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2 years agoxtensa: fix a7 clobbering in coprocessor context load/store
Max Filippov [Thu, 14 Apr 2022 05:44:36 +0000 (22:44 -0700)]
xtensa: fix a7 clobbering in coprocessor context load/store

Fast coprocessor exception handler saves a3..a6, but coprocessor context
load/store code uses a4..a7 as temporaries, potentially clobbering a7.
'Potentially' because coprocessor state load/store macros may not use
all four temporary registers (and neither FPU nor HiFi macros do).
Use a3..a6 as intended.

Cc: stable@vger.kernel.org
Fixes: c658eac628aa ("[XTENSA] Add support for configurable registers and coprocessors")
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2 years agoarch: xtensa: platforms: Fix deadlock in rs_close()
Duoming Zhou [Thu, 7 Apr 2022 15:44:30 +0000 (23:44 +0800)]
arch: xtensa: platforms: Fix deadlock in rs_close()

There is a deadlock in rs_close(), which is shown
below:

   (Thread 1)              |      (Thread 2)
                           | rs_open()
rs_close()                 |  mod_timer()
 spin_lock_bh() //(1)      |  (wait a time)
 ...                       | rs_poll()
 del_timer_sync()          |  spin_lock() //(2)
 (wait timer to stop)      |  ...

We hold timer_lock in position (1) of thread 1 and
use del_timer_sync() to wait timer to stop, but timer handler
also need timer_lock in position (2) of thread 2.
As a result, rs_close() will block forever.

This patch deletes the redundant timer_lock in order to
prevent the deadlock. Because there is no race condition
between rs_close, rs_open and rs_poll.

Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Message-Id: <20220407154430.22387-1-duoming@zju.edu.cn>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2 years agoxtensa: patch_text: Fixup last cpu should be master
Guo Ren [Thu, 7 Apr 2022 07:33:22 +0000 (15:33 +0800)]
xtensa: patch_text: Fixup last cpu should be master

These patch_text implementations are using stop_machine_cpuslocked
infrastructure with atomic cpu_count. The original idea: When the
master CPU patch_text, the others should wait for it. But current
implementation is using the first CPU as master, which couldn't
guarantee the remaining CPUs are waiting. This patch changes the
last CPU as the master to solve the potential risk.

Fixes: 64711f9a47d4 ("xtensa: implement jump_label support")
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: <stable@vger.kernel.org>
Message-Id: <20220407073323.743224-4-guoren@kernel.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2 years agoLinux 5.18-rc2
Linus Torvalds [Mon, 11 Apr 2022 00:21:36 +0000 (14:21 -1000)]
Linux 5.18-rc2

2 years agoMerge tag 'tty-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Sun, 10 Apr 2022 20:08:50 +0000 (10:08 -1000)]
Merge tag 'tty-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull serial driver fix from Greg KH:
 "This is a single serial driver fix for a build issue that showed up
  due to changes that came in through the tty tree in 5.18-rc1 that were
  missed previously. It resolves a build error with the mpc52xx_uart
  driver.

  It has been in linux-next this week with no reported problems"

* tag 'tty-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: serial: mpc52xx_uart: make rx/tx hooks return unsigned, part II.

2 years agoMerge tag 'staging-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Sun, 10 Apr 2022 20:04:30 +0000 (10:04 -1000)]
Merge tag 'staging-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver fix from Greg KH:
 "Here is a single staging driver fix for 5.18-rc2 that resolves an
  endian issue for the r8188eu driver. It has been in linux-next all
  this week with no reported problems"

* tag 'staging-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: r8188eu: Fix PPPoE tag insertion on little endian systems

2 years agoMerge tag 'driver-core-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 10 Apr 2022 19:55:09 +0000 (09:55 -1000)]
Merge tag 'driver-core-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here are two small driver core changes for 5.18-rc2.

  They are the final bits in the removal of the default_attrs field in
  struct kobj_type. I had to wait until after 5.18-rc1 for all of the
  changes to do this came in through different development trees, and
  then one new user snuck in. So this series has two changes:

   - removal of the default_attrs field in the powerpc/pseries/vas code.

     The change has been acked by the PPC maintainers to come through
     this tree

   - removal of default_attrs from struct kobj_type now that all
     in-kernel users are removed.

     This cleans up the kobject code a little bit and removes some
     duplicated functionality that confused people (now there is only
     one way to do default groups)

  Both of these have been in linux-next for all of this week with no
  reported problems"

* tag 'driver-core-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  kobject: kobj_type: remove default_attrs
  powerpc/pseries/vas: use default_groups in kobj_type

2 years agoMerge tag 'char-misc-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Sun, 10 Apr 2022 19:52:46 +0000 (09:52 -1000)]
Merge tag 'char-misc-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver fix from Greg KH:
 "A single driver fix. It resolves the build warning issue on 32bit
  systems in the habannalabs driver that came in during the 5.18-rc1
  merge cycle.

  It has been in linux-next for all this week with no reported problems"

* tag 'char-misc-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  habanalabs: Fix test build failures

2 years agoMerge tag 'powerpc-5.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sun, 10 Apr 2022 17:36:18 +0000 (07:36 -1000)]
Merge tag 'powerpc-5.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix KVM "lost kick" race, where an attempt to pull a vcpu out of the
   guest could be lost (or delayed until the next guest exit).

 - Disable SCV (system call vectored) when PR KVM guests could be run.

 - Fix KVM PR guests using SCV, by disallowing AIL != 0 for KVM PR
   guests.

 - Add a new KVM CAP to indicate if AIL == 3 is supported.

 - Fix a regression when hotplugging a CPU to a memoryless/cpuless node.

 - Make virt_addr_valid() stricter for 64-bit Book3E & 32-bit, which
   fixes crashes seen due to hardened usercopy.

 - Revert a change to max_mapnr which broke HIGHMEM.

Thanks to Christophe Leroy, Fabiano Rosas, Kefeng Wang, Nicholas Piggin,
and Srikar Dronamraju.

* tag 'powerpc-5.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  Revert "powerpc: Set max_mapnr correctly"
  powerpc: Fix virt_addr_valid() for 64-bit Book3E & 32-bit
  KVM: PPC: Move kvmhv_on_pseries() into kvm_ppc.h
  powerpc/numa: Handle partially initialized numa nodes
  powerpc/64: Fix build failure with allyesconfig in book3s_64_entry.S
  KVM: PPC: Use KVM_CAP_PPC_AIL_MODE_3
  KVM: PPC: Book3S PR: Disallow AIL != 0
  KVM: PPC: Book3S PR: Disable SCV when AIL could be disabled
  KVM: PPC: Book3S HV P9: Fix "lost kick" race

2 years agoMerge tag 'irq-urgent-2022-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 10 Apr 2022 17:25:49 +0000 (07:25 -1000)]
Merge tag 'irq-urgent-2022-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:
 "A set of interrupt chip driver fixes:

   - A fix for a long standing bug in the ARM GICv3 redistributor
     polling which uses the wrong bit number to test.

   - Prevent translation of bogus ACPI table entries which map device
     interrupts into the IPI space on ARM GICs.

   - Don't write into the pending register of ARM GICV4 before the scan
     in hardware has completed.

   - A set of build and correctness fixes for the Qualcomm MPM driver"

* tag 'irq-urgent-2022-04-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/gic, gic-v3: Prevent GSI to SGI translations
  irqchip/gic-v3: Fix GICR_CTLR.RWP polling
  irqchip/gic-v4: Wait for GICR_VPENDBASER.Dirty to clear before descheduling
  irqchip/irq-qcom-mpm: fix return value check in qcom_mpm_init()
  irq/qcom-mpm: Fix build error without MAILBOX

2 years agoMerge tag 'x86_urgent_for_v5.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 10 Apr 2022 17:12:27 +0000 (07:12 -1000)]
Merge tag 'x86_urgent_for_v5.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Fix the MSI message data struct definition

 - Use local labels in the exception table macros to avoid symbol
   conflicts with clang LTO builds

 - A couple of fixes to objtool checking of the relatively newly added
   SLS and IBT code

 - Rename a local var in the WARN* macro machinery to prevent shadowing

* tag 'x86_urgent_for_v5.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/msi: Fix msi message data shadow struct
  x86/extable: Prefer local labels in .set directives
  x86,bpf: Avoid IBT objtool warning
  objtool: Fix SLS validation for kcov tail-call replacement
  objtool: Fix IBT tail-call detection
  x86/bug: Prevent shadowing in __WARN_FLAGS
  x86/mm/tlb: Revert retpoline avoidance approach

2 years agoMerge tag 'perf_urgent_for_v5.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 10 Apr 2022 17:08:22 +0000 (07:08 -1000)]
Merge tag 'perf_urgent_for_v5.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf fixes from Borislav Petkov:

 - A couple of fixes to cgroup-related handling of perf events

 - A couple of fixes to event encoding on Sapphire Rapids

 - Pass event caps of inherited events so that perf doesn't fail wrongly
   at fork()

 - Add support for a new Raptor Lake CPU

* tag 'perf_urgent_for_v5.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/core: Always set cpuctx cgrp when enable cgroup event
  perf/core: Fix perf_cgroup_switch()
  perf/core: Use perf_cgroup_info->active to check if cgroup is active
  perf/core: Don't pass task around when ctx sched in
  perf/x86/intel: Update the FRONTEND MSR mask on Sapphire Rapids
  perf/x86/intel: Don't extend the pseudo-encoding to GP counters
  perf/core: Inherit event_caps
  perf/x86/uncore: Add Raptor Lake uncore support
  perf/x86/msr: Add Raptor Lake CPU support
  perf/x86/cstate: Add Raptor Lake support
  perf/x86: Add Intel Raptor Lake support

2 years agoMerge tag 'locking_urgent_for_v5.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 10 Apr 2022 16:56:46 +0000 (06:56 -1000)]
Merge tag 'locking_urgent_for_v5.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking fixes from Borislav Petkov:

 - Allow the compiler to optimize away unused percpu accesses and change
   the local_lock_* macros back to inline functions

 - A couple of fixes to static call insn patching

* tag 'locking_urgent_for_v5.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Revert "mm/page_alloc: mark pagesets as __maybe_unused"
  Revert "locking/local_lock: Make the empty local_lock_*() function a macro."
  x86/percpu: Remove volatile from arch_raw_cpu_ptr().
  static_call: Remove __DEFINE_STATIC_CALL macro
  static_call: Properly initialise DEFINE_STATIC_CALL_RET0()
  static_call: Don't make __static_call_return0 static
  x86,static_call: Fix __static_call_return0 for i386

2 years agoMerge tag 'sched_urgent_for_v5.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 10 Apr 2022 16:47:49 +0000 (06:47 -1000)]
Merge tag 'sched_urgent_for_v5.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fixes from Borislav Petkov:

 - Use the correct static key checking primitive on the IRQ exit path

 - Two fixes for the new forceidle balancer

* tag 'sched_urgent_for_v5.18_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  entry: Fix compile error in dynamic_irqentry_exit_cond_resched()
  sched: Teach the forced-newidle balancer about CPU affinity limitation.
  sched/core: Fix forceidle balancing

2 years agoMerge tag 'perf-tools-fixes-for-v5.18-2022-04-09' of git://git.kernel.org/pub/scm...
Linus Torvalds [Sun, 10 Apr 2022 04:45:10 +0000 (18:45 -1000)]
Merge tag 'perf-tools-fixes-for-v5.18-2022-04-09' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix the clang command line option probing and remove some options to
   filter out, fixing the build with the latest clang versions

 - Fix 'perf bench' futex and epoll benchmarks to deal with machines
   with more than 1K CPUs

 - Fix 'perf test tsc' error message when not supported

 - Remap perf ring buffer if there is no space for event, fixing perf
   usage in 32-bit ChromeOS

 - Drop objdump stderr to avoid getting stuck waiting for stdout output
   in 'perf annotate'

 - Fix up garbled output by now showing unwind error messages when
   augmenting frame in best effort mode

 - Fix perf's libperf_print callback, use the va_args eprintf() variant

 - Sync vhost and arm64 cputype headers with the kernel sources

 - Fix 'perf report --mem-mode' with ARM SPE

 - Add missing external commands ('iiostat', etc) to 'perf --list-cmds'

* tag 'perf-tools-fixes-for-v5.18-2022-04-09' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf annotate: Drop objdump stderr to avoid getting stuck waiting for stdout output
  perf tools: Add external commands to list-cmds
  perf docs: Add perf-iostat link to manpages
  perf session: Remap buf if there is no space for event
  perf bench: Fix epoll bench to correct usage of affinity for machines with #CPUs > 1K
  perf bench: Fix futex bench to correct usage of affinity for machines with #CPUs > 1K
  perf tools: Fix perf's libperf_print callback
  perf: arm-spe: Fix perf report --mem-mode
  perf unwind: Don't show unwind error messages when augmenting frame pointer stack
  tools headers arm64: Sync arm64's cputype.h with the kernel sources
  perf test tsc: Fix error message when not supported
  perf build: Don't use -ffat-lto-objects in the python feature test when building with clang-13
  perf python: Fix probing for some clang command line options
  tools build: Filter out options and warnings not supported by clang
  tools build: Use $(shell ) instead of `` to get embedded libperl's ccopts
  tools include UAPI: Sync linux/vhost.h with the kernel sources

2 years agoMerge tag 'cxl+nvdimm-for-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 10 Apr 2022 04:31:59 +0000 (18:31 -1000)]
Merge tag 'cxl+nvdimm-for-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull cxl and nvdimm fixes from Dan Williams:

 - Fix a compile error in the nvdimm unit tests

 - Fix a shadowed variable warning in the CXL PCI driver

* tag 'cxl+nvdimm-for-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  cxl/pci: Drop shadowed variable
  tools/testing/nvdimm: Fix security_init() symbol collision

2 years agoMerge tag 'gpio-fixes-for-v5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 10 Apr 2022 04:17:43 +0000 (18:17 -1000)]
Merge tag 'gpio-fixes-for-v5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fix from Bartosz Golaszewski:

 - fix a race condition with consumers accessing the fields of GPIO IRQ
   chips before they're fully initialized

* tag 'gpio-fixes-for-v5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: Restrict usage of GPIO chip irq members before initialization

2 years agoMerge tag 'irqchip-fixes-5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Thomas Gleixner [Sat, 9 Apr 2022 20:21:55 +0000 (22:21 +0200)]
Merge tag 'irqchip-fixes-5.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent

Pull irqchip fixes from Marc Zyngier:

 - Fix GICv3 polling for RWP in redistributors

 - Reject ACPI attempts to use SGIs on GIC/GICv3

 - Fix unpredictible behaviour when making a VPE non-resident
   with GICv4

 - A couple of fixes for the newly merged qcom-mpm driver

Link: https://lore.kernel.org/lkml/20220409094229.267649-1-maz@kernel.org
2 years agoperf annotate: Drop objdump stderr to avoid getting stuck waiting for stdout output
Ian Rogers [Thu, 7 Apr 2022 23:04:59 +0000 (16:04 -0700)]
perf annotate: Drop objdump stderr to avoid getting stuck waiting for stdout output

If objdump writes to stderr it can block waiting for it to be read. As
perf doesn't read stderr then progress stops with perf waiting for
stdout output.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexandre Truong <alexandre.truong@arm.com>
Cc: Dave Marchevsky <davemarchevsky@fb.com>
Cc: Denis Nikitin <denik@chromium.org>
Cc: German Gomez <german.gomez@arm.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Lexi Shao <shaolexi@huawei.com>
Cc: Li Huafei <lihuafei1@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin Liška <mliska@suse.cz>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Remi Bernon <rbernon@codeweavers.com>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Cc: William Cohen <wcohen@redhat.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lore.kernel.org/lkml/20220407230503.1265036-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoperf tools: Add external commands to list-cmds
Michael Petlan [Mon, 4 Apr 2022 22:15:41 +0000 (00:15 +0200)]
perf tools: Add external commands to list-cmds

The `perf --list-cmds` output prints only internal commands, although
there is no reason for that from users' perspective.

Adding the external commands to commands array with NULL function
pointer allows printing all perf commands while not changing the logic
of command handler selection.

Signed-off-by: Michael Petlan <mpetlan@redhat.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20220404221541.30312-2-mpetlan@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoperf docs: Add perf-iostat link to manpages
Michael Petlan [Mon, 4 Apr 2022 22:15:40 +0000 (00:15 +0200)]
perf docs: Add perf-iostat link to manpages

Signed-off-by: Michael Petlan <mpetlan@redhat.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20220404221541.30312-1-mpetlan@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoperf session: Remap buf if there is no space for event
Denis Nikitin [Wed, 30 Mar 2022 03:11:30 +0000 (20:11 -0700)]
perf session: Remap buf if there is no space for event

If a perf event doesn't fit into remaining buffer space return NULL to
remap buf and fetch the event again.

Keep the logic to error out on inadequate input from fuzzing.

This fixes perf failing on ChromeOS (with 32b userspace):

  $ perf report -v -i perf.data
  ...
  prefetch_event: head=0x1fffff8 event->header_size=0x30, mmap_size=0x2000000: fuzzed or compressed perf.data?
  Error:
  failed to process sample

Fixes: 57fc032ad643ffd0 ("perf session: Avoid infinite loop when seeing invalid header.size")
Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Denis Nikitin <denik@chromium.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20220330031130.2152327-1-denik@chromium.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 9 Apr 2022 16:05:46 +0000 (06:05 -1000)]
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:

 - add support for new devices (ufs, mvsas)

 - a major set of fixes in lpfc

 - get rid of a driver specific ioctl in pcmraid

 - a major rework of aha152x to get rid of the scsi_pointer.

 - minor fixes and obvious changes including several spelling updates.

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (36 commits)
  scsi: megaraid_sas: Target with invalid LUN ID is deleted during scan
  scsi: ufs: ufshpb: Fix a NULL check on list iterator
  scsi: sd: Clean up gendisk if device_add_disk() failed
  scsi: message: fusion: Remove redundant variable dmp
  scsi: mvsas: Add PCI ID of RocketRaid 2640
  scsi: sd: sd_read_cpr() requires VPD pages
  scsi: mpt3sas: Fail reset operation if config request timed out
  scsi: sym53c500_cs: Stop using struct scsi_pointer
  scsi: ufs: ufs-pci: Add support for Intel MTL
  scsi: mpt3sas: Fix mpt3sas_check_same_4gb_region() kdoc comment
  scsi: scsi_debug: Fix sdebug_blk_mq_poll() in_use_bm bitmap use
  scsi: bnx2i: Fix spelling mistake "mis-match" -> "mismatch"
  scsi: bnx2fc: Fix spelling mistake "mis-match" -> "mismatch"
  scsi: zorro7xx: Fix a resource leak in zorro7xx_remove_one()
  scsi: aic7xxx: Use standard PCI subsystem, subdevice defines
  scsi: ufs: qcom: Drop custom Android boot parameters
  scsi: core: sysfs: Remove comments that conflict with the actual logic
  scsi: hisi_sas: Remove stray fallthrough annotation
  scsi: virtio-scsi: Eliminate anonymous module_init & module_exit
  scsi: isci: Fix spelling mistake "doesnt" -> "doesn't"
  ...

2 years agoperf bench: Fix epoll bench to correct usage of affinity for machines with #CPUs...
Athira Rajeev [Wed, 6 Apr 2022 17:51:11 +0000 (23:21 +0530)]
perf bench: Fix epoll bench to correct usage of affinity for machines with #CPUs > 1K

The 'perf bench epoll' testcase fails on systems with more than 1K CPUs.

Testcase: perf bench epoll all

Result snippet:
<<>>
Run summary [PID 106497]: 1399 threads monitoring on 64 file-descriptors for 8 secs.

perf: pthread_create: No such file or directory
<<>>

In epoll benchmarks (ctl, wait) pthread_create is invoked in do_threads
from respective bench_epoll_*  function. Though the logs shows direct
failure from pthread_create, the actual failure is from
"sched_setaffinity" returning EINVAL (invalid argument).

This happens because the default mask size in glibc is 1024. To overcome
this 1024 CPUs mask size limitation of cpu_set_t, change the mask size
using the CPU_*_S macros.

Patch addresses this by fixing all the epoll benchmarks to use CPU_ALLOC
to allocate cpumask, CPU_ALLOC_SIZE for size, and CPU_SET_S to set the
mask.

Reported-by: Disha Goel <disgoel@linux.vnet.ibm.com>
Signed-off-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Tested-by: Disha Goel <disgoel@linux.vnet.ibm.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nageswara R Sastry <rnsastry@linux.ibm.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: https://lore.kernel.org/r/20220406175113.87881-3-atrajeev@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoperf bench: Fix futex bench to correct usage of affinity for machines with #CPUs...
Athira Rajeev [Wed, 6 Apr 2022 17:51:10 +0000 (23:21 +0530)]
perf bench: Fix futex bench to correct usage of affinity for machines with #CPUs > 1K

The 'perf bench futex' testcase fails on systems with more than 1K CPUs.

Testcase: perf bench futex all

Failure snippet:
<<>>Running futex/hash benchmark...

perf: pthread_create: No such file or directory
<<>>

All the futex benchmarks (ie hash, lock-api, requeue, wake,
wake-parallel), pthread_create is invoked in respective bench_futex_*
function. Though the logs shows direct failure from pthread_create,
strace logs showed that actual failure is from  "sched_setaffinity"
returning EINVAL (invalid argument).

This happens because the default mask size in glibc is 1024. To overcome
this 1024 CPUs mask size limitation of cpu_set_t, change the mask size
using the CPU_*_S macros.

Patch addresses this by fixing all the futex benchmarks to use CPU_ALLOC
to allocate cpumask, CPU_ALLOC_SIZE for size, and CPU_SET_S to set the
mask.

Reported-by: Disha Goel <disgoel@linux.vnet.ibm.com>
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Tested-by: Disha Goel <disgoel@linux.vnet.ibm.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nageswara R Sastry <rnsastry@linux.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: https://lore.kernel.org/r/20220406175113.87881-2-atrajeev@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoperf tools: Fix perf's libperf_print callback
Adrian Hunter [Fri, 8 Apr 2022 13:26:25 +0000 (16:26 +0300)]
perf tools: Fix perf's libperf_print callback

eprintf() does not expect va_list as the type of the 4th parameter.

Use veprintf() because it does.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Fixes: 428dab813a56ce94 ("libperf: Merge libperf_set_print() into libperf_init()")
Cc: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20220408132625.2451452-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoperf: arm-spe: Fix perf report --mem-mode
James Clark [Fri, 8 Apr 2022 14:40:56 +0000 (15:40 +0100)]
perf: arm-spe: Fix perf report --mem-mode

Since commit bb30acae4c4dacfa ("perf report: Bail out --mem-mode if mem
info is not available") "perf mem report" and "perf report --mem-mode"
don't allow opening the file unless one of the events has
PERF_SAMPLE_DATA_SRC set.

SPE doesn't have this set even though synthetic memory data is generated
after it is decoded. Fix this issue by setting DATA_SRC on SPE events.
This has no effect on the data collected because the SPE driver doesn't
do anything with that flag and doesn't generate samples.

Fixes: bb30acae4c4dacfa ("perf report: Bail out --mem-mode if mem info is not available")
Signed-off-by: James Clark <james.clark@arm.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20220408144056.1955535-1-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoperf unwind: Don't show unwind error messages when augmenting frame pointer stack
James Clark [Wed, 6 Apr 2022 14:56:51 +0000 (15:56 +0100)]
perf unwind: Don't show unwind error messages when augmenting frame pointer stack

Commit Fixes: b9f6fbb3b2c29736 ("perf arm64: Inject missing frames when
using 'perf record --call-graph=fp'") intended to add a 'best effort'
DWARF unwind that improved the frame pointer stack in most scenarios.

It's expected that the unwind will fail sometimes, but this shouldn't be
reported as an error. It only works when the return address can be
determined from the contents of the link register alone.

Fix the error shown when the unwinder requires extra registers by adding
a new flag that suppresses error messages. This flag is not set in the
normal --call-graph=dwarf unwind mode so that behavior is not changed.

Fixes: b9f6fbb3b2c29736 ("perf arm64: Inject missing frames when using 'perf record --call-graph=fp'")
Reported-by: John Garry <john.garry@huawei.com>
Signed-off-by: James Clark <james.clark@arm.com>
Tested-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexandre Truong <alexandre.truong@arm.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20220406145651.1392529-1-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agotools headers arm64: Sync arm64's cputype.h with the kernel sources
Arnaldo Carvalho de Melo [Sat, 9 Apr 2022 14:48:15 +0000 (11:48 -0300)]
tools headers arm64: Sync arm64's cputype.h with the kernel sources

To get the changes in:

  83bea32ac7ed37bb ("arm64: Add part number for Arm Cortex-A78AE")

That addresses this perf build warning:

  Warning: Kernel ABI header at 'tools/arch/arm64/include/asm/cputype.h' differs from latest version at 'arch/arm64/include/asm/cputype.h'
  diff -u tools/arch/arm64/include/asm/cputype.h arch/arm64/include/asm/cputype.h

Cc: Ali Saidi <alisaidi@amazon.com>
Cc: Andrew Kilroy <andrew.kilroy@arm.com>
Cc: Chanho Park <chanho61.park@samsung.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: James Clark <james.clark@arm.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Will Deacon <will@kernel.org>
Link: http://lore.kernel.org/lkml/
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoperf test tsc: Fix error message when not supported
Chengdong Li [Fri, 8 Apr 2022 08:47:48 +0000 (16:47 +0800)]
perf test tsc: Fix error message when not supported

By default `perf test tsc` does not return the error message when the
child process detected kernel does not support it. Instead, the child
process prints an error message to stderr, unfortunately stderr is
redirected to /dev/null when verbose <= 0.

This patch does:

- return TEST_SKIP to the parent process instead of TEST_OK when
  perf_read_tsc_conversion() is not supported.

- Add a new subtest of testing if TSC is supported on current
  architecture by moving exist code to a separate function.
  It avoids two places in test__perf_time_to_tsc() that return
  TEST_SKIP by doing this.

- Extend the test suite definition to contain above two subtests.
  Current test_suite and test_case structs do not support printing skip
  reason when the number of subtest less than 1. To print skip reason, it
  is necessary to extend current test suite definition.

Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chengdong Li <chengdongli@tencent.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@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>
Cc: likexu@tencent.com
Link: https://lore.kernel.org/r/20220408084748.43707-1-chengdongli@tencent.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoperf build: Don't use -ffat-lto-objects in the python feature test when building...
Arnaldo Carvalho de Melo [Thu, 7 Apr 2022 14:04:20 +0000 (11:04 -0300)]
perf build: Don't use -ffat-lto-objects in the python feature test when building with clang-13

Using -ffat-lto-objects in the python feature test when building with
clang-13 results in:

  clang-13: error: optimization flag '-ffat-lto-objects' is not supported [-Werror,-Wignored-optimization-argument]
  error: command '/usr/sbin/clang' failed with exit code 1
  cp: cannot stat '/tmp/build/perf/python_ext_build/lib/perf*.so': No such file or directory
  make[2]: *** [Makefile.perf:639: /tmp/build/perf/python/perf.so] Error 1

Noticed when building on a docker.io/library/archlinux:base container.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Fangrui Song <maskray@google.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Keeping <john@metanate.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoperf python: Fix probing for some clang command line options
Arnaldo Carvalho de Melo [Fri, 8 Apr 2022 13:08:07 +0000 (10:08 -0300)]
perf python: Fix probing for some clang command line options

The clang compiler complains about some options even without a source
file being available, while others require one, so use the simple
tools/build/feature/test-hello.c file.

Then check for the "is not supported" string in its output, in addition
to the "unknown argument" already being looked for.

This was noticed when building with clang-13 where -ffat-lto-objects
isn't supported and since we were looking just for "unknown argument"
and not providing a source code to clang, was mistakenly assumed as
being available and not being filtered to set of command line options
provided to clang, leading to a build failure.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Fangrui Song <maskray@google.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Keeping <john@metanate.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Sedat Dilek <sedat.dilek@gmail.com>
Link: http://lore.kernel.org/lkml/
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agotools build: Filter out options and warnings not supported by clang
Arnaldo Carvalho de Melo [Tue, 5 Apr 2022 13:33:21 +0000 (10:33 -0300)]
tools build: Filter out options and warnings not supported by clang

These make the feature check fail when using clang, so remove them just
like is done in tools/perf/Makefile.config to build perf itself.

Adding -Wno-compound-token-split-by-macro to tools/perf/Makefile.config
when building with clang is also necessary to avoid these warnings
turned into errors (-Werror):

    CC      /tmp/build/perf/util/scripting-engines/trace-event-perl.o
  In file included from util/scripting-engines/trace-event-perl.c:35:
  In file included from /usr/lib64/perl5/CORE/perl.h:4085:
  In file included from /usr/lib64/perl5/CORE/hv.h:659:
  In file included from /usr/lib64/perl5/CORE/hv_func.h:34:
  In file included from /usr/lib64/perl5/CORE/sbox32_hash.h:4:
  /usr/lib64/perl5/CORE/zaphod32_hash.h:150:5: error: '(' and '{' tokens introducing statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
      ZAPHOD32_SCRAMBLE32(state[0],0x9fade23b);
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  /usr/lib64/perl5/CORE/zaphod32_hash.h:80:38: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
  #define ZAPHOD32_SCRAMBLE32(v,prime) STMT_START {  \
                                       ^~~~~~~~~~
  /usr/lib64/perl5/CORE/perl.h:737:29: note: expanded from macro 'STMT_START'
  #   define STMT_START   (void)( /* gcc supports "({ STATEMENTS; })" */
                                ^
  /usr/lib64/perl5/CORE/zaphod32_hash.h:150:5: note: '{' token is here
      ZAPHOD32_SCRAMBLE32(state[0],0x9fade23b);
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  /usr/lib64/perl5/CORE/zaphod32_hash.h:80:49: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
  #define ZAPHOD32_SCRAMBLE32(v,prime) STMT_START {  \
                                                  ^
  /usr/lib64/perl5/CORE/zaphod32_hash.h:150:5: error: '}' and ')' tokens terminating statement expression appear in different macro expansion contexts [-Werror,-Wcompound-token-split-by-macro]
      ZAPHOD32_SCRAMBLE32(state[0],0x9fade23b);
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  /usr/lib64/perl5/CORE/zaphod32_hash.h:87:41: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
      v ^= (v>>23);                       \
                                          ^
  /usr/lib64/perl5/CORE/zaphod32_hash.h:150:5: note: ')' token is here
      ZAPHOD32_SCRAMBLE32(state[0],0x9fade23b);
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  /usr/lib64/perl5/CORE/zaphod32_hash.h:88:3: note: expanded from macro 'ZAPHOD32_SCRAMBLE32'
  } STMT_END
    ^~~~~~~~
  /usr/lib64/perl5/CORE/perl.h:738:21: note: expanded from macro 'STMT_END'
  #   define STMT_END     )
                          ^

Please refer to the discussion on the Link: tag below, where Nathan
clarifies the situation:

<quote>
acme> And then get to the problems at the end of this message, which seem
acme> similar to the problem described here:
acme>
acme> From  Nathan Chancellor <>
acme> Subject [PATCH] mwifiex: Remove unnecessary braces from HostCmd_SET_SEQ_NO_BSS_INFO
acme>
acme> https://lkml.org/lkml/2020/9/1/135
acme>
acme> So perhaps in this case its better to disable that
acme> -Werror,-Wcompound-token-split-by-macro when building with clang?

Yes, I think that is probably the best solution. As far as I can tell,
at least in this file and context, the warning appears harmless, as the
"create a GNU C statement expression from two different macros" is very
much intentional, based on the presence of PERL_USE_GCC_BRACE_GROUPS.
The warning is fixed in upstream Perl by just avoiding creating GNU C
statement expressions using STMT_START and STMT_END:

  https://github.com/Perl/perl5/issues/18780
  https://github.com/Perl/perl5/pull/18984

If I am reading the source code correctly, an alternative to disabling
the warning would be specifying -DPERL_GCC_BRACE_GROUPS_FORBIDDEN but it
seems like that might end up impacting more than just this site,
according to the issue discussion above.
</quote>

Based-on-a-patch-by: Sedat Dilek <sedat.dilek@gmail.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # Debian/Selfmade LLVM-14 (x86-64)
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Fangrui Song <maskray@google.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Keeping <john@metanate.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Link: http://lore.kernel.org/lkml/YkxWcYzph5pC1EK8@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agotools build: Use $(shell ) instead of `` to get embedded libperl's ccopts
Arnaldo Carvalho de Melo [Mon, 4 Apr 2022 20:28:48 +0000 (17:28 -0300)]
tools build: Use $(shell ) instead of `` to get embedded libperl's ccopts

Just like its done for ldopts and for both in tools/perf/Makefile.config.

Using `` to initialize PERL_EMBED_CCOPTS somehow precludes using:

  $(filter-out SOMETHING_TO_FILTER,$(PERL_EMBED_CCOPTS))

And we need to do it to allow for building with versions of clang where
some gcc options selected by distros are not available.

Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # Debian/Selfmade LLVM-14 (x86-64)
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Fangrui Song <maskray@google.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Keeping <john@metanate.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Link: http://lore.kernel.org/lkml/YktYX2OnLtyobRYD@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agotools include UAPI: Sync linux/vhost.h with the kernel sources
Arnaldo Carvalho de Melo [Tue, 14 Apr 2020 12:12:55 +0000 (09:12 -0300)]
tools include UAPI: Sync linux/vhost.h with the kernel sources

To get the changes in:

  b04d910af330b55e ("vdpa: support exposing the count of vqs to userspace")
  a61280ddddaa45f9 ("vdpa: support exposing the config size to userspace")

Silencing this perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/linux/vhost.h' differs from latest version at 'include/uapi/linux/vhost.h'
  diff -u tools/include/uapi/linux/vhost.h include/uapi/linux/vhost.h

  $ diff -u tools/include/uapi/linux/vhost.h include/uapi/linux/vhost.h
  --- tools/include/uapi/linux/vhost.h 2021-07-15 16:17:01.840818309 -0300
  +++ include/uapi/linux/vhost.h 2022-04-02 18:55:05.702522387 -0300
  @@ -150,4 +150,11 @@
   /* Get the valid iova range */
   #define VHOST_VDPA_GET_IOVA_RANGE _IOR(VHOST_VIRTIO, 0x78, \
         struct vhost_vdpa_iova_range)
  +
  +/* Get the config size */
  +#define VHOST_VDPA_GET_CONFIG_SIZE _IOR(VHOST_VIRTIO, 0x79, __u32)
  +
  +/* Get the count of all virtqueues */
  +#define VHOST_VDPA_GET_VQS_COUNT _IOR(VHOST_VIRTIO, 0x80, __u32)
  +
   #endif
  $ tools/perf/trace/beauty/vhost_virtio_ioctl.sh > before
  $ cp include/uapi/linux/vhost.h tools/include/uapi/linux/vhost.h
  $ tools/perf/trace/beauty/vhost_virtio_ioctl.sh > after
  $ diff -u before after
  --- before 2022-04-04 14:52:25.036375145 -0300
  +++ after 2022-04-04 14:52:31.906549976 -0300
  @@ -38,4 +38,6 @@
    [0x73] = "VDPA_GET_CONFIG",
    [0x76] = "VDPA_GET_VRING_NUM",
    [0x78] = "VDPA_GET_IOVA_RANGE",
  + [0x79] = "VDPA_GET_CONFIG_SIZE",
  + [0x80] = "VDPA_GET_VQS_COUNT",
   };
  $

Cc: Longpeng <longpeng2@huawei.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Link: https://lore.kernel.org/lkml/YksxoFcOARk%2Fldev@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2 years agoMerge tag 'block-5.18-2022-04-08' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 9 Apr 2022 04:58:03 +0000 (18:58 -1000)]
Merge tag 'block-5.18-2022-04-08' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Nothing major in here, just a few small fixes:

   - Small series of neglected drbd patches (Christoph, Lv, Xiaomeng)

   - Remove dead variable in cdrom (Enze)"

* tag 'block-5.18-2022-04-08' of git://git.kernel.dk/linux-block:
  drbd: set QUEUE_FLAG_STABLE_WRITES
  drbd: fix an invalid memory access caused by incorrect use of list iterator
  drbd: Fix five use after free bugs in get_initial_state
  cdrom: remove unused variable

2 years agoMerge tag 'io_uring-5.18-2022-04-08' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 9 Apr 2022 04:50:14 +0000 (18:50 -1000)]
Merge tag 'io_uring-5.18-2022-04-08' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "A bit bigger than usual post merge window, largely due to a revert and
  a fix of at what point files are assigned for requests.

  The latter fixing a linked request use case where a dependent link can
  rely on what file is assigned consistently.

  Summary:

   - 32-bit compat fix for IORING_REGISTER_IOWQ_AFF (Eugene)

   - File assignment fixes (me)

   - Revert of the NAPI poll addition from this merge window. The author
     isn't available right now to engage on this, so let's revert it and
     we can retry for the 5.19 release (me, Jakub)

   - Fix a timeout removal race (me)

   - File update and SCM fixes (Pavel)"

* tag 'io_uring-5.18-2022-04-08' of git://git.kernel.dk/linux-block:
  io_uring: fix race between timeout flush and removal
  io_uring: use nospec annotation for more indexes
  io_uring: zero tag on rsrc removal
  io_uring: don't touch scm_fp_list after queueing skb
  io_uring: nospec index for tags on files update
  io_uring: implement compat handling for IORING_REGISTER_IOWQ_AFF
  Revert "io_uring: Add support for napi_busy_poll"
  io_uring: drop the old style inflight file tracking
  io_uring: defer file assignment
  io_uring: propagate issue_flags state down to file assignment
  io_uring: move read/write file prep state into actual opcode handler
  io_uring: defer splice/tee file validity check until command issue
  io_uring: don't check req->file in io_fsync_prep()

2 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Linus Torvalds [Sat, 9 Apr 2022 04:29:02 +0000 (18:29 -1000)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "Several bug fixes for old bugs:

   - Welcome Leon as co-maintainer for RDMA so we are back to having two
     people

   - Some corner cases are fixed in mlx5's MR code

   - Long standing CM bug where a DREQ at the wrong time can result in a
     long timeout

   - Missing locking and refcounting in hf1"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/hfi1: Fix use-after-free bug for mm struct
  IB/rdmavt: add lock to call to rvt_error_qp to prevent a race condition
  IB/cm: Cancel mad on the DREQ event when the state is MRA_REP_RCVD
  RDMA/mlx5: Add a missing update of cache->last_add
  RDMA/mlx5: Don't remove cache MRs when a delay is needed
  MAINTAINERS: Update qib and hfi1 related drivers
  MAINTAINERS: Add Leon Romanovsky to RDMA maintainers

2 years agoMerge tag 'acpi-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Sat, 9 Apr 2022 04:23:02 +0000 (18:23 -1000)]
Merge tag 'acpi-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "These revert a problematic commit from the 5.17 development cycle and
  finalize the elimination of acpi_bus_get_device() that mostly took
  place during the recent merge window.

  Specifics:

   - Revert an ACPI processor driver change related to cache
     invalidation in acpi_idle_play_dead() that clearly was a mistake
     and introduced user-visible regressions (Akihiko Odaki).

   - Replace the last instance of acpi_bus_get_device() added during the
     recent merge window and drop the function to prevent more users of
     it from being added (Rafael Wysocki)"

* tag 'acpi-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: bus: Eliminate acpi_bus_get_device()
  Revert "ACPI: processor: idle: Only flush cache on entering C3"

2 years agoMerge tag 'linux-kselftest-kunit-fixes-5.18-rc2' of git://git.kernel.org/pub/scm...
Linus Torvalds [Sat, 9 Apr 2022 01:06:11 +0000 (15:06 -1000)]
Merge tag 'linux-kselftest-kunit-fixes-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull KUnit fix from Shuah Khan:
 "A single documentation fix to incorrect and outdated usage
  information"

* tag 'linux-kselftest-kunit-fixes-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  Documentation: kunit: fix path to .kunitconfig in start.rst

2 years agoMerge tag 'linux-kselftest-fixes-5.18-rc2' of git://git.kernel.org/pub/scm/linux...
Linus Torvalds [Sat, 9 Apr 2022 00:48:35 +0000 (14:48 -1000)]
Merge tag 'linux-kselftest-fixes-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull Kselftest fixes from Shuah Khan:
 "Build and run-times fixes to tests:

   - header dependencies

   - missing tear-downs to release allocated resources in assert paths

   - missing error messages when build fails

   - coccicheck and unused variable warnings"

* tag 'linux-kselftest-fixes-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/harness: Pass variant to teardown
  selftests/harness: Run TEARDOWN for ASSERT failures
  selftests: fix an unused variable warning in pidfd selftest
  selftests: fix header dependency for pid_namespace selftests
  selftests: x86: add 32bit build warnings for SUSE
  selftests/proc: fix array_size.cocci warning
  selftests/vDSO: fix array_size.cocci warning

2 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Sat, 9 Apr 2022 00:31:41 +0000 (14:31 -1000)]
Merge branch 'akpm' (patches from Andrew)

Merge fixes from Andrew Morton:
 "9 patches.

  Subsystems affected by this patch series: mm (migration, highmem,
  sparsemem, mremap, mempolicy, and memcg), lz4, mailmap, and
  MAINTAINERS"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  MAINTAINERS: add Tom as clang reviewer
  mm/list_lru.c: revert "mm/list_lru: optimize memcg_reparent_list_lru_node()"
  mailmap: update Vasily Averin's email address
  mm/mempolicy: fix mpol_new leak in shared_policy_replace
  mmmremap.c: avoid pointless invalidate_range_start/end on mremap(old_size=0)
  mm/sparsemem: fix 'mem_section' will never be NULL gcc 12 warning
  lz4: fix LZ4_decompress_safe_partial read out of bound
  highmem: fix checks in __kmap_local_sched_{in,out}
  mm: migrate: use thp_order instead of HPAGE_PMD_ORDER for new page allocation.

2 years agoMAINTAINERS: add Tom as clang reviewer
Tom Rix [Fri, 8 Apr 2022 20:09:16 +0000 (13:09 -0700)]
MAINTAINERS: add Tom as clang reviewer

I have been helping with build breaks and other clang things and would
like to help with the reviews.

Link: https://lkml.kernel.org/r/20220407175715.3378998-1-trix@redhat.com
Signed-off-by: Tom Rix <trix@redhat.com>
Acked-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agomm/list_lru.c: revert "mm/list_lru: optimize memcg_reparent_list_lru_node()"
Andrew Morton [Fri, 8 Apr 2022 20:09:13 +0000 (13:09 -0700)]
mm/list_lru.c: revert "mm/list_lru: optimize memcg_reparent_list_lru_node()"

Commit 405cc51fc104 ("mm/list_lru: optimize memcg_reparent_list_lru_node()")
has subtle races which are proving ugly to fix.  Revert the original
optimization.  If quantitative testing indicates that we have a
significant problem here then other implementations can be looked at.

Fixes: 405cc51fc104 ("mm/list_lru: optimize memcg_reparent_list_lru_node()")
Acked-by: Shakeel Butt <shakeelb@google.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Waiman Long <longman@redhat.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agomailmap: update Vasily Averin's email address
Vasily Averin [Fri, 8 Apr 2022 20:09:10 +0000 (13:09 -0700)]
mailmap: update Vasily Averin's email address

I'm moving to a @linux.dev account.  Map my old addresses.

Link: https://lkml.kernel.org/r/737c7c2b-cdab-63ee-be90-cb33316c9657@linux.dev
Signed-off-by: Vasily Averin <vasily.averin@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agomm/mempolicy: fix mpol_new leak in shared_policy_replace
Miaohe Lin [Fri, 8 Apr 2022 20:09:07 +0000 (13:09 -0700)]
mm/mempolicy: fix mpol_new leak in shared_policy_replace

If mpol_new is allocated but not used in restart loop, mpol_new will be
freed via mpol_put before returning to the caller.  But refcnt is not
initialized yet, so mpol_put could not do the right things and might
leak the unused mpol_new.  This would happen if mempolicy was updated on
the shared shmem file while the sp->lock has been dropped during the
memory allocation.

This issue could be triggered easily with the below code snippet if
there are many processes doing the below work at the same time:

  shmid = shmget((key_t)5566, 1024 * PAGE_SIZE, 0666|IPC_CREAT);
  shm = shmat(shmid, 0, 0);
  loop many times {
    mbind(shm, 1024 * PAGE_SIZE, MPOL_LOCAL, mask, maxnode, 0);
    mbind(shm + 128 * PAGE_SIZE, 128 * PAGE_SIZE, MPOL_DEFAULT, mask,
          maxnode, 0);
  }

Link: https://lkml.kernel.org/r/20220329111416.27954-1-linmiaohe@huawei.com
Fixes: 42288fe366c4 ("mm: mempolicy: Convert shared_policy mutex to spinlock")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: <stable@vger.kernel.org> [3.8]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agommmremap.c: avoid pointless invalidate_range_start/end on mremap(old_size=0)
Paolo Bonzini [Fri, 8 Apr 2022 20:09:04 +0000 (13:09 -0700)]
mmmremap.c: avoid pointless invalidate_range_start/end on mremap(old_size=0)

If an mremap() syscall with old_size=0 ends up in move_page_tables(), it
will call invalidate_range_start()/invalidate_range_end() unnecessarily,
i.e.  with an empty range.

This causes a WARN in KVM's mmu_notifier.  In the past, empty ranges
have been diagnosed to be off-by-one bugs, hence the WARNing.  Given the
low (so far) number of unique reports, the benefits of detecting more
buggy callers seem to outweigh the cost of having to fix cases such as
this one, where userspace is doing something silly.  In this particular
case, an early return from move_page_tables() is enough to fix the
issue.

Link: https://lkml.kernel.org/r/20220329173155.172439-1-pbonzini@redhat.com
Reported-by: syzbot+6bde52d89cfdf9f61425@syzkaller.appspotmail.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agomm/sparsemem: fix 'mem_section' will never be NULL gcc 12 warning
Waiman Long [Fri, 8 Apr 2022 20:09:01 +0000 (13:09 -0700)]
mm/sparsemem: fix 'mem_section' will never be NULL gcc 12 warning

The gcc 12 compiler reports a "'mem_section' will never be NULL" warning
on the following code:

    static inline struct mem_section *__nr_to_section(unsigned long nr)
    {
    #ifdef CONFIG_SPARSEMEM_EXTREME
        if (!mem_section)
                return NULL;
    #endif
        if (!mem_section[SECTION_NR_TO_ROOT(nr)])
                return NULL;
       :

It happens with CONFIG_SPARSEMEM_EXTREME off.  The mem_section definition
is

    #ifdef CONFIG_SPARSEMEM_EXTREME
    extern struct mem_section **mem_section;
    #else
    extern struct mem_section mem_section[NR_SECTION_ROOTS][SECTIONS_PER_ROOT];
    #endif

In the !CONFIG_SPARSEMEM_EXTREME case, mem_section is a static
2-dimensional array and so the check "!mem_section[SECTION_NR_TO_ROOT(nr)]"
doesn't make sense.

Fix this warning by moving the "!mem_section[SECTION_NR_TO_ROOT(nr)]"
check up inside the CONFIG_SPARSEMEM_EXTREME block and adding an
explicit NR_SECTION_ROOTS check to make sure that there is no
out-of-bound array access.

Link: https://lkml.kernel.org/r/20220331180246.2746210-1-longman@redhat.com
Fixes: 3e347261a80b ("sparsemem extreme implementation")
Signed-off-by: Waiman Long <longman@redhat.com>
Reported-by: Justin Forbes <jforbes@redhat.com>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Rafael Aquini <aquini@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agolz4: fix LZ4_decompress_safe_partial read out of bound
Guo Xuenan [Fri, 8 Apr 2022 20:08:58 +0000 (13:08 -0700)]
lz4: fix LZ4_decompress_safe_partial read out of bound

When partialDecoding, it is EOF if we've either filled the output buffer
or can't proceed with reading an offset for following match.

In some extreme corner cases when compressed data is suitably corrupted,
UAF will occur.  As reported by KASAN [1], LZ4_decompress_safe_partial
may lead to read out of bound problem during decoding.  lz4 upstream has
fixed it [2] and this issue has been disscussed here [3] before.

current decompression routine was ported from lz4 v1.8.3, bumping
lib/lz4 to v1.9.+ is certainly a huge work to be done later, so, we'd
better fix it first.

[1] https://lore.kernel.org/all/000000000000830d1205cf7f0477@google.com/
[2] https://github.com/lz4/lz4/commit/c5d6f8a8be3927c0bec91bcc58667a6cfad244ad#
[3] https://lore.kernel.org/all/CC666AE8-4CA4-4951-B6FB-A2EFDE3AC03B@fb.com/

Link: https://lkml.kernel.org/r/20211111105048.2006070-1-guoxuenan@huawei.com
Reported-by: syzbot+63d688f1d899c588fb71@syzkaller.appspotmail.com
Signed-off-by: Guo Xuenan <guoxuenan@huawei.com>
Reviewed-by: Nick Terrell <terrelln@fb.com>
Acked-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Cc: Yann Collet <cyan@fb.com>
Cc: Chengyang Fan <cy.fan@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agohighmem: fix checks in __kmap_local_sched_{in,out}
Max Filippov [Fri, 8 Apr 2022 20:08:55 +0000 (13:08 -0700)]
highmem: fix checks in __kmap_local_sched_{in,out}

When CONFIG_DEBUG_KMAP_LOCAL is enabled __kmap_local_sched_{in,out} check
that even slots in the tsk->kmap_ctrl.pteval are unmapped.  The slots are
initialized with 0 value, but the check is done with pte_none.  0 pte
however does not necessarily mean that pte_none will return true.  e.g.
on xtensa it returns false, resulting in the following runtime warnings:

 WARNING: CPU: 0 PID: 101 at mm/highmem.c:627 __kmap_local_sched_out+0x51/0x108
 CPU: 0 PID: 101 Comm: touch Not tainted 5.17.0-rc7-00010-gd3a1cdde80d2-dirty #13
 Call Trace:
   dump_stack+0xc/0x40
   __warn+0x8f/0x174
   warn_slowpath_fmt+0x48/0xac
   __kmap_local_sched_out+0x51/0x108
   __schedule+0x71a/0x9c4
   preempt_schedule_irq+0xa0/0xe0
   common_exception_return+0x5c/0x93
   do_wp_page+0x30e/0x330
   handle_mm_fault+0xa70/0xc3c
   do_page_fault+0x1d8/0x3c4
   common_exception+0x7f/0x7f

 WARNING: CPU: 0 PID: 101 at mm/highmem.c:664 __kmap_local_sched_in+0x50/0xe0
 CPU: 0 PID: 101 Comm: touch Tainted: G        W         5.17.0-rc7-00010-gd3a1cdde80d2-dirty #13
 Call Trace:
   dump_stack+0xc/0x40
   __warn+0x8f/0x174
   warn_slowpath_fmt+0x48/0xac
   __kmap_local_sched_in+0x50/0xe0
   finish_task_switch$isra$0+0x1ce/0x2f8
   __schedule+0x86e/0x9c4
   preempt_schedule_irq+0xa0/0xe0
   common_exception_return+0x5c/0x93
   do_wp_page+0x30e/0x330
   handle_mm_fault+0xa70/0xc3c
   do_page_fault+0x1d8/0x3c4
   common_exception+0x7f/0x7f

Fix it by replacing !pte_none(pteval) with pte_val(pteval) != 0.

Link: https://lkml.kernel.org/r/20220403235159.3498065-1-jcmvbkbc@gmail.com
Fixes: 5fbda3ecd14a ("sched: highmem: Store local kmaps in task struct")
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agomm: migrate: use thp_order instead of HPAGE_PMD_ORDER for new page allocation.
Zi Yan [Fri, 8 Apr 2022 20:08:52 +0000 (13:08 -0700)]
mm: migrate: use thp_order instead of HPAGE_PMD_ORDER for new page allocation.

Fix a VM_BUG_ON_FOLIO(folio_nr_pages(old) != nr_pages) crash.

With folios support, it is possible to have other than HPAGE_PMD_ORDER
THPs, in the form of folios, in the system.  Use thp_order() to correctly
determine the source page order during migration.

Link: https://lkml.kernel.org/r/20220404165325.1883267-1-zi.yan@sent.com
Link: https://lore.kernel.org/linux-mm/20220404132908.GA785673@u2004/
Fixes: d68eccad3706 ("mm/filemap: Allow large folios to be added to the page cache")
Reported-by: Naoya Horiguchi <naoya.horiguchi@linux.dev>
Signed-off-by: Zi Yan <ziy@nvidia.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agoio_uring: fix race between timeout flush and removal
Jens Axboe [Fri, 8 Apr 2022 17:08:58 +0000 (11:08 -0600)]
io_uring: fix race between timeout flush and removal

io_flush_timeouts() assumes the timeout isn't in progress of triggering
or being removed/canceled, so it unconditionally removes it from the
timeout list and attempts to cancel it.

Leave it on the list and let the normal timeout cancelation take care
of it.

Cc: stable@vger.kernel.org # 5.5+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agocxl/pci: Drop shadowed variable
Dan Williams [Fri, 8 Apr 2022 19:58:44 +0000 (12:58 -0700)]
cxl/pci: Drop shadowed variable

0day reports that wait_for_media_ready() declares an @rc variable twice.

>> drivers/cxl/pci.c:439:7: warning: Local variable 'rc' shadows outer variable [shadowVariable]
     int rc;
         ^
   drivers/cxl/pci.c:431:6: note: Shadowed declaration
    int rc, i;
        ^
   drivers/cxl/pci.c:439:7: note: Shadow variable
     int rc;
         ^

Cc: Randy Dunlap <rdunlap@infradead.org>
Fixes: 523e594d9cc0 ("cxl/pci: Implement wait for media active")
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Link: https://lore.kernel.org/r/164944636936.455177.14136200464724208233.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2 years agotools/testing/nvdimm: Fix security_init() symbol collision
Dan Williams [Mon, 4 Apr 2022 03:19:46 +0000 (20:19 -0700)]
tools/testing/nvdimm: Fix security_init() symbol collision

Starting with the new perf-event support in the nvdimm core, the
nfit_test mock module stops compiling. Rename its security_init() to
nfit_security_init().

tools/testing/nvdimm/test/nfit.c:1845:13: error: conflicting types for ‘security_init’; have ‘void(struct nfit_test *)’
 1845 | static void security_init(struct nfit_test *t)
      |             ^~~~~~~~~~~~~
In file included from ./include/linux/perf_event.h:61,
                 from ./include/linux/nd.h:11,
                 from ./drivers/nvdimm/nd-core.h:11,
                 from tools/testing/nvdimm/test/nfit.c:19:

Fixes: 9a61d0838cd0 ("drivers/nvdimm: Add nvdimm pmu structure")
Cc: Kajol Jain <kjain@linux.ibm.com>
Reviewed-by: Kajol Jain <kjain@linux.ibm.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Link: https://lore.kernel.org/r/164904238610.1330275.1889212115373993727.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2 years agoRDMA/hfi1: Fix use-after-free bug for mm struct
Douglas Miller [Fri, 8 Apr 2022 13:35:23 +0000 (09:35 -0400)]
RDMA/hfi1: Fix use-after-free bug for mm struct

Under certain conditions, such as MPI_Abort, the hfi1 cleanup code may
represent the last reference held on the task mm.
hfi1_mmu_rb_unregister() then drops the last reference and the mm is freed
before the final use in hfi1_release_user_pages().  A new task may
allocate the mm structure while it is still being used, resulting in
problems. One manifestation is corruption of the mmap_sem counter leading
to a hang in down_write().  Another is corruption of an mm struct that is
in use by another task.

Fixes: 3d2a9d642512 ("IB/hfi1: Ensure correct mm is used at all times")
Link: https://lore.kernel.org/r/20220408133523.122165.72975.stgit@awfm-01.cornelisnetworks.com
Cc: <stable@vger.kernel.org>
Signed-off-by: Douglas Miller <doug.miller@cornelisnetworks.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2 years agoMerge branch 'acpi-bus'
Rafael J. Wysocki [Fri, 8 Apr 2022 17:50:44 +0000 (19:50 +0200)]
Merge branch 'acpi-bus'

* acpi-bus:
  ACPI: bus: Eliminate acpi_bus_get_device()

2 years agoMerge tag 'nfs-for-5.18-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Fri, 8 Apr 2022 17:39:17 +0000 (07:39 -1000)]
Merge tag 'nfs-for-5.18-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client fixes from Trond Myklebust:
 "Stable fixes:

   - SUNRPC: Ensure we flush any closed sockets before xs_xprt_free()

  Bugfixes:

   - Fix an Oopsable condition due to SLAB_ACCOUNT setting in the
     NFSv4.2 xattr code.

   - Fix for open() using an file open mode of '3' in NFSv4

   - Replace readdir's use of xxhash() with hash_64()

   - Several patches to handle malloc() failure in SUNRPC"

* tag 'nfs-for-5.18-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  SUNRPC: Move the call to xprt_send_pagedata() out of xprt_sock_sendmsg()
  SUNRPC: svc_tcp_sendmsg() should handle errors from xdr_alloc_bvec()
  SUNRPC: Handle allocation failure in rpc_new_task()
  NFS: Ensure rpc_run_task() cannot fail in nfs_async_rename()
  NFSv4/pnfs: Handle RPC allocation errors in nfs4_proc_layoutget
  SUNRPC: Handle low memory situations in call_status()
  SUNRPC: Handle ENOMEM in call_transmit_status()
  NFSv4.2: Fix missing removal of SLAB_ACCOUNT on kmem_cache allocation
  SUNRPC: Ensure we flush any closed sockets before xs_xprt_free()
  NFS: Replace readdir's use of xxhash() with hash_64()
  SUNRPC: handle malloc failure in ->request_prepare
  NFSv4: fix open failure with O_ACCMODE flag
  Revert "NFSv4: Handle the special Linux file open access mode"

2 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 8 Apr 2022 17:09:17 +0000 (07:09 -1000)]
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "The two main things to note are:

   (1) The bulk of the diffstat is us reverting a horrible bodge we had
       in place to ease the merging of maple tree during the merge
       window (which turned out not to be needed, but anyway)

   (2) The TLB invalidation fix is done in core code, as suggested by
       (and Acked-by) Peter.

  Summary:

   - Revert temporary bodge in MTE coredumping to ease maple tree integration

   - Fix stack frame size warning reported with 64k pages

   - Fix stop_machine() race with instruction text patching

   - Ensure alternatives patching routines are not instrumented

   - Enable Spectre-BHB mitigation for Cortex-A78AE

   - Fix hugetlb TLB invalidation when contiguous hint is used

   - Minor perf driver fixes

   - Fix some typos"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  perf/imx_ddr: Fix undefined behavior due to shift overflowing the constant
  arm64: Add part number for Arm Cortex-A78AE
  arm64: patch_text: Fixup last cpu should be master
  tlb: hugetlb: Add more sizes to tlb_remove_huge_tlb_entry
  arm64: alternatives: mark patch_alternative() as `noinstr`
  perf: MARVELL_CN10K_DDR_PMU should depend on ARCH_THUNDER
  perf: qcom_l2_pmu: fix an incorrect NULL check on list iterator
  arm64: Fix comments in macro __init_el2_gicv3
  arm64: fix typos in comments
  arch/arm64: Fix topology initialization for core scheduling
  arm64: mte: Fix the stack frame size warning in mte_dump_tag_range()
  Revert "arm64: Change elfcore for_each_mte_vma() to use VMA iterator"

2 years agoMerge tag 'folio-5.18e' of git://git.infradead.org/users/willy/pagecache
Linus Torvalds [Fri, 8 Apr 2022 16:52:50 +0000 (06:52 -1000)]
Merge tag 'folio-5.18e' of git://git.infradead.org/users/willy/pagecache

Pull folio fixes from Matthew Wilcox:
 "Fewer bug reports than I was expecting from enabling large folios.

  One that doesn't show up on x86 but does on arm64, one that shows up
  with hugetlbfs memory failure testing and one that shows up with page
  migration, which it turns out I wasn't testing because my last NUMA
  machine died. Need to set up a qemu fake NUMA machine so I don't skip
  testing that in future.

  Summary:

   - Remove the migration code's assumptions about large pages being PMD
     sized

   - Don't call pmd_page() on a non-leaf PMD

   - Fix handling of hugetlbfs pages in page_vma_mapped_walk"

* tag 'folio-5.18e' of git://git.infradead.org/users/willy/pagecache:
  mm/rmap: Fix handling of hugetlbfs pages in page_vma_mapped_walk
  mm/mempolicy: Use vma_alloc_folio() in new_page()
  mm: Add vma_alloc_folio()
  mm/migrate: Use a folio in migrate_misplaced_transhuge_page()
  mm/migrate: Use a folio in alloc_migration_target()
  mm/huge_memory: Avoid calling pmd_page() on a non-leaf PMD

2 years agoMerge tag 'spi-fix-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brooni...
Linus Torvalds [Fri, 8 Apr 2022 16:45:38 +0000 (06:45 -1000)]
Merge tag 'spi-fix-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A small collection of fixes that have arrived since the merge window,
  the most noticable one is a fix for unmapping messages when the
  mapping was done with the struct device supplied to do the mapping
  overridden"

* tag 'spi-fix-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: bcm-qspi: fix MSPI only access with bcm_qspi_exec_mem_op()
  spi: cadence-quadspi: fix protocol setup for non-1-1-X operations
  spi: core: add dma_map_dev for __spi_unmap_msg()
  spi: mxic: Fix an error handling path in mxic_spi_probe()
  spi: rpc-if: Fix RPM imbalance in probe error path

2 years agoMerge tag 'regulator-fix-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 8 Apr 2022 16:42:03 +0000 (06:42 -1000)]
Merge tag 'regulator-fix-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator fixes from Mark Brown:
 "A few small driver specific fixes for v5.18, plus an update to the
  MAINTAINERS file"

* tag 'regulator-fix-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  MAINTAINERS: Fix reviewer info for a few ROHM ICs
  regulator: atc260x: Fix missing active_discharge_on setting
  regulator: rtq2134: Fix missing active_discharge_on setting
  regulator: wm8994: Add an off-on delay for WM8994 variant

2 years agoMerge tag 'mmc-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Linus Torvalds [Fri, 8 Apr 2022 16:37:11 +0000 (06:37 -1000)]
Merge tag 'mmc-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Improve API to make it clear that mmc_hw_reset() is for cards
   - Fixup support for writeback-cache for eMMC and SD
   - Check for errors after writes on SPI

  MMC host:
   - renesas_sdhi: A couple of fixes of TAP settings for eMMC HS400 mode
   - mmci_stm32: Fixup check of all elements in sg list
   - sdhci-xenon: Revert unnecessary fix for annoying 1.8V regulator warning"

* tag 'mmc-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: core: improve API to make clear mmc_hw_reset is for cards
  mmc: renesas_sdhi: don't overwrite TAP settings when HS400 tuning is complete
  mmc: renesas_sdhi: special 4tap settings only apply to HS400
  mmc: core: Fixup support for writeback-cache for eMMC and SD
  mmc: block: Check for errors after write on SPI
  mmc: mmci: stm32: correctly check all elements of sg list
  Revert "mmc: sdhci-xenon: fix annoying 1.8V regulator warning"

2 years agoMerge tag 'iommu-fix-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 8 Apr 2022 16:29:25 +0000 (06:29 -1000)]
Merge tag 'iommu-fix-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull iommu fix from Joerg Roedel:

 - Fix boot regression due to a NULL-ptr dereference on OMAP machines

* tag 'iommu-fix-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/omap: Fix regression in probe for NULL pointer dereference

2 years agoperf/imx_ddr: Fix undefined behavior due to shift overflowing the constant
Borislav Petkov [Tue, 5 Apr 2022 15:15:15 +0000 (17:15 +0200)]
perf/imx_ddr: Fix undefined behavior due to shift overflowing the constant

Fix:

  In file included from <command-line>:0:0:
  In function ‘ddr_perf_counter_enable’,
      inlined from ‘ddr_perf_irq_handler’ at drivers/perf/fsl_imx8_ddr_perf.c:651:2:
  ././include/linux/compiler_types.h:352:38: error: call to ‘__compiletime_assert_729’ \
declared with attribute error: FIELD_PREP: mask is not constant
    _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
...

See https://lore.kernel.org/r/YkwQ6%2BtIH8GQpuct@zn.tnic for the gory
details as to why it triggers with older gccs only.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Frank Li <Frank.li@nxp.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: linux-arm-kernel@lists.infradead.org
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20220405151517.29753-10-bp@alien8.de
Signed-off-by: Will Deacon <will@kernel.org>
2 years agoMAINTAINERS: Fix reviewer info for a few ROHM ICs
Matti Vaittinen [Fri, 8 Apr 2022 08:32:00 +0000 (11:32 +0300)]
MAINTAINERS: Fix reviewer info for a few ROHM ICs

The email backend used by ROHM keeps labeling patches as spam.
Additionally, there have been reports of some emails been completely
dropped. Finally also the email list (or shared inbox)
linux-power@fi.rohmeurope.com inadvertly stopped working and has not
been reviwed during the past few weeks.

Remove no longer working list 'linux-power' list-entry and switch my
email to use the personal gmail account instead of the company account.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Link: https://lore.kernel.org/r/Yk/zAHusOdf4+h06@dc73szyh141qn5ck3nwqy-3.rev.dnainternet.fi
Signed-off-by: Mark Brown <broonie@kernel.org>
2 years agoarm64: Add part number for Arm Cortex-A78AE
Chanho Park [Thu, 7 Apr 2022 09:11:28 +0000 (18:11 +0900)]
arm64: Add part number for Arm Cortex-A78AE

Add the MIDR part number info for the Arm Cortex-A78AE[1] and add it to
spectre-BHB affected list[2].

[1]: https://developer.arm.com/Processors/Cortex-A78AE
[2]: https://developer.arm.com/Arm%20Security%20Center/Spectre-BHB

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: James Morse <james.morse@arm.com>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220407091128.8700-1-chanho61.park@samsung.com
Signed-off-by: Will Deacon <will@kernel.org>
2 years agoarm64: patch_text: Fixup last cpu should be master
Guo Ren [Thu, 7 Apr 2022 07:33:20 +0000 (15:33 +0800)]
arm64: patch_text: Fixup last cpu should be master

These patch_text implementations are using stop_machine_cpuslocked
infrastructure with atomic cpu_count. The original idea: When the
master CPU patch_text, the others should wait for it. But current
implementation is using the first CPU as master, which couldn't
guarantee the remaining CPUs are waiting. This patch changes the
last CPU as the master to solve the potential risk.

Fixes: ae16480785de ("arm64: introduce interfaces to hotpatch kernel and module code")
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220407073323.743224-2-guoren@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
2 years agoiommu/omap: Fix regression in probe for NULL pointer dereference
Tony Lindgren [Thu, 31 Mar 2022 06:23:01 +0000 (09:23 +0300)]
iommu/omap: Fix regression in probe for NULL pointer dereference

Commit 3f6634d997db ("iommu: Use right way to retrieve iommu_ops") started
triggering a NULL pointer dereference for some omap variants:

__iommu_probe_device from probe_iommu_group+0x2c/0x38
probe_iommu_group from bus_for_each_dev+0x74/0xbc
bus_for_each_dev from bus_iommu_probe+0x34/0x2e8
bus_iommu_probe from bus_set_iommu+0x80/0xc8
bus_set_iommu from omap_iommu_init+0x88/0xcc
omap_iommu_init from do_one_initcall+0x44/0x24

This is caused by omap iommu probe returning 0 instead of ERR_PTR(-ENODEV)
as noted by Jason Gunthorpe <jgg@ziepe.ca>.

Looks like the regression already happened with an earlier commit
6785eb9105e3 ("iommu/omap: Convert to probe/release_device() call-backs")
that changed the function return type and missed converting one place.

Cc: Drew Fustini <dfustini@baylibre.com>
Cc: Lu Baolu <baolu.lu@linux.intel.com>
Cc: Suman Anna <s-anna@ti.com>
Suggested-by: Jason Gunthorpe <jgg@ziepe.ca>
Fixes: 6785eb9105e3 ("iommu/omap: Convert to probe/release_device() call-backs")
Fixes: 3f6634d997db ("iommu: Use right way to retrieve iommu_ops")
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Drew Fustini <dfustini@baylibre.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20220331062301.24269-1-tony@atomide.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2 years agommc: core: improve API to make clear mmc_hw_reset is for cards
Wolfram Sang [Fri, 8 Apr 2022 08:00:42 +0000 (10:00 +0200)]
mmc: core: improve API to make clear mmc_hw_reset is for cards

To make it unambiguous that mmc_hw_reset() is for cards and not for
controllers, we make the function argument mmc_card instead of mmc_host.
Also, all users are converted.

Suggested-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220408080045.6497-2-wsa+renesas@sang-engineering.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2 years agoMerge tag 'drm-fixes-2022-04-08' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 8 Apr 2022 05:27:39 +0000 (19:27 -1000)]
Merge tag 'drm-fixes-2022-04-08' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Main set of fixes for rc2, mostly amdgpu, but some dma-fence fixups as
  well, along with some other misc ones.

  dma-fence:
   - fix warning about fence containers
   - fix logic error in new fence merge code
   - handle empty dma_fence_arrays gracefully

  bridge:
   - Try all possible cases for bridge/panel detection.

  bindings:
   - Don't require input port for MIPI-DSI, and make width/height mandatory.

  fbdev:
   - Fix unregistering of framebuffers without device.

  nouveau:
   - Fix a crash when booting with nouveau on tegra.

  amdgpu:
   - GFX 10.3.7 fixes
   - noretry updates
   - VCN fixes
   - TMDS fix
   - zstate fix for freesync video
   - DCN 3.1.5 fix
   - Display stack size fix
   - Audio fix
   - DCN 3.1 pstate fix
   - TMZ VCN fix
   - APU passthrough fix
   - Misc other fixes
   - VCN 3.0 fixes
   - Misc display fixes
   - GC 10.3 golden register fix
   - Suspend fix
   - SMU 10 fix

  amdkfd:
   - Error handling fix
   - xgmi p2p fix
   - HWS VMIDs fix
   - Event fix

  panel:
   - ili9341: Fix optional regulator handling

  imx:
   - Catch an EDID allocation failure in imx-ldb
   - fix a leaked drm display mode on DT parsing error in parallel-display
   - properly remove the dw_hdmi bridge in case the component_add fails in dw_hdmi-imx
   - fix the IPU clock frequency debug printout in ipu-di"

* tag 'drm-fixes-2022-04-08' of git://anongit.freedesktop.org/drm/drm: (61 commits)
  dt-bindings: display: panel: mipi-dbi-spi: Make width-mm/height-mm mandatory
  fbdev: Fix unregistering of framebuffers without device
  drm/amdgpu/smu10: fix SoC/fclk units in auto mode
  drm/amd/display: update dcn315 clock table read
  drm/amdgpu/display: change pipe policy for DCN 2.1
  drm/amd/display: Add configuration options for AUX wake work around.
  drm/amd/display: remove assert for odm transition case
  drm/amdgpu: don't use BACO for reset in S3
  drm/amd/display: Fix by adding FPU protection for dcn30_internal_validate_bw
  drm/amdkfd: Create file descriptor after client is added to smi_clients list
  drm/amdgpu: Sync up header and implementation to use the same parameter names
  drm/amdgpu: fix incorrect GCR_GENERAL_CNTL address
  amd/display: set backlight only if required
  drm/amd/display: Fix allocate_mst_payload assert on resume
  drm/amd/display: Revert FEC check in validation
  drm/amd/display: Add work around for AUX failure on wake.
  drm/amd/display: Clear optc false state when disable otg
  drm/amd/display: Enable power gating before init_pipes
  drm/amd/display: Remove redundant dsc power gating from init_hw
  drm/amd/display: Correct Slice reset calculation
  ...

2 years agoMerge tag '5.18-rc1-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Fri, 8 Apr 2022 05:16:49 +0000 (19:16 -1000)]
Merge tag '5.18-rc1-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs client fixes from Steve French:

 - reconnect fixes: one for DFS and one to avoid a reconnect race

 - small change to deal with upcoming behavior change of list iterators

* tag '5.18-rc1-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: update internal module number
  cifs: force new session setup and tcon for dfs
  cifs: remove check of list iterator against head past the loop body
  cifs: fix potential race with cifsd thread

2 years agoMerge tag 'net-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Fri, 8 Apr 2022 05:01:47 +0000 (19:01 -1000)]
Merge tag 'net-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from bpf and netfilter.

  Current release - new code bugs:

   - mctp: correct mctp_i2c_header_create result

   - eth: fungible: fix reference to __udivdi3 on 32b builds

   - eth: micrel: remove latencies support lan8814

  Previous releases - regressions:

   - bpf: resolve to prog->aux->dst_prog->type only for BPF_PROG_TYPE_EXT

   - vrf: fix packet sniffing for traffic originating from ip tunnels

   - rxrpc: fix a race in rxrpc_exit_net()

   - dsa: revert "net: dsa: stop updating master MTU from master.c"

   - eth: ice: fix MAC address setting

  Previous releases - always broken:

   - tls: fix slab-out-of-bounds bug in decrypt_internal

   - bpf: support dual-stack sockets in bpf_tcp_check_syncookie

   - xdp: fix coalescing for page_pool fragment recycling

   - ovs: fix leak of nested actions

   - eth: sfc:
      - add missing xdp queue reinitialization
      - fix using uninitialized xdp tx_queue

   - eth: ice:
      - clear default forwarding VSI during VSI release
      - fix broken IFF_ALLMULTI handling
      - synchronize_rcu() when terminating rings

   - eth: qede: confirm skb is allocated before using

   - eth: aqc111: fix out-of-bounds accesses in RX fixup

   - eth: slip: fix NPD bug in sl_tx_timeout()"

* tag 'net-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (61 commits)
  drivers: net: slip: fix NPD bug in sl_tx_timeout()
  bpf: Adjust bpf_tcp_check_syncookie selftest to test dual-stack sockets
  bpf: Support dual-stack sockets in bpf_tcp_check_syncookie
  myri10ge: fix an incorrect free for skb in myri10ge_sw_tso
  net: usb: aqc111: Fix out-of-bounds accesses in RX fixup
  qede: confirm skb is allocated before using
  net: ipv6mr: fix unused variable warning with CONFIG_IPV6_PIMSM_V2=n
  net: phy: mscc-miim: reject clause 45 register accesses
  net: axiemac: use a phandle to reference pcs_phy
  dt-bindings: net: add pcs-handle attribute
  net: axienet: factor out phy_node in struct axienet_local
  net: axienet: setup mdio unconditionally
  net: sfc: fix using uninitialized xdp tx_queue
  rxrpc: fix a race in rxrpc_exit_net()
  net: openvswitch: fix leak of nested actions
  net: ethernet: mv643xx: Fix over zealous checking of_get_mac_address()
  net: openvswitch: don't send internal clone attribute to the userspace.
  net: micrel: Fix KS8851 Kconfig
  ice: clear cmd_type_offset_bsz for TX rings
  ice: xsk: fix VSI state check in ice_xsk_wakeup()
  ...

2 years agoMerge tag 'drm-misc-fixes-2022-04-07' of git://anongit.freedesktop.org/drm/drm-misc...
Dave Airlie [Thu, 7 Apr 2022 23:22:07 +0000 (09:22 +1000)]
Merge tag 'drm-misc-fixes-2022-04-07' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

drm-misc-fixes for v5.18-rc2:
- Fix a crash when booting with nouveau on tegra.
- Don't require input port for MIPI-DSI, and make width/height mandatory.
- Fix unregistering of framebuffers without device.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/58fa2262-3eb6-876d-7157-ab7a135696b7@linux.intel.com
2 years agoMerge tag 'drm-misc-next-fixes-2022-04-07' of git://anongit.freedesktop.org/drm/drm...
Dave Airlie [Thu, 7 Apr 2022 23:13:33 +0000 (09:13 +1000)]
Merge tag 'drm-misc-next-fixes-2022-04-07' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

drm-misc-next-fixes for v5.18-rc2:
- fix warning about fence containers
- fix logic error in new fence merge code
- handle empty dma_fence_arrays gracefully
- Try all possible cases for bridge/panel detection.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/3b8e6439-612e-f640-e380-51e834393e94@linux.intel.com
2 years agoSUNRPC: Move the call to xprt_send_pagedata() out of xprt_sock_sendmsg()
Trond Myklebust [Thu, 7 Apr 2022 02:51:58 +0000 (22:51 -0400)]
SUNRPC: Move the call to xprt_send_pagedata() out of xprt_sock_sendmsg()

The client and server have different requirements for their memory
allocation, so move the allocation of the send buffer out of the socket
send code that is common to both.

Reported-by: NeilBrown <neilb@suse.de>
Fixes: b2648015d452 ("SUNRPC: Make the rpciod and xprtiod slab allocation modes consistent")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2 years agoSUNRPC: svc_tcp_sendmsg() should handle errors from xdr_alloc_bvec()
Trond Myklebust [Thu, 7 Apr 2022 18:10:23 +0000 (14:10 -0400)]
SUNRPC: svc_tcp_sendmsg() should handle errors from xdr_alloc_bvec()

The allocation is done with GFP_KERNEL, but it could still fail in a low
memory situation.

Fixes: 4a85a6a3320b ("SUNRPC: Handle TCP socket sends with kernel_sendpage() again")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2 years agoSUNRPC: Handle allocation failure in rpc_new_task()
Trond Myklebust [Thu, 7 Apr 2022 02:36:19 +0000 (22:36 -0400)]
SUNRPC: Handle allocation failure in rpc_new_task()

If the call to rpc_alloc_task() fails, then ensure that the calldata is
released, and that rpc_run_task() and rpc_run_bc_task() bail out early.

Reported-by: NeilBrown <neilb@suse.de>
Fixes: 910ad38697d9 ("NFS: Fix memory allocation in rpc_alloc_task()")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2 years agoNFS: Ensure rpc_run_task() cannot fail in nfs_async_rename()
Trond Myklebust [Thu, 7 Apr 2022 02:34:35 +0000 (22:34 -0400)]
NFS: Ensure rpc_run_task() cannot fail in nfs_async_rename()

Ensure the call to rpc_run_task() cannot fail by preallocating the
rpc_task.

Fixes: 910ad38697d9 ("NFS: Fix memory allocation in rpc_alloc_task()")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2 years agoNFSv4/pnfs: Handle RPC allocation errors in nfs4_proc_layoutget
Trond Myklebust [Thu, 7 Apr 2022 02:33:19 +0000 (22:33 -0400)]
NFSv4/pnfs: Handle RPC allocation errors in nfs4_proc_layoutget

If rpc_run_task() fails due to an allocation error, then bail out early.

Fixes: 910ad38697d9 ("NFS: Fix memory allocation in rpc_alloc_task()")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2 years agoSUNRPC: Handle low memory situations in call_status()
Trond Myklebust [Thu, 7 Apr 2022 13:50:19 +0000 (09:50 -0400)]
SUNRPC: Handle low memory situations in call_status()

We need to handle ENFILE, ENOBUFS, and ENOMEM, because
xprt_wake_pending_tasks() can be called with any one of these due to
socket creation failures.

Fixes: b61d59fffd3e ("SUNRPC: xs_tcp_connect_worker{4,6}: merge common code")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2 years agoSUNRPC: Handle ENOMEM in call_transmit_status()
Trond Myklebust [Thu, 7 Apr 2022 03:18:57 +0000 (23:18 -0400)]
SUNRPC: Handle ENOMEM in call_transmit_status()

Both call_transmit() and call_bc_transmit() can now return ENOMEM, so
let's make sure that we handle the errors gracefully.

Fixes: 0472e4766049 ("SUNRPC: Convert socket page send code to use iov_iter()")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2 years agoNFSv4.2: Fix missing removal of SLAB_ACCOUNT on kmem_cache allocation
Muchun Song [Fri, 1 Apr 2022 02:59:05 +0000 (10:59 +0800)]
NFSv4.2: Fix missing removal of SLAB_ACCOUNT on kmem_cache allocation

The commit 5c60e89e71f8 ("NFSv4.2: Fix up an invalid combination of memory
allocation flags") has stripped GFP_KERNEL_ACCOUNT down to GFP_KERNEL,
however, it forgot to remove SLAB_ACCOUNT from kmem_cache allocation.
It means that memory is still limited by kmemcg.  This patch also fix a
NULL pointer reference issue [1] reported by NeilBrown.

Link: https://lore.kernel.org/all/164870069595.25542.17292003658915487357@noble.neil.brown.name/
Fixes: 5c60e89e71f8 ("NFSv4.2: Fix up an invalid combination of memory allocation flags")
Fixes: 5abc1e37afa0 ("mm: list_lru: allocate list_lru_one only when needed")
Reported-by: NeilBrown <neilb@suse.de>
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2 years agoSUNRPC: Ensure we flush any closed sockets before xs_xprt_free()
Trond Myklebust [Sun, 3 Apr 2022 19:58:11 +0000 (15:58 -0400)]
SUNRPC: Ensure we flush any closed sockets before xs_xprt_free()

We must ensure that all sockets are closed before we call xprt_free()
and release the reference to the net namespace. The problem is that
calling fput() will defer closing the socket until delayed_fput() gets
called.
Let's fix the situation by allowing rpciod and the transport teardown
code (which runs on the system wq) to call __fput_sync(), and directly
close the socket.

Reported-by: Felix Fu <foyjog@gmail.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Fixes: a73881c96d73 ("SUNRPC: Fix an Oops in udp_poll()")
Cc: stable@vger.kernel.org # 5.1.x: 3be232f11a3c: SUNRPC: Prevent immediate close+reconnect
Cc: stable@vger.kernel.org # 5.1.x: 89f42494f92f: SUNRPC: Don't call connect() more than once on a TCP socket
Cc: stable@vger.kernel.org # 5.1.x
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2 years agoNFS: Replace readdir's use of xxhash() with hash_64()
Trond Myklebust [Thu, 31 Mar 2022 00:00:07 +0000 (20:00 -0400)]
NFS: Replace readdir's use of xxhash() with hash_64()

Both xxhash() and hash_64() appear to give similarly low collision
rates with a standard linearly increasing readdir offset. They both give
similarly higher collision rates when applied to ext4's offsets.

So switch to using the standard hash_64().

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2 years agoio_uring: use nospec annotation for more indexes
Pavel Begunkov [Thu, 7 Apr 2022 13:05:05 +0000 (14:05 +0100)]
io_uring: use nospec annotation for more indexes

There are still several places that using pre array_index_nospec()
indexes, fix them up.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/b01ef5ee83f72ed35ad525912370b729f5d145f4.1649336342.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agoio_uring: zero tag on rsrc removal
Pavel Begunkov [Thu, 7 Apr 2022 13:05:04 +0000 (14:05 +0100)]
io_uring: zero tag on rsrc removal

Automatically default rsrc tag in io_queue_rsrc_removal(), it's safer
than leaving it there and relying on the rest of the code to behave and
not use it.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/1cf262a50df17478ea25b22494dcc19f3a80301f.1649336342.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agoio_uring: don't touch scm_fp_list after queueing skb
Pavel Begunkov [Wed, 6 Apr 2022 11:43:58 +0000 (12:43 +0100)]
io_uring: don't touch scm_fp_list after queueing skb

It's safer to not touch scm_fp_list after we queued an skb to which it
was assigned, there might be races lurking if we screw subtle sync
guarantees on the io_uring side.

Fixes: 6b06314c47e14 ("io_uring: add file set registration")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agoio_uring: nospec index for tags on files update
Pavel Begunkov [Wed, 6 Apr 2022 11:43:57 +0000 (12:43 +0100)]
io_uring: nospec index for tags on files update

Don't forget to array_index_nospec() for indexes before updating rsrc
tags in __io_sqe_files_update(), just use already safe and precalculated
index @i.

Fixes: c3bdad0271834 ("io_uring: add generic rsrc update with tags")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agoio_uring: implement compat handling for IORING_REGISTER_IOWQ_AFF
Eugene Syromiatnikov [Wed, 6 Apr 2022 11:55:33 +0000 (13:55 +0200)]
io_uring: implement compat handling for IORING_REGISTER_IOWQ_AFF

Similarly to the way it is done im mbind syscall.

Cc: stable@vger.kernel.org # 5.14
Fixes: fe76421d1da1dcdb ("io_uring: allow user configurable IO thread CPU affinity")
Signed-off-by: Eugene Syromiatnikov <esyr@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agoRevert "io_uring: Add support for napi_busy_poll"
Jens Axboe [Tue, 5 Apr 2022 16:31:43 +0000 (10:31 -0600)]
Revert "io_uring: Add support for napi_busy_poll"

This reverts commit adc8682ec69012b68d5ab7123e246d2ad9a6f94b.

There's some discussion on the API not being as good as it can be.
Rather than ship something and be stuck with it forever, let's revert
the NAPI support for now and work on getting something sorted out
for the next kernel release instead.

Link: https://lore.kernel.org/io-uring/b7bbc124-8502-0ee9-d4c8-7c41b4487264@kernel.dk/
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agoio_uring: drop the old style inflight file tracking
Jens Axboe [Thu, 31 Mar 2022 18:38:46 +0000 (12:38 -0600)]
io_uring: drop the old style inflight file tracking

io_uring tracks requests that are referencing an io_uring descriptor to
be able to cancel without worrying about loops in the references. Since
we now assign the file at execution time, the easier approach is to drop
a potentially problematic reference before we punt the request. This
eliminates the need to special case these types of files beyond just
marking them as such, and simplifies cancelation quite a bit.

This also fixes a recent issue where an async punted tee operation would
with the io_uring descriptor as the output file would crash when
attempting to get a reference to the file from the io-wq worker. We
could have worked around that, but this is the much cleaner fix.

Fixes: 6bf9c47a3989 ("io_uring: defer file assignment")
Reported-by: syzbot+c4b9303500a21750b250@syzkaller.appspotmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agoio_uring: defer file assignment
Jens Axboe [Tue, 29 Mar 2022 16:10:08 +0000 (10:10 -0600)]
io_uring: defer file assignment

If an application uses direct open or accept, it knows in advance what
direct descriptor value it will get as it picks it itself. This allows
combined requests such as:

sqe = io_uring_get_sqe(ring);
io_uring_prep_openat_direct(sqe, ..., file_slot);
sqe->flags |= IOSQE_IO_LINK | IOSQE_CQE_SKIP_SUCCESS;

sqe = io_uring_get_sqe(ring);
io_uring_prep_read(sqe,file_slot, buf, buf_size, 0);
sqe->flags |= IOSQE_FIXED_FILE;

io_uring_submit(ring);

where we prepare both a file open and read, and only get a completion
event for the read when both have completed successfully.

Currently links are fully prepared before the head is issued, but that
fails if the dependent link needs a file assigned that isn't valid until
the head has completed.

Conversely, if the same chain is performed but the fixed file slot is
already valid, then we would be unexpectedly returning data from the
old file slot rather than the newly opened one. Make sure we're
consistent here.

Allow deferral of file setup, which makes this documented case work.

Cc: stable@vger.kernel.org # v5.15+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agoio_uring: propagate issue_flags state down to file assignment
Jens Axboe [Mon, 4 Apr 2022 23:18:43 +0000 (17:18 -0600)]
io_uring: propagate issue_flags state down to file assignment

We'll need this in a future patch, when we could be assigning the file
after the prep stage. While at it, get rid of the io_file_get() helper,
it just makes the code harder to read.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 years agoMerge tag 'hyperv-fixes-signed-20220407' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 7 Apr 2022 16:35:34 +0000 (06:35 -1000)]
Merge tag 'hyperv-fixes-signed-20220407' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

Pull hyperv fixes from Wei Liu:

 - Correctly propagate coherence information for VMbus devices (Michael
   Kelley)

 - Disable balloon and memory hot-add on ARM64 temporarily (Boqun Feng)

 - Use barrier to prevent reording when reading ring buffer (Michael
   Kelley)

 - Use virt_store_mb in favour of smp_store_mb (Andrea Parri)

 - Fix VMbus device object initialization (Andrea Parri)

 - Deactivate sysctl_record_panic_msg on isolated guest (Andrea Parri)

 - Fix a crash when unloading VMbus module (Guilherme G. Piccoli)

* tag 'hyperv-fixes-signed-20220407' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  Drivers: hv: vmbus: Replace smp_store_mb() with virt_store_mb()
  Drivers: hv: balloon: Disable balloon and hot-add accordingly
  Drivers: hv: balloon: Support status report for larger page sizes
  Drivers: hv: vmbus: Prevent load re-ordering when reading ring buffer
  PCI: hv: Propagate coherence from VMbus device to PCI device
  Drivers: hv: vmbus: Propagate VMbus coherence to each VMbus device
  Drivers: hv: vmbus: Fix potential crash on module unload
  Drivers: hv: vmbus: Fix initialization of device object in vmbus_device_register()
  Drivers: hv: vmbus: Deactivate sysctl_record_panic_msg by default in isolated guests

2 years agoMerge tag 'random-5.18-rc2-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 7 Apr 2022 16:02:55 +0000 (06:02 -1000)]
Merge tag 'random-5.18-rc2-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random

Pull random number generator fixes from Jason Donenfeld:

 - Another fixup to the fast_init/crng_init split, this time in how much
   entropy is being credited, from Jan Varho.

 - As discussed, we now opportunistically call try_to_generate_entropy()
   in /dev/urandom reads, as a replacement for the reverted commit. I
   opted to not do the more invasive wait_for_random_bytes() change at
   least for now, preferring to do something smaller and more obvious
   for the time being, but maybe that can be revisited as things evolve
   later.

 - Userspace can use FUSE or userfaultfd or simply move a process to
   idle priority in order to make a read from the random device never
   complete, which breaks forward secrecy, fixed by overwriting
   sensitive bytes early on in the function.

 - Jann Horn noticed that /dev/urandom reads were only checking for
   pending signals if need_resched() was true, a bug going back to the
   genesis commit, now fixed by always checking for signal_pending() and
   calling cond_resched(). This explains various noticeable signal
   delivery delays I've seen in programs over the years that do long
   reads from /dev/urandom.

 - In order to be more like other devices (e.g. /dev/zero) and to
   mitigate the impact of fixing the above bug, which has been around
   forever (users have never really needed to check the return value of
   read() for medium-sized reads and so perhaps many didn't), we now
   move signal checking to the bottom part of the loop, and do so every
   PAGE_SIZE-bytes.

* tag 'random-5.18-rc2-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random:
  random: check for signals every PAGE_SIZE chunk of /dev/[u]random
  random: check for signal_pending() outside of need_resched() check
  random: do not allow user to keep crng key around on stack
  random: opportunistically initialize on /dev/urandom reads
  random: do not split fast init input in add_hwgenerator_randomness()

2 years agoMerge tag 'ata-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal...
Linus Torvalds [Thu, 7 Apr 2022 15:56:54 +0000 (05:56 -1000)]
Merge tag 'ata-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata

Pull ata fixes from Damien Le Moal:

 - Fix a compilation warning due to an uninitialized variable in
   ata_sff_lost_interrupt(), from me.

 - Fix invalid internal command tag handling in the sata_dwc_460ex
   driver, from Christian.

 - Disable READ LOG DMA EXT with Samsung 840 EVO SSDs as this command
   causes the drives to hang, from Christian.

 - Change the config option CONFIG_SATA_LPM_POLICY back to its original
   name CONFIG_SATA_LPM_MOBILE_POLICY to avoid potential problems with
   users losing their configuration (as discussed during the merge
   window), from Mario.

* tag 'ata-5.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
  ata: ahci: Rename CONFIG_SATA_LPM_POLICY configuration item back
  ata: libata-core: Disable READ LOG DMA EXT for Samsung 840 EVOs
  ata: sata_dwc_460ex: Fix crash due to OOB write
  ata: libata-sff: Fix compilation warning in ata_sff_lost_interrupt()

2 years agomm/rmap: Fix handling of hugetlbfs pages in page_vma_mapped_walk
zhenwei pi [Thu, 7 Apr 2022 06:40:08 +0000 (14:40 +0800)]
mm/rmap: Fix handling of hugetlbfs pages in page_vma_mapped_walk

page_mapped_in_vma() sets nr_pages to 1, which is usually correct as we
only want to know about the precise page and not about other pages in
the folio.  However, hugetlbfs does want to know about the entire hpage,
and using nr_pages to get the size of the hpage is wrong.  We could
change page_mapped_in_vma() to special-case hugetlbfs pages, but it's
better to ignore nr_pages in page_vma_mapped_walk() and get the size
from the VMA instead.

Fixes: 2aff7a4755bed ("mm: Convert page_vma_mapped_walk to work on PFNs")
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
[edit commit message, use hstate directly]

2 years agomm/mempolicy: Use vma_alloc_folio() in new_page()
Matthew Wilcox (Oracle) [Mon, 4 Apr 2022 19:23:39 +0000 (15:23 -0400)]
mm/mempolicy: Use vma_alloc_folio() in new_page()

Simplify new_page() by unifying the THP and base page cases, and
handle orders other than 0 and HPAGE_PMD_ORDER correctly.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
2 years agomm: Add vma_alloc_folio()
Matthew Wilcox (Oracle) [Mon, 4 Apr 2022 19:11:04 +0000 (15:11 -0400)]
mm: Add vma_alloc_folio()

This wrapper around alloc_pages_vma() calls prep_transhuge_page(),
removing the obligation from the caller.  This is in the same spirit
as __folio_alloc().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
2 years agomm/migrate: Use a folio in migrate_misplaced_transhuge_page()
Matthew Wilcox (Oracle) [Tue, 6 Jul 2021 14:50:39 +0000 (10:50 -0400)]
mm/migrate: Use a folio in migrate_misplaced_transhuge_page()

Unify alloc_misplaced_dst_page() and alloc_misplaced_dst_page_thp().
Removes an assumption that compound pages are HPAGE_PMD_ORDER.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>