linux-kernel - Re: [syzbot] [bcachefs?] KASAN: use-after-free Read in check_extent

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Message-ID: <67529576.050a0220.a30f1.0131.GAE@google.com>
Date: Thu, 05 Dec 2024 22:11:02 -0800
From: syzbot <syzbot+fbc1f6040dd365cce0d8@...kaller.appspotmail.com>
To: kent.overstreet@...ux.dev, linux-bcachefs@...r.kernel.org, 
	linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [bcachefs?] KASAN: use-after-free Read in check_extent_overbig

syzbot has bisected this issue to:

commit bf4baaa087e2be0279991f1dbf9acaa7a4c9148c
Author: Kent Overstreet <kent.overstreet@...ux.dev>
Date:   Sat Oct 5 21:37:02 2024 +0000

    bcachefs: Fix lockdep splat in bch2_accounting_read

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1147e8df980000
start commit:   feffde684ac2 Merge tag 'for-6.13-rc1-tag' of git://git.ker..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1347e8df980000
console output: https://syzkaller.appspot.com/x/log.txt?x=1547e8df980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=91c852e3d1d7c1a6
dashboard link: https://syzkaller.appspot.com/bug?extid=fbc1f6040dd365cce0d8
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16804020580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12ed1330580000

Reported-by: syzbot+fbc1f6040dd365cce0d8@...kaller.appspotmail.com
Fixes: bf4baaa087e2 ("bcachefs: Fix lockdep splat in bch2_accounting_read")

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