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| author |   Theodore Ts'o <tytso@mit.edu> | 2019-11-21 13:09:43 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2019-12-26 11:28:31 -0500 |
| commit | 46f870d690fecc792a66730dcbbf0aa109f5f9ab (patch) | |
| tree | 0e517f47ca1c5073481e0d8bfc8631f24388dbca /fs/ext4/inode.c | |
| parent | ext4: save the error code which triggered an ext4_error() in the superblock (diff) | |
| download | linux-dev-46f870d690fecc792a66730dcbbf0aa109f5f9ab.tar.xz linux-dev-46f870d690fecc792a66730dcbbf0aa109f5f9ab.zip | |
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/inode.c')
| -rw-r--r-- | fs/ext4/inode.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 23fa585206f0..c3270aaa2b75 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -4243,6 +4243,8 @@ static int __ext4_get_inode_loc(struct inode *inode, bh = sb_getblk(sb, block); if (unlikely(!bh)) return -ENOMEM; + if (ext4_simulate_fail(sb, EXT4_SIM_INODE_EIO)) + goto simulate_eio; if (!buffer_uptodate(bh)) { lock_buffer(bh); @@ -4341,6 +4343,7 @@ make_io: blk_finish_plug(&plug); wait_on_buffer(bh); if (!buffer_uptodate(bh)) { + simulate_eio: ext4_set_errno(inode->i_sb, EIO); EXT4_ERROR_INODE_BLOCK(inode, block, "unable to read itable block"); @@ -4555,7 +4558,8 @@ struct inode *__ext4_iget(struct super_block *sb, unsigned long ino, sizeof(gen)); } - if (!ext4_inode_csum_verify(inode, raw_inode, ei)) { + if (!ext4_inode_csum_verify(inode, raw_inode, ei) || + ext4_simulate_fail(sb, EXT4_SIM_INODE_CRC)) { ext4_set_errno(inode->i_sb, EFSBADCRC); ext4_error_inode(inode, function, line, 0, "iget: checksum invalid"); |