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Author SHA1 Message Date
Linus Torvalds
9e7e663345 RDMA v7.2 merge window 
Many AI driven bug fixes, and several big driver API cleanups
 
 - Driver bug fixes and minor cleanups in mlx5, hns, rxe, efa, siw, rtrs,
   mana, irdma, mlx4. Commonly error path flows, integer arithmetic
   overflows on unsafe data, out of bounds access, and use after free
   issues under races.
 
 - Second half of the new udata API for drivers focusing on uAPI response
 
 - bnxt_re supports more options for QP creation that will allow a dv
   path in rdma-core
 
 - Untangle the module dependencies so drivers don't link to ib_uverbs.ko
   as was originall intended
 
 - Provide a new way to handle umems with a consistent simplified uAPI and
   update several drivers to use it. This brings dmabuf support to more
   places and more drivers
 
 - Support for mlx5 rate limit and packet pacing for UD and UC
 
 - A batch of fixes for the new shared FRMR pools infrastructure
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma updates from Jason Gunthorpe:
 "Many AI driven bug fixes, and several big driver API cleanups

   - Driver bug fixes and minor cleanups in mlx5, hns, rxe, efa, siw,
     rtrs, mana, irdma, mlx4. Commonly error path flows, integer
     arithmetic overflows on unsafe data, out of bounds access, and use
     after free issues under races.

   - Second half of the new udata API for drivers focusing on uAPI
     response

   - bnxt_re supports more options for QP creation that will allow a dv
     path in rdma-core

   - Untangle the module dependencies so drivers don't link to
     ib_uverbs.ko as was originall intended

   - Provide a new way to handle umems with a consistent simplified uAPI
     and update several drivers to use it. This brings dmabuf support to
     more places and more drivers

   - Support for mlx5 rate limit and packet pacing for UD and UC

   - A batch of fixes for the new shared FRMR pools infrastructure"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (148 commits)
  RDMA/irdma: Replace waitqueue and flag with completion
  RDMA/hns: Fix memory leak of bonding resources
  RDMA/rtrs-srv: Bound RDMA-Write length to chunk size in rdma_write_sg
  docs: infiniband: correct name of option to enable the ib_uverbs module
  RDMA/bnxt_re: Reject GET_TOGGLE_MEM when toggle page was not allocated
  RDMA/bnxt_re: Fail DBR related page allocation UAPIs if the feature is disabled
  RDMA/bnxt_re: Avoid repeated requests to allocate WC pages
  RDMA/bnxt_re: Proper rollback if the ioremap fails
  RDMA/bnxt_re: Add a max slot check for SQ
  RDMA/bnxt_re: Avoid displaying the kernel pointer
  RDMA/bnxt_re: Free CQ toggle page after firmware teardown
  RDMA/bnxt_re: Free SRQ toggle page after firmware teardown
  RDMA/bnxt_re: Initialize dpi variable to zero
  ABI: sysfs-class-infiniband: minor cleanup
  RDMA/mlx5: Release the HW‑provided UAR index rather than the SW one
  RDMA/mlx5: Fix undefined shift of user RQ WQE size
  RDMA/mlx5: Remove raw RSS QP restrack tracking
  RDMA/mlx5: Remove DCT restrack tracking
  RDMA/mlx5: Drop FRMR pool handle on UMR revoke failure
  RDMA/core: Add ib_frmr_pool_drop for unrecoverable handles
  ...
 2026-06-18 08:16:21 -07:00
Linus Torvalds
e771677c93 iommufd v7.2 merge window pull request 
All various fixes:
 
 - Typo breaking the veventq uAPI for 32 bit userspace
 
 - Several Sashiko found errors in the veventq and fault fd paths
 
 - Fix incorrect use of dmabuf locks, and possible races with iommufd
   destroy and dmabuf revoke
 
 - Sashiko errors found in the uAPI validation for IOMMU_HWPT_INVALIDATE
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Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd

Pull iommufd updates from Jason Gunthorpe:
 "All various fixes:

   - Typo breaking the veventq uAPI for 32 bit userspace

   - Several Sashiko found errors in the veventq and fault fd paths

   - Fix incorrect use of dmabuf locks, and possible races with iommufd
     destroy and dmabuf revoke

   - Sashiko errors found in the uAPI validation for IOMMU_HWPT_INVALIDATE"

* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd:
  iommu: Avoid copying the user array twice in the full-array copy helper
  iommufd/selftest: Add invalidation entry_num and entry_len boundary tests
  iommufd: Set upper bounds on cache invalidation entry_num and entry_len
  iommufd: Clarify IOAS_MAP_FILE dma-buf support
  iommufd: Destroy the pages content after detaching from dmabuf
  iommufd: Take dma_resv lock before dma_buf_unpin() in release path
  iommufd/selftest: Cover invalid read counts on vEVENTQ FD
  iommufd: Avoid partial fault group delivery in iommufd_fault_fops_read()
  iommufd: Break the loop on failure in iommufd_fault_fops_read()
  iommufd: Reject invalid read count in iommufd_fault_fops_read()
  iommufd: Propagate allocation failure in iommufd_veventq_deliver_fetch()
  iommufd: Reject invalid read count in iommufd_veventq_fops_read()
  iommufd: Rewind header length in done if iommufd_veventq_fops_read() fails
  iommufd/selftest: Add boundary tests for veventq_depth
  iommufd: Set veventq_depth upper bound
  iommufd: Move vevent memory allocation outside spinlock
  iommufd: Fix data_len byte-count vs element-count mismatch
  iommufd: Use sizeof(*hdr) instead of sizeof(hdr) in veventq read
 2026-06-17 12:33:23 -07:00
Linus Torvalds
21bd909c78 memblock: updates for 7.2-rc1 
Small fixes and a cleanup:
 * numa emulation: fix detection of under-allocated emulated nodes
 * memblock tests: fix NUMA tests to properly differentiate reserved areas
   with differnet flags
 * mm_init: use div64_ul() instead of do_div() to better express the intent
   of the division
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Merge tag 'memblock-v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock

Pull memblock updates from Mike Rapoport:
 "Small fixes and a cleanup:

   - numa emulation: fix detection of under-allocated emulated nodes

   - memblock tests: fix NUMA tests to properly differentiate reserved
     areas with differnet flags

   - mm_init: use div64_ul() instead of do_div() to better express the
     intent of the division"

* tag 'memblock-v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
  mm: mm_init: use div64_ul() instead of do_div()
  tools/testing/memblock: fix stale NUMA reservation tests
  mm/fake-numa: fix under-allocation detection in uniform split
 2026-06-17 12:16:28 -07:00
Linus Torvalds
0839c8963b livepatching changes for 7.2 
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Merge tag 'livepatching-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching

Pull livepatching updates from Petr Mladek:

 - Fix a potential memory leak in a selftest module

 - Make selftests locale independent

 - Allow running the selftest with older kernels back to 4.12

* tag 'livepatching-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching:
  selftests/livepatch: fix resource leak in test_klp_syscall init error path
  selftests: livepatch: set LC_ALL=C to fix locale-dependent test failure
  selftests: livepatch: Check if stack_order sysfs attribute exists
  selftests: livepatch: Check if replace sysfs attribute exists
  selftests: livepatch: Check if patched sysfs attribute exists
  selftests: livepatch: Introduce does_sysfs_exist function
  selftests: livepatch: Replace true/false module parameter by y/n
  selftests: livepatch: Check for ARCH_HAS_SYSCALL_WRAPPER config
 2026-06-17 12:10:52 -07:00
Linus Torvalds
d44ade05aa virtio,vhost,vdpa: features, fixes 
- new virtio CAN driver
 - support for LoongArch architecture in fw_cfg
 - support for firmware notifications in vdpa/octeon_ep
 - support for VFs in virtio core
 
 - fixes, cleanups all over the place, notably
     - vhost: fix vhost_get_avail_idx for a non empty ring
       fixing an significant old perf regression
     - plus READ_ONCE annotations mean virtio ring is now
       free of KCSAN warnings
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:

 - new virtio CAN driver

 - support for LoongArch architecture in fw_cfg

 - support for firmware notifications in vdpa/octeon_ep

 - support for VFs in virtio core

 - fixes, cleanups all over the place, notably:

    - vhost: fix vhost_get_avail_idx for a non empty ring
      fixing an significant old perf regression

    - READ_ONCE() annotations mean virtio ring is now
      free of KCSAN warnings

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (37 commits)
  can: virtio: Fix comment in UAPI header
  can: virtio: Add virtio CAN driver
  virtio: add num_vf callback to virtio_bus
  fw_cfg: Add support for LoongArch architecture
  vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
  vdpa/octeon_ep: Add vDPA device event handling for firmware notifications
  vdpa/octeon_ep: Use 4 bytes for mailbox signature
  vdpa/octeon_ep: Fix PF->VF mailbox data address calculation
  vhost_task_create: kill unnecessary .exit_signal initialization
  vhost: remove unnecessary module_init/exit functions
  vdpa/mlx5: Use kvzalloc_flex() for MTT command memory
  vdpa_sim_net: switch to dynamic root device
  vdpa_sim_blk: switch to dynamic root device
  virtio-mem: Destroy mutex before freeing virtio_mem
  virtio-balloon: Destroy mutex before freeing virtio_balloon
  tools/virtio: fix build for kmalloc_obj API and missing stubs
  virtio_ring: Add READ_ONCE annotations for device-writable fields
  vduse: fix compat handling for VDUSE_IOTLB_GET_FD/VDUSE_VQ_GET_INFO
  tools/virtio: check mmap return value in vringh_test
  vhost/net: complete zerocopy ubufs only once
  ...
 2026-06-17 11:49:00 -07:00
Linus Torvalds
3dc0df0339 VFIO updates for v7.2-rc1 
- Fix out-of-tree vfio selftest builds with make O=. (Jason Gunthorpe)
 
  - Allow vfio selftests to build when ARCH=x86 is used for 64-bit x86
    builds. (David Matlack)
 
  - Tighten vfio selftest infrastructure with stricter builds, safer
    path handling, sysfs helpers, and reusable device/VF-token setup.
    Build on that to add the SR-IOV UAPI selftest across supported
    IOMMU modes. (Raghavendra Rao Ananta)
 
  - Conclude earlier vfio PCI BAR work already taken as v7.1 fixes by
    replacing vfio_pci_core_setup_barmap() and direct barmap[] access
    with vfio_pci_core_get_iomap().  Fix resulting sparse warnings.
    (Matt Evans)
 
  - Simplify hisi_acc vfio-pci variant driver device-info reads by
    using the mailbox's new direct command-based read helper.
    (Weili Qian)
 
  - Avoid duplicate reset handling in the Xe vfio-pci variant driver
    reset-done path. (GuoHan Zhao)
 
  - Resolve a lockdep circular dependency splat by tracking active
    VFs with a private sriov_active flag rather than calling
    pci_num_vf() under memory_lock. (Raghavendra Rao Ananta)
 
  - Add CXL DVSEC-based readiness polling for Blackwell-Next in the
    nvgrace-gpu vfio-pci variant driver, including interruptible,
    lockless waits to support worst case spec defined timeouts.
    (Ankit Agrawal)
 
  - Prevent vfio_mig_get_next_state() from spinning forever on blocked
    migration state transition. (Junrui Luo)
 
  - Fix a qat vfio variant driver migration resume race by taking the
    migration file lock before boundary checks. (Giovanni Cabiddu)
 
  - Add explicit dependencies between vfio selftest output object files
    and output directories to ensure directories are always created.
    (David Matlack)
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Merge tag 'vfio-v7.2-rc1' of https://github.com/awilliam/linux-vfio

Pull VFIO updates from Alex Williamson:

 - Fix out-of-tree vfio selftest builds with make O= (Jason Gunthorpe)

 - Allow vfio selftests to build when ARCH=x86 is used for 64-bit x86
   builds (David Matlack)

 - Tighten vfio selftest infrastructure with stricter builds, safer path
   handling, sysfs helpers, and reusable device/VF-token setup. Build on
   that to add the SR-IOV UAPI selftest across supported IOMMU modes
   (Raghavendra Rao Ananta)

 - Conclude earlier vfio PCI BAR work already taken as v7.1 fixes by
   replacing vfio_pci_core_setup_barmap() and direct barmap[] access
   with vfio_pci_core_get_iomap(). Fix resulting sparse warnings (Matt
   Evans)

 - Simplify hisi_acc vfio-pci variant driver device-info reads by using
   the mailbox's new direct command-based read helper (Weili Qian)

 - Avoid duplicate reset handling in the Xe vfio-pci variant driver
   reset-done path (GuoHan Zhao)

 - Resolve a lockdep circular dependency splat by tracking active VFs
   with a private sriov_active flag rather than calling pci_num_vf()
   under memory_lock (Raghavendra Rao Ananta)

 - Add CXL DVSEC-based readiness polling for Blackwell-Next in the
   nvgrace-gpu vfio-pci variant driver, including interruptible,
   lockless waits to support worst case spec defined timeouts (Ankit
   Agrawal)

 - Prevent vfio_mig_get_next_state() from spinning forever on blocked
   migration state transition (Junrui Luo)

 - Fix a qat vfio variant driver migration resume race by taking the
   migration file lock before boundary checks (Giovanni Cabiddu)

 - Add explicit dependencies between vfio selftest output object files
   and output directories to ensure directories are always created
   (David Matlack)

* tag 'vfio-v7.2-rc1' of https://github.com/awilliam/linux-vfio:
  vfio: selftests: Ensure libvfio output dirs are always created
  vfio/qat: fix f_pos race in qat_vf_resume_write()
  vfio: prevent infinite loop in vfio_mig_get_next_state() on blocked arc
  vfio/nvgrace-gpu: Add Blackwell-Next GPU readiness check via CXL DVSEC
  vfio/pci: Use a private flag to prevent power state change with VFs
  vfio/pci: Fix sparse warning in vfio_pci_core_get_iomap()
  vfio/xe: avoid duplicate reset in xe_vfio_pci_reset_done
  hisi_acc_vfio_pci: simplify the command for reading device information
  vfio/pci: Replace vfio_pci_core_setup_barmap() with vfio_pci_core_get_iomap()
  vfio: selftests: Add tests to validate SR-IOV UAPI
  vfio: selftests: Add helpers to alloc/free vfio_pci_device
  vfio: selftests: Add helper to set/override a vf_token
  vfio: selftests: Expose more vfio_pci_device functions
  vfio: selftests: Extend container/iommufd setup for passing vf_token
  vfio: selftests: Introduce a sysfs lib
  vfio: selftests: Introduce snprintf_assert()
  vfio: selftests: Add -Wall and -Werror to the Makefile
  vfio: selftests: Allow builds when ARCH=x86
  vfio: selftests: Fix out-of-tree build with make O=
 2026-06-17 11:42:17 -07:00
Linus Torvalds
5b33fc6492 sched_ext: Changes for v7.2 
This depends on the BPF arena work in bpf-next and should be pulled after
 it. for-7.1-fixes was merged in a few times to avoid conflicts with the
 feature changes.
 
 - Most of this continues the in-development sub-scheduler support, which
   lets a root BPF scheduler delegate to nested sub-schedulers. The
   dispatch-path building blocks landed in 7.1. A follow-up patchset in
   development will complete enqueue-path support for hierarchical
   scheduling. This cycle adds most of that infrastructure:
 
   - Topological CPU IDs (cids): a dense, topology-ordered CPU numbering
     where the CPUs of a core, LLC, or NUMA node form contiguous ranges,
     so a topology unit becomes a (start, length) slice. Raw CPU numbers
     are sparse and don't track topological closeness, which makes them
     clumsy for sharding work across sub-schedulers and awkward in BPF.
 
   - cmask: bitmaps windowed over a slice of cid space, so a sub-scheduler
     can track, for example, the idle cids of its shard without a full
     NR_CPUS cpumask.
 
   - A struct_ops variant that cid-form sub-schedulers register with,
     along with the cid-form kfuncs they call.
 
   - BPF arena integration, which sub-scheduler support is built on. The
     bpf-next additions let the kernel read and write the BPF scheduler's
     arena directly, turning it into a real kernel/BPF shared-memory
     channel. Shared state like the per-CPU cmask now lives there.
 
   - scx_qmap is reworked to exercise the new arena and cid interfaces.
 
 - Exit-dump improvements: dump the faulting CPU first, expose the exit
   CPU to BPF and userspace, and normalize the dump header.
 
 - Misc kfuncs and cleanups: a task-ID lookup kfunc, __printf checking on
   the error and dump formatters, header reorganization, and assorted
   fixes.
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Merge tag 'sched_ext-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext

Pull sched_ext updates from Tejun Heo:
 "Most of this continues the in-development sub-scheduler support, which
  lets a root BPF scheduler delegate to nested sub-schedulers. The
  dispatch-path building blocks landed in 7.1. A follow-up patchset in
  development will complete enqueue-path support for hierarchical
  scheduling. This cycle adds most of that infrastructure:

   - Topological CPU IDs (cids): a dense, topology-ordered CPU numbering
     where the CPUs of a core, LLC, or NUMA node form contiguous ranges,
     so a topology unit becomes a (start, length) slice. Raw CPU numbers
     are sparse and don't track topological closeness, which makes them
     clumsy for sharding work across sub-schedulers and awkward in BPF.

   - cmask: bitmaps windowed over a slice of cid space, so a
     sub-scheduler can track, for example, the idle cids of its shard
     without a full NR_CPUS cpumask.

   - A struct_ops variant that cid-form sub-schedulers register with,
     along with the cid-form kfuncs they call.

   - BPF arena integration, which sub-scheduler support is built on. The
     bpf-next additions let the kernel read and write the BPF
     scheduler's arena directly, turning it into a real kernel/BPF
     shared-memory channel. Shared state like the per-CPU cmask now
     lives there.

   - scx_qmap is reworked to exercise the new arena and cid interfaces.

  Additionally:

   - Exit-dump improvements: dump the faulting CPU first, expose the
     exit CPU to BPF and userspace, and normalize the dump header.

   - Misc kfuncs and cleanups: a task-ID lookup kfunc, __printf checking
     on the error and dump formatters, header reorganization, and
     assorted fixes"

* tag 'sched_ext-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: (59 commits)
  sched_ext: Add scx_arena_to_kaddr() / scx_kaddr_to_arena()
  sched_ext: Make scx_bpf_kick_cid() return s32
  sched_ext: Add scx_cmask_test() and scx_cmask_for_each_cid()
  tools/sched_ext: Order single-cid cmask helpers as (cid, mask)
  sched_ext: Order single-cid cmask helpers as (cid, mask)
  selftests/sched_ext: Fix dsq_move_to_local check
  sched_ext: Guard BPF arena helper calls to fix 32-bit build
  sched_ext: idle: Fix errno loss in scx_idle_init()
  sched_ext: Convert ops.set_cmask() to arena-resident cmask
  sched_ext: Sub-allocator over kernel-claimed BPF arena pages
  sched_ext: Require an arena for cid-form schedulers
  sched_ext: Add cmask mask ops
  sched_ext: Track bits[] storage size in struct scx_cmask
  sched_ext: Rename scx_cmask.nr_bits to nr_cids
  tools/sched_ext: scx_qmap: Fix qa arena placement
  sched_ext: Mark !CONFIG_EXT_SUB_SCHED dummy stubs static inline
  sched_ext: Replace tryget_task_struct() with get_task_struct()
  sched_ext: Add scx_task_iter_relock() and use it in scx_root_enable_workfn()
  sched_ext: Fix ops_cid layout assert
  sched_ext: Use offsetofend on both sides of the ops_cid layout assert
  ...
 2026-06-17 12:10:11 +01:00
Linus Torvalds
83476cc97b cgroup: Changes for v7.2 
- Last cycle deferred css teardown on cgroup removal until the cgroup
   depopulated, so a css is not taken offline while tasks can still
   reference it. Disabling a controller through cgroup.subtree_control
   still had the same problem. This reworks the deferral from per-cgroup
   to per-css so that path is covered too.
 
 - New RDMA controller monitoring files: rdma.peak for per-device peak
   usage and rdma.events / rdma.events.local for resource-limit
   exhaustion. The max-limit parser was rewritten, fixing two input
   parsing bugs.
 
 - cpuset: fix a sched-domain leak on the domain-rebuild failure path and
   skip a redundant hardwall ancestor scan on v2.
 
 - Misc: pair the remaining lockless cgroup.max.* reads with WRITE_ONCE,
   assorted selftest robustness fixes, and doc path corrections.
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Merge tag 'cgroup-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

Pull cgroup updates from Tejun Heo:

 - Last cycle deferred css teardown on cgroup removal until the cgroup
   depopulated, so a css is not taken offline while tasks can still
   reference it. Disabling a controller through cgroup.subtree_control
   still had the same problem. This reworks the deferral from per-cgroup
   to per-css so that path is covered too.

 - New RDMA controller monitoring files: rdma.peak for per-device peak
   usage and rdma.events / rdma.events.local for resource-limit
   exhaustion. The max-limit parser was rewritten, fixing two input
   parsing bugs.

 - cpuset: fix a sched-domain leak on the domain-rebuild failure path
   and skip a redundant hardwall ancestor scan on v2.

 - Misc: pair the remaining lockless cgroup.max.* reads with WRITE_ONCE,
   assorted selftest robustness fixes, and doc path corrections.

* tag 'cgroup-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (22 commits)
  cgroup: Migrate tasks to the root css when a controller is rebound
  docs: cgroup: Fix stale source file paths
  cgroup/cpuset: Free sched domains on rebuild guard failure
  cgroup: pair max limit READ_ONCE() with WRITE_ONCE()
  selftests/cgroup: enable memory controller in hugetlb memcg test
  cgroup/rdma: Drop unnecessary READ_ONCE() on event counters
  cgroup: Defer kill_css_finish() in cgroup_apply_control_disable()
  cgroup: Add per-subsys-css kill_css_finish deferral
  cgroup: Move populated counters to cgroup_subsys_state
  cgroup: Annotate unlocked nr_populated_* accesses with READ_ONCE/WRITE_ONCE
  cgroup: Inline cgroup_has_tasks() in cgroup.h
  cgroup/rdma: document rdma.peak, rdma.events and rdma.events.local
  cgroup/rdma: add rdma.events.local for per-cgroup allocation failure attribution
  cgroup/rdma: add rdma.events to track resource limit exhaustion
  cgroup/rdma: add rdma.peak for per-device peak usage tracking
  selftests/cgroup: check malloc return value in alloc_anon functions
  cgroup/cpuset: Skip hardwall ancestor scan in cpuset v2 in cpuset_current_node_allowed()
  selftests/cgroup: fix misleading debug message in test_cgfreezer_time_child
  selftests/cgroup: fix child process escaping to parent cleanup in test_cpucg_nice
  selftests/cgroup: Add NULL check after malloc in cgroup_util.c
  ...
 2026-06-17 12:03:56 +01:00
Linus Torvalds
9c87e61e3c bpf-next-7.2 
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Merge tag 'bpf-next-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Pull bpf updates from Alexei Starovoitov:
 "Major changes:

   - Recover from BPF arena page faults using a scratch page and add
     ptep_try_set() for lockless empty-slot installs on x86 and arm64.

     This allows BPF kfuncs to access arena pointers directly.

     The 'arena_direct_access' stable branch was created for this work
     and was pulled into sched-ext and bpf-next trees (Tejun Heo, Kumar
     Kartikeya Dwivedi)

   - Lift old restriction and support 6+ arguments in BPF programs and
     kfuncs on x86 and arm64 (Yonghong Song, Puranjay Mohan)

  Other features and fixes:

   - Add 24-bit BTF vlen and reclaim unused bits in the BTF UAPI to ease
     addition of new BTF kinds (Alan Maguire)

   - Raise the maximum BPF call chain depth from 8 to 16 frames (Alexei
     Starovoitov)

   - Refactor object relationship tracking in the verifier and fix a
     dynptr use-after-free bug (Amery Hung)

   - Harden the signed program loader and reject exclusive maps as inner
     maps (Daniel Borkmann)

   - Replace the verifier min/max bounds fields with a circular number
     (cnum) representation and improve 32->64 bit range refinements
     (Eduard Zingerman)

   - Introduce the arena library and runtime (libarena) with a buddy
     allocator, rbtree and SPMC queue data structures, ASAN support and
     a parallel test harness. Allow subprograms to return arena pointers
     and switch to a BTF type-tag based __arena annotation (Emil
     Tsalapatis)

   - Cache build IDs in the sleepable stackmap path and avoid faultable
     build ID reads under mm locks (Ihor Solodrai)

   - Introduce the tracing_multi link to attach a single BPF program to
     many kernel functions at once. Allow specifying the uprobe_multi
     target via FD (Jiri Olsa)

   - Extend the bpf_list family of kfuncs with bpf_list_add/del(), and
     bpf_list_is_first/is_last/empty() (Kaitao Cheng)

   - Extend the BPF syscall with common attributes support for
     prog_load, btf_load and map_create (Leon Hwang)

   - Wrap rhashtable as BPF map (Mykyta Yatsenko, Herbert Xu)

   - Add sleepable support for tracepoint programs and fix deadlocks in
     LRU map due to NMI reentry (Mykyta Yatsenko)

   - Fix OOB access in bpf_flow_keys, fix nullness analysis of inner
     arrays, enforce write checks for global subprograms (Nuoqi Gui)

   - Report the maximum combined stack depth and print a breakdown of
     instructions processed per subprogram (Paul Chaignon)

   - Add an XDP load-balancer benchmark and arm64 JIT support for stack
     arguments (Puranjay Mohan)

   - Add kfuncs to traverse over wakeup_sources (Samuel Wu)

   - Allow sleepable BPF programs to use LPM trie maps directly (Vlad
     Poenaru)

   - Many more fixes and cleanups across the verifier, BTF, sockmap,
     devmap, bpffs, security hooks, s390/riscv/loongarch JITs,
     rqspinlock, libbpf, bpftool, selftests"

* tag 'bpf-next-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (336 commits)
  selftests/bpf: Work around llvm stack overflow in crypto progs
  selftests/bpf: add test for bpf_msg_pop_data() overflow
  bpf, sockmap: fix integer overflow in bpf_msg_pop_data() bounds check
  sockmap: Fix use-after-free in udp_bpf_recvmsg()
  bpf, sockmap: keep sk_msg copy state in sync
  bpf, sockmap: Fix wrong rsge offset in bpf_msg_push_data()
  bpf, sockmap: reject overflowing copy + len in bpf_msg_push_data()
  selftsets/bpf: Retry map update on helper_fill_hashmap()
  selftests/bpf: Add test for sleepable lsm_cgroup rejection
  selftests/bpf: Add test to verify the fix for bpf_setsockopt() helper
  bpf: Fix bpf_get/setsockopt to tos for ipv4-mapped ipv6 socket
  selftests/bpf: Avoid static LLVM linking for cross builds
  selftests/bpf: Use common CFLAGS for urandom_read
  selftests/bpf: Initialize operation name before use
  tools/bpf: build: Append extra cflags
  libbpf: Initialize CFLAGS before including Makefile.include
  bpftool: Append extra host flags
  bpftool: Avoid adding EXTRA_CFLAGS to HOST_CFLAGS
  bpftool: Pass host flags to bootstrap libbpf
  selftests/bpf: correct CONFIG_PPC64 macro name in comment
  ...
 2026-06-17 09:18:14 +01:00
Linus Torvalds
b85966adbf Networking changes for 7.2. 
Core & protocols
 ----------------
 
  - Work on removing rtnl_lock protection throughout the stack continues.
    In this chapter:
     - don't use rtnl_lock for IPv6 multicast routing configuration
     - don't take rtnl_lock in ethtool for modern drivers
     - prepare Qdisc dump callbacks for rtnl_lock removal
 
  - Support dumping just ifindex + name of all interfaces, under RCU.
    It's a common operation for Netlink CLI tools (when translating
    names to ifindexes) and previously required full rtnl_lock.
 
  - Support dumping qdiscs and page pools for a specific netdev. Even tho
    user space wants a dump of all netdevs, most of the time, the OOO
    programming model results in repeating the dump for each netdev.
    Which, in absence of a cache, leads to a O(n^2) behavior.
 
  - Flush nexthops once on multi-nexthop removal (e.g. when device goes
    down), another O(n^2) -> O(n) improvement.
 
  - Rehash locally generated traffic to a different nexthop on retransmit
    timeout.
 
  - Honor oif when choosing nexthop for locally generated IPv6 traffic.
 
  - Convert TCP Auth Option to crypto library, and drop non-RFC algos.
 
  - Increase subflow limits in MPTCP to 64 and endpoint limit to 256.
 
  - Support MPTCP signaling of IPv6 address + port (ADD_ADDR). We need
    to selectively skip reporting of the standard TCP Timestamp option,
    because they won't fit into the header space together (12 + 30 > 40).
 
  - Support using bridge neighbor suppression, Duplicate Address
    Detection, Gratuitous ARP and unsolicited NA forwarding - in EVPN
    deployments, e.g. VXLAN fabrics (IPv4 and IPv6).
 
  - Improve link state reporting for upper netdevs (e.g. macvlan) over
    tunnel devices (again, mostly for EVPN deployments).
 
  - Support binding GENEVE tunnels to a local address.
 
  - Speed up UDP tunnel destruction (remove one synchronize_rcu()).
 
  - Support exponential field encoding in multicast (IGMPv3 and MLDv2).
 
  - Support attaching PSP crypto offload to containers (veth, netkit).
 
  - Add a new IPSec Netlink message XFRM_MSG_MIGRATE_STATE that allows
    migrating individual IPsec SAs independently of their policies.
    The existing XFRM_MSG_MIGRATE is tightly coupled to policy+SA
    migration, lacks SPI for unique SA identification, and cannot express
    reqid changes or migrate Transport mode selectors. The new interface
    identifies the SA via SPI and mark, supports reqid changes, address
    family changes, encap removal, and uses an atomic create+install
    flow under x->lock to prevent SN/IV reuse during AEAD SA migration.
 
  - Implement GRO/GSO support for PPPoE.
 
  - Convert sockopt callbacks in a number of protocols to iov_iter.
 
 Cross-tree stuff
 ----------------
 
  - Remove support for Crypto TFM cloning (unblocked after the TCP Auth
    Option rework). This feature regressed performance for all crypto API
    users, since it changed crypto transformation objects into reference-
    -counted objects.
 
  - Add FCrypt-PCBC implementation to rxrpc and remove it from the global
    crypto API as obsolete and insecure.
 
 Wireless
 --------
 
  - Major rework of station bandwidth handling, fixing issues with lower
    capability than AP.
 
  - Cleanups for EMLSR spec issues (drafts differed).
 
  - More Neighbor Awareness Networking (Wi-Fi Aware) work (multicast,
    schedule improvements, multi-station etc.)
 
  - Some Ultra High Reliability (UHR) / IEEE 802.11bn (D1.4) work
    (e.g. non-primary channel access, UHR DBE support).
 
  - Fine Timing Measurement ranging (i.e. distance measurement) APIs.
 
 Netfilter
 ---------
 
  - Use per-rule hash initval in nf_conncount. This avoids unnecessary
    lock contention with short keys (e.g. conntrack zones) in different
    namespaces.
 
  - Various safety improvements, both in packet parsing and object
    lifetimes. Notably add refcounts to conntrack timeout policy.
 
 Deletions
 ---------
 
  - Remove TLS + sockmap integration. TLS wants to pin user pages
    to avoid a copy, and sockmap wants to write to the input stream.
    More work on this integration is clearly needed, and we can't find
    any users (original author admitted that they never deployed it).
 
  - Remove support for TLS offload with TCP Offload Engine (the far
    more common opportunistic offload is retained). The locking looks
    unfixable (driver sleeps under TCP spin locks) and people from
    the vendor that added this are AWOL.
 
  - Remove more ATM code, trying to leave behind only what PPPoATM needs,
    AAL5 and br2684 with permanent circuits.
 
  - Remove AppleTalk. Let it join hamradio in our out of tree protocol
    graveyard, I mean, repository.
 
  - Disable 32-bit x_tables compatibility (32bit binaries on 64bit kernel)
    interface in user namespaces. To be deleted completely, soon.
 
  - Remove 5/10 MHz support from cfg80211/mac80211.
 
 Drivers
 -------
 
  - Software:
    - Support DEVMEM/DMABUF Tx over NETMEM_TX_NO_DMA devices (netkit).
    - bonding: add knob to strictly follow 802.3ad for link state.
 
  - New drivers:
    - Alibaba Elastic Ethernet Adaptor (cloud vNIC).
    - NXP NETC switch within i.MX94.
 
  - DPLL:
    - Add operational state to pins (implement in zl3073x).
    - Add generic DPLL type, for daisy-chaining DPLLs (implement in ice).
 
  - Ethernet high-speed NICs:
    - Huawei (hinic3):
      - enhance tc flow offload support with queue selection, tunnels
    - nVidia/Mellanox:
      - avoid over-copying payload to the skb's linear part (up to 60%
        win for LRO on slow CPUs like ARM64 V2)
      - expose more per-queue stats over the standard API
      - support additional, unprivileged PFs in the DPU configuration
      - support Socket Direct (multi-PF) with switchdev offloads
      - add a pool / frag allocator for DMA mapped buffers for control
        objects, save memory on systems with 64kB page size
      - take advantage of the ability to dynamically change RSS table
        size, even when table is configured by the user
      - increase the max RSS table size for even traffic distribution
 
  - Ethernet NICs:
    - Marvell/Aquantia:
      - AQC113 PTP support
    - Realtek USB (r8152):
      - support 10Gbit Link Speeds and Energy-Efficient Ethernet (EEE)
      - support firmware loaded (for RTL8157/RTL8159)
      - support for the RTL8159
    - Intel (ixgbe):
      - support Energy-Efficient Ethernet (EEE) on E610 devices
 
  - Ethernet switches:
    - Airoha:
      - support multiple netdevs on a single GDM block / port
    - Marvell (mv88e6xxx):
      - support SERDES of mv88e6321
    - Microchip (ksz8/9):
      - rework the driver callbacks to remove one indirection layer
    - Motorcomm (yt921x):
      - support port rate policing
      - support TBF qdisc offload
      - support ACL/flower offload
    - nVidia/Mellanox:
      - expose per-PG rx_discards
    - Realtek:
      - rtl8365mb: bridge offloading and VLAN support
 
  - Ethernet PHYs:
    - Airoha:
      - support Airoha AN8801R Gigabit PHYs.
    - Micrel:
      - implement 3 low-loss cable tunables
    - Realtek:
      - support MDI swapping for RTL8226-CG
      - support MDIO for RTL931x
    - Qualcomm:
      - at803x: Rx and Tx clock management for IPQ5018 PHY
    - Motorcomm:
      - support YT8522 100M RMII PHY
      - set drive strength in YT8531s RGMII
    - TI:
      - dp83822: add optional external PHY clock
 
  - Bluetooth:
    - hci_sync: add support for HCI_LE_Set_Host_Feature [v2]
    - SMP: use AES-CMAC library API
    - Intel:
      - support Product level reset
      - support smart trigger dump
    - Mediatek:
      - add event filter to filter specific event
    - Realtek:
      - fix RTL8761B/BU broken LE extended scan
 
  - WiFi:
    - Broadcom (b43):
      - new support for a 11n device
    - MediaTek (mt76):
      - support mt7927
      - mt792x: broken usb transport detection
      - mt7921: regulatory improvements
    - Qualcomm (ath9k):
      - GPIO interface improvements
    - Qualcomm (ath12k):
      - WDS support
      - replace dynamic memory allocation in WMI Rx path
      - thermal throttling/cooling device support
      - 6 GHz incumbent interference detection
      - channel 177 in 5 GHz
    - Realtek (rt89):
      - RTL8922AU support
      - USB 3 mode switch for performance
      - better monitor radiotap support
      - RTL8922DE preparations
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Work on removing rtnl_lock protection throughout the stack
     continues. In this chapter:
       - don't use rtnl_lock for IPv6 multicast routing configuration
       - don't take rtnl_lock in ethtool for modern drivers
       - prepare Qdisc dump callbacks for rtnl_lock removal

   - Support dumping just ifindex + name of all interfaces, under RCU.
     It's a common operation for Netlink CLI tools (when translating
     names to ifindexes) and previously required full rtnl_lock.

   - Support dumping qdiscs and page pools for a specific netdev. Even
     tho user space wants a dump of all netdevs, most of the time, the
     OOO programming model results in repeating the dump for each
     netdev. Which, in absence of a cache, leads to a O(n^2) behavior.

   - Flush nexthops once on multi-nexthop removal (e.g. when device goes
     down), another O(n^2) -> O(n) improvement.

   - Rehash locally generated traffic to a different nexthop on
     retransmit timeout.

   - Honor oif when choosing nexthop for locally generated IPv6 traffic.

   - Convert TCP Auth Option to crypto library, and drop non-RFC algos.

   - Increase subflow limits in MPTCP to 64 and endpoint limit to 256.

   - Support MPTCP signaling of IPv6 address + port (ADD_ADDR). We need
     to selectively skip reporting of the standard TCP Timestamp option,
     because they won't fit into the header space together (12 + 30 >
     40).

   - Support using bridge neighbor suppression, Duplicate Address
     Detection, Gratuitous ARP and unsolicited NA forwarding - in EVPN
     deployments, e.g. VXLAN fabrics (IPv4 and IPv6).

   - Improve link state reporting for upper netdevs (e.g. macvlan) over
     tunnel devices (again, mostly for EVPN deployments).

   - Support binding GENEVE tunnels to a local address.

   - Speed up UDP tunnel destruction (remove one synchronize_rcu()).

   - Support exponential field encoding in multicast (IGMPv3 and MLDv2).

   - Support attaching PSP crypto offload to containers (veth, netkit).

   - Add a new IPSec Netlink message XFRM_MSG_MIGRATE_STATE that allows
     migrating individual IPsec SAs independently of their policies.

     The existing XFRM_MSG_MIGRATE is tightly coupled to policy+SA
     migration, lacks SPI for unique SA identification, and cannot
     express reqid changes or migrate Transport mode selectors.

     The new interface identifies the SA via SPI and mark, supports
     reqid changes, address family changes, encap removal, and uses an
     atomic create+install flow under x->lock to prevent SN/IV reuse
     during AEAD SA migration.

   - Implement GRO/GSO support for PPPoE.

   - Convert sockopt callbacks in a number of protocols to iov_iter.

  Cross-tree stuff:

   - Remove support for Crypto TFM cloning (unblocked after the TCP Auth
     Option rework). This feature regressed performance for all crypto
     API users, since it changed crypto transformation objects into
     reference-counted objects.

   - Add FCrypt-PCBC implementation to rxrpc and remove it from the
     global crypto API as obsolete and insecure.

  Wireless:

   - Major rework of station bandwidth handling, fixing issues with
     lower capability than AP.

   - Cleanups for EMLSR spec issues (drafts differed).

   - More Neighbor Awareness Networking (Wi-Fi Aware) work (multicast,
     schedule improvements, multi-station etc.)

   - Some Ultra High Reliability (UHR) / IEEE 802.11bn (D1.4) work
     (e.g. non-primary channel access, UHR DBE support).

   - Fine Timing Measurement ranging (i.e. distance measurement) APIs.

  Netfilter:

   - Use per-rule hash initval in nf_conncount. This avoids unnecessary
     lock contention with short keys (e.g. conntrack zones) in different
     namespaces.

   - Various safety improvements, both in packet parsing and object
     lifetimes. Notably add refcounts to conntrack timeout policy.

  Deletions:

   - Remove TLS + sockmap integration. TLS wants to pin user pages to
     avoid a copy, and sockmap wants to write to the input stream. More
     work on this integration is clearly needed, and we can't find any
     users (original author admitted that they never deployed it).

   - Remove support for TLS offload with TCP Offload Engine (the far
     more common opportunistic offload is retained). The locking looks
     unfixable (driver sleeps under TCP spin locks) and people from the
     vendor that added this are AWOL.

   - Remove more ATM code, trying to leave behind only what PPPoATM
     needs, AAL5 and br2684 with permanent circuits.

   - Remove AppleTalk. Let it join hamradio in our out of tree protocol
     graveyard, I mean, repository.

   - Disable 32-bit x_tables compatibility (32bit binaries on 64bit
     kernel) interface in user namespaces. To be deleted completely,
     soon.

   - Remove 5/10 MHz support from cfg80211/mac80211.

  Drivers:

   - Software:
       - Support DEVMEM/DMABUF Tx over NETMEM_TX_NO_DMA devices (netkit)
       - bonding: add knob to strictly follow 802.3ad for link state

   - New drivers:
       - Alibaba Elastic Ethernet Adaptor (cloud vNIC).
       - NXP NETC switch within i.MX94.

   - DPLL:
       - Add operational state to pins (implement in zl3073x).
       - Add generic DPLL type, for daisy-chaining DPLLs (implement in ice).

   - Ethernet high-speed NICs:
       - Huawei (hinic3):
           - enhance tc flow offload support with queue selection,
             tunnels
       - nVidia/Mellanox:
           - avoid over-copying payload to the skb's linear part (up to
             60% win for LRO on slow CPUs like ARM64 V2)
           - expose more per-queue stats over the standard API
           - support additional, unprivileged PFs in the DPU
             configuration
           - support Socket Direct (multi-PF) with switchdev offloads
           - add a pool / frag allocator for DMA mapped buffers for
             control objects, save memory on systems with 64kB page size
           - take advantage of the ability to dynamically change RSS
             table size, even when table is configured by the user
           - increase the max RSS table size for even traffic
             distribution

   - Ethernet NICs:
       - Marvell/Aquantia:
           - AQC113 PTP support
       - Realtek USB (r8152):
           - support 10Gbit Link Speeds and Energy-Efficient Ethernet
             (EEE)
           - support firmware loaded (for RTL8157/RTL8159)
           - support for the RTL8159
       - Intel (ixgbe):
           - support Energy-Efficient Ethernet (EEE) on E610 devices

   - Ethernet switches:
       - Airoha:
           - support multiple netdevs on a single GDM block / port
       - Marvell (mv88e6xxx):
           - support SERDES of mv88e6321
       - Microchip (ksz8/9):
           - rework the driver callbacks to remove one indirection layer
       - Motorcomm (yt921x):
           - support port rate policing
           - support TBF qdisc offload
           - support ACL/flower offload
       - nVidia/Mellanox:
           - expose per-PG rx_discards
       - Realtek:
           - rtl8365mb: bridge offloading and VLAN support

   - Ethernet PHYs:
       - Airoha:
           - support Airoha AN8801R Gigabit PHYs.
       - Micrel:
           - implement 3 low-loss cable tunables
       - Realtek:
           - support MDI swapping for RTL8226-CG
           - support MDIO for RTL931x
       - Qualcomm:
           - at803x: Rx and Tx clock management for IPQ5018 PHY
       - Motorcomm:
           - support YT8522 100M RMII PHY
           - set drive strength in YT8531s RGMII
       - TI:
           - dp83822: add optional external PHY clock

   - Bluetooth:
       - hci_sync: add support for HCI_LE_Set_Host_Feature [v2]
       - SMP: use AES-CMAC library API
       - Intel:
           - support Product level reset
           - support smart trigger dump
       - Mediatek:
           - add event filter to filter specific event
       - Realtek:
           - fix RTL8761B/BU broken LE extended scan

   - WiFi:
       - Broadcom (b43):
           - new support for a 11n device
       - MediaTek (mt76):
           - support mt7927
           - mt792x: broken usb transport detection
           - mt7921: regulatory improvements
       - Qualcomm (ath9k):
           - GPIO interface improvements
       - Qualcomm (ath12k):
           - WDS support
           - replace dynamic memory allocation in WMI Rx path
           - thermal throttling/cooling device support
           - 6 GHz incumbent interference detection
           - channel 177 in 5 GHz
       - Realtek (rt89):
           - RTL8922AU support
           - USB 3 mode switch for performance
           - better monitor radiotap support
           - RTL8922DE preparations"

* tag 'net-next-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1778 commits)
  ipv4: fib_rule: Move fib4_rules_exit() to ->exit().
  net: serialize netif_running() check in enqueue_to_backlog()
  net: skmsg: preserve sg.copy across SG transforms
  appletalk: move the protocol out of tree
  appletalk: stop storing per-interface state in struct net_device
  selftests/bpf: test that TLS crypto is rejected on a sockmap socket
  selftests/bpf: drop the unused kTLS program from test_sockmap
  selftests/bpf: remove sockmap + ktls tests
  tls: remove dead sockmap (psock) handling from the SW path
  tls: reject the combination of TLS and sockmap
  atm: remove orphaned uAPI for deleted drivers, protocols and SVCs
  atm: remove unused ATM PHY operations
  atm: remove the unused pre_send and send_bh device operations
  atm: remove the unused change_qos device operation
  atm: remove SVC socket support and the signaling daemon interface
  atm: remove the local ATM (NSAP) address registry
  atm: remove dead SONET PHY ioctls
  atm: remove the unused send_oam / push_oam callbacks
  atm: remove AAL3/4 transport support
  net: dsa: sja1105: fix lastused timestamp in flower stats
  ...
 2026-06-17 08:17:00 +01:00
Jakub Kicinski
d755d45bc0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 
Merge in late fixes in preparation for the net-next PR.

Conflicts:

net/tls/tls_sw.c
  406e8a651a ("net: skmsg: preserve sg.copy across SG transforms")
  79511603a6 ("tls: remove dead sockmap (psock) handling from the SW path")

drivers/net/ethernet/microsoft/mana/mana_en.c
  f8fd56977e ("net: mana: guard TX wq object destroy with INVALID_MANA_HANDLE check")
  d07efe5a6e ("net: mana: Use per-queue allocation for tx_qp to reduce allocation size")
https://lore.kernel.org/ajAPXu-C_PuTgV-a@sirena.org.uk

No adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2026-06-16 14:59:58 -07:00
Jakub Kicinski
5949a7cf11 selftests/bpf: test that TLS crypto is rejected on a sockmap socket 
TLS and sockmap are mutually exclusive. We already have a test
for the sockmap side rejecting kTLS, add the inverse test matching
patch 1 of this series.

Link: https://patch.msgid.link/20260614014102.461064-6-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2026-06-16 08:55:41 -07:00
Jakub Kicinski
6af8971d91 selftests/bpf: drop the unused kTLS program from test_sockmap 
With the sockmap + kTLS tests gone, the BPF-side support in test_sockmap
is dead: the tls_sock_map map and bpf_prog3 (which redirected skbs into
it) are no longer referenced. Remove them, along with the now-unused
bpf_write_pass() helper.

bpf_prog3 was progs[2], so renumber the progs[] users in test_sockmap.c:
the sockops program drops to progs[2] and the sk_msg tx programs to
progs[3..7]. Shrink the map/prog arrays from 9 to 8 and drop the
tls_sock_map entry (the last one) from map_names[] to match.

Link: https://patch.msgid.link/20260614014102.461064-5-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2026-06-16 08:55:41 -07:00
Jakub Kicinski
faf89584e4 selftests/bpf: remove sockmap + ktls tests 
The combination of sockmap and TLS is no longer supported - installing
the TLS ULP on a sockmap socket (and vice versa) is now rejected. Remove
the tests that exercise the combination along with their BPF program;
the file covered nothing but sockmap sockets holding kTLS contexts.

Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://patch.msgid.link/20260614014102.461064-4-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2026-06-16 08:55:41 -07:00
Linus Torvalds
6b5a2b7d9b RTLA patches for v7.2 
- Fix discrepancy in --dump-tasks option
 
   Due to a mistake, rtla-timerlat-hist used the CLI syntax "--dump-task"
   instead of the documented "--dump-tasks". Change the option to match
   both documentation and the other timerlat tool, rtla-timerlat-top.
 
 - Extend coverage of runtime tests
 
   Cover both top and hist tools in all applicable test cases, add tests
   for a few uncovered options, and extend checks for some existing tests.
 
 - Add unit tests for actions
 
   rtla's actions feature is implemented in its source file and contains
   non-trivial parsing logic. Cover it with unit tests.
 
 - Stop record trace on interrupt
 
   Fix a bug where an interval exists after receiving a signal in which
   the main instance is stopped but the record instance is not, leading to
   discrepancies in reported results and sometimes rtla hanging.
 
 - Restore continue flag in actions_perform()
 
   Fix a bug where rtla always continues tracing after hitting a threshold
   even if the continue action was triggered just once, and add tests
   verifying that the flag is reset properly.
 
 - Migrate command line interface to libsubcmd
 
   Replace rtla's argument parsing using getopt_long() with libsubcmd, used
   by perf and objtool, to reuse existing code and auto-generate better
   help messages. Extensive unit tests are included to detect regressions.
 
 - Add -A/--aligned option to timerlat tools
 
   Add an option to align timerlat threads, based on the recently
   introduced TIMERLAT_ALIGN option of the timerlat tracer, together with
   unit tests and documentation.
 
 - Document tests in README
 
   Document how to run unit and runtime tests in rtla's README.txt,
   including the dependencies needed to run them.
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Merge tag 'trace-tools-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull RTLA tool updates from Steven Rostedt:

 - Fix discrepancy in --dump-tasks option

   Due to a mistake, rtla-timerlat-hist used the CLI syntax
   "--dump-task" instead of the documented "--dump-tasks". Change the
   option to match both documentation and the other timerlat tool,
   rtla-timerlat-top.

 - Extend coverage of runtime tests

   Cover both top and hist tools in all applicable test cases, add tests
   for a few uncovered options, and extend checks for some existing
   tests.

 - Add unit tests for actions

   rtla's actions feature is implemented in its source file and contains
   non-trivial parsing logic. Cover it with unit tests.

 - Stop record trace on interrupt

   Fix a bug where an interval exists after receiving a signal in which
   the main instance is stopped but the record instance is not, leading
   to discrepancies in reported results and sometimes rtla hanging.

 - Restore continue flag in actions_perform()

   Fix a bug where rtla always continues tracing after hitting a
   threshold even if the continue action was triggered just once, and
   add tests verifying that the flag is reset properly.

 - Migrate command line interface to libsubcmd

   Replace rtla's argument parsing using getopt_long() with libsubcmd,
   used by perf and objtool, to reuse existing code and auto-generate
   better help messages. Extensive unit tests are included to detect
   regressions.

 - Add -A/--aligned option to timerlat tools

   Add an option to align timerlat threads, based on the recently
   introduced TIMERLAT_ALIGN option of the timerlat tracer, together
   with unit tests and documentation.

 - Document tests in README

   Document how to run unit and runtime tests in rtla's README.txt,
   including the dependencies needed to run them.

* tag 'trace-tools-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (26 commits)
  rtla: Document tests in README
  Documentation/rtla: Add -A/--aligned option
  rtla/tests: Add unit tests for -A/--aligned option
  rtla/timerlat: Add -A/--aligned CLI option
  rtla/tests: Add unit tests for CLI option callbacks
  rtla/tests: Add unit tests for _parse_args() functions
  rtla: Parse cmdline using libsubcmd
  tools subcmd: allow parsing distinct --opt and --no-opt
  tools subcmd: support optarg as separate argument
  rtla: Add libsubcmd dependency
  rtla/tests: Add runtime tests for restoring continue flag
  rtla/tests: Run runtime tests in temporary directory
  rtla/tests: Add unit test for restoring continue flag
  rtla/actions: Restore continue flag in actions_perform()
  rtla: Stop the record trace on interrupt
  rtla/tests: Add unit tests for actions module
  rtla/tests: Add runtime tests for -C/--cgroup
  rtla/tests: Add runtime test for -k and -u options
  rtla/tests: Add runtime test for -H/--house-keeping
  rtla/tests: Cover all hist options in runtime tests
  ...
 2026-06-16 17:50:34 +05:30
Linus Torvalds
4f7e89065e Bootconfig updates for v7.2 
- bootconfig: Render kernel subtree as cmdline string at build time
   . bootconfig: move xbc_snprint_cmdline() to lib/bootconfig.c. Move the
     xbc_snprint_cmdline() function and its buffer from main.c to the shared
     lib/bootconfig.c parser library so it can be reused by userspace tools.
   . tools/bootconfig: render kernel.* subtree as cmdline string with -C. Add a
     new -C option to print the kernel.* subtree as a flat command-line string
     at build time, allowing early parameter injection without runtime parsing.
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Merge tag 'bootconfig-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull bootconfig updates from Masami Hiramatsu:

 - bootconfig: move xbc_snprint_cmdline() to lib/bootconfig.c

   Move the xbc_snprint_cmdline() function and its buffer from
   main.c to the shared lib/bootconfig.c parser library so it
   can be reused by userspace tools.

 - render kernel.* subtree as cmdline string with -C

   Add a new -C option to print the kernel.* subtree as a flat
   command-line string at build time, allowing early parameter
   injection without runtime parsing.

* tag 'bootconfig-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tools/bootconfig: render kernel.* subtree as cmdline string with -C
  bootconfig: move xbc_snprint_cmdline() to lib/bootconfig.c
 2026-06-16 17:29:24 +05:30
Linus Torvalds
8b308f9648 linux_kselftest-next-7.2-rc1 
Several fixes and improvements to resctrl test and a change to
 kselftest document to clarify the use of FORCE_TARGETS build
 variable.
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Merge tag 'linux_kselftest-next-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest updates from Shuah Khan:
 "Several fixes and improvements to resctrl tests and a change to
  kselftest document to clarify the use of FORCE_TARGETS build variable"

* tag 'linux_kselftest-next-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  kselftest: fix doc for ksft_test_result_report()
  selftests/resctrl: Reduce L2 impact on CAT test
  selftests/resctrl: Simplify perf usage in CAT test
  selftests/resctrl: Remove requirement on cache miss rate
  selftests/resctrl: Raise threshold at which MBM and PMU values are compared
  selftests/resctrl: Increase size of buffer used in MBM and MBA tests
  selftests/resctrl: Support multiple events associated with iMC
  selftests/resctrl: Prepare for parsing multiple events per iMC
  selftests/resctrl: Do not store iMC counter value in counter config structure
  selftests/resctrl: Reduce interference from L2 occupancy during cache occupancy test
  selftests/resctrl: Improve accuracy of cache occupancy test
  docs: kselftest: Document the FORCE_TARGETS build variable
 2026-06-16 16:49:07 +05:30
Linus Torvalds
42eb3a5ef6 linux_kselftest-kunit-7.2-rc1 
Fixes to tool and kunit core and new features to both to support
 JUnit XML (primitive) and backtrace suppression API:
 
  - bug/kunit: Core support for suppressing warning backtraces
  - kunit: tool: Parse and print the reason tests are skipped
  - kunit: tool: Add (primitive) support for outputting JUnit XML
  - kunit:tool: Don't write to stdout when it should be disabled
  - kunit: Add backtrace suppression self-tests
  - drm: Suppress intentional warning backtraces in scaling unit tests
  - kunit: Add documentation for warning backtrace suppression API
  - kunit: Fix spelling mistakes in comments and messages
  - gen_compile_commands: Ignore libgcc.a
  - kunit: qemu_configs: Add or1k / openrisc configuration
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Merge tag 'linux_kselftest-kunit-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kunit updates from Shuah Khan:
 "Fixes to tool and kunit core and new features to both to support JUnit
  XML (primitive) and backtrace suppression API:
   - Core support for suppressing warning backtraces
   - Parse and print the reason tests are skipped
   - Add (primitive) support for outputting JUnit XML
   - Don't write to stdout when it should be disabled
   - Add backtrace suppression self-tests
   - Suppress intentional warning backtraces in scaling unit tests
   - Add documentation for warning backtrace suppression API
   - Fix spelling mistakes in comments and messages
   - gen_compile_commands: Ignore libgcc.a
   - qemu_configs: Add or1k / openrisc configuration"

* tag 'linux_kselftest-kunit-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  kunit:tool: Don't write to stdout when it should be disabled
  kunit: tool: Add (primitive) support for outputting JUnit XML
  kunit: tool: Parse and print the reason tests are skipped
  kunit: Add documentation for warning backtrace suppression API
  drm: Suppress intentional warning backtraces in scaling unit tests
  kunit: Add backtrace suppression self-tests
  bug/kunit: Core support for suppressing warning backtraces
  kunit: Fix spelling mistakes in comments and messages
  kunit: qemu_configs: Add or1k / openrisc configuration
  gen_compile_commands: Ignore libgcc.a
 2026-06-16 16:33:57 +05:30
Linus Torvalds
481329ec5b hardening updates for v7.2-rc1 
- lkdtm: Add case to provoke a crash in EFI runtime services (Ard Biesheuvel)
 
 - lkdtm: add PPC_RADIX_TLBIEL test and missed isync (Sayali Patil)
 
 - stddef: Document designated initializer semantics for __TRAILING_OVERLAP()
   (Gustavo A. R. Silva)
 
 - strarray: drop redundant allocation, add __counted_by_ptr (Thorsten Blum)
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Merge tag 'hardening-v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening updates from Kees Cook:

 - lkdtm:
     - Add case to provoke a crash in EFI runtime services (Ard Biesheuvel)
     - add PPC_RADIX_TLBIEL test and missed isync (Sayali Patil)

 - stddef: Document designated initializer semantics for
   __TRAILING_OVERLAP() (Gustavo A. R. Silva)

 - strarray: drop redundant allocation, add __counted_by_ptr (Thorsten
   Blum)

* tag 'hardening-v7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  lkdtm/powerpc: add PPC_RADIX_TLBIEL test for radix MCE validation
  lkdtm/powerpc: add isync after slbmte to enforce SLB update ordering
  lkdtm: Add case to provoke a crash in EFI runtime services
  lib/string_helpers: annotate struct strarray with __counted_by_ptr
  lib/string_helpers: drop redundant allocation in kasprintf_strarray
  MAINTAINERS: add kernel hardening keyword __counted_by_ptr
  stddef: Document designated initializer semantics for __TRAILING_OVERLAP()
 2026-06-16 09:21:01 +05:30
Linus Torvalds
0d8c113493 This update includes the following changes: 
API:
 
 - Drop support for off-CPU cryptography in af_alg.
 - Document that af_alg is *always* slower.
 - Document the deprecation of af_alg.
 - Remove zero-copy support from skcipher and aead in af_alg.
 - Cap AEAD AD length to 0x80000000 in af_alg.
 - Free default RNG on module exit.
 
 Algorithms:
 
 - Fix vli multiplication carry overflow in ecc.
 - Drop unused cipher_null crypto_alg.
 - Remove unused variants of drbg.
 - Use lib/crypto in drbg.
 - Use memcpy_from/to_sglist in authencesn.
 - Allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode.
 - Disallow RSA PKCS#1 SHA-1 sig algs in FIPS mode.
 - Filter out async aead implementations at alloc in krb5.
 - Fix non-parallel fallback by rstoring callback in pcrypt.
 - Validate poly1305 template argument in chacha20poly1305.
 
 Drivers:
 
 - Add sysfs PCI reset support to qat.
 - Add KPT support for GEN6 devices to qat.
 - Remove unused character device and ioctls from qat.
 - Add support for hw access via SMCC to mtk.
 - Remove prng support from crypto4xx.
 - Remove prng support from hisi-trng.
 - Remove prng support from sun4i-ss.
 - Remove prng support from xilinx-trng.
 - Remove loongson-rng.
 - Remove exynos-rng.
 
 Others:
 
 - Remove support for AIO on sockets.
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Merge tag 'v7.2-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto updates from Herbert Xu:
 "API:
   - Drop support for off-CPU cryptography in af_alg
   - Document that af_alg is *always* slower
   - Document the deprecation of af_alg
   - Remove zero-copy support from skcipher and aead in af_alg
   - Cap AEAD AD length to 0x80000000 in af_alg
   - Free default RNG on module exit

  Algorithms:
   - Fix vli multiplication carry overflow in ecc
   - Drop unused cipher_null crypto_alg
   - Remove unused variants of drbg
   - Use lib/crypto in drbg
   - Use memcpy_from/to_sglist in authencesn
   - Allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode
   - Disallow RSA PKCS#1 SHA-1 sig algs in FIPS mode
   - Filter out async aead implementations at alloc in krb5
   - Fix non-parallel fallback by rstoring callback in pcrypt
   - Validate poly1305 template argument in chacha20poly1305

  Drivers:
   - Add sysfs PCI reset support to qat
   - Add KPT support for GEN6 devices to qat
   - Remove unused character device and ioctls from qat
   - Add support for hw access via SMCC to mtk
   - Remove prng support from crypto4xx
   - Remove prng support from hisi-trng
   - Remove prng support from sun4i-ss
   - Remove prng support from xilinx-trng
   - Remove loongson-rng
   - Remove exynos-rng

  Others:
   - Remove support for AIO on sockets"

* tag 'v7.2-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (196 commits)
  crypto: tegra - fix refcount leak in tegra_se_host1x_submit()
  crypto: rng - Free default RNG on module exit
  crypto: testmgr - allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode
  hwrng: jh7110 - fix refcount leak in starfive_trng_read()
  crypto: atmel-ecc - drop dead code in atmel_ecdh_max_size
  crypto: cavium/cpt - fix DMA cleanup using wrong loop index
  crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
  MAINTAINERS: make myself the maintainer of the Qualcomm QCE driver
  crypto: amcc - convert irq_of_parse_and_map to platform_get_irq
  crypto: sun4i-ss - Remove insecure and unused rng_alg
  hwrng: xilinx - Move xilinx-rng into drivers/char/hw_random/
  crypto: xilinx-trng - Replace crypto_drbg_ctr_df() with HMAC-SHA512
  crypto: xilinx-trng - Fix return value of xtrng_hwrng_trng_read()
  crypto: xilinx-trng - Remove crypto_rng interface
  crypto: exynos-rng - Remove exynos-rng driver
  hwrng: hisi-trng - Move hisi-trng into drivers/char/hw_random/
  crypto: hisi-trng - Remove crypto_rng interface
  crypto: loongson - Remove broken and unused loongson-rng
  crypto: crypto4xx - Remove insecure and unused rng_alg
  crypto: qat - validate RSA CRT component lengths
  ...
 2026-06-16 09:01:23 +05:30
Linus Torvalds
f8115f0e8a slab changes for 7.2 
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Merge tag 'slab-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab

Pull slab updates from Vlastimil Babka:

 - Support for "allocation tokens" (currently available in Clang 22+)
   for smarter partitioning of kmalloc caches based on the allocated
   object type, which can be enabled instead of the "random"
   per-caller-address-hash partitioning.

   It should be able to deterministically separate types containing a
   pointer from those that do not (Marco Elver)

 - Improvements and simplification of the kmem_cache_alloc_bulk() and
   mempool_alloc_bulk() API. This includes adaptation of callers
   (Christoph Hellwig)

 - Performance improvements and cleanups related mostly to sheaves
   refill (Hao Li, Shengming Hu, Vlastimil Babka)

 - Several fixups for the slabinfo tool (Xuewen Wang)

* tag 'slab-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
  mm/slab: do not limit zeroing to orig_size when only red zoning is enabled
  mm/slub: preserve original size in _kmalloc_nolock_noprof retry path
  mm: simplify the mempool_alloc_bulk API
  mm/slab: improve kmem_cache_alloc_bulk
  mm/slub: detach and reattach partial slabs in batch
  mm/slub: introduce helpers for node partial slab state
  mm/slub: use empty sheaf helpers for oversized sheaves
  tools/mm/slabinfo: remove redundant slab->partial assignment
  tools/mm/slabinfo: remove dead assignment in get_obj_and_str()
  tools/mm/slabinfo: Fix trace disable logic inversion
  MAINTAINERS: add slab-related scripts and tools to SLAB ALLOCATOR
  mm/slub: fix typo in sheaves comment
  mm, slab: simplify returning slab in __refill_objects_node()
  mm, slab: add an optimistic __slab_try_return_freelist()
  slab: fix kernel-docs for mm-api
  slab: improve KMALLOC_PARTITION_RANDOM randomness
  slab: support for compiler-assisted type-based slab cache partitioning
  mm/slub: defer freelist construction until after bulk allocation from a new slab
 2026-06-16 08:44:43 +05:30
Linus Torvalds
a87bbc4578 Things have calmed down a bit on the docs front, with no earthshaking 
changes this time around:
 
 - Ongoing work on the Japanese and Portuguese translations.
 
 - Better integration of the MAINTAINERS file into the rendered documents,
   including a search interface.
 
 - A seemingly infinite supply of fixes for typos, minor grammatical issues,
   and related problems that LLMs find with abandon.
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Merge tag 'docs-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/docs/linux

Pull documentation updates from Jonathan Corbet:
 "Things have calmed down a bit on the docs front, with no earthshaking
  changes this time around:

   - Ongoing work on the Japanese and Portuguese translations

   - Better integration of the MAINTAINERS file into the rendered
     documents, including a search interface

   - A seemingly infinite supply of fixes for typos, minor grammatical
     issues, and related problems that LLMs find with abandon"

* tag 'docs-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/docs/linux: (93 commits)
  docs: pt_BR: Translate 3.Early-stage.rst into Portuguese
  docs: pt_BR: update "Purpose of Defconfigs" section in maintainer-soc.rst
  Documentation: bug-hunting.rst: fix grammar
  docs/ja_JP: translate submitting-patches.rst (interleaved-replies)
  docs: Fix minor grammatical error
  docs/{it_it,sp_SP,zh_CN,zh_TW}: update references to removed CONFIG_DEBUG_SLAB
  Documentation: process: fix brackets
  Documentation: arch: fix brackets
  docs/dyndbg: explain flags parse 1st
  docs/dyndbg: update examples \012 to \n
  docs: kernel-parameters: Fix stale sticore file paths
  docs: real-time: Fix duplicated sched(7) text
  docs: kgdb: Fix stale source file paths
  docs: sonypi: Fix stale header file path
  docs: kernel-parameters: Remove sa1100ir IrDA parameter
  iommu: Documentation: rearrange, update kernel-parameters
  docs: md: fix grammar in speed_limit description
  docs: changes.rst: restore pahole 1.26 minimum (regressed by sort)
  Documentation: Fix syntax of kmalloc_objs example in coding style doc
  docs: pt_BR: update maintainer-handbooks
  ...
 2026-06-16 08:35:59 +05:30
Daniel Borkmann
74ac711839 selftests/net: Add hugepage kernel config dependency for zcrx 
test_iou_zcrx_large_buf in drivers/net/hw/nk_qlease.py runs iou-zcrx
with rx_buf_len > page size, backed by a hugepage-mapped area. Thus
add to the Kconfig.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Bobby Eshleman <bobbyeshleman@meta.com>
Link: https://patch.msgid.link/20260614102607.863838-5-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2026-06-15 18:58:01 -07:00
Daniel Borkmann
5024cfc8a3 selftests/net: Add netkit io_uring ZC test for large rx_buf_len 
Add test_iou_zcrx_large_buf, which runs iou-zcrx with rx_buf_len >
page size (-x 2) through a netkit-leased RX queue. The netkit ifindex
is opaque to io_uring, but rx_page_size is honoured by the leased
physical qops via netif_mp_open_rxq()'s lease redirect.

Originally, I also added a BIG TCP variant on top, but dropped it
here as fbnic (and the QEMU fbnic model) has no BIG TCP support
to exercise it as this point.

Tested against the QEMU fbnic emulation. The new test exercises
the > page rx_buf_len path only when the leased NIC advertises
QCFG_RX_PAGE_SIZE; otherwise it skips.

For fbnic, I used Bjorn's patches locally [0]:

  # ./nk_qlease.py
  TAP version 13
  1..5
  ok 1 nk_qlease.test_iou_zcrx
  ok 2 nk_qlease.test_iou_zcrx_large_buf
  ok 3 nk_qlease.test_attrs
  ok 4 nk_qlease.test_attach_xdp_with_mp
  ok 5 nk_qlease.test_destroy
  # Totals: pass:5 fail:0 xfail:0 xpass:0 skip:0 error:0

Without those patches (aka not advertising QCFG_RX_PAGE_SIZE):

  # ./nk_qlease.py
  TAP version 13
  1..5
  ok 1 nk_qlease.test_iou_zcrx
  ok 2 nk_qlease.test_iou_zcrx_large_buf # SKIP Large chunks are not supported -95
  ok 3 nk_qlease.test_attrs
  ok 4 nk_qlease.test_attach_xdp_with_mp
  ok 5 nk_qlease.test_destroy
  # Totals: pass:4 fail:0 xfail:0 xpass:0 skip:1 error:0

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Bobby Eshleman <bobbyeshleman@meta.com>
Link: https://lore.kernel.org/netdev/20260522113225.241337-1-bjorn@kernel.org/ [0]
Link: https://patch.msgid.link/20260614102607.863838-4-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2026-06-15 18:58:01 -07:00
Daniel Borkmann
96fda937b4 selftests/net: Use public NetDrvContEnv API in nk_qlease fixtures 
Expose the netkit host ifname as a public attribute nk_host_ifname
(symmetric with the already-public nk_guest_ifname), rename _attach_bpf
to a public attach_bpf, and add a public detach_bpf helper that
encapsulates the tc-filter teardown bookkeeping. Switch the fixtures
to this public API. No functional change and keeps pylint happy.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Bobby Eshleman <bobbyeshleman@meta.com>
Link: https://patch.msgid.link/20260614102607.863838-3-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2026-06-15 18:58:01 -07:00
Daniel Borkmann
bc5c25c8f6 selftests/net: Move netkit lease hw setup into per-test fixtures 
The HW counterpart of nk_qlease.py was carrying its lease setup in main()
and stashing src_queue / nk_queue / nk_*_ifname on cfg, which had drawbacks
called out during the review at [0].

This is the deferred half of the cleanup that landed in commit e254ffb950
("selftests/net: Split netdevsim tests from HW tests in nk_qlease") which
was the SW counterpart of nk_qlease.py.

While at it, convert the open-coded "ip netns exec" prefixes in the test
bodies over to the ns= argument of cmd() / bkg().

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Bobby Eshleman <bobbyeshleman@meta.com>
Link: https://lore.kernel.org/netdev/20260408162238.16709090@kernel.org/ [0]
Link: https://patch.msgid.link/20260614102607.863838-2-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2026-06-15 18:58:00 -07:00
Linus Torvalds
80476f22b8 arm64 updates for 7.2 
CPU errata handling:
 - Extend CnP disabling workaround to HiSilicon HIP09 hardware.
 - Work around eternally broken broadcast TLB invalidation on more CPUs.
 - Documentation and code cleanups.
 
 CPU features:
 - Add new hwcaps for the 2025 dpISA extensions.
 
 Floating point / SVE / SME:
 - Significant cleanup to the low-level state management code in the core
   architecture code and KVM.
 - Use correct register widths during SVE/SME save/restore assembly.
 - Expose SVE/SME save/restore memory accesses to sanitisers.
 
 Memory management:
 - Preparatory work for unmapping the kernel data and bss sections from
   the linear map.
 
 Miscellaneous:
 - Inline DAIF manipulation helpers so they can be used safely from
   non-instrumentable code.
 - Fix handling of the 'nosmp' cmdline option to avoid marking secondary
   cores as "possible".
 
 MPAM:
 - Add support for v0.1 of the MPAM architecture.
 
 Perf:
 - Update HiSilicon PMU MAINTAINERS entry.
 - Fix event encodings for the DVM node in the CMN driver.
 
 Selftests:
 - Extend sigframe tests to cover POE context.
 - Add coverage for the newly added 2025 dpISA hwcaps.
 
 System registers:
 - Add new registers and ESR encodings for the HDBSS feature.
 
 Plus minor fixes and cleanups across the board.
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Merge tag 'arm64-upstream' of gitolite.kernel.org:pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Will Deacon:
 "It feels like the new world of AI tooling has slowed us down a little
  on the feature side when compared to the fixes side. The extra rounds
  of Sashiko review have also pushed a few things out until next time.

  Still, there's some good foundational stuff here for the fpsimd code
  and hardening work towards removing the predictable linear alias of
  the kernel image.

  CPU errata handling:
   - Extend CnP disabling workaround to HiSilicon HIP09 hardware.
   - Work around eternally broken broadcast TLB invalidation on more
     CPUs.
   - Documentation and code cleanups.

  CPU features:
   - Add new hwcaps for the 2025 dpISA extensions.

  Floating point / SVE / SME:
   - Significant cleanup to the low-level state management code in the
     core architecture code and KVM.
   - Use correct register widths during SVE/SME save/restore assembly.
   - Expose SVE/SME save/restore memory accesses to sanitisers.

  Memory management:
   - Preparatory work for unmapping the kernel data and bss sections
     from the linear map.

  Miscellaneous:
   - Inline DAIF manipulation helpers so they can be used safely from
     non-instrumentable code.
   - Fix handling of the 'nosmp' cmdline option to avoid marking
     secondary cores as "possible".

  MPAM:
   - Add support for v0.1 of the MPAM architecture.

  Perf:
   - Update HiSilicon PMU MAINTAINERS entry.
   - Fix event encodings for the DVM node in the CMN driver.

  Selftests:
   - Extend sigframe tests to cover POE context.
   - Add coverage for the newly added 2025 dpISA hwcaps.

  System registers:
   - Add new registers and ESR encodings for the HDBSS feature.

  Plus minor fixes and cleanups across the board"

* tag 'arm64-upstream' of gitolite.kernel.org:pub/scm/linux/kernel/git/arm64/linux: (73 commits)
  arm64: errata: Mitigate TLBI errata on Microsoft Azure Cobalt 100 CPU
  arm64: errata: Mitigate TLBI errata on NVIDIA Olympus CPU
  arm64: errata: Mitigate TLBI errata on various Arm CPUs
  arm64: cputype: Add C1-Premium definitions
  arm64: cputype: Add C1-Ultra definitions
  Revert "arm64: mm: Unmap kernel data/bss entirely from the linear map"
  Revert "arm64: mm: Defer remap of linear alias of data/bss"
  arm64: arch_timer: reuse arch_timer_read_cnt{p,v}ct_el0() helpers
  arm64/mm: Rename ptdesc_t
  arm64: mm: Defer remap of linear alias of data/bss
  KVM: arm64: Omit tag sync on stage-2 mappings of the zero page
  arm64: Avoid double evaluation of __ptep_get()
  kasan: Move generic KASAN page tables out of BSS too
  arm64: Rename page table BSS section to .bss..pgtbl
  arm64: patching: replace min_t with min in __text_poke
  perf/arm-cmn: Fix DVM node events
  arm64: fpsimd: Remove <asm/fpsimdmacros.h>
  arm64: fpsimd: Move SME save/restore inline
  arm64: fpsimd: Move sve_flush_live() inline
  arm64: fpsimd: Move SVE save/restore inline
  ...
 2026-06-16 05:18:04 +05:30
Neil Spring
ae57a55332 selftests: net: add local ECMP rehash test 
Add ecmp_rehash.sh with nine scenarios verifying that TCP rehash
selects a different local ECMP path for IPv6:

  - SYN retransmission (forward path blocked during setup)
  - SYN/ACK retransmission (reverse path blocked during setup)
  - Midstream RTO (forward path blocked on established connection)
  - Midstream ACK rehash (reverse path blocked on established connection)
  - PLB rehash (ECN-driven congestion on established connection)
  - Hash policy 1 negative test (rehash attempted but path unchanged)
  - No flowlabel leak (client mp_hash does not alter on-wire flowlabel)
  - Dst rebuild consistency (dst invalidation does not change path)
  - Syncookie server path consistency (SYN-ACK and post-cookie ACKs
    use the same ECMP path)

The policy 1 test verifies that fib_multipath_hash_policy=1 computes
a deterministic 5-tuple hash, so txhash re-rolls do not change the
ECMP path while TcpTimeoutRehash still increments.

The flowlabel leak test sets auto_flowlabels=0 on the client and
installs tc filters on client egress that drop TCP packets with
nonzero flowlabel, confirming that the client's fl6->mp_hash does
not leak into the on-wire IPv6 flow label.

The PLB test needs DCTCP, a restricted congestion control.  Rather
than relax the host-global tcp_allowed_congestion_control (no
per-netns equivalent), it pins dctcp on the test routes via the
congctl route attribute, confined to the test namespaces.

The dst rebuild test streams data, invalidates the cached dst by
adding and removing a dummy route (bumping the fib6_node sernum),
and verifies that traffic stays on the same path.  The sernum change
causes ip6_dst_check() to fail on the next transmit, triggering a
fresh route lookup via inet6_csk_route_socket().
ECMP_REBUILD_ROUNDS=10 repeats the check to reduce the probability
of a buggy kernel passing by chance with 2-way ECMP.

The syncookie server path consistency test verifies that the
server's SYN-ACK and subsequent ACKs use the same ECMP path.
With syncookies, the request socket is freed after the SYN-ACK,
so cookie_tcp_reqsk_init() must derive the same txhash (from the
cookie) that was used for the SYN-ACK's route lookup.

The syncookie test forces tcp_syncookies=2; it skips when
CONFIG_SYN_COOKIES is not available.  selftests/net/config selects
it (and CONFIG_TCP_CONG_DCTCP for the PLB test).

Signed-off-by: Neil Spring <ntspring@meta.com>
Link: https://patch.msgid.link/20260615042158.1600746-3-ntspring@meta.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2026-06-15 15:58:13 -07:00
Minxi Hou
3b165c2a29 selftests/net/openvswitch: add SET action test 
Add test_action_set exercising OVS_ACTION_ATTR_SET with an ipv4 dst
rewrite. The test verifies the SET action in three steps: first
confirm normal forwarding, then apply set(ipv4(dst=10.0.0.99)) to
rewrite the destination to an address nobody owns and verify ping
fails, then restore normal forwarding and verify connectivity
recovers.

Signed-off-by: Minxi Hou <houminxi@gmail.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
Link: https://patch.msgid.link/20260612130503.311240-1-houminxi@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2026-06-15 14:16:06 -07:00
Dragos Tatulea
18f65355e1 io_uring/zcrx: selftests: verify rx_buf_len for large chunks 
Check the newly added rx_buf_len page_pool field for io_uring
in the existing large-chunks test after the receiver is up.

Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Link: https://patch.msgid.link/20260612211709.1456966-4-dtatulea@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2026-06-15 12:58:18 -07:00
Dragos Tatulea
5c4adb7fb4 netdev: expose io_uring rx_page_order order via netlink 
This adds observability for the io_uring zcrx rx-buf-len configuration.

Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Yael Chemla <ychemla@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Acked-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://patch.msgid.link/20260612211709.1456966-3-dtatulea@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2026-06-15 12:58:18 -07:00
Bobby Eshleman
9361bff6bd selftests/vsock: skip vng setsid workaround on >= 1.41 
virtme-ng 1.41 ships the upstream fix for the SIGTTOU hang
(https://github.com/arighi/virtme-ng/pull/453), so the setsid wrapper in
vng_dry_run() is no longer needed there. Gate the workaround on the vng
version: setsid is used for vng < 1.41, and vng is invoked directly on
>= 1.41.

Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com>
Link: https://patch.msgid.link/20260612-vsock-test-update-v1-2-7d7eeed3ac8f@meta.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2026-06-15 12:52:01 -07:00
Bobby Eshleman
197503d5ac selftests/vsock: accept vng 1.33 or >= 1.36 
The current vng version check uses a discrete allowlist of "1.33",
"1.36", and "1.37", which forces a script update on every new release
even though all post-1.36 releases work.

Replace the discrete list with: "1.33", or any version >= 1.36. 1.34
and 1.35 are skipped because they were not tested. Add a version_lt()
helper that compares MAJOR.MINOR numerically, so the check reads as a
straightforward version comparison.

Signed-off-by: Bobby Eshleman <bobbyeshleman@meta.com>
Link: https://patch.msgid.link/20260612-vsock-test-update-v1-1-7d7eeed3ac8f@meta.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2026-06-15 12:52:01 -07:00
Linus Torvalds
ff5ccdb8d5 x86/cpu updates for v7.2: 
- CPUID API updates (Ahmed S. Darwish):
 
    - Introduce a centralized CPUID parser
    - Introduce a centralized CPUID data model
    - Introduce <asm/cpuid/leaf_types.h>
    - Rename cpuid_leaf()/cpuid_subleaf() APIs
    - treewide: Explicitly include the x86 CPUID headers
 
  - Update to x86-cpuid-db v3.1 (Maciej Wieczor-Retman)
 
  - Continued removal of pre-i586 support and related
    simplifications (Ingo Molnar)
 
  - Add Intel CPU model number for rugged Panther Lake
    (Tony Luck)
 
  - Misc fixes, updates and cleanups by Arnd Bergmann, Chao Gao,
    Lukas Bulwahn, Sohil Mehta, Maciej Wieczor-Retman.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-cpu-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip

Pull x86 cpuid updates from Ingo Molnar:

 - CPUID API updates (Ahmed S. Darwish):
    - Introduce a centralized CPUID parser
    - Introduce a centralized CPUID data model
    - Introduce <asm/cpuid/leaf_types.h>
    - Rename cpuid_leaf()/cpuid_subleaf() APIs
    - treewide: Explicitly include the x86 CPUID headers

 - Update to x86-cpuid-db v3.1 (Maciej Wieczor-Retman)

 - Continued removal of pre-i586 support and related simplifications
   (Ingo Molnar)

 - Add Intel CPU model number for rugged Panther Lake (Tony Luck)

 - Misc fixes, updates and cleanups by Arnd Bergmann, Chao Gao, Lukas
   Bulwahn, Sohil Mehta, Maciej Wieczor-Retman.

* tag 'x86-cpu-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (25 commits)
  x86/cpu: Make CONFIG_X86_CX8 unconditional
  x86/cpu: Remove unused !CONFIG_X86_TSC code
  x86/cpuid: Update bitfields to x86-cpuid-db v3.1
  tools/x86/kcpuid: Update bitfields to x86-cpuid-db v3.1
  x86/cpu: Make CONFIG_X86_TSC unconditional
  MAINTAINERS: Drop obsolete FPU EMULATOR section
  x86/cpu: Fix a F00F bug warning and clean up surrounding code
  x86/cpu: Add Intel CPU model number for rugged Panther Lake
  x86/cpuid: Introduce a centralized CPUID parser
  x86/cpu: Introduce a centralized CPUID data model
  x86/cpuid: Introduce <asm/cpuid/leaf_types.h>
  x86/cpuid: Rename cpuid_leaf()/cpuid_subleaf() APIs
  x86/cpu: Do not include the CPUID API header in asm/processor.h
  Documentation: core-api/cpu_hotplug: Remove stale cpu0_hotplug docs
  x86/cpu, cpufreq: Remove AMD ELAN support
  x86/fpu: Remove the math-emu/ FPU emulation library
  x86/fpu: Remove the 'no387' boot option
  x86/fpu: Remove MATH_EMULATION and related glue code
  treewide: Explicitly include the x86 CPUID headers
  x86/cpu: Remove the CONFIG_X86_INVD_BUG quirk
  ...
 2026-06-15 15:25:17 +05:30
Linus Torvalds
2cbf335f8c Scheduler updates for v7.2: 
SMP load-balancing updates:
 
  - A large series to introduce infrastructure for cache-aware load
    balancing, with the goal of co-locating tasks that share data
    within the same Last Level Cache (LLC) domain. By improving cache
    locality, the scheduler can reduce cache bouncing and cache misses,
    ultimately improving data access efficiency.
 
    Implemented by Chen Yu and Tim Chen, based on early prototype work
    by Peter Zijlstra, with fixes by Jianyong Wu, Peter Zijlstra and
    Shrikanth Hegde.
 
  - A series to simplify CONFIG_SCHED_SMT ifdef usage (Shrikanth Hegde)
 
 Fair scheduler updates:
 
  - A series to improve SD_ASYM_CPUCAPACITY scheduling by introducing
    SMT awareness (Andrea Righi, K Prateek Nayak)
 
  - A series to optimize cfs_rq and sched_entity allocation for
    better data locality (Zecheng Li)
 
  - A preparatory series to change fair/cgroup scheduling to a single
    runqueue, without the final change (Peter Zijlstra)
 
  - Auto-manage ext/fair dl_server bandwidth (Andrea Righi)
 
  - Fix cpu_util runnable_avg arithmetic (Hongyan Xia)
 
  - Optimize update_tg_load_avg()'s rate-limiting code
    (Rik van Riel)
 
  - Allow account_cfs_rq_runtime() to throttle current hierarchy
    (K Prateek Nayak)
 
  - Update util_est after updating util_avg during dequeue, to fix
    the util signal update logic, which reduces signal noise
    (Vincent Guittot)
 
 Scheduler topology updates:
 
  - Allow multiple domains to claim sched_domain_shared (K Prateek Nayak)
 
  - Add parameter to split LLC (Peter Zijlstra)
 
 Core scheduler updates:
 
  - Use trace_call__<tp>() to save a static branch (Gabriele Monaco)
 
 Scheduler statistics updates:
 
  - Drop now-stale mul_u64_u64_div_u64() cputime over-approximation guard
    (Nicolas Pitre)
 
 Deadline scheduler updates:
 
  - Reject debugfs dl_server writes for offline CPUs (Andrea Righi)
 
  - Fix replenishment logic for non-deferred servers
    (Yuri Andriaccio)
 
 RT scheduling updates:
 
  - Turn RT_PUSH_IPI default off for non PREEMPT_RT (Steven Rostedt)
 
  - Update default bandwidth for real-time tasks to 1.0
    (Yuri Andriaccio)
 
 Proxy scheduling updates:
 
  - A series to implement Optimized Donor Migration for Proxy Execution
    (John Stultz, Peter Zijlstra)
 
  - Various proxy scheduling cleanups and fixes
    (Peter Zijlstra, K Prateek Nayak)
 
 Misc fixes, improvements and cleanups by Aaron Lu, Andrea Righi,
 Zenghui Yu, Chen Yu, Guanyou.Chen, John Stultz, Shrikanth Hegde,
 Peter Zijlstra, Liang Luo and Yiyang Chen.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip

Pull scheduler updates from Ingo Molnar:
 "SMP load-balancing updates:

   - A large series to introduce infrastructure for cache-aware load
     balancing, with the goal of co-locating tasks that share data
     within the same Last Level Cache (LLC) domain. By improving cache
     locality, the scheduler can reduce cache bouncing and cache misses,
     ultimately improving data access efficiency.

     Implemented by Chen Yu and Tim Chen, based on early prototype work
     by Peter Zijlstra, with fixes by Jianyong Wu, Peter Zijlstra and
     Shrikanth Hegde.

   - A series to simplify CONFIG_SCHED_SMT ifdef usage (Shrikanth Hegde)

  Fair scheduler updates:

   - A series to improve SD_ASYM_CPUCAPACITY scheduling by introducing
     SMT awareness (Andrea Righi, K Prateek Nayak)

   - A series to optimize cfs_rq and sched_entity allocation for better
     data locality (Zecheng Li)

   - A preparatory series to change fair/cgroup scheduling to a single
     runqueue, without the final change (Peter Zijlstra)

   - Auto-manage ext/fair dl_server bandwidth (Andrea Righi)

   - Fix cpu_util runnable_avg arithmetic (Hongyan Xia)

   - Optimize update_tg_load_avg()'s rate-limiting code (Rik van Riel)

   - Allow account_cfs_rq_runtime() to throttle current hierarchy
     (K Prateek Nayak)

   - Update util_est after updating util_avg during dequeue, to fix the
     util signal update logic, which reduces signal noise (Vincent
     Guittot)

  Scheduler topology updates:

   - Allow multiple domains to claim sched_domain_shared (K Prateek
     Nayak)

   - Add parameter to split LLC (Peter Zijlstra)

  Core scheduler updates:

   - Use trace_call__<tp>() to save a static branch (Gabriele Monaco)

  Scheduler statistics updates:

   - Drop now-stale mul_u64_u64_div_u64() cputime over-approximation
     guard (Nicolas Pitre)

  Deadline scheduler updates:

   - Reject debugfs dl_server writes for offline CPUs (Andrea Righi)

   - Fix replenishment logic for non-deferred servers (Yuri Andriaccio)

  RT scheduling updates:

   - Turn RT_PUSH_IPI default off for non PREEMPT_RT (Steven Rostedt)

   - Update default bandwidth for real-time tasks to 1.0 (Yuri
     Andriaccio)

  Proxy scheduling updates:

   - A series to implement Optimized Donor Migration for Proxy Execution
     (John Stultz, Peter Zijlstra)

   - Various proxy scheduling cleanups and fixes (Peter Zijlstra,
     K Prateek Nayak)

  Misc fixes, improvements and cleanups by Aaron Lu, Andrea Righi,
  Zenghui Yu, Chen Yu, Guanyou.Chen, John Stultz, Shrikanth Hegde,
  Peter Zijlstra, Liang Luo and Yiyang Chen"

* tag 'sched-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (91 commits)
  sched/fair: Fix newidle vs core-sched
  sched/deadline: Use task_on_rq_migrating() helper
  sched/core: Combine separate 'else' and 'if' statements
  sched/fair: Fix cpu_util runnable_avg arithmetic
  sched/fair: Unify cfs_rq throttling via account_cfs_rq_runtime()
  sched/fair: Move the throttled tasks to a local list in tg_unthrottle_up()
  sched/fair: Call update_curr() before unthrottling the hierarchy
  sched/fair: Use throttled_csd_list for local unthrottle
  sched/fair: Convert cfs bandwidth throttling to use guards
  sched/fair: Allocate cfs_tg_state with percpu allocator
  sched/fair: Remove task_group->se pointer array
  sched/fair: Co-locate cfs_rq and sched_entity in cfs_tg_state
  sched: restore timer_slack_ns when resetting RT policy on fork
  MAINTAINERS: Fix spelling mistake in Peter's name
  sched: Simplify ttwu_runnable()
  sched/proxy: Remove superfluous clear_task_blocked_in()
  sched/proxy: Remove PROXY_WAKING
  sched/proxy: Switch proxy to use p->is_blocked
  sched/proxy: Only return migrate when needed
  sched: Be more strict about p->is_blocked
  ...
 2026-06-15 14:50:18 +05:30
Linus Torvalds
d8d706a274 Objtool updates for v7.2: 
- A large series of KLP fixes and improvements, in preparation of
    the arm64 port (Josh Poimboeuf)
 
  - Fix a number of bugs and issues on specific distro, LTO,
    FineIBT and kCFI configs (Josh Poimboeuf)
 
  - Misc other fixes by Josh Poimboeuf and Joe Lawrence.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip

Pull objtool updates from Ingo Molnar:

 - A large series of KLP fixes and improvements, in preparation of the
   arm64 port (Josh Poimboeuf)

 - Fix a number of bugs and issues on specific distro, LTO, FineIBT and
   kCFI configs (Josh Poimboeuf)

 - Misc other fixes by Josh Poimboeuf and Joe Lawrence

* tag 'objtool-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (53 commits)
  objtool/klp: Cache dont_correlate() result
  objtool: Improve and simplify prefix symbol detection
  objtool/klp: Fix kCFI prefix finding/cloning
  objtool: Grow __cfi_* prefix symbols for all CFI+CALL_PADDING
  objtool/klp: Fix position-dependent checksums for non-relocated jumps/calls
  objtool: Add insn_sym() helper
  objtool/klp: Add correlation debugging output
  objtool/klp: Rewrite symbol correlation algorithm
  objtool/klp: Calculate object checksums
  klp-build: Validate short-circuit prerequisites
  objtool/klp: Remove "objtool --checksum"
  klp-build: Use "objtool klp checksum" subcommand
  objtool/klp: Add "objtool klp checksum" subcommand
  objtool: Consolidate file decoding into decode_file()
  objtool/klp: Extricate checksum calculation from validate_branch()
  objtool: Add is_cold_func() helper
  objtool: Add is_alias_sym() helper
  objtool/klp: Handle Clang .data..Lanon anonymous data sections
  objtool/klp: Create empty checksum sections for function-less object files
  objtool: Include libsubcmd headers directly from source tree
  ...
 2026-06-15 14:31:58 +05:30
Linus Torvalds
764e77d868 Locking updates for v7.2: 
Futex updates:
 
  - Optimize futex hash bucket access patterns (Peter Zijlstra)
 
  - Large series to address the robust futex unlock race for real,
    by Thomas Gleixner:
 
     "The robust futex unlock mechanism is racy in respect
      to the clearing of the robust_list_head::list_op_pending
      pointer because unlock and clearing the pointer are not
      atomic. The race window is between the unlock and clearing the
      pending op pointer. If the task is forced to exit in this
      window, exit will access a potentially invalid pending op
      pointer when cleaning up the robust list. That happens if
      another task manages to unmap the object containing the lock
      before the cleanup, which results in an UAF. In the worst case
      this UAF can lead to memory corruption when unrelated content
      has been mapped to the same address by the time the access
      happens.
 
      User space can't solve this problem without help from the kernel.
      This series provides the kernel side infrastructure to help it
      along:
 
       1) Combined unlock, pointer clearing, wake-up for the
          contended case
 
       2) VDSO based unlock and pointer clearing helpers with a
          fix-up function in the kernel when user space was interrupted
          within the critical section.
 
     ... with help by André Almeida:
 
      - Add a note about robust list race condition (André Almeida)
      - Add self-tests for robust release operations (André Almeida)
 
 Context analysis updates:
 
  - Implement context analysis for 'struct rt_mutex'.
    (Bart Van Assche)
  - Bump required Clang version to 23 (Marco Elver)
 
 Guard infrastructure updates:
 
  - Series to remove NULL check from unconditional guards
    (Dmitry Ilvokhin)
 
 Lockdep updates:
 
  - Restore self-test migrate_disable() and sched_rt_mutex
    state on PREEMPT_RT (Karl Mehltretter)
 
 Membarriers updates:
 
  - Use per-CPU mutexes for targeted commands (Aniket Gattani)
  - Modernize membarrier_global_expedited with cleanup guards
    (Aniket Gattani)
  - Add rseq stress test for CFS throttle interactions (Aniket Gattani)
 
 percpu-rwsems updates:
 
  - Extract __percpu_up_read() to optimize inlining overhead
    (Dmitry Ilvokhin)
 
 Seqlocks updates:
 
  - Allow UBSAN_ALIGNMENT to fail optimizing (Heiko Carstens)
 
 Lock tracing:
 
  - Add contended_release tracepoint to sleepable locks
    such as mutexes, percpu-rwsems, rtmutexes, rwsems
    and semaphores. (Dmitry Ilvokhin)
 
 MAINTAINERS updates:
 
  - MAINTAINERS: Add RUST [SYNC] entry (Boqun Feng)
 
 Misc updates and fixes by Randy Dunlap, YE WEI-HONG,
 Fabricio Parra, Dmitry Ilvokhin and Peter Zijlstra.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip

Pull locking updates from Ingo Molnar:
 "Futex updates:

   - Optimize futex hash bucket access patterns (Peter Zijlstra)

   - Large series to address the robust futex unlock race for real, by
     Thomas Gleixner:

      "The robust futex unlock mechanism is racy in respect to the
       clearing of the robust_list_head::list_op_pending pointer because
       unlock and clearing the pointer are not atomic.

       The race window is between the unlock and clearing the pending op
       pointer. If the task is forced to exit in this window, exit will
       access a potentially invalid pending op pointer when cleaning up
       the robust list.

       That happens if another task manages to unmap the object
       containing the lock before the cleanup, which results in an UAF.

       In the worst case this UAF can lead to memory corruption when
       unrelated content has been mapped to the same address by the time
       the access happens.

       User space can't solve this problem without help from the kernel.
       This series provides the kernel side infrastructure to help it
       along:

        1) Combined unlock, pointer clearing, wake-up for the
           contended case

        2) VDSO based unlock and pointer clearing helpers with a
           fix-up function in the kernel when user space was interrupted
           within the critical section.

      ... with help by André Almeida:

        - Add a note about robust list race condition (André Almeida)
        - Add self-tests for robust release operations (André Almeida)

  Context analysis updates:

   - Implement context analysis for 'struct rt_mutex'. (Bart Van Assche)
   - Bump required Clang version to 23 (Marco Elver)

  Guard infrastructure updates:

   - Series to remove NULL check from unconditional guards (Dmitry
     Ilvokhin)

  Lockdep updates:

   - Restore self-test migrate_disable() and sched_rt_mutex state on
     PREEMPT_RT (Karl Mehltretter)

  Membarriers updates:

   - Use per-CPU mutexes for targeted commands (Aniket Gattani)
   - Modernize membarrier_global_expedited with cleanup guards (Aniket
     Gattani)
   - Add rseq stress test for CFS throttle interactions (Aniket Gattani)

  percpu-rwsems updates:

   - Extract __percpu_up_read() to optimize inlining overhead (Dmitry
     Ilvokhin)

  Seqlocks updates:

   - Allow UBSAN_ALIGNMENT to fail optimizing (Heiko Carstens)

  Lock tracing:

   - Add contended_release tracepoint to sleepable locks such as
     mutexes, percpu-rwsems, rtmutexes, rwsems and semaphores (Dmitry
     Ilvokhin)

  MAINTAINERS updates:

   - MAINTAINERS: Add RUST [SYNC] entry (Boqun Feng)

  Misc updates and fixes by Randy Dunlap, YE WEI-HONG, Fabricio Parra,
  Dmitry Ilvokhin and Peter Zijlstra"

* tag 'locking-core-2026-06-14' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (36 commits)
  locking: Add contended_release tracepoint to sleepable locks
  locking/percpu-rwsem: Extract __percpu_up_read()
  tracing/lock: Remove unnecessary linux/sched.h include
  futex: Optimize futex hash bucket access patterns
  rust: sync: completion: Mark inline complete_all and wait_for_completion
  MAINTAINERS: Add RUST [SYNC] entry
  cleanup: Specify nonnull argument index
  selftests: futex: Add tests for robust release operations
  Documentation: futex: Add a note about robust list race condition
  x86/vdso: Implement __vdso_futex_robust_try_unlock()
  x86/vdso: Prepare for robust futex unlock support
  futex: Provide infrastructure to plug the non contended robust futex unlock race
  futex: Add robust futex unlock IP range
  futex: Add support for unlocking robust futexes
  futex: Cleanup UAPI defines
  x86: Select ARCH_MEMORY_ORDER_TSO
  uaccess: Provide unsafe_atomic_store_release_user()
  futex: Provide UABI defines for robust list entry modifiers
  futex: Move futex related mm_struct data into a struct
  futex: Make futex_mm_init() void
  ...
 2026-06-15 14:21:14 +05:30
Linus Torvalds
a60ce761d9 Updates for the time/timer core subsystem: 
- Harden the user space controllable hrtimer interfaces further to
     protect against unpriviledged DoS attempts by arming timers in the past.
 
   - Add per-capacity hierarchies to the timer migration code to prevent
     timer migration accross different capacity domains. This code has been
     disabled last minute as there is a pathological problem with SoCs which
     advertise a larger number of capacity domains. The problem is under
     investigation and the code won't be active before v7.3, but that turned
     out to be less intrusive than a full revert as it preserves the
     preparatory steps and allows people to work on the final resolution
 
   - Export time namespace functionality as a recent user can be built as a
     module.
 
   - Initialize the jiffies clocksource before using it. The recent
     hardening against time moving backward requires that the related
     members of struct clocksource have been initialized, otherwise it
     clamps the readout to 0, which makes time stand sill and causes boot
     delays.
 
   - Fix a more than twenty year old PID reference count leak in an error
     path of the POSIX CPU timer code.
 
   - The usual small fixes, improvements and cleanups all over the place.
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Merge tag 'timers-core-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip

Pull timer core updates from Thomas Gleixner:
 "Updates for the time/timer core subsystem:

   - Harden the user space controllable hrtimer interfaces further to
     protect against unpriviledged DoS attempts by arming timers in the
     past.

   - Add per-capacity hierarchies to the timer migration code to prevent
     timer migration accross different capacity domains. This code has
     been disabled last minute as there is a pathological problem with
     SoCs which advertise a larger number of capacity domains. The
     problem is under investigation and the code won't be active before
     v7.3, but that turned out to be less intrusive than a full revert
     as it preserves the preparatory steps and allows people to work on
     the final resolution

   - Export time namespace functionality as a recent user can be built
     as a module.

   - Initialize the jiffies clocksource before using it. The recent
     hardening against time moving backward requires that the related
     members of struct clocksource have been initialized, otherwise it
     clamps the readout to 0, which makes time stand sill and causes
     boot delays.

   - Fix a more than twenty year old PID reference count leak in an
     error path of the POSIX CPU timer code.

   - The usual small fixes, improvements and cleanups all over the
     place"

* tag 'timers-core-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip: (31 commits)
  posix-cpu-timers: Fix pid refcount leak in do_cpu_nanosleep() error path
  time/jiffies: Register jiffies clocksource before usage
  timers/migration: Temporarily disable per capacity hierarchies
  timers/migration: Turn tmigr_hierarchy level_list into a flexible array
  timers/migration: Deactivate per-capacity hierarchies under nohz_full
  timers/migration: Fix hotplug migrator selection target on asymetric capacity machines
  ntsync: Honour caller's time namespace for absolute MONOTONIC timeouts
  time/namespace: Export init_time_ns and do_timens_ktime_to_host()
  timers/migration: Update stale @online doc to @available
  timers: Fix flseep() typo in kernel-doc comment
  hrtimer: Fix the bogus return type of __hrtimer_start_range_ns()
  hrtimer: Return ktime_t from hrtimer_get_next_event()/hrtimer_next_event_without()
  clocksource: Clean up clocksource_update_freq() functions
  alarmtimer: Remove stale return description from alarm_handle_timer()
  selftests/posix_timers: Use CLOCK_THREAD_CPUTIME_ID for ITIMER_PROF measurements
  scripts/timers: Add timer_migration_tree.py
  timers/migration: Handle capacity in connect tracepoints
  timers/migration: Split per-capacity hierarchies
  timers/migration: Track CPUs in a hierarchy
  timers/migration: Abstract out hierarchy to prepare for CPU capacity awareness
  ...
 2026-06-15 13:39:12 +05:30
Linus Torvalds
a04c8472b0 A trivial update for RSEQ selftests to provide the config fragments which 
contain the config options required to actually run the tests.
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Merge tag 'core-rseq-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip

Pull rseq update from Thomas Gleixner:
 "A trivial update for RSEQ selftests to provide the config fragments
  which contain the config options required to actually run the tests"

* tag 'core-rseq-2026-06-13' of gitolite.kernel.org:pub/scm/linux/kernel/git/tip/tip:
  selftests/rseq: Add config fragment
 2026-06-15 13:14:36 +05:30
Alexei Starovoitov
e4287bf34f selftests/bpf: Work around llvm stack overflow in crypto progs 
clang 23 fails to build crypto_bench.c and crypto_sanity.c with
"BPF stack limit exceeded". The progs fill a 408-byte
bpf_crypto_params on the stack and pass it to bpf_crypto_ctx_create().
clang 23 copies the byte-aligned cipher/key globals into it one byte at
a time through the stack, and keeps more than one copy of the struct
around. Together that blows the 512-byte limit.

Align the source arrays to 8 bytes so the copy is word-wise, and move
params off the stack into a static .bss var. static keeps it out of the
skeleton, where bpf_crypto_params is an incomplete type. Either change
alone is not enough.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 2026-06-15 00:19:44 -07:00
Linus Torvalds
5504ce0317 Power management updates for 7.2-rc1 
- Fix a race between cpufreq suspend and CPU hotplug during system
    shutdown (Tianxiang Chen)
 
  - Avoid redundant target() calls for unchanged limits and fix a typo
    in a comment in the cpufreq core (Viresh Kumar)
 
  - Fix concurrency issues related to sysfs attributes access that affect
    cpufreq governors using the common governor code (Zhongqiu Han)
 
  - Simplify frequency limit handling in the conservative cpufreq
    governor (Lifeng Zheng)
 
  - Fix descriptions of the conservative governor freq_step tunable and
    the ondemand governor sampling_down_factor tunable in the cpufreq
    documentation (Pengjie Zhang)
 
  - Fix use-after-free and double free during _OSC evaluation in the PCC
    cpufreq driver (Yuho Choi)
 
  - Rework the handling of policy min and max frequency values in the
    cpufreq core to allow drivers to specify special initial values for
    the scaling_min_freq and scaling_max_freq sysfs attributes (Pierre
    Gondois)
 
  - Add cpufreq scaling support for Qualcomm Shikra SoC (Taniya Das,
    Imran Shaik).
 
  - Improve the warning message on HWP-disabled hybrid processors printed
    by the intel_pstate driver and sync policy->cur during CPU offline in
    it (Yohei Kojima, Fushuai Wang)
 
  - Drop cpufreq support for AMD Elan SC4* (Sean Young)
 
  - Minor fixes for cpufreq drivers (Krzysztof Kozlowski, Akashdeep Kaur,
    Hans Zhang, Guangshuo Li, Xueqin Luo)
 
  - Clean up dead dependencies on X86 in the cpufreq Kconfig (Julian
    Braha)
 
  - Allow the intel_idle driver to avoid exposing C-states that are
    redundant when PC6 is disabled (Artem Bityutskiy)
 
  - Fix memory leak and a potential race in the OPP core (Abdun Nihaal,
    Di Shen)
 
  - Mark Rust OPP methods as inline (Nicolás Antinori)
 
  - Fix misc device registration failure path in the PM QoS core (Yuho
    Choi)
 
  - Add sysctl interface for DPM watchdog timeouts (Tzung-Bi Shih)
 
  - Use complete() instead of complete_all() in device_pm_sleep_init() to
    avoid a false-positive warning from lockdep_assert_RT_in_threaded_ctx()
    when CONFIG_PROVE_RAW_LOCK_NESTING is enabled (Jiakai Xu)
 
  - Use a flexible array for CRC uncompressed buffers during hibernation
    image saving (Rosen Penev)
 
  - Make the LZ4 algorithm available for hibernation compression (l1rox3)
 
  - Move the preallocate_image() call during hibernation after the
    "prepare" phase of the "freeze" transition (Matthew Leach)
 
  - Fix a memory leak in rapl_add_package_cpuslocked() in the intel_rapl
    power capping driver and use sysfs_emit() in cpumask_show() in that
    driver (Sumeet Pawnikar, Yury Norov)
 
  - Fix ValueError when parsing incomplete device properties in the
    pm-graph utility (Gongwei Li)
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Merge tag 'pm-7.2-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:
 "Over a half of the changes here are cpufreq updates that include core
  modifications, fixes of the old-style governors, new hardware support
  in drivers, assorded driver fixes and cleanups, and the removal of one
  driver (AMD Elan SC4*).

  Apart from that, the intel_idle driver will now be able to avoid
  exposing redundant C-states if PC6 is disabled and there are new
  sysctl knobs for device suspend/resume watchdog timeouts, hibernation
  gets built-in LZ4 support for image compression and there is the usual
  collection of assorted fixes and cleanups.

  Specifics:

   - Fix a race between cpufreq suspend and CPU hotplug during system
     shutdown (Tianxiang Chen)

   - Avoid redundant target() calls for unchanged limits and fix a typo
     in a comment in the cpufreq core (Viresh Kumar)

   - Fix concurrency issues related to sysfs attributes access that
     affect cpufreq governors using the common governor code (Zhongqiu
     Han)

   - Simplify frequency limit handling in the conservative cpufreq
     governor (Lifeng Zheng)

   - Fix descriptions of the conservative governor freq_step tunable and
     the ondemand governor sampling_down_factor tunable in the cpufreq
     documentation (Pengjie Zhang)

   - Fix use-after-free and double free during _OSC evaluation in the
     PCC cpufreq driver (Yuho Choi)

   - Rework the handling of policy min and max frequency values in the
     cpufreq core to allow drivers to specify special initial values for
     the scaling_min_freq and scaling_max_freq sysfs attributes (Pierre
     Gondois)

   - Add cpufreq scaling support for Qualcomm Shikra SoC (Taniya Das,
     Imran Shaik).

   - Improve the warning message on HWP-disabled hybrid processors
     printed by the intel_pstate driver and sync policy->cur during CPU
     offline in it (Yohei Kojima, Fushuai Wang)

   - Drop cpufreq support for AMD Elan SC4* (Sean Young)

   - Minor fixes for cpufreq drivers (Krzysztof Kozlowski, Akashdeep
     Kaur, Hans Zhang, Guangshuo Li, Xueqin Luo)

   - Clean up dead dependencies on X86 in the cpufreq Kconfig (Julian
     Braha)

   - Allow the intel_idle driver to avoid exposing C-states that are
     redundant when PC6 is disabled (Artem Bityutskiy)

   - Fix memory leak and a potential race in the OPP core (Abdun Nihaal,
     Di Shen)

   - Mark Rust OPP methods as inline (Nicolás Antinori)

   - Fix misc device registration failure path in the PM QoS core (Yuho
     Choi)

   - Add sysctl interface for DPM watchdog timeouts (Tzung-Bi Shih)

   - Use complete() instead of complete_all() in device_pm_sleep_init()
     to avoid a false-positive warning from lockdep_assert_RT_in_threaded_ctx()
     when CONFIG_PROVE_RAW_LOCK_NESTING is enabled (Jiakai Xu)

   - Use a flexible array for CRC uncompressed buffers during
     hibernation image saving (Rosen Penev)

   - Make the LZ4 algorithm available for hibernation compression
     (l1rox3)

   - Move the preallocate_image() call during hibernation after the
     "prepare" phase of the "freeze" transition (Matthew Leach)

   - Fix a memory leak in rapl_add_package_cpuslocked() in the
     intel_rapl power capping driver and use sysfs_emit() in
     cpumask_show() in that driver (Sumeet Pawnikar, Yury Norov)

   - Fix ValueError when parsing incomplete device properties in the
     pm-graph utility (Gongwei Li)"

* tag 'pm-7.2-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/rafael/linux-pm: (40 commits)
  PM: dpm_watchdog: Add sysctl interface for DPM watchdog timeouts
  PM: QoS: Fix misc device registration unwind
  cpufreq: Use policy->min/max init as QoS request
  cpufreq: Remove driver default policy->min/max init
  cpufreq: Set default policy->min/max values for all drivers
  cpufreq: Extract cpufreq_policy_init_qos() function
  cpufreq: Documentation: fix conservative governor freq_step description
  cpufreq: ti: Add EPROBE_DEFER for K3 SoCs
  cpufreq: qcom: Add cpufreq scaling support for Qualcomm Shikra SoC
  dt-bindings: cpufreq: Document Qualcomm Shikra SoC EPSS
  powercap: intel_rapl: Use sysfs_emit() in cpumask_show()
  cpufreq: governor: Fix stale prev_cpu_nice spike when enabling ignore_nice_load
  cpufreq: governor: Fix data races on per-CPU idle/nice baselines
  PM: hibernate: Use flexible array for CRC uncompressed buffers
  powercap: intel_rapl: Fix memory leak in rapl_add_package_cpuslocked()
  PM: hibernate: make LZ4 available for hibernation compression
  PM: sleep: Use complete() in device_pm_sleep_init()
  opp: rust: mark OPP methods as inline
  cpufreq: intel_pstate: Improve warning message on HWP-disabled hybrid CPUs
  cpufreq: elanfreq: Drop support for AMD Elan SC4*
  ...
 2026-06-15 11:37:18 +05:30
Linus Torvalds
eed451031f ACPI support updates for 7.2-rc1 
- Fix multiple issues related to probe, removal and missing NVDIMM
    device notifications in the ACPI NFIT driver (Rafael Wysocki)
 
  - Add support for devres-based management of ACPI notify handlers to
    the ACPI core (Rafael Wysocki)
 
  - Switch multiple core ACPI device drivers (including the ACPI PAD,
    ACPI video bus, ACPI HED, ACPI thermal zone, ACPI AC, ACPI battery,
    and ACPI NFIT drivers) over to using devres-based resource management
    during probe (Rafael Wysocki)
 
  - Replace mutex_lock/unlock() with guard()/scoped_guard() in the ACPI
    PMIC driver (Maxwell Doose)
 
  - Fix message kref handling in the dead device path of the ACPI IPMI
    address space handler (Yuho Choi)
 
  - Use sysfs_emit() in idlecpus_show() in the ACPI processor aggregator
    device (PAD) driver (Yury Norov)
 
  - Clean up device_id_scheme initialization in the ACPI video bus driver
    (Jean-Ralph Aviles)
 
  - Clean up lid handling in the ACPI button driver and
    acpi_button_probe(), reorganize installing and removing event
    handlers in that driver and switch it over to using devres-based
    resource management during probe (Rafael Wysocki)
 
  - Add support for the Legacy Virtual Register (LVR) field in I2C serial
    bus resource descriptors to ACPICA (Akhil R)
 
  - Fix multiple issues related to bounds checks, input validation,
    use-after-free, and integer overflow checks in the AML interpreter
    in ACPICA (ikaros)
 
  - Update the copyright year to 2026 in ACPICA files and make minor
    changes related to ACPI 6.6 support (Pawel Chmielewski)
 
  - Remove spurious precision from format used to dump parse trees in
    ACPICA (David Laight)
 
  - Add modern standby DSM GUIDs to ACPICA header files (Daniel Schaefer)
 
  - Fix FADT 32/64X length mismatch warning in ACPICA (Abdelkader Boudih)
 
  - Update D3hot/cold device power states definitions in ACPICA header
    files (Aymeric Wibo)
 
  - Fix NULL pointer dereference in acpi_ns_custom_package() (Weiming
    Shi)
 
  - Update ACPICA version to 20260408 (Saket Dumbre)
 
  - Add cpuidle driver check in acpi_processor_register_idle_driver() to
    avoid evaluating _CST unnecessarily (Tony W Wang-oc)
 
  - Suppress UBSAN warning caused by field misuse during PCC-based
    register access in the ACPI CPPC library (Jeremy Linton)
 
  - Add support for CPPC v4 to the ACPI CPPC library (Sumit Gupta)
 
  - Update the ACPI device enumeration code to honor _DEP for ACPI0016
    PCI/CXL host bridges and make the ACPI PCI root driver clear _DEP
    dependencies for PCI roots that have become operational (Chen Pei)
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Merge tag 'acpi-7.2-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI support updates from Rafael Wysocki:
 "These update the ACPICA code in the kernel to upstream version
  20260408, introduce support for devres-based management of ACPI notify
  handlers and update some core ACPI device drivers on top of that
  (which includes some fixes and cleanups), add _DEP support for PCI/CXL
  roots and Intel CVS devices, fix a couple of assorted issues and clean
  up code:

   - Fix multiple issues related to probe, removal and missing NVDIMM
     device notifications in the ACPI NFIT driver (Rafael Wysocki)

   - Add support for devres-based management of ACPI notify handlers to
     the ACPI core (Rafael Wysocki)

   - Switch multiple core ACPI device drivers (including the ACPI PAD,
     ACPI video bus, ACPI HED, ACPI thermal zone, ACPI AC, ACPI battery,
     and ACPI NFIT drivers) over to using devres-based resource
     management during probe (Rafael Wysocki)

   - Replace mutex_lock/unlock() with guard()/scoped_guard() in the ACPI
     PMIC driver (Maxwell Doose)

   - Fix message kref handling in the dead device path of the ACPI IPMI
     address space handler (Yuho Choi)

   - Use sysfs_emit() in idlecpus_show() in the ACPI processor
     aggregator device (PAD) driver (Yury Norov)

   - Clean up device_id_scheme initialization in the ACPI video bus
     driver (Jean-Ralph Aviles)

   - Clean up lid handling in the ACPI button driver and
     acpi_button_probe(), reorganize installing and removing event
     handlers in that driver and switch it over to using devres-based
     resource management during probe (Rafael Wysocki)

   - Add support for the Legacy Virtual Register (LVR) field in I2C
     serial bus resource descriptors to ACPICA (Akhil R)

   - Fix multiple issues related to bounds checks, input validation,
     use-after-free, and integer overflow checks in the AML interpreter
     in ACPICA (ikaros)

   - Update the copyright year to 2026 in ACPICA files and make minor
     changes related to ACPI 6.6 support (Pawel Chmielewski)

   - Remove spurious precision from format used to dump parse trees in
     ACPICA (David Laight)

   - Add modern standby DSM GUIDs to ACPICA header files (Daniel
     Schaefer)

   - Fix FADT 32/64X length mismatch warning in ACPICA (Abdelkader
     Boudih)

   - Update D3hot/cold device power states definitions in ACPICA header
     files (Aymeric Wibo)

   - Fix NULL pointer dereference in acpi_ns_custom_package() (Weiming
     Shi)

   - Update ACPICA version to 20260408 (Saket Dumbre)

   - Add cpuidle driver check in acpi_processor_register_idle_driver()
     to avoid evaluating _CST unnecessarily (Tony W Wang-oc)

   - Suppress UBSAN warning caused by field misuse during PCC-based
     register access in the ACPI CPPC library (Jeremy Linton)

   - Add support for CPPC v4 to the ACPI CPPC library (Sumit Gupta)

   - Update the ACPI device enumeration code to honor _DEP for ACPI0016
     PCI/CXL host bridges and make the ACPI PCI root driver clear _DEP
     dependencies for PCI roots that have become operational (Chen Pei)"

* tag 'acpi-7.2-rc1' of gitolite.kernel.org:pub/scm/linux/kernel/git/rafael/linux-pm: (74 commits)
  ACPI: processor: Add cpuidle driver check in acpi_processor_register_idle_driver()
  ACPI: IPMI: Fix message kref handling on dead device
  ACPI: CPPC: Suppress UBSAN warning caused by field misuse
  ACPI: scan: Honor _DEP for Intel CVS devices
  ACPI: NFIT: core: Fix possible deadlock and missing notifications
  ACPI: NFIT: core: Eliminate redundant local variable
  ACPI: NFIT: core: Fix acpi_nfit_init() error cleanup
  ACPI: NFIT: core: Fix possible NULL pointer dereference
  ACPI: bus: Clean up devm_acpi_install_notify_handler()
  ACPI: button: Switch over to devres-based resource management
  ACPI: button: Reorganize installing and removing event handlers
  ACPI: button: Use string literals for generating netlink messages
  ACPI: button: Clean up adding and removing lid procfs interface
  ACPI: button: Merge two switch () statements in acpi_button_probe()
  ACPI: button: Drop redundant variable from acpi_button_probe()
  ACPI: button: Rework device verification during probe
  ACPI: CPPC: Add support for CPPC v4
  ACPI: PAD: Use sysfs_emit() in idlecpus_show()
  ACPI: scan: Honor _DEP for ACPI0016 PCI/CXL host bridge
  ACPI: PCI: Clear _DEP dependencies after PCI root bridge attach
  ...
 2026-06-15 11:32:38 +05:30
Linus Torvalds
966240b990 nolibc changes for 7.2 
Highlights:
 * New architectures: OpenRISC and 32-bit parisc
 * New library functionality: alloca(), assert(), creat() and ftruncate()
 * Automatic large file support
 * Proper 64-bit system call argument passing on x32 and MIPS N32
 * Cleanups of the testmatrix
 * Various bugfixes and cleanups
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Merge tag 'nolibc-20260614-for-7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc

Pull nolibc updates from Thomas Weißschuh:

 - New architectures: OpenRISC and 32-bit parisc

 - New library functionality: alloca(), assert(), creat() and
   ftruncate()

 - Automatic large file support

 - Proper 64-bit system call argument passing on x32 and MIPS N32

 - Cleanups of the testmatrix

 - Various bugfixes and cleanups

* tag 'nolibc-20260614-for-7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc: (37 commits)
  selftests/nolibc: test against -Wwrite-strings
  selftests/nolibc: use mutable buffer for execve() argv string
  tools/nolibc: cast default values of program_invocation_name
  tools/nolibc: add ftruncate()
  tools/nolibc: add a helper to split a 64-bit argument into 32-bit halves
  selftests/nolibc: enable CONFIG_TMPFS for sparc32
  tools/nolibc: stackprotector: Avoid stalling program startup if crng is not init yet
  tools/nolibc: getopt: Fix potential out of bounds access
  selftests/nolibc: test open mode handling
  tools/nolibc: always pass mode to open syscall
  tools/nolibc: split open mode handling into a macro
  tools/nolibc: split implicit open flags into a macro
  tools/nolibc: add support for 32-bit parisc
  selftests/nolibc: avoid function pointer comparisons
  tools/nolibc: add support for OpenRISC / or1k
  selftests/nolibc: use vmlinux for MIPS tests
  selftests/nolibc: trim IMAGE mappings
  selftests/nolibc: trim DEFCONFIG mappings
  selftests/nolibc: trim QEMU_ARCH mappings
  selftests/nolibc: use QEMU_ARCH for QEMU_ARCH_USER
  ...
 2026-06-15 11:29:31 +05:30
Sechang Lim
70b139d048 selftests/bpf: add test for bpf_msg_pop_data() overflow 
Add a test in sockmap_basic.c that calls bpf_msg_pop_data() with a length
close to U32_MAX, which overflows the start + len bounds check. The sk_msg
program records the return value over a sendmsg and the test checks that
the call is rejected with -EINVAL.

Reviewed-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Cc: Jiayuan Chen <jiayuan.chen@linux.dev>
Signed-off-by: Sechang Lim <rhkrqnwk98@gmail.com>
Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Link: https://lore.kernel.org/r/20260615021959.140010-7-jiayuan.chen@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 2026-06-14 21:30:21 -07:00
Gabriele Monaco
1f32c0d619 selftsets/bpf: Retry map update on helper_fill_hashmap() 
helper_fill_hashmap() is used also on parallel and stress map tests.
Those are consistently failing with ENOMEM on kernels built with
PREEMPT_RT if preallocation is disabled. The failure is transient and
only called by the memory cache refill running in a preemptible
irq_work, which can easily stall in case of contention.

Use a retriable update in those cases to handle transient ENOMEM and
make the test more stable also on PREEMPT_RT.
Also fix the sign of the value printed in case of error (strerror()
expects a positive errno while updates return it negative).

Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Link: https://lore.kernel.org/r/20260611150704.95133-1-gmonaco@redhat.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 2026-06-14 21:27:28 -07:00
Linus Torvalds
b8b674748f RCU pull request for v7.2 
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Merge tag 'rcu.release.v7.2' of gitolite.kernel.org:pub/scm/linux/kernel/git/rcu/linux

Pull RCU updates from Uladzislau Rezki:
 "Torture test updates:

   - Improve kvm-series.sh script by adding examples in its header
     comment

   - Lazy RCU is more fully tested now by replacing call_rcu_hurry()
     with call_rcu() and doing rcu_barrier() to motivate lazy callbacks
     during a stutter pause

   - Add more synonyms for the "--do-normal" group of torture.sh
     command-line arguments

  Misc changes:

   - Reduce stack usage of nocb_gp_wait() to address frame size warning
     when built with CONFIG_UBSAN_ALIGNMENT

   - The synchronize_rcu() call can detect the flood and latches a
     normal/default path temporary switching to wait_rcu_gp() path

   - Document using rcu_access_pointer() to fetch the old pointer for
     lockless cmpxchg() updates

   - Simplify some RCU code using clamp_val()

   - Fix a kerneldoc header comment typo in srcu_down_read_fast()"

* tag 'rcu.release.v7.2' of gitolite.kernel.org:pub/scm/linux/kernel/git/rcu/linux:
  rcu/nocb: reduce stack usage in nocb_gp_wait()
  rcu-tasks: Fix possible boot-time tests failed for the call_rcu_tasks()
  rcu: Latch normal synchronize_rcu() path on flood
  rcu: Document rcu_access_pointer() feeding into cmpxchg()
  rcu: Simplify param_set_next_fqs_jiffies() by applying clamp_val()
  rcu: Simplify rcu_do_batch() by applying clamp()
  checkpatch: Undeprecate rcu_read_lock_trace() and rcu_read_unlock_trace()
  srcu: Fix kerneldoc header comment typo in srcu_down_read_fast()
  torture: Allow "norm" abbreviation for "normal"
  torture: Improve kvm-series.sh header comment
  torture: Add torture_sched_set_normal() for user-specified nice values
  rcutorture: Fully test lazy RCU
 2026-06-15 09:16:00 +05:30
David Windsor
05ae621d4e selftests/bpf: Add test for sleepable lsm_cgroup rejection 
Confirm the verifier rejects loading a sleepable BPF_LSM_CGROUP program,
as introduced in commit 5b038319be ("bpf: Reject sleepable
BPF_LSM_CGROUP programs at load time").

Signed-off-by: David Windsor <dwindsor@gmail.com>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Link: https://lore.kernel.org/r/20260611143549.703914-1-dwindsor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 2026-06-14 19:39:41 -07:00
Leon Hwang
5cf2c21ab0 selftests/bpf: Add test to verify the fix for bpf_setsockopt() helper 
Verify the fix by:

1. Attach cgroup sockops prog.
2. Build a tcp connection using ipv4 addr in ipv6 socket.
3. Verify the return value of bpf_setsockopt() helper.

Assisted-by: Codex:gpt-5.5-xhigh
Signed-off-by: Leon Hwang <leon.hwang@linux.dev>
Link: https://lore.kernel.org/r/20260613162443.60515-3-leon.hwang@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 2026-06-14 17:38:55 -07:00
Leo Yan
62617d28d9 selftests/bpf: Avoid static LLVM linking for cross builds 
The BPF selftests prefer static LLVM linking, which works for native
builds but can break cross builds. Its --link-static output may include
host-only libraries that are unavailable for the cross compilation,
causing link failures.

Avoid static LLVM linking for cross builds and use shared LLVM libraries
instead. Native builds keep the existing behavior.

Signed-off-by: Leo Yan <leo.yan@arm.com>
Link: https://lore.kernel.org/r/20260602-tools_build_fix_zero_init_bpf_only-v2-8-c76e5250ea1c@arm.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 2026-06-14 17:32:53 -07:00
Leo Yan
584f3b7a35 selftests/bpf: Use common CFLAGS for urandom_read 
The urandom_read helper and its shared library are built with $(CLANG)
directly rather than through the normal selftest $(CC) rules.

The CFLAGS variable can contain specific flags only for $(CC) but might
be imcompatible for $(CLANG) and those flags are not necessarily valid
for the clang-only urandom_read build.

Split the BPF selftest local flags into COMMON_CFLAGS and append them to
CFLAGS for the normal build path. Use COMMON_CFLAGS directly for
urandom_read and liburandom_read.so, while still filtering out -static as
before.

Signed-off-by: Leo Yan <leo.yan@arm.com>
Link: https://lore.kernel.org/r/20260602-tools_build_fix_zero_init_bpf_only-v2-7-c76e5250ea1c@arm.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 2026-06-14 17:32:53 -07:00