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Description of problem: USB controller nec-xhci has a configurable option ports, libvirt should limit the range of it. Version-Release number of selected component (if applicable): libvirt-2.0.0-8.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1. define and configure a guest like following, configuring the ports valued 16 and plugging a redirect USB to the port. # virsh dumpxml vm3 | grep usb -A 4 <controller type='usb' index='0' model='nec-xhci' ports='16'> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </controller> <controller type='pci' index='0' model='pci-root'/> <channel type='spicevmc'> -- <redirdev bus='usb' type='spicevmc'> <address type='usb' bus='0' port='16'/> </redirdev> 2. start guest, guest fails to start. # virsh start vm3 error: Failed to start domain vm3 error: internal error: qemu unexpectedly closed the monitor: us=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -drive file=/tmp/zp/beaker/vm2.qcow2,format=qcow2,if=none,id=drive-virtio-disk0,serial=eca38821-c430-48a1-a932-a4814198f24d,cache=none,werror=stop,rerror=stop,aio=threads -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=3,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -spice port=5901,addr=0.0.0.0,disable-ticketing,seamless-migration=on -device qxl-vga,id=video0,ram_size=67108864,vram_size=33554432,vram64_size_mb=0,vgamem_mb=16,bus=pci.0,addr=0x2 -chardev spicevmc,id=charredir0,name=usbredir -device usb-redir,chardev=charredir0,id=redir0,bus=usb.0,port=16 -msg timestamp=on 2016-09-13T03:56:34.673060Z qemu-kvm: -device usb-redir,chardev=charredir0,id=redir0,bus=usb.0,port=16: usb port 16 (bus usb.0) not found (in use?) Actual results: As above, guest with nec-usb-xhci having ports valued 16 will fail to start. Expected results: Libvirt should give an error to limit the value of ports. Additional info:
Upstream patch: https://www.redhat.com/archives/libvir-list/2017-January/msg01174.html
Pushed as: commit 723fef99c0e29d1a327aaea4cef477609f6ccbc2 Author: Ján Tomko <jtomko> CommitDate: 2017-02-13 16:34:09 +0100 qemu: enforce maximum ports value for nec-xhci This controller only allows up to 15 ports. https://bugzilla.redhat.com/show_bug.cgi?id=1375417 git describe: v3.0.0-183-g723fef9
Version-Release number of selected component (if applicable): libvirt-3.2.0-4.el7.x86_64 qemu-kvm-rhev-2.9.0-3.el7.x86_64 kernel-3.10.0-663.el7.x86_64 step to verify: 1.edit the vm's dumpxml file as follows: # virsh edit vm <controller type='usb' index='0' model='nec-xhci' ports='16'> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </controller> <controller type='pci' index='0' model='pci-root'/> <channel type='spicevmc'> ... <redirdev bus='usb' type='spicevmc'> <address type='usb' bus='0' port='16'/> </redirdev> 2.try to save the dumpxml file in the step 1 # virsh edit vm Failed. Try again? [y,n,i,f,?]: error: unsupported configuration: 'nec-xhci' controller only supports up to '15' ports 3.And verify other value of ports in controller while "<controller type='usb' index='0' model='nec-xhci' ports='0'>" # virsh edit cow error: XML error: Missing USB bus 0 while "<controller type='usb' index='0' model='nec-xhci' ports='1'>" # virsh edit cow error: XML error: requested USB port 2 not present on USB bus 0 while "<controller type='usb' index='0' model='nec-xhci' ports='15'>" # virsh edit cow Domain cow XML configuration edited. # virsh start cow Domain cow started
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2017:1846