From: Paolo Bonzini <pbonzini@redhat.com>
To: Borislav Petkov <bp@alien8.de>, kvm@vger.kernel.org
Cc: lkml <linux-kernel@vger.kernel.org>, qemu-devel@nongnu.org
Subject: Re: freeze host when injecting NMIs in the guest, at least in 4.4-rc4+
Date: Thu, 10 Dec 2015 17:49:10 +0100 [thread overview]
Message-ID: <5669AD06.3030409@redhat.com> (raw)
In-Reply-To: <20151210164407.GA3593@nazgul.tnic>
On 10/12/2015 17:44, Borislav Petkov wrote:
> Yap,
>
> this is clearly a qemu/kvm issue. Lemme remove ext4 folks from CC. So
> here's what happens:
>
> I boot a kvm guest, connect to its monitor (qemu is started with
> "-monitor pty") and on the monitor I issue a couple of times the "nmi"
> command. It doesn't explode immediately but it happens pretty often and
> when it happens, the *host*(!) freezes with some nasty corruption, see
> below.
>
> Thoughts, suggestions, ideas?
Can you try it on Intel?
Paolo
WARNING: multiple messages have this Message-ID (diff)
From: Paolo Bonzini <pbonzini@redhat.com>
To: Borislav Petkov <bp@alien8.de>, kvm@vger.kernel.org
Cc: lkml <linux-kernel@vger.kernel.org>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] freeze host when injecting NMIs in the guest, at least in 4.4-rc4+
Date: Thu, 10 Dec 2015 17:49:10 +0100 [thread overview]
Message-ID: <5669AD06.3030409@redhat.com> (raw)
In-Reply-To: <20151210164407.GA3593@nazgul.tnic>
On 10/12/2015 17:44, Borislav Petkov wrote:
> Yap,
>
> this is clearly a qemu/kvm issue. Lemme remove ext4 folks from CC. So
> here's what happens:
>
> I boot a kvm guest, connect to its monitor (qemu is started with
> "-monitor pty") and on the monitor I issue a couple of times the "nmi"
> command. It doesn't explode immediately but it happens pretty often and
> when it happens, the *host*(!) freezes with some nasty corruption, see
> below.
>
> Thoughts, suggestions, ideas?
Can you try it on Intel?
Paolo
next prev parent reply other threads:[~2015-12-10 16:49 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-10 14:04 ext4/jbd splat in 4.4-rc4+ Borislav Petkov
2015-12-10 16:27 ` Borislav Petkov
2015-12-10 16:44 ` freeze host when injecting NMIs in the guest, at least " Borislav Petkov
2015-12-10 16:44 ` [Qemu-devel] " Borislav Petkov
2015-12-10 16:49 ` Paolo Bonzini [this message]
2015-12-10 16:49 ` Paolo Bonzini
2015-12-10 16:53 ` Borislav Petkov
2015-12-10 16:53 ` [Qemu-devel] " Borislav Petkov
2015-12-10 17:34 ` Paolo Bonzini
2015-12-10 17:34 ` [Qemu-devel] " Paolo Bonzini
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