From 1f2e32346f7d082246d96e4cedbd54b8739b8ea0 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Sun, 18 Dec 2011 17:37:02 -0500 Subject: 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 Signed-off-by: "Theodore Ts'o" Signed-off-by: Greg Kroah-Hartman Signed-off-by: Willy Tarreau --- fs/ext4/ialloc.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'fs/ext4') diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 55a93f5bb003..29d9055b0a73 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -1015,8 +1015,12 @@ 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++; -- cgit v1.2.3