Re: [PATCH] fs: allow rename across bind mounts on same superblock

kernel test robot <[email protected]>
Newsgroups dev.linux.lists.oe-lkp,dev.linux.lists.netfs,org.kernel.vger.ecryptfs,org.kernel.vger.linux-cifs,org.kernel.vger.linux-fsdevel,org.kernel.vger.linux-nfs,org.kernel.vger.linux-unionfs
Message-ID <[email protected]>

Hello,

kernel test robot noticed "xfstests.generic.633.fail" on:

commit: 6c7ce82ab1bf6ff8bf562d830a5e9a2dd26b4ebb ("[PATCH] fs: allow rename across bind mounts on same superblock")
url: https://github.com/intel-lab-lkp/linux/commits/Andrei-Topala/fs-allow-rename-across-bind-mounts-on-same-superblock/20251224-020432
base: https://git.kernel.org/cgit/linux/kernel/git/vfs/vfs.git vfs.all
patch link: https://lore.kernel.org/all/[email protected]/
patch subject: [PATCH] fs: allow rename across bind mounts on same superblock

in testcase: xfstests
version: xfstests-x86_64-a668057f-1_20251209
with following parameters:

	disk: 4HDD
	fs: ext2
	test: generic-633



config: x86_64-rhel-9.4-func
compiler: gcc-14
test machine: 4 threads Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz (Skylake) with 32G memory

(please refer to attached dmesg/kmsg for entire log/backtrace)



If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-lkp/[email protected]

2025-12-28 19:38:18 cd /lkp/benchmarks/xfstests
2025-12-28 19:38:18 export TEST_DIR=/fs/sdb1
2025-12-28 19:38:18 export TEST_DEV=/dev/sdb1
2025-12-28 19:38:18 export FSTYP=ext2
2025-12-28 19:38:18 export SCRATCH_MNT=/fs/scratch
2025-12-28 19:38:18 mkdir /fs/scratch -p
2025-12-28 19:38:18 export SCRATCH_DEV=/dev/sdb4
2025-12-28 19:38:18 echo generic/633
2025-12-28 19:38:18 ./check -E tests/exclude/ext2 generic/633
FSTYP         -- ext2
PLATFORM      -- Linux/x86_64 lkp-skl-d03 6.19.0-rc1-00037-g6c7ce82ab1bf #1 SMP PREEMPT_DYNAMIC Mon Dec 29 01:50:58 CST 2025
MKFS_OPTIONS  -- -F /dev/sdb4
MOUNT_OPTIONS -- -o acl,user_xattr /dev/sdb4 /fs/scratch

generic/633        [failed, exit status 1]- output mismatch (see /lkp/benchmarks/xfstests/results//generic/633.out.bad)
    --- tests/generic/633.out	2025-12-09 15:20:52.000000000 +0000
    +++ /lkp/benchmarks/xfstests/results//generic/633.out.bad	2025-12-28 19:41:48.101143921 +0000
    @@ -1,2 +1,4 @@
     QA output created by 633
     Silence is golden
    +vfstest.c: 199: rename_crossing_mounts - Success - failure: renameat
    +vfstest.c: 2418: run_test - Success - failure: cross mount rename
    ...
    (Run 'diff -u /lkp/benchmarks/xfstests/tests/generic/633.out /lkp/benchmarks/xfstests/results//generic/633.out.bad'  to see the entire diff)
Ran: generic/633
Failures: generic/633
Failed 1 of 1 tests




The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20251230/[email protected]



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