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| author | Jan Kara <jack@suse.cz> | 2011-12-18 17:37:02 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2011-12-18 17:37:02 -0500 |
| commit | acd6ad83517639e8f09a8c5525b1dccd81cd2a10 (patch) | |
| tree | cdfa0a3cc0c65ce27f9e41a5080e9cfc78776b7f | |
| parent | 5635a62b83c04d05e4eb4575a1c3de51a35bacdc (diff) | |
| download | blackbird-op-linux-acd6ad83517639e8f09a8c5525b1dccd81cd2a10.tar.gz blackbird-op-linux-acd6ad83517639e8f09a8c5525b1dccd81cd2a10.zip | |
ext4: fix error handling on inode bitmap corruption
When insert_inode_locked() fails in ext4_new_inode() it most likely means inode
bitmap got corrupted and we allocated again inode which is already in use. Also
doing unlock_new_inode() during error recovery is wrong since the inode does
not have I_NEW set. Fix the problem by jumping to fail: (instead of fail_drop:)
which declares filesystem error and does not call unlock_new_inode().
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| -rw-r--r-- | fs/ext4/ialloc.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 00beb4f9cc4f..8fb6844f9734 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -885,8 +885,12 @@ got: if (IS_DIRSYNC(inode)) ext4_handle_sync(handle); if (insert_inode_locked(inode) < 0) { - err = -EINVAL; - goto fail_drop; + /* + * Likely a bitmap corruption causing inode to be allocated + * twice. + */ + err = -EIO; + goto fail; } spin_lock(&sbi->s_next_gen_lock); inode->i_generation = sbi->s_next_generation++; |
