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authorTheodore Ts'o <tytso@mit.edu>2019-11-21 21:09:43 +0300
committerTheodore Ts'o <tytso@mit.edu>2019-12-26 19:28:31 +0300
commit46f870d690fecc792a66730dcbbf0aa109f5f9ab (patch)
tree0e517f47ca1c5073481e0d8bfc8631f24388dbca /fs/ext4/ialloc.c
parent878520ac45f9f698432d4276db3d9144b83931b6 (diff)
downloadlinux-46f870d690fecc792a66730dcbbf0aa109f5f9ab.tar.xz
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/ialloc.c')
-rw-r--r--fs/ext4/ialloc.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 0151ba8ea439..c66e8f9451a2 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -94,7 +94,8 @@ static int ext4_validate_inode_bitmap(struct super_block *sb,
goto verified;
blk = ext4_inode_bitmap(sb, desc);
if (!ext4_inode_bitmap_csum_verify(sb, block_group, desc, bh,
- EXT4_INODES_PER_GROUP(sb) / 8)) {
+ EXT4_INODES_PER_GROUP(sb) / 8) ||
+ ext4_simulate_fail(sb, EXT4_SIM_IBITMAP_CRC)) {
ext4_unlock_group(sb, block_group);
ext4_error(sb, "Corrupt inode bitmap - block_group = %u, "
"inode_bitmap = %llu", block_group, blk);
@@ -192,6 +193,7 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
get_bh(bh);
submit_bh(REQ_OP_READ, REQ_META | REQ_PRIO, bh);
wait_on_buffer(bh);
+ ext4_simulate_fail_bh(sb, bh, EXT4_SIM_IBITMAP_EIO);
if (!buffer_uptodate(bh)) {
put_bh(bh);
ext4_set_errno(sb, EIO);