Commit Graph

1424174 Commits

Author SHA1 Message Date
Ihor Solodrai
b3dfa128f7 selftests/bpf: Use vmlinux.h in test_xdp_meta
- Replace linux/* includes with vmlinux.h
- Include errno.h
- Include bpf_tracing_net.h for TC_ACT_* and ETH_*
- Use BPF_STDERR instead of BPF_STREAM_STDERR

Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260218215651.2057673-2-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-18 14:58:47 -08:00
Jakub Kicinski
3b39d73cc3 bpftool: Fix truncated netlink dumps
Netlink requires that the recv buffer used during dumps is at least
min(PAGE_SIZE, 8k) (see the man page). Otherwise the messages will
get truncated. Make sure bpftool follows this requirement, avoid
missing information on systems with large pages.

Acked-by: Quentin Monnet <qmo@kernel.org>
Fixes: 7084566a23 ("tools/bpftool: Remove libbpf_internal.h usage in bpftool")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20260217194150.734701-1-kuba@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-17 16:54:03 -08:00
Andrii Nakryiko
593fffb8bc Merge branch 'libbpf-fix-perm-errors-for-ldimm_64_full_range_off'
Emil Tsalapatis says:

====================
libbpf: Fix perm errors for LDIMM_64_FULL_RANGE_OFF

Commit 728ff16791 ("libbpf: Add gating for arena globals relocation feature")
adds a feature flag for testing whether the running kernel supports LDIMM64
instructions with large direct offsets. Fix two edge cases that can
cause unexpected -EPERM errors in two ways:

1) The probe program used for the feature has type TRACEPOINT, but it's
possible the caller does not have permission to load it, even if it is
able to do so for generic BPF programs. Use the SOCKET_FILTER type
instead that requires fewer permissions. This does not affect the check
itself, which will always fail verification anyway.

2) The probe is triggered during bpf_object__collect_relos(), itself
called in bpf_object_open(), to compute the arena relocation offsets of
arena variables. However, the caller may not have permissions to load
BPF programs. This is the case in some systems with the bpftool calls made
by the BPF selftests during compilation, e.g., for skeleton generation.
Move all uses of the feature check to bpf_object_prepare() time instead.

Fixes: 728ff16791 ("libbpf: Add gating for arena globals relocation feature")
Signed-off-by: Emil Tsalapatis <emil@etsalapatis.com>

v2 -> v3: https://lore.kernel.org/bpf/20260214021014.15670-1-emil@etsalapatis.com/

- Only zero out the first byte of the log buffer (Andrii)
- Minimize invocations of the feature gate (Andrii)

v1 -> v2: https://lore.kernel.org/bpf/20260213181752.505318-1-emil@etsalapatis.com/

- Adjust the hash of the original commit post-tree rebase
- Ensure close() is not called on invalid prog_fd in feature probe (Coverity)
====================

Link: https://patch.msgid.link/20260217204345.548648-1-emil@etsalapatis.com
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
2026-02-17 14:20:25 -08:00
Emil Tsalapatis
d7988720ef libbpf: Delay feature gate check until object prepare time
Commit 728ff16791 ("libbpf: Add gating for arena globals relocation feature")
adds a feature gate check that loads a map and BPF program to
test the running kernel supports large direct offsets for LDIMM64
instructions. This check is currently used to calculate arena symbol
offsets during bpf_object__collect_relos, itself called by
bpf_object_open.

However, the program calling bpf_object_open may not have the permissions to
load maps and programs. This is the case with the BPF selftests, where
bpftool is invoked at compilation time during skeleton generation. This
causes errors as the feature gate unexpectedly fails with -EPERM.

Avoid this by moving all the use of the FEAT_LDIMM64_FULL_RANGE_OFF feature gate
to BPF object preparation time instead.

Fixes: 728ff16791 ("libbpf: Add gating for arena globals relocation feature")
Signed-off-by: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20260217204345.548648-3-emil@etsalapatis.com
2026-02-17 14:20:24 -08:00
Emil Tsalapatis
7cefbb47cc libbpf: Do not use PROG_TYPE_TRACEPOINT program for feature gating
Commit 728ff16791 uses a PROG_TYPE_TRACEPOINT BPF test program to
check whether the running kernel supports large LDIMM64 offsets. The
feature gate incorrectly assumes that the program will fail at
verification time with one of two messages, depending on whether the
feature is supported by the running kernel. However,
PROG_TYPE_TRACEPOINT programs may fail to load before verification even
starts, e.g., if the shell does not have the appropriate capabilities.
Use a BPF_PROG_TYPE_SOCKET_FILTER program for the feature gate instead.

Also fix two minor issues. First, ensure the log buffer for the test is
initialized: Failing program load before verification led to libbpf dumping
uninitialized data to stdout. Also, ensure that close() is only called
for program_fd in the probe if the program load actually succeeded. The
call was currently failing silently with -EBADF most of the time.

Fixes: 728ff16791 ("libbpf: Add gating for arena globals relocation feature")
Reported-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20260217204345.548648-2-emil@etsalapatis.com
2026-02-17 14:17:06 -08:00
Anton Protopopov
b0b1a8583d bpf: Add a map/btf from a fd array more consistently
The add_fd_from_fd_array() function takes a file descriptor as a
parameter and tries to add either map or btf to the corresponding
list of used objects. As was reported by Dan Carpenter, since the
commit c81e4322acf0 ("bpf: Fix a potential use-after-free of BTF
object"), the fdget() is called twice on the file descriptor, and
thus userspace, potentially, can replace the file pointed to by the
file descriptor in between the two calls. On practice, this shouldn't
break anything on the kernel side, but for consistency fix the code
such that only one fdget() is executed.

Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/aY689z7gHNv8rgVO@stanley.mountain/
Fixes: ccd2d799ed ("bpf: Fix a potential use-after-free of BTF object")
Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com>
Link: https://lore.kernel.org/r/20260213212949.759321-1-a.s.protopopov@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-13 14:37:02 -08:00
Alexei Starovoitov
de516a9167 Merge branch 'bpf-fsession-support-for-riscv'
Menglong Dong says:

====================
bpf: fsession support for riscv

Implement bpf fsession for the riscv architecture.

Changes v4 -> v3:
* fix the build error
* v3: https://lore.kernel.org/bpf/20260206122002.1494125-1-dongml2@chinatelecom.cn/

Changes v3 -> v2:
* fix some comments.
* v2: https://lore.kernel.org/bpf/20260206115823.1070354-1-dongml2@chinatelecom.cn/T/#t

Changes v2 -> v1:
* use bpf_prog_calls_session_cookie() in invoke_bpf() in the 2nd patch.
* v1: https://lore.kernel.org/bpf/20260203055231.1088479-1-dongml2@chinatelecom.cn/
====================

Link: https://patch.msgid.link/20260208053311.698352-1-dongml2@chinatelecom.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-13 14:14:28 -08:00
Kumar Kartikeya Dwivedi
2669dde7a8 selftests/bpf: Fix map_kptr grace period wait
Commit c27cea4416 ("rcu: Re-implement RCU Tasks Trace in terms of SRCU-fast")
broke map_kptr selftest since it removed the function we were kprobing.
Use a new kfunc that invokes call_rcu_tasks_trace and sets a program
provided pointer to an integer to 1. Technically this can be unsafe if
the memory being written to from the callback disappears, but this is
just for usage in a test where we ensure we spin until we see the value
to be set to 1, so it's ok.

Reported-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Fixes: c27cea4416 ("rcu: Re-implement RCU Tasks Trace in terms of SRCU-fast")
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260211185747.3630539-1-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-13 14:14:27 -08:00
Menglong Dong
0265c1fd91 selftests/bpf: enable fsession_test on riscv64
Now that the RISC-V trampoline JIT supports BPF_TRACE_FSESSION, run
the fsession selftest on riscv64 as well as x86_64.

Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Tested-by: Björn Töpel <bjorn@kernel.org>
Acked-by: Björn Töpel <bjorn@kernel.org>
Link: https://lore.kernel.org/r/20260208053311.698352-4-dongml2@chinatelecom.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Pu Lehui <pulehui@huawei.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-13 14:14:27 -08:00
Ihor Solodrai
48f624c3dc selftests/bpf: Adjust selftest due to function rename
do_filp_open() was renamed in commit
541003b576 ("rename do_filp_open() to do_file_open()")

This broke test_profiler, because it uses a kretprobe on that
function. Fix it by renaming accordingly.

Reported-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Closes: https://lore.kernel.org/bpf/djwjf2vfb7gro3rfag666bojod6ytcectahnb5z6hx2hawimtj@sx47ghzjg4lw/
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://lore.kernel.org/r/20260210235855.215679-1-ihor.solodrai@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-13 14:14:27 -08:00
Menglong Dong
35b3515be0 bpf, riscv: add fsession support for trampolines
Implement BPF_TRACE_FSESSION support in the RISC-V trampoline JIT. The
logic here is similar to what we did in x86_64.

In order to simply the logic, we factor out the function invoke_bpf() for
fentry and fexit.

Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Tested-by: Björn Töpel <bjorn@kernel.org>
Acked-by: Björn Töpel <bjorn@kernel.org>
Link: https://lore.kernel.org/r/20260208053311.698352-3-dongml2@chinatelecom.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Pu Lehui <pulehui@huawei.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-13 14:14:27 -08:00
Anton Protopopov
ccd2d799ed bpf: Fix a potential use-after-free of BTF object
Refcounting in the check_pseudo_btf_id() function is incorrect:
the __check_pseudo_btf_id() function might get called with a zero
refcounted btf. Fix this, and patch related code accordingly.

v3: rephrase a comment (AI)
v2: fix a refcount leak introduced in v1 (AI)

Reported-by: syzbot+5a0f1995634f7c1dadbf@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=5a0f1995634f7c1dadbf
Fixes: 76145f7255 ("bpf: Refactor check_pseudo_btf_id")
Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com>
Link: https://lore.kernel.org/r/20260209132904.63908-1-a.s.protopopov@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-13 14:14:27 -08:00
Menglong Dong
93fd420d71 bpf, riscv: introduce emit_store_stack_imm64() for trampoline
Introduce a helper to store 64-bit immediate on the trampoline stack with
a help of a register.

Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>
Tested-by: Björn Töpel <bjorn@kernel.org>
Acked-by: Björn Töpel <bjorn@kernel.org>
Link: https://lore.kernel.org/r/20260208053311.698352-2-dongml2@chinatelecom.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Pu Lehui <pulehui@huawei.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-13 14:14:27 -08:00
Amery Hung
04999b99e8 libbpf: Fix invalid write loop logic in bpf_linker__add_buf()
Fix bpf_linker__add_buf()'s logic of copying data from memory buffer into
memfd. In the event of short write not writing entire buf_sz bytes into memfd
file, we'll append bytes from the beginning of buf *again* (corrupting ELF
file contents) instead of correctly appending the rest of not-yet-read buf
contents.

Closes: https://github.com/libbpf/libbpf/issues/945
Fixes: 6d5e5e5d7c ("libbpf: Extend linker API to support in-memory ELF files")
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20260209230134.3530521-1-ameryhung@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-13 14:14:27 -08:00
Emil Tsalapatis
728ff16791 libbpf: Add gating for arena globals relocation feature
Add feature gating for the arena globals relocation introduced in
commit c1f61171d4. The commit depends on a previous commit in the
same patchset that is absent from older kernels
(12a1fe6e12 "bpf/verifier: Do not limit maximum direct offset into arena map").

Without this commit, arena globals relocation with arenas >= 512MiB
fails to load and breaks libbpf's backwards compatibility.

Introduce a libbpf feature to check whether the running kernel allows for
full range ldimm64 offset, and only relocate arena globals if it does.

Fixes: c1f61171d4 ("libbpf: Move arena globals to the end of the arena")
Signed-off-by: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20260210184532.255475-1-emil@etsalapatis.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2026-02-13 14:14:27 -08:00
Linus Torvalds
44331bd6a6 Merge tag 'mm-hotfixes-stable-2026-02-13-07-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM fixes from Andrew Morton:
 "Three MM hotfixes, all three are cc:stable"

* tag 'mm-hotfixes-stable-2026-02-13-07-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  procfs: fix possible double mmput() in do_procmap_query()
  mm/page_alloc: skip debug_check_no_{obj,locks}_freed with FPI_TRYLOCK
  mm/hugetlb: restore failed global reservations to subpool
2026-02-13 12:13:27 -08:00
Linus Torvalds
a353e7260b Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio updates from Michael Tsirkin:

 - in-order support in virtio core

 - multiple address space support in vduse

 - fixes, cleanups all over the place, notably dma alignment fixes for
   non-cache-coherent systems

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (59 commits)
  vduse: avoid adding implicit padding
  vhost: fix caching attributes of MMIO regions by setting them explicitly
  vdpa/mlx5: update MAC address handling in mlx5_vdpa_set_attr()
  vdpa/mlx5: reuse common function for MAC address updates
  vdpa/mlx5: update mlx_features with driver state check
  crypto: virtio: Replace package id with numa node id
  crypto: virtio: Remove duplicated virtqueue_kick in virtio_crypto_skcipher_crypt_req
  crypto: virtio: Add spinlock protection with virtqueue notification
  Documentation: Add documentation for VDUSE Address Space IDs
  vduse: bump version number
  vduse: add vq group asid support
  vduse: merge tree search logic of IOTLB_GET_FD and IOTLB_GET_INFO ioctls
  vduse: take out allocations from vduse_dev_alloc_coherent
  vduse: remove unused vaddr parameter of vduse_domain_free_coherent
  vduse: refactor vdpa_dev_add for goto err handling
  vhost: forbid change vq groups ASID if DRIVER_OK is set
  vdpa: document set_group_asid thread safety
  vduse: return internal vq group struct as map token
  vduse: add vq group support
  vduse: add v1 API definition
  ...
2026-02-13 12:02:18 -08:00
Linus Torvalds
cb5573868e Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Paolo Bonzini:
 "Loongarch:

   - Add more CPUCFG mask bits

   - Improve feature detection

   - Add lazy load support for FPU and binary translation (LBT) register
     state

   - Fix return value for memory reads from and writes to in-kernel
     devices

   - Add support for detecting preemption from within a guest

   - Add KVM steal time test case to tools/selftests

  ARM:

   - Add support for FEAT_IDST, allowing ID registers that are not
     implemented to be reported as a normal trap rather than as an UNDEF
     exception

   - Add sanitisation of the VTCR_EL2 register, fixing a number of
     UXN/PXN/XN bugs in the process

   - Full handling of RESx bits, instead of only RES0, and resulting in
     SCTLR_EL2 being added to the list of sanitised registers

   - More pKVM fixes for features that are not supposed to be exposed to
     guests

   - Make sure that MTE being disabled on the pKVM host doesn't give it
     the ability to attack the hypervisor

   - Allow pKVM's host stage-2 mappings to use the Force Write Back
     version of the memory attributes by using the "pass-through'
     encoding

   - Fix trapping of ICC_DIR_EL1 on GICv5 hosts emulating GICv3 for the
     guest

   - Preliminary work for guest GICv5 support

   - A bunch of debugfs fixes, removing pointless custom iterators
     stored in guest data structures

   - A small set of FPSIMD cleanups

   - Selftest fixes addressing the incorrect alignment of page
     allocation

   - Other assorted low-impact fixes and spelling fixes

  RISC-V:

   - Fixes for issues discoverd by KVM API fuzzing in
     kvm_riscv_aia_imsic_has_attr(), kvm_riscv_aia_imsic_rw_attr(), and
     kvm_riscv_vcpu_aia_imsic_update()

   - Allow Zalasr, Zilsd and Zclsd extensions for Guest/VM

   - Transparent huge page support for hypervisor page tables

   - Adjust the number of available guest irq files based on MMIO
     register sizes found in the device tree or the ACPI tables

   - Add RISC-V specific paging modes to KVM selftests

   - Detect paging mode at runtime for selftests

  s390:

   - Performance improvement for vSIE (aka nested virtualization)

   - Completely new memory management. s390 was a special snowflake that
     enlisted help from the architecture's page table management to
     build hypervisor page tables, in particular enabling sharing the
     last level of page tables. This however was a lot of code (~3K
     lines) in order to support KVM, and also blocked several features.
     The biggest advantages is that the page size of userspace is
     completely independent of the page size used by the guest:
     userspace can mix normal pages, THPs and hugetlbfs as it sees fit,
     and in fact transparent hugepages were not possible before. It's
     also now possible to have nested guests and guests with huge pages
     running on the same host

   - Maintainership change for s390 vfio-pci

   - Small quality of life improvement for protected guests

  x86:

   - Add support for giving the guest full ownership of PMU hardware
     (contexted switched around the fastpath run loop) and allowing
     direct access to data MSRs and PMCs (restricted by the vPMU model).

     KVM still intercepts access to control registers, e.g. to enforce
     event filtering and to prevent the guest from profiling sensitive
     host state. This is more accurate, since it has no risk of
     contention and thus dropped events, and also has significantly less
     overhead.

     For more information, see the commit message for merge commit
     bf2c3138ae ("Merge tag 'kvm-x86-pmu-6.20' ...")

   - Disallow changing the virtual CPU model if L2 is active, for all
     the same reasons KVM disallows change the model after the first
     KVM_RUN

   - Fix a bug where KVM would incorrectly reject host accesses to PV
     MSRs when running with KVM_CAP_ENFORCE_PV_FEATURE_CPUID enabled,
     even if those were advertised as supported to userspace,

   - Fix a bug with protected guest state (SEV-ES/SNP and TDX) VMs,
     where KVM would attempt to read CR3 configuring an async #PF entry

   - Fail the build if EXPORT_SYMBOL_GPL or EXPORT_SYMBOL is used in KVM
     (for x86 only) to enforce usage of EXPORT_SYMBOL_FOR_KVM_INTERNAL.
     Only a few exports that are intended for external usage, and those
     are allowed explicitly

   - When checking nested events after a vCPU is unblocked, ignore
     -EBUSY instead of WARNing. Userspace can sometimes put the vCPU
     into what should be an impossible state, and spurious exit to
     userspace on -EBUSY does not really do anything to solve the issue

   - Also throw in the towel and drop the WARN on INIT/SIPI being
     blocked when vCPU is in Wait-For-SIPI, which also resulted in
     playing whack-a-mole with syzkaller stuffing architecturally
     impossible states into KVM

   - Add support for new Intel instructions that don't require anything
     beyond enumerating feature flags to userspace

   - Grab SRCU when reading PDPTRs in KVM_GET_SREGS2

   - Add WARNs to guard against modifying KVM's CPU caps outside of the
     intended setup flow, as nested VMX in particular is sensitive to
     unexpected changes in KVM's golden configuration

   - Add a quirk to allow userspace to opt-in to actually suppress EOI
     broadcasts when the suppression feature is enabled by the guest
     (currently limited to split IRQCHIP, i.e. userspace I/O APIC).
     Sadly, simply fixing KVM to honor Suppress EOI Broadcasts isn't an
     option as some userspaces have come to rely on KVM's buggy behavior
     (KVM advertises Supress EOI Broadcast irrespective of whether or
     not userspace I/O APIC supports Directed EOIs)

   - Clean up KVM's handling of marking mapped vCPU pages dirty

   - Drop a pile of *ancient* sanity checks hidden behind in KVM's
     unused ASSERT() macro, most of which could be trivially triggered
     by the guest and/or user, and all of which were useless

   - Fold "struct dest_map" into its sole user, "struct rtc_status", to
     make it more obvious what the weird parameter is used for, and to
     allow fropping these RTC shenanigans if CONFIG_KVM_IOAPIC=n

   - Bury all of ioapic.h, i8254.h and related ioctls (including
     KVM_CREATE_IRQCHIP) behind CONFIG_KVM_IOAPIC=y

   - Add a regression test for recent APICv update fixes

   - Handle "hardware APIC ISR", a.k.a. SVI, updates in
     kvm_apic_update_apicv() to consolidate the updates, and to
     co-locate SVI updates with the updates for KVM's own cache of ISR
     information

   - Drop a dead function declaration

   - Minor cleanups

  x86 (Intel):

   - Rework KVM's handling of VMCS updates while L2 is active to
     temporarily switch to vmcs01 instead of deferring the update until
     the next nested VM-Exit.

     The deferred updates approach directly contributed to several bugs,
     was proving to be a maintenance burden due to the difficulty in
     auditing the correctness of deferred updates, and was polluting
     "struct nested_vmx" with a growing pile of booleans

   - Fix an SGX bug where KVM would incorrectly try to handle EPCM page
     faults, and instead always reflect them into the guest. Since KVM
     doesn't shadow EPCM entries, EPCM violations cannot be due to KVM
     interference and can't be resolved by KVM

   - Fix a bug where KVM would register its posted interrupt wakeup
     handler even if loading kvm-intel.ko ultimately failed

   - Disallow access to vmcb12 fields that aren't fully supported,
     mostly to avoid weirdness and complexity for FRED and other
     features, where KVM wants enable VMCS shadowing for fields that
     conditionally exist

   - Print out the "bad" offsets and values if kvm-intel.ko refuses to
     load (or refuses to online a CPU) due to a VMCS config mismatch

  x86 (AMD):

   - Drop a user-triggerable WARN on nested_svm_load_cr3() failure

   - Add support for virtualizing ERAPS. Note, correct virtualization of
     ERAPS relies on an upcoming, publicly announced change in the APM
     to reduce the set of conditions where hardware (i.e. KVM) *must*
     flush the RAP

   - Ignore nSVM intercepts for instructions that are not supported
     according to L1's virtual CPU model

   - Add support for expedited writes to the fast MMIO bus, a la VMX's
     fastpath for EPT Misconfig

   - Don't set GIF when clearing EFER.SVME, as GIF exists independently
     of SVM, and allow userspace to restore nested state with GIF=0

   - Treat exit_code as an unsigned 64-bit value through all of KVM

   - Add support for fetching SNP certificates from userspace

   - Fix a bug where KVM would use vmcb02 instead of vmcb01 when
     emulating VMLOAD or VMSAVE on behalf of L2

   - Misc fixes and cleanups

  x86 selftests:

   - Add a regression test for TPR<=>CR8 synchronization and IRQ masking

   - Overhaul selftest's MMU infrastructure to genericize stage-2 MMU
     support, and extend x86's infrastructure to support EPT and NPT
     (for L2 guests)

   - Extend several nested VMX tests to also cover nested SVM

   - Add a selftest for nested VMLOAD/VMSAVE

   - Rework the nested dirty log test, originally added as a regression
     test for PML where KVM logged L2 GPAs instead of L1 GPAs, to
     improve test coverage and to hopefully make the test easier to
     understand and maintain

  guest_memfd:

   - Remove kvm_gmem_populate()'s preparation tracking and half-baked
     hugepage handling. SEV/SNP was the only user of the tracking and it
     can do it via the RMP

   - Retroactively document and enforce (for SNP) that
     KVM_SEV_SNP_LAUNCH_UPDATE and KVM_TDX_INIT_MEM_REGION require the
     source page to be 4KiB aligned, to avoid non-trivial complexity for
     something that no known VMM seems to be doing and to avoid an API
     special case for in-place conversion, which simply can't support
     unaligned sources

   - When populating guest_memfd memory, GUP the source page in common
     code and pass the refcounted page to the vendor callback, instead
     of letting vendor code do the heavy lifting. Doing so avoids a
     looming deadlock bug with in-place due an AB-BA conflict betwee
     mmap_lock and guest_memfd's filemap invalidate lock

  Generic:

   - Fix a bug where KVM would ignore the vCPU's selected address space
     when creating a vCPU-specific mapping of guest memory. Actually
     this bug could not be hit even on x86, the only architecture with
     multiple address spaces, but it's a bug nevertheless"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (267 commits)
  KVM: s390: Increase permitted SE header size to 1 MiB
  MAINTAINERS: Replace backup for s390 vfio-pci
  KVM: s390: vsie: Fix race in acquire_gmap_shadow()
  KVM: s390: vsie: Fix race in walk_guest_tables()
  KVM: s390: Use guest address to mark guest page dirty
  irqchip/riscv-imsic: Adjust the number of available guest irq files
  RISC-V: KVM: Transparent huge page support
  RISC-V: KVM: selftests: Add Zalasr extensions to get-reg-list test
  RISC-V: KVM: Allow Zalasr extensions for Guest/VM
  KVM: riscv: selftests: Add riscv vm satp modes
  KVM: riscv: selftests: add Zilsd and Zclsd extension to get-reg-list test
  riscv: KVM: allow Zilsd and Zclsd extensions for Guest/VM
  RISC-V: KVM: Skip IMSIC update if vCPU IMSIC state is not initialized
  RISC-V: KVM: Fix null pointer dereference in kvm_riscv_aia_imsic_rw_attr()
  RISC-V: KVM: Fix null pointer dereference in kvm_riscv_aia_imsic_has_attr()
  RISC-V: KVM: Remove unnecessary 'ret' assignment
  KVM: s390: Add explicit padding to struct kvm_s390_keyop
  KVM: LoongArch: selftests: Add steal time test case
  LoongArch: KVM: Add paravirt vcpu_is_preempted() support in guest side
  LoongArch: KVM: Add paravirt preempt feature in hypervisor side
  ...
2026-02-13 11:31:15 -08:00
Linus Torvalds
c87c79345e Merge tag 'uml-for-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux
Pull UML updates from Johannes Berg:
 "UML was _really_ quiet, with just four small commits:

   - two signal handling fixes

   - dynamic addition of virtio devices

   - a single code cleanup"

* tag 'uml-for-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux:
  arch/um: remove unused varible err in remove_files_and_dir()
  um: virtio_uml: Support adding devices via mconsole
  um: Handle SIGCHLD in seccomp mode like other IRQ signals
  um: Preserve errno within signal handler
2026-02-13 11:24:38 -08:00
Thomas Weißschuh
b52343d1cb ARM: clean up the memset64() C wrapper
The current logic to split the 64-bit argument into its 32-bit halves is
byte-order specific and a bit clunky.  Use a union instead which is
easier to read and works in all cases.

GCC still generates the same machine code.

While at it, rename the arguments of the __memset64() prototype to
actually reflect their semantics.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-02-13 11:15:05 -08:00
Thomas Weißschuh
cd7a5651db alpha: add missing address argument in call to page_table_check_pte_clear()
After the merge of the alpha and mm trees, this code does not compile,
as a parameter is missing in a call to page_table_check_pte_clear().

The parameter was re-added in commit d7b4b67eb6 ("mm/page_table_check:
reinstate address parameter in [__]page_table_check_pte_clear()").
The alpha-specific code was newly added in commit dd5712f337 ("alpha:
fix user-space corruption during memory compaction").

Fixes: 4cff5c05e0 ("Merge tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm")
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Acked-by: Magnus Lindholm <linmag7@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-02-13 10:44:31 -08:00
Linus Torvalds
cee73b1e84 Merge tag 'riscv-for-linus-7.0-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley:

 - Add support for control flow integrity for userspace processes.

   This is based on the standard RISC-V ISA extensions Zicfiss and
   Zicfilp

 - Improve ptrace behavior regarding vector registers, and add some
   selftests

 - Optimize our strlen() assembly

 - Enable the ISO-8859-1 code page as built-in, similar to ARM64, for
   EFI volume mounting

 - Clean up some code slightly, including defining copy_user_page() as
   copy_page() rather than memcpy(), aligning us with other
   architectures; and using max3() to slightly simplify an expression
   in riscv_iommu_init_check()

* tag 'riscv-for-linus-7.0-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (42 commits)
  riscv: lib: optimize strlen loop efficiency
  selftests: riscv: vstate_exec_nolibc: Use the regular prctl() function
  selftests: riscv: verify ptrace accepts valid vector csr values
  selftests: riscv: verify ptrace rejects invalid vector csr inputs
  selftests: riscv: verify syscalls discard vector context
  selftests: riscv: verify initial vector state with ptrace
  selftests: riscv: test ptrace vector interface
  riscv: ptrace: validate input vector csr registers
  riscv: csr: define vtype register elements
  riscv: vector: init vector context with proper vlenb
  riscv: ptrace: return ENODATA for inactive vector extension
  kselftest/riscv: add kselftest for user mode CFI
  riscv: add documentation for shadow stack
  riscv: add documentation for landing pad / indirect branch tracking
  riscv: create a Kconfig fragment for shadow stack and landing pad support
  arch/riscv: add dual vdso creation logic and select vdso based on hw
  arch/riscv: compile vdso with landing pad and shadow stack note
  riscv: enable kernel access to shadow stack memory via the FWFT SBI call
  riscv: add kernel command line option to opt out of user CFI
  riscv/hwprobe: add zicfilp / zicfiss enumeration in hwprobe
  ...
2026-02-12 19:17:44 -08:00
Linus Torvalds
7563f7e0e9 Merge tag 'for-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel:
 "power-supply core:
   - sysfs: constify pointer passed to dev_attr_psp
   - extend DT binding documentation for battery cells to allow
     describing voltage drop behaviour

  power-supply drivers:
   - multiple: Remove unused gpio include header
   - multiple: Fix potential IRQ use-after-free on driver unload
   - bd71828: Add support for ROHM BD72720
   - misc small fixes

  reset drivers:
   - tdx-ec-poweroff: fix restart"

* tag 'for-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (30 commits)
  power: supply: bd71828: Use dev_err_probe()
  dt-bindings: power: supply: google,goldfish-battery: Convert to DT schema
  power: supply: qcom_battmgr: Recognize "LiP" as lithium-polymer
  power: supply: wm97xx: Use devm_power_supply_register()
  power: supply: wm97xx: Use devm_kcalloc()
  power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler
  power: reset: tdx-ec-poweroff: fix restart
  docs: power: update documentation about removed function
  power: supply: wm97xx: Fix NULL pointer dereference in power_supply_changed()
  MAINTAINERS: adjust file entry in ROHM BD71828 CHARGER
  power: supply: ab8500_chargalg: improve kernel-doc
  power: supply: sysfs: Constify pointer passed to dev_attr_psp()
  power: supply: bq27xxx: fix wrong errno when bus ops are unsupported
  power: reset: nvmem-reboot-mode: respect cell size for nvmem_cell_write
  power: supply: sbs-battery: Fix use-after-free in power_supply_changed()
  power: supply: rt9455: Fix use-after-free in power_supply_changed()
  power: supply: pm8916_lbc: Fix use-after-free in power_supply_changed()
  power: supply: pm8916_bms_vm: Fix use-after-free in power_supply_changed()
  power: supply: pf1550: Fix use-after-free in power_supply_changed()
  power: supply: goldfish: Fix use-after-free in power_supply_changed()
  ...
2026-02-12 18:24:37 -08:00
Linus Torvalds
7449f86baf Merge tag 'nfs-for-7.0-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client updates from Anna Schumaker:
 "New Features:
   - Use an LRU list for returning unused delegations
   - Introduce a KConfig option to disable NFS v4.0 and make NFS v4.1
     the default

  Bugfixes:
   - NFS/localio:
       - Handle short writes by retrying
       - Prevent direct reclaim recursion into NFS via nfs_writepages
       - Use GFP_NOIO and non-memreclaim workqueue in nfs_local_commit
       - Remove -EAGAIN handling in nfs_local_doio()
   - pNFS: fix a missing wake up while waiting on NFS_LAYOUT_DRAIN
   - fs/nfs: Fix a readdir slow-start regression
   - SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path

  Other cleanups and improvements:
   - A few other NFS/localio cleanups
   - Various other delegation handling cleanups from Christoph
   - Unify security_inode_listsecurity() calls
   - Improvements to NFSv4 lease handling
   - Clean up SUNRPC *_debug fields when CONFIG_SUNRPC_DEBUG is not set"

* tag 'nfs-for-7.0-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (60 commits)
  SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path
  nfs: nfs4proc: Convert comma to semicolon
  SUNRPC: Change list definition method
  sunrpc: rpc_debug and others are defined even if CONFIG_SUNRPC_DEBUG unset
  NFSv4: limit lease period in nfs4_set_lease_period()
  NFSv4: pass lease period in seconds to nfs4_set_lease_period()
  nfs: unify security_inode_listsecurity() calls
  fs/nfs: Fix readdir slow-start regression
  pNFS: fix a missing wake up while waiting on NFS_LAYOUT_DRAIN
  NFS: fix delayed delegation return handling
  NFS: simplify error handling in nfs_end_delegation_return
  NFS: fold nfs_abort_delegation_return into nfs_end_delegation_return
  NFS: remove the delegation == NULL check in nfs_end_delegation_return
  NFS: use bool for the issync argument to nfs_end_delegation_return
  NFS: return void from ->return_delegation
  NFS: return void from nfs4_inode_make_writeable
  NFS: Merge CONFIG_NFS_V4_1 with CONFIG_NFS_V4
  NFS: Add a way to disable NFS v4.0 via KConfig
  NFS: Move sequence slot operations into minorversion operations
  NFS: Pass a struct nfs_client to nfs4_init_sequence()
  ...
2026-02-12 17:49:33 -08:00
Linus Torvalds
8429538c2c tools/testing: keep legacy generated files around in .gitignore file
People keep removing generated files from .gitignore files even when the
files stay around.  Please don't do that: just because the file is no
longer being generated doesn't make it magically go away, and doesn't
make it suddenly be something that should now not be ignored any more.

Fixes: dd2c6ec24f ("selftests/mm: remove virtual_address_range test")
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: SeongJae Park <sj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-02-12 17:19:36 -08:00
Linus Torvalds
2c75a8d92c Merge tag 'ata-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ATA updates from Damien Le Moal:

 - Cleanup IRQ masking in the handling of completed report zones
   commands (Niklas)

 - Improve the handling of Thunderbolt attached devices to speed up
   device removal (Henry)

 - Several patches to generalize the existing max_sec quirks to
   facilitates quirking the maximum command size of buggy drives, many
   of which have recently showed up with the recent increase of the
   default max_sectors block limit (Niklas)

 - Cleanup the ahci-platform and sata dt-bindings schema (Rob,
   Manivannan)

 - Improve device node scan in the ahci-dwc driver (Krzysztof)

 - Remove clang W=1 warnings with the ahci-imx and ahci-xgene drivers
   (Krzysztof)

 - Fix a long standing potential command starvation situation with
   non-NCQ commands issued when NCQ commands are on-going (me)

 - Limit max_sectors to 8191 on the INTEL SSDSC2KG480G8 SSD (Niklas)

 - Remove Vesa Local Bus (VLB) support in the pata_legacy driver (Ethan)

 - Simple fixes in the pata_cypress (typo) and pata_ftide010 (timing)
   drivers (Ethan, Linus W)

* tag 'ata-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
  ata: pata_ftide010: Fix some DMA timings
  ata: pata_cypress: fix typo in error message
  ata: pata_legacy: remove VLB support
  ata: libata-core: Quirk INTEL SSDSC2KG480G8 max_sectors
  dt-bindings: ata: sata: Document the graph port
  ata: libata-scsi: avoid Non-NCQ command starvation
  ata: libata-scsi: refactor ata_scsi_translate()
  ata: ahci-xgene: Fix Wvoid-pointer-to-enum-cast warning
  ata: ahci-imx: Fix Wvoid-pointer-to-enum-cast warning
  ata: ahci-dwc: Simplify with scoped for each OF child loop
  dt-bindings: ata: ahci-platform: Drop unnecessary select schema
  ata: libata: Allow more quirks
  ata: libata: Add libata.force parameter max_sec
  ata: libata: Add support to parse equal sign in libata.force
  ata: libata: Change libata.force to use the generic ATA_QUIRK_MAX_SEC quirk
  ata: libata: Add ata_force_get_fe_for_dev() helper
  ata: libata: Add ATA_QUIRK_MAX_SEC and convert all device quirks
  ata: libata: avoid long timeouts on hot-unplugged SATA DAS
  ata: libata-scsi: Remove superfluous local_irq_save()
2026-02-12 17:12:43 -08:00
Linus Torvalds
311aa68319 Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
 "Usual smallish cycle. The NFS biovec work to push it down into RDMA
  instead of indirecting through a scatterlist is pretty nice to see,
  been talked about for a long time now.

   - Various code improvements in irdma, rtrs, qedr, ocrdma, irdma, rxe

   - Small driver improvements and minor bug fixes to hns, mlx5, rxe,
     mana, mlx5, irdma

   - Robusness improvements in completion processing for EFA

   - New query_port_speed() verb to move past limited IBA defined speed
     steps

   - Support for SG_GAPS in rts and many other small improvements

   - Rare list corruption fix in iwcm

   - Better support different page sizes in rxe

   - Device memory support for mana

   - Direct bio vec to kernel MR for use by NFS-RDMA

   - QP rate limiting for bnxt_re

   - Remote triggerable NULL pointer crash in siw

   - DMA-buf exporter support for RDMA mmaps like doorbells"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (66 commits)
  RDMA/mlx5: Implement DMABUF export ops
  RDMA/uverbs: Add DMABUF object type and operations
  RDMA/uverbs: Support external FD uobjects
  RDMA/siw: Fix potential NULL pointer dereference in header processing
  RDMA/umad: Reject negative data_len in ib_umad_write
  IB/core: Extend rate limit support for RC QPs
  RDMA/mlx5: Support rate limit only for Raw Packet QP
  RDMA/bnxt_re: Report QP rate limit in debugfs
  RDMA/bnxt_re: Report packet pacing capabilities when querying device
  RDMA/bnxt_re: Add support for QP rate limiting
  MAINTAINERS: Drop RDMA files from Hyper-V section
  RDMA/uverbs: Add __GFP_NOWARN to ib_uverbs_unmarshall_recv() kmalloc
  svcrdma: use bvec-based RDMA read/write API
  RDMA/core: add rdma_rw_max_sge() helper for SQ sizing
  RDMA/core: add MR support for bvec-based RDMA operations
  RDMA/core: use IOVA-based DMA mapping for bvec RDMA operations
  RDMA/core: add bio_vec based RDMA read/write API
  RDMA/irdma: Use kvzalloc for paged memory DMA address array
  RDMA/rxe: Fix race condition in QP timer handlers
  RDMA/mana_ib: Add device‑memory support
  ...
2026-02-12 17:05:20 -08:00
Linus Torvalds
e812928be2 Merge tag 'cxl-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull CXL updates from Dave Jiang:

 - Introduce cxl_memdev_attach and pave way for soft reserved handling,
   type2 accelerator enabling, and LSA 2.0 enabling. All these series
   require the endpoint driver to settle before continuing the memdev
   driver probe.

 - Address CXL port error protocol handling and reporting.

   The large patch series was split into three parts. The first two
   parts are included here with the final part coming later.

   The first part consists of a series of code refactoring to PCI AER
   sub-system that addresses CXL and also CXL RAS code to prepare for
   port error handling.

   The second part refactors the CXL code to move management of
   component registers to cxl_port objects to allow all CXL AER errors
   to be handled through the cxl_port hierarchy.

 - Provide AMD Zen5 platform address translation for CXL using ACPI
   PRMT. This includes a conventions document to explain why this is
   needed and how it's implemented.

 - Misc CXL patches of fixes, cleanups, and updates. Including CXL
   address translation for unaligned MOD3 regions.

[ TLA service: CXL is "Compute Express Link" ]

* tag 'cxl-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (59 commits)
  cxl: Disable HPA/SPA translation handlers for Normalized Addressing
  cxl/region: Factor out code into cxl_region_setup_poison()
  cxl/atl: Lock decoders that need address translation
  cxl: Enable AMD Zen5 address translation using ACPI PRMT
  cxl/acpi: Prepare use of EFI runtime services
  cxl: Introduce callback for HPA address ranges translation
  cxl/region: Use region data to get the root decoder
  cxl/region: Add @hpa_range argument to function cxl_calc_interleave_pos()
  cxl/region: Separate region parameter setup and region construction
  cxl: Simplify cxl_root_ops allocation and handling
  cxl/region: Store HPA range in struct cxl_region
  cxl/region: Store root decoder in struct cxl_region
  cxl/region: Rename misleading variable name @hpa to @hpa_range
  Documentation/driver-api/cxl: ACPI PRM Address Translation Support and AMD Zen5 enablement
  cxl, doc: Moving conventions in separate files
  cxl, doc: Remove isonum.txt inclusion
  cxl/port: Unify endpoint and switch port lookup
  cxl/port: Move endpoint component register management to cxl_port
  cxl/port: Map Port RAS registers
  cxl/port: Move dport RAS setup to dport add time
  ...
2026-02-12 16:33:05 -08:00
Linus Torvalds
cebcffe666 Merge tag 'vfio-v7.0-rc1' of https://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:
 "A small cycle with the bulk in selftests and reintroducing poison
  handling in the nvgrace-gpu driver. The rest are fixes, cleanups, and
  some dmabuf structure consolidation.

   - Update outdated mdev comment referencing the renamed
     mdev_type_add() function (Julia Lawall)

   - Introduce selftest support for IOMMU mapping of PCI MMIO BARs (Alex
     Mastro)

   - Relax selftest assertion relative to differences in huge page
     handling between legacy (v1) TYPE1 IOMMU mapping behavior and the
     compatibility mode supported by IOMMUFD (David Matlack)

   - Reintroduce memory poison handling support for non-struct-page-
     backed memory in the nvgrace-gpu variant driver (Ankit Agrawal)

   - Replace dma_buf_phys_vec with phys_vec to avoid duplicate structure
     and semantics (Leon Romanovsky)

   - Add missing upstream bridge locking across PCI function reset,
     resolving an assertion failure when secondary bus reset is used to
     provide that reset (Anthony Pighin)

   - Fixes to hisi_acc vfio-pci variant driver to resolve corner case
     issues related to resets, repeated migration, and error injection
     scenarios (Longfang Liu, Weili Qian)

   - Restrict vfio selftest builds to arm64 and x86_64, resolving
     compiler warnings on 32-bit archs (Ted Logan)

   - Un-deprecate the fsl-mc vfio bus driver as a new maintainer has
     stepped up (Ioana Ciornei)"

* tag 'vfio-v7.0-rc1' of https://github.com/awilliam/linux-vfio:
  vfio/fsl-mc: add myself as maintainer
  vfio: selftests: only build tests on arm64 and x86_64
  hisi_acc_vfio_pci: fix the queue parameter anomaly issue
  hisi_acc_vfio_pci: resolve duplicate migration states
  hisi_acc_vfio_pci: update status after RAS error
  hisi_acc_vfio_pci: fix VF reset timeout issue
  vfio/pci: Lock upstream bridge for vfio_pci_core_disable()
  types: reuse common phys_vec type instead of DMABUF open‑coded variant
  vfio/nvgrace-gpu: register device memory for poison handling
  mm: add stubs for PFNMAP memory failure registration functions
  vfio: selftests: Drop IOMMU mapping size assertions for VFIO_TYPE1_IOMMU
  vfio: selftests: Add vfio_dma_mapping_mmio_test
  vfio: selftests: Align BAR mmaps for efficient IOMMU mapping
  vfio: selftests: Centralize IOMMU mode name definitions
  vfio/mdev: update outdated comment
2026-02-12 15:52:39 -08:00
Linus Torvalds
d4a379a52c Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
 "Usual driver updates (qla2xxx, mpi3mr, mpt3sas, ufs) plus assorted
  cleanups and fixes.

  The biggest core change is the massive code motion in the sd driver to
  remove forward declarations and the most significant change is to
  enumify the queuecommand return"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (78 commits)
  scsi: csiostor: Fix dereference of null pointer rn
  scsi: buslogic: Reduce stack usage
  scsi: ufs: host: mediatek: Require CONFIG_PM
  scsi: ufs: mediatek: Fix page faults in ufs_mtk_clk_scale() trace event
  scsi: smartpqi: Fix memory leak in pqi_report_phys_luns()
  scsi: mpi3mr: Make driver probing asynchronous
  scsi: ufs: core: Flush exception handling work when RPM level is zero
  scsi: efct: Use IRQF_ONESHOT and default primary handler
  scsi: ufs: core: Use a host-wide tagset in SDB mode
  scsi: qla2xxx: target: Add WQ_PERCPU to alloc_workqueue() users
  scsi: qla2xxx: Add WQ_PERCPU to alloc_workqueue() users
  scsi: qla4xxx: Add WQ_PERCPU to alloc_workqueue() users
  scsi: mpi3mr: Driver version update to 8.17.0.3.50
  scsi: mpi3mr: Fixed the W=1 compilation warning
  scsi: mpi3mr: Record and report controller firmware faults
  scsi: mpi3mr: Update MPI Headers to revision 39
  scsi: mpi3mr: Use negotiated link rate from DevicePage0
  scsi: mpi3mr: Avoid redundant diag-fault resets
  scsi: mpi3mr: Rename log data save helper to reflect threaded/BH context
  scsi: mpi3mr: Add module parameter to control threaded IRQ polling
  ...
2026-02-12 15:43:02 -08:00
Andrii Nakryiko
61dc9f7767 procfs: fix possible double mmput() in do_procmap_query()
When user provides incorrectly sized buffer for build ID for PROCMAP_QUERY
we return with -ENAMETOOLONG error.  After recent changes this condition
happens later, after we unlocked mmap_lock/per-VMA lock and did mmput(),
so original goto out is now wrong and will double-mmput() mm_struct.  Fix
by jumping further to clean up only vm_file and name_buf.

Link: https://lkml.kernel.org/r/20260210192738.3041609-1-andrii@kernel.org
Fixes: b5cbacd7f8 ("procfs: avoid fetching build ID while holding VMA lock")
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Reported-by: Ruikai Peng <ruikai@pwno.io>
Reported-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev>
Reported-by: syzbot+237b5b985b78c1da9600@syzkaller.appspotmail.com
Cc: Ruikai Peng <ruikai@pwno.io>
Closes: https://lkml.kernel.org/r/CAFD3drOJANTZPuyiqMdqpiRwOKnHwv5QgMNZghCDr-WxdiHvMg@mail.gmail.com
Closes: https://lore.kernel.org/all/698aaf3c.050a0220.3b3015.0088.GAE@google.com/T/#u
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-02-12 15:40:16 -08:00
Harry Yoo
338ad1e84d mm/page_alloc: skip debug_check_no_{obj,locks}_freed with FPI_TRYLOCK
When CONFIG_DEBUG_OBJECTS_FREE is enabled,
debug_check_no_{obj,locks}_freed() functions are called.

Since both of them spin on a lock, they are not safe to be called if the
FPI_TRYLOCK flag is specified.  This leads to a lockdep splat:

  ================================
  WARNING: inconsistent lock state
  6.19.0-rc5-slab-for-next+ #326 Tainted: G                 N
  --------------------------------
  inconsistent {INITIAL USE} -> {IN-NMI} usage.
  kunit_try_catch/9046 [HC2[2]:SC0[0]:HE0:SE1] takes:
  ffffffff84ed6bf8 (&obj_hash[i].lock){-.-.}-{2:2}, at: __debug_check_no_obj_freed+0xe0/0x300
  {INITIAL USE} state was registered at:
    lock_acquire+0xd9/0x2f0
    _raw_spin_lock_irqsave+0x4c/0x80
    __debug_object_init+0x9d/0x1f0
    debug_object_init+0x34/0x50
    __init_work+0x28/0x40
    init_cgroup_housekeeping+0x151/0x210
    init_cgroup_root+0x3d/0x140
    cgroup_init_early+0x30/0x240
    start_kernel+0x3e/0xcd0
    x86_64_start_reservations+0x18/0x30
    x86_64_start_kernel+0xf3/0x140
    common_startup_64+0x13e/0x148
  irq event stamp: 2998
  hardirqs last  enabled at (2997): [<ffffffff8298b77a>] exc_nmi+0x11a/0x240
  hardirqs last disabled at (2998): [<ffffffff8298b991>] sysvec_irq_work+0x11/0x110
  softirqs last  enabled at (1416): [<ffffffff813c1f72>] __irq_exit_rcu+0x132/0x1c0
  softirqs last disabled at (1303): [<ffffffff813c1f72>] __irq_exit_rcu+0x132/0x1c0

  other info that might help us debug this:
   Possible unsafe locking scenario:

         CPU0
         ----
    lock(&obj_hash[i].lock);
    <Interrupt>
      lock(&obj_hash[i].lock);

   *** DEADLOCK ***

Rename free_pages_prepare() to __free_pages_prepare(), add an fpi_t
parameter, and skip those checks if FPI_TRYLOCK is set.  To keep the fpi_t
definition in mm/page_alloc.c, add a wrapper function free_pages_prepare()
that always passes FPI_NONE and use it in mm/compaction.c.

Link: https://lkml.kernel.org/r/20260209062639.16577-1-harry.yoo@oracle.com
Fixes: 8c57b687e8 ("mm, bpf: Introduce free_pages_nolock()")
Signed-off-by: Harry Yoo <harry.yoo@oracle.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Zi Yan <ziy@nvidia.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-02-12 15:40:15 -08:00
Joshua Hahn
1d3f9bb4c8 mm/hugetlb: restore failed global reservations to subpool
Commit a833a693a4 ("mm: hugetlb: fix incorrect fallback for subpool")
fixed an underflow error for hstate->resv_huge_pages caused by incorrectly
attributing globally requested pages to the subpool's reservation.

Unfortunately, this fix also introduced the opposite problem, which would
leave spool->used_hpages elevated if the globally requested pages could
not be acquired.  This is because while a subpool's reserve pages only
accounts for what is requested and allocated from the subpool, its "used"
counter keeps track of what is consumed in total, both from the subpool
and globally.  Thus, we need to adjust spool->used_hpages in the other
direction, and make sure that globally requested pages are uncharged from
the subpool's used counter.

Each failed allocation attempt increments the used_hpages counter by how
many pages were requested from the global pool.  Ultimately, this renders
the subpool unusable, as used_hpages approaches the max limit.

The issue can be reproduced as follows:
1. Allocate 4 hugetlb pages
2. Create a hugetlb mount with max=4, min=2
3. Consume 2 pages globally
4. Request 3 pages from the subpool (2 from subpool + 1 from global)
	4.1 hugepage_subpool_get_pages(spool, 3) succeeds.
		used_hpages += 3
	4.2 hugetlb_acct_memory(h, 1) fails: no global pages left
		used_hpages -= 2
5. Subpool now has used_hpages = 1, despite not being able to
   successfully allocate any hugepages. It believes it can now only
   allocate 3 more hugepages, not 4.

With each failed allocation attempt incrementing the used counter, the
subpool eventually reaches a point where its used counter equals its
max counter.  At that point, any future allocations that try to
allocate hugeTLB pages from the subpool will fail, despite the subpool
not having any of its hugeTLB pages consumed by any user.

Once this happens, there is no way to make the subpool usable again,
since there is no way to decrement the used counter as no process is
really consuming the hugeTLB pages.

The underflow issue that the original commit fixes still remains fixed
as well.

Without this fix, used_hpages would keep on leaking if
hugetlb_acct_memory() fails.

Link: https://lkml.kernel.org/r/20260116204037.2270096-1-joshua.hahnjy@gmail.com
Fixes: a833a693a4 ("mm: hugetlb: fix incorrect fallback for subpool")
Signed-off-by: Joshua Hahn <joshua.hahnjy@gmail.com>
Acked-by: Usama Arif <usama.arif@linux.dev>
Cc: David Hildenbrand <david@kernel.org>
Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Ma Wupeng <mawupeng1@huawei.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Waiman Long <longman@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-02-12 15:40:15 -08:00
Linus Torvalds
041c16acba Merge tag 'for-7.0/io_uring-zcrx-large-buffers-20260206' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring large rx buffer support from Jens Axboe:
 "Now that the networking updates are upstream, here's the support for
  large buffers for zcrx.

  Using larger (bigger than 4K) rx buffers can increase the effiency of
  zcrx. For example, it's been shown that using 32K buffers can decrease
  CPU usage by ~30% compared to 4K buffers"

* tag 'for-7.0/io_uring-zcrx-large-buffers-20260206' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  io_uring/zcrx: implement large rx buffer support
2026-02-12 15:07:50 -08:00
Linus Torvalds
e99785a923 Merge tag 'libnvdimm-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Ira Weiny:
 "A kmap conversion and a bug fix this go around:

   - drivers/nvdimm: Use local kmaps

   - nvdimm: virtio_pmem: serialize flush requests"

* tag 'libnvdimm-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  nvdimm: virtio_pmem: serialize flush requests
  drivers/nvdimm: Use local kmaps
2026-02-12 14:47:35 -08:00
Linus Torvalds
582a1ef360 Merge tag 'trace-rtla-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull RTLA updates from Steven Rostedt:

 - Remove unused function declarations

   Some functions were removed in recent code consolidation 6.18, but
   their prototypes were not removed from headers. Remove them.

 - Set stop threshold after enabling instances

   Prefer recording samples without stopping on them on the start of
   tracing to stopping on samples that are never recorded. This fixes
   flakiness of some RTLA tests and unifies behavior of sample
   collection between tracefs mode and BPF mode.

 - Consolidate usage help message implementation

   RTLA tools (osnoise-top, osnoise-hist, timerlat-top, timerlat-hist)
   each implement usage help individually. Move common logic between
   them into a new function to reduce code duplication.

 - Add BPF actions feature

   Add option --bpf-action to attach a BPF program (passed as filename
   of its ELF representation) to be executed via BPF tail call at
   latency threshold.

 - Consolidate command line option parsing

   Each RTLA tool implements the parsing of command line options
   individually. Now that we have a common structure for parameters,
   unify the parsing of those options common among all four tools into
   one function.

 - De-duplicate cgroup common code

   Two functions in utils.c, setting cgroup for comm and setting cgroup
   for pid, duplicate code for constructing the cgroup path. Extract it
   to a new helper function.

 - String and error handling fixes and cleanups

   There were several instances of unsafe string and error handling that
   could cause invalid memory access; fix them. Also, remove a few
   unused headers, update .gitignore, and deduplicate code.

* tag 'trace-rtla-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (30 commits)
  rtla: Fix parse_cpu_set() bug introduced by strtoi()
  rtla: Fix parse_cpu_set() return value documentation
  rtla: Ensure null termination after read operations in utils.c
  rtla: Make stop_tracing variable volatile
  rtla: Add generated output files to gitignore
  rtla: Fix NULL pointer dereference in actions_parse
  rtla: Remove unused headers
  rtla: Remove redundant memset after calloc
  rtla: Use standard exit codes for result enum
  rtla: Replace atoi() with a robust strtoi()
  rtla: Introduce for_each_action() helper
  tools/rtla: Deduplicate cgroup path opening code
  tools/rtla: Consolidate -H/--house-keeping option parsing
  tools/rtla: Consolidate -P/--priority option parsing
  tools/rtla: Consolidate -e/--event option parsing
  tools/rtla: Consolidate -d/--duration option parsing
  tools/rtla: Consolidate -D/--debug option parsing
  tools/rtla: Consolidate -C/--cgroup option parsing
  tools/rtla: Consolidate -c/--cpus option parsing
  tools/rtla: Add common_parse_options()
  ...
2026-02-12 14:31:02 -08:00
Linus Torvalds
f75c03a761 Merge tag 'trace-rv-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull runtime verifier updates from Steven Rostedt:

 - Refactor da_monitor to minimize macros

   Complete refactor of da_monitor.h to reduce reliance on macros
   generating functions. Use generic static functions and uses the
   preprocessor only when strictly necessary (e.g. for tracepoint
   handlers).

   The change essentially relies on functions with generic names (e.g.
   da_handle) instead of monitor-specific as well adding the need to
   define constant (e.g. MONITOR_NAME, MONITOR_TYPE) before including
   the header rather than calling macros that would define functions.
   Also adapt monitors and documentation accordingly.

 - Cleanup DA code generation scripts

   Clean up functions in dot2c removing reimplementations of trivial
   library functions (__buff_to_string) and removing some other unused
   intermediate steps.

 - Annotate functions with types in the rvgen python scripts

 - Remove superfluous assignments and cleanup generated code

   The rvgen scripts generate a superfluous assignment to 0 for enum
   variables and don't add commas to the last elements, which is against
   the kernel coding standards. Change the generation process for a
   better compliance and slightly simpler logic.

 - Remove superfluous declarations from generated code

   The monitor container source files contained a declaration and a
   definition for the rv_monitor variable. The former is superfluous and
   was removed.

 - Fix reference to outdated documentation

   s/da_monitor_synthesis.rst/monitor_synthesis.rst in comment in
   da_monitor.h

* tag 'trace-rv-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  rv: Fix documentation reference in da_monitor.h
  verification/rvgen: Remove unused variable declaration from containers
  verification/dot2c: Remove superfluous enum assignment and add last comma
  verification/dot2c: Remove __buff_to_string() and cleanup
  verification/rvgen: Annotate DA functions with types
  verification/rvgen: Adapt dot2k and templates after refactoring da_monitor.h
  Documentation/rv: Adapt documentation after da_monitor refactoring
  rv: Cleanup da_monitor after refactor
  rv: Refactor da_monitor to minimise macros
2026-02-12 14:08:49 -08:00
Linus Torvalds
a67594c977 Merge tag 'for-linus' of https://github.com/openrisc/linux
Pull OpenRISC updates from Stafford Horne:
 "The main focus for this series has been to improve OpenRISC kernel
  out-of-the-box support for FPGA dev boards.

   - Add device tree configurations for De0 Nano single and multicore
     configurations

   - Fix bug in OpenRISC SMP preventing the kernel from running on FPGA
     boards, due to IPIs not being unmasked on secondary CPUs in some
     configurations

   - Pick up a fix from Brian Masney defining the nop() macro to fix
     build failures on OpenRISC for drivers using it"

* tag 'for-linus' of https://github.com/openrisc/linux:
  openrisc: define arch-specific version of nop()
  openrisc: dts: Add de0 nano multicore config and devicetree
  openrisc: dts: Split simple smp dts to dts and dtsi
  openrisc: Fix IPIs on simple multicore systems
  openrisc: dts: Add de0 nano config and devicetree
2026-02-12 14:04:43 -08:00
Linus Torvalds
8c0901b6f9 Merge tag 'configfs-for-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/a.hindborg/linux
Pull configfs updates from Andreas Hindborg:

 - Switch the configfs rust bindings to use c string literals provided
   by the compiler, rather than a macro

 - A follow up on constifying `configfs_item_operations`, applying the
   change to the configfs sample

* tag 'configfs-for-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/a.hindborg/linux:
  samples: configfs: Constify struct configfs_item_operations and configfs_group_operations
  rust: configfs: replace `kernel::c_str!` with C-Strings
2026-02-12 14:01:38 -08:00
Linus Torvalds
136114e0ab Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:

 - "ocfs2: give ocfs2 the ability to reclaim suballocator free bg" saves
   disk space by teaching ocfs2 to reclaim suballocator block group
   space (Heming Zhao)

 - "Add ARRAY_END(), and use it to fix off-by-one bugs" adds the
   ARRAY_END() macro and uses it in various places (Alejandro Colomar)

 - "vmcoreinfo: support VMCOREINFO_BYTES larger than PAGE_SIZE" makes
   the vmcore code future-safe, if VMCOREINFO_BYTES ever exceeds the
   page size (Pnina Feder)

 - "kallsyms: Prevent invalid access when showing module buildid" cleans
   up kallsyms code related to module buildid and fixes an invalid
   access crash when printing backtraces (Petr Mladek)

 - "Address page fault in ima_restore_measurement_list()" fixes a
   kexec-related crash that can occur when booting the second-stage
   kernel on x86 (Harshit Mogalapalli)

 - "kho: ABI headers and Documentation updates" updates the kexec
   handover ABI documentation (Mike Rapoport)

 - "Align atomic storage" adds the __aligned attribute to atomic_t and
   atomic64_t definitions to get natural alignment of both types on
   csky, m68k, microblaze, nios2, openrisc and sh (Finn Thain)

 - "kho: clean up page initialization logic" simplifies the page
   initialization logic in kho_restore_page() (Pratyush Yadav)

 - "Unload linux/kernel.h" moves several things out of kernel.h and into
   more appropriate places (Yury Norov)

 - "don't abuse task_struct.group_leader" removes the usage of
   ->group_leader when it is "obviously unnecessary" (Oleg Nesterov)

 - "list private v2 & luo flb" adds some infrastructure improvements to
   the live update orchestrator (Pasha Tatashin)

* tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (107 commits)
  watchdog/hardlockup: simplify perf event probe and remove per-cpu dependency
  procfs: fix missing RCU protection when reading real_parent in do_task_stat()
  watchdog/softlockup: fix sample ring index wrap in need_counting_irqs()
  kcsan, compiler_types: avoid duplicate type issues in BPF Type Format
  kho: fix doc for kho_restore_pages()
  tests/liveupdate: add in-kernel liveupdate test
  liveupdate: luo_flb: introduce File-Lifecycle-Bound global state
  liveupdate: luo_file: Use private list
  list: add kunit test for private list primitives
  list: add primitives for private list manipulations
  delayacct: fix uapi timespec64 definition
  panic: add panic_force_cpu= parameter to redirect panic to a specific CPU
  netclassid: use thread_group_leader(p) in update_classid_task()
  RDMA/umem: don't abuse current->group_leader
  drm/pan*: don't abuse current->group_leader
  drm/amd: kill the outdated "Only the pthreads threading model is supported" checks
  drm/amdgpu: don't abuse current->group_leader
  android/binder: use same_thread_group(proc->tsk, current) in binder_mmap()
  android/binder: don't abuse current->group_leader
  kho: skip memoryless NUMA nodes when reserving scratch areas
  ...
2026-02-12 12:13:01 -08:00
Linus Torvalds
4cff5c05e0 Merge tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:

 - "powerpc/64s: do not re-activate batched TLB flush" makes
   arch_{enter|leave}_lazy_mmu_mode() nest properly (Alexander Gordeev)

   It adds a generic enter/leave layer and switches architectures to use
   it. Various hacks were removed in the process.

 - "zram: introduce compressed data writeback" implements data
   compression for zram writeback (Richard Chang and Sergey Senozhatsky)

 - "mm: folio_zero_user: clear page ranges" adds clearing of contiguous
   page ranges for hugepages. Large improvements during demand faulting
   are demonstrated (David Hildenbrand)

 - "memcg cleanups" tidies up some memcg code (Chen Ridong)

 - "mm/damon: introduce {,max_}nr_snapshots and tracepoint for damos
   stats" improves DAMOS stat's provided information, deterministic
   control, and readability (SeongJae Park)

 - "selftests/mm: hugetlb cgroup charging: robustness fixes" fixes a few
   issues in the hugetlb cgroup charging selftests (Li Wang)

 - "Fix va_high_addr_switch.sh test failure - again" addresses several
   issues in the va_high_addr_switch test (Chunyu Hu)

 - "mm/damon/tests/core-kunit: extend existing test scenarios" improves
   the KUnit test coverage for DAMON (Shu Anzai)

 - "mm/khugepaged: fix dirty page handling for MADV_COLLAPSE" fixes a
   glitch in khugepaged which was causing madvise(MADV_COLLAPSE) to
   transiently return -EAGAIN (Shivank Garg)

 - "arch, mm: consolidate hugetlb early reservation" reworks and
   consolidates a pile of straggly code related to reservation of
   hugetlb memory from bootmem and creation of CMA areas for hugetlb
   (Mike Rapoport)

 - "mm: clean up anon_vma implementation" cleans up the anon_vma
   implementation in various ways (Lorenzo Stoakes)

 - "tweaks for __alloc_pages_slowpath()" does a little streamlining of
   the page allocator's slowpath code (Vlastimil Babka)

 - "memcg: separate private and public ID namespaces" cleans up the
   memcg ID code and prevents the internal-only private IDs from being
   exposed to userspace (Shakeel Butt)

 - "mm: hugetlb: allocate frozen gigantic folio" cleans up the
   allocation of frozen folios and avoids some atomic refcount
   operations (Kefeng Wang)

 - "mm/damon: advance DAMOS-based LRU sorting" improves DAMOS's movement
   of memory betewwn the active and inactive LRUs and adds auto-tuning
   of the ratio-based quotas and of monitoring intervals (SeongJae Park)

 - "Support page table check on PowerPC" makes
   CONFIG_PAGE_TABLE_CHECK_ENFORCED work on powerpc (Andrew Donnellan)

 - "nodemask: align nodes_and{,not} with underlying bitmap ops" makes
   nodes_and() and nodes_andnot() propagate the return values from the
   underlying bit operations, enabling some cleanup in calling code
   (Yury Norov)

 - "mm/damon: hide kdamond and kdamond_lock from API callers" cleans up
   some DAMON internal interfaces (SeongJae Park)

 - "mm/khugepaged: cleanups and scan limit fix" does some cleanup work
   in khupaged and fixes a scan limit accounting issue (Shivank Garg)

 - "mm: balloon infrastructure cleanups" goes to town on the balloon
   infrastructure and its page migration function. Mainly cleanups, also
   some locking simplification (David Hildenbrand)

 - "mm/vmscan: add tracepoint and reason for kswapd_failures reset" adds
   additional tracepoints to the page reclaim code (Jiayuan Chen)

 - "Replace wq users and add WQ_PERCPU to alloc_workqueue() users" is
   part of Marco's kernel-wide migration from the legacy workqueue APIs
   over to the preferred unbound workqueues (Marco Crivellari)

 - "Various mm kselftests improvements/fixes" provides various unrelated
   improvements/fixes for the mm kselftests (Kevin Brodsky)

 - "mm: accelerate gigantic folio allocation" greatly speeds up gigantic
   folio allocation, mainly by avoiding unnecessary work in
   pfn_range_valid_contig() (Kefeng Wang)

 - "selftests/damon: improve leak detection and wss estimation
   reliability" improves the reliability of two of the DAMON selftests
   (SeongJae Park)

 - "mm/damon: cleanup kdamond, damon_call(), damos filter and
   DAMON_MIN_REGION" does some cleanup work in the core DAMON code
   (SeongJae Park)

 - "Docs/mm/damon: update intro, modules, maintainer profile, and misc"
   performs maintenance work on the DAMON documentation (SeongJae Park)

 - "mm: add and use vma_assert_stabilised() helper" refactors and cleans
   up the core VMA code. The main aim here is to be able to use the mmap
   write lock's lockdep state to perform various assertions regarding
   the locking which the VMA code requires (Lorenzo Stoakes)

 - "mm, swap: swap table phase II: unify swapin use" removes some old
   swap code (swap cache bypassing and swap synchronization) which
   wasn't working very well. Various other cleanups and simplifications
   were made. The end result is a 20% speedup in one benchmark (Kairui
   Song)

 - "enable PT_RECLAIM on more 64-bit architectures" makes PT_RECLAIM
   available on 64-bit alpha, loongarch, mips, parisc, and um. Various
   cleanups were performed along the way (Qi Zheng)

* tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (325 commits)
  mm/memory: handle non-split locks correctly in zap_empty_pte_table()
  mm: move pte table reclaim code to memory.c
  mm: make PT_RECLAIM depends on MMU_GATHER_RCU_TABLE_FREE
  mm: convert __HAVE_ARCH_TLB_REMOVE_TABLE to CONFIG_HAVE_ARCH_TLB_REMOVE_TABLE config
  um: mm: enable MMU_GATHER_RCU_TABLE_FREE
  parisc: mm: enable MMU_GATHER_RCU_TABLE_FREE
  mips: mm: enable MMU_GATHER_RCU_TABLE_FREE
  LoongArch: mm: enable MMU_GATHER_RCU_TABLE_FREE
  alpha: mm: enable MMU_GATHER_RCU_TABLE_FREE
  mm: change mm/pt_reclaim.c to use asm/tlb.h instead of asm-generic/tlb.h
  mm/damon/stat: remove __read_mostly from memory_idle_ms_percentiles
  zsmalloc: make common caches global
  mm: add SPDX id lines to some mm source files
  mm/zswap: use %pe to print error pointers
  mm/vmscan: use %pe to print error pointers
  mm/readahead: fix typo in comment
  mm: khugepaged: fix NR_FILE_PAGES and NR_SHMEM in collapse_file()
  mm: refactor vma_map_pages to use vm_insert_pages
  mm/damon: unify address range representation with damon_addr_range
  mm/cma: replace snprintf with strscpy in cma_new_area
  ...
2026-02-12 11:32:37 -08:00
Linus Torvalds
541c43310e Merge tag 'fs_for_v6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull quota and isofs updates from Jan Kara:

 - a fix for quotactl livelock during filesystem freezing

 - a small improvement for isofs

 - a documentation fix for ext2

* tag 'fs_for_v6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  isofs: support full length file names (255 instead of 253)
  quota: fix livelock between quotactl and freeze_super
  doc : fix a broken link in ext2.rst
2026-02-12 10:57:57 -08:00
Linus Torvalds
a8ed22870f Merge tag 'fsnotify_for_v6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fsnotify updates from Jan Kara:
 "A set of fixes to shutdown fsnotify subsystem before invalidating
  dcache thus addressing some nasty possible races"

* tag 'fsnotify_for_v6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  fsnotify: Shutdown fsnotify before destroying sb's dcache
  fsnotify: Use connector list for destroying inode marks
  fsnotify: Track inode connectors for a superblock
2026-02-12 10:52:46 -08:00
Linus Torvalds
997f9640c9 Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux
Pull fsverity updates from Eric Biggers:
 "fsverity cleanups, speedup, and memory usage optimization from
  Christoph Hellwig:

   - Move some logic into common code

   - Fix btrfs to reject truncates of fsverity files

   - Improve the readahead implementation

   - Store each inode's fsverity_info in a hash table instead of using a
     pointer in the filesystem-specific part of the inode.

     This optimizes for memory usage in the usual case where most files
     don't have fsverity enabled.

   - Look up the fsverity_info fewer times during verification, to
     amortize the hash table overhead"

* tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux:
  fsverity: remove inode from fsverity_verification_ctx
  fsverity: use a hashtable to find the fsverity_info
  btrfs: consolidate fsverity_info lookup
  f2fs: consolidate fsverity_info lookup
  ext4: consolidate fsverity_info lookup
  fs: consolidate fsverity_info lookup in buffer.c
  fsverity: push out fsverity_info lookup
  fsverity: deconstify the inode pointer in struct fsverity_info
  fsverity: kick off hash readahead at data I/O submission time
  ext4: move ->read_folio and ->readahead to readpage.c
  readahead: push invalidate_lock out of page_cache_ra_unbounded
  fsverity: don't issue readahead for non-ENOENT errors from __filemap_get_folio
  fsverity: start consolidating pagecache code
  fsverity: pass struct file to ->write_merkle_tree_block
  f2fs: don't build the fsverity work handler for !CONFIG_FS_VERITY
  ext4: don't build the fsverity work handler for !CONFIG_FS_VERITY
  fs,fsverity: clear out fsverity_info from common code
  fs,fsverity: reject size changes on fsverity files in setattr_prepare
2026-02-12 10:41:34 -08:00
Linus Torvalds
5903c871e2 Merge tag 'ext4_for_linus-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
 "New features and improvements for the ext4 file system

   - Avoid unnecessary cache invalidation in the extent status cache
     (es_cache) when adding extents to be cached in the es_cache and we
     are not changing the extent tree

   - Add a sysfs parameter, err_report_sec, to control how frequently to
     log a warning message that file system inconsistency has been
     detected (Previously we logged the warning message every 24 hours)

   - Avoid unnecessary forced ordered writes when appending to a file
     when delayed allocation is enabled

   - Defer splitting unwritten extents to I/O completion to improve
     write performance of concurrent direct I/O writes to multiple files

   - Refactor and add kunit tests to the extent splitting and conversion
     code paths

  Various Bug Fixes:

   - Fix a panic when the debugging DOUBLE_CHECK macro is defined

   - Avoid using fast commit for rare and complex file system operations
     to make fast commit easier to reason about. This can also avoid
     some corner cases that could result in file system inconsistency if
     there is a crash between the fast commit before a subsequent full
     commit

   - Fix memory leaks in error paths

   - Fix a false positive reports caused when running stress tests using
     mixed huge-page workloads caused by a race between page migration
     and bitmap updates

   - Fix a potential recursion into file system reclaim when evicting an
     inode when fast commit is enabled

   - Fix a warning caused by a potential double decrement to the dirty
     clusters counter when executing FS_IOC_SHUTDOWN when running a
     stress test

   - Enable mballoc optimized scanning regardless whether the inode is
     using indirect blocks or extent trees to map blocks"

* tag 'ext4_for_linus-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (45 commits)
  et4: allow zeroout when doing written to unwritten split
  ext4: refactor split and convert extents
  ext4: refactor zeroout path and handle all cases
  ext4: propagate flags to ext4_convert_unwritten_extents_endio()
  ext4: propagate flags to convert_initialized_extent()
  ext4: add extent status cache support to kunit tests
  ext4: kunit tests for higher level extent manipulation functions
  ext4: kunit tests for extent splitting and conversion
  ext4: use optimized mballoc scanning regardless of inode format
  ext4: always allocate blocks only from groups inode can use
  ext4: fix dirtyclusters double decrement on fs shutdown
  ext4: fast commit: make s_fc_lock reclaim-safe
  ext4: fix e4b bitmap inconsistency reports
  ext4: remove redundant NULL check after __GFP_NOFAIL
  ext4: remove EXT4_GET_BLOCKS_IO_CREATE_EXT
  ext4: simplify the mapping query logic in ext4_iomap_begin()
  ext4: remove unused unwritten parameter in ext4_dio_write_iter()
  ext4: remove useless ext4_iomap_overwrite_ops
  ext4: avoid starting handle when dio writing an unwritten extent
  ext4: don't split extent before submitting I/O
  ...
2026-02-12 10:19:58 -08:00
Linus Torvalds
178574549e Merge tag 'jfs-7.0' of github.com:kleikamp/linux-shaggy
Pull jfs updates from Dave Kleikamp:
 "Just a handful of minor jfs fixes"

* tag 'jfs-7.0' of github.com:kleikamp/linux-shaggy:
  jfs: avoid -Wtautological-constant-out-of-range-compare warning
  jfs: Add missing set_freezable() for freezable kthread
  jfs: nlink overflow in jfs_rename
2026-02-12 09:30:56 -08:00
Linus Torvalds
cf559d9011 Merge tag 'for-linus-7.0-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux
Pull orangefs updates from Mike Marshall:

 - Fixes for string handling in orangefs-debugfs.c and xattr.c (Thorsten
   Blum)

* tag 'for-linus-7.0-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
  fs/orangefs: Replace deprecated strcpy with memcpy + strscpy
  orangefs: Replace deprecated strcpy with strscpy
2026-02-12 08:57:31 -08:00
Linus Torvalds
d53f4d93f3 Merge tag 'v7.0-rc-part1-ksmbd-and-smbdirect-fixes' of git://git.samba.org/ksmbd
Pull smb server and smbdirect updates from Steve French:

 - Fix tcp connection leak

 - Fix potential use after free when freeing multichannel

 - Fix locking problem in showing channel list

 - Locking improvement for tree connection

 - Fix infinite loop when signing errors

 - Add /proc interface for monitoring server state

 - Fixes to avoid mixing iWarp and InfiniBand/RoCEv1/RoCEv2
   port ranges used for smbdirect

 - Fixes for smbdirect credit handling problems, these make
   the connections more reliable

* tag 'v7.0-rc-part1-ksmbd-and-smbdirect-fixes' of git://git.samba.org/ksmbd: (32 commits)
  ksmbd: fix non-IPv6 build
  ksmbd: convert tree_conns_lock to rw_semaphore
  ksmbd: fix missing chann_lock while iterating session channel list
  ksmbd: add chann_lock to protect ksmbd_chann_list xarray
  smb: server: correct value for smb_direct_max_fragmented_recv_size
  smb: client: correct value for smbd_max_fragmented_recv_size
  smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection()
  ksmbd: add procfs interface for runtime monitoring and statistics
  ksmbd: fix infinite loop caused by next_smb2_rcv_hdr_off reset in error paths
  smb: server: make use of rdma_restrict_node_type()
  smb: client: make use of rdma_restrict_node_type()
  RDMA/core: introduce rdma_restrict_node_type()
  smb: client: let send_done handle a completion without IB_SEND_SIGNALED
  smb: client: let smbd_post_send_negotiate_req() use smbd_post_send()
  smb: client: fix last send credit problem causing disconnects
  smb: client: make use of smbdirect_socket.send_io.bcredits
  smb: client: use smbdirect_send_batch processing
  smb: client: introduce and use smbd_{alloc, free}_send_io()
  smb: client: split out smbd_ib_post_send()
  smb: client: port and use the wait_for_credits logic used by server
  ...
2026-02-12 08:31:12 -08:00
Linus Torvalds
2831fa8b8b Merge tag 'nfsd-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux
Pull nfsd updates from Chuck Lever:
 "Neil Brown and Jeff Layton contributed a dynamic thread pool sizing
  mechanism for NFSD. The sunrpc layer now tracks minimum and maximum
  thread counts per pool, and NFSD adjusts running thread counts based
  on workload: idle threads exit after a timeout when the pool exceeds
  its minimum, and new threads spawn automatically when all threads are
  busy. Administrators control this behavior via the nfsdctl netlink
  interface.

  Rick Macklem, FreeBSD NFS maintainer, generously contributed server-
  side support for the POSIX ACL extension to NFSv4, as specified in
  draft-ietf-nfsv4-posix-acls. This extension allows NFSv4 clients to
  get and set POSIX access and default ACLs using native NFSv4
  operations, eliminating the need for sideband protocols. The feature
  is gated by a Kconfig option since the IETF draft has not yet been
  ratified.

  Chuck Lever delivered numerous improvements to the xdrgen tool. Error
  reporting now covers parsing, AST transformation, and invalid
  declarations. Generated enum decoders validate incoming values against
  valid enumerator lists. New features include pass-through line support
  for embedding C directives in XDR specifications, 16-bit integer
  types, and program number definitions. Several code generation issues
  were also addressed.

  When an administrator revokes NFSv4 state for a filesystem via the
  unlock_fs interface, ongoing async COPY operations referencing that
  filesystem are now cancelled, with CB_OFFLOAD callbacks notifying
  affected clients.

  The remaining patches in this pull request are clean-ups and minor
  optimizations. Sincere thanks to all contributors, reviewers, testers,
  and bug reporters who participated in the v7.0 NFSD development cycle"

* tag 'nfsd-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (45 commits)
  NFSD: Add POSIX ACL file attributes to SUPPATTR bitmasks
  NFSD: Add POSIX draft ACL support to the NFSv4 SETATTR operation
  NFSD: Add support for POSIX draft ACLs for file creation
  NFSD: Add support for XDR decoding POSIX draft ACLs
  NFSD: Refactor nfsd_setattr()'s ACL error reporting
  NFSD: Do not allow NFSv4 (N)VERIFY to check POSIX ACL attributes
  NFSD: Add nfsd4_encode_fattr4_posix_access_acl
  NFSD: Add nfsd4_encode_fattr4_posix_default_acl
  NFSD: Add nfsd4_encode_fattr4_acl_trueform_scope
  NFSD: Add nfsd4_encode_fattr4_acl_trueform
  Add RPC language definition of NFSv4 POSIX ACL extension
  NFSD: Add a Kconfig setting to enable support for NFSv4 POSIX ACLs
  xdrgen: Implement pass-through lines in specifications
  nfsd: cancel async COPY operations when admin revokes filesystem state
  nfsd: add controls to set the minimum number of threads per pool
  nfsd: adjust number of running nfsd threads based on activity
  sunrpc: allow svc_recv() to return -ETIMEDOUT and -EBUSY
  sunrpc: split new thread creation into a separate function
  sunrpc: introduce the concept of a minimum number of threads per pool
  sunrpc: track the max number of requested threads in a pool
  ...
2026-02-12 08:23:53 -08:00
Linus Torvalds
37a93dd5c4 Merge tag 'net-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
 "Core & protocols:

   - A significant effort all around the stack to guide the compiler to
     make the right choice when inlining code, to avoid unneeded calls
     for small helper and stack canary overhead in the fast-path.

     This generates better and faster code with very small or no text
     size increases, as in many cases the call generated more code than
     the actual inlined helper.

   - Extend AccECN implementation so that is now functionally complete,
     also allow the user-space enabling it on a per network namespace
     basis.

   - Add support for memory providers with large (above 4K) rx buffer.
     Paired with hw-gro, larger rx buffer sizes reduce the number of
     buffers traversing the stack, dincreasing single stream CPU usage
     by up to ~30%.

   - Do not add HBH header to Big TCP GSO packets. This simplifies the
     RX path, the TX path and the NIC drivers, and is possible because
     user-space taps can now interpret correctly such packets without
     the HBH hint.

   - Allow IPv6 routes to be configured with a gateway address that is
     resolved out of a different interface than the one specified,
     aligning IPv6 to IPv4 behavior.

   - Multi-queue aware sch_cake. This makes it possible to scale the
     rate shaper of sch_cake across multiple CPUs, while still enforcing
     a single global rate on the interface.

   - Add support for the nbcon (new buffer console) infrastructure to
     netconsole, enabling lock-free, priority-based console operations
     that are safer in crash scenarios.

   - Improve the TCP ipv6 output path to cache the flow information,
     saving cpu cycles, reducing cache line misses and stack use.

   - Improve netfilter packet tracker to resolve clashes for most
     protocols, avoiding unneeded drops on rare occasions.

   - Add IP6IP6 tunneling acceleration to the flowtable infrastructure.

   - Reduce tcp socket size by one cache line.

   - Notify neighbour changes atomically, avoiding inconsistencies
     between the notification sequence and the actual states sequence.

   - Add vsock namespace support, allowing complete isolation of vsocks
     across different network namespaces.

   - Improve xsk generic performances with cache-alignment-oriented
     optimizations.

   - Support netconsole automatic target recovery, allowing netconsole
     to reestablish targets when underlying low-level interface comes
     back online.

  Driver API:

   - Support for switching the working mode (automatic vs manual) of a
     DPLL device via netlink.

   - Introduce PHY ports representation to expose multiple front-facing
     media ports over a single MAC.

   - Introduce "rx-polarity" and "tx-polarity" device tree properties,
     to generalize polarity inversion requirements for differential
     signaling.

   - Add helper to create, prepare and enable managed clocks.

  Device drivers:

   - Add Huawei hinic3 PF etherner driver.

   - Add DWMAC glue driver for Motorcomm YT6801 PCIe ethernet
     controller.

   - Add ethernet driver for MaxLinear MxL862xx switches

   - Remove parallel-port Ethernet driver.

   - Convert existing driver timestamp configuration reporting to
     hwtstamp_get and remove legacy ioctl().

   - Convert existing drivers to .get_rx_ring_count(), simplifing the RX
     ring count retrieval. Also remove the legacy fallback path.

   - Ethernet high-speed NICs:
      - Broadcom (bnxt, bng):
         - bnxt: add FW interface update to support FEC stats histogram
           and NVRAM defragmentation
         - bng: add TSO and H/W GRO support
      - nVidia/Mellanox (mlx5):
         - improve latency of channel restart operations, reducing the
           used H/W resources
         - add TSO support for UDP over GRE over VLAN
         - add flow counters support for hardware steering (HWS) rules
         - use a static memory area to store headers for H/W GRO,
           leading to 12% RX tput improvement
      - Intel (100G, ice, idpf):
         - ice: reorganizes layout of Tx and Rx rings for cacheline
           locality and utilizes __cacheline_group* macros on the new
           layouts
         - ice: introduces Synchronous Ethernet (SyncE) support
      - Meta (fbnic):
         - adds debugfs for firmware mailbox and tx/rx rings vectors

   - Ethernet virtual:
      - geneve: introduce GRO/GSO support for double UDP encapsulation

   - Ethernet NICs consumer, and embedded:
      - Synopsys (stmmac):
         - some code refactoring and cleanups
      - RealTek (r8169):
         - add support for RTL8127ATF (10G Fiber SFP)
         - add dash and LTR support
      - Airoha:
         - AN8811HB 2.5 Gbps phy support
      - Freescale (fec):
         - add XDP zero-copy support
      - Thunderbolt:
         - add get link setting support to allow bonding
      - Renesas:
         - add support for RZ/G3L GBETH SoC

   - Ethernet switches:
      - Maxlinear:
         - support R(G)MII slow rate configuration
         - add support for Intel GSW150
      - Motorcomm (yt921x):
         - add DCB/QoS support
      - TI:
         - icssm-prueth: support bridging (STP/RSTP) via the switchdev
           framework

   - Ethernet PHYs:
      - Realtek:
         - enable SGMII and 2500Base-X in-band auto-negotiation
         - simplify and reunify C22/C45 drivers
      - Micrel: convert bindings to DT schema

   - CAN:
      - move skb headroom content into skb extensions, making CAN
        metadata access more robust

   - CAN drivers:
      - rcar_canfd:
         - add support for FD-only mode
         - add support for the RZ/T2H SoC
      - sja1000: cleanup the CAN state handling

   - WiFi:
      - implement EPPKE/802.1X over auth frames support
      - split up drop reasons better, removing generic RX_DROP
      - additional FTM capabilities: 6 GHz support, supported number of
        spatial streams and supported number of LTF repetitions
      - better mac80211 iterators to enumerate resources
      - initial UHR (Wi-Fi 8) support for cfg80211/mac80211

   - WiFi drivers:
      - Qualcomm/Atheros:
         - ath11k: support for Channel Frequency Response measurement
         - ath12k: a significant driver refactor to support multi-wiphy
           devices and and pave the way for future device support in the
           same driver (rather than splitting to ath13k)
         - ath12k: support for the QCC2072 chipset
      - Intel:
         - iwlwifi: partial Neighbor Awareness Networking (NAN) support
         - iwlwifi: initial support for U-NII-9 and IEEE 802.11bn
      - RealTek (rtw89):
         - preparations for RTL8922DE support

   - Bluetooth:
      - implement setsockopt(BT_PHY) to set the connection packet type/PHY
      - set link_policy on incoming ACL connections

   - Bluetooth drivers:
      - btusb: add support for MediaTek7920, Realtek RTL8761BU and 8851BE
      - btqca: add WCN6855 firmware priority selection feature"

* tag 'net-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1254 commits)
  bnge/bng_re: Add a new HSI
  net: macb: Fix tx/rx malfunction after phy link down and up
  af_unix: Fix memleak of newsk in unix_stream_connect().
  net: ti: icssg-prueth: Add optional dependency on HSR
  net: dsa: add basic initial driver for MxL862xx switches
  net: mdio: add unlocked mdiodev C45 bus accessors
  net: dsa: add tag format for MxL862xx switches
  dt-bindings: net: dsa: add MaxLinear MxL862xx
  selftests: drivers: net: hw: Modify toeplitz.c to poll for packets
  octeontx2-pf: Unregister devlink on probe failure
  net: renesas: rswitch: fix forwarding offload statemachine
  ionic: Rate limit unknown xcvr type messages
  tcp: inet6_csk_xmit() optimization
  tcp: populate inet->cork.fl.u.ip6 in tcp_v6_syn_recv_sock()
  tcp: populate inet->cork.fl.u.ip6 in tcp_v6_connect()
  ipv6: inet6_csk_xmit() and inet6_csk_update_pmtu() use inet->cork.fl.u.ip6
  ipv6: use inet->cork.fl.u.ip6 and np->final in ip6_datagram_dst_update()
  ipv6: use np->final in inet6_sk_rebuild_header()
  ipv6: add daddr/final storage in struct ipv6_pinfo
  net: stmmac: qcom-ethqos: fix qcom_ethqos_serdes_powerup()
  ...
2026-02-11 19:31:52 -08:00