[f2fs-dev] [PATCH] f2fs/023: test sanity check condition w/ error injection

[Chao Yu via Linux-f2fs-devel <linux-f2fs-devel@lists.sourceforge.net>]

After commit 5c1768b67250 ("f2fs: fix to do sanity check correctly on
i_inline_xattr_size"), f2fs should handle corrupted i_inline_xattr_size
correctly, let's add this regression testcase to check that.

Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Chao Yu <chao@kernel.org>
---
 tests/f2fs/023     | 44 ++++++++++++++++++++++++++++++++++++++++++++
 tests/f2fs/023.out |  2 ++
 2 files changed, 46 insertions(+)
 create mode 100755 tests/f2fs/023
 create mode 100644 tests/f2fs/023.out

diff --git a/tests/f2fs/023 b/tests/f2fs/023
new file mode 100755
index 00000000..d1b7df32
--- /dev/null
+++ b/tests/f2fs/023
@@ -0,0 +1,44 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2025 Chao Yu <chao@kernel.org>
+#
+# FS QA Test No. f2fs/023
+#
+# This testcase tries to inject fault into inode.i_inline_xattr_size,
+# and check whether sanity check of f2fs can handle fault correctly.
+#
+
+. ./common/preamble
+_begin_fstest auto quick rw
+
+_fixed_by_kernel_commit 5c1768b67250 \
+        "f2fs: fix to do sanity check correctly on i_inline_xattr_size"
+
+_require_scratch_nocheck
+_require_inject_f2fs_command node i_inline
+_require_inject_f2fs_command node i_inline_xattr_size
+
+testfile=$SCRATCH_MNT/testfile
+
+# remove all mkfs options to avoid layout change of on-disk inode
+export MKFS_OPTIONS=""
+
+_scratch_mkfs "-O extra_attr,flexible_inline_xattr" >> $seqres.full
+_scratch_mount "-o inline_xattr_size=512" >>$seqres.full 2>&1
+touch $testfile
+_scratch_unmount
+
+# inject .i_inline field: clear F2FS_EXTRA_ATTR bit
+$F2FS_INJECT_PROG --node --mb i_inline --nid 4 --val 0x1 $SCRATCH_DEV \
+		>>$seqres.full || _fail "failed to inject i_inline"
+
+# inject .i_inline_xattr_size field from 512 to 2048
+$F2FS_INJECT_PROG --node --mb i_inline_xattr_size --nid 4 --val 2048 $SCRATCH_DEV \
+		>>$seqres.full || _fail "failed to inject i_inline_xattr_size"
+
+_scratch_mount
+
+getfattr -n user.test "$testfile" 2>&1 | awk -F ': ' '/Structure needs cleaning/ { print $NF }'
+
+status=0
+exit
diff --git a/tests/f2fs/023.out b/tests/f2fs/023.out
new file mode 100644
index 00000000..7f16f33f
--- /dev/null
+++ b/tests/f2fs/023.out
@@ -0,0 +1,2 @@
+QA output created by 023
+Structure needs cleaning
-- 
2.49.0



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