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commit 010b7723c0a3b9ad58f50b715dbe2e7781d29400 upstream.
If time slice extensions have been disabled on the kernel command line,
then advertising them in RSEQ flags is wrong.
Adjust the conditionals to reflect reality, fixup the misleading comments
about the gap of these flags and the rseq::flags field.
Fixes: d6200245c75e ("rseq: Allow registering RSEQ with slice extension")
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Link: https://patch.msgid.link/20260428224427.437059375%40kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 7deba791ad495ce1d7921683f4f7d1190fa210d1 upstream.
Incrementally consumed buffer rings are generally fully consumed, but
it's quite possible that the application has a minimum size it needs to
meet to avoid truncation. Currently that minimum limit is 1 byte, but
this should be a setting that is the hands of the application. For
recvmsg multishot, a prime use case for incrementally consumed buffers,
the application may get spurious -EFAULT returned at the end of an
incrementally consumed buffer, as less space is available than the
headers need.
Grab a u32 field in struct io_uring_buf_reg, which the application can
use to inform the kernel of the minimum size that should be available
in an incrementally consumed buffer. If less than that is available,
the current buffer is fully processed and the next one will be picked.
Cc: stable@vger.kernel.org
Fixes: ae98dbf43d75 ("io_uring/kbuf: add support for incremental buffer consumption")
Link: https://github.com/axboe/liburing/issues/1433
Signed-off-by: Martin Michaelis <code@mgjm.de>
[axboe: write commit message, change io_buffer_list member name]
Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e75e38055b9df5eafd663c6db00e634f534dc426 upstream.
LANDLOCK_RESTRICT_SELF_TSYNC does not allow
LANDLOCK_RESTRICT_SELF_LOG_SUBDOMAINS_OFF with ruleset_fd=-1, preventing
a multithreaded process from atomically propagating subdomain log muting
to all threads without creating a domain layer. Relax the fd=-1
condition to accept TSYNC alongside LOG_SUBDOMAINS_OFF, and update the
documentation accordingly.
Add flag validation tests for all TSYNC combinations with ruleset_fd=-1,
and audit tests verifying both transition directions: muting via TSYNC
(logged to not logged) and override via TSYNC (not logged to logged).
Cc: Günther Noack <gnoack@google.com>
Cc: stable@vger.kernel.org
Fixes: 42fc7e6543f6 ("landlock: Multithreading support for landlock_restrict_self()")
Reviewed-by: Günther Noack <gnoack3000@gmail.com>
Link: https://lore.kernel.org/r/20260407164107.2012589-2-mic@digikod.net
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 404cd6bffe17e25e0f94ed2775ffdd6cd10ac3fd upstream.
When registering VTL0 memory via MSHV_ADD_VTL0_MEMORY, the kernel
computes pgmap->vmemmap_shift as the number of trailing zeros in the
OR of start_pfn and last_pfn, intending to use the largest compound
page order both endpoints are aligned to.
However, this value is not clamped to MAX_FOLIO_ORDER, so a
sufficiently aligned range (e.g. physical range
[0x800000000000, 0x800080000000), corresponding to start_pfn=0x800000000
with 35 trailing zeros) can produce a shift larger than what
memremap_pages() accepts, triggering a WARN and returning -EINVAL:
WARNING: ... memremap_pages+0x512/0x650
requested folio size unsupported
The MAX_FOLIO_ORDER check was added by
commit 646b67d57589 ("mm/memremap: reject unreasonable folio/compound
page sizes in memremap_pages()").
Fix this by clamping vmemmap_shift to MAX_FOLIO_ORDER so we always
request the largest order the kernel supports, in those cases, rather
than an out-of-range value.
Also fix the error path to propagate the actual error code from
devm_memremap_pages() instead of hard-coding -EFAULT, which was
masking the real -EINVAL return.
Fixes: 7bfe3b8ea6e3 ("Drivers: hv: Introduce mshv_vtl driver")
Cc: stable@vger.kernel.org
Signed-off-by: Naman Jain <namjain@linux.microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pull kvm fixes from Paolo Bonzini:
"s390:
- vsie: Fix races with partial gmap invalidations
x86:
- Use __DECLARE_FLEX_ARRAY() for UAPI structures with VLAs"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: s390: vsie: Fix races with partial gmap invalidations
KVM: x86: Use __DECLARE_FLEX_ARRAY() for UAPI structures with VLAs
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KVM x86 fixes for 7.1
Declare flexible arrays in uAPI structures using __DECLARE_FLEX_ARRAY() so
that KVM's uAPI headers can be included in C++ projects.
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley:
"Before v7.0 is released, fix a few issues with the CFI patchset,
merged earlier in v7.0-rc, that primarily affect interfaces to
non-kernel code:
- Improve the prctl() interface for per-task indirect branch landing
pad control to expand abbreviations and to resemble the speculation
control prctl() interface
- Expand the "LP" and "SS" abbreviations in the ptrace uapi header
file to "branch landing pad" and "shadow stack", to improve
readability
- Fix a typo in a CFI-related macro name in the ptrace uapi header
file
- Ensure that the indirect branch tracking state and shadow stack
state are unlocked immediately after an exec() on the new task so
that libc subsequently can control it
- While working in this area, clean up the kernel-internal,
cross-architecture prctl() function names by expanding the
abbreviations mentioned above"
* tag 'riscv-for-linus-v7.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
prctl: cfi: change the branch landing pad prctl()s to be more descriptive
riscv: ptrace: cfi: expand "SS" references to "shadow stack" in uapi headers
prctl: rename branch landing pad implementation functions to be more explicit
riscv: ptrace: expand "LP" references to "branch landing pads" in uapi headers
riscv: cfi: clear CFI lock status in start_thread()
riscv: ptrace: cfi: fix "PRACE" typo in uapi header
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git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID fixes from Jiri Kosina:
- handling of new keycodes for contextual AI usages (Akshai Murari)
- fix for UAF in hid-roccat (Benoît Sevens)
- deduplication of error logging in amd_sfh (Maximilian Pezzullo)
- various device-specific quirks and device ID additions (Even Xu, Lode
Willems, Leo Vriska)
* tag 'hid-for-linus-2026040801' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
Input: add keycodes for contextual AI usages (HUTRR119)
HID: Kysona: Add support for VXE Dragonfly R1 Pro
HID: amd_sfh: don't log error when device discovery fails with -EOPNOTSUPP
HID: quirks: add HID_QUIRK_ALWAYS_POLL for 8BitDo Pro 3
HID: roccat: fix use-after-free in roccat_report_event
HID: Intel-thc-hid: Intel-quickspi: Add NVL Device IDs
HID: Intel-thc-hid: Intel-quicki2c: Add NVL Device IDs
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Per Linus' comments requesting the replacement of "INDIR_BR_LP" in the
indirect branch tracking prctl()s with something more readable, and
suggesting the use of the speculation control prctl()s as an exemplar,
reimplement the prctl()s and related constants that control per-task
forward-edge control flow integrity.
This primarily involves two changes. First, the prctls are
restructured to resemble the style of the speculative execution
workaround control prctls PR_{GET,SET}_SPECULATION_CTRL, to make them
easier to extend in the future. Second, the "indir_br_lp" abbrevation
is expanded to "branch_landing_pads" to be less telegraphic. The
kselftest and documentation is adjusted accordingly.
Link: https://lore.kernel.org/linux-riscv/CAHk-=whhSLGZAx3N5jJpb4GLFDqH_QvS07D+6BnkPWmCEzTAgw@mail.gmail.com/
Cc: Deepak Gupta <debug@rivosinc.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Paul Walmsley <pjw@kernel.org>
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HUTRR119 introduces new usages for keys intended to invoke AI agents
based on the current context. These are useful with the increasing
number of operating systems with integrated Large Language Models
Add new key definitions for KEY_ACTION_ON_SELECTION,
KEY_CONTEXTUAL_INSERT and KEY_CONTEXTUAL_QUERY
Signed-off-by: Akshai Murari <akshaim@google.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
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Replace manual range and mask validations with netlink policy
annotations in ctnetlink code paths, so that the netlink core rejects
invalid values early and can generate extack errors.
- CTA_PROTOINFO_TCP_STATE: reject values > TCP_CONNTRACK_SYN_SENT2 at
policy level, removing the manual >= TCP_CONNTRACK_MAX check.
- CTA_PROTOINFO_TCP_WSCALE_ORIGINAL/REPLY: reject values > TCP_MAX_WSCALE
(14). The normal TCP option parsing path already clamps to this value,
but the ctnetlink path accepted 0-255, causing undefined behavior when
used as a u32 shift count.
- CTA_FILTER_ORIG_FLAGS/REPLY_FLAGS: use NLA_POLICY_MASK with
CTA_FILTER_F_ALL, removing the manual mask checks.
- CTA_EXPECT_FLAGS: use NLA_POLICY_MASK with NF_CT_EXPECT_MASK, adding
a new mask define grouping all valid expect flags.
Extracted from a broader nf-next patch by Florian Westphal, scoped to
ctnetlink for the fixes tree.
Fixes: c8e2078cfe41 ("[NETFILTER]: ctnetlink: add support for internal tcp connection tracking flags handling")
Signed-off-by: David Carlier <devnexen@gmail.com>
Co-developed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Pull kvm fixes from Paolo Bonzini:
"Quite a large pull request, partly due to skipping last week and
therefore having material from ~all submaintainers in this one. About
a fourth of it is a new selftest, and a couple more changes are large
in number of files touched (fixing a -Wflex-array-member-not-at-end
compiler warning) or lines changed (reformatting of a table in the API
documentation, thanks rST).
But who am I kidding---it's a lot of commits and there are a lot of
bugs being fixed here, some of them on the nastier side like the
RISC-V ones.
ARM:
- Correctly handle deactivation of interrupts that were activated
from LRs. Since EOIcount only denotes deactivation of interrupts
that are not present in an LR, start EOIcount deactivation walk
*after* the last irq that made it into an LR
- Avoid calling into the stubs to probe for ICH_VTR_EL2.TDS when pKVM
is already enabled -- not only thhis isn't possible (pKVM will
reject the call), but it is also useless: this can only happen for
a CPU that has already booted once, and the capability will not
change
- Fix a couple of low-severity bugs in our S2 fault handling path,
affecting the recently introduced LS64 handling and the even more
esoteric handling of hwpoison in a nested context
- Address yet another syzkaller finding in the vgic initialisation,
where we would end-up destroying an uninitialised vgic with nasty
consequences
- Address an annoying case of pKVM failing to boot when some of the
memblock regions that the host is faulting in are not page-aligned
- Inject some sanity in the NV stage-2 walker by checking the limits
against the advertised PA size, and correctly report the resulting
faults
PPC:
- Fix a PPC e500 build error due to a long-standing wart that was
exposed by the recent conversion to kmalloc_obj(); rip out all the
ugliness that led to the wart
RISC-V:
- Prevent speculative out-of-bounds access using array_index_nospec()
in APLIC interrupt handling, ONE_REG regiser access, AIA CSR
access, float register access, and PMU counter access
- Fix potential use-after-free issues in kvm_riscv_gstage_get_leaf(),
kvm_riscv_aia_aplic_has_attr(), and kvm_riscv_aia_imsic_has_attr()
- Fix potential null pointer dereference in
kvm_riscv_vcpu_aia_rmw_topei()
- Fix off-by-one array access in SBI PMU
- Skip THP support check during dirty logging
- Fix error code returned for Smstateen and Ssaia ONE_REG interface
- Check host Ssaia extension when creating AIA irqchip
x86:
- Fix cases where CPUID mitigation features were incorrectly marked
as available whenever the kernel used scattered feature words for
them
- Validate _all_ GVAs, rather than just the first GVA, when
processing a range of GVAs for Hyper-V's TLB flush hypercalls
- Fix a brown paper bug in add_atomic_switch_msr()
- Use hlist_for_each_entry_srcu() when traversing mask_notifier_list,
to fix a lockdep warning; KVM doesn't hold RCU, just irq_srcu
- Ensure AVIC VMCB fields are initialized if the VM has an in-kernel
local APIC (and AVIC is enabled at the module level)
- Update CR8 write interception when AVIC is (de)activated, to fix a
bug where the guest can run in perpetuity with the CR8 intercept
enabled
- Add a quirk to skip the consistency check on FREEZE_IN_SMM, i.e. to
allow L1 hypervisors to set FREEZE_IN_SMM. This reverts (by
default) an unintentional tightening of userspace ABI in 6.17, and
provides some amount of backwards compatibility with hypervisors
who want to freeze PMCs on VM-Entry
- Validate the VMCS/VMCB on return to a nested guest from SMM,
because either userspace or the guest could stash invalid values in
memory and trigger the processor's consistency checks
Generic:
- Remove a subtle pseudo-overlay of kvm_stats_desc, which, aside from
being unnecessary and confusing, triggered compiler warnings due to
-Wflex-array-member-not-at-end
- Document that vcpu->mutex is take outside of kvm->slots_lock and
kvm->slots_arch_lock, which is intentional and desirable despite
being rather unintuitive
Selftests:
- Increase the maximum number of NUMA nodes in the guest_memfd
selftest to 64 (from 8)"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (43 commits)
KVM: selftests: Verify SEV+ guests can read and write EFER, CR0, CR4, and CR8
Documentation: kvm: fix formatting of the quirks table
KVM: x86: clarify leave_smm() return value
selftests: kvm: add a test that VMX validates controls on RSM
selftests: kvm: extract common functionality out of smm_test.c
KVM: SVM: check validity of VMCB controls when returning from SMM
KVM: VMX: check validity of VMCS controls when returning from SMM
KVM: SVM: Set/clear CR8 write interception when AVIC is (de)activated
KVM: SVM: Initialize AVIC VMCB fields if AVIC is enabled with in-kernel APIC
KVM: x86: Introduce KVM_X86_QUIRK_VMCS12_ALLOW_FREEZE_IN_SMM
KVM: x86: Fix SRCU list traversal in kvm_fire_mask_notifiers()
KVM: VMX: Fix a wrong MSR update in add_atomic_switch_msr()
KVM: x86: hyper-v: Validate all GVAs during PV TLB flush
KVM: x86: synthesize CPUID bits only if CPU capability is set
KVM: PPC: e500: Rip out "struct tlbe_ref"
KVM: PPC: e500: Fix build error due to using kmalloc_obj() with wrong type
KVM: selftests: Increase 'maxnode' for guest_memfd tests
KVM: arm64: pkvm: Don't reprobe for ICH_VTR_EL2.TDS on CPU hotplug
KVM: arm64: vgic: Pick EOIcount deactivations from AP-list tail
KVM: arm64: Remove the redundant ISB in __kvm_at_s1e2()
...
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Commit 94dfc73e7cf4 ("treewide: uapi: Replace zero-length arrays with
flexible-array members") broke the userspace API for C++.
These structures ending in VLAs are typically a *header*, which can be
followed by an arbitrary number of entries. Userspace typically creates
a larger structure with some non-zero number of entries, for example in
QEMU's kvm_arch_get_supported_msr_feature():
struct {
struct kvm_msrs info;
struct kvm_msr_entry entries[1];
} msr_data = {};
While that works in C, it fails in C++ with an error like:
flexible array member 'kvm_msrs::entries' not at end of 'struct msr_data'
Fix this by using __DECLARE_FLEX_ARRAY() for the VLA, which uses [0]
for C++ compilation.
Fixes: 94dfc73e7cf4 ("treewide: uapi: Replace zero-length arrays with flexible-array members")
Cc: stable@vger.kernel.org
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Link: https://patch.msgid.link/3abaf6aefd6e5efeff3b860ac38421d9dec908db.camel@infradead.org
[sean: tag for stable@]
Signed-off-by: Sean Christopherson <seanjc@google.com>
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HEAD
KVM generic changes for 7.0
- Remove a subtle pseudo-overlay of kvm_stats_desc, which, aside from being
unnecessary and confusing, triggered compiler warnings due to
-Wflex-array-member-not-at-end.
- Document that vcpu->mutex is take outside of kvm->slots_lock and
kvm->slots_arch_lock, which is intentional and desirable despite being
rather unintuitive.
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Pull drm fixes from Dave Airlie:
"Weekly fixes pull.
There is one mm fix in here for a HMM livelock triggered by the xe
driver tests. Otherwise it's a pretty wide range of fixes across the
board, ttm UAF regression fix, amdgpu fixes, nouveau doesn't crash my
laptop anymore fix, and a fair bit of misc.
Seems about right for rc3.
mm:
- mm: Fix a hmm_range_fault() livelock / starvation problem
pagemap:
- Revert "drm/pagemap: Disable device-to-device migration"
ttm:
- fix function return breaking reclaim
- fix build failure on PREEMPT_RT
- fix bo->resource UAF
dma-buf:
- include ioctl.h in uapi header
sched:
- fix kernel doc warning
amdgpu:
- LUT fixes
- VCN5 fix
- Dispclk fix
- SMU 13.x fix
- Fix race in VM acquire
- PSP 15.x fix
- UserQ fix
amdxdna:
- fix invalid payload for failed command
- fix NULL ptr dereference
- fix major fw version check
- avoid inconsistent fw state on error
i915/display:
- Fix for Lenovo T14 G7 display not refreshing
xe:
- Do not preempt fence signaling CS instructions
- Some leak and finalization fixes
- Workaround fix
nouveau:
- avoid runtime suspend oops when using dp aux
panthor:
- fix gem_sync argument ordering
solomon:
- fix incorrect display output
renesas:
- fix DSI divider programming
ethosu:
- fix job submit error clean-up refcount
- fix NPU_OP_ELEMENTWISE validation
- handle possible underflows in IFM size calcs"
* tag 'drm-fixes-2026-03-07' of https://gitlab.freedesktop.org/drm/kernel: (38 commits)
accel: ethosu: Handle possible underflow in IFM size calculations
accel: ethosu: Fix NPU_OP_ELEMENTWISE validation with scalar
accel: ethosu: Fix job submit error clean-up refcount underflows
accel/amdxdna: Split mailbox channel create function
drm/panthor: Correct the order of arguments passed to gem_sync
Revert "drm/syncobj: Fix handle <-> fd ioctls with dirty stack"
drm/ttm: Fix bo resource use-after-free
nouveau/dpcd: return EBUSY for aux xfer if the device is asleep
accel/amdxdna: Fix major version check on NPU1 platform
drm/amdgpu/userq: refcount userqueues to avoid any race conditions
drm/amdgpu/userq: Consolidate wait ioctl exit path
drm/amdgpu/psp: Use Indirect access address for GFX to PSP mailbox
drm/amdgpu: Fix use-after-free race in VM acquire
drm/amd/pm: remove invalid gpu_metrics.energy_accumulator on smu v13.0.x
drm/xe: Fix memory leak in xe_vm_madvise_ioctl
drm/xe/reg_sr: Fix leak on xa_store failure
drm/xe/xe2_hpg: Correct implementation of Wa_16025250150
drm/xe/gsc: Fix GSC proxy cleanup on early initialization failure
Revert "drm/pagemap: Disable device-to-device migration"
drm/i915/psr: Fix for Panel Replay X granularity DPCD register handling
...
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git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring fixes from Jens Axboe:
- Fix a typo in the mock_file help text
- Fix a comment regarding IORING_SETUP_TASKRUN_FLAG in the
io_uring.h UAPI header
- Use READ_ONCE() for reading refill queue entries
- Reject SEND_VECTORIZED for fixed buffer sends, as it isn't
implemented. Currently this flag is silently ignored
This is in preparation for making these work, but first we
need a fixup so that older kernels will correctly reject them
- Ensure "0" means default for the rx page size
* tag 'io_uring-7.0-20260305' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
io_uring/zcrx: use READ_ONCE with user shared RQEs
io_uring/mock: Fix typo in help text
io_uring/net: reject SEND_VECTORIZED when unsupported
io_uring: correct comment for IORING_SETUP_TASKRUN_FLAG
io_uring/zcrx: don't set rx_page_size when not requested
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https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes
A return type fix for ttm, a display fix for solomon, several misc fixes
for amdxdna, a DSI clock rate fix for rz-du, a uapi fix for syncobj, a
possible build failure fix for dma-buf, a doc warning fix for sched, a
build failure fix for ttm tests, and a crash fix when suspended for
nouveau.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <mripard@redhat.com>
Link: https://patch.msgid.link/20260305-ludicrous-quirky-raven-7cdafd@houat
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include/uapi/linux/dma-buf.h uses several macros from ioctl.h to define
its ioctl commands. However, it does not include ioctl.h itself. So,
if userspace source code tries to include the dma-buf.h file without
including ioctl.h, it can result in build failures.
Therefore, include ioctl.h in the dma-buf UAPI header.
Signed-off-by: Isaac J. Manjarres <isaacmanjarres@google.com>
Reviewed-by: T.J. Mercier <tjmercier@google.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/r/20260303002309.1401849-1-isaacmanjarres@google.com
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
- Fix zero_vruntime tracking when there's a single task running
- Fix slice protection logic
- Fix the ->vprot logic for reniced tasks
- Fix lag clamping in mixed slice workloads
- Fix objtool uaccess warning (and bug) in the
!CONFIG_RSEQ_SLICE_EXTENSION case caused by unexpected un-inlining,
which triggers with older compilers
- Fix a comment in the rseq registration rseq_size bound check code
- Fix a legacy RSEQ ABI quirk that handled 32-byte area sizes
differently, which special size we now reached naturally and want to
avoid. The visible ugliness of the new reserved field will be avoided
the next time the RSEQ area is extended.
* tag 'sched-urgent-2026-03-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
rseq: slice ext: Ensure rseq feature size differs from original rseq size
rseq: Clarify rseq registration rseq_size bound check comment
sched/core: Fix wakeup_preempt's next_class tracking
rseq: Mark rseq_arm_slice_extension_timer() __always_inline
sched/fair: Fix lag clamp
sched/eevdf: Update se->vprot in reweight_entity()
sched/fair: Only set slice protection at pick time
sched/fair: Fix zero_vruntime tracking
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Sync with a recent liburing fix, which corrects the comment explaining
when the IORING_SETUP_TASKRUN_FLAG setup flag is valid to use. May be
use with COOP_TASKRUN or DEFER_TASKRUN, not useful without either of
this task_work mechanisms being used.
Link: https://github.com/axboe/liburing/pull/1543
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci fixes from Bjorn Helgaas:
- Update MAINTAINERS email address (Shawn Guo)
- Refresh cached Endpoint driver MSI Message Address to fix a v7.0
regression when kernel changes the address after firmware has
configured it (Niklas Cassel)
- Flush Endpoint MSI-X writes so they complete before the outbound ATU
entry is unmapped (Niklas Cassel)
- Correct the PCI_CAP_EXP_ENDPOINT_SIZEOF_V2 value, which broke VMM use
of PCI capabilities (Bjorn Helgaas)
* tag 'pci-v7.0-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
PCI: Correct PCI_CAP_EXP_ENDPOINT_SIZEOF_V2 value
PCI: dwc: ep: Flush MSI-X write before unmapping its ATU entry
PCI: dwc: ep: Refresh MSI Message Address cache on change
MAINTAINERS: Update Shawn Guo's address for HiSilicon PCIe controller driver
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fb82437fdd8c ("PCI: Change capability register offsets to hex") incorrectly
converted the PCI_CAP_EXP_ENDPOINT_SIZEOF_V2 value from decimal 52 to hex
0x32:
-#define PCI_CAP_EXP_ENDPOINT_SIZEOF_V2 52 /* v2 endpoints with link end here */
+#define PCI_CAP_EXP_ENDPOINT_SIZEOF_V2 0x32 /* end of v2 EPs w/ link */
This broke PCI capabilities in a VMM because subsequent ones weren't
DWORD-aligned.
Change PCI_CAP_EXP_ENDPOINT_SIZEOF_V2 to the correct value of 0x34.
fb82437fdd8c was from Baruch Siach <baruch@tkos.co.il>, but this was not
Baruch's fault; it's a mistake I made when applying the patch.
Fixes: fb82437fdd8c ("PCI: Change capability register offsets to hex")
Reported-by: David Woodhouse <dwmw2@infradead.org>
Closes: https://lore.kernel.org/all/3ae392a0158e9d9ab09a1d42150429dd8ca42791.camel@infradead.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
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Before rseq became extensible, its original size was 32 bytes even
though the active rseq area was only 20 bytes. This had the following
impact in terms of userspace ecosystem evolution:
* The GNU libc between 2.35 and 2.39 expose a __rseq_size symbol set
to 32, even though the size of the active rseq area is really 20.
* The GNU libc 2.40 changes this __rseq_size to 20, thus making it
express the active rseq area.
* Starting from glibc 2.41, __rseq_size corresponds to the
AT_RSEQ_FEATURE_SIZE from getauxval(3).
This means that users of __rseq_size can always expect it to
correspond to the active rseq area, except for the value 32, for
which the active rseq area is 20 bytes.
Exposing a 32 bytes feature size would make life needlessly painful
for userspace. Therefore, add a reserved field at the end of the
rseq area to bump the feature size to 33 bytes. This reserved field
is expected to be replaced with whatever field will come next,
expecting that this field will be larger than 1 byte.
The effect of this change is to increase the size from 32 to 64 bytes
before we actually have fields using that memory.
Clarify the allocation size and alignment requirements in the struct
rseq uapi comment.
Change the value returned by getauxval(AT_RSEQ_ALIGN) to return the
value of the active rseq area size rounded up to next power of 2, which
guarantees that the rseq structure will always be aligned on the nearest
power of two large enough to contain it, even as it grows. Change the
alignment check in the rseq registration accordingly.
This will minimize the amount of ABI corner-cases we need to document
and require userspace to play games with. The rule stays simple when
__rseq_size != 32:
#define rseq_field_available(field) (__rseq_size >= offsetofend(struct rseq_abi, field))
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260220200642.1317826-3-mathieu.desnoyers@efficios.com
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7.0-rc1 was just released, let's merge it to kick the new release cycle.
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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Pull drm fixes from Dave Airlie:
"This is the fixes and cleanups for the end of the merge window, it's
nearly all amdgpu, with some amdkfd, then a pagemap core fix, i915/xe
display fixes, and some xe driver fixes.
Nothing seems out of the ordinary, except amdgpu is a little more
volume than usual.
pagemap:
- drm/pagemap: pass pagemap_addr by reference
amdgpu:
- DML 2.1 fixes
- Panel replay fixes
- Display writeback fixes
- MES 11 old firmware compat fix
- DC CRC improvements
- DPIA fixes
- XGMI fixes
- ASPM fix
- SMU feature bit handling fixes
- DC LUT fixes
- RAS fixes
- Misc memory leak in error path fixes
- SDMA queue reset fixes
- PG handling fixes
- 5 level GPUVM page table fix
- SR-IOV fix
- Queue reset fix
- SMU 13.x fixes
- DC resume lag fix
- MPO fixes
- DCN 3.6 fix
- VSDB fixes
- HWSS clean up
- Replay fixes
- DCE cursor fixes
- DCN 3.5 SR DDR5 latency fixes
- HPD fixes
- Error path unwind fixes
- SMU13/14 mode1 reset fixes
- PSP 15 updates
- SMU 15 updates
- Sync fix in amdgpu_dma_buf_move_notify()
- HAINAN fix
- PSP 13.x fix
- GPUVM locking fix
- Fixes for DC analog support
- DC FAMS fixes
- DML 2.1 fixes
- eDP fixes
- Misc DC fixes
- Fastboot fix
- 3DLUT fixes
- GPUVM fixes
- 64bpp format fix
- Fix for MacBooks with switchable gfx
amdkfd:
- Fix possible double deletion of validate list
- Event setup fix
- Device disconnect regression fix
- APU GTT as VRAM fix
- Fix piority inversion with MQDs
- NULL check fix
radeon:
- HAINAN fix
i915/xe display:
- Regresion fix for HDR 4k displays (#15503)
- Fixup for Dell XPS 13 7390 eDP rate limit
- Memory leak fix on ACPI _DSM handling
- Add missing slice count check during DP mode validation
xe:
- drm/xe: Prevent VFs from exposing the CCS mode sysfs file
- SRIOV related fixes
- PAT cache fix
- MMIO read fix
- W/a fixes
- Adjust type of xe_modparam.force_vram_bar_size
- Wedge mode fix
- HWMon fix
* tag 'drm-next-2026-02-21' of https://gitlab.freedesktop.org/drm/kernel: (143 commits)
drm/amd/display: Remove unneeded DAC link encoder register
drm/amd/display: Enable DAC in DCE link encoder
drm/amd/display: Set CRTC source for DAC using registers
drm/amd/display: Initialize DAC in DCE link encoder using VBIOS
drm/amd/display: Turn off DAC in DCE link encoder using VBIOS
drm/amd/display: Don't call find_analog_engine() twice
drm/amdgpu: fix 4-level paging if GMC supports 57-bit VA v2
drm/amdgpu: keep vga memory on MacBooks with switchable graphics
drm/amdgpu: Set atomics to true for xgmi
drm/amdkfd: Check for NULL return values
drm/amd/display: Use same max plane scaling limits for all 64 bpp formats
drm/amdgpu: Set vmid0 PAGE_TABLE_DEPTH for GFX12.1
drm/amdkfd: Disable MQD queue priority
drm/amd/display: Remove conditional for shaper 3DLUT power-on
drm/amd/display: Check return of shaper curve to HW format
drm/amd/display: Correct logic check error for fastboot
drm/amd/display: Skip eDP detection when no sink
Revert "drm/amd/display: Add Gfx Base Case For Linear Tiling Handling"
Revert "drm/amd/display: Correct hubp GfxVersion verification"
Revert "drm/amd/display: Add Handling for gfxversion DcGfxBase"
...
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git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull Hyper-V updates from Wei Liu:
- Debugfs support for MSHV statistics (Nuno Das Neves)
- Support for the integrated scheduler (Stanislav Kinsburskii)
- Various fixes for MSHV memory management and hypervisor status
handling (Stanislav Kinsburskii)
- Expose more capabilities and flags for MSHV partition management
(Anatol Belski, Muminul Islam, Magnus Kulke)
- Miscellaneous fixes to improve code quality and stability (Carlos
López, Ethan Nelson-Moore, Li RongQing, Michael Kelley, Mukesh
Rathor, Purna Pavan Chandra Aekkaladevi, Stanislav Kinsburskii, Uros
Bizjak)
- PREEMPT_RT fixes for vmbus interrupts (Jan Kiszka)
* tag 'hyperv-next-signed-20260218' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (34 commits)
mshv: Handle insufficient root memory hypervisor statuses
mshv: Handle insufficient contiguous memory hypervisor status
mshv: Introduce hv_deposit_memory helper functions
mshv: Introduce hv_result_needs_memory() helper function
mshv: Add SMT_ENABLED_GUEST partition creation flag
mshv: Add nested virtualization creation flag
Drivers: hv: vmbus: Simplify allocation of vmbus_evt
mshv: expose the scrub partition hypercall
mshv: Add support for integrated scheduler
mshv: Use try_cmpxchg() instead of cmpxchg()
x86/hyperv: Fix error pointer dereference
x86/hyperv: Reserve 3 interrupt vectors used exclusively by MSHV
Drivers: hv: vmbus: Use kthread for vmbus interrupts on PREEMPT_RT
x86/hyperv: Remove ASM_CALL_CONSTRAINT with VMMCALL insn
x86/hyperv: Use savesegment() instead of inline asm() to save segment registers
mshv: fix SRCU protection in irqfd resampler ack handler
mshv: make field names descriptive in a header struct
x86/hyperv: Update comment in hyperv_cleanup()
mshv: clear eventfd counter on irqfd shutdown
x86/hyperv: Use memremap()/memunmap() instead of ioremap_cache()/iounmap()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from Netfilter.
Current release - new code bugs:
- net: fix backlog_unlock_irq_restore() vs CONFIG_PREEMPT_RT
- eth: mlx5e: XSK, Fix unintended ICOSQ change
- phy_port: correctly recompute the port's linkmodes
- vsock: prevent child netns mode switch from local to global
- couple of kconfig fixes for new symbols
Previous releases - regressions:
- nfc: nci: fix false-positive parameter validation for packet data
- net: do not delay zero-copy skbs in skb_attempt_defer_free()
Previous releases - always broken:
- mctp: ensure our nlmsg responses to user space are zero-initialised
- ipv6: ioam: fix heap buffer overflow in __ioam6_fill_trace_data()
- fixes for ICMP rate limiting
Misc:
- intel: fix PCI device ID conflict between i40e and ipw2200"
* tag 'net-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (85 commits)
net: nfc: nci: Fix parameter validation for packet data
net/mlx5e: Use unsigned for mlx5e_get_max_num_channels
net/mlx5e: Fix deadlocks between devlink and netdev instance locks
net/mlx5e: MACsec, add ASO poll loop in macsec_aso_set_arm_event
net/mlx5: Fix misidentification of write combining CQE during poll loop
net/mlx5e: Fix misidentification of ASO CQE during poll loop
net/mlx5: Fix multiport device check over light SFs
bonding: alb: fix UAF in rlb_arp_recv during bond up/down
bnge: fix reserving resources from FW
eth: fbnic: Advertise supported XDP features.
rds: tcp: fix uninit-value in __inet_bind
net/rds: Fix NULL pointer dereference in rds_tcp_accept_one
octeontx2-af: Fix default entries mcam entry action
net/mlx5e: XSK, Fix unintended ICOSQ change
ipv6: icmp: icmpv6_xrlim_allow() optimization if net.ipv6.icmp.ratelimit is zero
ipv4: icmp: icmpv4_xrlim_allow() optimization if net.ipv4.icmp_ratelimit is zero
ipv6: icmp: remove obsolete code in icmpv6_xrlim_allow()
inet: move icmp_global_{credit,stamp} to a separate cache line
icmp: prevent possible overflow in icmp_global_allow()
selftests/net: packetdrill: add ipv4-mapped-ipv6 tests
...
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Add support for HV_PARTITION_CREATION_FLAG_SMT_ENABLED_GUEST
to allow userspace VMMs to enable SMT for guest partitions.
Expose this via new MSHV_PT_BIT_SMT_ENABLED_GUEST flag in the UAPI.
Without this flag, the hypervisor schedules guest VPs incorrectly,
causing SMT unusable.
Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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Introduce HV_PARTITION_CREATION_FLAG_NESTED_VIRTUALIZATION_CAPABLE to
indicate support for nested virtualization during partition creation.
This enables clearer configuration and capability checks for nested
virtualization scenarios.
Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine updates from Vinod Koul:
"Core:
- Add Frank Li as susbstem reviewer to help with reviews
New Support:
- Mediatek support for Dimensity 6300 and 9200 controller
- Qualcomm Kaanapali and Glymur GPI DMA engine
- Synopsis DW AXI Agilex5
- Renesas RZ/V2N SoC
- Atmel microchip lan9691-dma
- Tegra ADMA tegra264
Updates:
- sg_nents_for_dma() helper use in subsystem
- pm_runtime_mark_last_busy() redundant call update for subsystem
- Residue support for xilinx AXIDMA driver
- Intel Max SGL Size Support and capabilities for DSA3.0
- AXI dma larger than 32bits address support"
* tag 'dmaengine-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (64 commits)
dmaengine: add Frank Li as reviewer
dt-bindings: dma: qcom,gpi: Update max interrupts lines to 16
dmaengine: fsl-edma: don't explicitly disable clocks in .remove()
dmaengine: xilinx: xdma: use sg_nents_for_dma() helper
dmaengine: sh: use sg_nents_for_dma() helper
dmaengine: sa11x0: use sg_nents_for_dma() helper
dmaengine: qcom: bam_dma: use sg_nents_for_dma() helper
dmaengine: qcom: adm: use sg_nents_for_dma() helper
dmaengine: pxa-dma: use sg_nents_for_dma() helper
dmaengine: lgm: use sg_nents_for_dma() helper
dmaengine: k3dma: use sg_nents_for_dma() helper
dmaengine: dw-axi-dmac: use sg_nents_for_dma() helper
dmaengine: bcm2835-dma: use sg_nents_for_dma() helper
dmaengine: axi-dmac: use sg_nents_for_dma() helper
dmaengine: altera-msgdma: use sg_nents_for_dma() helper
scatterlist: introduce sg_nents_for_dma() helper
dmaengine: idxd: Add Max SGL Size Support for DSA3.0
dmaengine: idxd: Expose DSA3.0 capabilities through sysfs
dmaengine: sh: rz-dmac: Make channel irq local
dmaengine: pl08x: Fix comment stating the difference between PL080 and PL081
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc/IIO driver updates from Greg KH:
"Here is the big set of char/misc/iio and other smaller driver
subsystem changes for 7.0-rc1. Lots of little things in here,
including:
- Loads of iio driver changes and updates and additions
- gpib driver updates
- interconnect driver updates
- i3c driver updates
- hwtracing (coresight and intel) driver updates
- deletion of the obsolete mwave driver
- binder driver updates (rust and c versions)
- mhi driver updates (causing a merge conflict, see below)
- mei driver updates
- fsi driver updates
- eeprom driver updates
- lots of other small char and misc driver updates and cleanups
All of these have been in linux-next for a while, with no reported
issues"
* tag 'char-misc-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (297 commits)
mux: mmio: fix regmap leak on probe failure
rust_binder: return p from rust_binder_transaction_target_node()
drivers: android: binder: Update ARef imports from sync::aref
rust_binder: fix needless borrow in context.rs
iio: magn: mmc5633: Fix Kconfig for combination of I3C as module and driver builtin
iio: sca3000: Fix a resource leak in sca3000_probe()
iio: proximity: rfd77402: Add interrupt handling support
iio: proximity: rfd77402: Document device private data structure
iio: proximity: rfd77402: Use devm-managed mutex initialization
iio: proximity: rfd77402: Use kernel helper for result polling
iio: proximity: rfd77402: Align polling timeout with datasheet
iio: cros_ec: Allow enabling/disabling calibration mode
iio: frequency: ad9523: correct kernel-doc bad line warning
iio: buffer: buffer_impl.h: fix kernel-doc warnings
iio: gyro: itg3200: Fix unchecked return value in read_raw
MAINTAINERS: add entry for ADE9000 driver
iio: accel: sca3000: remove unused last_timestamp field
iio: accel: adxl372: remove unused int2_bitmask field
iio: adc: ad7766: Use iio_trigger_generic_data_rdy_poll()
iio: magnetometer: Remove IRQF_ONESHOT
...
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git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull more io_uring updates from Jens Axboe:
"This is a mix of cleanups and fixes. No major fixes in here, just a
bunch of little fixes. Some of them marked for stable as it fixes
behavioral issues
- Fix an issue with SOCKET_URING_OP_SETSOCKOPT for netlink sockets,
due to a too restrictive check on it having an ioctl handler
- Remove a redundant SQPOLL check in ring creation
- Kill dead accounting for zero-copy send, which doesn't use ->buf
or ->len post the initial setup
- Fix missing clamp of the allocation hint, which could cause
allocations to fall outside of the range the application asked
for. Still within the allowed limits.
- Fix for IORING_OP_PIPE's handling of direct descriptors
- Tweak to the API for the newly added BPF filters, making them
more future proof in terms of how applications deal with them
- A few fixes for zcrx, fixing a few error handling conditions
- Fix for zcrx request flag checking
- Add support for querying the zcrx page size
- Improve the NO_SQARRAY static branch inc/dec, avoiding busy
conditions causing too much traffic
- Various little cleanups"
* tag 'io_uring-7.0-20260216' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
io_uring/bpf_filter: pass in expected filter payload size
io_uring/bpf_filter: move filter size and populate helper into struct
io_uring/cancel: de-unionize file and user_data in struct io_cancel_data
io_uring/rsrc: improve regbuf iov validation
io_uring: remove unneeded io_send_zc accounting
io_uring/cmd_net: fix too strict requirement on ioctl
io_uring: delay sqarray static branch disablement
io_uring/query: add query.h copyright notice
io_uring/query: return support for custom rx page size
io_uring/zcrx: check unsupported flags on import
io_uring/zcrx: fix post open error handling
io_uring/zcrx: fix sgtable leak on mapping failures
io_uring: use the right type for creds iteration
io_uring/openclose: fix io_pipe_fixed() slot tracking for specific slots
io_uring/filetable: clamp alloc_hint to the configured alloc range
io_uring/rsrc: replace reg buffer bit field with flags
io_uring/zcrx: improve types for size calculation
io_uring/tctx: avoid modifying loop variable in io_ring_add_registered_file
io_uring: simplify IORING_SETUP_DEFER_TASKRUN && !SQPOLL check
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Musl defines its own struct ethhdr and thus defines __UAPI_DEF_ETHHDR to
zero. To avoid struct redefinition errors, user space is therefore
supposed to include netinet/if_ether.h before (or instead of)
linux/if_ether.h. To relieve them from this burden, include the libc
header here if not building for kernel space.
Reported-by: Alyssa Ross <hi@alyssa.is>
Suggested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Florian Westphal <fw@strlen.de>
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It's quite possible that opcodes that have payloads attached to them,
like IORING_OP_OPENAT/OPENAT2 or IORING_OP_SOCKET, that these paylods
can change over time. For example, on the openat/openat2 side, the
struct open_how argument is extensible, and could be extended in the
future to allow further arguments to be passed in.
Allow registration of a cBPF filter to give the size of the filter as
seen by userspace. If that filter is for an opcode that takes extra
payload data, allow it if the application payload expectation is the
same size than the kernels. If that is the case, the kernel supports
filtering on the payload that the application expects. If the size
differs, the behavior depends on the IO_URING_BPF_FILTER_SZ_STRICT flag:
1) If IO_URING_BPF_FILTER_SZ_STRICT is set and the size expectation
differs, fail the attempt to load the filter.
2) If IO_URING_BPF_FILTER_SZ_STRICT isn't set, allow the filter if
the userspace pdu size is smaller than what the kernel offers.
3) Regardless if IO_URING_BPF_FILTER_SZ_STRICT, fail loading the filter
if the userspace pdu size is bigger than what the kernel supports.
An attempt to load a filter due to sizing will error with -EMSGSIZE.
For that error, the registration struct will have filter->pdu_size
populated with the pdu size that the kernel uses.
Reported-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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