From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoffer Dall Subject: Re: Dom0 crash with apache bench (ab) Date: Fri, 31 Jul 2015 15:17:56 +0200 Message-ID: References: <20150728145022.GE26623@x230.dumpdata.com> <1438095319.11600.165.camel@citrix.com> <55BB4DBA.2040909@citrix.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============7600058446644444964==" Return-path: In-Reply-To: <55BB4DBA.2040909@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: David Vrabel Cc: xen-devel@lists.xen.org, Wei Liu , Ian Campbell , Stefano Stabellini List-Id: xen-devel@lists.xenproject.org --===============7600058446644444964== Content-Type: multipart/alternative; boundary=001a1134f258f33362051c2ba536 --001a1134f258f33362051c2ba536 Content-Type: text/plain; charset=UTF-8 On Fri, Jul 31, 2015 at 12:28 PM, David Vrabel wrote: > On 31/07/15 11:24, Stefano Stabellini wrote: > > This is a Linux Dom0 crash on x86 (Dell PowerEdge R320, Xeon E5-2450), > > CC'ing relevant people. As you can see from the links below the crash > > is: > > > > [ 253.619326] Call Trace: > > [ 253.619330] > > [ 253.619332] [] ? skb_copy_ubufs+0xa5/0x230 > > [ 253.619347] [] __netif_receive_skb_core+0x6f5/0x940 > > [ 253.619353] [] __netif_receive_skb+0x18/0x60 > > [ 253.619360] [] netif_receive_skb_internal+0x28/0x90 > > [ 253.619366] [] napi_gro_frags+0x125/0x1a0 > > [ 253.619378] [] mlx4_en_process_rx_cq+0x753/0xb50 > [mlx4_en] > > [ 253.619387] [] mlx4_en_poll_rx_cq+0x97/0x160 > [mlx4_en] > > What makes you think this is Xen specific? I suggest raising this the > the mlx4 maintainers. > > Linux native and KVM guests (same hw, same kernel version+config) run just fine under the same workload. Thanks, -Christoffer --001a1134f258f33362051c2ba536 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable


On Fri, Jul 31, 2015 at 12:28 PM, David Vrabel <david.vrabel@cit= rix.com> wrote:
On 31/07/15 11:24, Stefano Stabellini wrote:
> This is a Linux Dom0 crash on x86 (Dell PowerEdge R320, Xeon E5-2450),=
> CC'ing relevant people. As you can see from the links below the cr= ash
> is:
>
> [ 253.619326] Call Trace:
> [ 253.619330] <IRQ>
> [ 253.619332] [<ffffffff815d7c25>] ? skb_copy_ubufs+0xa5/0x230 > [ 253.619347] [<ffffffff815e8525>] __netif_receive_skb_core+0x6f= 5/0x940
> [ 253.619353] [<ffffffff815e8788>] __netif_receive_skb+0x18/0x60=
> [ 253.619360] [<ffffffff815e87f8>] netif_receive_skb_internal+0x= 28/0x90
> [ 253.619366] [<ffffffff815e91f5>] napi_gro_frags+0x125/0x1a0 > [ 253.619378] [<ffffffffa01b1173>] mlx4_en_process_rx_cq+0x753/0= xb50 [mlx4_en]
> [ 253.619387] [<ffffffffa01b1657>] mlx4_en_poll_rx_cq+0x97/0x160= [mlx4_en]

What makes you think this is Xen specific?=C2=A0 I suggest raising t= his the
the mlx4 maintainers.


Linux native and KVM guests (same hw, same kernel ve= rsion+config) run just fine under the same workload.

Thanks,
-Christoffer
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