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

[Wuzongyong (Euler Dept)]

> > 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
No, I can't reproduce it in our own environment either.