Merge tag 'wq-for-7.3-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue fix from Tejun Heo:
- Fix a NULL dereference in the flush dependency check when a worker
flushes outside a work item, such as from the OOM path during worker
creation
* tag 'wq-for-7.3-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: Fix NULL current_pwq deref in flush dependency check
Merge tag 'cgroup-for-7.3-rc4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fix from Tejun Heo:
- A cpuset partition could claim CPUs an ancestor partition already
held exclusively. Restore the rejection an earlier change had turned
into a warning.
* tag 'cgroup-for-7.3-rc4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup/cpuset: Return PERR_NOCPUS in remote_partition_enable() on subpartitions_cpus conflict
Merge tag 'sched_ext-for-7.3-rc4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext
Pull sched_ext fix from Tejun Heo:
- The CPU topology helper for BPF schedulers took no buffer size, so
its structure couldn't grow without breaking schedulers built against
the older layout. Add a size argument.
* tag 'sched_ext-for-7.3-rc4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
sched_ext: Add a size argument to scx_bpf_cid_topo() so struct scx_cid_topo can grow
Merge tag 'x86-urgent-2026-09-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
- Fix preemption bugs in the SVSM vTPM guest implementation
(Melody Wang)
- Fix MCE-triggered hardware debug register corruption on
task migration (Masami Hiramatsu)
* tag 'x86-urgent-2026-09-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce: Fix hardware debug register corruption on task migration
x86/sev: Make vTPM SVSM calls preemption-safe
Merge tag 'sched-urgent-2026-09-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
- Fix LLC mis-scheduling bugs (Tim Chen, Lu Wang)
- Fix cache-grouping related scheduling statistics UAF bugs (Tim Chen)
- Skip kernel threads for cache aware scheduling to rubustify the code
(Chen Yu)
- Refresh LLC capacity across CPU hotplug, to fix capacity
underestimation bug (Davi Chaves Azevedo)
- Account PSI IRQ time to the execution context, not the scheduling
context, to fix proxy scheduling accounting bug (Zhan Xusheng)
* tag 'sched-urgent-2026-09-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/core: Account PSI IRQ time to the execution context, not the scheduling context
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workqueue: Fix NULL current_pwq deref in flush dependency check
check_flush_dependency() uses current_wq_worker() to determine whether
the caller is a workqueue worker and then dereferences worker->current_pwq
to test whether the current workqueue is WQ_MEM_RECLAIM.
current_wq_worker() only means that %current has PF_WQ_WORKER set. A
kworker can reach check_flush_dependency() while it is not executing a
work item. One such path is worker_thread() acting as the pool manager,
where create_worker() does GFP_KERNEL allocation and the allocation path
invokes the OOM notifier. In that state worker->current_pwq is NULL
because current_pwq is set only by process_one_work() and cleared again
after the work function returns.
[ 416.760634][ T375] Call trace:
[ 416.760638][ T375] check_flush_dependency+0x80/0x120 (P)
[ 416.760648][ T375] __flush_work+0x98/0x224
[ 416.760657][ T375] flush_work+0x30/0x44
[ 416.760665][ T375] ...
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sched_ext: Add a size argument to scx_bpf_cid_topo() so struct scx_cid_topo can grow
scx_bpf_cid_topo() copies struct scx_cid_topo into a buffer the BPF program
sized from its own vmlinux.h while the verifier sizes the write from the
running kernel's BTF. The struct may grow and each growth then breaks every
scheduler built against the older layout, rejected at load or written past
its buffer. This is the usual hole for a struct handed to BPF, closed
elsewhere with a size argument, and it was missed here.
Take the buffer size, copy the smaller of it and the kernel's struct and set
the rest to -1. Accesses to the copy are CO-RE relocated, so the struct can
grow by appending fields, which its comment now states. The kfunc changes in
place: the cid interface is still being finalized and no released scheduler
uses the current form.
Fixes: e9b55af47edf ("sched_ext: Add topological CPU IDs (cids)")
Cc: stable at vger.kernel.org # v7.2+
Signed-off-by: Tejun Heo <tj at kernel.org>
Reviewed-by: Andrea Righi <arighi at nvidia.com>
Merge tag 'ata-7.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ata fixes from Niklas Cassel:
- Extend the quirk "no LPM on ATI" quirk, that is currently only
applied for Samsung drives, to include AMD controllers as well.
The AMD AHCI controllers are newer versions of the ATI AHCI
controllers, and these controllers still have LPM issues with
Samsung drives - LPM works with drives from other vendors (me)
- Fix errors in the libata.force parameter documentation (me)
- Verify the sense data descriptor lengths for ATA PASS-THROUGH
command, so that a malicious device cannot write past the buffer
length (Matthias)
- Mention the libata for-next branch in MAINTAINERS such that the
git ls-remote command done by get_maintainer.pl --self-test=scm
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cgroup/cpuset: Return PERR_NOCPUS in remote_partition_enable() on subpartitions_cpus conflict
When a remote partition is created underneath an existing local partition
via a non-partition (PRS_MEMBER) intermediate cgroup, update_prstate() sees
parent->partition_root_state == PRS_MEMBER and calls
remote_partition_enable().
Commit 86888c7bd117 ("cgroup/cpuset: Add warnings to catch inconsistency
in exclusive CPUs") replaced the cpumask_intersects(tmp->new_cpus,
subpartitions_cpus) error check in remote_partition_enable() with
WARN_ON_ONCE(). As a result, remote_partition_enable() emits a warning
and proceeds to enable the remote partition on CPUs that are already
owned by the ancestor local partition in subpartitions_cpus.
This can be reproduced on Linux 7.3.0-rc3 with:
mkdir -p /tmp/cg1
mount -t cgroup2 none /tmp/cg1
echo "+cpuset" > /tmp/cg1/cgroup.subtree_control
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Merge tag 'pci-v7.3-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull PCI fixes from Bjorn Helgaas:
- Make BAR resize work even for devices where no upstream bridge is
visible to the OS, which fixes an amdgpu regression on SolidRun
HoneyComb, which doesn't expose Root Ports to the OS (Liz Fong-Jones)
- Omit bus properties in dynamic OF nodes when a bridge has no
subordinate bus, which fixes early boot hangs caused by NULL pointer
dereferences with CONFIG_PCI_DYNAMIC_OF_NODES enabled (Angel J)
- Disable enhanced atomics on AMD NBIO 7.7 and 7.11 to avoid silent
data corruption on 64-bit DMAs (Mario Limonciello)
* tag 'pci-v7.3-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
x86/PCI: Disable enhanced atomics on AMD NBIO 7.7 and 7.11
PCI: of_property: Omit bus properties without a subordinate bus
PCI: Fix BAR resize for devices on a root bus
Merge tag 'probes-fixes-v7.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probe fixes from Masami Hiramatsu:
- kprobes: Fix permanent hang when flushing the kprobe optimizer
Fix a deadlock when disabling kprobe optimization via sysctl or
debugfs where flushers hung waiting for optimizer_completion.
Replaced the completion with an optimizer_passes counter and
wait_var_event_mutex() under kprobe_mutex so concurrent flushers can
wait and wake up safely.
- fprobe: Terminate the fgraph_data list when the reservation is not
filled
Fix an issue where unused shadow stack data left uninitialized by
fprobe_fgraph_entry() was misparsed as stale fprobe headers on
return. Explicitly write a zero word to terminate the list and update
read_fprobe_header() to handle the zeroed slot properly.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Arm:
- Invalidate the ITS translation cache when the guest changes the
base address of the ITS tables (Fuad Tabba)
- Skip saving ITS devices with device IDs that are out-of-bounds
rather than failing the entire ITS save ioctl (Fuad Tabba)
- Close race between VM teardown and invalidations of nested MMUs
when handling MMU operations that are allowed to block (Lorenzo
Stoakes)
- Various fixes for the handling of the host's untrusted SVE
configuration in pKVM (Fuad Tabba)
- Make sure that empty SMCCC ranges based at 0 are rejected by the
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Merge tag 'kvm-x86-fixes-7.3-rc5' of https://github.com/kvm-x86/linux into HEAD
KVM fixes for 7.3-rcN
- Fix a brown paper bag bug where KVM would incorrectly treat Intel PMU MSRs
as valid on AMD.
- Fix a regression in the hardware disable selftest where it checked the wrong
macro when detecting glibc support (breaks at least musl).
- Never clear KVM_REQ_VM_DEAD so that dead VMs stay dead, which is especially
important for KVM_BUG_ON() flows, which often guard more dangerous bugs.
- Re-pend GET_NESTED_STATE_PAGES if getting the pages fails, to fix a bug
where KVM would let userspace run a broken setup with stale vmcs12 pages.
- Fix a class of bugs where KVM would fail to fill kvm_run exit fields if
getting nested pages failed.
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KVM: SEV: Free have_run_cpus during VM destruction even if VM is no longer SEV
Unconditionally free SEV's "have run CPUs" cpumask in the VM destroy path,
i.e. even for what appear to be non-SEV VMs, as an SEV VM becomes a non-SEV
VM if its state is intra-host migrated. Alternatively, the mask could be
freed in sev_migrate_from() when "converting" the source VM, but that gets
annoying because ideally KVM would nullify the mask to guard against UAF,
and nullifying the mask would need be conditioned on CPUMASK_OFFSTACK=y.
Freeing the mask during sev_migrate_from() is also not robust against other
KVM bugs, though that's kind of a moot point since any such bugs would show
up even if sev->active is never set. I.e. KVM must get that side of things
correct. But, that's not a great reason to add more code just to make
things marginally less robust.
Fixes: 6f38f8c57464 ("KVM: SVM: Flush cache only on CPUs running SEV guest")
Cc: stable at vger.kernel.org
Reported-by: Stefan Teodorescu <fane at google.com>
Signed-off-by: Sean Christopherson <seanjc at google.com>
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KVM: SEV: Do cache maintenance on the source VM during intra-host migration
Manually perform cache maintenance on the source VM during intra-host
migration to ensure no stale data is left in CPU caches after the VM is
destroyed. Because the source VM is "converted" to a non-SEV VM, KVM's
memory reclaim flows won't trigger cache maintenance, e.g. when all guest
memory is reclaimed in response to detaching from the mmu_notifier.
Note, relying on the destination VM to do cache maintenance isn't an option
as KVM doesn't require identical guest memory configurations, i.e. the
source VM may have access to memory that the destination VM does not.
Enforcing equivalent memory configurations is infeasible, as it would
require a *deep* comparison of memslots, e.g. to verify that not only are
the memslot identical, but what the memslots point at is also identical.
Fixes: b56639318bb2 ("KVM: SEV: Add support for SEV intra host migration")
Cc: stable at vger.kernel.org
Reported-by: Stefan Teodorescu <fane at google.com>
Signed-off-by: Sean Christopherson <seanjc at google.com>
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Merge tag 'drm-fixes-2026-09-26' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"While most of this is AI inspired fixes for error handling paths,
leaks and use after frees, there are some normal things.
nouveau has probably the biggest changes with some fixes to stabilise
runtime suspend/resume on 570 firmware which regressed after we moved
from 535, there are some fixes to stackframe issues seen with amdgpu,
and otherwise the usual bunch of i915/xe/amdgpu fixes, and some
virtio-gpu fixes.
Hopefully it will start to quiten down a bit from here.
client:
- fix restore of partially initialized client
i915:
- Fix incorrect RCU teardown order leading to endless loop
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Merge tag 'ipe-pr-20260925' of git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipe
Pull IPE fixes from Fan Wu:
"Two fixes for use-after-free issues found by recent LLM-assisted code
analysis.
- move successful policy load auditing under the new policy
directory's inode lock, preventing a concurrent policy deletion
from freeing the policy while it is still being audited
- protect the dm-verity root hash with RCU, preventing policy
evaluation from racing with root hash replacement during preresume"
* tag 'ipe-pr-20260925' of git://git.kernel.org/pub/scm/linux/kernel/git/wufan/ipe:
ipe: protect the dm-verity root hash with RCU
ipe: fix use-after-free when auditing a newly loaded policy
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Mostly small driver fixes. The biggest fix is the one to the block
zone handling which might trip for real or virtual hardware if the
number of zones is > 2^32"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: megaraid_sas: Protect megasas_get_ctrl_info() in megasas_resume()
scsi: sd_zbc: Reject disks with too many zones
scsi: block: Fix zones_cond out-of-bounds write on zone report
scsi: leapraid: Avoid -Wformat-security warning
scsi: devinfo: Add BLIST_SKIP_IO_HINTS for EMC Symmetrix
scsi: libiscsi_tcp: Check the data direction of a Data-In PDU
scsi: ufs: pltfrm: Add quirk for R-Car S4 lacking lanes-per-direction
scsi: ufs: core: Keep internal commands dispatchable during error handling
ipe: fix use-after-free when auditing a newly loaded policy
new_policy() audits the policy after ipe_new_policyfs_node() publishes it
and drops the new directory's inode lock. A concurrent delete can free
the policy while ipe_audit_policy_load() is still using it.
Audit the successful load under that lock.
Fixes: f44554b5067b ("audit,ipe: add IPE auditing support")
Cc: stable at vger.kernel.org
Assisted-by: LLM
[FW: remove model name according to latest guideline]
Signed-off-by: Fan Wu <wufan at kernel.org>
ipe: protect the dm-verity root hash with RCU
ipe_bdev_setintegrity() frees the old root hash when dm-verity publishes
a new one on ->preresume, while policy evaluation can still be
dereferencing it.
Protect the root hash with RCU. The evaluation path already runs under
rcu_read_lock().
Fixes: e155858dd995 ("ipe: add support for dm-verity as a trust provider")
Cc: stable at vger.kernel.org
Assisted-by: LLM
[FW: remove model name according to latest guideline]
Signed-off-by: Fan Wu <wufan at kernel.org>
Merge tag 'cifs-fixes-7.3-rc5' of https://git.manguebit.org/linux
Pull smb client fixes from Paulo Alcantara:
- Fix leaked server handles and dropped errors in the SMB2 compound
create path: a parsing error reported as success, an earlier CREATE
left open when a later command fails, the cached directory open
losing the FID needed for cleanup, and SMB2_open() not closing the
handle after a create-context parse failure
- Fix out-of-bounds reads when parsing create contexts from a
malicious server: bound each context by its Next field, parse the
lease and QFid contexts from their declared offsets and validate
the POSIX create context length
- Fix a double credit decrement, and its warning, when a compound
send fails and triggers a reconnect; found by syzbot
- Fix a dentry and server handle leak in cifs_atomic_open() when an
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Merge tag 'vfs-7.3-rc5.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
- Revert "put_mnt_ns(): leave mounts connected". This allows the
creation of reference count cycles in a very trivial way. We can't
bring this in until we have fixed the underlying cause
- vfs: Don't create the private nullfs instance for kthreads under
namespace_sem to avoid false lockdeps complaints
- binfmt_misc:
- Copy the name into a stack buffer and look up the copy in
bpf_binprm_select_interp()
- bpf_binprm_set_interp() and bpf_binprm_set_interp_arg(): Check
the private copy instead so the string that gets staged is the
kstring that was checked
- netfs:
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Merge tag 'fs_for_v7.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull isofs fix from Jan Kara:
"A fix for reading tightly packed isofs directories"
* tag 'fs_for_v7.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
isofs: Fix handling of directories with tight blocks
Merge tag 'thermal-7.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control fix from Rafael Wysocki:
"Fix a step-wise thermal governor issue that causes thermal mitigation
to contiune forever after the temperature has dropped below the trip
point threshold in some cases (Manaf Meethalavalappu Pallikunhi)"
* tag 'thermal-7.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
thermal: gov_step_wise: Fix stale mitigation vote with non-zero lower bounds
Merge tag 'pm-7.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"Address a hibernation regression introduced during the 7.2 development
cycle that causes the image memory preallocation to deadlock if it
depends on frozen kernel threads (Florian Schmaus)"
* tag 'pm-7.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: hibernate: Freeze kernel threads after image preallocation
Merge tag 's390-7.3-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Heiko Carstens:
- Fix several bugs in PCI error recovery SCLP reporting: don't report
success on skipped recovery, report errors when no pdev is
associated, add missing device lock, and fix struct pci_dev reference
leak in zpci_report_status()
- Fix several bugs in CIO code: fix use of invalid SCHIB data, guard
PMCW field accesses, check device number valid bit in PMWC before
accessing other fields, and fix NULL pointer dereference in
ccw_device_get_util_str()
- Fix virtual vs physical address confusion in channel measurement
facility code on kernels with CONFIG_RANDOMIZE_IDENTITY_BASE=y
- Fix couple of bugs in s390dbf: fix copy of failed static debug areas,
skip view registration on failure, and reject NULL pointer in
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Merge tag 'gpio-fixes-for-v7.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- fix a regression introduced by moving GPIO hog handling into GPIOLIB
core where of_node_name was used if line name property was missing on
DT systems
- fix kernel stack leak to user-space in error path in GPIO character
device code
- fix runtime PM leaks in gpio-xilinx and gpio-arizona
- fix several register programming bugs in gpio-tps65219
- fix interrupt storm on resume in gpio-mvebu
* tag 'gpio-fixes-for-v7.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: tps65219: Fix TPS65214 GPIO direction programming
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netfs: Fix missing alloc tagging of direct mempool allocations
Commit 1d78d56c43ef ("netfs: Fix folio_queue ENOMEM in writeback by
adding a mempool") added a mempool for the folio_queues and made the
request, subrequest and folio_queue allocations distinguish between
writeback and everything else. Writeback is part of memory reclaim
and must not fail due to ENOMEM, so it allocates under GFP_NOFS
through mempool_alloc(), which may dip into the pool's reserve and,
if that runs empty, wait for elements to be returned. The
GFP_KERNEL paths, which can return -ENOMEM to their callers, invoke
the pool's ->alloc() callback directly instead.
The direct call, however, skips the alloc_hooks() wrapper that the
mempool_alloc() macro provides. The pool callbacks, mempool_alloc_slab()
and mempool_kmalloc(), call kmem_cache_alloc_noprof() and kmalloc_noprof()
and rely on current->alloc_tag having been set by the caller. With
CONFIG_MEM_ALLOC_PROFILING_DEBUG=y this leads to
current->alloc_tag not set
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