linux-kernel - Re: WARNING in handle_exception

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Date:   Wed, 11 Nov 2020 12:10:45 +0100
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     syzbot <syzbot+4e78ae6b12b00b9d1042@...kaller.appspotmail.com>
Cc:     Borislav Petkov <bp@...en8.de>, "H. Peter Anvin" <hpa@...or.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, KVM list <kvm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        "Christopherson, Sean J" <sean.j.christopherson@...el.com>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Vitaly Kuznetsov <vkuznets@...hat.com>, wanpengli@...cent.com,
        Will Deacon <will@...nel.org>,
        "the arch/x86 maintainers" <x86@...nel.org>
Subject: Re: WARNING in handle_exception_nmi

On Thu, Nov 5, 2020 at 6:17 PM syzbot
<syzbot+4e78ae6b12b00b9d1042@...kaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit f8e48a3dca060e80f672d398d181db1298fbc86c
> Author: Peter Zijlstra <peterz@...radead.org>
> Date:   Thu Oct 22 10:23:02 2020 +0000
>
>     lockdep: Fix preemption WARN for spurious IRQ-enable
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17bbfa8a500000
> start commit:   d3d45f82 Merge tag 'pinctrl-v5.9-2' of git://git.kernel.or..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=89ab6a0c48f30b49
> dashboard link: https://syzkaller.appspot.com/bug?extid=4e78ae6b12b00b9d1042
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12f24a0b900000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=167b838f900000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: lockdep: Fix preemption WARN for spurious IRQ-enable
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

#syz fix: lockdep: Fix preemption WARN for spurious IRQ-enable