2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2016 Red Hat Inc. All Rights Reserved.
7 # Memleak in overlayfs copy-up error handling path leads to panic
8 # when unmount the underlying fs.
9 # Kernel commit ab79efab0 fixed this issue.
12 _begin_fstest auto copyup quick
14 # Override the default cleanup function.
19 _destroy_loop_device $fs_loop_dev
20 _destroy_loop_device $upper_loop_dev
25 # Import common functions.
28 # real QA test starts here
30 # Modify as appropriate.
32 # Use non-default scratch underlying overlay dirs, we need to check
33 # them explicity after test.
34 _require_scratch_nocheck
37 # Remove all files from previous tests
40 # setup loop images fs for overlayfs
41 lower_img=${OVL_BASE_SCRATCH_MNT}/${seq}.$$.img
42 $XFS_IO_PROG -f -c "truncate 120m" $lower_img >>$seqres.full 2>&1
43 fs_loop_dev=`_create_loop_device $lower_img`
44 $MKFS_XFS_PROG -f -n ftype=1 $fs_loop_dev >>$seqres.full 2>&1
46 # only 20m for upper dir
47 upper_img=${OVL_BASE_SCRATCH_MNT}/$$.${seq}.img
48 $XFS_IO_PROG -f -c "truncate 20m" $upper_img >>$seqres.full 2>&1
49 upper_loop_dev=`_create_loop_device $upper_img`
50 $MKFS_XFS_PROG -f -n ftype=1 $upper_loop_dev >>$seqres.full 2>&1
52 # mount underlying xfs
53 mkdir -p ${OVL_BASE_SCRATCH_MNT}/lowermnt
54 mkdir -p ${OVL_BASE_SCRATCH_MNT}/uppermnt
55 $MOUNT_PROG $fs_loop_dev ${OVL_BASE_SCRATCH_MNT}/lowermnt
56 $MOUNT_PROG $upper_loop_dev ${OVL_BASE_SCRATCH_MNT}/uppermnt
59 mkdir -p ${OVL_BASE_SCRATCH_MNT}/lowermnt/lower
60 mkdir -p ${OVL_BASE_SCRATCH_MNT}/uppermnt/upper
61 mkdir -p ${OVL_BASE_SCRATCH_MNT}/uppermnt/work
63 lowerd=${OVL_BASE_SCRATCH_MNT}/lowermnt/lower
64 upperd=${OVL_BASE_SCRATCH_MNT}/uppermnt/upper
65 workd=${OVL_BASE_SCRATCH_MNT}/uppermnt/work
67 # Create test file in lower dir, with too big a size for
68 # upper dir to copy up.
69 $XFS_IO_PROG -f -c "truncate 48m" ${lowerd}/test_file \
73 _overlay_scratch_mount_dirs $lowerd $upperd $workd
75 # the open call triggers copy-up and it will fail ENOSPC
76 $XFS_IO_PROG -f -c "o" ${SCRATCH_MNT}/test_file \
80 $UMOUNT_PROG $SCRATCH_MNT
83 _overlay_check_scratch_dirs $lowerd $upperd $workd
85 # unmount undelying xfs, this tiggers panic if memleak happens
86 $UMOUNT_PROG ${OVL_BASE_SCRATCH_MNT}/uppermnt
87 $UMOUNT_PROG ${OVL_BASE_SCRATCH_MNT}/lowermnt
90 echo "Silence is golden"