From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoffer Dall Subject: Re: Dom0 crash with apache bench (ab) Date: Mon, 14 Sep 2015 14:40:08 +0200 Message-ID: <20150914124008.GA17195@cbox> References: <20150728145022.GE26623@x230.dumpdata.com> <1438095319.11600.165.camel@citrix.com> <55BB4DBA.2040909@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Christoffer Dall Cc: Ian Campbell , xen-devel@lists.xen.org, Wei Liu , David Vrabel , Stefano Stabellini List-Id: xen-devel@lists.xenproject.org On Fri, Jul 31, 2015 at 03:17:56PM +0200, Christoffer Dall wrote: > 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. > Ping? >>From the fact that bare-metal and KVM works fine with this hardware I still think it's reasonable to assume that it's a Xen issue and not a mlx4 issue. Is this completely flawed? Thanks, -Christoffer