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由 Stefan Behrens 提交于
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: NStefan Behrens <sbehrens@giantdisaster.de> Reviewed-by: NDavid Sterba <dsterba@suse.cz> Signed-off-by: NChris Mason <chris.mason@fusionio.com>
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