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 seqres=$RESULT_DIR/$seq
13 echo "QA output created by $seq"
17 status=1 # failure is the default!
18 trap "_cleanup; exit \$status" 0 1 2 3 15
24 _destroy_loop_device $fs_loop_dev
25 _destroy_loop_device $upper_loop_dev
30 # get standard environment, filters and checks
34 # remove previous $seqres.full before test
37 # real QA test starts here
39 # Modify as appropriate.
42 # Use non-default scratch underlying overlay dirs, we need to check
43 # them explicity after test.
44 _require_scratch_nocheck
47 # Remove all files from previous tests
50 # setup loop images fs for overlayfs
51 lower_img=${OVL_BASE_SCRATCH_MNT}/${seq}.$$.img
52 $XFS_IO_PROG -f -c "truncate 120m" $lower_img >>$seqres.full 2>&1
53 fs_loop_dev=`_create_loop_device $lower_img`
54 $MKFS_XFS_PROG -f -n ftype=1 $fs_loop_dev >>$seqres.full 2>&1
56 # only 20m for upper dir
57 upper_img=${OVL_BASE_SCRATCH_MNT}/$$.${seq}.img
58 $XFS_IO_PROG -f -c "truncate 20m" $upper_img >>$seqres.full 2>&1
59 upper_loop_dev=`_create_loop_device $upper_img`
60 $MKFS_XFS_PROG -f -n ftype=1 $upper_loop_dev >>$seqres.full 2>&1
62 # mount underlying xfs
63 mkdir -p ${OVL_BASE_SCRATCH_MNT}/lowermnt
64 mkdir -p ${OVL_BASE_SCRATCH_MNT}/uppermnt
65 $MOUNT_PROG $fs_loop_dev ${OVL_BASE_SCRATCH_MNT}/lowermnt
66 $MOUNT_PROG $upper_loop_dev ${OVL_BASE_SCRATCH_MNT}/uppermnt
69 mkdir -p ${OVL_BASE_SCRATCH_MNT}/lowermnt/lower
70 mkdir -p ${OVL_BASE_SCRATCH_MNT}/uppermnt/upper
71 mkdir -p ${OVL_BASE_SCRATCH_MNT}/uppermnt/work
73 lowerd=${OVL_BASE_SCRATCH_MNT}/lowermnt/lower
74 upperd=${OVL_BASE_SCRATCH_MNT}/uppermnt/upper
75 workd=${OVL_BASE_SCRATCH_MNT}/uppermnt/work
77 # Create test file in lower dir, with too big a size for
78 # upper dir to copy up.
79 $XFS_IO_PROG -f -c "truncate 48m" ${lowerd}/test_file \
83 _overlay_scratch_mount_dirs $lowerd $upperd $workd
85 # the open call triggers copy-up and it will fail ENOSPC
86 $XFS_IO_PROG -f -c "o" ${SCRATCH_MNT}/test_file \
90 $UMOUNT_PROG $SCRATCH_MNT
93 _overlay_check_scratch_dirs $lowerd $upperd $workd
95 # unmount undelying xfs, this tiggers panic if memleak happens
96 $UMOUNT_PROG ${OVL_BASE_SCRATCH_MNT}/uppermnt
97 $UMOUNT_PROG ${OVL_BASE_SCRATCH_MNT}/lowermnt
100 echo "Silence is golden"