This is the start of the stable review cycle for the 5.15.52 release.
There are 28 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 Sat, 02 Jul 2022 13:32:22 +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-5.15.52-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 5.15.52-rc1

Pavel Begunkov <asml.silence@gmail.com>
    io_uring: fix not locked access to fixed buf table

Vladimir Oltean <vladimir.oltean@nxp.com>
    net: mscc: ocelot: allow unregistered IP multicast flooding to CPU

Ping-Ke Shih <pkshih@realtek.com>
    rtw88: rtw8821c: enable rfe 6 devices

Guo-Feng Fan <vincent_fann@realtek.com>
    rtw88: 8821c: support RFE type4 wifi NIC

Christian Brauner <brauner@kernel.org>
    fs: account for group membership

Christian Brauner <brauner@kernel.org>
    fs: fix acl translation

Christian Brauner <christian.brauner@ubuntu.com>
    fs: support mapped mounts of mapped filesystems

Christian Brauner <christian.brauner@ubuntu.com>
    fs: add i_user_ns() helper

Christian Brauner <christian.brauner@ubuntu.com>
    fs: port higher-level mapping helpers

Christian Brauner <christian.brauner@ubuntu.com>
    fs: remove unused low-level mapping helpers

Christian Brauner <christian.brauner@ubuntu.com>
    fs: use low-level mapping helpers

Christian Brauner <christian.brauner@ubuntu.com>
    docs: update mapping documentation

Christian Brauner <christian.brauner@ubuntu.com>
    fs: account for filesystem mappings

Christian Brauner <christian.brauner@ubuntu.com>
    fs: tweak fsuidgid_has_mapping()

Christian Brauner <christian.brauner@ubuntu.com>
    fs: move mapping helpers

Christian Brauner <christian.brauner@ubuntu.com>
    fs: add is_idmapped_mnt() helper

Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
    powerpc/ftrace: Remove ftrace init tramp once kernel init is complete

Darrick J. Wong <djwong@kernel.org>
    xfs: only bother with sync_filesystem during readonly remount

Darrick J. Wong <djwong@kernel.org>
    xfs: prevent UAF in xfs_log_item_in_current_chkpt

Dave Chinner <dchinner@redhat.com>
    xfs: check sb_meta_uuid for dabuf buffer recovery

Darrick J. Wong <djwong@kernel.org>
    xfs: remove all COW fork extents when remounting readonly

Yang Xu <xuyang2018.jy@fujitsu.com>
    xfs: Fix the free logic of state in xfs_attr_node_hasname

Brian Foster <bfoster@redhat.com>
    xfs: punch out data fork delalloc blocks on COW writeback failure

Rustam Kovhaev <rkovhaev@gmail.com>
    xfs: use kmem_cache_free() for kmem_cache objects

Coly Li <colyli@suse.de>
    bcache: memset on stack variables in bch_btree_check() and bch_sectors_dirty_init()

Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    x86, kvm: use proper ASM macros for kvm_vcpu_is_preempted

Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    clocksource/drivers/ixp4xx: remove __init from ixp4xx_timer_setup()

Masahiro Yamada <masahiroy@kernel.org>
    tick/nohz: unexport __init-annotated tick_nohz_full_setup()


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

Diffstat:

 Documentation/filesystems/idmappings.rst      |  72 --------
 Makefile                                      |   4 +-
 arch/powerpc/include/asm/ftrace.h             |   4 +-
 arch/powerpc/kernel/trace/ftrace.c            |  15 +-
 arch/powerpc/mm/mem.c                         |   2 +
 arch/x86/kernel/kvm.c                         |   2 +-
 drivers/clocksource/mmio.c                    |   2 +-
 drivers/clocksource/timer-ixp4xx.c            |  10 +-
 drivers/md/bcache/btree.c                     |   1 +
 drivers/md/bcache/writeback.c                 |   1 +
 drivers/net/ethernet/mscc/ocelot.c            |   8 +-
 drivers/net/wireless/realtek/rtw88/rtw8821c.c |  14 +-
 fs/attr.c                                     |  26 ++-
 fs/cachefiles/bind.c                          |   2 +-
 fs/ecryptfs/main.c                            |   2 +-
 fs/io_uring.c                                 |  28 +--
 fs/ksmbd/smbacl.c                             |  19 +--
 fs/ksmbd/smbacl.h                             |   5 +-
 fs/namespace.c                                |  53 ++++--
 fs/nfsd/export.c                              |   2 +-
 fs/open.c                                     |   8 +-
 fs/overlayfs/super.c                          |   2 +-
 fs/posix_acl.c                                |  27 ++-
 fs/proc_namespace.c                           |   2 +-
 fs/xattr.c                                    |   6 +-
 fs/xfs/libxfs/xfs_attr.c                      |  17 +-
 fs/xfs/xfs_aops.c                             |  15 +-
 fs/xfs/xfs_buf_item_recover.c                 |   2 +-
 fs/xfs/xfs_extfree_item.c                     |   6 +-
 fs/xfs/xfs_inode.c                            |   8 +-
 fs/xfs/xfs_linux.h                            |   1 +
 fs/xfs/xfs_log_cil.c                          |   6 +-
 fs/xfs/xfs_super.c                            |  21 ++-
 fs/xfs/xfs_symlink.c                          |   4 +-
 include/linux/fs.h                            | 141 +++++-----------
 include/linux/mnt_idmapping.h                 | 234 ++++++++++++++++++++++++++
 include/linux/platform_data/timer-ixp4xx.h    |   5 +-
 include/linux/posix_acl_xattr.h               |   4 +
 kernel/time/tick-sched.c                      |   1 -
 security/commoncap.c                          |  15 +-
 40 files changed, 498 insertions(+), 299 deletions(-)

On 6/30/22 7:46 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.15.52 release.
> There are 28 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 Sat, 02 Jul 2022 13:32:22 +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-5.15.52-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

Hi Greg,

On Thu, Jun 30, 2022 at 03:46:56PM +0200, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.15.52 release.
> There are 28 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 Sat, 02 Jul 2022 13:32:22 +0000.
> Anything received after that time might be too late.

Build test (gcc version 11.3.1 20220627):
mips: 62 configs -> no failure
arm: 99 configs -> no failure
arm64: 3 configs -> no failure
x86_64: 4 configs -> no failure
alpha allmodconfig -> no failure
csky allmodconfig -> no failure
powerpc allmodconfig -> no failure
riscv allmodconfig -> no failure
s390 allmodconfig -> no failure
xtensa allmodconfig -> 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/1434
[2]. https://openqa.qa.codethink.co.uk/tests/1437
[3]. https://openqa.qa.codethink.co.uk/tests/1439

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

--
Regards
Sudip

On 6/30/22 6:46 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.15.52 release.
> There are 28 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 Sat, 02 Jul 2022 13:32:22 +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-5.15.52-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 Thu, Jun 30, 2022 at 03:46:56PM +0200, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.15.52 release.
> There are 28 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 Sat, 02 Jul 2022 13:32:22 +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-5.15.52-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

Ran xfstests after the backport series I gave you:

sudo ./check -g idmapped (xfs, ext4, btrfs, ...)
sudo ./runltp -f fs_perms_simple,fs_bind,containers,cap_bounds,cve,uevent,filecaps

all tests pass.

Thank you!
Christian

On Fri, Jul 01, 2022 at 10:51:23AM +0200, Christian Brauner wrote:
> On Thu, Jun 30, 2022 at 03:46:56PM +0200, Greg Kroah-Hartman wrote:
> > This is the start of the stable review cycle for the 5.15.52 release.
> > There are 28 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 Sat, 02 Jul 2022 13:32:22 +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-5.15.52-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
> 
> Ran xfstests after the backport series I gave you:
> 
> sudo ./check -g idmapped (xfs, ext4, btrfs, ...)
> sudo ./runltp -f fs_perms_simple,fs_bind,containers,cap_bounds,cve,uevent,filecaps
> 
> all tests pass.

Nice!

Want to respond with a Tested-by so that the tools will pick it up for
the release commit?

thanks,

greg k-h

On Fri, Jul 01, 2022 at 10:57:48AM +0200, Greg Kroah-Hartman wrote:
> On Fri, Jul 01, 2022 at 10:51:23AM +0200, Christian Brauner wrote:
> > On Thu, Jun 30, 2022 at 03:46:56PM +0200, Greg Kroah-Hartman wrote:
> > > This is the start of the stable review cycle for the 5.15.52 release.
> > > There are 28 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 Sat, 02 Jul 2022 13:32:22 +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-5.15.52-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
> > 
> > Ran xfstests after the backport series I gave you:
> > 
> > sudo ./check -g idmapped (xfs, ext4, btrfs, ...)
> > sudo ./runltp -f fs_perms_simple,fs_bind,containers,cap_bounds,cve,uevent,filecaps
> > 
> > all tests pass.
> 
> Nice!
> 
> Want to respond with a Tested-by so that the tools will pick it up for
> the release commit?

Absolutely,
Tested-by: Christian Brauner (Microsoft) <brauner@kernel.org>

On Thu, 30 Jun 2022 at 19:25, Greg Kroah-Hartman
<gregkh@linuxfoundation.org> wrote:
>
> This is the start of the stable review cycle for the 5.15.52 release.
> There are 28 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 Sat, 02 Jul 2022 13:32:22 +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-5.15.52-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: 5.15.52-rc1
* git: https://gitlab.com/Linaro/lkft/mirrors/stable/linux-stable-rc
* git branch: linux-5.15.y
* git commit: 49249bfc4d1bc5a4f6c82471a12a13bcc78a40c4
* git describe: v5.15.51-29-g49249bfc4d1b
* test details:
https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-5.15.y/build/v5.15.51-29-g49249bfc4d1b

## Test Regressions (compared to v5.15.51)
No test regressions found.

## Metric Regressions (compared to v5.15.51)
No metric regressions found.

## Test Fixes (compared to v5.15.51)
No test fixes found.

## Metric Fixes (compared to v5.15.51)
No metric fixes found.

## Test result summary
total: 132820, pass: 118669, fail: 310, skip: 12977, xfail: 864

## Build Summary
* arc: 10 total, 10 passed, 0 failed
* arm: 308 total, 308 passed, 0 failed
* arm64: 62 total, 62 passed, 0 failed
* i386: 52 total, 49 passed, 3 failed
* mips: 48 total, 48 passed, 0 failed
* parisc: 12 total, 12 passed, 0 failed
* powerpc: 54 total, 54 passed, 0 failed
* riscv: 22 total, 22 passed, 0 failed
* s390: 20 total, 20 passed, 0 failed
* sh: 24 total, 24 passed, 0 failed
* sparc: 12 total, 12 passed, 0 failed
* x86_64: 56 total, 55 passed, 1 failed

## Test suites summary
* fwts
* igt-gpu-tools
* kunit
* kvm-unit-tests
* libgpiod
* libhugetlbfs
* log-parser-boot
* log-parser-test
* ltp-cap_bounds
* ltp-commands
* ltp-containers
* ltp-controllers
* ltp-cpuhotplug
* ltp-crypto
* ltp-cve
* ltp-dio
* ltp-fcntl-locktests
* ltp-filecaps
* ltp-fs
* ltp-fs_bind
* ltp-fs_perms_simple
* ltp-fsx
* ltp-hugetlb
* ltp-io
* ltp-ipc
* ltp-math
* ltp-mm
* ltp-nptl
* ltp-open-posix-tests
* ltp-pty
* ltp-sched
* ltp-securebits
* ltp-smoke
* ltp-syscalls
* ltp-tracing
* network-basic-tests
* packetdrill
* perf
* perf/Zstd-perf.data-compression
* rcutorture
* ssuite
* v4l2-compliance
* vdso

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

On Thu, Jun 30, 2022 at 03:46:56PM +0200, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.15.52 release.
> There are 28 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.
> 

Successfully cross-compiled for arm64 (bcm2711_defconfig, GCC 12.1.0)
and powerpc (ps3_defconfig, GCC 12.1.0).

I get two warnings on powerpc build (vdso related):

  VDSO32L arch/powerpc/kernel/vdso32/vdso32.so.dbg
<prefix>/lib/gcc/powerpc64-unknown-linux-gnu/12.1.0/../../../../powerpc64-unknown-linux-gnu/bin/ld: warning: cannot find entry symbol nable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang; not setting start address
  VDSO64L arch/powerpc/kernel/vdso64/vdso64.so.dbg
<prefix>/lib/gcc/powerpc64-unknown-linux-gnu/12.1.0/../../../../powerpc64-unknown-linux-gnu/bin/ld: warning: cannot find entry symbol nable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang; not setting start address

Tested-by: Bagas Sanjaya <bagasdotme@gmail.com>

-- 
An old man doll... just what I always wanted! - Clara

On Thu, Jun 30, 2022 at 03:46:56PM +0200, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.15.52 release.
> There are 28 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 Sat, 02 Jul 2022 13:32:22 +0000.
> Anything received after that time might be too late.
> 

Build results:
	total: 159 pass: 159 fail: 0
Qemu test results:
	total: 488 pass: 488 fail: 0

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

Guenter

On 6/30/2022 6:46 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.15.52 release.
> There are 28 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 Sat, 02 Jul 2022 13:32:22 +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-5.15.52-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