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 $seqres.full before test
37 # real QA test starts here
39 # Modify as appropriate.
41 # Use non-default scratch underlying overlay dirs, we need to check
42 # them explicity after test.
43 _require_scratch_nocheck
46 # Remove all files from previous tests
49 # setup loop images fs for overlayfs
50 lower_img=${OVL_BASE_SCRATCH_MNT}/${seq}.$$.img
51 $XFS_IO_PROG -f -c "truncate 120m" $lower_img >>$seqres.full 2>&1
52 fs_loop_dev=`_create_loop_device $lower_img`
53 $MKFS_XFS_PROG -f -n ftype=1 $fs_loop_dev >>$seqres.full 2>&1
55 # only 20m for upper dir
56 upper_img=${OVL_BASE_SCRATCH_MNT}/$$.${seq}.img
57 $XFS_IO_PROG -f -c "truncate 20m" $upper_img >>$seqres.full 2>&1
58 upper_loop_dev=`_create_loop_device $upper_img`
59 $MKFS_XFS_PROG -f -n ftype=1 $upper_loop_dev >>$seqres.full 2>&1
61 # mount underlying xfs
62 mkdir -p ${OVL_BASE_SCRATCH_MNT}/lowermnt
63 mkdir -p ${OVL_BASE_SCRATCH_MNT}/uppermnt
64 $MOUNT_PROG $fs_loop_dev ${OVL_BASE_SCRATCH_MNT}/lowermnt
65 $MOUNT_PROG $upper_loop_dev ${OVL_BASE_SCRATCH_MNT}/uppermnt
68 mkdir -p ${OVL_BASE_SCRATCH_MNT}/lowermnt/lower
69 mkdir -p ${OVL_BASE_SCRATCH_MNT}/uppermnt/upper
70 mkdir -p ${OVL_BASE_SCRATCH_MNT}/uppermnt/work
72 lowerd=${OVL_BASE_SCRATCH_MNT}/lowermnt/lower
73 upperd=${OVL_BASE_SCRATCH_MNT}/uppermnt/upper
74 workd=${OVL_BASE_SCRATCH_MNT}/uppermnt/work
76 # Create test file in lower dir, with too big a size for
77 # upper dir to copy up.
78 $XFS_IO_PROG -f -c "truncate 48m" ${lowerd}/test_file \
82 _overlay_scratch_mount_dirs $lowerd $upperd $workd
84 # the open call triggers copy-up and it will fail ENOSPC
85 $XFS_IO_PROG -f -c "o" ${SCRATCH_MNT}/test_file \
89 $UMOUNT_PROG $SCRATCH_MNT
92 _overlay_check_scratch_dirs $lowerd $upperd $workd
94 # unmount undelying xfs, this tiggers panic if memleak happens
95 $UMOUNT_PROG ${OVL_BASE_SCRATCH_MNT}/uppermnt
96 $UMOUNT_PROG ${OVL_BASE_SCRATCH_MNT}/lowermnt
99 echo "Silence is golden"