[vfio-users] host crash when assign 4 nics to 4 vms separately

[Alex Williamson]

On Mon, 25 Jun 2018 09:56:39 +0000
"Wuzongyong (Euler Dept)" <cordius.wu at huawei.com> wrote:

> Hi,
> 
> Recently my colleague ran into a kernel crash problem when he tried to assign 4 nics to 4 vms separately.
> Unfortunately he didn't collect related logs and we only can see the dmesg log when core dump currently.
> 
> Here the info:
> 
> linux:~ # lspci | grep -i eth
> 02:00.0 Ethernet controller: Broadcom Limited NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
> 02:00.1 Ethernet controller: Broadcom Limited NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
> 02:00.2 Ethernet controller: Broadcom Limited NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
> 02:00.3 Ethernet controller: Broadcom Limited NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
> 81:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
> 81:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
> 82:00.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
> 82:00.1 Ethernet controller: Intel Corporation 82599ES 10-Gigabit SFI/SFP+ Network Connection (rev 01)
> 
> He used the last four nics.
> 
> Dmesg:
> 
> [ 3449.519354] general protection fault: 0000 [#1] SMP
> [ 3449.682056] CPU: 8 PID: 26794 Comm: qemu-kvm Tainted: G           OE  ---- -------   3.10.0-514.44.5.10_44.x86_64 #1

Are you able to reproduce this on an upstream kernel?  Thanks,

Alex