linux-kernel - LTP: syscalls: regression on mainline

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Date:   Thu, 4 Jun 2020 22:47:36 +0530
From:   Naresh Kamboju <naresh.kamboju@...aro.org>
To:     LTP List <ltp@...ts.linux.it>,
        open list <linux-kernel@...r.kernel.org>,
        inux-block@...r.kernel.org
Cc:     chrubis <chrubis@...e.cz>, Arnd Bergmann <arnd@...db.de>,
        maco@...roid.com, Christoph Hellwig <hch@....de>,
        Jens Axboe <axboe@...nel.dk>,
        Jan Stancek <jstancek@...hat.com>,
        Yang Xu <xuyang2018.jy@...fujitsu.com>,
        Xiao Yang <yangx.jy@...fujitsu.com>,
        Richard Palethorpe <rpalethorpe@...e.com>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        lkft-triage@...ts.linaro.org
Subject: LTP: syscalls: regression on mainline - ioctl_loop01 mknod07 setns01

Following three test cases reported as regression on Linux mainline kernel
on x86_64, arm64, arm and i386

  ltp-syscalls-tests:
    * ioctl_loop01
    * mknod07
    * setns01

git repo: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git branch: master
GOOD:
  git commit: b23c4771ff62de8ca9b5e4a2d64491b2fb6f8f69
  git describe: v5.7-1230-gb23c4771ff62
BAD:
  git commit: 1ee08de1e234d95b5b4f866878b72fceb5372904
  git describe: v5.7-3523-g1ee08de1e234

kernel-config: https://builds.tuxbuild.com/U3bU0dMA62OVHb4DvZIVuw/kernel.config

We are investigating these failures.

tst_test.c:906: CONF: btrfs driver not available
tst_test.c:1246: INFO: Timeout per run is 0h 15m 00s
tst_device.c:88: INFO: Found free device 1 '/dev/loop1'
ioctl_loop01.c:49: PASS: /sys/block/loop1/loop/partscan = 0
[ 1073.639677] loop_set_status: loop1 () has still dirty pages (nrpages=1)
ioctl_loop01.c:50: PASS: /sys/block/loop1/loop/autoclear = 0
ioctl_loop01.c:51: PASS: /sys/block/loop1/loop/backing_file =
'/scratch/ltp-mnIdulzriQ/9cPtLQ/test.img'
ioctl_loop01.c:63: FAIL: expect 12 but got 17
ioctl_loop01.c:67: FAIL: /sys/block/loop1/loop/partscan != 1 got 0
ioctl_loop01.c:68: FAIL: /sys/block/loop1/loop/autoclear != 1 got 0
ioctl_loop01.c:79: FAIL: access /dev/loop1p1 fails
[ 1073.679678] loop_set_status: loop1 () has still dirty pages (nrpages=1)
ioctl_loop01.c:85: FAIL: access /sys/block/loop1/loop1p1 fails

HINT: You _MAY_ be missing kernel fixes, see:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=10c70d95c0f2

mke2fs 1.43.8 (1-Jan-2018)
[ 1264.711379] EXT4-fs (loop0): mounting ext2 file system using the
ext4 subsystem
[ 1264.716642] EXT4-fs (loop0): mounted filesystem without journal. Opts: (null)
mknod07     0  TINFO  :  Using test device LTP_DEV='/dev/loop0'
mknod07     0  TINFO  :  Formatting /dev/loop0 with ext2 opts='' extra opts=''
mknod07     1  TPASS  :  mknod failed as expected:
TEST_ERRNO=EACCES(13): Permission denied
mknod07     2  TPASS  :  mknod failed as expected:
TEST_ERRNO=EACCES(13): Permission denied
mknod07     3  TFAIL  :  mknod07.c:155: mknod succeeded unexpectedly
mknod07     4  TPASS  :  mknod failed as expected:
TEST_ERRNO=EPERM(1): Operation not permitted
mknod07     5  TPASS  :  mknod failed as expected:
TEST_ERRNO=EROFS(30): Read-only file system
mknod07     6  TPASS  :  mknod failed as expected:
TEST_ERRNO=ELOOP(40): Too many levels of symbolic links


setns01     0  TINFO  :  ns_name=ipc, ns_fds[0]=6, ns_types[0]=0x8000000
setns01     0  TINFO  :  ns_name=mnt, ns_fds[1]=7, ns_types[1]=0x20000
setns01     0  TINFO  :  ns_name=net, ns_fds[2]=8, ns_types[2]=0x40000000
setns01     0  TINFO  :  ns_name=pid, ns_fds[3]=9, ns_types[3]=0x20000000
setns01     0  TINFO  :  ns_name=uts, ns_fds[4]=10, ns_types[4]=0x4000000
setns01     0  TINFO  :  setns(-1, 0x8000000)
setns01     1  TPASS  :  invalid fd exp_errno=9
setns01     0  TINFO  :  setns(-1, 0x20000)
setns01     2  TPASS  :  invalid fd exp_errno=9
setns01     0  TINFO  :  setns(-1, 0x40000000)
setns01     3  TPASS  :  invalid fd exp_errno=9
setns01     0  TINFO  :  setns(-1, 0x20000000)
setns01     4  TPASS  :  invalid fd exp_errno=9
setns01     0  TINFO  :  setns(-1, 0x4000000)
setns01     5  TPASS  :  invalid fd exp_errno=9
setns01     0  TINFO  :  setns(11, 0x8000000)
setns01     6  TFAIL  :  setns01.c:176: regular file fd exp_errno=22:
errno=EBADF(9): Bad file descriptor
setns01     0  TINFO  :  setns(11, 0x20000)
setns01     7  TFAIL  :  setns01.c:176: regular file fd exp_errno=22:
errno=EBADF(9): Bad file descriptor
setns01     0  TINFO  :  setns(11, 0x40000000)
setns01     8  TFAIL  :  setns01.c:176: regular file fd exp_errno=22:
errno=EBADF(9): Bad file descriptor
setns01     0  TINFO  :  setns(11, 0x20000000)
setns01     9  TFAIL  :  setns01.c:176: regular file fd exp_errno=22:
errno=EBADF(9): Bad file descriptor
setns01     0  TINFO  :  setns(11, 0x4000000)
setns01    10  TFAIL  :  setns01.c:176: regular file fd exp_errno=22:
errno=EBADF(9): Bad file descriptor

Full test log link,
https://lkft.validation.linaro.org/scheduler/job/1467931#L8047

test results comparison shows this test case started failing from June-2-2020
https://qa-reports.linaro.org/lkft/linux-mainline-oe/build/v5.7-4092-g38696e33e2bd/testrun/2779586/suite/ltp-syscalls-tests/test/ioctl_loop01/history/

https://qa-reports.linaro.org/lkft/linux-mainline-oe/build/v5.7-4092-g38696e33e2bd/testrun/2779586/suite/ltp-syscalls-tests/test/setns01/history/

https://qa-reports.linaro.org/lkft/linux-mainline-oe/build/v5.7-4092-g38696e33e2bd/testrun/2779586/suite/ltp-syscalls-tests/test/mknod07/history/


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https://lkft.linaro.org