On Tue, Jul 03, 2018 at 05:10:04PM +0800, Qu Wenruo wrote: > Can be fetched from github, which is based on v4.18-rc1 tag: > https://github.com/adam900710/linux/tree/tree_checker_enhance > > Reported by Xu Wen <wen...@gatech.edu>, some crafted btrfs image can > cause unexpected kernel behavior. > > All of them are related to block group and chunk, so this patchset will > enhance block group and chunk verification, so kernel can detect them > and error out gracefully (with user friendly error message showing > what's going wrong) > > Obvious corruption (don't need to cross check with chunk/block group), > will be addressed by enhanced tree-checker. > (Most crafted images will be caught by tree-checker) > > More complex corruption will be addressed mostly at > btrfs_read_block_groups(), doing extra cross reference check for > chunk<->block group mapping. > It may cause extra mount time, but compared to the existing time > consuming block group items search, all added check is done completely > in memory using rb_tree, so it shouldn't add too much overhead. > > Qu Wenruo (5): > btrfs: tree-checker: Verify block_group_item > btrfs: tree-checker: Detect invalid empty essential tree > btrfs: relocation: Only remove reloc rb_trees if reloc control has > been initialized > btrfs: Check each block group has corresponding chunk at mount time > btrfs: Verify every chunk has corresponding block group at mount time
Patches 1-3 queued, thanks. 4 and 5 have some comments. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
