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SubjectRe: [syzbot] WARNING in nested_vmx_vmexit
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syzbot has bisected this issue to:

commit c8607e4a086fae05efe5bffb47c5199c65e7216e
Author: Maxim Levitsky <mlevitsk@redhat.com>
Date: Mon Sep 13 14:09:53 2021 +0000

KVM: x86: nVMX: don't fail nested VM entry on invalid guest state if !from_vmentry

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10f21e3ab00000
start commit: f80ef9e49fdf Merge tag 'docs-5.16-3' of git://git.lwn.net/..
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=12f21e3ab00000
console output: https://syzkaller.appspot.com/x/log.txt?x=14f21e3ab00000
kernel config: https://syzkaller.appspot.com/x/.config?x=7d5e878e3399b6cc
dashboard link: https://syzkaller.appspot.com/bug?extid=f1d2136db9c80d4733e8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1603533ab00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=175b5f3db00000

Reported-by: syzbot+f1d2136db9c80d4733e8@syzkaller.appspotmail.com
Fixes: c8607e4a086f ("KVM: x86: nVMX: don't fail nested VM entry on invalid guest state if !from_vmentry")

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

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