diff options
| author | Jan Kara <jack@suse.cz> | 2018-05-25 12:51:25 -0400 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2018-12-02 00:02:30 +0100 |
| commit | 0c30a94a4c51cafccd72511c07ad4acb6df0e81d (patch) | |
| tree | 56892e9232bef130dab398b0ba956a2f845eca9b /kernel | |
| parent | 730f2d3517c7d3eb70d936a847c831d7a0e35d08 (diff) | |
ext4: fix fencepost error in check for inode count overflow during resize
commit 4f2f76f751433908364ccff82f437a57d0e6e9b7 upstream.
ext4_resize_fs() has an off-by-one bug when checking whether growing of
a filesystem will not overflow inode count. As a result it allows a
filesystem with 8192 inodes per group to grow to 64TB which overflows
inode count to 0 and makes filesystem unusable. Fix it.
Cc: stable@vger.kernel.org
Fixes: 3f8a6411fbada1fa482276591e037f3b1adcf55b
Reported-by: Jaco Kroon <jaco@uls.co.za>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions