On Tue, Apr 25, 2017 at 04:40:16PM +0800, Qu Wenruo wrote: > For fuzzed image bko-156811-bad-parent-ref-qgroup-verify.raw, it cause > qgroup to report -ENOMEM. > > But the fact is, such image is heavy damaged so there is not valid root > item for extent tree. > > Normal extent tree key in root tree should be (EXTENT_TREE ROOT_ITEM 0), > while in that fuzzed image, we got (EXTENT_TREE EXXTENT_DATA SOME_NUMBER). > > It's btrfs_find_last_root() that only checks the objectid, not caring > key type leads to such problem. > > Fix by doing extra check on key type for such case. > > Signed-off-by: Qu Wenruo <quwenruo@xxxxxxxxxxxxxx> Applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
