1. 13 Sep, 2021 5 commits
    • Vincenzo Frascino's avatar
      kasan: Extend KASAN mode kernel parameter · 9eab331f
      Vincenzo Frascino authored
      
      
      Architectures supported by KASAN_HW_TAGS can provide an asymmetric mode
      of execution. On an MTE enabled arm64 hw for example this can be
      identified with the asymmetric tagging mode of execution. In particular,
      when such a mode is present, the CPU triggers a fault on a tag mismatch
      during a load operation and asynchronously updates a register when a tag
      mismatch is detected during a store operation.
      
      Extend the KASAN HW execution mode kernel command line parameter to
      support asymmetric mode.
      
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
      Cc: Alexander Potapenko <glider@google.com>
      Cc: Andrey Konovalov <andreyknvl@gmail.com>
      Signed-off-by: Vincenzo Frascino's avatarVincenzo Frascino <vincenzo.frascino@arm.com>
      9eab331f
    • Vincenzo Frascino's avatar
      arm64: mte: Add asymmetric mode support · 6f22f85f
      Vincenzo Frascino authored
      
      
      MTE provides an asymmetric mode for detecting tag exceptions. In
      particular, when such a mode is present, the CPU triggers a fault
      on a tag mismatch during a load operation and asynchronously updates
      a register when a tag mismatch is detected during a store operation.
      
      Add support for MTE asymmetric mode.
      
      Note: If the CPU does not support MTE asymmetric mode the kernel falls
      back on synchronous mode which is the default for kasan=on.
      
      Cc: Will Deacon <will@kernel.org>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Andrey Konovalov <andreyknvl@gmail.com>
      Signed-off-by: Vincenzo Frascino's avatarVincenzo Frascino <vincenzo.frascino@arm.com>
      6f22f85f
    • Vincenzo Frascino's avatar
      arm64: mte: CPU feature detection for Asymm MTE · 2840a839
      Vincenzo Frascino authored
      
      
      Add the cpufeature entries to detect the presence of Asymmetric MTE.
      
      Note: The tag checking mode is initialized via cpu_enable_mte() ->
      kasan_init_hw_tags() hence to enable it we require asymmetric mode
      to be at least on the boot CPU. If the boot CPU does not have it, it is
      fine for late CPUs to have it as long as the feature is not enabled
      (ARM64_CPUCAP_BOOT_CPU_FEATURE).
      
      Cc: Will Deacon <will@kernel.org>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Cc: Suzuki K Poulose <Suzuki.Poulose@arm.com>
      Signed-off-by: Vincenzo Frascino's avatarVincenzo Frascino <vincenzo.frascino@arm.com>
      2840a839
    • Vincenzo Frascino's avatar
      arm64: mte: Bitfield definitions for Asymm MTE · dfd45701
      Vincenzo Frascino authored
      
      
      Add Asymmetric Memory Tagging Extension bitfield definitions.
      
      Cc: Will Deacon <will@kernel.org>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Signed-off-by: Vincenzo Frascino's avatarVincenzo Frascino <vincenzo.frascino@arm.com>
      dfd45701
    • Vincenzo Frascino's avatar
      kasan: Remove duplicate of kasan_flag_async · c8a85bc9
      Vincenzo Frascino authored
      
      
      After merging async mode for KASAN_HW_TAGS a duplicate of the
      kasan_flag_async flag was left erroneously inside the code.
      
      Remove the duplicate.
      
      Note: This change does not bring functional changes to the code
      base.
      
      Cc: Dmitry Vyukov <dvyukov@google.com>
      Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
      Cc: Alexander Potapenko <glider@google.com>
      Cc: Marco Elver <elver@google.com>
      Cc: Evgenii Stepanov <eugenis@google.com>
      Cc: Andrey Konovalov <andreyknvl@gmail.com>
      Signed-off-by: Vincenzo Frascino's avatarVincenzo Frascino <vincenzo.frascino@arm.com>
      c8a85bc9
  2. 12 Sep, 2021 12 commits
    • Linus Torvalds's avatar
      Linux 5.15-rc1 · 6880fa6c
      Linus Torvalds authored
      6880fa6c
    • Linus Torvalds's avatar
      Merge tag 'perf-tools-for-v5.15-2021-09-11' of... · b5b65f13
      Linus Torvalds authored
      Merge tag 'perf-tools-for-v5.15-2021-09-11' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
      
      Pull more perf tools updates from Arnaldo Carvalho de Melo:
      
       - Add missing fields and remove some duplicate fields when printing a
         perf_event_attr.
      
       - Fix hybrid config terms list corruption.
      
       - Update kernel header copies, some resulted in new kernel features
         being automagically added to 'perf trace' syscall/tracepoint argument
         id->string translators.
      
       - Add a file generated during the documentation build to .gitignore.
      
       - Add an option to build without libbfd, as some distros, like Debian
         consider its ABI unstable.
      
       - Add support to print a textual representation of IBS raw sample data
         in 'perf report'.
      
       - Fix bpf 'perf test' sample mismatch reporting
      
       - Fix passing arguments to stackcollapse report in a 'perf script'
         python script.
      
       - Allow build-id with trailing zeros.
      
       - Look for ImageBase in PE file to compute .text offset.
      
      * tag 'perf-tools-for-v5.15-2021-09-11' of gi...
      b5b65f13
    • Linus Torvalds's avatar
      Merge tag 'compiler-attributes-for-linus-v5.15-rc1-v2' of git://github.com/ojeda/linux · c3e46874
      Linus Torvalds authored
      Pull compiler attributes updates from Miguel Ojeda:
      
       - Fix __has_attribute(__no_sanitize_coverage__) for GCC 4 (Marco Elver)
      
       - Add Nick as Reviewer for compiler_attributes.h (Nick Desaulniers)
      
       - Move __compiletime_{error|warning} (Nick Desaulniers)
      
      * tag 'compiler-attributes-for-linus-v5.15-rc1-v2' of git://github.com/ojeda/linux:
        compiler_attributes.h: move __compiletime_{error|warning}
        MAINTAINERS: add Nick as Reviewer for compiler_attributes.h
        Compiler Attributes: fix __has_attribute(__no_sanitize_coverage__) for GCC 4
      c3e46874
    • Linus Torvalds's avatar
      Merge tag 'auxdisplay-for-linus-v5.15-rc1' of git://github.com/ojeda/linux · d41adc4e
      Linus Torvalds authored
      Pull auxdisplay updates from Miguel Ojeda:
       "An assortment of improvements for auxdisplay:
      
         - Replace symbolic permissions with octal permissions (Jinchao Wang)
      
         - ks0108: Switch to use module_parport_driver() (Andy Shevchenko)
      
         - charlcd: Drop unneeded initializers and switch to C99 style (Andy
           Shevchenko)
      
         - hd44780: Fix oops on module unloading (Lars Poeschel)
      
         - Add I2C gpio expander example (Ralf Schlatterbeck)"
      
      * tag 'auxdisplay-for-linus-v5.15-rc1' of git://github.com/ojeda/linux:
        auxdisplay: Replace symbolic permissions with octal permissions
        auxdisplay: ks0108: Switch to use module_parport_driver()
        auxdisplay: charlcd: Drop unneeded initializers and switch to C99 style
        auxdisplay: hd44780: Fix oops on module unloading
        auxdisplay: Add I2C gpio expander example
      d41adc4e
    • Linus Torvalds's avatar
      Merge tag 'smp-urgent-2021-09-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · f306b90c
      Linus Torvalds authored
      Pull CPU hotplug updates from Thomas Gleixner:
       "Updates for the SMP and CPU hotplug:
      
         - Remove DEFINE_SMP_CALL_CACHE_FUNCTION() which is a left over of the
           original hotplug code and now causing trouble with the ARM64 cache
           topology setup due to the pointless SMP function call.
      
           It's not longer required as the hotplug callbacks are guaranteed to
           be invoked on the upcoming CPU.
      
         - Remove the deprecated and now unused CPU hotplug functions
      
         - Rewrite the CPU hotplug API documentation"
      
      * tag 'smp-urgent-2021-09-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        Documentation: core-api/cpuhotplug: Rewrite the API section
        cpu/hotplug: Remove deprecated CPU-hotplug functions.
        thermal: Replace deprecated CPU-hotplug functions.
        drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION()
      f306b90c
    • Linus Torvalds's avatar
      Merge tag 'char-misc-5.15-rc1-lkdtm' of... · d8e988b6
      Linus Torvalds authored
      Merge tag 'char-misc-5.15-rc1-lkdtm' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
      
      Pull misc driver fix from Greg KH:
       "Here is a single patch for 5.15-rc1, for the lkdtm misc driver.
      
        It resolves a build issue that many people were hitting with your
        current tree, and Kees and others felt would be good to get merged
        before -rc1 comes out, to prevent them from having to constantly hit
        it as many development trees restart on -rc1, not older -rc releases.
      
        It has NOT been in linux-next, but has passed 0-day testing and looks
        'obviously correct' when reviewing it locally :)"
      
      * tag 'char-misc-5.15-rc1-lkdtm' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
        lkdtm: Use init_uts_ns.name instead of macros
      d8e988b6
    • Linus Torvalds's avatar
      Merge tag 'for-linus-5.15-1' of git://github.com/cminyard/linux-ipmi · 1791596b
      Linus Torvalds authored
      Pull IPMI updates from Corey Minyard:
       "A couple of very minor fixes for style and rate limiting.
      
        Nothing big, but probably needs to go in"
      
      * tag 'for-linus-5.15-1' of git://github.com/cminyard/linux-ipmi:
        char: ipmi: use DEVICE_ATTR helper macro
        ipmi: rate limit ipmi smi_event failure message
      1791596b
    • Linus Torvalds's avatar
      Merge tag 'sched_urgent_for_v5.15_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 56c24438
      Linus Torvalds authored
      Pull scheduler fixes from Borislav Petkov:
      
       - Make sure the idle timer expires in hardirq context, on PREEMPT_RT
      
       - Make sure the run-queue balance callback is invoked only on the
         outgoing CPU
      
      * tag 'sched_urgent_for_v5.15_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        sched: Prevent balance_push() on remote runqueues
        sched/idle: Make the idle timer expire in hard interrupt context
      56c24438
    • Linus Torvalds's avatar
      Merge tag 'locking_urgent_for_v5.15_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 165d05d8
      Linus Torvalds authored
      Pull locking fixes from Borislav Petkov:
      
       - Fix the futex PI requeue machinery to not return to userspace in
         inconsistent state
      
       - Avoid a potential null pointer dereference in the ww_mutex deadlock
         check
      
       - Other smaller cleanups and optimizations
      
      * tag 'locking_urgent_for_v5.15_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        locking/rtmutex: Fix ww_mutex deadlock check
        futex: Remove unused variable 'vpid' in futex_proxy_trylock_atomic()
        futex: Avoid redundant task lookup
        futex: Clarify comment for requeue_pi_wake_futex()
        futex: Prevent inconsistent state and exit race
        futex: Return error code instead of assigning it without effect
        locking/rwsem: Add missing __init_rwsem() for PREEMPT_RT
      165d05d8
    • Linus Torvalds's avatar
      Merge tag 'timers_urgent_for_v5.15_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · 7bf31426
      Linus Torvalds authored
      Pull timer fix from Borislav Petkov:
      
       - Handle negative second values properly when converting a timespec64
         to nanoseconds.
      
      * tag 'timers_urgent_for_v5.15_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        time: Handle negative seconds correctly in timespec64_to_ns()
      7bf31426
    • Linus Torvalds's avatar
      Merge branch 'misc.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · fdfc3463
      Linus Torvalds authored
      Pull namei updates from Al Viro:
       "Clearing fallout from mkdirat in io_uring series. The fix in the
        kern_path_locked() patch plus associated cleanups"
      
      * 'misc.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        putname(): IS_ERR_OR_NULL() is wrong here
        namei: Standardize callers of filename_create()
        namei: Standardize callers of filename_lookup()
        rename __filename_parentat() to filename_parentat()
        namei: Fix use after free in kern_path_locked
      fdfc3463
    • Linus Torvalds's avatar
      Merge tag '5.15-rc-cifs-part2' of git://git.samba.org/sfrench/cifs-2.6 · 8d4a0b5d
      Linus Torvalds authored
      Pull smbfs updates from Steve French:
       "cifs/smb3 updates:
      
         - DFS reconnect fix
      
         - begin creating common headers for server and client
      
         - rename the cifs_common directory to smbfs_common to be more
           consistent ie change use of the name cifs to smb (smb3 or smbfs is
           more accurate, as the very old cifs dialect has long been
           superseded by smb3 dialects).
      
        In the future we can rename the fs/cifs directory to fs/smbfs.
      
        This does not include the set of multichannel fixes nor the two
        deferred close fixes (they are still being reviewed and tested)"
      
      * tag '5.15-rc-cifs-part2' of git://git.samba.org/sfrench/cifs-2.6:
        cifs: properly invalidate cached root handle when closing it
        cifs: move SMB FSCTL definitions to common code
        cifs: rename cifs_common to smbfs_common
        cifs: update FSCTL definitions
      8d4a0b5d
  3. 11 Sep, 2021 23 commits
    • Linus Torvalds's avatar
      Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost · 78e70952
      Linus Torvalds authored
      Pull virtio updates from Michael Tsirkin:
      
       - vduse driver ("vDPA Device in Userspace") supporting emulated virtio
         block devices
      
       - virtio-vsock support for end of record with SEQPACKET
      
       - vdpa: mac and mq support for ifcvf and mlx5
      
       - vdpa: management netlink for ifcvf
      
       - virtio-i2c, gpio dt bindings
      
       - misc fixes and cleanups
      
      * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (39 commits)
        Documentation: Add documentation for VDUSE
        vduse: Introduce VDUSE - vDPA Device in Userspace
        vduse: Implement an MMU-based software IOTLB
        vdpa: Support transferring virtual addressing during DMA mapping
        vdpa: factor out vhost_vdpa_pa_map() and vhost_vdpa_pa_unmap()
        vdpa: Add an opaque pointer for vdpa_config_ops.dma_map()
        vhost-iotlb: Add an opaque pointer for vhost IOTLB
        vhost-vdpa: Handle the failure of vdpa_reset()
        vdpa: Add reset callback in vdpa_config_ops
        vdpa: Fix some coding s...
      78e70952
    • Linus Torvalds's avatar
      Merge tag 'riscv-for-linus-5.15-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux · b79bd0d5
      Linus Torvalds authored
      Pull more RISC-V updates from Palmer Dabbelt:
      
       - A pair of defconfig additions, for NVMe and the EFI filesystem
         localization options.
      
       - A larger address space for stack randomization.
      
       - A cleanup to our install rules.
      
       - A DTS update for the Microchip Icicle board, to fix the serial
         console.
      
       - Support for build-time table sorting, which allows us to have
         __ex_table read-only.
      
      * tag 'riscv-for-linus-5.15-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
        riscv: Move EXCEPTION_TABLE to RO_DATA segment
        riscv: Enable BUILDTIME_TABLE_SORT
        riscv: dts: microchip: mpfs-icicle: Fix serial console
        riscv: move the (z)install rules to arch/riscv/Makefile
        riscv: Improve stack randomisation on RV64
        riscv: defconfig: enable NLS_CODEPAGE_437, NLS_ISO8859_1
        riscv: defconfig: enable BLK_DEV_NVME
      b79bd0d5
    • Linus Torvalds's avatar
      Merge branch 'for-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux · 4e1c7544
      Linus Torvalds authored
      Pull coccinelle updates from Julia Lawall:
       "These changes update some existing semantic patches with
        respect to some recent changes in the kernel.
      
        Specifically, the change to kvmalloc.cocci searches for
        kfree_sensitive rather than kzfree, and the change to
        use_after_iter.cocci adds list_entry_is_head as a valid
        use of a list iterator index variable after the end of
        the loop"
      
      * 'for-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux:
        scripts: coccinelle: allow list_entry_is_head() to use pos
        coccinelle: api: rename kzfree to kfree_sensitive
      4e1c7544
    • Arnaldo Carvalho de Melo's avatar
      tools headers UAPI: Update tools's copy of drm.h headers · 17a99e52
      Arnaldo Carvalho de Melo authored
      Picking the changes from:
      
        17ce9c61
      
       ("drm: document DRM_IOCTL_MODE_RMFB")
      
      Doesn't result in any tooling changes:
      
        $ tools/perf/trace/beauty/drm_ioctl.sh  > before
        $ cp include/uapi/drm/drm.h tools/include/uapi/drm/drm.h
        $ tools/perf/trace/beauty/drm_ioctl.sh  > after
        $ diff -u before after
      
      Silencing these perf build warnings:
      
        Warning: Kernel ABI header at 'tools/include/uapi/drm/drm.h' differs from latest version at 'include/uapi/drm/drm.h'
        diff -u tools/include/uapi/drm/drm.h include/uapi/drm/drm.h
      
      Cc: Simon Ser <contact@emersion.fr>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      17a99e52
    • Arnaldo Carvalho de Melo's avatar
      tools headers UAPI: Sync drm/i915_drm.h with the kernel sources · 4dc24d7c
      Arnaldo Carvalho de Melo authored
      To pick the changes in:
      
        b65a9489 ("drm/i915/userptr: Probe existence of backing struct pages upon creation")
        ee242ca7 ("drm/i915/guc: Implement GuC priority management")
        81340cf3 ("drm/i915/uapi: reject set_domain for discrete")
        7961c5b6 ("drm/i915: Add TTM offset argument to mmap.")
        aef7b67a ("drm/i915/uapi: convert drm_i915_gem_userptr to kernel doc")
        e7737b67 ("drm/i915/uapi: reject caching ioctls for discrete")
        3aa8c57f ("drm/i915/uapi: convert drm_i915_gem_set_domain to kernel doc")
        289f5a72 ("drm/i915/uapi: convert drm_i915_gem_caching to kernel doc")
        4a766ae4 ("drm/i915: Drop the CONTEXT_CLONE API (v2)")
        6ff6d61d ("drm/i915: Drop I915_CONTEXT_PARAM_NO_ZEROMAP")
        fe4751c3 ("drm/i915: Drop I915_CONTEXT_PARAM_RINGSIZE")
        57772953 ("drm/i915: Document the Virtual Engine uAPI")
        c649432e
      
       ("drm/i915: Fix busy ioctl commentary")
      
      That doesn't result in any changes to tooling as no new ioctl were
      added (at least not perceived by tools/perf/trace/beauty/drm_ioctl.sh).
      
      Addressing this perf build warning:
      
        Warning: Kernel ABI header at 'tools/include/uapi/drm/i915_drm.h' differs from latest version at 'include/uapi/drm/i915_drm.h'
        diff -u tools/include/uapi/drm/i915_drm.h include/uapi/drm/i915_drm.h
      
      Cc: Chris Wilson <chris@chris-wilson.co.uk>
      Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
      Cc: Jason Ekstrand <jason@jlekstrand.net>
      Cc: John Harrison <John.C.Harrison@Intel.com>
      Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
      Cc: Matthew Auld <matthew.auld@intel.com>
      Cc: Matthew Brost <matthew.brost@intel.com>
      Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      4dc24d7c
    • Arnaldo Carvalho de Melo's avatar
      tools headers UAPI: Sync linux/fs.h with the kernel sources · 2bae3e64
      Arnaldo Carvalho de Melo authored
      To pick the change in:
      
        7957d93b
      
       ("block: add ioctl to read the disk sequence number")
      
      It adds a new ioctl, but we are still not using that to generate tables
      for 'perf trace', so no changes in tooling.
      
      This silences this perf build warning:
      
        Warning: Kernel ABI header at 'tools/include/uapi/linux/fs.h' differs from latest version at 'include/uapi/linux/fs.h'
        diff -u tools/include/uapi/linux/fs.h include/uapi/linux/fs.h
      
      Cc: Jens Axboe <axboe@kernel.dk>
      Cc: Matteo Croce <mcroce@microsoft.com>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      2bae3e64
    • Arnaldo Carvalho de Melo's avatar
      tools headers UAPI: Sync linux/in.h copy with the kernel sources · ee286c60
      Arnaldo Carvalho de Melo authored
      To pick the changes in:
      
        db243b79 ("net/ipv4/ipv6: Replace one-element arraya with flexible-array members")
        2d3e5caf
      
       ("net/ipv4: Replace one-element array with flexible-array member")
      
      That don't result in any change in tooling, the structs changed remains
      with the same layout.
      
      This addresses this build warning:
      
        Warning: Kernel ABI header at 'tools/include/uapi/linux/in.h' differs from latest version at 'include/uapi/linux/in.h'
        diff -u tools/include/uapi/linux/in.h include/uapi/linux/in.h
      
      Cc: David S. Miller <davem@davemloft.net>
      Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      ee286c60
    • Ian Rogers's avatar
      perf tools: Add an option to build without libbfd · 0d1c50ac
      Ian Rogers authored
      Some distributions, like debian, don't link perf with libbfd. Add a
      build flag to make this configuration buildable and testable.
      
      This was inspired by:
      
        https://lore.kernel.org/linux-perf-users/20210910102307.2055484-1-tonyg@leastfixedpoint.com/T/#u
      
      Signed-off-by: default avatarIan Rogers <irogers@google.com>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mark Rutland <mark.rutland@arm.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: tony garnock-jones <tonyg@leastfixedpoint.com>
      Link: http://lore.kernel.org/lkml/20210910225756.729087-1-irogers@google.com
      
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      0d1c50ac
    • Namhyung Kim's avatar
      perf tools: Allow build-id with trailing zeros · 4a86d414
      Namhyung Kim authored
      Currently perf saves a build-id with size but old versions assumes the
      size of 20.  In case the build-id is less than 20 (like for MD5), it'd
      fill the rest with 0s.
      
      I saw a problem when old version of perf record saved a binary in the
      build-id cache and new version of perf reads the data.  The symbols
      should be read from the build-id cache (as the path no longer has the
      same binary) but it failed due to mismatch in the build-id.
      
        symsrc__init: build id mismatch for /home/namhyung/.debug/.build-id/53/e4c2f42a4c61a2d632d92a72afa08f00000000/elf.
      
      The build-id event in the data has 20 byte build-ids, but it saw a
      different size (16) when it reads the build-id of the elf file in the
      build-id cache.
      
        $ readelf -n ~/.debug/.build-id/53/e4c2f42a4c61a2d632d92a72afa08f00000000/elf
      
        Displaying notes found in: .note.gnu.build-id
          Owner                Data size 	Description
          GNU                  0x00000010	NT_GNU_BUILD_ID (unique build ID bitstring)
            Build ID: 53e4c2f42a4c61a2d632d92a72afa08f
      
      Let's fix this by allowing trailing zeros if the size is different.
      
      Fixes: 39be8d01
      
       ("perf tools: Pass build_id object to dso__build_id_equal()")
      Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
      Acked-by: default avatarJiri Olsa <jolsa@redhat.com>
      Cc: Andi Kleen <ak@linux.intel.com>
      Cc: Ian Rogers <irogers@google.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Link: http://lore.kernel.org/lkml/20210910224630.1084877-1-namhyung@kernel.org
      
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      4a86d414
    • Adrian Hunter's avatar
      perf tools: Fix hybrid config terms list corruption · 99fc5941
      Adrian Hunter authored
      A config terms list was spliced twice, resulting in a never-ending loop
      when the list was traversed. Fix by using list_splice_init() and copying
      and freeing the lists as necessary.
      
      This patch also depends on patch "perf tools: Factor out
      copy_config_terms() and free_config_terms()"
      
      Example on ADL:
      
       Before:
      
        # perf record -e '{intel_pt//,cycles/aux-sample-size=4096/pp}' uname &
        # jobs
        [1]+  Running                    perf record -e "{intel_pt//,cycles/aux-sample-size=4096/pp}" uname
        # perf top -E 10
          PerfTop:    4071 irqs/sec  kernel: 6.9%  exact: 100.0% lost: 0/0 drop: 0/0 [4000Hz cycles],  (all, 24 CPUs)
        ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
      
          97.60%  perf           [.] __evsel__get_config_term
           0.25%  [kernel]       [k] kallsyms_expand_symbol.constprop.13
           0.24%  perf           [.] kallsyms__parse
           0.15%  [kernel]       [k] _raw_spin_lock
           0.14%  [kernel]       [k] number
           0.13%  [kernel]       [k] advance_transaction
           0.08%  [kernel]       [k] format_decode
           0.08%  perf           [.] map__process_kallsym_symbol
           0.08%  perf           [.] rb_insert_color
           0.08%  [kernel]       [k] vsnprintf
        exiting.
        # kill %1
      
      After:
      
        # perf record -e '{intel_pt//,cycles/aux-sample-size=4096/pp}' uname &
        Linux
        [ perf record: Woken up 1 times to write data ]
        [ perf record: Captured and wrote 0.060 MB perf.data ]
        # perf script | head
             perf-exec   604 [001]  1827.312293:                            psb:  psb offs: 0                       ffffffffb8415e87 pt_config_start+0x37 ([kernel.kallsyms])
             perf-exec   604  1827.312293:          1                       branches:  ffffffffb856a3bd event_sched_in.isra.133+0xfd ([kernel.kallsyms]) => ffffffffb856a9a0 perf_pmu_nop_void+0x0 ([kernel.kallsyms])
             perf-exec   604  1827.312293:          1                       branches:  ffffffffb856b10e merge_sched_in+0x26e ([kernel.kallsyms]) => ffffffffb856a2c0 event_sched_in.isra.133+0x0 ([kernel.kallsyms])
             perf-exec   604  1827.312293:          1                       branches:  ffffffffb856a45d event_sched_in.isra.133+0x19d ([kernel.kallsyms]) => ffffffffb8568b80 perf_event_set_state.part.61+0x0 ([kernel.kallsyms])
             perf-exec   604  1827.312293:          1                       branches:  ffffffffb8568b86 perf_event_set_state.part.61+0x6 ([kernel.kallsyms]) => ffffffffb85662a0 perf_event_update_time+0x0 ([kernel.kallsyms])
             perf-exec   604  1827.312293:          1                       branches:  ffffffffb856a35c event_sched_in.isra.133+0x9c ([kernel.kallsyms]) => ffffffffb8567610 perf_log_itrace_start+0x0 ([kernel.kallsyms])
             perf-exec   604  1827.312293:          1                       branches:  ffffffffb856a377 event_sched_in.isra.133+0xb7 ([kernel.kallsyms]) => ffffffffb8403b40 x86_pmu_add+0x0 ([kernel.kallsyms])
             perf-exec   604  1827.312293:          1                       branches:  ffffffffb8403b86 x86_pmu_add+0x46 ([kernel.kallsyms]) => ffffffffb8403940 collect_events+0x0 ([kernel.kallsyms])
             perf-exec   604  1827.312293:          1                       branches:  ffffffffb8403a7b collect_events+0x13b ([kernel.kallsyms]) => ffffffffb8402cd0 collect_event+0x0 ([kernel.kallsyms])
      
      Fixes: 30def61f ("perf parse-events Create two hybrid cache events")
      Fixes: 94da591b ("perf parse-events Create two hybrid raw events")
      Fixes: 9cbfa2f6
      
       ("perf parse-events Create two hybrid hardware events")
      Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
      Acked-by: default avatarJiri Olsa <jolsa@redhat.com>
      Cc: Jin Yao <yao.jin@linux.intel.com>
      Cc: Kan Liang <kan.liang@linux.intel.com>
      Link: https //lore.kernel.org/r/20210909125508.28693-3-adrian.hunter@intel.com
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      99fc5941
    • Adrian Hunter's avatar
      perf tools: Factor out copy_config_terms() and free_config_terms() · a7d212fc
      Adrian Hunter authored
      
      
      Factor out copy_config_terms() and free_config_terms() so that they can
      be reused.
      Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
      Acked-by: default avatarJiri Olsa <jolsa@redhat.com>
      Cc: Jin Yao <yao.jin@linux.intel.com>
      Cc: Kan Liang <kan.liang@linux.intel.com>
      Link: https //lore.kernel.org/r/20210909125508.28693-2-adrian.hunter@intel.com
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      a7d212fc
    • Adrian Hunter's avatar
      perf tools: Fix perf_event_attr__fprintf() missing/dupl. fields · eb34363a
      Adrian Hunter authored
      
      
      Some fields are missing and text_poke is duplicated. Fix that up.
      Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Link: http://lore.kernel.org/lkml/20210911120550.12203-1-adrian.hunter@intel.com
      
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      eb34363a
    • Ian Rogers's avatar
      perf tools: Ignore Documentation dependency file · da4572d6
      Ian Rogers authored
      When building directly on the checked out repository the build process
      produces a file that should be ignored, so add it to .gitignore.
      
      Fixes: a81df63a
      
       ("perf doc: Fix doc.dep")
      Reported-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      Signed-off-by: default avatarIan Rogers <irogers@google.com>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Mark Rutland <mark.rutland@arm.com>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Link: http://lore.kernel.org/lkml/20210910232249.739661-1-irogers@google.com
      
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      da4572d6
    • Linus Torvalds's avatar
      Merge tag 'io_uring-5.15-2021-09-11' of git://git.kernel.dk/linux-block · c605c396
      Linus Torvalds authored
      Pull io_uring fixes from Jens Axboe:
      
       - Fix an off-by-one in a BUILD_BUG_ON() check. Not a real issue right
         now as we have plenty of flags left, but could become one. (Hao)
      
       - Fix lockdep issue introduced in this merge window (me)
      
       - Fix a few issues with the worker creation (me, Pavel, Qiang)
      
       - Fix regression with wq_has_sleeper() for IOPOLL (Pavel)
      
       - Timeout link error propagation fix (Pavel)
      
      * tag 'io_uring-5.15-2021-09-11' of git://git.kernel.dk/linux-block:
        io_uring: fix off-by-one in BUILD_BUG_ON check of __REQ_F_LAST_BIT
        io_uring: fail links of cancelled timeouts
        io-wq: fix memory leak in create_io_worker()
        io-wq: fix silly logic error in io_task_work_match()
        io_uring: drop ctx->uring_lock before acquiring sqd->lock
        io_uring: fix missing mb() before waitqueue_active
        io-wq: fix cancellation on create-worker failure
      c605c396
    • Linus Torvalds's avatar
      Merge tag 'block-5.15-2021-09-11' of git://git.kernel.dk/linux-block · c0f7e49f
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
      
       - NVMe pull request from Christoph:
           - fix nvmet command set reporting for passthrough controllers (Adam Manzanares)
           - update a MAINTAINERS email address (Chaitanya Kulkarni)
           - set QUEUE_FLAG_NOWAIT for nvme-multipth (me)
           - handle errors from add_disk() (Luis Chamberlain)
           - update the keep alive interval when kato is modified (Tatsuya Sasaki)
           - fix a buffer overrun in nvmet_subsys_attr_serial (Hannes Reinecke)
           - do not reset transport on data digest errors in nvme-tcp (Daniel Wagner)
           - only call synchronize_srcu when clearing current path (Daniel Wagner)
           - revalidate paths during rescan (Hannes Reinecke)
      
       - Split out the fs/block_dev into block/fops.c and block/bdev.c, which
         has been long overdue. Do this now before -rc1, to avoid annoying
         conflicts due to this (Christoph)
      
       - blk-throtl use-after-free fix (Li)
      
       - Improve plug depth for multi-device p...
      c0f7e49f
    • Linus Torvalds's avatar
      Merge tag 'libata-5.15-2021-09-11' of git://git.kernel.dk/linux-block · 8177a5c9
      Linus Torvalds authored
      Pull libata maintainer update from Jens Axboe:
       "Damien agreed to take over maintainership of libata, and he would be a
        great candidate for it. Update the MAINTAINERS entry to reflect the
        change in maintainer and git tree"
      
      * tag 'libata-5.15-2021-09-11' of git://git.kernel.dk/linux-block:
        libata: pass over maintainership to Damien Le Moal
      8177a5c9
    • Linus Torvalds's avatar
      Merge tag 'trace-v5.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace · ce4c8f88
      Linus Torvalds authored
      Pull tracing fixes from Steven Rostedt:
       "Minor fixes to the processing of the bootconfig tree"
      
      * tag 'trace-v5.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
        bootconfig: Rename xbc_node_find_child() to xbc_node_find_subkey()
        tracing/boot: Fix to check the histogram control param is a leaf node
        tracing/boot: Fix trace_boot_hist_add_array() to check array is value
      ce4c8f88
    • Linus Torvalds's avatar
      Merge tag 'devicetree-fixes-for-5.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux · a1406e42
      Linus Torvalds authored
      Pull devicetree fixes from Rob Herring:
      
       - Disable fw_devlinks on x86 DT platforms to fix OLPC
      
       - More replacing oneOf+const with enum on a few new schemas
      
       - Drop unnecessary type references on Xilinx SPI binding schema
      
      * tag 'devicetree-fixes-for-5.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
        spi: dt-bindings: xilinx: Drop type reference on *-bits properties
        dt-bindings: More use 'enum' instead of 'oneOf' plus 'const' entries
        of: property: Disable fw_devlink DT support for X86
      a1406e42
    • Linus Torvalds's avatar
      Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux · 2aae0a93
      Linus Torvalds authored
      Pull clk fix from Stephen Boyd:
       "One patch to fix an unused variable warning in a Qualcomm clk driver"
      
      * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
        clk: qcom: gcc-sm6350: Remove unused variable
      2aae0a93
    • Linus Torvalds's avatar
      Merge tag 'rtc-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux · 107ccc45
      Linus Torvalds authored
      Pull RTC updates from Alexandre Belloni:
       "The broken down time conversion is similar to what is done in the time
        subsystem since v5.14. The rest is fairly straightforward.
      
        Subsystem:
         - Switch to Neri and Schneider time conversion algorithm
      
        Drivers:
         - rx8025: add rx8035 support
         - s5m: modernize driver and set range"
      
      * tag 'rtc-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
        rtc: rx8010: select REGMAP_I2C
        dt-bindings: rtc: add Epson RX-8025 and RX-8035
        rtc: rx8025: implement RX-8035 support
        rtc: cmos: remove stale REVISIT comments
        rtc: tps65910: Correct driver module alias
        rtc: move RTC_LIB_KUNIT_TEST to proper location
        rtc: lib_test: add MODULE_LICENSE
        rtc: Improve performance of rtc_time64_to_tm(). Add tests.
        rtc: s5m: set range
        rtc: s5m: enable wakeup only when available
        rtc: s5m: signal the core when alarm are not available
        rtc: s5m: switch to devm_rtc_allocate_device
      107ccc45
    • Linus Torvalds's avatar
      Merge tag 'firewire-update' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394 · 52926229
      Linus Torvalds authored
      Pull firewire updates from Stefan Richter:
      
       - Migrate the bus snooper driver 'nosy' from PCI to DMA API
      
       - Small janitorial cleanup in the IPv4/v6-over-1394 driver
      
      [ The 'nosy' change already come in as a different commit through Greg
        KH in the misc tree back in the previous merge window, so only the
        cleanup ends up being new to 5.15   - Linus ]
      
      * tag 'firewire-update' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
        firewire: nosy: switch from 'pci_' to 'dma_' API
        firewire: net: remove unused variable 'guid'
      52926229
    • Linus Torvalds's avatar
      Merge tag 'pwm/for-5.15-rc1' of... · 6701e7e7
      Linus Torvalds authored
      Merge tag 'pwm/for-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
      
      Pull pwm updates from Thierry Reding:
       "The changes this time around are mostly janitorial in nature. A lot of
        this is simplifications of drivers using device-managed functions and
        improving compilation coverage.
      
        The Mediatek display PWM driver now supports the atomic API.
      
        Cleanups and minor fixes make up the remainder of this set"
      
      * tag 'pwm/for-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (54 commits)
        pwm: mtk-disp: Implement atomic API .get_state()
        pwm: mtk-disp: Fix overflow in period and duty calculation
        pwm: mtk-disp: Implement atomic API .apply()
        pwm: mtk-disp: Adjust the clocks to avoid them mismatch
        dt-bindings: pwm: rockchip: Add description for rk3568
        pwm: Make pwmchip_remove() return void
        pwm: sun4i: Don't check the return code of pwmchip_remove()
        pwm: sifive: Don't check the return code of pwmchip_remove()
        pwm: samsung: Don't check the return code of pwmchip_remove()
        pwm: renesas-tpu: Don't check the return code of pwmchip_remove()
        pwm: rcar: Don't check the return code of pwmchip_remove()
        pwm: pca9685: Don't check the return code of pwmchip_remove()
        pwm: omap-dmtimer: Don't check the return code of pwmchip_remove()
        pwm: mtk-disp: Don't check the return code of pwmchip_remove()
        pwm: imx-tpm: Don't check the return code of pwmchip_remove()
        pwm: img: Don't check the return code of pwmchip_remove()
        pwm: cros-ec: Don't check the return code of pwmchip_remove()
        pwm: brcmstb: Don't check the return code of pwmchip_remove()
        pwm: atmel-tcb: Don't check the return code of pwmchip_remove()
        pwm: atmel-hlcdc: Don't check the return code of pwmchip_remove()
        ...
      6701e7e7
    • Linus Torvalds's avatar
      Merge tag 'thermal-v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux · dd470387
      Linus Torvalds authored
      Pull thermal updates from Daniel Lezcano:
      
       - Add the tegra3 thermal sensor and fix the compilation testing on
         tegra by adding a dependency on ARCH_TEGRA along with COMPILE_TEST
         (Dmitry Osipenko)
      
       - Fix the error code for the exynos when devm_get_clk() fails (Dan
         Carpenter)
      
       - Add the TCC cooling support for AlderLake platform (Sumeet Pawnikar)
      
       - Add support for hardware trip points for the rcar gen3 thermal driver
         and store TSC id as unsigned int (Niklas Söderlund)
      
       - Replace the deprecated CPU-hotplug functions get_online_cpus() and
         put_online_cpus (Sebastian Andrzej Siewior)
      
       - Add the thermal tools directory in the MAINTAINERS file (Daniel
         Lezcano)
      
       - Fix the Makefile and the cross compilation flags for the userspace
         'tmon' tool (Rolf Eike Beer)
      
       - Allow to use the IMOK independently from the GDDV on Int340x (Sumeet
         Pawnikar)
      
       - Fix the stub thermal_cooling_device_register() f...
      dd470387