linux-kernel - Re: WARNING in free_loaded

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Date:   Sat, 30 Mar 2019 21:53:01 -0700
From:   syzbot <syzbot+01bc9e7a8a3f138b71cf@...kaller.appspotmail.com>
To:     dvyukov@...gle.com, hpa@...or.com, jmattson@...gle.com,
        karahmed@...zon.de, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, mingo@...hat.com,
        pbonzini@...hat.com, rkrcmar@...hat.com,
        syzkaller-bugs@...glegroups.com, tglx@...utronix.de, x86@...nel.org
Subject: Re: WARNING in free_loaded_vmcs (2)

syzbot has bisected this bug to:

commit 8fcc4b5923af5de58b80b53a069453b135693304
Author: Jim Mattson <jmattson@...gle.com>
Date:   Tue Jul 10 09:27:20 2018 +0000

     kvm: nVMX: Introduce KVM_CAP_NESTED_STATE

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17fba63f200000
start commit:   60c1f892 Merge tag 'dma-mapping-4.19-2' of git://git.infra..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=1407a63f200000
console output: https://syzkaller.appspot.com/x/log.txt?x=1007a63f200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=4c7e83258d6e0156
dashboard link: https://syzkaller.appspot.com/bug?extid=01bc9e7a8a3f138b71cf
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12a6513e400000

Reported-by: syzbot+01bc9e7a8a3f138b71cf@...kaller.appspotmail.com
Fixes: 8fcc4b5923af ("kvm: nVMX: Introduce KVM_CAP_NESTED_STATE")

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