Linus Torvalds [Thu, 30 Apr 2026 05:21:44 +0000 (22:21 -0700)]
Merge tag 'trace-v7.1-rc1' of git://git./linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
- Fix inverted check of registering the stats for branch tracing
When calling register_stat_tracer() which returns zero on success and
negative on error, the callers were checking the return of zero as an
error and printing a warning message. Because this was just a normal
printk() message and not a WARN(), it wasn't caught in any testing.
Fix the check to print the warning message when an error actually
happens.
- Fix a typo in a comment in tracepoint.h
- Limit the size of event probes to 3K in size
It is possible to create a dynamic event probe via the tracefs system
that is greater than the max size of an event that the ring buffer
can hold. This basically causes the event to become useless.
Limit the size of an event probe to be 3K as that should be large
enough to handle any dynamic events being created, and fits within
the PAGE_SIZE sub-buffers of the ring buffer.
* tag 'trace-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing/probes: Limit size of event probe to 3K
tracepoint: Fix typo in tracepoint.h comment
tracing: branch: Fix inverted check on stat tracer registration
Steven Rostedt [Tue, 28 Apr 2026 16:23:02 +0000 (12:23 -0400)]
tracing/probes: Limit size of event probe to 3K
There currently isn't a max limit an event probe can be. One could make an
event greater than PAGE_SIZE, which makes the event useless because if
it's bigger than the max event that can be recorded into the ring buffer,
then it will never be recorded.
A event probe should never need to be greater than 3K, so make that the
max size. As long as the max is less than the max that can be recorded
onto the ring buffer, it should be fine.
Cc: stable@vger.kernel.org
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Fixes:
93ccae7a22274 ("tracing/kprobes: Support basic types on dynamic events")
Link: https://patch.msgid.link/20260428122302.706610ba@gandalf.local.home
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Linus Torvalds [Wed, 29 Apr 2026 13:56:50 +0000 (06:56 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm
Pull kvm updates from Paolo Bonzini:
"On top of a lot of Arm fixes, this includes a massive rename of types
and variables in tools/testing/selftests/kvm - these were
unnecessarily different from what the kernel uses, so they're being
made consistent.
arm64:
- Allow tracing for non-pKVM, which was accidentally disabled when
the series was merged
- Rationalise the way the pKVM hypercall ranges are defined by using
the same mechanism as already used for the vcpu_sysreg enum
- Enforce that SMCCC function numbers relayed by the pKVM proxy are
actually compliant with the specification
- Fix a couple of feature to idreg mappings which resulted in the
wrong sanitisation being applied
- Fix the GICD_IIDR revision number field that could never been
written correctly by userspace
- Make kvm_vcpu_initialized() correctly use its parameter instead of
relying on the surrounding context
- Enforce correct ordering in __pkvm_init_vcpu(), plugging a
potential pin leak at the same time
- Move __pkvm_init_finalise() to a less dangerous spot, avoiding
future problems
- Restore functional userspace irqchip support after a four year
breakage (last functional kernel was 5.18...)
- Spelling fixes
Selftests:
- Rename types across all KVM selftests to more closely align with
types used in the kernel:
vm_vaddr_t -> gva_t
vm_paddr_t -> gpa_t
uint64_t -> u64
uint32_t -> u32
uint16_t -> u16
uint8_t -> u8
int64_t -> s64
int32_t -> s32
int16_t -> s16
int8_t -> s8
- Fix Loongarch compilation"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (31 commits)
KVM: selftests: Add check_steal_time_uapi() implementation for LoongArch
KVM: arm64: Wake-up from WFI when iqrchip is in userspace
KVM: arm64: Fix initialisation order in __pkvm_init_finalise()
KVM: arm64: Fix pin leak and publication ordering in __pkvm_init_vcpu()
KVM: arm64: Fix kvm_vcpu_initialized() macro parameter
KVM: arm64: Fix FEAT_SPE_FnE to use PMSIDR_EL1.FnE, not PMSVer
KVM: arm64: Fix typo in feature check comments
KVM: arm64: Fix FEAT_Debugv8p9 to check DebugVer, not PMUVer
KVM: arm64: Reject non compliant SMCCC function calls in pKVM
KVM: arm64: vgic: Fix IIDR revision field extracted from wrong value
KVM: selftests: Replace "paddr" with "gpa" throughout
KVM: selftests: Replace "u64 nested_paddr" with "gpa_t l2_gpa"
KVM: selftests: Replace "u64 gpa" with "gpa_t" throughout
KVM: selftests: Replace "vaddr" with "gva" throughout
KVM: selftests: Clarify that arm64's inject_uer() takes a host PA, not a guest PA
KVM: selftests: Rename translate_to_host_paddr() => translate_hva_to_hpa()
KVM: selftests: Rename vm_vaddr_populate_bitmap() => vm_populate_gva_bitmap()
KVM: selftests: Rename vm_vaddr_unused_gap() => vm_unused_gva_gap()
KVM: selftests: Drop "vaddr_" from APIs that allocate memory for a given VM
KVM: selftests: Use u8 instead of uint8_t
...
Linus Torvalds [Tue, 28 Apr 2026 23:26:11 +0000 (16:26 -0700)]
Merge tag 'sched_ext-for-7.1-rc1-fixes' of git://git./linux/kernel/git/tj/sched_ext
Pull sched_ext fixes from Tejun Heo:
"The merge window pulled in the cgroup sub-scheduler infrastructure,
and new AI reviews are accelerating bug reporting and fixing - hence
the larger than usual fixes batch:
- Use-after-frees during scheduler load/unload:
- The disable path could free the BPF scheduler while deferred
irq_work / kthread work was still in flight
- cgroup setter callbacks read the active scheduler outside the
rwsem that synchronizes against teardown
Fix both, and reuse the disable drain in the enable error paths so
the BPF JIT page can't be freed under live callbacks.
- Several BPF op invocations didn't tell the framework which runqueue
was already locked, so helper kfuncs that re-acquire the runqueue
by CPU could deadlock on the held lock
Fix the affected callsites, including recursive parent-into-child
dispatch.
- The hardlockup notifier ran from NMI but eventually took a
non-NMI-safe lock. Bounce it through irq_work.
- A handful of bugs in the new sub-scheduler hierarchy:
- helper kfuncs hard-coded the root instead of resolving the
caller's scheduler
- the enable error path tried to disable per-task state that had
never been initialized, and leaked cpus_read_lock on the way
out
- a sysfs object was leaked on every load/unload
- the dispatch fast-path used the root scheduler instead of the
task's
- a couple of CONFIG #ifdef guards were misclassified
- Verifier-time hardening: BPF programs of unrelated struct_ops types
(e.g. tcp_congestion_ops) could call sched_ext kfuncs - a semantic
bug and, once sub-sched was enabled, a KASAN out-of-bounds read.
Now rejected at load. Plus a few NULL and cross-task argument
checks on sched_ext kfuncs, and a selftest covering the new deny.
- rhashtable (Herbert): restore the insecure_elasticity toggle and
bounce the deferred-resize kick through irq_work to break a
lock-order cycle observable from raw-spinlock callers. sched_ext's
scheduler-instance hash is the first user of both.
- The bypass-mode load balancer used file-scope cpumasks; with
multiple scheduler instances now possible, those raced. Move to
per-instance cpumasks, plus a follow-up to skip tasks whose
recorded CPU is stale relative to the new owning runqueue.
- Smaller fixes:
- a dispatch queue's first-task tracking misbehaved when a parked
iterator cursor sat in the list
- the runqueue's next-class wasn't promoted on local-queue
enqueue, leaving an SCX task behind RT in edge cases
- the reference qmap scheduler stopped erroring on legitimate
cross-scheduler task-storage misses"
* tag 'sched_ext-for-7.1-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: (26 commits)
sched_ext: Fix scx_flush_disable_work() UAF race
sched_ext: Call wakeup_preempt() in local_dsq_post_enq()
sched_ext: Release cpus_read_lock on scx_link_sched() failure in root enable
sched_ext: Reject NULL-sch callers in scx_bpf_task_set_slice/dsq_vtime
sched_ext: Refuse cross-task select_cpu_from_kfunc calls
sched_ext: Align cgroup #ifdef guards with SUB_SCHED vs GROUP_SCHED
sched_ext: Make bypass LB cpumasks per-scheduler
sched_ext: Pass held rq to SCX_CALL_OP() for core_sched_before
sched_ext: Pass held rq to SCX_CALL_OP() for dump_cpu/dump_task
sched_ext: Save and restore scx_locked_rq across SCX_CALL_OP
sched_ext: Use dsq->first_task instead of list_empty() in dispatch_enqueue() FIFO-tail
sched_ext: Resolve caller's scheduler in scx_bpf_destroy_dsq() / scx_bpf_dsq_nr_queued()
sched_ext: Read scx_root under scx_cgroup_ops_rwsem in cgroup setters
sched_ext: Don't disable tasks in scx_sub_enable_workfn() abort path
sched_ext: Skip tasks with stale task_rq in bypass_lb_cpu()
sched_ext: Guard scx_dsq_move() against NULL kit->dsq after failed iter_new
sched_ext: Unregister sub_kset on scheduler disable
sched_ext: Defer scx_hardlockup() out of NMI
sched_ext: sync disable_irq_work in bpf_scx_unreg()
sched_ext: Fix local_dsq_post_enq() to use task's scheduler in sub-sched
...
Sheng Che Peng [Wed, 22 Apr 2026 02:18:19 +0000 (10:18 +0800)]
tracepoint: Fix typo in tracepoint.h comment
Change "my" to "may" in the description of subsystem configurations.
Link: https://patch.msgid.link/20260422021819.1788091-1-synte4028@gmail.com
Signed-off-by: Sheng Che Peng <synte4028@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Breno Leitao [Mon, 20 Apr 2026 13:25:09 +0000 (06:25 -0700)]
tracing: branch: Fix inverted check on stat tracer registration
init_annotated_branch_stats() and all_annotated_branch_stats() check the
return value of register_stat_tracer() with "if (!ret)", but
register_stat_tracer() returns 0 on success and a negative errno on
failure. The inverted check causes the warning to be printed on every
successful registration, e.g.:
Warning: could not register annotated branches stats
while leaving real failures silent. The initcall also returned a
hard-coded 1 instead of the actual error.
Invert the check and propagate ret so that the warning fires on real
errors and the initcall reports the correct status.
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: https://patch.msgid.link/20260420-tracing-v1-1-d8f4cd0d6af1@debian.org
Fixes:
002bb86d8d42 ("tracing/ftrace: separate events tracing and stats tracing engine")
Signed-off-by: Breno Leitao <leitao@debian.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cheng-Yang Chou [Tue, 28 Apr 2026 17:36:12 +0000 (01:36 +0800)]
sched_ext: Fix scx_flush_disable_work() UAF race
scx_flush_disable_work() calls irq_work_sync() followed by
kthread_flush_work() to ensure that the disable kthread work has
fully completed before bpf_scx_unreg() frees the SCX scheduler.
However, a concurrent scx_vexit() (e.g., triggered by a watchdog stall)
creates a race window between scx_claim_exit() and irq_work_queue():
CPU A (scx_vexit (watchdog)) CPU B (bpf_scx_unreg)
---- ----
scx_claim_exit()
atomic_try_cmpxchg(NONE->kind)
stack_trace_save()
vscnprintf()
scx_disable()
scx_claim_exit() -> FAIL
scx_flush_disable_work()
irq_work_sync() // no-op: not queued yet
kthread_flush_work() // no-op: not queued yet
kobject_put(&sch->kobj) -> free %sch
irq_work_queue() -> UAF on %sch
scx_disable_irq_workfn()
kthread_queue_work() -> UAF
The root cause is that CPU B's scx_flush_disable_work() returns after
syncing an irq_work that has not yet been queued, while CPU A is still
executing the code between scx_claim_exit() and irq_work_queue().
Loop until exit_kind reaches SCX_EXIT_DONE or SCX_EXIT_NONE, draining
disable_irq_work and disable_work in each pass. This ensures that any
work queued after the previous check is caught, while also correctly
handling cases where no disable was triggered (e.g., the
scx_sub_enable_workfn() abort path).
Fixes:
510a27055446 ("sched_ext: sync disable_irq_work in bpf_scx_unreg()")
Reported-by: https://sashiko.dev/#/patchset/20260424100221.32407-1-icheng%40nvidia.com
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Cheng-Yang Chou <yphbchou0911@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Kuba Piecuch [Tue, 28 Apr 2026 12:46:01 +0000 (12:46 +0000)]
sched_ext: Call wakeup_preempt() in local_dsq_post_enq()
There are several edge cases (see linked thread) where an IMMED task
can be left lingering on a local DSQ if an RT task swoops in at the
wrong time. All of these edge cases are due to rq->next_class being idle
even after dispatching a task to rq's local DSQ. We should bump
rq->next_class to &ext_sched_class as soon as we've inserted a task into
the local DSQ.
To optimize the common case of rq->next_class == &ext_sched_class,
only call wakeup_preempt() if rq->next_class is below EXT. If next_class
is EXT or above, wakeup_preempt() is a no-op anyway.
This lets us also simplify the preempt_curr() logic a bit since
wakeup_preempt() will call preempt_curr() for us if next_class is
below EXT.
Link: https://lore.kernel.org/all/DHZPHUFXB4N3.2RY28MUEWBNYK@google.com/
Signed-off-by: Kuba Piecuch <jpiecuch@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Linus Torvalds [Tue, 28 Apr 2026 01:36:47 +0000 (18:36 -0700)]
Merge tag 'xsa48x-7.1-tag' of git://git./linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
"XSA-485 and XSA-487 security patches"
* tag 'xsa48x-7.1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/privcmd: fix double free via VMA splitting
Buffer overflow in drivers/xen/sys-hypervisor.c
Linus Torvalds [Mon, 27 Apr 2026 23:51:27 +0000 (16:51 -0700)]
Merge tag 'cgroup-for-7.1-rc1-fixes' of git://git./linux/kernel/git/tj/cgroup
Pull cgroup fixes from Tejun Heo:
- Fix UAF race in psi pressure_write() against cgroup file release by
extending cgroup_mutex coverage and ordering of->priv access after
cgroup_kn_lock_live()
- Fix integer overflow in rdmacg_try_charge() when usage equals INT_MAX
by performing the increment in s64
- Fix asymmetric DL bandwidth accounting on cpuset attach rollback by
recording the CPU used by dl_bw_alloc() so cancel_attach() returns
the reservation to the same root domain
- Fix nr_dying_subsys_* race that briefly showed 0 in cgroup.stat after
rmdir by incrementing from kill_css() instead of offline_css()
- Typo fix in cgroup-v2 documentation
* tag 'cgroup-for-7.1-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
docs: cgroup: fix typo 'protetion' -> 'protection'
cgroup: Increment nr_dying_subsys_* from rmdir context
cgroup/cpuset: record DL BW alloc CPU for attach rollback
cgroup/rdma: fix integer overflow in rdmacg_try_charge()
sched/psi: fix race between file release and pressure write
Linus Torvalds [Mon, 27 Apr 2026 23:45:39 +0000 (16:45 -0700)]
Merge tag 'fs_for_v7.1-rc2' of git://git./linux/kernel/git/jack/linux-fs
Pull isofs and udf fixes from Jan Kara:
"Several isofs and udf fixes"
* tag 'fs_for_v7.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
docs: isofs: replace dead ECMA-119 FTP link
udf: reject descriptors with oversized CRC length
isofs: use QSTR_LEN() in isofs_cmp
isofs: validate block number from NFS file handle in isofs_export_iget
isofs: validate Rock Ridge CE continuation extent against volume size
Linus Torvalds [Mon, 27 Apr 2026 23:40:24 +0000 (16:40 -0700)]
Merge tag 'fsnotify_for_v7.1-rc2' of git://git./linux/kernel/git/jack/linux-fs
Pull fsnotify fixes from Jan Kara:
"Three fixes for fsnotify / fanotify"
* tag 'fsnotify_for_v7.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fsnotify: fix inode reference leak in fsnotify_recalc_mask()
fanotify: Fix spelling mistake "enforecement" -> "enforcement"
fanotify: fix false positive on permission events
Linus Torvalds [Mon, 27 Apr 2026 23:35:44 +0000 (16:35 -0700)]
Merge tag 'for-7.1-rc1-tag' of git://git./linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- space reservation fixes:
- correctly undo 'may_use' accounting for remap tree
- avoid double decrement of 'may_use' when submitting async io
- actually enable the shutdown ioctl callback (not just the superblock
ops)
- raid stripe tree fixes when deleting extents
- add missing error handling
- fix various incorrect values set
- fix transaction state when removing a directory, possibly leading to
EIO during log replay
- additional b-tree node key checks during metadata readahead
- error handling and transaction abort updates
* tag 'for-7.1-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: fix double-decrement of bytes_may_use in submit_one_async_extent()
btrfs: check return value of btrfs_partially_delete_raid_extent()
btrfs: handle -EAGAIN from btrfs_duplicate_item and refresh stale leaf pointer
btrfs: replace ASSERT with proper error handling in stripe lookup fallback
btrfs: fix wrong min_objectid in btrfs_previous_item() call
btrfs: fix raid stripe search missing entries at leaf boundaries
btrfs: copy devid in btrfs_partially_delete_raid_extent()
btrfs: handle unexpected free-space-tree key types
btrfs: fix missing last_unlink_trans update when removing a directory
btrfs: don't clobber errors in add_remap_tree_entries()
btrfs: enable shutdown ioctl for non-experimental builds
btrfs: apply first key check for readahead when possible
btrfs: abort transaction in do_remap_reloc_trans() on failure
btrfs: fix bytes_may_use leak in do_remap_reloc_trans()
btrfs: fix bytes_may_use leak in move_existing_remap()
Linus Torvalds [Mon, 27 Apr 2026 23:33:23 +0000 (16:33 -0700)]
Merge tag 'for-7.1/dm-fixes' of git://git./linux/kernel/git/device-mapper/linux-dm
Pull device mapper fix from Mikulas Patocka:
- fix metadata corruption in dm-thin
* tag 'for-7.1/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm-thin: fix metadata refcount underflow
Linus Torvalds [Mon, 27 Apr 2026 22:21:18 +0000 (15:21 -0700)]
Merge tag 'mailbox-v7.1' of git://git./linux/kernel/git/jassibrar/mailbox
Pull mailbox updates from Jassi Brar:
- core: fix NULL message handling and add API to query TX queue slots
- test: resolve concurrency bugs, dangling IRQs, and memory leaks
- dt-bindings: qcom: add Eliza IPCC
- mtk: fix address calculation and pointer handling bugs
- cix: resolve SCMI suspend timeouts
- misc memory allocation optimizations and cleanups
* tag 'mailbox-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox:
mailbox: mailbox-test: make data_ready a per-instance variable
mailbox: mailbox-test: initialize struct earlier
mailbox: mailbox-test: don't free the reused channel
mailbox: mailbox-test: handle channel errors consistently
mailbox: update kdoc for struct mbox_controller
mailbox: add sanity check for channel array
mailbox: mailbox-test: free channels on probe error
mailbox: prefix new constants with MBOX_
dt-bindings: mailbox: qcom-ipcc: Document the Eliza Inter-Processor Communication Controller
mailbox: cix: Add IRQF_NO_SUSPEND to mailbox interrupt
mailbox: Fix NULL message support in mbox_send_message()
mailbox: remove superfluous internal header
mailbox: correct kdoc title for mbox_bind_client
mailbox: test: really ignore optional memory resources
mailbox: exynos: drop superfluous mbox setting per channel
mailbox: mtk-cmdq: Fix CURR and END addr for task insert case
mailbox: mtk-vcp-mailbox: Fix the return value in mtk_vcp_mbox_xlate()
mailbox: hi6220: kzalloc + kcalloc to kzalloc
mailbox: rockchip: kzalloc + kcalloc to kzalloc
mailbox: add API to query available TX queue slots
Petr Vaněk [Sat, 25 Apr 2026 08:03:54 +0000 (10:03 +0200)]
docs: cgroup: fix typo 'protetion' -> 'protection'
Fix a small typo in the description of the memory_hugetlb_accounting
mount option.
Signed-off-by: Petr Vaněk <arkamar@atlas.cz>
Signed-off-by: Tejun Heo <tj@kernel.org>
Ziran Zhang [Sat, 25 Apr 2026 14:29:43 +0000 (22:29 +0800)]
docs: isofs: replace dead ECMA-119 FTP link
The original link is no longer valid. Replace it with the official
PDF of the 2nd edition. The new link points to the exact 2nd edition
that the existing comment in isofs.rst refers to.
Signed-off-by: Ziran Zhang <zhangcoder@yeah.net>
Link: https://patch.msgid.link/20260425142943.6809-1-zhangcoder@yeah.net
Signed-off-by: Jan Kara <jack@suse.cz>
Paolo Bonzini [Mon, 27 Apr 2026 08:24:41 +0000 (04:24 -0400)]
Merge tag 'kvm-x86-selftests_kernel_types-7.1' of https://github.com/kvm-x86/linux into HEAD
KVM selftests type renames for 7.1
Renames types across all KVM selftests to more closely align with types used
in the kernel:
vm_vaddr_t -> gva_t
vm_paddr_t -> gpa_t
uint64_t -> u64
uint32_t -> u32
uint16_t -> u16
uint8_t -> u8
int64_t -> s64
int32_t -> s32
int16_t -> s16
int8_t -> s8
Using the kernel's preferred types eliminates a source of friction for many
contributors, as the majority of KVM selftests contributions come from kernel
developers. The kernel names are also shorter, which allows for more concise
code, and in any many cases eliminates newlines thanks to shorter types and
parameter names.
Rename variables and parameters as well as types, e.g. gpa instead of paddr,
to again align with the kernel, and in a few cases to remove ambiguity, e.g.
where paddr is used to refer to a _host_ physical address.
Paolo Bonzini [Mon, 27 Apr 2026 08:24:34 +0000 (04:24 -0400)]
Merge tag 'kvmarm-fixes-7.1-1' of git://git./linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 7.1, take #1
- Allow tracing for non-pKVM, which was accidentally disabled when
the series was merged
- Rationalise the way the pKVM hypercall ranges are defined by using
the same mechanism as already used for the vcpu_sysreg enum
- Enforce that SMCCC function numbers relayed by the pKVM proxy are
actually compliant with the specification
- Fix a couple of feature to idreg mappings which resulted in the
wrong sanitisation being applied
- Fix the GICD_IIDR revision number field that could never been
written correctly by userspace
- Make kvm_vcpu_initialized() correctly use its parameter instead
of relying on the surrounding context
- Enforce correct ordering in __pkvm_init_vcpu(), plugging a
potential pin leak at the same time
- Move __pkvm_init_finalise() to a less dangerous spot, avoiding
future problems
- Restore functional userspace irqchip support after a four year
breakage (last functional kernel was 5.18...). This is obviously
ripe for garbage collection.
- ... and the usual lot of spelling fixes
Sean Christopherson [Mon, 20 Apr 2026 19:26:44 +0000 (12:26 -0700)]
KVM: selftests: Add check_steal_time_uapi() implementation for LoongArch
Define check_steal_time_uapi() for LoongArch so that the steal_time test
builds. Note, while LoongArch's steal_time_init() has some funky asserts,
none of the code is uniquely verifying KVM's uAPI.
Cc: Jiakai Xu <xujiakai2025@iscas.ac.cn>
Cc: Jiakai Xu <jiakaiPeanut@gmail.com>
Cc: Andrew Jones <andrew.jones@oss.qualcomm.com>
Cc: Anup Patel <anup@brainfault.org>
Cc: Tianrui Zhao <zhaotianrui@loongson.cn>
Cc: Bibo Mao <maobibo@loongson.cn>
Cc: Huacai Chen <chenhuacai@kernel.org>
Fixes:
40351ed924dd ("KVM: selftests: Refactor UAPI tests into dedicated function")
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-ID: <
20260420192644.
3892050-1-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Linus Torvalds [Sun, 26 Apr 2026 21:19:00 +0000 (14:19 -0700)]
Linux 7.1-rc1
Linus Torvalds [Sun, 26 Apr 2026 21:03:20 +0000 (14:03 -0700)]
Merge tag 'clk-for-linus' of git://git./linux/kernel/git/clk/linux
Pull clk fix from Stephen Boyd:
"One more fix for the merge window to avoid a boot hang on
Raspberry Pi 3B by marking the VEC clk critical so that it
doesn't get turned off and hang the bus"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: bcm: rpi: Mark VEC clock as CLK_IGNORE_UNUSED
Linus Torvalds [Sun, 26 Apr 2026 16:51:29 +0000 (09:51 -0700)]
Merge tag 'tsm-for-7.1' of git://git./linux/kernel/git/devsec/tsm
Pull PCIe TSP update from Dan Williams:
"A small update for the TSM core. It is arguably a fix and coming in
late as I have been offline the past few weeks:
- Drop class_create() for the 'tsm' class"
* tag 'tsm-for-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/devsec/tsm:
virt: coco: change tsm_class to a const struct
Linus Torvalds [Sun, 26 Apr 2026 00:04:15 +0000 (17:04 -0700)]
Merge tag 'kbuild-fixes-7.1-1' of git://git./linux/kernel/git/kbuild/linux
Pull Kbuild fixes from Nicolas Schier:
- builddeb - avoid recompiles for non-cross-compiles
Avoid triggering complete rebuilds for non-cross-compile Debian
package builds by only triggering the rebuild of host tools for
actual cross-compile builds
- Never respect CONFIG_WERROR / W=e to fixdep
Avoid spurious rebuilds of fixdep w/ and w/o -Werror during a single
kbuild invocation by never respecting CONFIG_WERROR for fixdep
* tag 'kbuild-fixes-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux:
kbuild: Never respect CONFIG_WERROR / W=e to fixdep
kbuild: builddeb - avoid recompiles for non-cross-compiles
Linus Torvalds [Sat, 25 Apr 2026 23:58:34 +0000 (16:58 -0700)]
Merge tag 'power-utilities-2026.04.25' of git://git./linux/kernel/git/lenb/linux
Pull power utility updates from Len Brown:
"x86_energy_perf_policy:
- Initial SoC Slider support
turbostat:
- Display HT siblings in cpu# order
- Add Module-ID column
- Print Core-ID and APIC-ID in hex
- Fix misc bugs"
* tag 'power-utilities-2026.04.25' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
tools/power x86_energy_perf_policy: Version 2026.04.25
tools/power x86_energy_perf_policy.8: Document SoC Slider Options
tools/power x86_energy_perf_policy: Enhances SoC Slider related checks
tools/power turbostat: v2026.04.21
tools/power turbostat: Process HT siblings in CPU order
tools/power turbostat: Show module_id column
tools/power turbostat: Print core_id and apic_id in hex
tools/power turbostat: Cleanup print helper functions
tools/power turbostat: Fix --cpu-set 1 regression on HT systems
tools/power turbostat: Fix --cpu-set 0 regression on HT systems
tools/power turbostat: Fix unrecognized option '-P'
tools/power turbostat: Fix AMD RAPL regression on big systems
tools/power/x86: Add SOC slider and platform profile support
Linus Torvalds [Sat, 25 Apr 2026 23:39:03 +0000 (16:39 -0700)]
Merge tag 'rtc-7.1' of git://git./linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"Subsystem:
- add data_race() in rtc_dev_poll()
Drivers:
- remove i2c_match_id usage
- abx80x: Disable alarm feature if no interrupt attached
- ti-k3: support resuming from IO DDR low power mode"
* tag 'rtc-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
rtc: abx80x: Disable alarm feature if no interrupt attached
rtc: ntxec: fix OF node reference imbalance
rtc: pic32: allow driver to be compiled with COMPILE_TEST
rtc: ti-k3: Add support to resume from IO DDR low power mode
rtc: cmos: Use platform_get_irq_optional() in cmos_platform_probe()
dt-bindings: rtc: add olpc,xo1-rtc to trivial-rtc
dt-bindings: rtc: sc2731: Add compatible for SC2730
rtc: add data_race() in rtc_dev_poll()
rtc: armada38x: zalloc + calloc to single allocation
dt-bindings: rtc: isl12026: convert to YAML schema
dt-bindings: rtc: microcrystal,rv3028: Allow to specify vdd-supply
rtc: max77686: convert to i2c_new_ancillary_device
dt-bindings: rtc: mpfs-rtc: permit resets
rtc: rx8025: Remove use of i2c_match_id()
rtc: rv8803: Remove use of i2c_match_id()
rtc: rs5c372: Remove use of i2c_match_id()
rtc: pcf2127: Remove use of i2c_match_id()
rtc: m41t80: Remove use of i2c_match_id()
rtc: abx80x: Remove use of i2c_match_id()
Linus Torvalds [Sat, 25 Apr 2026 23:20:52 +0000 (16:20 -0700)]
Merge tag 'for-next-tpm-7.1-rc1' of git://git./linux/kernel/git/jarkko/linux-tpmdd
Pull tpm updates from Jarkko Sakkinen:
"Here are the accumulated fixes for 7.1-rc1 and a single structural
change worth mentioning separately: Rafael's commit converting tpm_crb
from ACPI driver to a platform driver"
* tag 'for-next-tpm-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
tpm: tpm_tis: stop transmit if retries are exhausted
tpm: tpm_tis: add error logging for data transfer
tpm: avoid -Wunused-but-set-variable
tpm: Use kfree_sensitive() to free auth session in tpm_dev_release()
tpm2-sessions: Fix missing tpm_buf_destroy() in tpm2_read_public()
tpm: Fix auth session leak in tpm2_get_random() error path
tpm: i2c: atmel: fix block comment formatting
tpm_crb: Convert ACPI driver to a platform one
tpm: Make tcpci_pm_ops variable static const
Len Brown [Sat, 25 Apr 2026 18:26:32 +0000 (14:26 -0400)]
Merge branches 'turbostat' and 'x86_energy_perf_policy' into power-utilities
Len Brown [Sat, 25 Apr 2026 17:26:16 +0000 (13:26 -0400)]
tools/power x86_energy_perf_policy: Version 2026.04.25
Since v2025.11.22:
Initial SoC Slider support
SoC Slider is an SoC-wide power/performance policy setting.
On SoC Slider systems, EPP plays a diminished role.
Whitespace cleanup via: indent -npro -kr -i8 -ts8 -sob -l160 -ss -ncs -cp1
No functional changes
Signed-off-by: Len Brown <len.brown@intel.com>
Len Brown [Sat, 25 Apr 2026 16:10:54 +0000 (12:10 -0400)]
tools/power x86_energy_perf_policy.8: Document SoC Slider Options
x86_energy_perf_policy accesses the SoC Slider via standard
user/kernel APIs to the processor_thermal_soc_slider driver.
Machines that support SoC Slider largely use it instead of EPP,
which may continue to exist in a diminished role, or vanish entirely.
Signed-off-by: Len Brown <len.brown@intel.com>
Len Brown [Wed, 15 Apr 2026 19:12:29 +0000 (15:12 -0400)]
tools/power x86_energy_perf_policy: Enhances SoC Slider related checks
When processor_thermal_soc_slider is loaded, its slider
and offset modparams are visible. Check that the driver
actually registered the profile named "SoC Slider" before
reading or writing these modparams.
n.b. This utility allows writing the Slider and Offset modparams
even if the driver policy is not "balanced". Currently the
processor_thermal_soc_slider consults those modparams
only in "balanced" mode.
Signed-off-by: Len Brown <len.brown@intel.com>
Maíra Canal [Fri, 24 Apr 2026 15:34:52 +0000 (16:34 +0100)]
clk: bcm: rpi: Mark VEC clock as CLK_IGNORE_UNUSED
On Raspberry Pi 3B, the VEC clock is used by the VideoCore firmware
display driver, which remains active until the vc4 driver loads and
sends NOTIFY_DISPLAY_DONE. If this clock is disabled during boot, a bus
lockup happens and the firmware becomes unresponsive, causing a complete
system lockup.
Mark the VEC clock with CLK_IGNORE_UNUSED so it survives the unused
clock disablement and remains available until the vc4 driver takes over
display management.
Fixes:
672299736af6 ("clk: bcm: rpi: Manage clock rate in prepare/unprepare callbacks")
Reported-by: Mark Brown <broonie@kernel.org>
Closes: https://lore.kernel.org/r/
5f0bec08-f458-4fba-8bf3-
06817a100c4c@sirena.org.uk
Signed-off-by: Maíra Canal <mcanal@igalia.com>
Link: https://patch.msgid.link/20260401111416.562279-2-mcanal@igalia.com
Tested-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Brian Masney <bmasney@redhat.com> # Active contributor to clk
Reviewed-by: Stefan Wahren <wahrenst@gmx.net>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Linus Torvalds [Sat, 25 Apr 2026 14:48:33 +0000 (07:48 -0700)]
Merge tag 'fbdev-for-7.1-rc1-2' of git://git./linux/kernel/git/deller/linux-fbdev
Pull fbdev fixes from Helge Deller:
- request memory region before use (cobalt_lcdfb, clps711x-fb, hgafb)
- reference cleanups in failure path (offb, savage)
- a spelling fix (atyfb)
* tag 'fbdev-for-7.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
fbdev: hgafb: Request memory region before ioremap
fbdev: clps711x-fb: Request memory region for MMIO
fbdev: cobalt_lcdfb: Request memory region
fbdev: atyfb: Fix spelling mistake "enfore" -> "enforce"
fbdev: savage: fix probe-path EDID cleanup leaks
fbdev: offb: fix PCI device reference leak on probe failure
Linus Torvalds [Sat, 25 Apr 2026 14:44:26 +0000 (07:44 -0700)]
Merge tag 'for-linus' of git://git./linux/kernel/git/rmk/linux
Pull ARM updates from Russell King:
- fix a race condition handling PG_dcache_clean
- further cleanups for the fault handling, allowing RT to be enabled
- fixing nzones validation in adfs filesystem driver
- fix for module unwinding
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rmk/linux:
ARM: 9463/1: Allow to enable RT
ARM: 9472/1: fix race condition on PG_dcache_clean in __sync_icache_dcache()
ARM: 9471/1: module: fix unwind section relocation out of range error
fs/adfs: validate nzones in adfs_validate_bblk()
ARM: provide individual is_translation_fault() and is_permission_fault()
ARM: move FSR fault status definitions before fsr_fs()
ARM: use BIT() and GENMASK() for fault status register fields
ARM: move is_permission_fault() and is_translation_fault() to fault.h
ARM: move vmalloc() lazy-page table population
ARM: ensure interrupts are enabled in __do_user_fault()
Tejun Heo [Sat, 25 Apr 2026 00:31:36 +0000 (14:31 -1000)]
sched_ext: Release cpus_read_lock on scx_link_sched() failure in root enable
scx_root_enable_workfn() takes cpus_read_lock() before
scx_link_sched(sch), but the `if (ret) goto err_disable` on failure
skips the matching cpus_read_unlock() - all other err_disable gotos
along this path drop the lock first.
scx_link_sched() only returns non-zero on the sub-sched path
(parent != NULL), so the leak path is unreachable via the root
caller today. Still, the unwind is out of line with the surrounding
paths.
Drop cpus_read_lock() before goto err_disable.
v2: Correct Fixes: tag (Andrea Righi).
Fixes:
25037af712eb ("sched_ext: Add rhashtable lookup for sub-schedulers")
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Tejun Heo [Sat, 25 Apr 2026 00:31:36 +0000 (14:31 -1000)]
sched_ext: Reject NULL-sch callers in scx_bpf_task_set_slice/dsq_vtime
scx_prog_sched(aux) returns NULL for TRACING / SYSCALL BPF progs that
have no struct_ops association when the root scheduler has sub_attach
set. scx_bpf_task_set_slice() and scx_bpf_task_set_dsq_vtime() pass
that NULL into scx_task_on_sched(sch, p), which under
CONFIG_EXT_SUB_SCHED is rcu_access_pointer(p->scx.sched) == sch. For
any non-scx task p->scx.sched is NULL, so NULL == NULL returns true
and the authority gate is bypassed - a privileged but
non-struct_ops-associated prog can poke p->scx.slice /
p->scx.dsq_vtime on arbitrary tasks.
Reject !sch up front so the gate only admits callers with a resolved
scheduler.
Fixes:
245d09c594ea ("sched_ext: Enforce scheduler ownership when updating slice and dsq_vtime")
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Tejun Heo [Sat, 25 Apr 2026 00:31:36 +0000 (14:31 -1000)]
sched_ext: Refuse cross-task select_cpu_from_kfunc calls
select_cpu_from_kfunc() skipped pi_lock for @p when called from
ops.select_cpu() or another rq-locked SCX op, assuming the held lock
protects @p. scx_bpf_select_cpu_dfl() / __scx_bpf_select_cpu_and() accept an
arbitrary KF_RCU task_struct, so a caller in e.g. ops.select_cpu(p1) or
ops.enqueue(p1) can pass some other p2 - the held pi_lock / rq lock is p1's,
not p2's - and reading p2->cpus_ptr / nr_cpus_allowed races with
set_cpus_allowed_ptr() and migrate_disable_switch() on another CPU.
Abort the scheduler on cross-task calls in both branches: for
ops.select_cpu() use scx_kf_arg_task_ok() to verify @p is the wake-up
task recorded in current->scx.kf_tasks[] by SCX_CALL_OP_TASK_RET();
for other rq-locked SCX ops compare task_rq(p) against scx_locked_rq().
v2: Switch the in_select_cpu cross-task check from direct_dispatch_task
comparison to scx_kf_arg_task_ok(). The former spuriously rejects when
ops.select_cpu() calls scx_bpf_dsq_insert() first, then calls
scx_bpf_select_cpu_*() on the same task. (Andrea Righi)
Fixes:
0022b328504d ("sched_ext: Decouple kfunc unlocked-context check from kf_mask")
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Andrea Righi <arighi@nvidia.com>
Tejun Heo [Sat, 25 Apr 2026 00:31:36 +0000 (14:31 -1000)]
sched_ext: Align cgroup #ifdef guards with SUB_SCHED vs GROUP_SCHED
Two EXT_GROUP_SCHED/SUB_SCHED guards are misclassified:
- scx_root_enable_workfn()'s cgroup_get(cgrp) and the err_put_cgrp unwind
in scx_alloc_and_add_sched() are under `#if GROUP || SUB`, but the
matching cgroup_put() in scx_sched_free_rcu_work() is inside `#ifdef SUB`
only (via sch->cgrp, stored only under SUB). GROUP-only would leak a
reference on every root-sched enable.
- sch_cgroup() / set_cgroup_sched() live under `#if GROUP || SUB` but touch
SUB-only fields (sch->cgrp, cgroup->scx_sched). GROUP-only wouldn't
compile.
GROUP needs CGROUP_SCHED; SUB needs only CGROUPS. CGROUPS=y/CGROUP_SCHED=n
gives the reachable GROUP=n, SUB=y combination; GROUP=y, SUB=n isn't
reachable today (SUB is def_bool y under CGROUPS). Neither miscategorization
triggers a real bug in any reachable config, but keep the guards honest:
- Narrow cgroup_get and err_put_cgrp to `#ifdef SUB` (matches the free-side
put).
- Move sch_cgroup() and set_cgroup_sched() to a separate `#ifdef SUB` block
with no-op stubs for the !SUB case; keep root_cgroup() and scx_cgroup_{
lock,unlock}() under `#if GROUP || SUB` since those only need cgroup core.
Fixes:
ebeca1f930ea ("sched_ext: Introduce cgroup sub-sched support")
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Tejun Heo [Sat, 25 Apr 2026 00:31:36 +0000 (14:31 -1000)]
sched_ext: Make bypass LB cpumasks per-scheduler
scx_bypass_lb_{donee,resched}_cpumask were file-scope statics shared by all
scheduler instances. With CONFIG_EXT_SUB_SCHED, multiple sched instances
each arm their own bypass_lb_timer; concurrent bypass_lb_node() calls RMW
the global cpumasks with no lock, corrupting donee/resched decisions.
Move the cpumasks into struct scx_sched, allocate them alongside the timer
in scx_alloc_and_add_sched(), free them in scx_sched_free_rcu_work().
Fixes:
95d1df610cdc ("sched_ext: Implement load balancer for bypass mode")
Cc: stable@vger.kernel.org # v6.19+
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Tejun Heo [Sat, 25 Apr 2026 00:31:36 +0000 (14:31 -1000)]
sched_ext: Pass held rq to SCX_CALL_OP() for core_sched_before
scx_prio_less() runs from core-sched's pick_next_task() path with rq
locked but invokes ops.core_sched_before() with NULL locked_rq, leaving
scx_locked_rq_state NULL. If the BPF callback calls a kfunc that
re-acquires rq based on scx_locked_rq() - e.g. scx_bpf_cpuperf_set(cpu)
- it re-acquires the already-held rq.
Pass task_rq(a).
Fixes:
7b0888b7cc19 ("sched_ext: Implement core-sched support")
Cc: stable@vger.kernel.org # v6.12+
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Tejun Heo [Sat, 25 Apr 2026 00:31:36 +0000 (14:31 -1000)]
sched_ext: Pass held rq to SCX_CALL_OP() for dump_cpu/dump_task
scx_dump_state() walks CPUs with rq_lock_irqsave() held and invokes
ops.dump_cpu / ops.dump_task with NULL locked_rq, leaving
scx_locked_rq_state NULL. If the BPF callback calls a kfunc that
re-acquires rq based on scx_locked_rq() - e.g. scx_bpf_cpuperf_set(cpu)
- it re-acquires the already-held rq.
Pass the held rq to SCX_CALL_OP(). Thread it into scx_dump_task() too.
The pre-loop ops.dump call runs before rq_lock_irqsave() so keeps
rq=NULL.
Fixes:
07814a9439a3 ("sched_ext: Print debug dump after an error exit")
Cc: stable@vger.kernel.org # v6.12+
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Tejun Heo [Sat, 25 Apr 2026 00:31:36 +0000 (14:31 -1000)]
sched_ext: Save and restore scx_locked_rq across SCX_CALL_OP
SCX_CALL_OP{,_RET}() unconditionally clears scx_locked_rq_state to NULL on
exit. Correct at the top level, but ops can recurse via
scx_bpf_sub_dispatch(): a parent's ops.dispatch calls the helper, which
invokes the child's ops.dispatch under another SCX_CALL_OP. When the inner
call returns, the NULL clobbers the outer's state. The parent's BPF then
calls kfuncs like scx_bpf_cpuperf_set() which read scx_locked_rq()==NULL and
re-acquire the already-held rq.
Snapshot scx_locked_rq_state on entry and restore on exit. Rename the rq
parameter to locked_rq across all SCX_CALL_OP* macros so the snapshot local
can be typed as 'struct rq *' without colliding with the parameter token in
the expansion. SCX_CALL_OP_TASK{,_RET}() and SCX_CALL_OP_2TASKS_RET() funnel
through the two base macros and inherit the fix.
Fixes:
4f8b122848db ("sched_ext: Add basic building blocks for nested sub-scheduler dispatching")
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Tejun Heo [Sat, 25 Apr 2026 00:31:35 +0000 (14:31 -1000)]
sched_ext: Use dsq->first_task instead of list_empty() in dispatch_enqueue() FIFO-tail
dispatch_enqueue()'s FIFO-tail path used list_empty(&dsq->list) to decide
whether to set dsq->first_task on enqueue. dsq->list can contain parked BPF
iterator cursors (SCX_DSQ_LNODE_ITER_CURSOR), so list_empty() is not a
reliable "no real task" check. If the last real task is unlinked while a
cursor is parked, first_task becomes NULL; the next FIFO-tail enqueue then
sees list_empty() == false and skips the first_task update, leaving
scx_bpf_dsq_peek() returning NULL for a non-empty DSQ.
Test dsq->first_task directly, which already tracks only real tasks and is
maintained under dsq->lock.
Fixes:
44f5c8ec5b9a ("sched_ext: Add lockless peek operation for DSQs")
Cc: stable@vger.kernel.org # v6.19+
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Cc: Ryan Newton <newton@meta.com>
Tejun Heo [Sat, 25 Apr 2026 00:31:35 +0000 (14:31 -1000)]
sched_ext: Resolve caller's scheduler in scx_bpf_destroy_dsq() / scx_bpf_dsq_nr_queued()
scx_bpf_create_dsq() resolves the calling scheduler via scx_prog_sched(aux)
and inserts the new DSQ into that scheduler's dsq_hash. Its inverse
scx_bpf_destroy_dsq() and the query helper scx_bpf_dsq_nr_queued() were
hard-coded to rcu_dereference(scx_root), so a sub-scheduler could only
destroy or query DSQs in the root scheduler's hash - never its own. If the
root had a DSQ with the same id, the sub-sched silently destroyed it and the
root aborted on the next dispatch ("invalid DSQ ID 0x0..").
Take a const struct bpf_prog_aux *aux via KF_IMPLICIT_ARGS and resolve the
scheduler with scx_prog_sched(aux), matching scx_bpf_create_dsq().
Fixes:
ebeca1f930ea ("sched_ext: Introduce cgroup sub-sched support")
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Tejun Heo [Sat, 25 Apr 2026 00:31:35 +0000 (14:31 -1000)]
sched_ext: Read scx_root under scx_cgroup_ops_rwsem in cgroup setters
scx_group_set_{weight,idle,bandwidth}() cache scx_root before acquiring
scx_cgroup_ops_rwsem, so the pointer can be stale by the time the op runs.
If the loaded scheduler is disabled and freed (via RCU work) and another is
enabled between the naked load and the rwsem acquire, the reader sees
scx_cgroup_enabled=true (the new scheduler's) but dereferences the freed one
- UAF on SCX_HAS_OP(sch, ...) / SCX_CALL_OP(sch, ...).
scx_cgroup_enabled is toggled only under scx_cgroup_ops_rwsem write
(scx_cgroup_{init,exit}), so reading scx_root inside the rwsem read section
correlates @sch with the enabled snapshot.
Fixes:
a5bd6ba30b33 ("sched_ext: Use cgroup_lock/unlock() to synchronize against cgroup operations")
Cc: stable@vger.kernel.org # v6.18+
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Tejun Heo [Sat, 25 Apr 2026 00:31:35 +0000 (14:31 -1000)]
sched_ext: Don't disable tasks in scx_sub_enable_workfn() abort path
scx_sub_enable_workfn()'s prep loop calls __scx_init_task(sch, p, false)
without transitioning task state, then sets SCX_TASK_SUB_INIT. If prep fails
partway, the abort path runs __scx_disable_and_exit_task(sch, p) on the
marked tasks. Task state is still the parent's ENABLED, so that dispatches
to the SCX_TASK_ENABLED arm and calls scx_disable_task(sch, p) - i.e.
child->ops.disable() - for tasks on which child->ops.enable() never ran. A
BPF sub-scheduler allocating per-task state in enable/freeing in disable
would operate on uninitialized state.
The dying-task branch in scx_disable_and_exit_task() has the same problem,
and scx_enabling_sub_sched was cleared before the abort cleanup loop - a
task exiting during cleanup tripped the WARN and skipped both ops.exit_task
and the SCX_TASK_SUB_INIT clear, leaking per-task resources and leaving the
task stuck.
Introduce scx_sub_init_cancel_task() that calls ops.exit_task with
cancelled=true - matching what the top-level init path does when init_task
itself returns -errno. Use it in the abort loop and in the dying-task
branch. scx_enabling_sub_sched now stays set until the abort loop finishes
clearing SUB_INIT, so concurrent exits hitting the dying-task branch can
still find @sch. That branch also clears SCX_TASK_SUB_INIT unconditionally
when seen, leaving the task unmarked even if the WARN fires.
Fixes:
337ec00b1d9c ("sched_ext: Implement cgroup sub-sched enabling and disabling")
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Tejun Heo [Sat, 25 Apr 2026 00:31:35 +0000 (14:31 -1000)]
sched_ext: Skip tasks with stale task_rq in bypass_lb_cpu()
bypass_lb_cpu() transfers tasks between per-CPU bypass DSQs without
migrating them - task_cpu() only updates when the donee later consumes the
task via move_remote_task_to_local_dsq(). If the LB timer fires again before
consumption and the new DSQ becomes a donor, @p is still on the previous CPU
and task_rq(@p) != donor_rq. @p can't be moved without its own rq locked.
Skip such tasks.
Fixes:
95d1df610cdc ("sched_ext: Implement load balancer for bypass mode")
Cc: stable@vger.kernel.org # v6.19+
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Tejun Heo [Sat, 25 Apr 2026 00:31:35 +0000 (14:31 -1000)]
sched_ext: Guard scx_dsq_move() against NULL kit->dsq after failed iter_new
bpf_iter_scx_dsq_new() clears kit->dsq on failure and
bpf_iter_scx_dsq_{next,destroy}() guard against that. scx_dsq_move() doesn't -
it dereferences kit->dsq immediately, so a BPF program that calls
scx_bpf_dsq_move[_vtime]() after a failed iter_new oopses the kernel.
Return false if kit->dsq is NULL.
Fixes:
4c30f5ce4f7a ("sched_ext: Implement scx_bpf_dispatch[_vtime]_from_dsq()")
Cc: stable@vger.kernel.org # v6.12+
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Tejun Heo [Sat, 25 Apr 2026 00:31:35 +0000 (14:31 -1000)]
sched_ext: Unregister sub_kset on scheduler disable
When ops.sub_attach is set, scx_alloc_and_add_sched() creates sub_kset as a
child of &sch->kobj, which pins the parent with its own reference. The
disable paths never call kset_unregister(), so the final kobject_put() in
bpf_scx_unreg() leaves a stale reference and scx_kobj_release() never runs,
leaking the whole struct scx_sched on every load/unload cycle.
Unregister sub_kset in scx_root_disable() and scx_sub_disable() before
kobject_del(&sch->kobj).
Fixes:
ebeca1f930ea ("sched_ext: Introduce cgroup sub-sched support")
Reported-by: Chris Mason <clm@meta.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Tejun Heo [Fri, 24 Apr 2026 20:14:32 +0000 (10:14 -1000)]
sched_ext: Defer scx_hardlockup() out of NMI
scx_hardlockup() runs from NMI and eventually calls scx_claim_exit(),
which takes scx_sched_lock. scx_sched_lock isn't NMI-safe and grabbing
it from NMI context can lead to deadlocks.
The hardlockup handler is best-effort recovery and the disable path it
triggers runs off of irq_work anyway. Move the handle_lockup() call into
an irq_work so it runs in IRQ context.
Fixes:
ebeca1f930ea ("sched_ext: Introduce cgroup sub-sched support")
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Linus Torvalds [Fri, 24 Apr 2026 22:17:23 +0000 (15:17 -0700)]
Merge tag 'trace-ring-buffer-v7.1-3' of git://git./linux/kernel/git/trace/linux-trace
Pull ring-buffer fix from Steven Rostedt:
- Fix accounting of persistent ring buffer rewind
On boot up, the head page is moved back to the earliest point of the
saved ring buffer. This is because the ring buffer being read by user
space on a crash may not save the part it read. Rewinding the head
page back to the earliest saved position helps keep those events from
being lost.
The number of events is also read during boot up and displayed in the
stats file in the tracefs directory. It's also used for other
accounting as well. On boot up, the "reader page" is accounted for
but a rewind may put it back into the buffer and then the reader page
may be accounted for again.
Save off the original reader page and skip accounting it when
scanning the pages in the ring buffer.
* tag 'trace-ring-buffer-v7.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
ring-buffer: Do not double count the reader_page
Linus Torvalds [Fri, 24 Apr 2026 22:06:55 +0000 (15:06 -0700)]
Merge tag 'block-7.1-
20260424' of git://git./linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:
- Series for zloop, fixing a variety of issues
- t10-pi code cleanup
- Fix for a merge window regression with the bio memory allocation mask
- Fix for a merge window regression in ublk, caused by an issue with
the maple tree iteration code at teardown
- ublk self tests additions
- Zoned device pgmap fixes
- Various little cleanups and fixes
* tag 'block-7.1-
20260424' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (21 commits)
Revert "floppy: fix reference leak on platform_device_register() failure"
ublk: avoid unpinning pages under maple tree spinlock
ublk: refactor common helper ublk_shmem_remove_ranges()
ublk: fix maple tree lockdep warning in ublk_buf_cleanup
selftests: ublk: add ublk auto integrity test
selftests: ublk: enable test_integrity_02.sh on fio 3.42
selftests: ublk: remove unused argument to _cleanup
block: only restrict bio allocation gfp mask asked to block
block/blk-throttle: Add WQ_PERCPU to alloc_workqueue users
block: Add WQ_PERCPU to alloc_workqueue users
block: relax pgmap check in bio_add_page for compatible zone device pages
block: add pgmap check to biovec_phys_mergeable
floppy: fix reference leak on platform_device_register() failure
ublk: use unchecked copy helpers for bio page data
t10-pi: reduce ref tag code duplication
zloop: remove irq-safe locking
zloop: factor out zloop_mark_{full,empty} helpers
zloop: set RQF_QUIET when completing requests on deleted devices
zloop: improve the unaligned write pointer warning
zloop: use vfs_truncate
...
Linus Torvalds [Fri, 24 Apr 2026 22:00:54 +0000 (15:00 -0700)]
Merge tag 'io_uring-7.1-
20260424' of git://git./linux/kernel/git/axboe/linux
Pull io_uring fixes from Jens Axboe:
- Fix for a NOMMU bug with io_uring, where NOMMU doesn't grab page refs
at mmap time. NOMMU also has entirely broken FOLL_PIN support, yet
here we are
- A few fixes covering minor issues introduced in this merge window
- data race annotation to shut up KCSAN for when io-wq limits are
applied
- A nospec addition for direct descriptor file updating. Rest of the
direct descriptor path already had this, but for some reason the
update did not. Now they are all the same
- Various minor defensive changes that claude identified and suggested
terrible fixes for, turned into actually useful cleanups:
- Use kvfree() for the imu cache. These can come from kmalloc or
vmalloc depending on size, but the in-cache ones are capped
where it's always kmalloc based. Change to kvfree() in the
cleanup path, making future changes unlikely to mess that up
- Negative kbuf consumption lengths. Can't happen right now, but
cqe->res is used directly, which if other codes changes could
then be an error value
- Fix for an issue with the futex code, where partial wakes on a
vectored fuxes would potentially wake the same futex twice, rather
than move on to the next one. This could confuse an application as it
would've expected the next futex to have been woken
- Fix for a bug with ring resizing, where SQEs or CQEs might not have
been copied correctly if large SQEs or CQEs are used in the ring.
Application side issue, where SQEs or CQEs might have been lost
during resize
- Fix for a bug where EPOLL_URING_WAKE might have been lost, causing a
multishot poll to not be terminated when it's nested, like it should
have been
- Fix for an issue with signed comparison of poll references for the
slow path
- Fix for a user struct UAF in the zcrx code
- Two minor zcrx cleanups
* tag 'io_uring-7.1-
20260424' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
io_uring: take page references for NOMMU pbuf_ring mmaps
io_uring/poll: ensure EPOLL_ONESHOT is propagated for EPOLL_URING_WAKE
io_uring/zcrx: warn on freelist violations
io_uring/zcrx: clear RQ headers on init
io_uring/zcrx: fix user_struct uaf
io_uring/register: fix ring resizing with mixed/large SQEs/CQEs
io_uring/futex: ensure partial wakes are appropriately dequeued
io_uring/rw: add defensive hardening for negative kbuf lengths
io_uring/rsrc: use kvfree() for the imu cache
io_uring/rsrc: unify nospec indexing for direct descriptors
io_uring: fix spurious fput in registered ring path
io_uring: fix iowq_limits data race in tctx node addition
io_uring/tctx: mark io_wq as exiting before error path teardown
io_uring/tctx: check for setup tctx->io_wq before teardown
io_uring/poll: fix signed comparison in io_poll_get_ownership()
Linus Torvalds [Fri, 24 Apr 2026 21:20:03 +0000 (14:20 -0700)]
Merge tag 'nfs-for-7.1-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Bugfixes:
- Fix handling of ENOSPC so that if we have to resend writes, they
are written synchronously
- SUNRPC RDMA transport fixes from Chuck
- Several fixes for delegated timestamps in NFSv4.2
- Failure to obtain a directory delegation should not cause stat() to
fail with NFSv4
- Rename was failing to update timestamps when a directory delegation
is held on NFSv4
- Ensure we check rsize/wsize after crossing a NFSv4 filesystem
boundary
- NFSv4/pnfs:
- If the server is down, retry the layout returns on reboot
- Fallback to MDS could result in a short write being incorrectly
logged
Cleanups:
- Use memcpy_and_pad in decode_fh"
* tag 'nfs-for-7.1-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (21 commits)
NFS: Fix RCU dereference of cl_xprt in nfs_compare_super_address
NFS: remove redundant __private attribute from nfs_page_class
NFSv4.2: fix CLONE/COPY attrs in presence of delegated attributes
NFS: fix writeback in presence of errors
nfs: use memcpy_and_pad in decode_fh
NFSv4.1: Apply session size limits on clone path
NFSv4: retry GETATTR if GET_DIR_DELEGATION failed
NFS: fix RENAME attr in presence of directory delegations
pnfs/flexfiles: validate ds_versions_cnt is non-zero
NFS/blocklayout: print each device used for SCSI layouts
xprtrdma: Post receive buffers after RPC completion
xprtrdma: Scale receive batch size with credit window
xprtrdma: Replace rpcrdma_mr_seg with xdr_buf cursor
xprtrdma: Decouple frwr_wp_create from frwr_map
xprtrdma: Close lost-wakeup race in xprt_rdma_alloc_slot
xprtrdma: Avoid 250 ms delay on backlog wakeup
xprtrdma: Close sendctx get/put race that can block a transport
nfs: update inode ctime after removexattr operation
nfs: fix utimensat() for atime with delegated timestamps
NFS: improve "Server wrote zero bytes" error
...
Linus Torvalds [Fri, 24 Apr 2026 20:47:19 +0000 (13:47 -0700)]
Merge tag 'ceph-for-7.1-rc1' of https://github.com/ceph/ceph-client
Pull ceph updates from Ilya Dryomov:
"We have a series from Alex which extends CephFS client metrics with
support for per-subvolume data I/O performance and latency tracking
(metadata operations aren't included) and a good variety of fixes and
cleanups across RBD and CephFS"
* tag 'ceph-for-7.1-rc1' of https://github.com/ceph/ceph-client:
ceph: add subvolume metrics collection and reporting
ceph: parse subvolume_id from InodeStat v9 and store in inode
ceph: handle InodeStat v8 versioned field in reply parsing
libceph: Fix slab-out-of-bounds access in auth message processing
rbd: fix null-ptr-deref when device_add_disk() fails
crush: cleanup in crush_do_rule() method
ceph: clear s_cap_reconnect when ceph_pagelist_encode_32() fails
ceph: only d_add() negative dentries when they are unhashed
libceph: update outdated comment in ceph_sock_write_space()
libceph: Remove obsolete session key alignment logic
ceph: fix num_ops off-by-one when crypto allocation fails
libceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply()
Linus Torvalds [Fri, 24 Apr 2026 20:40:25 +0000 (13:40 -0700)]
Merge tag 'ntfs-for-7.1-rc1-part2' of git://git./linux/kernel/git/linkinjeon/ntfs
Pull ntfs updates from Namjae Jeon:
- Fix potential data leakage by zeroing the portion of the straddle
block beyond initialized_size when reading non-resident attributes
- Remove unnecessary zeroing in ntfs_punch_hole() for ranges beyond
initialized_size, as they are already returned as zeros on read
- Fix writable check in ntfs_file_mmap_prepare() to correctly handle
shared mappings using VMA_SHARED_BIT | VMA_MAYWRITE_BIT
- Use page allocation instead of kmemdup() for IOMAP_INLINE data to
ensure page-aligned address and avoid BUG trap in
iomap_inline_data_valid() caused by the page boundary check
- Add a size check before memory allocation in ntfs_attr_readall() and
reject overly large attributes
- Remove unneeded noop_direct_IO from ntfs_aops as it is no longer
required following the FMODE_CAN_ODIRECT flag
- Fix seven static analysis warnings reported by Smatch
* tag 'ntfs-for-7.1-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs:
ntfs: use page allocation for resident attribute inline data
ntfs: fix mmap_prepare writable check for shared mappings
ntfs: fix potential 32-bit truncation in ntfs_write_cb()
ntfs: fix uninitialized variable in ntfs_map_runlist_nolock
ntfs: delete dead code
ntfs: add missing error code in ntfs_mft_record_alloc()
ntfs: fix uninitialized variables in ntfs_ea_set_wsl_inode()
ntfs: fix uninitialized pointer in ntfs_write_mft_block
ntfs: fix uninitialized variable in ntfs_write_simple_iomap_begin_non_resident
ntfs: remove noop_direct_IO from address_space_operations
ntfs: limit memory allocation in ntfs_attr_readall
ntfs: not zero out range beyond init in punch_hole
ntfs: zero out stale data in straddle block beyond initialized_size
Linus Torvalds [Fri, 24 Apr 2026 20:37:26 +0000 (13:37 -0700)]
Merge tag '9p-for-7.1-rc1' of https://github.com/martinetd/linux
Pull 9p updates from Dominique Martinet:
- 9p access flag fix (cannot change access flag since new mount API implem)
- some minor cleanup
* tag '9p-for-7.1-rc1' of https://github.com/martinetd/linux:
9p/trans_xen: replace simple_strto* with kstrtouint
9p/trans_xen: make cleanup idempotent after dataring alloc errors
9p: document missing enum values in kernel-doc comments
9p: fix access mode flags being ORed instead of replaced
9p: fix memory leak in v9fs_init_fs_context error path
Linus Torvalds [Fri, 24 Apr 2026 20:30:54 +0000 (13:30 -0700)]
Merge tag 'spdx-7.1-rc1' of git://git./linux/kernel/git/gregkh/spdx
Pull SPDX update from Greg KH:
"Here is a single SPDX-like change for 7.1-rc1. It explicitly allows
the use of SPDX-FileCopyrightText which has been used already in many
files.
At the same time, update checkpatch to catch any "non allowed" spdx
identifiers as we don't want to go overboard here.
This has been in linux-next for a long time with no reported problems"
* tag 'spdx-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx:
LICENSES: Explicitly allow SPDX-FileCopyrightText
Linus Torvalds [Fri, 24 Apr 2026 20:23:50 +0000 (13:23 -0700)]
Merge tag 'char-misc-7.1-rc1' of git://git./linux/kernel/git/gregkh/char-misc
Pull char / misc / IIO / and others driver updates from Greg KH:
"Here is the char/misc/iio and other smaller driver subsystem updates
for 7.1-rc1. Lots of stuff in here, all tiny, but relevant for the
different drivers they touch. Major points in here is:
- the usual large set of new IIO drivers and updates for that
subsystem (the large majority of this diffstat)
- lots of comedi driver updates and bugfixes
- coresight driver updates
- interconnect driver updates and additions
- mei driver updates
- binder (both rust and C versions) updates and fixes
- lots of other smaller driver subsystem updates and additions
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (405 commits)
coresight: tpdm: fix invalid MMIO access issue
mei: me: add nova lake point H DID
mei: lb: add late binding version 2
mei: bus: add mei_cldev_uuid
w1: ds2490: drop redundant device reference
bus: mhi: host: pci_generic: Add Telit
FE912C04 modem support
mei: csc: wake device while reading firmware status
mei: csc: support controller with separate PCI device
mei: convert PCI error to common errno
mei: trace: print return value of pci_cfg_read
mei: me: move trace into firmware status read
mei: fix idle print specifiers
mei: me: use PCI_DEVICE_DATA macro
sonypi: Convert ACPI driver to a platform one
misc: apds990x: fix all kernel-doc warnings
most: usb: Use kzalloc_objs for endpoint address array
hpet: Convert ACPI driver to a platform one
misc: vmw_vmci: Fix spelling mistakes in comments
parport: Remove completed item from to-do list
char: remove unnecessary module_init/exit functions
...
Linus Torvalds [Fri, 24 Apr 2026 20:16:36 +0000 (13:16 -0700)]
Merge tag 'spi-fix-v7.1-merge-window' of git://git./linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"This is quite a big set of fixes, almost all from Johan Hovold who is
on an ongoing quest to clean up issues with probe and removal handling
in drivers.
There isn't anything too concerning here especially with the
deregistration stuff which will very rarely get run in production
systems since this is all platform devices in the SoC on embedded
hardware, but it's all real issues which should be fixed. There's more
in flight here.
We also have a few other minor fixes, one from Felix Gu along the same
lines as Johan's work and a couple of documentation things"
* tag 'spi-fix-v7.1-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (23 commits)
spi: fix controller cleanup() documentation
spi: fix resource leaks on device setup failure
spi: axiado: clean up probe return value
spi: axiado: rename probe error labels
spi: axiado: fix runtime pm imbalance on probe failure
spi: orion: clean up probe return value
spi: orion: fix clock imbalance on registration failure
spi: orion: fix runtime pm leak on unbind
spi: imx: fix runtime pm leak on probe deferral
spi: mpc52xx: fix use-after-free on registration failure
spi: Fix the error description in the `ptp_sts_word_post` comment
spi: topcliff-pch: fix use-after-free on unbind
spi: topcliff-pch: fix controller deregistration
spi: orion: fix controller deregistration
spi: mxic: fix controller deregistration
spi: mpc52xx: fix use-after-free on unbind
spi: mpc52xx: fix controller deregistration
spi: cadence-quadspi: fix controller deregistration
spi: cadence: fix controller deregistration
spi: mtk-snfi: fix memory leak in probe
...
Linus Torvalds [Fri, 24 Apr 2026 20:06:25 +0000 (13:06 -0700)]
Merge tag 'regulator-fix-v7.1-merge-window' of git://git./linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"Just one trivial cleanup of the user visible prompts in Kconfig here,
standardising how we describe Qualcomm"
* tag 'regulator-fix-v7.1-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: qcom: Unify user-visible "Qualcomm" name
Masami Hiramatsu (Google) [Fri, 24 Apr 2026 06:52:10 +0000 (15:52 +0900)]
ring-buffer: Do not double count the reader_page
Since the cpu_buffer->reader_page is updated if there are unwound
pages. After that update, we should skip the page if it is the
original reader_page, because the original reader_page is already
checked.
Cc: stable@vger.kernel.org
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Ian Rogers <irogers@google.com>
Link: https://patch.msgid.link/177701353063.2223789.1471163147644103306.stgit@mhiramat.tok.corp.google.com
Fixes:
ca296d32ece3 ("tracing: ring_buffer: Rewind persistent ring buffer on reboot")
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Linus Torvalds [Fri, 24 Apr 2026 19:11:26 +0000 (12:11 -0700)]
Merge tag 'regmap-fix-v7.1-merge-window' of git://git./linux/kernel/git/broonie/regmap
Pull regmap fixes from Mark Brown:
"There's couple of patches here that came in since my pull request:
- What is effectively a quirk for shoehorning support for a wider
range of I2C regmaps on weirdly restricted SMBus controllers
- One minor fix for a memory leak on in error handling in the dummy
driver used by the KUnit tests"
* tag 'regmap-fix-v7.1-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: ram: fix memory leaks in __regmap_init_ram() on error
regmap-i2c: add SMBus byte/word reg16 bus for adapters lacking I2C_FUNC_I2C
Linus Torvalds [Fri, 24 Apr 2026 18:59:46 +0000 (11:59 -0700)]
Merge tag 'gpio-fixes-for-v7.1-rc1' of git://git./linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- fix a regression in gpio-rockchip introduced on older chips during
the merge window when converting to dynamic GPIO base
- fix AST2700 debounce selector bit definitions in gpio-aspeed
* tag 'gpio-fixes-for-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: aspeed: fix AST2700 debounce selector bit definitions
gpio: rockchip: Fix GPIO regression after conversion to dynamic base allocation
Linus Torvalds [Fri, 24 Apr 2026 18:49:20 +0000 (11:49 -0700)]
Merge tag 'sound-fix-7.1-rc1' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Here are the rest of small updates for 7.1-rc1. All small fixes mostly
for device-specific issues or regressions.
Core:
- Fix a potential data race in fasync handling
USB-audio:
- New device support: Line6 POD HD PRO, NexiGo N930W webcam
- Fixes for Audio Advantage Micro II SPDIF switch and E-MU sample
rates
- Limit UAC2 rate parsing to prevent potential overflows
HD-Audio:
- Device-specific quirks for HP, Acer, and Honor laptops
- Fix for TAS2781 SPI device abnormal sound
- Move Intel firmware loading into probe work to avoid stalling
ASoC:
- New support for TI TAS5832
- Fixes for SoundWire SDCA/DisCo boolean parsing
- Driver-specific fixes for Intel SOF, ES8311, RT1320, and PXA2xx
Misc:
- Fixes for resource leaks and data races in 6fire, caiaq, als4000,
and pcmtest drivers"
* tag 'sound-fix-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (41 commits)
Revert "ALSA: pcmtest: fix reference leak on failed device registration"
ASoC: tas2781: Add tas5832 support
ASoC: dt-bindings: ti,tas2781: Add TAS5832 support
ALSA: usb-audio: Fix Audio Advantage Micro II SPDIF switch
ALSA: usb-audio: Avoid false E-MU sample-rate notifications
ASoC: sdw_utils: cs42l43: allow spk component names to be combined
ASoC: qcom: x1e80100: limit speaker volumes
ALSA: hda/realtek - Add mute LED support for HP Victus 15-fa2xxx
ALSA: pcmtest: Fix resource leaks in module init error paths
ALSA: usb-audio/line6: Add support for POD HD PRO
ALSA: hda/realtek: Add LED fixup for HP EliteBook 6 G2a Laptops
ASoC: SDCA: Fix reading of mipi-sdca-control-deferrable
regmap: sdw-mbq: Allow defers on undeferrable controls
Revert "ALSA: usb-audio: Add quirk for SmartlinkTechnology M01"
ALSA: als4000: Fix capture trigger chip->mode race
ALSA: core: Fix potential data race at fasync handling
ALSA: hda/tas2781: Fix sound abnormal issue on some SPI device
ALSA: hda/realtek: add quirk for Acer Nitro 16 AN16-41
ALSA: caiaq: Fix control_put() result and cache rollback
ALSA: pcmtest: fix reference leak on failed device registration
...
Linus Torvalds [Fri, 24 Apr 2026 18:44:52 +0000 (11:44 -0700)]
Merge tag 'drm-fixes-2026-04-24' of https://gitlab.freedesktop.org/drm/kernel
Pull more drm fixes from Dave Airlie:
"These are the regular fixes that have built up over last couple of
weeks, all pretty minor and spread all over.
atomic:
- raise the vblank timeout to avoid it on virtual drivers
- fix colorop duplication
bridge:
- stm_lvds: state check fix
- dw-mipi-dsi: bridge reference leak fix
panel:
- visionx-rm69299: init fix
dma-fence:
- fix sparse warning
dma-buf:
- UAF fix
panthor:
- mapping fix
arcgpu:
- device_node reference leak fix
nouveau:
- memory leak in error path fix
- overflow in reloc path for old hw fix
hv:
- Kconfig fix
v3d:
- infinite loop fix"
* tag 'drm-fixes-2026-04-24' of https://gitlab.freedesktop.org/drm/kernel:
drm/nouveau: fix u32 overflow in pushbuf reloc bounds check
MAINTAINERS: split hisilicon maintenance and add Yongbang Shi for hibmc-drm matainers
drm/v3d: Reject empty multisync extension to prevent infinite loop
drm/panel: visionox-rm69299: Make use of prepare_prev_first
drm/drm_atomic: duplicate colorop states if plane color pipeline in use
drm/nouveau: fix nvkm_device leak on aperture removal failure
hv: Select CONFIG_SYSFB only for CONFIG_HYPERV_VMBUS
dma-fence: Silence sparse warning in dma_fence_describe
drm/bridge: dw-mipi-dsi: Fix bridge leak when host attach fails
drm/arcpgu: fix device node leak
drm/panthor: Fix outdated function documentation
drm/panthor: Extend VM locked region for remap case to be a superset
dma-buf: fix UAF in dma_buf_put() tracepoint
drm/bridge: stm_lvds: Do not fail atomic_check on disabled connector
drm/atomic: Increase timeout in drm_atomic_helper_wait_for_vblanks()
Linus Torvalds [Fri, 24 Apr 2026 18:33:23 +0000 (11:33 -0700)]
Merge tag 'drm-next-2026-04-24' of https://gitlab.freedesktop.org/drm/kernel
Pull drm next fixes from Dave Airlie:
"This is the first of two fixes for the merge PRs, the other is based
on 7.0 branch. This mostly AMD fixes, a couple of weeks of backlog
built up and this weeks. The main complaint I've seen is some boot
warnings around the FP code handling which this should fix. Otherwise
a single rcar-du and a single i915 fix.
amdgpu:
- SMU 14 fixes
- Partition fixes
- SMUIO 15.x fix
- SR-IOV fixes
- JPEG fix
- PSP 15.x fix
- NBIF fix
- Devcoredump fixes
- DPC fix
- RAS fixes
- Aldebaran smu fix
- IP discovery fix
- SDMA 7.1 fix
- Runtime pm fix
- MES 12.1 fix
- DML2 fixes
- DCN 4.2 fixes
- YCbCr fixes
- Freesync fixes
- ISM fixes
- Overlay cursor fix
- DC FP fixes
- UserQ locking fixes
- DC idle state manager fix
- ASPM fix
- GPUVM SVM fix
- DCE 6 fix
amdkfd:
- Fix memory clear handling
- num_of_nodes bounds check fix
i915:
- Fix uninitialized variable in the alignment loop [psr]
rcar-du:
- fix NULL-ptr crash"
* tag 'drm-next-2026-04-24' of https://gitlab.freedesktop.org/drm/kernel: (75 commits)
drm/amdkfd: Add upper bound check for num_of_nodes
drm: rcar-du: Fix crash when no CMM is available
drm/amd/display: Disable 10-bit truncation and dithering on DCE 6.x
drm/amdgpu: OR init_pte_flags into invalid leaf PTE updates
drm/amd: Adjust ASPM support quirk to cover more Intel hosts
drm/amd/display: Undo accidental fix revert in amdgpu_dm_ism.c
drm/i915/psr: Init variable to avoid early exit from et alignment loop
drm/amdgpu: drop userq fence driver refs out of fence process()
drm/amdgpu/userq: unpin and unref doorbell and wptr outside mutex
drm/amdgpu/userq: use pm_runtime_resume_and_get and fix err handling
drm/amdgpu/userq: unmap_helper dont return the queue state
drm/amdgpu/userq: unmap is to be called before freeing doorbell/wptr bo
drm/amdgpu/userq: hold root bo lock in caller of input_va_validate
drm/amdgpu/userq: caller to take reserv lock for vas_list_cleanup
drm/amdgpu/userq: create_mqd does not need userq_mutex
drm/amdgpu/userq: dont lock root bo with userq_mutex held
drm/amdgpu/userq: fix kerneldoc for amdgpu_userq_ensure_ev_fence
drm/amdgpu/userq: clean the VA mapping list for failed queue creation
drm/amdgpu/userq: avoid uneccessary locking in amdgpu_userq_create
drm/amd/display: Fix ISM teardown crash from NULL dc dereference
...
Richard Cheng [Fri, 24 Apr 2026 10:02:21 +0000 (18:02 +0800)]
sched_ext: sync disable_irq_work in bpf_scx_unreg()
When unregistered my self-written scx scheduler, the following panic
occurs.
[ 229.923133] Kernel text patching generated an invalid instruction at 0xffff80009bc2c1f8!
[ 229.923146] Internal error: Oops - BRK:
00000000f2000100 [#1] SMP
[ 230.077871] CPU: 48 UID: 0 PID: 1760 Comm: kworker/u583:7 Not tainted 7.0.0+ #3 PREEMPT(full)
[ 230.086677] Hardware name: NVIDIA GB200 NVL/P3809-BMC, BIOS 02.05.12
20251107
[ 230.093972] Workqueue: events_unbound bpf_map_free_deferred
[ 230.099675] Sched_ext: invariant_0.1.0_aarch64_unknown_linux_gnu_debug (disabling), task: runnable_at=-174ms
[ 230.116843] pc : 0xffff80009bc2c1f8
[ 230.120406] lr : dequeue_task_scx+0x270/0x2d0
[ 230.217749] Call trace:
[ 230.228515] 0xffff80009bc2c1f8 (P)
[ 230.232077] dequeue_task+0x84/0x188
[ 230.235728] sched_change_begin+0x1dc/0x250
[ 230.240000] __set_cpus_allowed_ptr_locked+0x17c/0x240
[ 230.245250] __set_cpus_allowed_ptr+0x74/0xf0
[ 230.249701] ___migrate_enable+0x4c/0xa0
[ 230.253707] bpf_map_free_deferred+0x1a4/0x1b0
[ 230.258246] process_one_work+0x184/0x540
[ 230.262342] worker_thread+0x19c/0x348
[ 230.266170] kthread+0x13c/0x150
[ 230.269465] ret_from_fork+0x10/0x20
[ 230.281393] Code:
d4202000 d4202000 d4202000 d4202000 (
d4202000)
[ 230.287621] ---[ end trace
0000000000000000 ]---
[ 231.160046] Kernel panic - not syncing: Oops - BRK: Fatal exception in interrupt
The root cause is that the JIT page backing ops->quiescent() is freed
before all callers of that function have stopped.
The expected ordering during teardown is:
bitmap_zero(sch->has_op) + synchronize_rcu()
-> guarantees no CPU will ever call sch->ops.* again
-> only THEN free the BPF struct_ops JIT page
bpf_scx_unreg() is supposed to enforce the order, but after
commit
f4a6c506d118 ("sched_ext: Always bounce scx_disable() through
irq_work"), disable_work is no longer queued directly, causing
kthread_flush_work() to be a noop. Thus, the caller drops the struct_ops
map too early and poisoned with AARCH64_BREAK_FAULT before
disable_workfn ever execute.
So the subsequent dequeue_task() still sees SCX_HAS_OP(sch, quiescent)
as true and calls ops.quiescent, which hit on the poisoned page and BRK
panic.
Add a helper scx_flush_disable_work() so the future use cases that want
to flush disable_work can use it.
Also amend the call for scx_root_enable_workfn() and
scx_sub_enable_workfn() which have similar pattern in the error path.
Fixes:
f4a6c506d118 ("sched_ext: Always bounce scx_disable() through irq_work")
Signed-off-by: Richard Cheng <icheng@nvidia.com>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
Reviewed-by: Cheng-Yang Chou <yphbchou0911@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Linus Torvalds [Fri, 24 Apr 2026 17:14:29 +0000 (10:14 -0700)]
Merge tag 'locking-urgent-2026-04-24' of git://git./linux/kernel/git/tip/tip
Pull locking fixes from Ingo Molnar:
- Fix ww_mutex regression, which caused hangs/pauses in some DRM drivers
- Fix rtmutex proxy-rollback bug
* tag 'locking-urgent-2026-04-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/mutex: Fix ww_mutex wait_list operations
rtmutex: Use waiter::task instead of current in remove_waiter()
Linus Torvalds [Fri, 24 Apr 2026 17:05:42 +0000 (10:05 -0700)]
Merge tag 'x86-urgent-2026-04-24' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
- Prevent deadlock during shstk sigreturn (Rick Edgecombe)
- Disable FRED when PTI is forced on (Dave Hansen)
- Revert a CPA INVLPGB optimization that did not properly handle
discontiguous virtual addresses (Dave Hansen)
* tag 'x86-urgent-2026-04-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Revert INVLPGB optimization for set_memory code
x86/cpu: Disable FRED when PTI is forced on
x86/shstk: Prevent deadlock during shstk sigreturn
Linus Torvalds [Fri, 24 Apr 2026 17:00:37 +0000 (10:00 -0700)]
Merge tag 'riscv-for-linus-7.1-mw1' of git://git./linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley:
"There is one significant change outside arch/riscv in this pull
request: the addition of a set of KUnit tests for strlen(), strnlen(),
and strrchr().
Otherwise, the most notable changes are to add some RISC-V-specific
string function implementations, to remove XIP kernel support, to add
hardware error exception handling, and to optimize our runtime
unaligned access speed testing.
A few comments on the motivation for removing XIP support. It's been
broken in the RISC-V kernel for months. The code is not easy to
maintain. Furthermore, for XIP support to truly be useful for RISC-V,
we think that compile-time feature switches would need to be added for
many of the RISC-V ISA features and microarchitectural properties that
are currently implemented with runtime patching. No one has stepped
forward to take responsibility for that work, so many of us think it's
best to remove it until clear use cases and champions emerge.
Summary:
- Add Kunit correctness testing and microbenchmarks for strlen(),
strnlen(), and strrchr()
- Add RISC-V-specific strnlen(), strchr(), strrchr() implementations
- Add hardware error exception handling
- Clean up and optimize our unaligned access probe code
- Enable HAVE_IOREMAP_PROT to be able to use generic_access_phys()
- Remove XIP kernel support
- Warn when addresses outside the vmemmap range are passed to
vmemmap_populate()
- Update the ACPI FADT revision check to warn if it's not at least
ACPI v6.6, which is when key RISC-V-specific tables were added to
the specification
- Increase COMMAND_LINE_SIZE to 2048 to match ARM64, x86, PowerPC,
etc.
- Make kaslr_offset() a static inline function, since there's no need
for it to show up in the symbol table
- Add KASLR offset and SATP to the VMCOREINFO ELF notes to improve
kdump support
- Add Makefile cleanup rule for vdso_cfi copied source files, and add
a .gitignore for the build artifacts in that directory
- Remove some redundant ifdefs that check Kconfig macros
- Add missing SPDX license tag to the CFI selftest
- Simplify UTS_MACHINE assignment in the RISC-V Makefile
- Clarify some unclear comments and remove some superfluous comments
- Fix various English typos across the RISC-V codebase"
* tag 'riscv-for-linus-7.1-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (31 commits)
riscv: Remove support for XIP kernel
riscv: Reuse compare_unaligned_access() in check_vector_unaligned_access()
riscv: Split out compare_unaligned_access()
riscv: Reuse measure_cycles() in check_vector_unaligned_access()
riscv: Split out measure_cycles() for reuse
riscv: Clean up & optimize unaligned scalar access probe
riscv: lib: add strrchr() implementation
riscv: lib: add strchr() implementation
riscv: lib: add strnlen() implementation
lib/string_kunit: extend benchmarks to strnlen() and chr searches
lib/string_kunit: add performance benchmark for strlen()
lib/string_kunit: add correctness test for strrchr()
lib/string_kunit: add correctness test for strnlen()
lib/string_kunit: add correctness test for strlen()
riscv: vdso_cfi: Add .gitignore for build artifacts
riscv: vdso_cfi: Add clean rule for copied sources
riscv: enable HAVE_IOREMAP_PROT
riscv: mm: WARN_ON() for bad addresses in vmemmap_populate()
riscv: acpi: update FADT revision check to 6.6
riscv: add hardware error trap handler support
...
Linus Torvalds [Fri, 24 Apr 2026 16:54:45 +0000 (09:54 -0700)]
Merge tag 'loongarch-7.1' of git://git./linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen:
- Adjust build infrastructure for 32BIT/64BIT
- Add HIGHMEM (PKMAP and FIX_KMAP) support
- Show and handle CPU vulnerabilites correctly
- Batch the icache maintenance for jump_label
- Add more atomic instructions support for BPF JIT
- Add more features (e.g. fsession) support for BPF trampoline
- Some bug fixes and other small changes
* tag 'loongarch-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (21 commits)
selftests/bpf: Enable CAN_USE_LOAD_ACQ_STORE_REL for LoongArch
LoongArch: BPF: Add fsession support for trampolines
LoongArch: BPF: Introduce emit_store_stack_imm64() helper
LoongArch: BPF: Support up to 12 function arguments for trampoline
LoongArch: BPF: Support small struct arguments for trampoline
LoongArch: BPF: Open code and remove invoke_bpf_mod_ret()
LoongArch: BPF: Support load-acquire and store-release instructions
LoongArch: BPF: Support 8 and 16 bit read-modify-write instructions
LoongArch: BPF: Add the default case in emit_atomic() and rename it
LoongArch: Define instruction formats for AM{SWAP/ADD}.{B/H} and DBAR
LoongArch: Batch the icache maintenance for jump_label
LoongArch: Add flush_icache_all()/local_flush_icache_all()
LoongArch: Add spectre boundry for syscall dispatch table
LoongArch: Show CPU vulnerabilites correctly
LoongArch: Make arch_irq_work_has_interrupt() true only if IPI HW exist
LoongArch: Use get_random_canary() for stack canary init
LoongArch: Improve the logging of disabling KASLR
LoongArch: Align FPU register state to 32 bytes
LoongArch: Handle CONFIG_32BIT in syscall_get_arch()
LoongArch: Add HIGHMEM (PKMAP and FIX_KMAP) support
...
Linus Torvalds [Fri, 24 Apr 2026 16:41:58 +0000 (09:41 -0700)]
Merge tag 'net-deletions' of git://git./linux/kernel/git/netdev/net-next
Pull networking deletions from Jakub Kicinski:
"Delete some obsolete networking code
Old code like amateur radio and NFC have long been a burden to core
networking developers. syzbot loves to find bugs in BKL-era code, and
noobs try to fix them.
If we want to have a fighting chance of surviving the LLM-pocalypse
this code needs to find a dedicated owner or get deleted. We've talked
about these deletions multiple times in the past and every time
someone wanted the code to stay. It is never very clear to me how many
of those people actually use the code vs are just nostalgic to see it
go. Amateur radio did have occasional users (or so I think) but most
users switched to user space implementations since its all super slow
stuff. Nobody stepped up to maintain the kernel code.
We were lucky enough to find someone who wants to help with NFC so
we're giving that a chance. Let's try to put the rest of this code
behind us"
* tag 'net-deletions' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next:
drivers: net: 8390: wd80x3: Remove this driver
drivers: net: 8390: ultra: Remove this driver
drivers: net: 8390: AX88190: Remove this driver
drivers: net: fujitsu: fmvj18x: Remove this driver
drivers: net: smsc: smc91c92: Remove this driver
drivers: net: smsc: smc9194: Remove this driver
drivers: net: amd: nmclan: Remove this driver
drivers: net: amd: lance: Remove this driver
drivers: net: 3com: 3c589: Remove this driver
drivers: net: 3com: 3c574: Remove this driver
drivers: net: 3com: 3c515: Remove this driver
drivers: net: 3com: 3c509: Remove this driver
net: packetengines: remove obsolete yellowfin driver and vendor dir
net: packetengines: remove obsolete hamachi driver
net: remove unused ATM protocols and legacy ATM device drivers
net: remove ax25 and amateur radio (hamradio) subsystem
net: remove ISDN subsystem and Bluetooth CMTP
caif: remove CAIF NETWORK LAYER
Linus Torvalds [Fri, 24 Apr 2026 16:39:03 +0000 (09:39 -0700)]
Merge tag 'slab-for-7.1-fix' of git://git./linux/kernel/git/vbabka/slab
Pull slab fix from Vlastimil Babka:
- A stable fix for k(v)ealloc() where reallocating on a different node
or shrinking the object can result in either losing the original data
or a buffer overflow (Marco Elver)
* tag 'slab-for-7.1-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
slub: fix data loss and overflow in krealloc()
Linus Torvalds [Fri, 24 Apr 2026 16:29:51 +0000 (09:29 -0700)]
Merge tag 'clang-fixes-7.1-1' of git://git./linux/kernel/git/nathan/linux
Pull Clang build fix from Nathan Chancellor:
- Wrap declaration and assignment of key_pass in certs/extract-cert.c
with '#ifdef' that matches its only usage to clear up an instance of
a new clang subwarning, -Wunused-but-set-global.
* tag 'clang-fixes-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nathan/linux:
extract-cert: Wrap key_pass with '#ifdef USE_PKCS11_ENGINE'
Linus Torvalds [Fri, 24 Apr 2026 16:22:21 +0000 (09:22 -0700)]
Merge tag 'apparmor-pr-2026-04-23' of git://git./linux/kernel/git/jj/linux-apparmor
Pull apparmor updates from John Johansen:
"Cleanups
- Use sysfs_emit in param_get_{audit,mode}
- Remove redundant if check in sk_peer_get_label
- Replace memcpy + NUL termination with kmemdup_nul in do_setattr
Bug Fixes:
- Fix aa_dfa_unpack's error handling in aa_setup_dfa_engine
- Fix string overrun due to missing termination
- Fix wrong dentry in RENAME_EXCHANGE uid check
- fix unpack_tags to properly return error in failure cases
- fix dfa size check
- return error on namespace mismatch in verify_header
- use target task's context in apparmor_getprocattr()"
* tag 'apparmor-pr-2026-04-23' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor:
apparmor/lsm: Fix aa_dfa_unpack's error handling in aa_setup_dfa_engine
apparmor: Fix string overrun due to missing termination
apparmor: Fix wrong dentry in RENAME_EXCHANGE uid check
apparmor: fix unpack_tags to properly return error in failure cases
apparmor: fix dfa size check
apparmor: Use sysfs_emit in param_get_{audit,mode}
apparmor: Remove redundant if check in sk_peer_get_label
apparmor: Replace memcpy + NUL termination with kmemdup_nul in do_setattr
apparmor: return error on namespace mismatch in verify_header
apparmor: use target task's context in apparmor_getprocattr()
Sebastian Andrzej Siewior [Tue, 11 Nov 2025 15:54:38 +0000 (16:54 +0100)]
ARM: 9463/1: Allow to enable RT
All known issues have been adressed.
Allow to select RT.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Russell King (Oracle) [Fri, 24 Apr 2026 14:14:07 +0000 (15:14 +0100)]
Merge branches 'adfs', 'arm-fault-handling', 'fixes' and 'misc'
Brian Ruley [Wed, 15 Apr 2026 17:12:48 +0000 (18:12 +0100)]
ARM: 9472/1: fix race condition on PG_dcache_clean in __sync_icache_dcache()
This bug was already discovered and fixed for arm64 in
commit
588a513d3425 ("arm64: Fix race condition on PG_dcache_clean in
__sync_icache_dcache()").
Verified with added instrumentation to track dcache flushes in a ring
buffer, as shown by the (distilled) output:
kernel: SIGILL at
b6b80ac0 cpu 1 pid 32663 linux_pte=
8eff659f
hw_pte=
8eff6e7e young=1 exec=1
kernel: dcache flush START cpu0 pfn=8eff6 ts=
48629557020154
kernel: dcache flush SKIPPED cpu1 pfn=8eff6 ts=
48629557020154
kernel: dcache flush FINISH cpu0 pfn=8eff6 ts=
48629557036154
audisp-syslog: comm="journalctl" exe="/usr/bin/journalctl" sig=4 [...]
Discussions in the mailing list mentioned that arch/arm is also affected
but the fix was never applied to it [1][2]. Apply the change now, since
the race condition can cause sporadic SIGILL's and SEGV's especially
while under high memory pressure.
Link: https://lore.kernel.org/all/adzMOdySgMIePcue@willie-the-truck
Link: https://lore.kernel.org/all/20210514095001.13236-1-catalin.marinas@arm.com
Signed-off-by: Brian Ruley <brian.ruley@gehealthcare.com>
Reviewed-by: Will Deacon <will@kernel.org>
Cc: <stable@vger.kernel.org>
Fixes:
6012191aa9c6 ("ARM: 6380/1: Introduce __sync_icache_dcache() for VIPT caches")
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Dave Hansen [Tue, 21 Apr 2026 15:19:09 +0000 (08:19 -0700)]
x86/mm: Revert INVLPGB optimization for set_memory code
tl;dr: Revert an INVLPGB optimization that did not properly handle
discontiguous virtual addresses.
Full story:
I got a report from some graphics (i915) folks that bisected a
regression in their test suite to
86e6815b316e ("x86/mm: Change
cpa_flush() to call flush_kernel_range() directly"). There was a bit
of flip-flopping on the exact bisect, but the code here does seem
wrong to me. The i915 folks were calling set_pages_array_wc(), so
using the CPA_PAGES_ARRAY mode.
Basically, the 'struct cpa_data' can wrap up all kinds of page table
changes. Some of these are virtually contiguous, but some are very
much not which is one reason why there are ->vaddr and ->pages arrays.
86e6815b316e made the mistake of assuming that the virtual addresses
in the cpa_data are always contiguous. It got things right when neither
CPA_ARRAY/CPA_PAGES_ARRAY is used, but theoretically wrong when either
of those is used.
In the i915 case, it probably failed to flush some WB TLB entries and
install WC ones, leaving some data in the caches and not flushing it
out to where the device could see it. That eventually caused graphics
problems.
Revert the INVLPGB optimization. It can be reintroduced later, but it
will need to be a bit careful about the array modes.
Fixes:
86e6815b316ec ("x86/mm: Change cpa_flush() to call flush_kernel_range()")
Reported-by: Cui, Ling <ling.cui@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patch.msgid.link/20260421151909.6B3281C6@davehans-spike.ostc.intel.com
Thomas Weißschuh [Wed, 22 Apr 2026 15:10:27 +0000 (17:10 +0200)]
kbuild: Never respect CONFIG_WERROR / W=e to fixdep
The fixdep hostprog may be built multiple times during a single build.
Once during the configuration phase and later during the regular phase.
As only the regular build phase respects CONFIG_WERROR / W=e, the
compiler flags might change between the phases, leading to rebuilds.
Example, the rebuilds will happen twice on each invocation of the build:
$ make allyesconfig prepare
make[1]: Entering directory '/tmp/deleteme'
HOSTCC scripts/basic/fixdep
#
# No change to .config
#
HOSTCC scripts/basic/fixdep
DESCEND objtool
INSTALL libsubcmd_headers
make[1]: Leaving directory '/tmp/deleteme'
Fix the compilation flags used for scripts/basic/ before
scripts/Makefile.warn is evaluated to stop CONFIG_WERROR / W=e
influencing the fixdep build to avoid the spurious rebuilds.
Fixes:
7ded7d37e5f5 ("scripts/Makefile.extrawarn: Respect CONFIG_WERROR / W=e for hostprogs")
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Link: https://patch.msgid.link/20260422-kbuild-scripts-basic-werror-v1-1-8c6912ff22e0@weissschuh.net
Signed-off-by: Nicolas Schier <nsc@kernel.org>
Marc Zyngier [Thu, 23 Apr 2026 16:36:07 +0000 (17:36 +0100)]
KVM: arm64: Wake-up from WFI when iqrchip is in userspace
It appears that there is nothing in the wake-up path that
evaluates whether the in-kernel interrupts are pending unless
we have a vgic.
This means that the userspace irqchip support has been broken for
about four years, and nobody noticed. It was also broken before
as we wouldn't wake-up on a PMU interrupt, but hey, who cares...
It is probably time to remove the feature altogether, because it
was a terrible idea 10 years ago, and it still is.
Fixes:
b57de4ffd7c6d ("KVM: arm64: Simplify kvm_cpu_has_pending_timer()")
Link: https://patch.msgid.link/20260423163607.486345-1-maz@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org
Quentin Perret [Fri, 24 Apr 2026 08:49:08 +0000 (09:49 +0100)]
KVM: arm64: Fix initialisation order in __pkvm_init_finalise()
fix_host_ownership() walks the hypervisor's stage-1 page-table to
adjust the host's stage-2 accordingly. Any such adjustment that
requires cache maintenance operations depends on the per-CPU hyp
fixmap being present. However, fix_host_ownership() is currently
called before fix_hyp_pgtable_refcnt() and hyp_create_fixmap(), so
the fixmap does not yet exist when it runs.
This is benign today because the host stage-2 starts empty and no
CMOs are needed, but it becomes a latent crash as soon as
fix_host_ownership() is extended to operate on a non-empty
page-table.
Reorder the calls so that fix_hyp_pgtable_refcnt() and
hyp_create_fixmap() complete before fix_host_ownership() is invoked.
Fixes:
0d16d12eb26e ("KVM: arm64: Fix-up hyp stage-1 refcounts for all pages mapped at EL2")
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://patch.msgid.link/20260424084908.370776-7-tabba@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org
Fuad Tabba [Fri, 24 Apr 2026 08:49:07 +0000 (09:49 +0100)]
KVM: arm64: Fix pin leak and publication ordering in __pkvm_init_vcpu()
Two bugs exist in the vCPU initialisation path:
1. If a check fails after hyp_pin_shared_mem() succeeds, the cleanup
path jumps to 'unlock' without calling unpin_host_vcpu() or
unpin_host_sve_state(), permanently leaking pin references on the
host vCPU and SVE state pages.
Extract a register_hyp_vcpu() helper that performs the checks and
the store. When register_hyp_vcpu() returns an error, call
unpin_host_vcpu() and unpin_host_sve_state() inline before falling
through to the existing 'unlock' label.
2. register_hyp_vcpu() publishes the new vCPU pointer into
'hyp_vm->vcpus[]' with a bare store, allowing a concurrent caller
of pkvm_load_hyp_vcpu() to observe a partially initialised vCPU
object.
Ensure the store uses smp_store_release() and the load uses
smp_load_acquire(). While 'vm_table_lock' currently serialises the
store and the load, these barriers ensure the reader sees the fully
initialised 'hyp_vcpu' object even if there were a lockless path or
if the lock's own ordering guarantees were insufficient for nested
object initialization.
Fixes:
49af6ddb8e5c ("KVM: arm64: Add infrastructure to create and track pKVM instances at EL2")
Reported-by: Ben Simner <ben.simner@cl.cam.ac.uk>
Co-developed-by: Will Deacon <willdeacon@google.com>
Signed-off-by: Will Deacon <willdeacon@google.com>
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://patch.msgid.link/20260424084908.370776-6-tabba@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org
Fuad Tabba [Fri, 24 Apr 2026 08:49:06 +0000 (09:49 +0100)]
KVM: arm64: Fix kvm_vcpu_initialized() macro parameter
The macro is defined with parameter 'v' but the body references the
literal token 'vcpu' instead, causing it to silently operate on whatever
'vcpu' resolves to in the caller's scope rather than the value passed by
the caller. All current call sites happen to use a variable named 'vcpu',
so the bug is latent.
Fixes:
e016333745c7 ("KVM: arm64: Only reset vCPU-scoped feature ID regs once")
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://patch.msgid.link/20260424084908.370776-5-tabba@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org
Fuad Tabba [Fri, 24 Apr 2026 08:49:05 +0000 (09:49 +0100)]
KVM: arm64: Fix FEAT_SPE_FnE to use PMSIDR_EL1.FnE, not PMSVer
FEAT_SPE_FnE is architecturally detected via PMSIDR_EL1.FnE [6], not
ID_AA64DFR0_EL1.PMSVer. The FEAT_X macro form (register, field, value)
cannot encode a PMSIDR_EL1-based feature, so FEAT_SPE_FnE was defined
identically to FEAT_SPEv1p2 (ID_AA64DFR0_EL1, PMSVer, V1P2), producing
a duplicate that used PMSVer >= V1P2 as a proxy.
Replace the macro with feat_spe_fne(), following the same pattern as
the sibling feat_spe_fds(): guard on FEAT_SPEv1p2 and read
PMSIDR_EL1.FnE [6] directly. Wire the two NEEDS_FEAT consumers to use
the new function.
Remove the now-unused FEAT_SPE_FnE macro.
Fixes:
63d423a7635b ("KVM: arm64: Switch to table-driven FGU configuration")
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://patch.msgid.link/20260424084908.370776-4-tabba@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org
Fuad Tabba [Fri, 24 Apr 2026 08:49:04 +0000 (09:49 +0100)]
KVM: arm64: Fix typo in feature check comments
Revists -> Revisit. The following patch will add another similar line.
No functional change intended.
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://patch.msgid.link/20260424084908.370776-3-tabba@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
Fuad Tabba [Fri, 24 Apr 2026 08:49:03 +0000 (09:49 +0100)]
KVM: arm64: Fix FEAT_Debugv8p9 to check DebugVer, not PMUVer
FEAT_Debugv8p9 is incorrectly defined against ID_AA64DFR0_EL1.PMUVer
instead of ID_AA64DFR0_EL1.DebugVer. All three consumers of the macro
gate features that are architecturally tied to FEAT_Debugv8p9
(DebugVer = 0b1011, DDI0487 M.b A2.2.10):
- HDFGRTR2_EL2.nMDSELR_EL1, HDFGWTR2_EL2.nMDSELR_EL1: MDSELR_EL1
is present only when FEAT_Debugv8p9 is implemented (D24.3.21).
- MDCR_EL2.EBWE: the Extended Breakpoint and Watchpoint Enable bit
is RES0 unless FEAT_Debugv8p9 is implemented (D24.3.17).
Neither register has any dependency on PMUVer.
FEAT_Debugv8p9 and FEAT_PMUv3p9 are independent. Per DDI0487 M.b
A2.2.10, FEAT_Debugv8p9 is unconditionally mandatory from Armv8.9,
whereas FEAT_PMUv3p9 is mandatory only when FEAT_PMUv3 is implemented.
An Armv8.9 CPU without a PMU has DebugVer = 0b1011 but PMUVer = 0b0000,
so the wrong field check would cause KVM to incorrectly treat EBWE and
MDSELR_EL1 as RES0 on such hardware.
Fixes:
4bc0fe089840 ("KVM: arm64: Add sanitisation for FEAT_FGT2 registers")
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://patch.msgid.link/20260424084908.370776-2-tabba@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org
Sebastian Ene [Wed, 8 Apr 2026 11:41:18 +0000 (11:41 +0000)]
KVM: arm64: Reject non compliant SMCCC function calls in pKVM
Prevent the propagation of a function-id that has the top bits set since
this is not compliant with the SMCCC spec and can overlap with the
already known function-id decoders. (eg. if we invoke an smc with
0xffffffffc4000012 it will be decoded as a PSCI reset call). Instead,
make it clear that we don't support it and return an error.
Signed-off-by: Sebastian Ene <sebastianene@google.com>
Link: https://patch.msgid.link/20260408114118.422604-1-sebastianene@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
David Woodhouse [Tue, 7 Apr 2026 20:27:02 +0000 (21:27 +0100)]
KVM: arm64: vgic: Fix IIDR revision field extracted from wrong value
The uaccess write handlers for GICD_IIDR in both GICv2 and GICv3
extract the revision field from 'reg' (the current IIDR value read back
from the emulated distributor) instead of 'val' (the value userspace is
trying to write). This means userspace can never actually change the
implementation revision — the extracted value is always the current one.
Fix the FIELD_GET to use 'val' so that userspace can select a different
revision for migration compatibility.
Fixes:
49a1a2c70a7f ("KVM: arm64: vgic-v3: Advertise GICR_CTLR.{IR, CES} as a new GICD_IIDR revision")
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Link: https://patch.msgid.link/20260407210949.2076251-2-dwmw2@infradead.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
Cc: stable@vger.kernel.org
Dave Airlie [Fri, 24 Apr 2026 03:17:50 +0000 (13:17 +1000)]
Merge tag 'drm-misc-fixes-2026-04-23' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes
This week in drm-misc-fixes, we have:
- A patch to raise the vblank timeout to avoid it on virtual drivers
- a state check fix for stm_lvds
- a use-after-free fix for dma-buf
- a mapping fix for panthor
- a device_node reference leak fix for arcgpu
- a bridge reference leak fix for dw-mipi-dsi
- a sparse warning fix for dma-fence
- a kconfig fix for hv
- a memory leak fix for nouveau
- a fix to duplicate colorop when duplicating states
- a panel initialisation order fix for visionox-rm69299
- a fix to prevent an infinite loop for v3d
- an overflow fix for nouveau
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <mripard@redhat.com>
Link: https://patch.msgid.link/20260423-realistic-eager-reindeer-4dacf7@houat
Linus Torvalds [Fri, 24 Apr 2026 00:08:04 +0000 (17:08 -0700)]
Merge tag 'vfs-7.1-rc1.fixes' of git://git./linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
- eventpoll: fix ep_remove() UAF and follow-up cleanup
- fs: aio: set VMA_DONTCOPY_BIT in mmap to fix NULL-pointer-dereference
error
- writeback: Fix use after free in inode_switch_wbs_work_fn()
- fuse: reject oversized dirents in page cache
- fs: aio: reject partial mremap to avoid Null-pointer-dereference
error
- nstree: fix func. parameter kernel-doc warnings
- fs: Handle multiply claimed blocks more gracefully with mmb
* tag 'vfs-7.1-rc1.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
eventpoll: drop vestigial epi->dying flag
eventpoll: drop dead bool return from ep_remove_epi()
eventpoll: refresh eventpoll_release() fast-path comment
eventpoll: move f_lock acquisition into ep_remove_file()
eventpoll: fix ep_remove struct eventpoll / struct file UAF
eventpoll: move epi_fget() up
eventpoll: rename ep_remove_safe() back to ep_remove()
eventpoll: drop vestigial __ prefix from ep_remove_{file,epi}()
eventpoll: kill __ep_remove()
eventpoll: split __ep_remove()
eventpoll: use hlist_is_singular_node() in __ep_remove()
fs: Handle multiply claimed blocks more gracefully with mmb
nstree: fix func. parameter kernel-doc warnings
fs: aio: reject partial mremap to avoid Null-pointer-dereference error
fuse: reject oversized dirents in page cache
writeback: Fix use after free in inode_switch_wbs_work_fn()
fs: aio: set VMA_DONTCOPY_BIT in mmap to fix NULL-pointer-dereference error
Linus Torvalds [Fri, 24 Apr 2026 00:04:18 +0000 (17:04 -0700)]
Merge tag 'v7.1-rc-part2-ksmbd-fixes' of git://git.samba.org/ksmbd
Pull more smb server updates from Steve French:
- move fs/smb/common/smbdirect to fs/smb/smbdirect
- change signature calc to use AES-CMAC library, simpler and faster
- invalid signature fix
- multichannel fix
- open create options fix
- fix durable handle leak
- cap maximum lock count to avoid potential denial of service
- four connection fixes: connection free and session destroy IDA fixes,
refcount fix, connection leak fix, max_connections off by one fix
- IPC validation fix
- fix out of bounds write in getting xattrs
- fix use after free in durable handle reconnect
- three ACL fixes: fix potential ACL overflow, harden num_aces check,
and fix minimum ACE size check
* tag 'v7.1-rc-part2-ksmbd-fixes' of git://git.samba.org/ksmbd:
smb: smbdirect: move fs/smb/common/smbdirect/ to fs/smb/smbdirect/
smb: server: stop sending fake security descriptors
ksmbd: scope conn->binding slowpath to bound sessions only
ksmbd: fix CreateOptions sanitization clobbering the whole field
ksmbd: fix durable fd leak on ClientGUID mismatch in durable v2 open
ksmbd: fix O(N^2) DoS in smb2_lock via unbounded LockCount
ksmbd: destroy async_ida in ksmbd_conn_free()
ksmbd: destroy tree_conn_ida in ksmbd_session_destroy()
ksmbd: Use AES-CMAC library for SMB3 signature calculation
ksmbd: reset rcount per connection in ksmbd_conn_wait_idle_sess_id()
ksmbd: fix out-of-bounds write in smb2_get_ea() EA alignment
ksmbd: use check_add_overflow() to prevent u16 DACL size overflow
ksmbd: fix use-after-free in smb2_open during durable reconnect
ksmbd: validate num_aces and harden ACE walk in smb_inherit_dacl()
smb: server: fix max_connections off-by-one in tcp accept path
ksmbd: require minimum ACE size in smb_check_perm_dacl()
ksmbd: validate response sizes in ipc_validate_msg()
smb: server: fix active_num_conn leak on transport allocation failure
Linus Torvalds [Thu, 23 Apr 2026 23:59:55 +0000 (16:59 -0700)]
Merge tag 'v7.1-rc1-part3-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
- Four bug fixes: OOB read in ioctl query info, 3 ACL fixes
- SMB1 Unix extensions mount fix
- Four crypto improvements: move to AES-CMAC library, simpler and faster
- Remove drop_dir_cache to avoid potential crash, and move to /procfs
- Seven SMB3.1.1 compression fixes
* tag 'v7.1-rc1-part3-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
smb: client: Drop 'allocate_crypto' arg from smb*_calc_signature()
smb: client: Make generate_key() return void
smb: client: Remove obsolete cmac(aes) allocation
smb: client: Use AES-CMAC library for SMB3 signature calculation
smb: common: add SMB3_COMPRESS_MAX_ALGS
smb: client: compress: add code docs to lz77.c
smb: client: compress: LZ77 optimizations
smb: client: compress: increase LZ77_MATCH_MAX_DIST
smb: client: compress: fix counting in LZ77 match finding
smb: client: compress: fix buffer overrun in lz77_compress()
smb: client: scope end_of_dacl to CIFS_DEBUG2 use in parse_dacl
smb: client: fix (remove) drop_dir_cache module parameter
smb: client: require a full NFS mode SID before reading mode bits
smb: client: validate the whole DACL before rewriting it in cifsacl
smb: client: fix OOB read in smb2_ioctl_query_info QUERY_INFO path
cifs: update internal module version number
smb: client: compress: fix bad encoding on last LZ77 flag
smb: client: fix dir separator in SMB1 UNIX mounts
Linus Torvalds [Thu, 23 Apr 2026 23:50:42 +0000 (16:50 -0700)]
Merge tag 'net-7.1-rc1' of git://git./linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from Netfilter.
Steady stream of fixes. Last two weeks feel comparable to the two
weeks before the merge window. Lots of AI-aided bug discovery. A newer
big source is Sashiko/Gemini (Roman Gushchin's system), which points
out issues in existing code during patch review (maybe 25% of fixes
here likely originating from Sashiko). Nice thing is these are often
fixed by the respective maintainers, not drive-bys.
Current release - new code bugs:
- kconfig: MDIO_PIC64HPSC should depend on ARCH_MICROCHIP
Previous releases - regressions:
- add async ndo_set_rx_mode and switch drivers which we promised to
be called under the per-netdev mutex to it
- dsa: remove duplicate netdev_lock_ops() for conduit ethtool ops
- hv_sock: report EOF instead of -EIO for FIN
- vsock/virtio: fix MSG_PEEK calculation on bytes to copy
Previous releases - always broken:
- ipv6: fix possible UAF in icmpv6_rcv()
- icmp: validate reply type before using icmp_pointers
- af_unix: drop all SCM attributes for SOCKMAP
- netfilter: fix a number of bugs in the osf (OS fingerprinting)
- eth: intel: fix timestamp interrupt configuration for E825C
Misc:
- bunch of data-race annotations"
* tag 'net-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (148 commits)
rxrpc: Fix error handling in rxgk_extract_token()
rxrpc: Fix re-decryption of RESPONSE packets
rxrpc: Fix rxrpc_input_call_event() to only unshare DATA packets
rxrpc: Fix missing validation of ticket length in non-XDR key preparsing
rxgk: Fix potential integer overflow in length check
rxrpc: Fix conn-level packet handling to unshare RESPONSE packets
rxrpc: Fix potential UAF after skb_unshare() failure
rxrpc: Fix rxkad crypto unalignment handling
rxrpc: Fix memory leaks in rxkad_verify_response()
net: rds: fix MR cleanup on copy error
m68k: mvme147: Make me the maintainer
net: txgbe: fix firmware version check
selftests/bpf: check epoll readiness during reuseport migration
tcp: call sk_data_ready() after listener migration
vhost_net: fix sleeping with preempt-disabled in vhost_net_busy_poll()
ipv6: Cap TLV scan in ip6_tnl_parse_tlv_enc_lim
tipc: fix double-free in tipc_buf_append()
llc: Return -EINPROGRESS from llc_ui_connect()
ipv4: icmp: validate reply type before using icmp_pointers
selftests/net: packetdrill: cover RFC 5961 5.2 challenge ACK on both edges
...
Linus Torvalds [Thu, 23 Apr 2026 23:45:17 +0000 (16:45 -0700)]
Merge tag 'i2c-for-7.1-rc1-part2' of git://git./linux/kernel/git/wsa/linux
Pull more i2c updates from Wolfram Sang:
- cx92755: convert I2C bindings to DT schema
- mediatek: add optional bus power management during transfers
- pxa: handle early bus busy condition
- MAINTAINERS: update I2C RUST entry
* tag 'i2c-for-7.1-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
MAINTAINERS: add Rust I2C tree and update Igor Korotin's email
i2c: mediatek: add bus regulator control for power saving
dt-bindings: i2c: cnxt,cx92755-i2c: Convert to DT schema
i2c: pxa: handle 'Early Bus Busy' condition on Armada 3700
Linus Torvalds [Thu, 23 Apr 2026 23:40:03 +0000 (16:40 -0700)]
Merge tag 'xtensa-
20260422' of https://github.com/jcmvbkbc/linux-xtensa
Pull Xtensa updates from Max Filippov:
- use register_sys_off_handler(SYS_OFF_MODE_RESTART) instead of
the deprecated register_restart_handler()
- drop custom ucontext.h and reuse asm-generic ucontext.h
* tag 'xtensa-
20260422' of https://github.com/jcmvbkbc/linux-xtensa:
xtensa: uapi: Reuse asm-generic ucontext.h
xtensa: xtfpga: Use register_sys_off_handler(SYS_OFF_MODE_RESTART)
xtensa: xt2000: Use register_sys_off_handler(SYS_OFF_MODE_RESTART)
xtensa: ISS: Use register_sys_off_handler(SYS_OFF_MODE_RESTART)
Dave Airlie [Thu, 23 Apr 2026 23:17:31 +0000 (09:17 +1000)]
Merge tag 'amd-drm-fixes-7.1-2026-04-23' of https://gitlab.freedesktop.org/agd5f/linux into drm-next
amd-drm-fixes-7.1-2026-04-23:
amdgpu:
- DC idle state manager fix
- ASPM fix
- GPUVM SVM fix
- DCE 6 fix
amdkfd:
- num_of_nodes bounds check fix
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patch.msgid.link/20260423170129.2345978-1-alexander.deucher@amd.com
Dave Airlie [Thu, 23 Apr 2026 23:16:33 +0000 (09:16 +1000)]
Merge tag 'drm-misc-next-fixes-2026-04-23' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next
Short summary of fixes pull:
rcar-du:
- fix NULL-ptr crash
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/20260423130852.GA114622@linux.fritz.box
Jakub Kicinski [Thu, 23 Apr 2026 21:54:20 +0000 (14:54 -0700)]
Merge branch 'remove-a-number-of-isa-and-pcmcia-ethernet-drivers'
Andrew Lunn says:
====================
Remove a number of ISA and PCMCIA Ethernet drivers
These old drivers have not been much of a Maintenance burden until
recently. Now there are more newbies using AI and fuzzers finding
issues, resulting in more work for Maintainers. Fixing these old
drivers make little sense, if it is not clear they have users.
These mostly ISA and PCMCIA Ethernet devices, mostly from the last
century, a couple from 2001 or 2002. It seems unlikely they are still
used. However, remove them one patch at a time so they can be brought
back if somebody still has the hardware, runs modern kernels and wants
to take up the roll of driver Maintainer.
====================
Link: https://patch.msgid.link/20260422-v7-0-0-net-next-driver-removal-v1-v2-0-08a5b59784d5@lunn.ch
Signed-off-by: Jakub Kicinski <kuba@kernel.org>