Re: [syzbot] [f2fs?] KASAN: use-after-free Read in __update_extent_tree_range

From: syzbot
Date: Wed Jan 04 2023 - 14:38:35 EST


syzbot has bisected this issue to:

commit 3db1de0e582c358dd013f3703cd55b5fe4076436
Author: Daeho Jeong <daehojeong@xxxxxxxxxx>
Date: Thu Apr 28 18:18:09 2022 +0000

f2fs: change the current atomic write way

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15c77d38480000
start commit: 1b929c02afd3 Linux 6.2-rc1
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=17c77d38480000
console output: https://syzkaller.appspot.com/x/log.txt?x=13c77d38480000
kernel config: https://syzkaller.appspot.com/x/.config?x=2651619a26b4d687
dashboard link: https://syzkaller.appspot.com/bug?extid=823000d23b3400619f7c
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12597238480000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11ae9d7f880000

Reported-by: syzbot+823000d23b3400619f7c@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 3db1de0e582c ("f2fs: change the current atomic write way")

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