linux-kernel - Re: [syzbot] [net?] [ext4?] BUG: corrupted list in __sk

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Message-ID: <67c95ab1.050a0220.15b4b9.002f.GAE@google.com>
Date: Thu, 06 Mar 2025 00:20:01 -0800
From: syzbot <syzbot+2f2bc79f24dae1dc62b6@...kaller.appspotmail.com>
To: adilger.kernel@...ger.ca, adilger@...ger.ca, davem@...emloft.net, 
	edumazet@...gle.com, horms@...nel.org, jack@...e.cz, kuba@...nel.org, 
	kuniyu@...zon.com, linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org, 
	netdev@...r.kernel.org, pabeni@...hat.com, sandeen@...hat.com, 
	syzkaller-bugs@...glegroups.com, tytso@....edu
Subject: Re: [syzbot] [net?] [ext4?] BUG: corrupted list in __sk_destruct (2)

syzbot has bisected this issue to:

commit 5872331b3d91820e14716632ebb56b1399b34fe1
Author: Eric Sandeen <sandeen@...hat.com>
Date:   Wed Jun 17 19:19:04 2020 +0000

    ext4: fix potential negative array index in do_split()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=122e44b7980000
start commit:   7eb172143d55 Linux 6.14-rc5
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=112e44b7980000
console output: https://syzkaller.appspot.com/x/log.txt?x=162e44b7980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=523d3ff8e053340a
dashboard link: https://syzkaller.appspot.com/bug?extid=2f2bc79f24dae1dc62b6
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=126fd5a8580000

Reported-by: syzbot+2f2bc79f24dae1dc62b6@...kaller.appspotmail.com
Fixes: 5872331b3d91 ("ext4: fix potential negative array index in do_split()")

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