linux-kernel - Re: [syzbot] [f2fs?] KASAN: use-after-free Read in __update_extent_tree

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Message-ID: <000000000000a1ed5905f1755333@google.com>
Date:   Wed, 04 Jan 2023 11:38:20 -0800
From:   syzbot <syzbot+823000d23b3400619f7c@...kaller.appspotmail.com>
To:     chao@...nel.org, daehojeong@...gle.com, jaegeuk@...nel.org,
        linux-f2fs-devel@...ts.sourceforge.net,
        linux-kernel@...r.kernel.org, mingo@...hat.com,
        rostedt@...dmis.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [f2fs?] KASAN: use-after-free Read in __update_extent_tree_range

syzbot has bisected this issue to:

commit 3db1de0e582c358dd013f3703cd55b5fe4076436
Author: Daeho Jeong <daehojeong@...gle.com>
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@...kaller.appspotmail.com
Fixes: 3db1de0e582c ("f2fs: change the current atomic write way")

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