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| author | Jan Kara <jack@suse.cz> | 2011-12-18 17:37:02 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-05-21 09:40:04 -0700 |
| commit | 1a28fbbebe6bd7e3f0338663302b3b3ce500e088 (patch) | |
| tree | 98279af6779360496ef7a93e6e85f03a25026dbc | |
| parent | 8e8a21270cbfc41bf3bf2e014b99dc113ba554ec (diff) | |
| download | linux-stable-1a28fbbebe6bd7e3f0338663302b3b3ce500e088.tar.gz linux-stable-1a28fbbebe6bd7e3f0338663302b3b3ce500e088.tar.bz2 linux-stable-1a28fbbebe6bd7e3f0338663302b3b3ce500e088.zip | |
ext4: fix error handling on inode bitmap corruption
commit acd6ad83517639e8f09a8c5525b1dccd81cd2a10 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 21bb2f61e502..412469b241a8 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -1021,8 +1021,12 @@ 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++; |