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

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Date: Sat, 13 Jan 2024 20:59:04 -0800
From: syzbot <syzbot+a5e651ca75fa0260acd5@...kaller.appspotmail.com>
To: chao@...nel.org, eadavis@...com, ebiggers@...gle.com, jaegeuk@...nel.org, 
	linux-f2fs-devel@...ts.sourceforge.net, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [f2fs?] KASAN: slab-use-after-free Read in destroy_device_list

syzbot has bisected this issue to:

commit 275dca4630c165edea9abe27113766bc1173f878
Author: Eric Biggers <ebiggers@...gle.com>
Date:   Wed Dec 27 17:14:28 2023 +0000

    f2fs: move release of block devices to after kill_block_super()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10639913e80000
start commit:   052d534373b7 Merge tag 'exfat-for-6.8-rc1' of git://git.ke..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=12639913e80000
console output: https://syzkaller.appspot.com/x/log.txt?x=14639913e80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=878a2a4af11180a7
dashboard link: https://syzkaller.appspot.com/bug?extid=a5e651ca75fa0260acd5
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=167b0f47e80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11255313e80000

Reported-by: syzbot+a5e651ca75fa0260acd5@...kaller.appspotmail.com
Fixes: 275dca4630c1 ("f2fs: move release of block devices to after kill_block_super()")

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