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Description of problem:
host kernel panics when assigning a usb audio device (logitech usb speaker) to a kvm guest.
Version-Release number of selected component (if applicable):
kernel-2.6.32-274.el6.x86_64
How reproducible:
100%
Steps to Reproduce:
1. Install guest (/me used rhel6, but probably doesn't matter).
2. Boot guest.
3. Start pulseaudio volume control on the host machine.
4. Assign usb speaker to the guest (virt-manager -> add hardware -> usb host device).
Actual results:
host kernel panics
Expected results:
host continues to run fine
Additional info:
With pulseaudio volume control not started it works just fine.
Most likely triggered by qemu sending usbfs ioctls (USBDEVFS_DISCONNECT or USBDEVFS_RESET) to the usb speakers while they are in use by pulse.