diff mbox series

[V4,05/11] xfs: Check for extent overflow when adding/removing xattrs

Message ID 20210118062022.15069-6-chandanrlinux@gmail.com (mailing list archive)
State Accepted, archived
Headers show
Series xfs: Tests to verify inode fork extent count overflow detection | expand

Commit Message

Chandan Babu R Jan. 18, 2021, 6:20 a.m. UTC 
This test verifies that XFS does not cause inode fork's extent count to
overflow when adding/removing xattrs.

Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com>
---
 tests/xfs/525     | 141 ++++++++++++++++++++++++++++++++++++++++++++++
 tests/xfs/525.out |  18 ++++++
 tests/xfs/group   |   1 +
 3 files changed, 160 insertions(+)
 create mode 100755 tests/xfs/525
 create mode 100644 tests/xfs/525.out

Comments

Darrick J. Wong March 3, 2021, 5:56 p.m. UTC | #1 
On Mon, Jan 18, 2021 at 11:50:16AM +0530, Chandan Babu R wrote:
> This test verifies that XFS does not cause inode fork's extent count to
> overflow when adding/removing xattrs.
> 
> Signed-off-by: Chandan Babu R <chandanrlinux@gmail.com>
> ---
>  tests/xfs/525     | 141 ++++++++++++++++++++++++++++++++++++++++++++++
>  tests/xfs/525.out |  18 ++++++
>  tests/xfs/group   |   1 +
>  3 files changed, 160 insertions(+)
>  create mode 100755 tests/xfs/525
>  create mode 100644 tests/xfs/525.out
> 
> diff --git a/tests/xfs/525 b/tests/xfs/525
> new file mode 100755
> index 00000000..bdca846d
> --- /dev/null
> +++ b/tests/xfs/525
> @@ -0,0 +1,141 @@
> +#! /bin/bash
> +# SPDX-License-Identifier: GPL-2.0
> +# Copyright (c) 2020 Chandan Babu R.  All Rights Reserved.
> +#
> +# FS QA Test 525
> +#
> +# Verify that XFS does not cause inode fork's extent count to overflow when
> +# Adding/removing xattrs.

Nit: 'adding' (no need to capitalize)

Reviewed-by: Darrick J. Wong <djwong@kernel.org>

--D


> +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/attr
> +. ./common/inject
> +. ./common/populate
> +
> +# remove previous $seqres.full before test
> +rm -f $seqres.full
> +
> +# real QA test starts here
> +
> +_supported_fs xfs
> +_require_scratch
> +_require_attrs
> +_require_xfs_debug
> +_require_test_program "punch-alternating"
> +_require_xfs_io_error_injection "reduce_max_iextents"
> +_require_xfs_io_error_injection "bmap_alloc_minlen_extent"
> +
> +echo "Format and mount fs"
> +_scratch_mkfs_sized $((1024 * 1024 * 1024)) >> $seqres.full
> +_scratch_mount >> $seqres.full
> +
> +bsize=$(_get_block_size $SCRATCH_MNT)
> +
> +attr_len=255
> +
> +testfile=$SCRATCH_MNT/testfile
> +
> +echo "Consume free space"
> +fillerdir=$SCRATCH_MNT/fillerdir
> +nr_free_blks=$(stat -f -c '%f' $SCRATCH_MNT)
> +nr_free_blks=$((nr_free_blks * 90 / 100))
> +
> +_fill_fs $((bsize * nr_free_blks)) $fillerdir $bsize 0 >> $seqres.full 2>&1
> +
> +echo "Create fragmented filesystem"
> +for dentry in $(ls -1 $fillerdir/); do
> +	$here/src/punch-alternating $fillerdir/$dentry >> $seqres.full
> +done
> +
> +echo "Inject reduce_max_iextents error tag"
> +_scratch_inject_error reduce_max_iextents 1
> +
> +echo "Inject bmap_alloc_minlen_extent error tag"
> +_scratch_inject_error bmap_alloc_minlen_extent 1
> +
> +echo "* Set xattrs"
> +
> +echo "Create \$testfile"
> +touch $testfile
> +
> +echo "Create xattrs"
> +nr_attrs=$((bsize * 20 / attr_len))
> +for i in $(seq 1 $nr_attrs); do
> +	attr="$(printf "trusted.%0247d" $i)"
> +	$SETFATTR_PROG -n "$attr" $testfile >> $seqres.full 2>&1
> +	[[ $? != 0 ]] && break
> +done
> +
> +echo "Verify \$testfile's naextent count"
> +
> +naextents=$($XFS_IO_PROG -f -c 'stat' $testfile | grep naextents)
> +naextents=${naextents##fsxattr.naextents = }
> +if (( $naextents > 10 )); then
> +	echo "Extent count overflow check failed: naextents = $naextents"
> +	exit 1
> +fi
> +
> +echo "Remove \$testfile"
> +rm $testfile
> +
> +echo "* Remove xattrs"
> +
> +echo "Create \$testfile"
> +touch $testfile
> +
> +echo "Disable reduce_max_iextents error tag"
> +_scratch_inject_error reduce_max_iextents 0
> +
> +echo "Create initial xattr extents"
> +
> +naextents=0
> +last=""
> +start=1
> +nr_attrs=$((bsize / attr_len))
> +
> +while (( $naextents < 4 )); do
> +	end=$((start + nr_attrs - 1))
> +
> +	for i in $(seq $start $end); do
> +		attr="$(printf "trusted.%0247d" $i)"
> +		$SETFATTR_PROG -n $attr $testfile
> +	done
> +
> +	start=$((end + 1))
> +
> +	naextents=$($XFS_IO_PROG -f -c 'stat' $testfile | grep naextents)
> +	naextents=${naextents##fsxattr.naextents = }
> +done
> +
> +echo "Inject reduce_max_iextents error tag"
> +_scratch_inject_error reduce_max_iextents 1
> +
> +echo "Remove xattr to trigger -EFBIG"
> +attr="$(printf "trusted.%0247d" 1)"
> +$SETFATTR_PROG -x "$attr" $testfile >> $seqres.full 2>&1
> +if [[ $? == 0 ]]; then
> +	echo "Xattr removal succeeded; Should have failed "
> +	exit 1
> +fi
> +
> +rm $testfile && echo "Successfully removed \$testfile"
> +
> +# success, all done
> +status=0
> +exit
> diff --git a/tests/xfs/525.out b/tests/xfs/525.out
> new file mode 100644
> index 00000000..74b152d9
> --- /dev/null
> +++ b/tests/xfs/525.out
> @@ -0,0 +1,18 @@
> +QA output created by 525
> +Format and mount fs
> +Consume free space
> +Create fragmented filesystem
> +Inject reduce_max_iextents error tag
> +Inject bmap_alloc_minlen_extent error tag
> +* Set xattrs
> +Create $testfile
> +Create xattrs
> +Verify $testfile's naextent count
> +Remove $testfile
> +* Remove xattrs
> +Create $testfile
> +Disable reduce_max_iextents error tag
> +Create initial xattr extents
> +Inject reduce_max_iextents error tag
> +Remove xattr to trigger -EFBIG
> +Successfully removed $testfile
> diff --git a/tests/xfs/group b/tests/xfs/group
> index 3fa38c36..bd38aff0 100644
> --- a/tests/xfs/group
> +++ b/tests/xfs/group
> @@ -522,3 +522,4 @@
>  522 auto quick quota
>  523 auto quick realtime growfs
>  524 auto quick punch zero insert collapse
> +525 auto quick attr
> -- 
> 2.29.2
>
diff mbox series

Patch

diff --git a/tests/xfs/525 b/tests/xfs/525
new file mode 100755
index 00000000..bdca846d
--- /dev/null
+++ b/tests/xfs/525
@@ -0,0 +1,141 @@ 
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2020 Chandan Babu R.  All Rights Reserved.
+#
+# FS QA Test 525
+#
+# Verify that XFS does not cause inode fork's extent count to overflow when
+# Adding/removing xattrs.
+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/attr
+. ./common/inject
+. ./common/populate
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+_supported_fs xfs
+_require_scratch
+_require_attrs
+_require_xfs_debug
+_require_test_program "punch-alternating"
+_require_xfs_io_error_injection "reduce_max_iextents"
+_require_xfs_io_error_injection "bmap_alloc_minlen_extent"
+
+echo "Format and mount fs"
+_scratch_mkfs_sized $((1024 * 1024 * 1024)) >> $seqres.full
+_scratch_mount >> $seqres.full
+
+bsize=$(_get_block_size $SCRATCH_MNT)
+
+attr_len=255
+
+testfile=$SCRATCH_MNT/testfile
+
+echo "Consume free space"
+fillerdir=$SCRATCH_MNT/fillerdir
+nr_free_blks=$(stat -f -c '%f' $SCRATCH_MNT)
+nr_free_blks=$((nr_free_blks * 90 / 100))
+
+_fill_fs $((bsize * nr_free_blks)) $fillerdir $bsize 0 >> $seqres.full 2>&1
+
+echo "Create fragmented filesystem"
+for dentry in $(ls -1 $fillerdir/); do
+	$here/src/punch-alternating $fillerdir/$dentry >> $seqres.full
+done
+
+echo "Inject reduce_max_iextents error tag"
+_scratch_inject_error reduce_max_iextents 1
+
+echo "Inject bmap_alloc_minlen_extent error tag"
+_scratch_inject_error bmap_alloc_minlen_extent 1
+
+echo "* Set xattrs"
+
+echo "Create \$testfile"
+touch $testfile
+
+echo "Create xattrs"
+nr_attrs=$((bsize * 20 / attr_len))
+for i in $(seq 1 $nr_attrs); do
+	attr="$(printf "trusted.%0247d" $i)"
+	$SETFATTR_PROG -n "$attr" $testfile >> $seqres.full 2>&1
+	[[ $? != 0 ]] && break
+done
+
+echo "Verify \$testfile's naextent count"
+
+naextents=$($XFS_IO_PROG -f -c 'stat' $testfile | grep naextents)
+naextents=${naextents##fsxattr.naextents = }
+if (( $naextents > 10 )); then
+	echo "Extent count overflow check failed: naextents = $naextents"
+	exit 1
+fi
+
+echo "Remove \$testfile"
+rm $testfile
+
+echo "* Remove xattrs"
+
+echo "Create \$testfile"
+touch $testfile
+
+echo "Disable reduce_max_iextents error tag"
+_scratch_inject_error reduce_max_iextents 0
+
+echo "Create initial xattr extents"
+
+naextents=0
+last=""
+start=1
+nr_attrs=$((bsize / attr_len))
+
+while (( $naextents < 4 )); do
+	end=$((start + nr_attrs - 1))
+
+	for i in $(seq $start $end); do
+		attr="$(printf "trusted.%0247d" $i)"
+		$SETFATTR_PROG -n $attr $testfile
+	done
+
+	start=$((end + 1))
+
+	naextents=$($XFS_IO_PROG -f -c 'stat' $testfile | grep naextents)
+	naextents=${naextents##fsxattr.naextents = }
+done
+
+echo "Inject reduce_max_iextents error tag"
+_scratch_inject_error reduce_max_iextents 1
+
+echo "Remove xattr to trigger -EFBIG"
+attr="$(printf "trusted.%0247d" 1)"
+$SETFATTR_PROG -x "$attr" $testfile >> $seqres.full 2>&1
+if [[ $? == 0 ]]; then
+	echo "Xattr removal succeeded; Should have failed "
+	exit 1
+fi
+
+rm $testfile && echo "Successfully removed \$testfile"
+
+# success, all done
+status=0
+exit
diff --git a/tests/xfs/525.out b/tests/xfs/525.out
new file mode 100644
index 00000000..74b152d9
--- /dev/null
+++ b/tests/xfs/525.out
@@ -0,0 +1,18 @@ 
+QA output created by 525
+Format and mount fs
+Consume free space
+Create fragmented filesystem
+Inject reduce_max_iextents error tag
+Inject bmap_alloc_minlen_extent error tag
+* Set xattrs
+Create $testfile
+Create xattrs
+Verify $testfile's naextent count
+Remove $testfile
+* Remove xattrs
+Create $testfile
+Disable reduce_max_iextents error tag
+Create initial xattr extents
+Inject reduce_max_iextents error tag
+Remove xattr to trigger -EFBIG
+Successfully removed $testfile
diff --git a/tests/xfs/group b/tests/xfs/group
index 3fa38c36..bd38aff0 100644
--- a/tests/xfs/group
+++ b/tests/xfs/group
@@ -522,3 +522,4 @@ 
 522 auto quick quota
 523 auto quick realtime growfs
 524 auto quick punch zero insert collapse
+525 auto quick attr