linux-kernel - Re: [syzbot] [kvm?] WARNING: locking bug in kvm_xen_set_evtchn

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Message-ID: <6745da06.050a0220.1286eb.0018.GAE@google.com>
Date: Tue, 26 Nov 2024 06:24:06 -0800
From: syzbot <syzbot+919877893c9d28162dc2@...kaller.appspotmail.com>
To: bigeasy@...utronix.de, boqun.feng@...il.com, bp@...en8.de, 
	dave.hansen@...ux.intel.com, dwmw2@...radead.org, hdanton@...a.com, 
	hpa@...or.com, kvm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	longman@...hat.com, mingo@...hat.com, paul@....org, pbonzini@...hat.com, 
	seanjc@...gle.com, syzkaller-bugs@...glegroups.com, tglx@...utronix.de, 
	x86@...nel.org
Subject: Re: [syzbot] [kvm?] WARNING: locking bug in kvm_xen_set_evtchn_fast

syzbot has bisected this issue to:

commit 560af5dc839eef08a273908f390cfefefb82aa04
Author: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Date:   Wed Oct 9 15:45:03 2024 +0000

    lockdep: Enable PROVE_RAW_LOCK_NESTING with PROVE_LOCKING.

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=162ef5c0580000
start commit:   06afb0f36106 Merge tag 'trace-v6.13' of git://git.kernel.o..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=152ef5c0580000
console output: https://syzkaller.appspot.com/x/log.txt?x=112ef5c0580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=95b76860fd16c857
dashboard link: https://syzkaller.appspot.com/bug?extid=919877893c9d28162dc2
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=142981c0580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1371975f980000

Reported-by: syzbot+919877893c9d28162dc2@...kaller.appspotmail.com
Fixes: 560af5dc839e ("lockdep: Enable PROVE_RAW_LOCK_NESTING with PROVE_LOCKING.")

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