| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2018 FUJITSU. All Rights Reserved. |
| # |
| # FS QA Test No. 439 |
| # |
| # Regression test for commit: |
| # 9c92ee2 ("xfs: validate sb_logsunit is a multiple of the fs blocksize") |
| # |
| # If log stripe unit isn't a multiple of the fs blocksize and mounting, |
| # the invalid sb_logsunit leads to crash as soon as we try to write to |
| # the log. |
| # |
| seq=`basename "$0"` |
| seqres="$RESULT_DIR/$seq" |
| echo "QA output created by $seq" |
| |
| here=`pwd` |
| tmp=/tmp/$$ |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| rm -rf $tmp.* |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| |
| # real QA test starts here |
| _supported_fs xfs |
| _require_scratch_nocheck |
| # We corrupt XFS on purpose, and check if assert failures would crash system. |
| _require_no_xfs_bug_on_assert |
| |
| rm -f "$seqres.full" |
| |
| # Format |
| _scratch_mkfs > $seqres.full 2>&1 || _fail "mkfs failed" |
| |
| # Set logsunit to a value which is not a multiple of the fs blocksize |
| blksz=$(_scratch_xfs_get_sb_field blocksize) |
| _scratch_xfs_set_sb_field logsunit $((blksz - 1)) >> $seqres.full 2>&1 |
| |
| # Check if logsunit is set correctly |
| lsunit=$(_scratch_xfs_get_sb_field logsunit) |
| [ $lsunit -ne $((blksz - 1)) ] && _notrun "failed to set sb_logsunit" |
| |
| # Mount and writing log may trigger a crash on buggy kernel |
| # The fix applied kernel refuses to mount, so a mount failure is |
| # expected |
| if _try_scratch_mount >> $seqres.full 2>&1; then |
| for i in $(seq 1 1000); do |
| echo > ${SCRATCH_MNT}/$i |
| done |
| _scratch_unmount |
| fi |
| |
| # We may trigger assert related WARNINGs if we corrupt log on a CONFIG_XFS_WARN |
| # or CONFIG_XFS_DEBUG (when bug_on_assert is disabled) build, so filter them. |
| _check_dmesg _filter_assert_dmesg |
| |
| echo "Silence is golden" |
| |
| # success, all done |
| status=0 |
| exit |