This is the start of the stable review cycle for the 5.15.40 release.
There are 21 patches in this series, all will be posted as a response
to this one.  If anyone has any issues with these being applied, please
let me know.

Responses should be made by Sun, 15 May 2022 14:22:19 +0000.
Anything received after that time might be too late.

The whole patch series can be found in one patch at:
	https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.15.40-rc1.gz
or in the git tree and branch at:
	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y
and the diffstat can be found below.

thanks,

greg k-h

-------------
Pseudo-Shortlog of commits:

Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Linux 5.15.40-rc1

Peter Xu <peterx@redhat.com>
    mm: fix invalid page pointer returned with FOLL_PIN gups

Miaohe Lin <linmiaohe@huawei.com>
    mm/mlock: fix potential imbalanced rlimit ucounts adjustment

Naoya Horiguchi <naoya.horiguchi@nec.com>
    mm/hwpoison: fix error page recovered but reported "not recovered"

Muchun Song <songmuchun@bytedance.com>
    mm: userfaultfd: fix missing cache flush in mcopy_atomic_pte() and __mcopy_atomic()

Muchun Song <songmuchun@bytedance.com>
    mm: shmem: fix missing cache flush in shmem_mfill_atomic_pte()

Muchun Song <songmuchun@bytedance.com>
    mm: hugetlb: fix missing cache flush in copy_huge_page_from_user()

Muchun Song <songmuchun@bytedance.com>
    mm: fix missing cache flush for all tail pages of compound page

Jan Kara <jack@suse.cz>
    udf: Avoid using stale lengthOfImpUse

Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org>
    rfkill: uapi: fix RFKILL_IOCTL_MAX_SIZE ioctl request definition

Itay Iellin <ieitayie@gmail.com>
    Bluetooth: Fix the creation of hdev->name

Peter Zijlstra <peterz@infradead.org>
    objtool: Fix SLS validation for kcov tail-call replacement

Peter Zijlstra <peterz@infradead.org>
    crypto: x86/poly1305 - Fixup SLS

Borislav Petkov <bp@suse.de>
    kvm/emulate: Fix SETcc emulation function offsets with SLS

Arnaldo Carvalho de Melo <acme@redhat.com>
    tools arch: Update arch/x86/lib/mem{cpy,set}_64.S copies used in 'perf bench mem memcpy'

Peter Zijlstra <peterz@infradead.org>
    x86: Add straight-line-speculation mitigation

Masahiro Yamada <masahiroy@kernel.org>
    kbuild: move objtool_args back to scripts/Makefile.build

Peter Zijlstra <peterz@infradead.org>
    x86/alternative: Relax text_poke_bp() constraint

Peter Zijlstra <peterz@infradead.org>
    objtool: Add straight-line-speculation validation

Peter Zijlstra <peterz@infradead.org>
    x86: Prepare inline-asm for straight-line-speculation

Peter Zijlstra <peterz@infradead.org>
    x86: Prepare asm files for straight-line-speculation

Peter Zijlstra <peterz@infradead.org>
    x86/lib/atomic64_386_32: Rename things


-------------

Diffstat:

 Makefile                                      |  4 +-
 arch/x86/Kconfig                              | 12 ++++
 arch/x86/Makefile                             |  4 ++
 arch/x86/boot/compressed/efi_thunk_64.S       |  2 +-
 arch/x86/boot/compressed/head_64.S            |  8 +--
 arch/x86/boot/compressed/mem_encrypt.S        |  6 +-
 arch/x86/crypto/aegis128-aesni-asm.S          | 48 +++++++--------
 arch/x86/crypto/aes_ctrby8_avx-x86_64.S       |  2 +-
 arch/x86/crypto/aesni-intel_asm.S             | 56 ++++++++---------
 arch/x86/crypto/aesni-intel_avx-x86_64.S      | 40 ++++++-------
 arch/x86/crypto/blake2s-core.S                |  4 +-
 arch/x86/crypto/blowfish-x86_64-asm_64.S      | 12 ++--
 arch/x86/crypto/camellia-aesni-avx-asm_64.S   | 14 ++---
 arch/x86/crypto/camellia-aesni-avx2-asm_64.S  | 14 ++---
 arch/x86/crypto/camellia-x86_64-asm_64.S      | 12 ++--
 arch/x86/crypto/cast5-avx-x86_64-asm_64.S     | 12 ++--
 arch/x86/crypto/cast6-avx-x86_64-asm_64.S     | 10 ++--
 arch/x86/crypto/chacha-avx2-x86_64.S          |  6 +-
 arch/x86/crypto/chacha-avx512vl-x86_64.S      |  6 +-
 arch/x86/crypto/chacha-ssse3-x86_64.S         |  8 +--
 arch/x86/crypto/crc32-pclmul_asm.S            |  2 +-
 arch/x86/crypto/crc32c-pcl-intel-asm_64.S     |  2 +-
 arch/x86/crypto/crct10dif-pcl-asm_64.S        |  2 +-
 arch/x86/crypto/des3_ede-asm_64.S             |  4 +-
 arch/x86/crypto/ghash-clmulni-intel_asm.S     |  6 +-
 arch/x86/crypto/nh-avx2-x86_64.S              |  2 +-
 arch/x86/crypto/nh-sse2-x86_64.S              |  2 +-
 arch/x86/crypto/poly1305-x86_64-cryptogams.pl | 38 ++++++------
 arch/x86/crypto/serpent-avx-x86_64-asm_64.S   | 10 ++--
 arch/x86/crypto/serpent-avx2-asm_64.S         | 10 ++--
 arch/x86/crypto/serpent-sse2-i586-asm_32.S    |  6 +-
 arch/x86/crypto/serpent-sse2-x86_64-asm_64.S  |  6 +-
 arch/x86/crypto/sha1_avx2_x86_64_asm.S        |  2 +-
 arch/x86/crypto/sha1_ni_asm.S                 |  2 +-
 arch/x86/crypto/sha1_ssse3_asm.S              |  2 +-
 arch/x86/crypto/sha256-avx-asm.S              |  2 +-
 arch/x86/crypto/sha256-avx2-asm.S             |  2 +-
 arch/x86/crypto/sha256-ssse3-asm.S            |  2 +-
 arch/x86/crypto/sha256_ni_asm.S               |  2 +-
 arch/x86/crypto/sha512-avx-asm.S              |  2 +-
 arch/x86/crypto/sha512-avx2-asm.S             |  2 +-
 arch/x86/crypto/sha512-ssse3-asm.S            |  2 +-
 arch/x86/crypto/sm4-aesni-avx-asm_64.S        | 12 ++--
 arch/x86/crypto/sm4-aesni-avx2-asm_64.S       |  8 +--
 arch/x86/crypto/twofish-avx-x86_64-asm_64.S   | 10 ++--
 arch/x86/crypto/twofish-i586-asm_32.S         |  4 +-
 arch/x86/crypto/twofish-x86_64-asm_64-3way.S  |  6 +-
 arch/x86/crypto/twofish-x86_64-asm_64.S       |  4 +-
 arch/x86/entry/entry_32.S                     |  2 +-
 arch/x86/entry/entry_64.S                     | 10 ++--
 arch/x86/entry/thunk_32.S                     |  2 +-
 arch/x86/entry/thunk_64.S                     |  2 +-
 arch/x86/entry/vdso/vdso32/system_call.S      |  2 +-
 arch/x86/entry/vdso/vsgx.S                    |  2 +-
 arch/x86/entry/vsyscall/vsyscall_emu_64.S     |  6 +-
 arch/x86/include/asm/linkage.h                | 14 +++++
 arch/x86/include/asm/paravirt.h               |  2 +-
 arch/x86/include/asm/qspinlock_paravirt.h     |  4 +-
 arch/x86/include/asm/static_call.h            |  2 +-
 arch/x86/kernel/acpi/wakeup_32.S              |  6 +-
 arch/x86/kernel/alternative.c                 | 51 +++++++++++-----
 arch/x86/kernel/ftrace.c                      |  2 +-
 arch/x86/kernel/ftrace_32.S                   |  6 +-
 arch/x86/kernel/ftrace_64.S                   | 10 ++--
 arch/x86/kernel/head_32.S                     |  2 +-
 arch/x86/kernel/irqflags.S                    |  2 +-
 arch/x86/kernel/kprobes/core.c                |  2 +-
 arch/x86/kernel/paravirt.c                    |  2 +-
 arch/x86/kernel/relocate_kernel_32.S          | 10 ++--
 arch/x86/kernel/relocate_kernel_64.S          | 10 ++--
 arch/x86/kernel/sev_verify_cbit.S             |  2 +-
 arch/x86/kernel/static_call.c                 |  5 +-
 arch/x86/kernel/verify_cpu.S                  |  4 +-
 arch/x86/kvm/emulate.c                        | 23 +++++--
 arch/x86/kvm/svm/vmenter.S                    |  4 +-
 arch/x86/kvm/vmx/vmenter.S                    | 14 ++---
 arch/x86/lib/atomic64_386_32.S                | 86 +++++++++++++++------------
 arch/x86/lib/atomic64_cx8_32.S                | 16 ++---
 arch/x86/lib/checksum_32.S                    |  8 +--
 arch/x86/lib/clear_page_64.S                  |  6 +-
 arch/x86/lib/cmpxchg16b_emu.S                 |  4 +-
 arch/x86/lib/cmpxchg8b_emu.S                  |  4 +-
 arch/x86/lib/copy_mc_64.S                     |  6 +-
 arch/x86/lib/copy_page_64.S                   |  4 +-
 arch/x86/lib/copy_user_64.S                   | 12 ++--
 arch/x86/lib/csum-copy_64.S                   |  2 +-
 arch/x86/lib/error-inject.c                   |  3 +-
 arch/x86/lib/getuser.S                        | 22 +++----
 arch/x86/lib/hweight.S                        |  6 +-
 arch/x86/lib/iomap_copy_64.S                  |  2 +-
 arch/x86/lib/memcpy_64.S                      | 12 ++--
 arch/x86/lib/memmove_64.S                     |  4 +-
 arch/x86/lib/memset_64.S                      |  6 +-
 arch/x86/lib/msr-reg.S                        |  4 +-
 arch/x86/lib/putuser.S                        |  6 +-
 arch/x86/lib/retpoline.S                      |  4 +-
 arch/x86/math-emu/div_Xsig.S                  |  2 +-
 arch/x86/math-emu/div_small.S                 |  2 +-
 arch/x86/math-emu/mul_Xsig.S                  |  6 +-
 arch/x86/math-emu/polynom_Xsig.S              |  2 +-
 arch/x86/math-emu/reg_norm.S                  |  6 +-
 arch/x86/math-emu/reg_round.S                 |  2 +-
 arch/x86/math-emu/reg_u_add.S                 |  2 +-
 arch/x86/math-emu/reg_u_div.S                 |  2 +-
 arch/x86/math-emu/reg_u_mul.S                 |  2 +-
 arch/x86/math-emu/reg_u_sub.S                 |  2 +-
 arch/x86/math-emu/round_Xsig.S                |  4 +-
 arch/x86/math-emu/shr_Xsig.S                  |  8 +--
 arch/x86/math-emu/wm_shrx.S                   | 16 ++---
 arch/x86/mm/mem_encrypt_boot.S                |  4 +-
 arch/x86/platform/efi/efi_stub_32.S           |  2 +-
 arch/x86/platform/efi/efi_stub_64.S           |  2 +-
 arch/x86/platform/efi/efi_thunk_64.S          |  2 +-
 arch/x86/platform/olpc/xo1-wakeup.S           |  6 +-
 arch/x86/power/hibernate_asm_32.S             |  4 +-
 arch/x86/power/hibernate_asm_64.S             |  4 +-
 arch/x86/um/checksum_32.S                     |  4 +-
 arch/x86/um/setjmp_32.S                       |  2 +-
 arch/x86/um/setjmp_64.S                       |  2 +-
 arch/x86/xen/xen-asm.S                        | 12 ++--
 arch/x86/xen/xen-head.S                       |  2 +-
 fs/udf/namei.c                                |  8 +--
 include/net/bluetooth/hci_core.h              |  3 +
 include/uapi/linux/rfkill.h                   |  2 +-
 mm/gup.c                                      |  2 +-
 mm/memory-failure.c                           |  4 +-
 mm/memory.c                                   |  2 +
 mm/migrate.c                                  |  7 ++-
 mm/mlock.c                                    |  1 +
 mm/shmem.c                                    |  4 +-
 mm/userfaultfd.c                              |  3 +
 net/bluetooth/hci_core.c                      |  6 +-
 samples/ftrace/ftrace-direct-modify.c         |  4 +-
 samples/ftrace/ftrace-direct-too.c            |  2 +-
 samples/ftrace/ftrace-direct.c                |  2 +-
 scripts/Makefile.build                        | 11 ++++
 scripts/Makefile.lib                          | 11 ----
 scripts/link-vmlinux.sh                       |  3 +
 tools/arch/x86/lib/memcpy_64.S                | 12 ++--
 tools/arch/x86/lib/memset_64.S                |  6 +-
 tools/objtool/arch/x86/decode.c               | 13 ++--
 tools/objtool/builtin-check.c                 |  3 +-
 tools/objtool/check.c                         | 24 ++++++++
 tools/objtool/include/objtool/arch.h          |  1 +
 tools/objtool/include/objtool/builtin.h       |  2 +-
 145 files changed, 608 insertions(+), 484 deletions(-)

On Fri, May 13, 2022 at 04:23:42PM +0200, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.15.40 release.
> There are 21 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Sun, 15 May 2022 14:22:19 +0000.
> Anything received after that time might be too late.
> 

Build results:
	total: 156 pass: 156 fail: 0
Qemu test results:
	total: 488 pass: 488 fail: 0

Tested-by: Guenter Roeck <linux@roeck-us.net>

Guenter

Hi Greg,

On Fri, May 13, 2022 at 04:23:42PM +0200, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.15.40 release.
> There are 21 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Sun, 15 May 2022 14:22:19 +0000.
> Anything received after that time might be too late.

Build test:
mips (gcc version 11.2.1 20220408): 62 configs -> no failure
arm (gcc version 11.2.1 20220408): 100 configs -> no new failure
arm64 (gcc version 11.2.1 20220408): 3 configs -> no failure
x86_64 (gcc version 11.2.1 20220408): 4 configs -> no failure

Boot test:
x86_64: Booted on my test laptop. No regression.
x86_64: Booted on qemu. No regression. [1]
arm64: Booted on rpi4b (4GB model). No regression. [2]
mips: Booted on ci20 board. No regression. [3]

[1]. https://openqa.qa.codethink.co.uk/tests/1141
[2]. https://openqa.qa.codethink.co.uk/tests/1145
[3]. https://openqa.qa.codethink.co.uk/tests/1142

Tested-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>

--
Regards
Sudip

On Fri, 13 May 2022 at 19:58, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> This is the start of the stable review cycle for the 5.15.40 release.
> There are 21 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Sun, 15 May 2022 14:22:19 +0000.
> Anything received after that time might be too late.
>
> The whole patch series can be found in one patch at:
>         https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.15.40-rc1.gz
> or in the git tree and branch at:
>         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h

Results from Linaro’s test farm.
No regressions on arm64, arm, x86_64, and i386.

Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>

## Build
* kernel: 5.15.40-rc1
* git: https://gitlab.com/Linaro/lkft/mirrors/stable/linux-stable-rc
* git branch: linux-5.15.y
* git commit: 13b089c28632ad5a051bdbb1951ee189f96b01fd
* git describe: v5.15.39-22-g13b089c28632
* test details:
https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-5.15.y/build/v5.15.39-22-g13b089c28632

## Test Regressions (compared to v5.15.38-136-g60041d098524)
No test regressions found.

## Metric Regressions (compared to v5.15.38-136-g60041d098524)
No metric regressions found.

## Test Fixes (compared to v5.15.38-136-g60041d098524)
No test fixes found.

## Metric Fixes (compared to v5.15.38-136-g60041d098524)
No metric fixes found.

## Test result summary
total: 110223, pass: 92720, fail: 1126, skip: 15100, xfail: 1277

## Build Summary
* arc: 10 total, 10 passed, 0 failed
* arm: 296 total, 293 passed, 3 failed
* arm64: 47 total, 47 passed, 0 failed
* dragonboard-410c: 1 total, 1 passed, 0 failed
* hi6220-hikey: 1 total, 1 passed, 0 failed
* i386: 45 total, 41 passed, 4 failed
* juno-r2: 1 total, 1 passed, 0 failed
* mips: 41 total, 38 passed, 3 failed
* parisc: 14 total, 14 passed, 0 failed
* powerpc: 59 total, 56 passed, 3 failed
* riscv: 27 total, 27 passed, 0 failed
* s390: 26 total, 23 passed, 3 failed
* sh: 26 total, 24 passed, 2 failed
* sparc: 14 total, 14 passed, 0 failed
* x15: 1 total, 1 passed, 0 failed
* x86: 1 total, 1 passed, 0 failed
* x86_64: 47 total, 47 passed, 0 failed

## Test suites summary
* fwts
* igt-gpu-tools
* kselftest-
* kselftest-android
* kselftest-arm64
* kselftest-bpf
* kselftest-breakpoints
* kselftest-capabilities
* kselftest-cgroup
* kselftest-clone3
* kselftest-core
* kselftest-cpu-hotplug
* kselftest-cpufreq
* kselftest-drivers
* kselftest-efivarfs
* kselftest-filesystems
* kselftest-firmware
* kselftest-fpu
* kselftest-futex
* kselftest-gpio
* kselftest-intel_pstate
* kselftest-ipc
* kselftest-ir
* kselftest-kcmp
* kselftest-kexec
* kselftest-kvm
* kselftest-lib
* kselftest-livepatch
* kselftest-membarrier
* kselftest-memfd
* kselftest-memory-hotplug
* kselftest-mincore
* kselftest-mount
* kselftest-mqueue
* kselftest-net
* kselftest-netfilter
* kselftest-nsfs
* kselftest-openat2
* kselftest-pid_namespace
* kselftest-pidfd
* kselftest-proc
* kselftest-pstore
* kselftest-ptrace
* kselftest-rseq
* kselftest-rtc
* kselftest-seccomp
* kselftest-sigaltstack
* kselftest-size
* kselftest-splice
* kselftest-static_keys
* kselftest-sync
* kselftest-sysctl
* kselftest-tc-testing
* kselftest-timens
* kselftest-timers
* kselftest-tmpfs
* kselftest-tpm2
* kselftest-user
* kselftest-vm
* kselftest-x86
* kselftest-zram
* kunit
* kvm-unit-tests
* libgpiod
* libhugetlbfs
* linux-log-parser
* ltp-cap_bounds-tests
* ltp-commands-tests
* ltp-containers-tests
* ltp-controllers-tests
* ltp-cpuhotplug-tests
* ltp-crypto-tests
* ltp-cve-tests
* ltp-dio-tests
* ltp-fcntl-locktests-tests
* ltp-filecaps-tests
* ltp-fs-tests
* ltp-fs_bind-tests
* ltp-fs_perms_simple-tests
* ltp-fsx-tests
* ltp-hugetlb-tests
* ltp-io-tests
* ltp-ipc-tests
* ltp-math-tests
* ltp-mm-tests
* ltp-nptl-tests
* ltp-open-posix-tests
* ltp-pty-tests
* ltp-sched-tests
* ltp-securebits-tests
* ltp-syscalls-tests
* ltp-tracing-tests
* network-basic-tests
* packetdrill
* perf
* rcutorture
* ssuite
* v4l2-compliance
* vdso

--
Linaro LKFT
https://lkft.linaro.org

On 5/13/22 7:23 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.15.40 release.
> There are 21 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
>
> Responses should be made by Sun, 15 May 2022 14:22:19 +0000.
> Anything received after that time might be too late.
>
> The whole patch series can be found in one patch at:
> 	https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.15.40-rc1.gz
> or in the git tree and branch at:
> 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y
> and the diffstat can be found below.
>
> thanks,
>
> greg k-h

Built and booted successfully on RISC-V RV64 (HiFive Unmatched).

Tested-by: Ron Economos <re@w6rz.net>

On Fri, 13 May 2022 16:23:42 +0200, Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote:
> This is the start of the stable review cycle for the 5.15.40 release.
> There are 21 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Sun, 15 May 2022 14:22:19 +0000.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.15.40-rc1.gz
> or in the git tree and branch at:
> 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h
> 

5.15.40-rc1 Successfully Compiled and booted on my Raspberry PI 4b (8g) (bcm2711)
                
Tested-by: Fox Chen <foxhlchen@gmail.com>

On 5/13/22 07:23, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.15.40 release.
> There are 21 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Sun, 15 May 2022 14:22:19 +0000.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.15.40-rc1.gz
> or in the git tree and branch at:
> 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h

On ARCH_BRCMSTB using 32-bit and 64-bit ARM kernels:

Tested-by: Florian Fainelli <f.fainelli@gmail.com>
-- 
Florian

On 5/13/22 8:23 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.15.40 release.
> There are 21 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Sun, 15 May 2022 14:22:19 +0000.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.15.40-rc1.gz
> or in the git tree and branch at:
> 	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h
> 

Compiled and booted on my test system. No dmesg regressions.

Tested-by: Shuah Khan <skhan@linuxfoundation.org>

thanks,
-- Shuah