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    SubjectRe: next-20230124: LTP: shmctl01.c:120: TFAIL: after child shmdt() shm_nattcg=20 expected 0
    On Wed, Jan 25, 2023, at 16:11, Naresh Kamboju wrote:
    > LTP syscalls shmctl01 test failed on Linux next-20230124 tag across all the
    > available architectures with following error logs,
    >
    > tst_test.c:1524: TINFO: Timeout per run is 0h 05m 00s
    > shmctl01.c:256: TINFO: shm_id=9 maps to kernel index=9
    > shmctl01.c:220: TINFO: Basic checks
    > shmctl01.c:175: TPASS: IPC_STAT: shm_segsz=2048
    > shmctl01.c:182: TPASS: IPC_STAT: shm_cpid=103946
    > shmctl01.c:189: TPASS: IPC_STAT: shm_ctime=1674621556 in range
    > <1674621556,1674621556>
    > shmctl01.c:175: TPASS: SHM_STAT: shm_segsz=2048
    > shmctl01.c:182: TPASS: SHM_STAT: shm_cpid=103946
    > shmctl01.c:189: TPASS: SHM_STAT: shm_ctime=1674621556 in range
    > <1674621556,1674621556>
    > shmctl01.c:220: TINFO: Children attach SHM
    > shmctl01.c:116: TPASS: before child shmat() shm_nattch=0
    > shmctl01.c:116: TPASS: after child shmat() shm_nattch=20
    > shmctl01.c:120: TFAIL: after child shmdt() shm_nattcg=20 expected 0
    > shmctl01.c:220: TINFO: Chidlren inherit SHM
    > shmctl01.c:116: TPASS: inherited after fork() shm_nattch=21
    > shmctl01.c:120: TFAIL: after child shmdt() shm_nattcg=21 expected 1
    > shmctl01.c:120: TFAIL: after parent shmdt() shm_nattcg=21 expected 0
    >
    > Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
    >

    $ git log ..next-20230125 --stat --stat ipc/

    commit 823fb3d78226e9b89c6a707654bd3284b06aef61
    Author: Liam R. Howlett <Liam.Howlett@Oracle.com>
    Date: Fri Jan 20 11:26:16 2023 -0500

    ipc/shm: use the vma iterator for munmap calls

    Pass through the vma iterator to do_vmi_munmap() to handle the iterator
    state internally

    Link: https://lkml.kernel.org/r/20230120162650.984577-16-Liam.Howlett@oracle.com
    Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

    ipc/shm.c | 11 +++++------
    1 file changed, 5 insertions(+), 6 deletions(-)

    Sven Schnelle also reported this earlier today:

    https://lore.kernel.org/all/20230125134558.mm3dopfa7cxqux5h@revolver/

    Arnd

    > Test logs:
    > https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230124/testrun/14344836/suite/ltp-syscalls/test/shmat01/details/
    > https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230125/testrun/14356742/suite/ltp-syscalls/test/shmat01/log
    >
    > Test history:
    > https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20230125/testrun/14356742/suite/ltp-syscalls/test/shmat01/history/
    >
    > metadata:
    > git_ref: master
    > git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next
    > git_sha: a54df7622717a40ddec95fd98086aff8ba7839a6
    > git_describe: next-20230124
    > kernel_version: 6.2.0-rc5
    > kernel-config:
    > https://storage.tuxsuite.com/public/linaro/lkft/builds/2Kl19cvIBraXOcZpBGCPzCajGAs/config
    > build-url:
    > https://gitlab.com/Linaro/lkft/mirrors/next/linux-next/-/pipelines/755587911
    > artifact-location:
    > https://storage.tuxsuite.com/public/linaro/lkft/builds/2Kl19cvIBraXOcZpBGCPzCajGAs/
    > toolchain: gcc-11
    >
    > --
    > Linaro LKFT
    > https://lkft.linaro.org

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