
(Sebastian Andrzej Siewior)
- Fix division by zero bug in tg_cpus() that can be triggered
with empty cpusets (Jake Steinman)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2026-08-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
- Add missing cpus_read_lock locking to rebuild_sched_domains()
(Sebastian Andrzej Siewior)
- Fix division by zero bug in tg_cpus() that can be triggered with
empty cpusets (Jake Steinman)
* tag 'sched-urgent-2026-08-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Floor tg_cpus() at 1
sched/topology: Add a cpus_read_lock to rebuild_sched_domains()
|
||
|
Linus Torvalds
|
0d78592583 |
Miscellaneous futex fixes:
- Series to enforce that private futex owner shares the mm when
attaching. (Kyle Zeng, Thomas Gleixner)
- Fix race on the initial mm->futex.phash.ref allocation
(Hyunwoo Kim)
- Fix might_sleep() warning in futex_pivot_pending()
(Peter Zijlstra)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-urgent-2026-08-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull futex fixes from Ingo Molnar:
- Enforce that the private futex owner shares the mm when attaching
(Kyle Zeng, Thomas Gleixner)
- Fix race on the initial mm->futex.phash.ref allocation (Hyunwoo Kim)
- Fix might_sleep() warning in futex_pivot_pending() (Peter Zijlstra)
* tag 'locking-urgent-2026-08-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Fix might_sleep() warning in futex_pivot_pending()
futex: Fix race on the initial mm->futex.phash.ref allocation
futex: Clean up the redundant exit/exec functions
futex/pi: Plug private futex exec() race
futex: Sanitize and document task_struct::futex::state transitions
futex/pi: Reject cross-mm private futex owners
|
||
|
Linus Torvalds
|
81ed8bd71e |
- Fix timer debugobjects state corruption on CPU offlining
(Thomas Gleixner)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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mergetag object
|
||
|
Deepanshu Kartikey
|
372f853424 |
tracing: Fix use-after-free in trace_pipe read on sub-buffer order change
Writing to buffer_subbuf_size_kb calls ring_buffer_subbuf_order_set(),
which frees every sub-buffer of the ring buffer, including the reader
page, and replaces them with newly allocated ones.
Readers of trace_pipe hold pointers into those pages. ring_buffer_peek()
looks up an event under cpu_buffer->reader_lock but returns the event
pointer after dropping the lock, and peek_next_entry() then calls
ring_buffer_event_length() and ring_buffer_event_data() on it. If the
sub-buffer order is changed in that window, the reader dereferences
freed memory:
BUG: KASAN: use-after-free in ring_buffer_peek+0x3e0/0x430
Read of size 1 at addr ffff88802a4cf010 by task syz-executor989/6002
Freed by:
free_buffer_page kernel/trace/ring_buffer.c:398 [inline]
ring_buffer_subbuf_order_set+0x1325/0x18e0 kernel/trace/ring_buffer.c:7444
buffer_subbuf_size_write+0x182/0x280 kernel/trace/trace.c:8221
Take trace_access_lock(RING_BUFFER_ALL_CPUS) around the order change.
This is the lock trace_pipe readers already hold across their entire
peek-and-print loop, so the swap can no longer race with a reader that
is dereferencing a peeked event.
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260817140655.5694-1-kartikey406@gmail.com
Fixes:
|
||
|
Hui Su
|
649bc7df3e |
tracing: Fix crash passing ERR_PTR to kthread_stop()
event_test_stuff() calls kthread_run() and unconditionally passes the returned task_struct pointer to kthread_stop(). kthread_run() returns an error pointer such as ERR_PTR(-ENOMEM) when kthread creation fails, for example under memory pressure during the boot-time event self-test. kthread_stop() then dereferences the invalid pointer, crashing the kernel. Check the result of kthread_run() before passing it to kthread_stop(). Use WARN_ON() so that a failure to create the self-test thread does not go unnoticed, matching the ring-buffer self-test fix in commit |
||
|
Hui Su
|
a7318172aa |
tracing: Fix use-after-free with same-name named triggers
When two hist triggers on different events are registered with the same
name=, the second one reuses the first as named_data. Both are added to
tr->hist_vars by save_hist_vars() during event_hist_trigger_parse(),
because save_hist_vars() is called before event_trigger_register() while
the named reuse is only detected later, in hist_register_trigger().
In the named-data branch hist_register_trigger() then frees the second
histogram's hist_data via destroy_hist_data(), but never removes its
tr->hist_vars list entry, leaving a dangling pointer and leaking the
trace_array reference it holds.
A later hist trigger that references a variable makes find_var_file()
walk tr->hist_vars and dereference the freed hist_data. The bug is
reproducible from userspace by writing three hist triggers to tracefs:
cd /sys/kernel/tracing
echo 'hist:keys=common_pid:x=common_pid:name=mh' > events/sched/sched_switch/trigger
echo 'hist:keys=common_pid:x=common_pid:name=mh' > events/sched/sched_process_fork/trigger
echo 'hist:keys=common_pid:vals=$x' > events/sched/sched_process_exit/trigger
The third write panics the kernel:
BUG: KASAN: slab-use-after-free in find_var_file.part.0+0x272/0x290
Read of size 8 at addr ffff888001f8a0e0 by task sh/1
CPU: 1 UID: 0 PID: 1 Comm: sh Tainted: G D N
Call Trace:
find_var_file.part.0
find_event_var
parse_atom
parse_expr
__create_val_field
event_hist_trigger_parse
trigger_process_regex
event_trigger_write
vfs_write
ksys_write
do_syscall_64
entry_SYSCALL_64_after_hwframe
Allocated by task 1:
event_hist_trigger_parse
Freed by task 1:
hist_register_trigger+0x618/0xa30
event_hist_trigger_parse
The buggy address belongs to freed 2048-byte region
Oops: general protection fault ... RIP: find_var_file.part.0
Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
Fix by removing the hist_data from tr->hist_vars and releasing the
trace_array reference in the named-data branch of hist_register_trigger()
before freeing the hist_data.
Cc: stable@vger.kernel.org
Fixes:
|
||
|
Tejun Heo
|
cca061dccf |
sched_ext: Fix spurious aborts in scx_bpf_dsq_move() on ownership change races
scx_dsq_move() verifies that the task belongs to the calling scheduler
before taking any locks and aborts the scheduler on mismatch. The task can
lose the sched association at any point: It can run and fully exit, which
clears the association, or get rehomed to a different sub-sched. Both are
benign races, but the early ownership check escalates them into scheduler
aborts.
Move the ownership check below the cursor-lost check. Every ownership change
dequeues the task first, so a task that is still on the iterated DSQ under
the lock while owned elsewhere indicates a genuine violation and should
abort.
Also fix two stale comments still referencing sched_ext_free(), which has
been renamed to sched_ext_dead().
Fixes:
|
||
|
Vincent Donnefort
|
a9a01be283 |
tracing: Fix logged instance name on creation failure
When boot instance creation fails, the kernel incorrectly logs "(null)"
as the instance name because strsep() consumes curr_str entirely during
parsing.
Print the properly parsed name variable instead. And while at it log
the error code.
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260807085423.4175161-1-vdonnefort@google.com
Fixes:
|
||
|
Linus Torvalds
|
2626025102 |
livepatching changes for 7.3
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||
|
Linus Torvalds
|
2f0f6b0773 |
Modules changes for 7.3-rc1
- Remove unnecessary module::args. Nowadays, no parameter-handling code points into the module::args buffer. The last user of module::args in xtensa/simdisk is updated and the data is then removed. - Add Rust support for boolean parameters. This will initially be used by the Rust null block driver. - Fix clearing the current charp parameter value when setting a new one fails due to an allocation failure. - Improve the debugging code for kmod (request_module()) duplicates. Fix a potential use-after-free when waiting on a duplicate request and make several general improvements to the code. - Fix the symbol size returned when looking up a data symbol through kallsyms. - The remaining changes are smaller fixes and cleanups. -----BEGIN PGP SIGNATURE----- iQFkBAABCABOFiEEIduBR9MnFA82q/jtumpXJwqY6poFAmqG/rIbFIAAAAAABAAO bWFudTIsMi41KzEuMTIsMiwyFBxwZXRyLnBhdmx1QHN1c2UuY29tAAoJELpqVycK mOqaur8H/i1kJq+zQfUB6/ijvX4yRGXezX0O30iLJ2N/imVsnMe6xP2eqqFIb2Be r5gnCc8P1WRJrDIe3uMsQBpoWIxEpCJ0F+S6JXiFEdht66taco8ivpP4hJWGHerj dCIf7RA3JOFave/7mN4UsrSXtl3HUyrMXplYuycE/5l/pYUY06qXmetgpA2aWywu jVpnCW9I7OO55Tf8tto2X4h6TbXP7ukCnojnadFz+N8JlG2hs45CQYSl1wEzKaFv okqPWCHTexcWySaEbqWWogbzvzIL6lr9C+nKMzYggMDYH7TxMwfscvo4pmTO/nOx +EO4PArCenf+7nsV2wKl2YLbnbzM1oA= =p/Yx -----END PGP SIGNATURE----- Merge tag 'modules-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux Pull module updates from Petr Pavlu: - Remove unnecessary module::args. Nowadays, no parameter-handling code points into the module::args buffer. The last user of module::args in xtensa/simdisk is updated and the data is then removed - Add Rust support for boolean parameters. This will initially be used by the Rust null block driver - Fix clearing the current charp parameter value when setting a new one fails due to an allocation failure - Improve the debugging code for kmod (request_module()) duplicates. Fix a potential use-after-free when waiting on a duplicate request and make several general improvements to the code - Fix the symbol size returned when looking up a data symbol through kallsyms - Smaller fixes and cleanups * tag 'modules-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux: params: fix charp corruption on allocation failure module: validate string table section types module/dups: Clean up includes module/dups: Use strcmp() to compare module names module/dups: Use scope-based cleanup helpers module/dups: Avoid unnecessary kmod_dup_req allocations module/dups: Fix use-after-free in kmod_dup_req lifetime handling module/dups: Inform duplicate requests about the result directly rust: module_param: support bool parameters rust: module_param: return value by copy from `value` module: Remove unnecessary module::args xtensa/simdisk: Avoid referring to module::args module: Remove unused DISCARD_EH_FRAME definition from module.lds.S module: procfs: use matching type for accumulator in module_total_size() module: use strscpy() to copy module names in stats and dup tracking params: fix path of /sys/module/XYZ/parameters/ in comment module/kallsyms: fix nextval for data symbol lookup |
||
|
Linus Torvalds
|
21bd0802cd |
RDMA v7.3 merge window pull
Quite alot of buf fixes again:
- Assorted locking, bounds-checking, cleanup, and error-path fixes across
UCMA/CMA, bng_re, bnxt_re, cxgb4, EFA, ERDMA, HFI1, HNS, ionic, iRDMA,
mlx4/mlx5, RXE, SIW, SRP/SRPT, and iSER target.
- netlink report for max # of supported resources
- get_zeroed_page()/etc removal
- Robust udata for ionic
- Allow unique RDMA device names per network namespace
- Completion counters and v2 admit queue support for EFA
- UC QP support for MANA
- Completion timestamps for ionic
- Harden uverbs data validation and resource lifetime handling, fixing several core use-after-free conditions.
- bnxt_re toggle-page ownership and lifetime bug fixes
- dmabuf SRQ support for mlx5
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull RDMA updates from Jason Gunthorpe:
"About the normal size, still a lot of AI bug fixes and so on, but some
interesting new functionality too:
- Assorted locking, bounds-checking, cleanup, and error-path fixes
across UCMA/CMA, bng_re, bnxt_re, cxgb4, EFA, ERDMA, HFI1, HNS,
ionic, iRDMA, mlx4/mlx5, RXE, SIW, SRP/SRPT, and iSER target.
- netlink report for max # of supported resources
- get_zeroed_page()/etc removal
- Robust udata for ionic
- Allow unique RDMA device names per network namespace
- Completion counters and v2 admit queue support for EFA
- UC QP support for MANA
- Completion timestamps for ionic
- Harden uverbs data validation and resource lifetime handling,
fixing several core use-after-free conditions.
- bnxt_re toggle-page ownership and lifetime bug fixes
- dmabuf SRQ support for mlx5"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (160 commits)
RDMA/ucma: Allow path records to exactly fit the output buffer
RDMA/uverbs: Guard legacy bundles without method_elm
RDMA/efa: Add support for 128B admin v2 SQ entry
RDMA/efa: Generalize the admin SQ
RDMA/efa: Decouple admin command payload from admin header
RDMA/rxe: Fix OOB in free_rd_atomic_resources()
RDMA/cma: Fix WARNING in res_to_rt
RDMA/cxgb4: Free debugfs on registration failure
RDMA/cxgb4: Cancel reg_work before freeing device on remove
RDMA/ucma: Lock the handler in ucma_set_ib_path()
RDMA/ucma: Lock the handler in ucma_write_cm_event()
RDMA/erdma: restrict the driver to little-endian systems
RDMA/ionic: Embed counter driver data in rdma_counter allocation
RDMA/ionic: Cap eq_count to the eth driver's interrupt vector budget
RDMA/siw: Fix use-after-free in siw_accept()
IB/isert: post the full-feature receive buffers after session registration
IB/isert: delay the final Login Response until the session is registered
RDMA/srp: fix heap information leak on a truncated SRP_CRED_REQ
RDMA/erdma: Hold QP references for AE and CM processing
RDMA/erdma: Hold CQ references when processing EQ events
...
|
||
|
Linus Torvalds
|
35748ddd3b |
SCSI misc on 20260821
One new driver: leapraid (similar to mpi3mr but OK'd by Broadcom). The usual suspects for driver updates (ufs, qla2xxx, smartpqi, zfcp, fnic, ibmvfc) plus a few small core updates: a fix for an uninitialized sg list pad bytes plus the removal of the dma mask check for max sectors. The big update in the sd driver is mostly code refactoring for obscure error leg handling. Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> -----BEGIN PGP SIGNATURE----- iLgEABMIAGAWIQTnYEDbdso9F2cI+arnQslM7pishQUCaogFixsUgAAAAAAEAA5t YW51MiwyLjUrMS4xMiwyLDImHGphbWVzLmJvdHRvbWxleUBoYW5zZW5wYXJ0bmVy c2hpcC5jb20ACgkQ50LJTO6YrIW3+AEAk1xhTuoYYPb87dWVpo74D0KwOjw144uQ jxBbQRx3mV8A/1kzGC5/eGU5XcruUaU6DXcYE7KSb+5aqFdjcHhj1e8a =7IX1 -----END PGP SIGNATURE----- Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI updates from James Bottomley: "One new driver: leapraid (similar to mpi3mr but OK'd by Broadcom). The usual suspects for driver updates (ufs, qla2xxx, smartpqi, zfcp, fnic, ibmvfc) plus a few small core updates: a fix for an uninitialized sg list pad bytes plus the removal of the dma mask check for max sectors. The big update in the sd driver is mostly code refactoring for obscure error leg handling" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (195 commits) scsi: fnic: Fix built-in NVMe/FC build scsi: fnic: Fix invalid comparison for error scsi: core: Fill in DMA padding bytes in scsi_alloc_sgtables() scsi: zfcp: Enable CONTEXT_ANALYSIS scsi: zfcp: Add __must_hold() attribute to zfcp_qdio_sbal_get() scsi: fnic: Use GFP_ATOMIC for VLAN alloc under spinlock scsi: storvsc: Support manual scans for all Hyper-V targets scsi: sd: Fix sd_done() sense handling condition scsi: sd: Fix special_vec mempool leak when scsi_alloc_sgtables() fails scsi: sd: Fix error handling in sd_probe() after large pool creation failure scsi: leapraid: Add driver documentation scsi: leapraid: Add new SCSI driver scsi: ufs: Add support for the aggregated read query opcode scsi: ufs: Use unsigned types for the BSG query scsi: ibmvfc: Fix spelling mistake "Deleteing" -> "Deleting" scsi: qla2xxx: Update version to 12.00.00.2607b2 scsi: qla2xxx: Bound i2c->length in I2C bsg handlers scsi: qla2xxx: Zero SFP DMA buffer in FRU/I2C bsg handlers scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[] scsi: qla2xxx: Zero-init bsg stack buffers to avoid info leak ... |