]> git.proxmox.com Git - mirror_ubuntu-disco-kernel.git/commit
ext4: ext4_fill_super shouldn't return 0 on corruption
authorDarrick J. Wong <djwong@us.ibm.com>
Fri, 19 Nov 2010 14:56:44 +0000 (09:56 -0500)
committerTheodore Ts'o <tytso@mit.edu>
Fri, 19 Nov 2010 14:56:44 +0000 (09:56 -0500)
commit5a9ae68a349aa076bc8557ee2fcf865574459282
tree484c26f74f13a0c5962ac634c90462d98dea8e1a
parent0587aa3d11f9769a301b21bff2c3ed8365606b8d
ext4: ext4_fill_super shouldn't return 0 on corruption

At the start of ext4_fill_super, ret is set to -EINVAL, and any failure path
out of that function returns ret.  However, the generic_check_addressable
clause sets ret = 0 (if it passes), which means that a subsequent failure (e.g.
a group checksum error) returns 0 even though the mount should fail.  This
causes vfs_kern_mount in turn to think that the mount succeeded, leading to an
oops.

A simple fix is to avoid using ret for the generic_check_addressable check,
which was last changed in commit 30ca22c70e3ef0a96ff84de69cd7e8561b416cb2.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
fs/ext4/super.c