tree ff6c9ec2d42a9d5e54c640a1ff88f0a8dc4404cf
parent 109f2365f1928af241b2ccbd0f6ba0b93d911288
author Stefan Behrens <sbehrens@giantdisaster.de> 1352121049 +0000
committer Josef Bacik <jbacik@fusionio.com> 1355350526 -0500

Btrfs: Don't trust the superblock label and simply printk("%s") it

Someone who is root or capable(CAP_SYS_ADMIN) could corrupt the
superblock and make Btrfs printk("%s") crash while holding the
uuid_mutex since nobody forces a limit on the string. Since the
uuid_mutex is significant, the system would be unusable
afterwards.

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>