[Qemu-devel] [Bug 1392504] Re: libvirt not relabeling devices on USB Passthrough

[nickmaelao]

Sorry, i posted the wrong output, i had modified the ownership of usb
the device /dev/bus/usb/001/010 to libvirt-qemu:kvm, but the problem
persists.

I configured libvirt to run as root, but the problem is the same, in
syslog im still receiving

Mar 29 22:54:42 ivan-desktop kernel: [174324.769452] xhci_hcd 0000:00:10.0: 
xHCI xhci_drop_endpoint called with disabled ep ffff88010a264600
Mar 29 22:54:42 ivan-desktop kernel: [174324.769470] xhci_hcd 0000:00:10.0: 
xHCI xhci_drop_endpoint called with disabled ep ffff88010a264648
Mar 29 22:54:42 ivan-desktop kernel: [174324.769479] xhci_hcd 0000:00:10.0: 
xHCI xhci_drop_endpoint called with disabled ep ffff88010a264690
Mar 29 22:54:42 ivan-desktop kernel: [174324.769489] xhci_hcd 0000:00:10.0: 
xHCI xhci_drop_endpoint called with disabled ep ffff88010a2646d8
Mar 29 22:54:42 ivan-desktop kernel: [174324.769497] xhci_hcd 0000:00:10.0: 
xHCI xhci_drop_endpoint called with disabled ep ffff88010a264720
Mar 29 22:54:42 ivan-desktop kernel: [174324.769506] xhci_hcd 0000:00:10.0: 
xHCI xhci_drop_endpoint called with disabled ep ffff88010a264768
Mar 29 22:54:42 ivan-desktop kernel: [174324.981362] usb 1-1: reset high-speed 
USB device number 10 using xhci_hcd

Heres the portion of the qemu xml of the guest:

<hostdev mode='subsystem' type='usb' managed='yes'>
      <source>
        <vendor id='0x0cf3'/>
        <product id='0x9271'/>
        <address bus='1' device='10'/>
      </source>
      <alias name='hostdev0'/>
 </hostdev>

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https://bugs.launchpad.net/bugs/1392504

Title:
  libvirt not relabeling devices on USB Passthrough

Status in QEMU:
  New
Status in libvirt package in Ubuntu:
  Triaged

Bug description:
  After upgrading from Ubuntu 14.04 to Ubuntu 14.10 USB passthrough in
  QEMU (version is now 2.1.0 - Debian2.1+dfsg-4ubuntu6.1) is not working
  any more. Already tried to remove and attach the USB devices. I use 1
  USB2 HDD  +  1 USB3 HDD to a virtual linux machine; 1 USB2 HDD to a
  virual FNAS machine and a USB 2camera to virtual Win7 machine. All
  these devices are not working any more.

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