Re: [syzbot] KASAN: use-after-free Read in copy_page_from_iter_atomic (2)

syzbot
2022-06-10T07:10:42Z

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

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1332525ff00000
start commit: ff539ac73ea5 Add linux-next specific files for 20220609
git tree: linux-next
final oops: https://syzkaller.appspot.com/x/report.txt?x=10b2525ff00000
console output: https://syzkaller.appspot.com/x/log.txt?x=1732525ff00000
kernel config: https://syzkaller.appspot.com/x/.config?x=a5002042f00a8bce
dashboard link: https://syzkaller.appspot.com/bug?extid=d2dd123304b4ae59f1bd
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10d6d7cff00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1113b2bff00000

Reported-by: syzbot+d2dd123304b4ae59f1bd@syzkaller.appspotmail.com
Fixes: 4cd4aed63125 ("btrfs: fold repair_io_failure into btrfs_repair_eb_io_failure")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection