[BUG REPORT] generic/561 fails when testing xfs on next-20240506 kernel

Chandan Babu R
2024-05-08T09:29:41Z

Hi,

generic/561 fails when testing XFS on a next-20240506 kernel as shown below,

# ./check generic/561
FSTYP -- xfs (debug)
PLATFORM -- Linux/x86_64 xfs-crc-rtdev-extsize-28k 6.9.0-rc7-next-20240506+ #1 SMP PREEMPT_DYNAMIC Mon May 6 07:53:46 GMT 2024
MKFS_OPTIONS -- -f -rrtdev=/dev/loop14 -f -m reflink=0,rmapbt=0, -d rtinherit=1 -r extsize=28k /dev/loop5
MOUNT_OPTIONS -- -o context=system_u:object_r:root_t:s0 -ortdev=/dev/loop14 /dev/loop5 /media/scratch

generic/561 - output mismatch (see /var/lib/xfstests/results/xfs-crc-rtdev-extsize-28k/6.9.0-rc7-next-20240506+/xfs_crc_rtdev_extsize_28k/generic/561.out.bad)
--- tests/generic/561.out 2024-05-06 08:18:09.681430366 +0000
+++ /var/lib/xfstests/results/xfs-crc-rtdev-extsize-28k/6.9.0-rc7-next-20240506+/xfs_crc_rtdev_extsize_28k/generic/561.out.bad 2024-05-08 09:14:24.908010133 +0000
@@ -1,2 +1,5 @@
QA output created by 561
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: FAILED
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: FAILED
+md5sum: WARNING: 2 computed checksums did NOT match
Silence is golden
...
(Run 'diff -u /var/lib/xfstests/tests/generic/561.out /var/lib/xfstests/results/xfs-crc-rtdev-extsize-28k/6.9.0-rc7-next-20240506+/xfs_crc_rtdev_extsize_28k/generic/561.out.bad' to see the entire diff)
Ran: generic/561
Failures: generic/561
Failed 1 of 1 tests

The following was the fstest configuration used for the test run,

FSTYP=xfs
TEST_DIR=/media/test
SCRATCH_MNT=/media/scratch
TEST_DEV=/dev/loop16
TEST_LOGDEV=/dev/loop13
SCRATCH_DEV_POOL="/dev/loop5 /dev/loop6 /dev/loop7 /dev/loop8 /dev/loop9 /dev/loop10 /dev/loop11 /dev/loop12"
MKFS_OPTIONS='-f -m crc=1,reflink=0,rmapbt=0, -i sparse=0 -lsize=1g'
TEST_FS_MOUNT_OPTS="-o logdev=/dev/loop13"
MOUNT_OPTIONS='-o usrquota,grpquota,prjquota'
TEST_FS_MOUNT_OPTS="$TEST_FS_MOUNT_OPTS -o usrquota,grpquota,prjquota"
SCRATCH_LOGDEV=/dev/loop15
USE_EXTERNAL=yes
LOGWRITES_DEV=/dev/loop15

Git bisect produced the following as the first bad commit,

commit 943bc0882cebf482422640924062a7daac5a27ba
Author: Zhang Yi <yi.zhang@huawei.com>
Date: Wed Mar 20 19:05:45 2024 +0800

iomap: don't increase i_size if it's not a write operation

Increase i_size in iomap_zero_range() and iomap_unshare_iter() is not
needed, the caller should handle it. Especially, when truncate partial
block, we should not increase i_size beyond the new EOF here. It doesn't
affect xfs and gfs2 now because they set the new file size after zero
out, it doesn't matter that a transient increase in i_size, but it will
affect ext4 because it set file size before truncate. So move the i_size
updating logic to iomap_write_iter().

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://lore.kernel.org/r/20240320110548.2200662-7-yi.zhang@huaweicloud.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>

fs/iomap/buffered-io.c | 50 +++++++++++++++++++++++++-------------------------
1 file changed, 25 insertions(+), 25 deletions(-)

--
Chandan