On Thu, Mar 21, 2024 at 05:26:50PM +0100, Jan Kara wrote: > ext4_xattr_set_entry() creates new EA inodes while holding buffer lock > on the external xattr block. This is problematic as it nests all the > allocation locking (which acquires locks on other buffers) under the > buffer lock. This can even deadlock when the filesystem is corrupted and > e.g. quota file is setup to contain xattr block as data block. Move the > allocation of EA inode out of ext4_xattr_set_entry() into the callers. > > Reported-by: syzbot+a43d4f48b8397d0e41a9@xxxxxxxxxxxxxxxxxxxxxxxxx > Signed-off-by: Jan Kara <jack@xxxxxxx> Applied, thanks. - Ted
