Re: [Xen-devel] Dom0 crash with apache bench (ab)

[Christoffer Dall <christofferdall@xxxxxxxxx>]

On Fri, Jul 31, 2015 at 12:28 PM, David Vrabel <david.vrabel@xxxxxxxxxx> 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] <IRQ>
> [ 253.619332] [<ffffffff815d7c25>] ? skb_copy_ubufs+0xa5/0x230
> [ 253.619347] [<ffffffff815e8525>] __netif_receive_skb_core+0x6f5/0x940
> [ 253.619353] [<ffffffff815e8788>] __netif_receive_skb+0x18/0x60
> [ 253.619360] [<ffffffff815e87f8>] netif_receive_skb_internal+0x28/0x90
> [ 253.619366] [<ffffffff815e91f5>] napi_gro_frags+0x125/0x1a0
> [ 253.619378] [<ffffffffa01b1173>] mlx4_en_process_rx_cq+0x753/0xb50 [mlx4_en]
> [ 253.619387] [<ffffffffa01b1657>] 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

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