Messages in this thread Patch in this message | | | Date | Mon, 13 Jun 2022 21:39:12 +0200 | From | David Sterba <> | Subject | Re: [syzbot] KASAN: use-after-free Read in copy_page_from_iter_atomic (2) |
| |
On Fri, Jun 10, 2022 at 12:10:19AM -0700, syzbot wrote: > syzbot has bisected this issue to: > > commit 4cd4aed63125ccd4efc35162627827491c2a7be7 > Author: Christoph Hellwig <hch@lst.de> > Date: Fri May 27 08:43:20 2022 +0000 > > btrfs: fold repair_io_failure into btrfs_repair_eb_io_failure
Josef also reported a crash and found a bug in the patch, now added as fixup that'll be in for-next:
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 89a319e65197..5eac9ffb7499 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2260,7 +2260,7 @@ int btrfs_repair_eb_io_failure(const struct extent_buffer *eb, int mirror_num) __bio_add_page(&bio, p, PAGE_SIZE, start - page_offset(p)); ret = btrfs_map_repair_bio(fs_info, &bio, mirror_num); bio_uninit(&bio); - + start += PAGE_SIZE; if (ret) return ret; } ---
| |