summaryrefslogtreecommitdiff
path: root/fs/ext4/balloc.c
diff options
context:
space:
mode:
authorTheodore Ts'o <tytso@mit.edu>2019-11-21 13:09:43 -0500
committerTheodore Ts'o <tytso@mit.edu>2019-12-26 11:28:31 -0500
commit46f870d690fecc792a66730dcbbf0aa109f5f9ab (patch)
tree0e517f47ca1c5073481e0d8bfc8631f24388dbca /fs/ext4/balloc.c
parent878520ac45f9f698432d4276db3d9144b83931b6 (diff)
ext4: simulate various I/O and checksum errors when reading metadata
This allows us to test various error handling code paths Link: https://lore.kernel.org/r/20191209012317.59398-1-tytso@mit.edu Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/balloc.c')
-rw-r--r--fs/ext4/balloc.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 102c38527a10..5f993a411251 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -371,7 +371,8 @@ static int ext4_validate_block_bitmap(struct super_block *sb,
if (buffer_verified(bh))
goto verified;
if (unlikely(!ext4_block_bitmap_csum_verify(sb, block_group,
- desc, bh))) {
+ desc, bh) ||
+ ext4_simulate_fail(sb, EXT4_SIM_BBITMAP_CRC))) {
ext4_unlock_group(sb, block_group);
ext4_error(sb, "bg %u: bad block bitmap checksum", block_group);
ext4_mark_group_bitmap_corrupted(sb, block_group,
@@ -505,6 +506,7 @@ int ext4_wait_block_bitmap(struct super_block *sb, ext4_group_t block_group,
if (!desc)
return -EFSCORRUPTED;
wait_on_buffer(bh);
+ ext4_simulate_fail_bh(sb, bh, EXT4_SIM_BBITMAP_EIO);
if (!buffer_uptodate(bh)) {
ext4_set_errno(sb, EIO);
ext4_error(sb, "Cannot read block bitmap - "