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Commits on Aug 10, 2021

  1. platform/x86: acer-wmi: Add Turbo Mode support for Acer PH315-53

    Hi,
    
    The Acer Predator Helios series (usually denoted by PHxxx-yy) features
    a special key above the keyboard named "TURBO". The turbo key does 3
    things:
    1. Set all fan's speeds to TURBO mode
    2. Overclocks the CPU and GPU in the safe range
    3. Turn on an LED just below the turbo button
    
    All of these actions are done by WMI function calls, and there is no
    custom OC level for turbo. It acts as a flag for enabling turbo
    mode instead of telling processors to use 1.3x of power.
    
    I've run some benchmark tests and it worked fine:
    
    GpuTest 0.7.0
    http://www.geeks3d.com
    
    Module: FurMark
    Normal mode Score: 7289 points (FPS: 121)
    Turbo mode Score: 7675 points (FPS: 127)
    Settings:
    - 1920x1080 fullscreen
    - antialiasing: Off
    - duration: 60000 ms
    
    Renderer:
    - GeForce RTX 2060/PCIe/SSE2
    - OpenGL: 4.6.0 NVIDIA 460.32.03
    
    This feature is presented by Acer officially and should not harm
    hardware in any case.
    
    A challenging part of implementing this feature is that calling
    overclocking the function requires knowing the exact count of fans for CPU
    and GPU for each model, which to the best of my knowledge is not
    available in the kernel.
    
    So after checking the official PredatorSense application methods, it
    turned out they have provided the software the list of fans in each model.
    I have access to the mentioned list, and all similar PH-iii-jj can be
    added easily by matching "DMI_PRODUCT_NAME".
    
    Creating a separate file for the gaming interface was not possible because
    the current WMI event GUID is needed for the turbo button, and it's not
    possible to register multiple functions on the same event GUID.
    
    Signed-off-by: JafarAkhondali <jafar.akhoondali@gmail.com>
    JafarAkhondali authored and intel-lab-lkp committed Aug 10, 2021
  2. Merge tag 'platform-drivers-x86-v5.14-3' of git://git.kernel.org/pub/…

    …scm/linux/kernel/git/pdx86/platform-drivers-x86
    
    Pull x86 platform driver fixes from Hans de Goede:
     "Small set of pdx86 fixes for 5.14"
    
    * tag 'platform-drivers-x86-v5.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
      platform/x86: pcengines-apuv2: Add missing terminating entries to gpio-lookup tables
      platform/x86: Make dual_accel_detect() KIOX010A + KIOX020A detect more robust
      platform/x86: Add and use a dual_accel_detect() helper
    torvalds committed Aug 10, 2021
  3. Merge tag 'ovl-fixes-5.14-rc6-v2' of git://git.kernel.org/pub/scm/lin…

    …ux/kernel/git/mszeredi/vfs
    
    Pull overlayfs fixes from Miklos Szeredi:
     "Fix several bugs in overlayfs"
    
    * tag 'ovl-fixes-5.14-rc6-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
      ovl: prevent private clone if bind mount is not allowed
      ovl: fix uninitialized pointer read in ovl_lookup_real_one()
      ovl: fix deadlock in splice write
      ovl: skip stale entries in merge dir cache iteration
    torvalds committed Aug 10, 2021
  4. ovl: prevent private clone if bind mount is not allowed

    Add the following checks from __do_loopback() to clone_private_mount() as
    well:
    
     - verify that the mount is in the current namespace
    
     - verify that there are no locked children
    
    Reported-by: Alois Wohlschlager <alois1@gmx-topmail.de>
    Fixes: c771d68 ("vfs: introduce clone_private_mount()")
    Cc: <stable@vger.kernel.org> # v3.18
    Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
    Miklos Szeredi committed Aug 10, 2021
  5. ovl: fix uninitialized pointer read in ovl_lookup_real_one()

    One error path can result in release_dentry_name_snapshot() being called
    before "name" was initialized by take_dentry_name_snapshot().
    
    Fix by moving the release_dentry_name_snapshot() to immediately after the
    only use.
    
    Reported-by: Colin Ian King <colin.king@canonical.com>
    Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
    Miklos Szeredi committed Aug 10, 2021
  6. ovl: fix deadlock in splice write

    There's possibility of an ABBA deadlock in case of a splice write to an
    overlayfs file and a concurrent splice write to a corresponding real file.
    
    The call chain for splice to an overlay file:
    
     -> do_splice                     [takes sb_writers on overlay file]
       -> do_splice_from
         -> iter_file_splice_write    [takes pipe->mutex]
           -> vfs_iter_write
             ...
             -> ovl_write_iter        [takes sb_writers on real file]
    
    And the call chain for splice to a real file:
    
     -> do_splice                     [takes sb_writers on real file]
       -> do_splice_from
         -> iter_file_splice_write    [takes pipe->mutex]
    
    Syzbot successfully bisected this to commit 82a763e ("ovl: simplify
    file splice").
    
    Fix by reverting the write part of the above commit and by adding missing
    bits from ovl_write_iter() into ovl_splice_write().
    
    Fixes: 82a763e ("ovl: simplify file splice")
    Reported-and-tested-by: syzbot+579885d1a9a833336209@syzkaller.appspotmail.com
    Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
    Miklos Szeredi committed Aug 10, 2021
  7. ovl: skip stale entries in merge dir cache iteration

    On the first getdents call, ovl_iterate() populates the readdir cache
    with a list of entries, but for upper entries with origin lower inode,
    p->ino remains zero.
    
    Following getdents calls traverse the readdir cache list and call
    ovl_cache_update_ino() for entries with zero p->ino to lookup the entry
    in the overlay and return d_ino that is consistent with st_ino.
    
    If the upper file was unlinked between the first getdents call and the
    getdents call that lists the file entry, ovl_cache_update_ino() will not
    find the entry and fall back to setting d_ino to the upper real st_ino,
    which is inconsistent with how this object was presented to users.
    
    Instead of listing a stale entry with inconsistent d_ino, simply skip
    the stale entry, which is better for users.
    
    xfstest overlay/077 is failing without this patch.
    
    Signed-off-by: Amir Goldstein <amir73il@gmail.com>
    Link: https://lore.kernel.org/fstests/CAOQ4uxgR_cLnC_vdU5=seP3fwqVkuZM_-WfD6maFTMbMYq=a9w@mail.gmail.com/
    Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
    amir73il authored and Miklos Szeredi committed Aug 10, 2021

Commits on Aug 9, 2021

  1. Merge branch 'for-5.14-fixes' of git://git.kernel.org/pub/scm/linux/k…

    …ernel/git/tj/cgroup
    
    Pull cgroup fix from Tejun Heo:
     "One commit to fix a possible A-A deadlock around u64_stats_sync on
      32bit machines caused by updating it without disabling IRQ when it may
      be read from IRQ context"
    
    * 'for-5.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
      cgroup: rstat: fix A-A deadlock on 32bit around u64_stats_sync
    torvalds committed Aug 9, 2021

Commits on Aug 8, 2021

  1. Linux 5.14-rc5

    torvalds committed Aug 8, 2021
  2. Merge tag 'timers-urgent-2021-08-08' of git://git.kernel.org/pub/scm/…

    …linux/kernel/git/tip/tip
    
    Pull timer fix from Thomas Gleixner:
     "A single timer fix:
    
       - Prevent a memory ordering issue in the timer expiry code which
         makes it possible to observe falsely that the callback has been
         executed already while that's not the case, which violates the
         guarantee of del_timer_sync()"
    
    * tag 'timers-urgent-2021-08-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
      timers: Move clearing of base::timer_running under base:: Lock
    torvalds committed Aug 8, 2021
  3. Merge tag 'sched-urgent-2021-08-08' of git://git.kernel.org/pub/scm/l…

    …inux/kernel/git/tip/tip
    
    Pull scheduler fix from Thomas Gleixner:
     "A single scheduler fix:
    
       - Prevent a double enqueue caused by rt_effective_prio() being
         invoked twice in __sched_setscheduler()"
    
    * tag 'sched-urgent-2021-08-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
      sched/rt: Fix double enqueue caused by rt_effective_prio
    torvalds committed Aug 8, 2021
  4. Merge tag 'perf-urgent-2021-08-08' of git://git.kernel.org/pub/scm/li…

    …nux/kernel/git/tip/tip
    
    Pull perf fixes from Thomas Gleixner:
     "A set of perf fixes:
    
       - Correct the permission checks for perf event which send SIGTRAP to
         a different process and clean up that code to be more readable.
    
       - Prevent an out of bound MSR access in the x86 perf code which
         happened due to an incomplete limiting to the actually available
         hardware counters.
    
       - Prevent access to the AMD64_EVENTSEL_HOSTONLY bit when running
         inside a guest.
    
       - Handle small core counter re-enabling correctly by issuing an ACK
         right before reenabling it to prevent a stale PEBS record being
         kept around"
    
    * tag 'perf-urgent-2021-08-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
      perf/x86/intel: Apply mid ACK for small core
      perf/x86/amd: Don't touch the AMD64_EVENTSEL_HOSTONLY bit inside the guest
      perf/x86: Fix out of bound MSR access
      perf: Refactor permissions check into perf_check_permission()
      perf: Fix required permissions if sigtrap is requested
    torvalds committed Aug 8, 2021
  5. Merge tag 'char-misc-5.14-rc5' of git://git.kernel.org/pub/scm/linux/…

    …kernel/git/gregkh/char-misc
    
    Pull char/misc driver fixes from Greg KH:
     "Here are some small char/misc driver fixes for 5.14-rc5.
    
      They resolve a few regressions that people reported:
    
       - acrn driver fix
    
       - fpga driver fix
    
       - interconnect tiny driver fixes
    
      All have been in linux-next for a while with no reported issues"
    
    * tag 'char-misc-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
      interconnect: Fix undersized devress_alloc allocation
      interconnect: qcom: icc-rpmh: Add BCMs to commit list in pre_aggregate
      interconnect: qcom: icc-rpmh: Ensure floor BW is enforced for all nodes
      fpga: dfl: fme: Fix cpu hotplug issue in performance reporting
      virt: acrn: Do hcall_destroy_vm() before resource release
      interconnect: Always call pre_aggregate before aggregate
      interconnect: Zero initial BW after sync-state
    torvalds committed Aug 8, 2021
  6. Merge tag 'driver-core-5.14-rc5' of git://git.kernel.org/pub/scm/linu…

    …x/kernel/git/gregkh/driver-core
    
    Pull driver core fixes from Greg KH:
     "Here are three tiny driver core and firmware loader fixes for
      5.14-rc5. They are:
    
       - driver core fix for when probing fails
    
       - firmware loader fixes for reported problems.
    
      All have been in linux-next for a while with no reported issues"
    
    * tag 'driver-core-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
      firmware_loader: fix use-after-free in firmware_fallback_sysfs
      firmware_loader: use -ETIMEDOUT instead of -EAGAIN in fw_load_sysfs_fallback
      drivers core: Fix oops when driver probe fails
    torvalds committed Aug 8, 2021
  7. Merge tag 'staging-5.14-rc5' of git://git.kernel.org/pub/scm/linux/ke…

    …rnel/git/gregkh/staging
    
    Pull staging driver fixes from Greg KH:
     "Here are a few small staging driver fixes for 5.14-rc5 to resolve some
      reported problems. They include:
    
       - mt7621 driver fix
    
       - rtl8723bs driver fixes
    
       - rtl8712 driver fixes.
    
      Nothing major, just small problems resolved.
    
      All have been in linux-next for a while with no reported issues"
    
    * tag 'staging-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
      staging: mt7621-pci: avoid to re-disable clock for those pcies not in use
      staging: rtl8712: error handling refactoring
      staging: rtl8712: get rid of flush_scheduled_work
      staging: rtl8723bs: select CONFIG_CRYPTO_LIB_ARC4
      staging: rtl8723bs: Fix a resource leak in sd_int_dpc
    torvalds committed Aug 8, 2021
  8. Merge tag 'tty-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel…

    …/git/gregkh/tty
    
    Pull tty/serial fixes from Greg KH:
     "Here are some small tty/serial driver fixes for 5.14-rc5 to resolve a
      number of reported problems.
    
      They include:
    
       - mips serial driver fixes
    
       - 8250 driver fixes for reported problems
    
       - fsl_lpuart driver fixes
    
       - other tiny driver fixes
    
      All have been in linux-next for a while with no reported problems"
    
    * tag 'tty-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
      serial: 8250_pci: Avoid irq sharing for MSI(-X) interrupts.
      serial: 8250_mtk: fix uart corruption issue when rx power off
      tty: serial: fsl_lpuart: fix the wrong return value in lpuart32_get_mctrl
      serial: 8250_pci: Enumerate Elkhart Lake UARTs via dedicated driver
      serial: 8250: fix handle_irq locking
      serial: tegra: Only print FIFO error message when an error occurs
      MIPS: Malta: Do not byte-swap accesses to the CBUS UART
      serial: 8250: Mask out floating 16/32-bit bus bits
      serial: max310x: Unprepare and disable clock in error path
    torvalds committed Aug 8, 2021
  9. Merge tag 'usb-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel…

    …/git/gregkh/usb
    
    Pull USB driver fixes from Greg KH:
     "Here are some small USB driver fixes for 5.14-rc5. They resolve a
      number of small reported issues, including:
    
       - cdnsp driver fixes
    
       - usb serial driver fixes and device id updates
    
       - usb gadget hid fixes
    
       - usb host driver fixes
    
       - usb dwc3 driver fixes
    
       - other usb gadget driver fixes
    
      All of these have been in linux-next for a while with no reported
      issues"
    
    * tag 'usb-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (21 commits)
      usb: typec: tcpm: Keep other events when receiving FRS and Sourcing_vbus events
      usb: dwc3: gadget: Avoid runtime resume if disabling pullup
      usb: dwc3: gadget: Use list_replace_init() before traversing lists
      USB: serial: ftdi_sio: add device ID for Auto-M3 OP-COM v2
      USB: serial: pl2303: fix GT type detection
      USB: serial: option: add Telit FD980 composition 0x1056
      USB: serial: pl2303: fix HX type detection
      USB: serial: ch341: fix character loss at high transfer rates
      usb: cdnsp: Fix the IMAN_IE_SET and IMAN_IE_CLEAR macro
      usb: cdnsp: Fixed issue with ZLP
      usb: cdnsp: Fix incorrect supported maximum speed
      usb: cdns3: Fixed incorrect gadget state
      usb: gadget: f_hid: idle uses the highest byte for duration
      Revert "thunderbolt: Hide authorized attribute if router does not support PCIe tunnels"
      usb: otg-fsm: Fix hrtimer list corruption
      usb: host: ohci-at91: suspend/resume ports after/before OHCI accesses
      usb: musb: Fix suspend and resume issues for PHYs on I2C and SPI
      usb: gadget: f_hid: added GET_IDLE and SET_IDLE handlers
      usb: gadget: f_hid: fixed NULL pointer dereference
      usb: gadget: remove leaked entry from udc driver list
      ...
    torvalds committed Aug 8, 2021

Commits on Aug 7, 2021

  1. Merge tag 'io_uring-5.14-2021-08-07' of git://git.kernel.dk/linux-block

    Pull io_uring from Jens Axboe:
     "A few io-wq related fixes:
    
       - Fix potential nr_worker race and missing max_workers check from one
         path (Hao)
    
       - Fix race between worker exiting and new work queue (me)"
    
    * tag 'io_uring-5.14-2021-08-07' of git://git.kernel.dk/linux-block:
      io-wq: fix lack of acct->nr_workers < acct->max_workers judgement
      io-wq: fix no lock protection of acct->nr_worker
      io-wq: fix race between worker exiting and activating free worker
    torvalds committed Aug 7, 2021
  2. Merge tag 'block-5.14-2021-08-07' of git://git.kernel.dk/linux-block

    Pull block fixes from Jens Axboe:
     "A few minor fixes:
    
       - Fix ldm kernel-doc warning (Bart)
    
       - Fix adding offset twice for DMA address in n64cart (Christoph)
    
       - Fix use-after-free in dasd path handling (Stefan)
    
       - Order kyber insert trace correctly (Vincent)
    
       - raid1 errored write handling fix (Wei)
    
       - Fix blk-iolatency queue get failure handling (Yu)"
    
    * tag 'block-5.14-2021-08-07' of git://git.kernel.dk/linux-block:
      kyber: make trace_block_rq call consistent with documentation
      block/partitions/ldm.c: Fix a kernel-doc warning
      blk-iolatency: error out if blk_get_queue() failed in iolatency_set_limit()
      n64cart: fix the dma address in n64cart_do_bvec
      s390/dasd: fix use after free in dasd path handling
      md/raid10: properly indicate failure when ending a failed write request
    torvalds committed Aug 7, 2021
  3. Merge tag 'riscv-for-linus-5.14-rc5' of git://git.kernel.org/pub/scm/…

    …linux/kernel/git/riscv/linux
    
    Pull RISC-V fixes from Palmer Dabbelt:
    
     - avoid dereferencing a null task pointer while walking the stack
    
     - fix the memory size in the HiFive Unleashed device tree
    
     - disable stack protectors when randstruct is enabled, which results in
       non-deterministic offsets during module builds
    
     - a pair of fixes to avoid relying on a constant physical memory base
       for the non-XIP builds
    
    * tag 'riscv-for-linus-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
      Revert "riscv: Remove CONFIG_PHYS_RAM_BASE_FIXED"
      riscv: Get rid of CONFIG_PHYS_RAM_BASE in kernel physical address conversion
      riscv: Disable STACKPROTECTOR_PER_TASK if GCC_PLUGIN_RANDSTRUCT is enabled
      riscv: dts: fix memory size for the SiFive HiFive Unmatched
      riscv: stacktrace: Fix NULL pointer dereference
    torvalds committed Aug 7, 2021
  4. Merge tag 'kbuild-fixes-v5.14-2' of git://git.kernel.org/pub/scm/linu…

    …x/kernel/git/masahiroy/linux-kbuild
    
    Pull Kbuild fixes from Masahiro Yamada:
    
     - Correct the Extended Regular Expressions in tools
    
     - Adjust scripts/checkversion.pl for the current Kbuild
    
     - Unset sub_make_done for 'make install' to make DKMS work again
    
    * tag 'kbuild-fixes-v5.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
      kbuild: cancel sub_make_done for the install target to fix DKMS
      scripts: checkversion: modernize linux/version.h search strings
      mips: Fix non-POSIX regexp
      x86/tools/relocs: Fix non-POSIX regexp
    torvalds committed Aug 7, 2021
  5. Revert "riscv: Remove CONFIG_PHYS_RAM_BASE_FIXED"

    This reverts commit 9b79878.
    
    The removal of this config exposes CONFIG_PHYS_RAM_BASE for all kernel
    types: this value being implementation-specific, this breaks the
    genericity of the RISC-V kernel so revert it.
    
    Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
    Tested-by: Emil Renner Berthing <kernel@esmil.dk>
    Reviewed-by: Jisheng Zhang <jszhang@kernel.org>
    Cc: stable@vger.kernel.org
    Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
    AlexGhiti authored and palmer-dabbelt committed Aug 7, 2021
  6. riscv: Get rid of CONFIG_PHYS_RAM_BASE in kernel physical address con…

    …version
    
    The usage of CONFIG_PHYS_RAM_BASE for all kernel types was a mistake:
    this value is implementation-specific and this breaks the genericity of
    the RISC-V kernel.
    
    Fix this by introducing a new variable phys_ram_base that holds this
    value at runtime and use it in the kernel physical address conversion
    macro. Since this value is used only for XIP kernels, evaluate it only if
    CONFIG_XIP_KERNEL is set which in addition optimizes this macro for
    standard kernels at compile-time.
    
    Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
    Tested-by: Emil Renner Berthing <kernel@esmil.dk>
    Reviewed-by: Jisheng Zhang <jszhang@kernel.org>
    Fixes: 44c9225 ("RISC-V: enable XIP")
    Cc: stable@vger.kernel.org
    Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
    AlexGhiti authored and palmer-dabbelt committed Aug 7, 2021

Commits on Aug 6, 2021

  1. kyber: make trace_block_rq call consistent with documentation

    The kyber ioscheduler calls trace_block_rq_insert() *after* the request
    is added to the queue but the documentation for trace_block_rq_insert()
    says that the call should be made *before* the request is added to the
    queue.  Move the tracepoint for the kyber ioscheduler so that it is
    consistent with the documentation.
    
    Signed-off-by: Vincent Fu <vincent.fu@samsung.com>
    Link: https://lore.kernel.org/r/20210804194913.10497-1-vincent.fu@samsung.com
    Reviewed by: Adam Manzanares <a.manzanares@samsung.com>
    Signed-off-by: Jens Axboe <axboe@kernel.dk>
    vincentkfu authored and axboe committed Aug 6, 2021
  2. Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/lin…

    …ux/kernel/git/tytso/ext4
    
    Pull ext4 fixes from Ted Ts'o:
     "A regression fix, bug fix, and a comment cleanup for ext4"
    
    * tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
      ext4: fix potential htree corruption when growing large_dir directories
      ext4: remove conflicting comment from __ext4_forget
      ext4: fix potential uninitialized access to retval in kmmpd
    torvalds committed Aug 6, 2021
  3. Merge tag 'trace-v5.14-rc4-2' of git://git.kernel.org/pub/scm/linux/k…

    …ernel/git/rostedt/linux-trace
    
    Pull tracing fixes from Steven Rostedt:
     "Fix tracepoint race between static_call and callback data
    
      As callbacks to a tracepoint are paired with the data that is passed
      in when the callback is registered to the tracepoint, it must have
      that data passed to the callback when the tracepoint is triggered,
      else bad things will happen. To keep the two together, they are both
      assigned to a tracepoint structure and added to an array. The
      tracepoint call site will dereference the structure (via RCU) and call
      the callback in that structure along with the data in that structure.
      This keeps the callback and data tightly coupled.
    
      Because of the overhead that retpolines have on tracepoint callbacks,
      if there's only one callback attached to a tracepoint (a common case),
      then it is called via a static call (code modified to do a direct call
      instead of an indirect call). But to implement this, the data had to
      be decoupled from the callback, as now the callback is implemented via
      a direct call from the static call and not an indirect call from the
      dereferenced structure.
    
      Note, the static call only calls a callback used when there's a single
      callback attached to the tracepoint. If more than one callback is
      attached to the same tracepoint, then the static call will call an
      iterator function that goes back to dereferencing the structure
      keeping the callback and its data tightly coupled again.
    
      Issues can arise when going from 0 callbacks to one, as the static
      call is assigned to the callback, and it must take care that the data
      passed to it is loaded before the static call calls the callback.
      Going from 1 to 2 callbacks is not an issue, as long as the static
      call is updated to the iterator before the tracepoint structure array
      is updated via RCU. Going from 2 to more or back down to 2 is not an
      issue as the iterator can handle all theses cases. But going from 2 to
      1, care must be taken as the static call is now calling a callback and
      the data that is loaded must be the data for that callback.
    
      Care was taken to ensure the callback and data would be in-sync, but
      after a bug was reported, it became clear that not enough was done to
      make sure that was the case. These changes address this.
    
      The first change is to compare the old and new data instead of the old
      and new callback, as it's the data that can corrupt the callback, even
      if the callback is the same (something getting freed).
    
      The next change is to convert these transitions into states, to make
      it easier to know when a synchronization is needed, and to perform
      those synchronizations. The problem with this patch is that it slows
      down disabling all events from under a second, to making it take over
      10 seconds to do the same work. But that is addressed in the final
      patch.
    
      The final patch uses the RCU state functions to keep track of the RCU
      state between the transitions, and only needs to perform the
      synchronization if an RCU synchronization hasn't been done already.
      This brings the performance of disabling all events back to its
      original value. That's because no synchronization is required between
      disabling tracepoints but is required when enabling a tracepoint after
      its been disabled. If an RCU synchronization happens after the
      tracepoint is disabled, and before it is re-enabled, there's no need
      to do the synchronization again.
    
      Both the second and third patch have subtle complexities that they are
      separated into two patches. But because the second patch causes such a
      regression in performance, the third patch adds a "Fixes" tag to the
      second patch, such that the two must be backported together and not
      just the second patch"
    
    * tag 'trace-v5.14-rc4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
      tracepoint: Use rcu get state and cond sync for static call updates
      tracepoint: Fix static call function vs data state mismatch
      tracepoint: static call: Compare data on transition from 2->1 callees
    torvalds committed Aug 6, 2021
  4. Merge tag 'pm-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/…

    …git/rafael/linux-pm
    
    Pull power management fixes from Rafael Wysocki:
     "Fix a recent regression in the timer events oriented (TEO) cpuidle
      governor causing it to misbehave when idle state 0 is disabled and
      rename two local variables for improved clarity on top of that"
    
    * tag 'pm-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
      cpuidle: teo: Rename two local variables in teo_select()
      cpuidle: teo: Fix alternative idle state lookup
    torvalds committed Aug 6, 2021
  5. Merge tag 'acpi-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kerne…

    …l/git/rafael/linux-pm
    
    Pull ACPI fix from Rafael Wysocki:
     "Revert a recent ACPICA commit causing boot issues to appear on some
      systems"
    
    * tag 'acpi-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
      Revert "ACPICA: Fix memory leak caused by _CID repair function"
    torvalds committed Aug 6, 2021
  6. Merge tag 'soc-fixes-5.14-2' of git://git.kernel.org/pub/scm/linux/ke…

    …rnel/git/soc/soc
    
    Pull ARM SoC fixes from Arnd Bergmann:
     "Lots of small fixes for Arm SoCs this time, nothing too worrying:
    
       - omap/beaglebone boot regression fix in gpt12 timer
    
       - revert for i.mx8 soc driver breaking as a platform_driver
    
       - kexec/kdump fixes for op-tee
    
       - various fixes for incorrect DT settings on imx, mvebu, omap, stm32,
         and tegra causing problems.
    
       - device tree fixes for static checks in nomadik, versatile, stm32
    
       - code fixes for issues found in build testing and with static
         checking on tegra, ixp4xx, imx, omap"
    
    * tag 'soc-fixes-5.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (36 commits)
      soc: ixp4xx/qmgr: fix invalid __iomem access
      soc: ixp4xx: fix printing resources
      ARM: ixp4xx: goramo_mlr depends on old PCI driver
      ARM: ixp4xx: fix compile-testing soc drivers
      soc/tegra: Make regulator couplers depend on CONFIG_REGULATOR
      ARM: dts: nomadik: Fix up interrupt controller node names
      ARM: dts: stm32: Fix touchscreen IRQ line assignment on DHCOM
      ARM: dts: stm32: Disable LAN8710 EDPD on DHCOM
      ARM: dts: stm32: Prefer HW RTC on DHCOM SoM
      omap5-board-common: remove not physically existing vdds_1v8_main fixed-regulator
      ARM: dts: am437x-l4: fix typo in can@0 node
      ARM: dts: am43x-epos-evm: Reduce i2c0 bus speed for tps65218
      bus: ti-sysc: AM3: RNG is GP only
      ARM: omap2+: hwmod: fix potential NULL pointer access
      arm64: dts: armada-3720-turris-mox: remove mrvl,i2c-fast-mode
      arm64: dts: armada-3720-turris-mox: fixed indices for the SDHC controllers
      ARM: dts: imx: Swap M53Menlo pinctrl_power_button/pinctrl_power_out pins
      ARM: imx: fix missing 3rd argument in macro imx_mmdc_perf_init
      ARM: dts: colibri-imx6ull: limit SDIO clock to 25MHz
      arm64: dts: ls1028: sl28: fix networking for variant 2
      ...
    torvalds committed Aug 6, 2021
  7. Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/…

    …git/arm64/linux
    
    Pull arm64 fixes from Will Deacon:
     "It's all pretty minor but the main fix is sorting out how we deal with
      return values from 32-bit system calls as audit expects error codes to
      be sign-extended to 64 bits
    
      Summary:
    
       - Fix extension/truncation of return values from 32-bit system calls
    
       - Fix interaction between unwinding and tracing
    
       - Fix spurious toolchain warning emitted during make
    
       - Fix Kconfig help text for RANDOMIZE_MODULE_REGION_FULL"
    
    * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
      arm64: stacktrace: avoid tracing arch_stack_walk()
      arm64: stacktrace: fix comment
      arm64: fix the doc of RANDOMIZE_MODULE_REGION_FULL
      arm64: move warning about toolchains to archprepare
      arm64: fix compat syscall return truncation
    torvalds committed Aug 6, 2021
  8. Merge tag 'mips-fixes_5.14_1' of git://git.kernel.org/pub/scm/linux/k…

    …ernel/git/mips/linux
    
    Pull MIPS fix from Thomas Bogendoerfer:
     "Fix PMD accounting change"
    
    * tag 'mips-fixes_5.14_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
      MIPS: check return value of pgtable_pmd_page_ctor
    torvalds committed Aug 6, 2021
  9. Merge tag 'spi-fix-v5.14-rc4' of git://git.kernel.org/pub/scm/linux/k…

    …ernel/git/broonie/spi
    
    Pull spi fixes from Mark Brown:
     "A small collection of fixes for SPI, small mostly driver specific
      things plus a fix for module autoloading which hadn't been working
      properly for DT systems"
    
    * tag 'spi-fix-v5.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
      spi: cadence-quadspi: Fix check condition for DTR ops
      spi: mediatek: Fix fifo transfer
      spi: imx: mx51-ecspi: Fix CONFIGREG delay comment
      spi: imx: mx51-ecspi: Fix low-speed CONFIGREG delay calculation
      spi: update modalias_show after of_device_uevent_modalias support
      spi: meson-spicc: fix memory leak in meson_spicc_remove
      spi: spi-mux: Add module info needed for autoloading
    torvalds committed Aug 6, 2021
  10. Merge tag 'dmaengine-fix-5.14' of git://git.kernel.org/pub/scm/linux/…

    …kernel/git/vkoul/dmaengine
    
    Pull dmaengine fixes from Vinod Koul:
     "A bunch of driver fixes, notably:
    
       - idxd driver fixes for submission race, driver remove sequence,
         setup sequence for MSIXPERM, array index and updating descriptor
         vector
    
       - usb-dmac, pm reference leak fix
    
       - xilinx_dma, read-after-free fix
    
       - uniphier-xdmac fix for using atomic readl_poll_timeout_atomic()
    
       - of-dma, router_xlate to return
    
       - imx-dma, generic dma fix"
    
    * tag 'dmaengine-fix-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
      dmaengine: imx-dma: configure the generic DMA type to make it work
      dmaengine: of-dma: router_xlate to return -EPROBE_DEFER if controller is not yet available
      dmaengine: stm32-dmamux: Fix PM usage counter unbalance in stm32 dmamux ops
      dmaengine: stm32-dma: Fix PM usage counter imbalance in stm32 dma ops
      dmaengine: uniphier-xdmac: Use readl_poll_timeout_atomic() in atomic state
      dmaengine: idxd: fix submission race window
      dmaengine: idxd: fix sequence for pci driver remove() and shutdown()
      dmaengine: idxd: fix desc->vector that isn't being updated
      dmaengine: idxd: fix setup sequence for MSIXPERM table
      dmaengine: idxd: fix array index when int_handles are being used
      dmaengine: usb-dmac: Fix PM reference leak in usb_dmac_probe()
      dmaengine: xilinx_dma: Fix read-after-free bug when terminating transfers
    torvalds committed Aug 6, 2021
  11. Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/gi…

    …t/rdma/rdma
    
    Pull rdma fixes from Jason Gunthorpe:
     "Several small recent regressions - rather more than usual, but nothing
      too scary. Good to know people are testing.
    
       - Typo causing incorrect operation of the mlx5 mkey cache
         expiration
    
       - Revert a CM patch that is breaking some ULPs
    
       - Typo breaking SRQ in rxe
    
       - Revert a rxe patch breaking icrc calculation
    
       - Static checker warning about unbalanced locking in hns
    
       - Subtle cxgb4 regression from a recent atomic to refcount
         conversion"
    
    * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
      RDMA/iw_cxgb4: Fix refcount underflow while destroying cqs.
      RDMA/hns: Fix the double unlock problem of poll_sem
      RDMA/rxe: Restore setting tot_len in the IPv4 header
      RDMA/rxe: Use the correct size of wqe when processing SRQ
      RDMA/cma: Revert INIT-INIT patch
      RDMA/mlx5: Delay emptying a cache entry when a new MR is added to it recently
    torvalds committed Aug 6, 2021
  12. Merge tag 'sound-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kern…

    …el/git/tiwai/sound
    
    Pull sound fixes from Takashi Iwai:
     "A collection of small fixes:
    
       - A few regression fixes (PCM core fixes, USB-audio fixes)
    
       - Follow up fixes for the USB-audio mixer changes in this cycle
    
       - A long-standing ALSA sequencer race bug fix
    
       - Usual device-specific quirks for HD- and USB-audio"
    
    * tag 'sound-5.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
      ALSA: seq: Fix racy deletion of subscriber
      ALSA: memalloc: Fix regression with SNDRV_DMA_TYPE_CONTINUOUS
      ALSA: pcm - fix mmap capability check for the snd-dummy driver
      ALSA: usb-audio: Avoid unnecessary or invalid connector selection at resume
      ALSA: hda/realtek: add mic quirk for Acer SF314-42
      ALSA: usb-audio: Add registration quirk for JBL Quantum 600
      ALSA: hda/realtek: Fix headset mic for Acer SWIFT SF314-56 (ALC256)
      ALSA: usb-audio: Fix superfluous autosuspend recovery
      ALSA: usb-audio: fix incorrect clock source setting
      ALSA: scarlett2: Fix line out/speaker switching notifications
      ALSA: scarlett2: Correct channel mute status after mute button pressed
      ALSA: scarlett2: Fix Direct Monitor control name for 2i2
      ALSA: scarlett2: Fix Mute/Dim/MSD Mode control names
    torvalds committed Aug 6, 2021
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