Greeting,

FYI, we noticed the following commit (built with gcc-9):

commit: 322c4293ecc58110227b49d7e47ae37b9b03566f ("loop: make autoclear operation asynchronous")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master

in testcase: xfstests
version: xfstests-x86_64-972d710-1_20211216
with following parameters:

	disk: 4HDD
	fs: xfs
	test: xfs-group-04
	ucode: 0x21

test-description: xfstests is a regression test suite for xfs and other files ystems.
test-url: git://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git


on test machine: 4 threads 1 sockets Intel(R) Core(TM) i3-3220 CPU @ 3.30GHz with 8G memory

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):




If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@intel.com>

2021-12-18 14:24:15 export TEST_DIR=/fs/sda2
2021-12-18 14:24:15 export TEST_DEV=/dev/sda2
2021-12-18 14:24:15 export FSTYP=xfs
2021-12-18 14:24:15 export SCRATCH_MNT=/fs/scratch
2021-12-18 14:24:15 mkdir /fs/scratch -p
2021-12-18 14:24:15 export SCRATCH_DEV=/dev/sda5
2021-12-18 14:24:15 export SCRATCH_LOGDEV=/dev/sda3
2021-12-18 14:24:15 export SCRATCH_XFS_LIST_METADATA_FIELDS=u3.sfdir3.hdr.parent.i4
2021-12-18 14:24:15 export SCRATCH_XFS_LIST_FUZZ_VERBS=random
2021-12-18 14:24:15 sed "s:^:xfs/:" //lkp/benchmarks/xfstests/tests/xfs-group-04
2021-12-18 14:24:15 ./check xfs/040 xfs/041 xfs/042 xfs/043 xfs/045 xfs/046 xfs/047 xfs/048 xfs/049
FSTYP         -- xfs (debug)
PLATFORM      -- Linux/x86_64 lkp-ivb-d04 5.16.0-rc3-00080-g322c4293ecc5 #1 SMP Sat Dec 18 11:24:43 CST 2021
MKFS_OPTIONS  -- -f /dev/sda5
MOUNT_OPTIONS -- /dev/sda5 /fs/scratch

xfs/040	[not run] Can't run libxfs-diff without KWORKAREA set
xfs/041	 32s
xfs/042	 45s
xfs/043	[not run] No dump tape specified
xfs/045	 6s
xfs/046	 15s
xfs/047	 26s
xfs/048	 1s
xfs/049	[failed, exit status 1]- output mismatch (see /lkp/benchmarks/xfstests/results//xfs/049.out.bad)
    --- tests/xfs/049.out	2021-12-16 21:14:11.000000000 +0000
    +++ /lkp/benchmarks/xfstests/results//xfs/049.out.bad	2021-12-18 14:27:49.146706650 +0000
    @@ -13,3 +13,5 @@
     --- clean
     --- umount ext2 on xfs
     --- umount xfs
    +!!! umount xfs failed
    +(see /lkp/benchmarks/xfstests/results//xfs/049.full for details)
    ...
    (Run 'diff -u /lkp/benchmarks/xfstests/tests/xfs/049.out /lkp/benchmarks/xfstests/results//xfs/049.out.bad'  to see the entire diff)
Ran: xfs/040 xfs/041 xfs/042 xfs/043 xfs/045 xfs/046 xfs/047 xfs/048 xfs/049
Not run: xfs/040 xfs/043
Failures: xfs/049
Failed 1 of 9 tests




To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        sudo bin/lkp install job.yaml           # job file is attached in this email
        bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
        sudo bin/lkp run generated-yaml-file

        # if come across any failure that blocks the test,
        # please remove ~/.lkp and /lkp dir to run from a clean state.



---
0DAY/LKP+ Test Infrastructure                   Open Source Technology Center
https://lists.01.org/hyperkitty/list/lkp@lists.01.org       Intel Corporation

Thanks,
Oliver Sang