linux-kernel - Re: [syzbot] [kernfs?] possible deadlock in kernfs

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Message-ID: <6900db63.050a0220.17b81f.0026.GAE@google.com>
Date: Tue, 28 Oct 2025 08:04:03 -0700
From: syzbot <syzbot+2d7d0fbb5fb979113ff3@...kaller.appspotmail.com>
To: axboe@...nel.dk, eadavis@...com, gregkh@...uxfoundation.org, 
	hdanton@...a.com, linux-kernel@...r.kernel.org, ming.lei@...hat.com, 
	netdev@...r.kernel.org, nilay@...ux.ibm.com, sunjunchao2870@...il.com, 
	sunjunchao@...edance.com, syzkaller-bugs@...glegroups.com, tj@...nel.org, 
	yukuai3@...wei.com
Subject: Re: [syzbot] [kernfs?] possible deadlock in kernfs_remove

syzbot suspects this issue was fixed by commit:

commit 8f5845e0743bf3512b71b3cb8afe06c192d6acc4
Author: Julian Sun <sunjunchao2870@...il.com>
Date:   Tue Aug 12 15:42:57 2025 +0000

    block: restore default wbt enablement

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13b977e2580000
start commit:   759dfc7d04ba netlink: avoid infinite retry looping in netl..
git tree:       net
kernel config:  https://syzkaller.appspot.com/x/.config?x=ac0888b9ad46cd69
dashboard link: https://syzkaller.appspot.com/bug?extid=2d7d0fbb5fb979113ff3
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1136d9bc580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1536d9bc580000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: block: restore default wbt enablement

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