From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([2001:4830:134:3::10]:56654)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <peter.maydell@linaro.org>) id 1ezJuM-0000tp-H6
	for qemu-devel@nongnu.org; Fri, 23 Mar 2018 06:26:51 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <peter.maydell@linaro.org>) id 1ezJuL-0004Y2-Qq
	for qemu-devel@nongnu.org; Fri, 23 Mar 2018 06:26:50 -0400
Received: from mail-oi0-x229.google.com ([2607:f8b0:4003:c06::229]:47049)
	by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16)
	(Exim 4.71) (envelope-from <peter.maydell@linaro.org>)
	id 1ezJuL-0004Xp-L7
	for qemu-devel@nongnu.org; Fri, 23 Mar 2018 06:26:49 -0400
Received: by mail-oi0-x229.google.com with SMTP id e123-v6so7670820oih.13
	for <qemu-devel@nongnu.org>; Fri, 23 Mar 2018 03:26:49 -0700 (PDT)
MIME-Version: 1.0
In-Reply-To: <d29ae6aa-5758-277b-b754-4e6fe7666e6b@redhat.com>
References: <d29ae6aa-5758-277b-b754-4e6fe7666e6b@redhat.com>
From: Peter Maydell <peter.maydell@linaro.org>
Date: Fri, 23 Mar 2018 10:26:28 +0000
Message-ID: <CAFEAcA9dHPLj6aF=JsS8dXaDWf_ONQ_A+SD1xXQO7DdsWK3yAw@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Subject: Re: [Qemu-devel] Regression on KVM qemu-system-aarch64 since
 "monitor: enable IO thread for (qmp & !mux) typed"
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel/>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Auger Eric <eric.auger@redhat.com>
Cc: qemu list <qemu-devel@nongnu.org>, qemu-arm <qemu-arm@nongnu.org>, Peter Xu <peterx@redhat.com>, Eric Blake <eblake@redhat.com>

On 23 March 2018 at 10:24, Auger Eric <eric.auger@redhat.com> wrote:
> Hi,
>
> I observe a regression on KVM accelerated qemu-system-aarch64:
>
> Unexpected error in kvm_device_access() at
> /home/augere/UPSTREAM/qemu/accel/kvm/kvm-all.c:2164:
> 2018-03-23T09:59:59.629439Z qemu-system-aarch64: KVM_GET_DEVICE_ATTR
> failed: Group 6 attr 0x000000000000c664: Device or resource busy
> 2018-03-23 10:00:00.085+0000: shutting down, reason=crashed

Can you get a backtrace for this? (I guess you'd need to fiddle
with the kvm_device_access() code to make it assert rather
than passing back the error).

thanks
-- PMM