Pull driver core fixes from Greg KH:
 "Here are some small driver core and debugfs fixes for 6.0-rc5.

  Included in here are:

   - multiple attempts to get the arch_topology code to work properly on
     non-cluster SMT systems. First attempt caused build breakages in
     linux-next and 0-day, second try worked.

   - debugfs fixes for a long-suffering memory leak. The pattern of
     debugfs_remove(debugfs_lookup(...)) turns out to leak dentries, so
     add debugfs_lookup_and_remove() to fix this problem. Also fix up
     the scheduler debug code that highlighted this problem. Fixes for
     other subsystems will be trickling in over the next few months for
     this same issue once the debugfs function is merged.

  All of these have been in linux-next since Wednesday with no reported
  problems"

* tag 'driver-core-6.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  arch_topology: Make cluster topology span at least SMT CPUs
  sched/debug: fix dentry leak in update_sched_domain_debugfs
  debugfs: add debugfs_lookup_and_remove()
  driver core: fix driver_set_override() issue with empty strings
  Revert "arch_topology: Make cluster topology span at least SMT CPUs"
  arch_topology: Make cluster topology span at least SMT CPUs

Pull block fixes from Jens Axboe:

 - NVMe pull via Christoph:
      - fix a use after free in nvmet (Bart Van Assche)
      - fix a use after free when detecting digest errors
        (Sagi Grimberg)
      - fix regression that causes sporadic TCP requests to time out
        (Sagi Grimberg)
      - fix two off by ones errors in the nvmet ZNS support
        (Dennis Maisenbacher)
      - requeue aen after firmware activation (Keith Busch)

 - Fix missing request flags in debugfs code (me)

 - Partition scan fix (Ming)

* tag 'block-6.0-2022-09-09' of git://git.kernel.dk/linux-block:
  block: add missing request flags to debugfs code
  nvme: requeue aen after firmware activation
  nvmet: fix mar and mor off-by-one errors
  nvme-tcp: fix regression that causes sporadic requests to time out
  nvme-tcp: fix UAF when detecting digest errors
  nvmet: fix a use-after-free
  block: don't add partitions if GD_SUPPRESS_PART_SCAN is set

Pull io_uring fixes from Jens Axboe:

 - Removed function that became unused after last week's merge (Jiapeng)

 - Two small fixes for kbuf recycling (Pavel)

 - Include address copy for zc send for POLLFIRST (Pavel)

 - Fix for short IO handling in the normal read/write path (Pavel)

* tag 'io_uring-6.0-2022-09-09' of git://git.kernel.dk/linux-block:
  io_uring/rw: fix short rw error handling
  io_uring/net: copy addr for zc on POLL_FIRST
  io_uring: recycle kbuf recycle on tw requeue
  io_uring/kbuf: fix not advancing READV kbuf ring
  io_uring/notif: Remove the unused function io_notif_complete()

Pull rdma fixes from Jason Gunthorpe:
 "Many bug fixes in several drivers:

   - Fix misuse of the DMA API in rtrs

   - Several irdma issues: hung task due to SQ flushing, incorrect
     capability reporting to userspace, improper error handling for MW
     corners, touching an uninitialized SGL for during invalidation.

   - hns was using the wrong page size limits for the HW, an incorrect
     calculation of wqe_shift causing WQE corruption, and mis computed a
     timer id.

   - Fix a crash in SRP triggered by blktests

   - Fix compiler errors by calling virt_to_page() with the proper type
     in siw

   - Userspace triggerable deadlock in ODP

   - mlx5 could use the wrong profile due to some driver loading races,
     counters were not working in some device configurations, and a
     crash on error unwind"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/irdma: Report RNR NAK generation in device caps
  RDMA/irdma: Use s/g array in post send only when its valid
  RDMA/irdma: Return correct WC error for bind operation failure
  RDMA/irdma: Return error on MR deregister CQP failure
  RDMA/irdma: Report the correct max cqes from query device
  MAINTAINERS: Update maintainers of HiSilicon RoCE
  RDMA/mlx5: Fix UMR cleanup on error flow of driver init
  RDMA/mlx5: Set local port to one when accessing counters
  RDMA/mlx5: Rely on RoCE fw cap instead of devlink when setting profile
  IB/core: Fix a nested dead lock as part of ODP flow
  RDMA/siw: Pass a pointer to virt_to_page()
  RDMA/srp: Set scmnd->result only when scmnd is not NULL
  RDMA/hns: Remove the num_qpc_timer variable
  RDMA/hns: Fix wrong fixed value of qp->rq.wqe_shift
  RDMA/hns: Fix supported page size
  RDMA/cma: Fix arguments order in net device validation
  RDMA/irdma: Fix drain SQ hang with no completion
  RDMA/rtrs-srv: Pass the correct number of entries for dma mapped SGL
  RDMA/rtrs-clt: Use the right sg_cnt after ib_dma_map_sg

Pull drm fixes from Dave Airlie:
 "From a train in the Irish countryside, regular drm fixes for 6.0-rc5.

  This is mostly amdgpu/amdkfd and i915 fixes, then one panfrost, one
  ttm and one edid fix. Nothing too major going on. Hopefully a quiet
  week next week for LPC.

  edid:
   - Fix EDID 1.4 range-descriptor parsing

  ttm:
   - Fix ghost-object bulk moves

  i915:
   - Fix MIPI sequence block copy from BIOS' table
   - Fix PCODE min freq setup when GuC's SLPC is in use
   - Implement Workaround for eDP
   - Fix has_flat_ccs selection for DG1

  amdgpu:
   - Firmware header fix
   - SMU 13.x fix
   - Debugfs memory leak fix
   - NBIO 7.7 fix
   - Firmware memory leak fix

  amdkfd:
   - Debug output fix

  panfrost:
   - Fix devfreq OPP"

* tag 'drm-fixes-2022-09-10' of git://anongit.freedesktop.org/drm/drm:
  drm/panfrost: devfreq: set opp to the recommended one to configure regulator
  drm/ttm: cleanup the resource of ghost objects after locking them
  drm/amdgpu: prevent toc firmware memory leak
  drm/amdgpu: correct doorbell range/size value for CSDMA_DOORBELL_RANGE
  drm/amdkfd: print address in hex format rather than decimal
  drm/amd/display: fix memory leak when using debugfs_lookup()
  drm/amd/pm: add missing SetMGpuFanBoostLimitRpm mapping for SMU 13.0.7
  drm/amd/amdgpu: add rlc_firmware_header_v2_4 to amdgpu_firmware_header
  drm/i915: consider HAS_FLAT_CCS() in needs_ccs_pages
  drm/i915: Implement WaEdpLinkRateDataReload
  drm/i915/slpc: Let's fix the PCODE min freq table setup for SLPC
  drm/i915/bios: Copy the whole MIPI sequence block
  drm/ttm: update bulk move object of ghost BO
  drm/edid: Handle EDID 1.4 range descriptor h/vfreq offsets

Merge tag 'linux-kselftest-kunit-fixes-6.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull KUnit fixes from Shuah Khan:
 "Two fixes to test build and a fix for incorrect taint reason reporting"

* tag 'linux-kselftest-kunit-fixes-6.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  tools: Add new "test" taint to kernel-chktaint
  kunit: fix Kconfig for build-in tests USB4 and Nitro Enclaves
  kunit: fix assert_type for comparison macros

Pull RISC-V fixes from Palmer Dabbelt:

 - A pair of device tree fixes for the Polarfire SOC

 - A fix to avoid overflowing the PMU counter array when firmware
   incorrectly reports the number of supported counters, which manifests
   on OpenSBI versions prior to 1.1

* tag 'riscv-for-linus-6.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  perf: RISC-V: fix access beyond allocated array
  riscv: dts: microchip: use an mpfs specific l2 compatible
  dt-bindings: riscv: sifive-l2: add a PolarFire SoC compatible

Pull powerpc fix from Michael Ellerman:

 - Fix crashes on bare metal due to the new plkps driver trying to probe
   and call the hypervisor on non-pseries machines.

Thanks to Nathan Chancellor and Dan Horák.

* tag 'powerpc-6.0-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/pseries: Fix plpks crash on non-pseries

Merge tag 'drm-intel-fixes-2022-09-08' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

- Fix MIPI sequence block copy from BIOS' table. (Ville)
- Fix PCODE min freq setup when GuC's SLPC is in use. (Rodrigo)
- Implement Workaround for eDP. (Ville)
- Fix has_flat_ccs selection for DG1. (Matt)
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/Yxn1WpmUJnJpqq23@intel.com

Short summary of fixes pull:

 * edid: Fix EDID 1.4 range-descriptor parsing
 * panfrost: Fix devfreq OPP
 * ttm: Fix ghost-object bulk moves
Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/YxniKN4rK4qPp+J9@linux-uq9g

We have a couple of problems, first reports of unexpected link breakage
for reads when cqe->res indicates that the IO was done in full. The
reason here is partial IO with retries.

TL;DR; we compare the result in __io_complete_rw_common() against
req->cqe.res, but req->cqe.res doesn't store the full length but rather
the length left to be done. So, when we pass the full corrected result
via kiocb_done() -> __io_complete_rw_common(), it fails.

The second problem is that we don't try to correct res in
io_complete_rw(), which, for instance, might be a problem for O_DIRECT
but when a prefix of data was cached in the page cache. We also
definitely don't want to pass a corrected result into io_rw_done().

The fix here is to leave __io_complete_rw_common() alone, always pass
not corrected result into it and fix it up as the last step just before
actually finishing the I/O.

Cc: stable@vger.kernel.org
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://github.com/axboe/liburing/issues/643Reported-by: Beld Zhang <beldzhang@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

We're missing TIMED_OUT and RESV. Particularly the former is handy
for debugging, let's get them added.
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

Pull btrfs fixes from David Sterba:
 "A few more fixes to zoned mode and one regression fix for chunk limit:

    - Zoned mode fixes:
        - fix how wait/wake up is done when finishing zone
        - fix zone append limit in emulated mode
        - fix mount on devices with conventional zones

   - fix regression, user settable data chunk limit got accidentally
     lowered and causes allocation problems on some profiles (raid0,
     raid1)"

* tag 'for-6.0-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: fix the max chunk size and stripe length calculation
  btrfs: zoned: fix mounting with conventional zones
  btrfs: zoned: set pseudo max append zone limit in zone emulation mode
  btrfs: zoned: fix API misuse of zone finish waiting

Pull VFIO fix from Alex Williamson:

 - Fix zero page refcount leak (Alex Williamson)

* tag 'vfio-v6.0-rc5' of https://github.com/awilliam/linux-vfio:
  vfio/type1: Unpin zero pages

Pull sound fixes from Takashi Iwai:
 "Lots of small fixes for various drivers at this time, hopefully it
  will be the last big bump before 6.0 release.

  The significant changes are regression fixes for (yet again) HD-audio
  memory allocations and USB-audio PCM parameter handling, while there
  are many small ASoC device-specific fixes as well as a few
  out-of-bounds and race issues spotted by fuzzers"

* tag 'sound-6.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (29 commits)
  ALSA: usb-audio: Clear fixed clock rate at closing EP
  ALSA: emu10k1: Fix out of bounds access in snd_emu10k1_pcm_channel_alloc()
  ALSA: hda: Once again fix regression of page allocations with IOMMU
  ALSA: usb-audio: Fix an out-of-bounds bug in __snd_usb_parse_audio_interface()
  ALSA: hda/tegra: Align BDL entry to 4KB boundary
  ALSA: hda/sigmatel: Fix unused variable warning for beep power change
  ALSA: pcm: oss: Fix race at SNDCTL_DSP_SYNC
  ALSA: hda/sigmatel: Keep power up while beep is enabled
  ALSA: aloop: Fix random zeros in capture data when using jiffies timer
  ALSA: usb-audio: Split endpoint setups for hw_params and prepare
  ALSA: usb-audio: Register card again for iface over delayed_register option
  ALSA: usb-audio: Inform the delayed registration more properly
  ASoC: fsl_aud2htx: Add error handler for pm_runtime_enable
  ASoC: fsl_aud2htx: register platform component before registering cpu dai
  ASoC: SOF: ipc4-topology: fix alh_group_ida max value
  ASoC: mchp-spdiftx: Fix clang -Wbitfield-constant-conversion
  ASoC: SOF: Kconfig: Make IPC_MESSAGE_INJECTOR depend on SND_SOC_SOF
  ASoC: SOF: Kconfig: Make IPC_FLOOD_TEST depend on SND_SOC_SOF
  ASoC: fsl_mqs: Fix supported clock DAI format
  ASoC: nau8540: Implement hw constraint for rates
  ...

Merge tag 'perf-tools-fixes-for-v6.0-2022-09-08' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix per-thread mmaps for multi-threaded targets, noticed with
   'perf top --pid' with multithreaded targets

 - Fix synthesis failure warnings in 'perf record'

 - Fix L2 Topdown metrics disappearance for raw events in 'perf stat'

 - Fix out of bound access in some CPU masks

 - Fix segfault if there is no CPU PMU table and a metric is sought,
   noticed when building with NO_JEVENTS=1

 - Skip dummy event attr check in 'perf script' fixing nonsensical
   warning about UREGS attribute not set, as 'dummy' events have no
   samples

 - Fix 'iregs' field handling with dummy events on hybrid systems in
   'perf script'

 - Prevent potential memory leak in c2c_he_zalloc() in 'perf c2c'

 - Don't install data files with x permissions

 - Fix types for print format in dlfilter-show-cycles

 - Switch deprecated openssl MD5_* functions to new EVP API in 'genelf'

 - Remove redundant word 'contention' in 'perf lock' help message

* tag 'perf-tools-fixes-for-v6.0-2022-09-08' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf record: Fix synthesis failure warnings
  perf tools: Don't install data files with x permissions
  perf script: Fix Cannot print 'iregs' field for hybrid systems
  perf lock: Remove redundant word 'contention' in help message
  perf dlfilter dlfilter-show-cycles: Fix types for print format
  libperf evlist: Fix per-thread mmaps for multi-threaded targets
  perf c2c: Prevent potential memory leak in c2c_he_zalloc()
  perf genelf: Switch deprecated openssl MD5_* functions to new EVP API
  tools/perf: Fix out of bound access to cpu mask array
  perf affinity: Fix out of bound access to "sched_cpus" mask
  perf stat: Fix L2 Topdown metrics disappear for raw events
  perf script: Skip dummy event attr check
  perf metric: Return early if no CPU PMU table exists

Pull tracing fixes from Steven Rostedt:

 - Do not stop trace events in modules if TAINT_TEST is set

 - Do not clobber mount options when tracefs is mounted a second time

 - Prevent crash of kprobes in gate area

 - Add static annotation to some non global functions

 - Add some entries into the MAINTAINERS file

 - Fix check of event_mutex held when accessing trigger list

 - Add some __init/__exit annotations

 - Fix reporting of what called hardirq_{enable,disable}_ip function

* tag 'trace-v6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracefs: Only clobber mode/uid/gid on remount if asked
  kprobes: Prohibit probes in gate area
  rv/reactor: add __init/__exit annotations to module init/exit funcs
  tracing: Fix to check event_mutex is held while accessing trigger list
  tracing: hold caller_addr to hardirq_{enable,disable}_ip
  tracepoint: Allow trace events in modules with TAINT_TEST
  MAINTAINERS: add scripts/tracing/ to TRACING
  MAINTAINERS: Add Runtime Verification (RV) entry
  rv/monitors: Make monitor's automata definition static

Merge tag 'asm-generic-fixes-6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull SOFTIRQ_ON_OWN_STACK rework from Arnd Bergmann:
 "Just one fixup patch, reworking the softirq_on_own_stack logic for
  preempt-rt kernels as discussed in

    https://lore.kernel.org/all/CAHk-=wgZSD3W2y6yczad2Am=EfHYyiPzTn3CfXxrriJf9i5W5w@mail.gmail.com/"

* tag 'asm-generic-fixes-6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  asm-generic: Conditionally enable do_softirq_own_stack() via Kconfig.

Users may have explicitly configured their tracefs permissions; we
shouldn't overwrite those just because a second mount appeared.

Only clobber if the options were provided at mount time.

Note: the previous behavior was especially surprising in the presence of
automounted /sys/kernel/debug/tracing/.

Existing behavior:

  ## Pre-existing status: tracefs is 0755.
  # stat -c '%A' /sys/kernel/tracing/
  drwxr-xr-x

  ## (Re)trigger the automount.
  # umount /sys/kernel/debug/tracing
  # stat -c '%A' /sys/kernel/debug/tracing/.
  drwx------

  ## Unexpected: the automount changed mode for other mount instances.
  # stat -c '%A' /sys/kernel/tracing/
  drwx------

New behavior (after this change):

  ## Pre-existing status: tracefs is 0755.
  # stat -c '%A' /sys/kernel/tracing/
  drwxr-xr-x

  ## (Re)trigger the automount.
  # umount /sys/kernel/debug/tracing
  # stat -c '%A' /sys/kernel/debug/tracing/.
  drwxr-xr-x

  ## Expected: the automount does not change other mount instances.
  # stat -c '%A' /sys/kernel/tracing/
  drwxr-xr-x

Link: https://lkml.kernel.org/r/20220826174353.2.Iab6e5ea57963d6deca5311b27fb7226790d44406@changeid

Cc: stable@vger.kernel.org
Fixes: 4282d606 ("tracefs: Add new tracefs file system")
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

The system call gate area counts as kernel text but trying
to install a kprobe in this area fails with an Oops later on.
To fix this explicitly disallow the gate area for kprobes.

Found by syzkaller with the following reproducer:
perf_event_open$cgroup(&(0x7f00000001c0)={0x6, 0x80, 0x0, 0x0, 0x0, 0x0, 0x80ffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext={0x0, 0xffffffffff600000}}, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0)

Sample report:
BUG: unable to handle page fault for address: fffffbfff3ac6000
PGD 6dfcb067 P4D 6dfcb067 PUD 6df8f067 PMD 6de4d067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 PID: 21978 Comm: syz-executor.2 Not tainted 6.0.0-rc3-00363-g7726d4c3-dirty #6
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
RIP: 0010:__insn_get_emulate_prefix arch/x86/lib/insn.c:91 [inline]
RIP: 0010:insn_get_emulate_prefix arch/x86/lib/insn.c:106 [inline]
RIP: 0010:insn_get_prefixes.part.0+0xa8/0x1110 arch/x86/lib/insn.c:134
Code: 49 be 00 00 00 00 00 fc ff df 48 8b 40 60 48 89 44 24 08 e9 81 00 00 00 e8 e5 4b 39 ff 4c 89 fa 4c 89 f9 48 c1 ea 03 83 e1 07 <42> 0f b6 14 32 38 ca 7f 08 84 d2 0f 85 06 10 00 00 48 89 d8 48 89
RSP: 0018:ffffc900088bf860 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffffffff9b9bebc0 RCX: 0000000000000000
RDX: 1ffffffff3ac6000 RSI: ffffc90002d82000 RDI: ffffc900088bf9e8
RBP: ffffffff9d630001 R08: 0000000000000000 R09: ffffc900088bf9e8
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: ffffffff9d630000 R14: dffffc0000000000 R15: ffffffff9d630000
FS:  00007f63eef63640(0000) GS:ffff88806d000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff3ac6000 CR3: 0000000029d90005 CR4: 0000000000770ef0
PKRU: 55555554
Call Trace:
 <TASK>
 insn_get_prefixes arch/x86/lib/insn.c:131 [inline]
 insn_get_opcode arch/x86/lib/insn.c:272 [inline]
 insn_get_modrm+0x64a/0x7b0 arch/x86/lib/insn.c:343
 insn_get_sib+0x29a/0x330 arch/x86/lib/insn.c:421
 insn_get_displacement+0x350/0x6b0 arch/x86/lib/insn.c:464
 insn_get_immediate arch/x86/lib/insn.c:632 [inline]
 insn_get_length arch/x86/lib/insn.c:707 [inline]
 insn_decode+0x43a/0x490 arch/x86/lib/insn.c:747
 can_probe+0xfc/0x1d0 arch/x86/kernel/kprobes/core.c:282
 arch_prepare_kprobe+0x79/0x1c0 arch/x86/kernel/kprobes/core.c:739
 prepare_kprobe kernel/kprobes.c:1160 [inline]
 register_kprobe kernel/kprobes.c:1641 [inline]
 register_kprobe+0xb6e/0x1690 kernel/kprobes.c:1603
 __register_trace_kprobe kernel/trace/trace_kprobe.c:509 [inline]
 __register_trace_kprobe+0x26a/0x2d0 kernel/trace/trace_kprobe.c:477
 create_local_trace_kprobe+0x1f7/0x350 kernel/trace/trace_kprobe.c:1833
 perf_kprobe_init+0x18c/0x280 kernel/trace/trace_event_perf.c:271
 perf_kprobe_event_init+0xf8/0x1c0 kernel/events/core.c:9888
 perf_try_init_event+0x12d/0x570 kernel/events/core.c:11261
 perf_init_event kernel/events/core.c:11325 [inline]
 perf_event_alloc.part.0+0xf7f/0x36a0 kernel/events/core.c:11619
 perf_event_alloc kernel/events/core.c:12059 [inline]
 __do_sys_perf_event_open+0x4a8/0x2a00 kernel/events/core.c:12157
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f63ef7efaed
Code: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f63eef63028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f63ef90ff80 RCX: 00007f63ef7efaed
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 00000000200001c0
RBP: 00007f63ef86019c R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000002 R14: 00007f63ef90ff80 R15: 00007f63eef43000
 </TASK>
Modules linked in:
CR2: fffffbfff3ac6000
---[ end trace 0000000000000000 ]---
RIP: 0010:__insn_get_emulate_prefix arch/x86/lib/insn.c:91 [inline]
RIP: 0010:insn_get_emulate_prefix arch/x86/lib/insn.c:106 [inline]
RIP: 0010:insn_get_prefixes.part.0+0xa8/0x1110 arch/x86/lib/insn.c:134
Code: 49 be 00 00 00 00 00 fc ff df 48 8b 40 60 48 89 44 24 08 e9 81 00 00 00 e8 e5 4b 39 ff 4c 89 fa 4c 89 f9 48 c1 ea 03 83 e1 07 <42> 0f b6 14 32 38 ca 7f 08 84 d2 0f 85 06 10 00 00 48 89 d8 48 89
RSP: 0018:ffffc900088bf860 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffffffff9b9bebc0 RCX: 0000000000000000
RDX: 1ffffffff3ac6000 RSI: ffffc90002d82000 RDI: ffffc900088bf9e8
RBP: ffffffff9d630001 R08: 0000000000000000 R09: ffffc900088bf9e8
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: ffffffff9d630000 R14: dffffc0000000000 R15: ffffffff9d630000
FS:  00007f63eef63640(0000) GS:ffff88806d000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff3ac6000 CR3: 0000000029d90005 CR4: 0000000000770ef0
PKRU: 55555554
==================================================================

Link: https://lkml.kernel.org/r/20220907200917.654103-1-lk@c--e.de

cc: "Naveen N. Rao" <naveen.n.rao@linux.ibm.com>
cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
cc: "David S. Miller" <davem@davemloft.net>
Cc: stable@vger.kernel.org
Fixes: 1da177e4 ("Linux-2.6.12-rc2")
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Christian A. Ehrhardt <lk@c--e.de>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

SBI firmware should report total number of firmware and hardware counters
including unused ones or special ones. In this case the kernel doesn't need
to make any assumptions about gaps in reported counters, e.g. excluded timer
counter. That was fixed in OpenSBI v1.1 by commit 3f66465fb6bf ("lib: pmu:
allow to use the highest available counter"). This kernel patch has no effect
if SBI firmware behaves correctly. However it eliminates access beyond the
allocated pmu_ctr_list if the kernel is used with OpenSBI older than v1.1.

Fixes: e9991434 ("RISC-V: Add perf platform driver based on SBI PMU extension")
Signed-off-by: Sergey Matyukevich <sergey.matyukevich@syntacore.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220830155306.301714-2-geomatsi@gmail.comSigned-off-by: Palmer Dabbelt <palmer@rivosinc.com>

Some calls to synthesis functions set err < 0 but only warn about the
failure and continue.  However they do not set err back to zero, relying
on subsequent code to do that.

That changed with the introduction of option --synth. When --synth=no
subsequent functions that set err back to zero are not called.

Fix by setting err = 0 in those cases.

Example:

 Before:

   $ perf record --no-bpf-event --synth=all -o /tmp/huh uname
   Couldn't synthesize bpf events.
   Linux
   [ perf record: Woken up 1 times to write data ]
   [ perf record: Captured and wrote 0.014 MB /tmp/huh (7 samples) ]
   $ perf record --no-bpf-event --synth=no -o /tmp/huh uname
   Couldn't synthesize bpf events.

 After:

   $ perf record --no-bpf-event --synth=no -o /tmp/huh uname
   Couldn't synthesize bpf events.
   Linux
   [ perf record: Woken up 1 times to write data ]
   [ perf record: Captured and wrote 0.014 MB /tmp/huh (7 samples) ]

Fixes: 41b740b6 ("perf record: Add --synth option")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20220907162458.72817-1-adrian.hunter@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

install(1), by default, installs with rwxr-xr-x permissions. Modify
perf's Makefile to pass '-m 644' when installing:

  * Documentation/tips.txt
  * examples/bpf/*
  * perf-completion.sh
  * perf_dlfilter.h header
  * scripts/perl/Perf-Trace-Util/lib/Perf/Trace/*
  * scripts/perl/*.pl
  * tests/attr/*
  * tests/attr.py
  * tests/shell/lib/*.sh
  * trace/strace/groups/*

All those are supposed to be non-executable. Either they are not scripts
at all, or they don't have shebang.

Signed-off-by: <jslaby@suse.cz>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220908060426.9619-1-jslaby@suse.czSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Commit b91e5492 ("perf record: Add a dummy event on hybrid
systems to collect metadata records") adds a dummy event on hybrid
systems to fix the symbol "unknown" issue when the workload is created
in a P-core but runs on an E-core. The added dummy event will cause
"perf script -F iregs" to fail. Dummy events do not have "iregs"
attribute set, so when we do evsel__check_attr, the "iregs" attribute
check will fail, so the issue happened.

The following commit [1] has fixed a similar issue by skipping the attr
check for the dummy event because it does not have any samples anyway. It
works okay for the normal mode, but the issue still happened when running
the test in the pipe mode. In the pipe mode, it calls process_attr() which
still checks the attr for the dummy event. This commit fixed the issue by
skipping the attr check for the dummy event in the API evsel__check_attr,
Otherwise, we have to patch everywhere when evsel__check_attr() is called.

Before:

  #./perf record -o - --intr-regs=di,r8,dx,cx -e br_inst_retired.near_call:p -c 1000 --per-thread true 2>/dev/null|./perf script -F iregs |head -5
  Samples for 'dummy:HG' event do not have IREGS attribute set. Cannot print 'iregs' field.
  0x120 [0x90]: failed to process type: 64
  #

After:

  # ./perf record -o - --intr-regs=di,r8,dx,cx -e br_inst_retired.near_call:p -c 1000 --per-thread true 2>/dev/null|./perf script -F iregs |head -5
  ABI:2    CX:0x55b8efa87000    DX:0x55b8efa7e000    DI:0xffffba5e625efbb0    R8:0xffff90e51f8ae100
  ABI:2    CX:0x7f1dae1e4000    DX:0xd0    DI:0xffff90e18c675ac0    R8:0x71
  ABI:2    CX:0xcc0    DX:0x1    DI:0xffff90e199880240    R8:0x0
  ABI:2    CX:0xffff90e180dd7500    DX:0xffff90e180dd7500    DI:0xffff90e180043500    R8:0x1
  ABI:2    CX:0x50    DX:0xffff90e18c583bd0    DI:0xffff90e1998803c0    R8:0x58
  #

[1]https://lore.kernel.org/lkml/20220831124041.219925-1-jolsa@kernel.org/

Fixes: b91e5492 ("perf record: Add a dummy event on hybrid systems to collect metadata records")
Suggested-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220908070030.3455164-1-zhengjun.xing@linux.intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Before:
  # perf lock -h

   Usage: perf lock [<options>] {record|report|script|info|contention|contention}

      -D, --dump-raw-trace  dump raw trace in ASCII
      -f, --force           don't complain, do it
      -i, --input <file>    input file name
      -v, --verbose         be more verbose (show symbol address, etc)
          --kallsyms <file>
                            kallsyms pathname
          --vmlinux <file>  vmlinux pathname

After:
  # perf lock -h

   Usage: perf lock [<options>] {record|report|script|info|contention}

      -D, --dump-raw-trace  dump raw trace in ASCII
      -f, --force           don't complain, do it
      -i, --input <file>    input file name
      -v, --verbose         be more verbose (show symbol address, etc)
          --kallsyms <file>
                            kallsyms pathname
          --vmlinux <file>  vmlinux pathname

Fixes: 528b9cab ("perf lock: Add 'contention' subcommand")
Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220908014854.151203-1-yangjihong1@huawei.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Pull spi fixes from Mark Brown:
 "Several fixes that came in since the merge window, the major one being
  a fix for the spi-mux driver which was broken by the performance
  optimisations due to it peering inside the core's data structures more
  than it should"

* tag 'spi-fix-v6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: spi: Fix queue hang if previous transfer failed
  spi: mux: Fix mux interaction with fast path optimisations
  spi: cadence-quadspi: Disable irqs during indirect reads
  spi: bitbang: Fix lsb-first Rx

Merge tag 'regulator-fix-v6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator fixes from Mark Brown:
 "One core fix here improving the error handling on enable failure, plus
  smaller fixes for the pfuze100 drive and the SPMI DT bindings"

* tag 'regulator-fix-v6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: Fix qcom,spmi-regulator schema
  regulator: pfuze100: Fix the global-out-of-bounds access in pfuze100_regulator_probe()
  regulator: core: Clean up on enable failure

Pull regmap fix from Mark Brown:
 "A fix for how we handle controller constraints on SPI message sizes,
  only impacting systems with SPI controllers with very low limits like
  the AMD controller used in the Steam Deck"

* tag 'regmap-fix-v6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: spi: Reserve space for register address/padding

Pull NVMe fixes from Christoph:

"nvme fixes for Linux 6.1

 - fix a use after free in nvmet (Bart Van Assche)
 - fix a use after free when detecting digest errors (Sagi Grimberg)
 - fix regression that causes sporadic TCP requests to time out
   (Sagi Grimberg)
 - fix two off by ones errors in the nvmet ZNS support
   (Dennis Maisenbacher)
 - requeue aen after firmware activation (Keith Busch)"

* tag 'nvme-6.0-2022-09-08' of git://git.infradead.org/nvme:
  nvme: requeue aen after firmware activation
  nvmet: fix mar and mor off-by-one errors
  nvme-tcp: fix regression that causes sporadic requests to time out
  nvme-tcp: fix UAF when detecting digest errors
  nvmet: fix a use-after-free

Avoid compiler warning about format %llu that expects long long unsigned
int but argument has type __u64.
Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Fixes: c3afd6e5 ("perf dlfilter: Add dlfilter-show-cycles")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20220905074735.4513-1-adrian.hunter@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

The offending commit removed mmap_per_thread(), which did not consider
the different set-output rules for per-thread mmaps i.e. in the per-thread
case set-output is used for file descriptors of the same thread not the
same cpu.

This was not immediately noticed because it only happens with
multi-threaded targets and we do not have a test for that yet.

Reinstate mmap_per_thread() expanding it to cover also system-wide per-cpu
events i.e. to continue to allow the mixing of per-thread and per-cpu
mmaps.

Debug messages (with -vv) show the file descriptors that are opened with
sys_perf_event_open. New debug messages are added (needs -vvv) that show
also which file descriptors are mmapped and which are redirected with
set-output.

In the per-cpu case (cpu != -1) file descriptors for the same CPU are
set-output to the first file descriptor for that CPU.

In the per-thread case (cpu == -1) file descriptors for the same thread are
set-output to the first file descriptor for that thread.

Example (process 17489 has 2 threads):

 Before (but with new debug prints):

   $ perf record --no-bpf-event -vvv --per-thread -p 17489
   <SNIP>
   sys_perf_event_open: pid 17489  cpu -1  group_fd -1  flags 0x8 = 5
   sys_perf_event_open: pid 17490  cpu -1  group_fd -1  flags 0x8 = 6
   <SNIP>
   libperf: idx 0: mmapping fd 5
   libperf: idx 0: set output fd 6 -> 5
   failed to mmap with 22 (Invalid argument)

 After:

   $ perf record --no-bpf-event -vvv --per-thread -p 17489
   <SNIP>
   sys_perf_event_open: pid 17489  cpu -1  group_fd -1  flags 0x8 = 5
   sys_perf_event_open: pid 17490  cpu -1  group_fd -1  flags 0x8 = 6
   <SNIP>
   libperf: mmap_per_thread: nr cpu values (may include -1) 1 nr threads 2
   libperf: idx 0: mmapping fd 5
   libperf: idx 1: mmapping fd 6
   <SNIP>
   [ perf record: Woken up 2 times to write data ]
   [ perf record: Captured and wrote 0.018 MB perf.data (15 samples) ]

Per-cpu example (process 20341 has 2 threads, same as above):

   $ perf record --no-bpf-event -vvv -p 20341
   <SNIP>
   sys_perf_event_open: pid 20341  cpu 0  group_fd -1  flags 0x8 = 5
   sys_perf_event_open: pid 20342  cpu 0  group_fd -1  flags 0x8 = 6
   sys_perf_event_open: pid 20341  cpu 1  group_fd -1  flags 0x8 = 7
   sys_perf_event_open: pid 20342  cpu 1  group_fd -1  flags 0x8 = 8
   sys_perf_event_open: pid 20341  cpu 2  group_fd -1  flags 0x8 = 9
   sys_perf_event_open: pid 20342  cpu 2  group_fd -1  flags 0x8 = 10
   sys_perf_event_open: pid 20341  cpu 3  group_fd -1  flags 0x8 = 11
   sys_perf_event_open: pid 20342  cpu 3  group_fd -1  flags 0x8 = 12
   sys_perf_event_open: pid 20341  cpu 4  group_fd -1  flags 0x8 = 13
   sys_perf_event_open: pid 20342  cpu 4  group_fd -1  flags 0x8 = 14
   sys_perf_event_open: pid 20341  cpu 5  group_fd -1  flags 0x8 = 15
   sys_perf_event_open: pid 20342  cpu 5  group_fd -1  flags 0x8 = 16
   sys_perf_event_open: pid 20341  cpu 6  group_fd -1  flags 0x8 = 17
   sys_perf_event_open: pid 20342  cpu 6  group_fd -1  flags 0x8 = 18
   sys_perf_event_open: pid 20341  cpu 7  group_fd -1  flags 0x8 = 19
   sys_perf_event_open: pid 20342  cpu 7  group_fd -1  flags 0x8 = 20
   <SNIP>
   libperf: mmap_per_cpu: nr cpu values 8 nr threads 2
   libperf: idx 0: mmapping fd 5
   libperf: idx 0: set output fd 6 -> 5
   libperf: idx 1: mmapping fd 7
   libperf: idx 1: set output fd 8 -> 7
   libperf: idx 2: mmapping fd 9
   libperf: idx 2: set output fd 10 -> 9
   libperf: idx 3: mmapping fd 11
   libperf: idx 3: set output fd 12 -> 11
   libperf: idx 4: mmapping fd 13
   libperf: idx 4: set output fd 14 -> 13
   libperf: idx 5: mmapping fd 15
   libperf: idx 5: set output fd 16 -> 15
   libperf: idx 6: mmapping fd 17
   libperf: idx 6: set output fd 18 -> 17
   libperf: idx 7: mmapping fd 19
   libperf: idx 7: set output fd 20 -> 19
   <SNIP>
   [ perf record: Woken up 7 times to write data ]
   [ perf record: Captured and wrote 0.020 MB perf.data (17 samples) ]

Fixes: ae4f8ae1 ("libperf evlist: Allow mixing per-thread and per-cpu mmaps")
Reported-by: Tomáš Trnka <trnka@scm.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=216441Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220905114209.8389-1-adrian.hunter@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Every time we return from an issue handler and expect the request to be
retried we should also setup it for async exec ourselves. Do that when
we return on IORING_RECVSEND_POLL_FIRST in io_sendzc(), otherwise it'll
re-read the address, which might be a surprise for the userspace.

Fixes: 092aeedb ("io_uring: allow to pass addr into sendzc")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/ab1d0657890d6721339c56d2e161a4bba06f85d0.1662642013.git.asml.silence@gmail.comSigned-off-by: Jens Axboe <axboe@kernel.dk>

Merge tag 'asoc-fix-v6.0-rc4' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v6.0

Quite a few fixes here, all driver specific and fairly small.

Pull networking fixes from Paolo Abeni:
 "Including fixes from rxrpc, netfilter, wireless and bluetooth
  subtrees.

  Current release - regressions:

   - skb: export skb drop reaons to user by TRACE_DEFINE_ENUM

   - bluetooth: fix regression preventing ACL packet transmission

  Current release - new code bugs:

   - dsa: microchip: fix kernel oops on ksz8 switches

   - dsa: qca8k: fix NULL pointer dereference for
     of_device_get_match_data

  Previous releases - regressions:

   - netfilter: clean up hook list when offload flags check fails

   - wifi: mt76: fix crash in chip reset fail

   - rxrpc: fix ICMP/ICMP6 error handling

   - ice: fix DMA mappings leak

   - i40e: fix kernel crash during module removal

  Previous releases - always broken:

   - ipv6: sr: fix out-of-bounds read when setting HMAC data.

   - tcp: TX zerocopy should not sense pfmemalloc status

   - sch_sfb: don't assume the skb is still around after
     enqueueing to child

   - netfilter: drop dst references before setting

   - wifi: wilc1000: fix DMA on stack objects

   - rxrpc: fix an insufficiently large sglist in
     rxkad_verify_packet_2()

   - fec: use a spinlock to guard `fep->ptp_clk_on`

  Misc:

   - usb: qmi_wwan: add Quectel RM520N"

* tag 'net-6.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (50 commits)
  sch_sfb: Also store skb len before calling child enqueue
  net: phy: lan87xx: change interrupt src of link_up to comm_ready
  net/smc: Fix possible access to freed memory in link clear
  net: ethernet: mtk_eth_soc: check max allowed hash in mtk_ppe_check_skb
  net: skb: export skb drop reaons to user by TRACE_DEFINE_ENUM
  net: ethernet: mtk_eth_soc: fix typo in __mtk_foe_entry_clear
  net: dsa: felix: access QSYS_TAG_CONFIG under tas_lock in vsc9959_sched_speed_set
  net: dsa: felix: disable cut-through forwarding for frames oversized for tc-taprio
  net: dsa: felix: tc-taprio intervals smaller than MTU should send at least one packet
  net: usb: qmi_wwan: add Quectel RM520N
  net: dsa: qca8k: fix NULL pointer dereference for of_device_get_match_data
  tcp: fix early ETIMEDOUT after spurious non-SACK RTO
  stmmac: intel: Simplify intel_eth_pci_remove()
  net: mvpp2: debugfs: fix memory leak when using debugfs_lookup()
  ipv6: sr: fix out-of-bounds read when setting HMAC data.
  bonding: accept unsolicited NA message
  bonding: add all node mcast address when slave up
  bonding: use unspecified address if no available link local address
  wifi: use struct_group to copy addresses
  wifi: mac80211_hwsim: check length for virtio packets
  ...

Commit d4252071 ("add barriers to buffer_uptodate and
set_buffer_uptodate") added proper memory barriers to the buffer head
BH_Uptodate bit, so that anybody who tests a buffer for being up-to-date
will be guaranteed to actually see initialized state.

However, that commit didn't _just_ add the memory barrier, it also ended
up dropping the "was it already set" logic that the BUFFER_FNS() macro
had.

That's conceptually the right thing for a generic "this is a memory
barrier" operation, but in the case of the buffer contents, we really
only care about the memory barrier for the _first_ time we set the bit,
in that the only memory ordering protection we need is to avoid anybody
seeing uninitialized memory contents.

Any other access ordering wouldn't be about the BH_Uptodate bit anyway,
and would require some other proper lock (typically BH_Lock or the folio
lock).  A reader that races with somebody invalidating the buffer head
isn't an issue wrt the memory ordering, it's a serialization issue.

Now, you'd think that the buffer head operations don't matter in this
day and age (and I certainly thought so), but apparently some loads
still end up being heavy users of buffer heads.  In particular, the
kernel test robot reported that not having this bit access optimization
in place caused a noticeable direct IO performance regression on ext4:

  fxmark.ssd_ext4_no_jnl_DWTL_54_directio.works/sec -26.5% regression

although you presumably need a fast disk and a lot of cores to actually
notice.

Link: https://lore.kernel.org/all/Yw8L7HTZ%2FdE2%2Fo9C@xsang-OptiPlex-9020/Reported-by: kernel test robot <oliver.sang@intel.com>
Tested-by: Fengwei Yin <fengwei.yin@intel.com>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull EFI fixes from Ard Biesheuvel:
 "A couple of low-priority EFI fixes:

   - prevent the randstruct plugin from re-ordering EFI protocol
     definitions

   - fix a use-after-free in the capsule loader

   - drop unused variable"

* tag 'efi-urgent-for-v6.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  efi: capsule-loader: Fix use-after-free in efi_capsule_write
  efi/x86: libstub: remove unused variable
  efi: libstub: Disable struct randomization

Enabling panfrost GPU OPP with dynamic regulator will make OPP
responsible to enable and configure it.

Unfortunately OPP configure and enable the regulator when an OPP
is asked to be set, which is not the case during
panfrost_devfreq_init().

This leave the regulator unconfigured and if no GPU load is
triggered, no OPP is asked to be set which make the regulator framework
switching it off during regulator_late_cleanup() without
noticing and therefore make the board hang as any access to GPU
memory space make bus locks up.

Call dev_pm_opp_set_opp() with the recommend OPP in
panfrost_devfreq_init() to enable the regulator, this will properly
configure and enable the regulator and will avoid any switch off
by regulator_late_cleanup().
Suggested-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220906153034.153321-5-peron.clem@gmail.com

Cong Wang noticed that the previous fix for sch_sfb accessing the queued
skb after enqueueing it to a child qdisc was incomplete: the SFB enqueue
function was also calling qdisc_qstats_backlog_inc() after enqueue, which
reads the pkt len from the skb cb field. Fix this by also storing the skb
len, and using the stored value to increment the backlog after enqueueing.

Fixes: 9efd2329 ("sch_sfb: Don't assume the skb is still around after enqueueing to child")
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Acked-by: Cong Wang <cong.wang@bytedance.com>
Link: https://lore.kernel.org/r/20220905192137.965549-1-toke@toke.dkSigned-off-by: Paolo Abeni <pabeni@redhat.com>

Currently phy link up/down interrupt is enabled using the
LAN87xx_INTERRUPT_MASK register. In the lan87xx_read_status function,
phy link is determined using the T1_MODE_STAT_REG register comm_ready bit.
comm_ready bit is set using the loc_rcvr_status & rem_rcvr_status.
Whenever the phy link is up, LAN87xx_INTERRUPT_SOURCE link_up bit is set
first but comm_ready bit takes some time to set based on local and
remote receiver status.
As per the current implementation, interrupt is triggered using link_up
but the comm_ready bit is still cleared in the read_status function. So,
link is always down.  Initially tested with the shared interrupt
mechanism with switch and internal phy which is working, but after
implementing interrupt controller it is not working.
It can fixed either by updating the read_status function to read from
LAN87XX_INTERRUPT_SOURCE register or enable the interrupt mask for
comm_ready bit. But the validation team recommends the use of comm_ready
for link detection.
This patch fixes by enabling the comm_ready bit for link_up in the
LAN87XX_INTERRUPT_MASK_2 register (MISC Bank) and link_down in
LAN87xx_INTERRUPT_MASK register.

Fixes: 8a1b415d ("net: phy: added ethtool master-slave configuration support")
Signed-off-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20220905152750.5079-1-arun.ramadoss@microchip.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

Otherwise lockdep will complain about cleaning up the bulk_move.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907100051.570641-1-christian.koenig@amd.com
Fixes: d91c411c ("drm/ttm: update bulk move object of ghost BO")