[libvirt-users] usb post passthough stopped workng after kernel upgrade

[daggs]

anyone has any idea regarding this issue?

> Sent: Monday, November 05, 2018 at 7:55 PM
> From: daggs <daggs at gmx.com>
> To: libvirt-users at redhat.com
> Subject: [libvirt-users] usb post passthough stopped workng after kernel upgrade
>
> Greetings,
> 
> I have a vm on debian 9.5 to which I pass an specific usb from the host. here is the relevant part in the vm's xml file:
>     <hostdev mode='subsystem' type='usb' managed='yes'>
>       <source>
>         <vendor id='0x148f'/>
>         <product id='0x5572'/>
>       </source>
>       <address type='usb' bus='0' port='1'/>
>     </hostdev>
> the address line was added automatically by libvirt.
> everything was working well with kernel 4.15.11-1~bpo9+1 until I needed to upgrade the kernel to latest possible version due to usb issues
> I've upgraded to 4.18.6-1~bpo9+1. after the upgrade, my vm doesn't starts anymore, I see this msg:
> error: Failed to start domain router
> error: internal error: qemu unexpectedly closed the monitor: 2018-11-02T13:43:32.174730Z qemu-system-x86_64: -device usb-host,hostbus=1,hostaddr=4,id=hostdev4,bus=usb.0,port=1: failed to find host usb device 1:4
> 
> how can a kernel upgrade cause this? is there a fix for this issue?
> 
> Thanks,
> 
> Dagg.
> 
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