new file mode 100755
@@ -0,0 +1,84 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2020 Chandan Babu R. All Rights Reserved.
+#
+# FS QA Test 524
+#
+# Verify that XFS does not cause inode fork's extent count to overflow when
+# punching out an extent.
+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()
+{
+ cd /
+ rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/inject
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+_supported_fs xfs
+_require_scratch
+_require_xfs_debug
+_require_xfs_io_command "fpunch"
+_require_xfs_io_command "finsert"
+_require_xfs_io_command "fcollapse"
+_require_xfs_io_command "fzero"
+_require_xfs_io_error_injection "reduce_max_iextents"
+
+echo "Format and mount fs"
+_scratch_mkfs >> $seqres.full
+_scratch_mount >> $seqres.full
+
+bsize=$(_get_file_block_size $SCRATCH_MNT)
+nr_blks=30
+
+testfile=$SCRATCH_MNT/testfile
+
+echo "Inject reduce_max_iextents error tag"
+_scratch_inject_error reduce_max_iextents 1
+
+for op in fpunch finsert fcollapse fzero; do
+ echo "* $op regular file"
+
+ echo "Create \$testfile"
+ $XFS_IO_PROG -f -s \
+ -c "pwrite -b $((nr_blks * bsize)) 0 $((nr_blks * bsize))" \
+ $testfile >> $seqres.full
+
+ echo "$op alternating blocks"
+ for i in $(seq 1 2 $((nr_blks - 1))); do
+ $XFS_IO_PROG -f -c "$op $((i * bsize)) $bsize" $testfile \
+ >> $seqres.full 2>&1
+ [[ $? != 0 ]] && break
+ done
+
+ echo "Verify \$testfile's extent count"
+
+ nextents=$($XFS_IO_PROG -f -c 'stat' $testfile | grep -i nextents)
+ nextents=${nextents##fsxattr.nextents = }
+ if (( $nextents > 10 )); then
+ echo "Extent count overflow check failed: nextents = $nextents"
+ exit 1
+ fi
+
+ rm $testfile
+done
+
+# success, all done
+status=0
+exit
new file mode 100644
@@ -0,0 +1,19 @@
+QA output created by 524
+Format and mount fs
+Inject reduce_max_iextents error tag
+* fpunch regular file
+Create $testfile
+fpunch alternating blocks
+Verify $testfile's extent count
+* finsert regular file
+Create $testfile
+finsert alternating blocks
+Verify $testfile's extent count
+* fcollapse regular file
+Create $testfile
+fcollapse alternating blocks
+Verify $testfile's extent count
+* fzero regular file
+Create $testfile
+fzero alternating blocks
+Verify $testfile's extent count
@@ -521,6 +521,7 @@
521 auto quick realtime growfs
522 auto quick quota
523 auto quick realtime growfs
+524 auto quick punch zero insert collapse
758 auto quick rw attr realtime
759 auto quick rw realtime
760 auto quick rw collapse punch insert zero prealloc
This test verifies that XFS does not cause inode fork's extent count to overflow when punching out an extent. Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com> --- tests/xfs/524 | 84 +++++++++++++++++++++++++++++++++++++++++++++++ tests/xfs/524.out | 19 +++++++++++ tests/xfs/group | 1 + 3 files changed, 104 insertions(+) create mode 100755 tests/xfs/524 create mode 100644 tests/xfs/524.out