From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: xen-netfront crash when detaching network while
 some network activity
Date: Tue, 1 Dec 2015 17:00:42 -0500
Message-ID: <20151201220042.GC22107@char.us.oracle.com>
References: <20150522114932.GC8664@mail-itl> <55645140.1050209@citrix.com>
	<20150526220312.GA1358@mail-itl> <20151021185734.GD31646@mail-itl>
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Cc: Annie Li <annie.li@oracle.com>,
	Boris Ostrovsky <boris.ostrovsky@oracle.com>,
	netdev@vger.kernel.org, David Vrabel <david.vrabel@citrix.com>,
	xen-devel <xen-devel@lists.xen.org>
To: Marek =?iso-8859-1?Q?Marczykowski-G=F3recki?=
	<marmarek@invisiblethingslab.com>
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On Tue, Nov 17, 2015 at 03:45:15AM +0100, Marek Marczykowski-G=F3recki wrot=
e:
> On Wed, Oct 21, 2015 at 08:57:34PM +0200, Marek Marczykowski-G=F3recki wr=
ote:
> > On Wed, May 27, 2015 at 12:03:12AM +0200, Marek Marczykowski-G=F3recki =
wrote:
> > > On Tue, May 26, 2015 at 11:56:00AM +0100, David Vrabel wrote:
> > > > On 22/05/15 12:49, Marek Marczykowski-G=F3recki wrote:
> > > > > Hi all,
> > > > > =

> > > > > I'm experiencing xen-netfront crash when doing xl network-detach =
while
> > > > > some network activity is going on at the same time. It happens on=
ly when
> > > > > domU has more than one vcpu. Not sure if this matters, but the ba=
ckend
> > > > > is in another domU (not dom0). I'm using Xen 4.2.2. It happens on=
 kernel
> > > > > 3.9.4 and 4.1-rc1 as well.
> > > > > =

> > > > > Steps to reproduce:
> > > > > 1. Start the domU with some network interface
> > > > > 2. Call there 'ping -f some-IP'
> > > > > 3. Call 'xl network-detach NAME 0'

Do you see this all the time or just on occassions?

I tried to reproduce it and couldn't see it. Is your VM an PV or HVM?