Re: [BUG] KVM USB passthrough did not claim interface before use

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On Wed, Oct 12, 2022 at 5:14 PM Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
>
> On Tue, Oct 11, 2022 at 02:49:09PM -0400, Peter Geis wrote:
> > On Mon, Oct 10, 2022 at 11:01 AM Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
>
> > > > The bug is the device is unusable in passthrough, this is the only
> > > > direction as to why. The question is which piece of software is
> > > > causing it. I figure qemu is the most likely suspect, but they request
> > > > bugs that are possibly in kvm start here. The cdc-acm driver is the
> > > > least likely in my mind, as the other device that works also uses it.
> > > > I just tested removing the other working device and only passing
> > > > through the suspect device, and it still triggers the bug. So whatever
> > > > the problem is, it's specific to this one device.
> > >
> > > Does anything of interest about the device show up in the virtual
> > > machine's kernel log?
> >
> > Nothing in regards to this no. The device enumerates, but any attempt
> > to access it triggers the warning on the host only.
>
> That's odd.  I don't see anything in the usbmon trace corresponding to
> the warning messages about interface 1.  In fact, I don't see anything
> at all in the trace relating to interface 1.
>
> > > You can collect a usbmon trace on the host system to gather more
> > > information about what the virtual machine is trying to do.  Your
> > > previous post shows that the device is on bus 3, so before starting
> > > qemu-kvm you would do:
> > >
> > >         cat /sys/kernel/debug/usb/usbmon/3u >mon.txt
> > >
> > > in a separate window.  Kill the cat process when the test is over and
> > > post the output file.
> > >
> > > It'll help if you unplug the working device (and in fact as many devices
> > > on bus 3 as is practical) before running the test, so that the trace
> > > includes only traffic to the non-working device.
> > >
> > > For comparison, you could also acquire a usbmon trace of what happens
> > > when you try using the device on a real, non-virtual machine.  For this
> > > test you would start the trace before plugging in the device.
> >
> > I've attached the requested file, but I have no idea how to read this.
> > The file consists of the host when the device is plugged in until
> > enumeration, left to idle for a few moments, then the guest is started
> > and permitted to claim it.
>
> Actually the device was plugged in and enumerated, and then about four
> seconds later it spontaneously disconnected for a moment.  It was
> enumerated again, and about three minutes after that it looks like the
> virtual guest started up.  The guest reset the device and enumerated it,
> but did nothing more.  In particular, the guest did not try to install
> configuration 1, which is odd.  Or if it did try this, the attempt
> wasn't visible in the usbmon trace.
>
> I'm inclined to agree that the fault appears to lie in qemu-kvm.
>
> >  No other device is on the bus.
>
> In fact one other device was.  It identified itself with the strings
> "PbAcid" and "CPS", but I can't tell more than that.  A UPS device,
> perhaps?
>
> There's one other thing you might try, although I'm not sure that it
> will provide any useful new information.  Instead of collecting a
> usbmon trace, collect a usbfs snoop log.  Before starting qemu, do:
>
>         echo 1 >/sys/module/usbcore/parameters/usbfs_snoop
>
> This will cause the accesses performed via usbfs, including those
> performed by the qemu process, to be printed in the kernel log.  (Not
> all of the accesses, but the more important ones.)  Let's see what shows
> up.

So I built and tested the newest version of QEMU, and it exhibits the
same issue. I've also captured the log as requested and attached it
here.

>
> Alan Stern

Thanks again,
Peter
[93190.876501] audit: type=1400 audit(1665880374.009:148): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="libvirt-4c5855dd-2d61-452f-8f9f-5cc79681a8be" pid=149602 comm="apparmor_parser"
[93190.933026] usb 3-6.2: opened by process 149607: rpc-libvirtd
[93191.006429] usb 3-6.2: opened by process 149605: qemu-system-x86
[93191.006461] usb 3-6.2: usbdev_do_ioctl: CONTROL
[93191.006465] usb 3-6.2: control urb: bRequestType=80 bRequest=08 wValue=0000 wIndex=0000 wLength=0001
[93191.006468] usb 3-6.2: ep0 ctrl-in, length 1, timeout 1000
[93191.006589] usb 3-6.2: ep0 ctrl-in, actual_length 1, status 0
[93191.006592] data: 00                                                                                               .
[93191.006615] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93191.006616] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0300 wIndex=0000 wLength=0004
[93191.006619] usb 3-6.2: userurb 000056069bc27040, ep0 ctrl-in, length 4
[93191.006716] usb 3-6.2: urb complete
[93191.006718] usb 3-6.2: userurb 000056069bc27040, ep0 ctrl-in, actual_length 4 status 0
[93191.006721] data: 04 03 09 04                                                                                      ....
[93191.006729] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93191.006731] usb 3-6.2: reap 000056069bc27040
[93191.006734] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93191.006737] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93191.006738] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0302 wIndex=0409 wLength=00ff
[93191.006740] usb 3-6.2: userurb 000056069bc27040, ep0 ctrl-in, length 255
[93191.006861] usb 3-6.2: urb complete
[93191.006863] usb 3-6.2: userurb 000056069bc27040, ep0 ctrl-in, actual_length 20 status 0
[93191.006865] data: 14 03 43 00 6f 00 6e 00 42 00 65 00 65 00 20 00 49 00 49 00                                      ..C.o.n.B.e.e. .I.I.
[93191.006872] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93191.006874] usb 3-6.2: reap 000056069bc27040
[93191.006877] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93193.797055] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93193.797060] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0100 wIndex=0000 wLength=0008
[93193.797064] usb 3-6.2: userurb 00007fdd5466ea50, ep0 ctrl-in, length 8
[93193.797201] usb 3-6.2: urb complete
[93193.797203] usb 3-6.2: userurb 00007fdd5466ea50, ep0 ctrl-in, actual_length 8 status 0
[93193.797206] data: 12 01 01 02 02 00 00 40                                                                          .......@
[93193.797248] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93193.797250] usb 3-6.2: reap 00007fdd5466ea50
[93193.797259] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93193.797378] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93193.797380] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0100 wIndex=0000 wLength=0012
[93193.797384] usb 3-6.2: userurb 00007fdd55195060, ep0 ctrl-in, length 18
[93193.797561] usb 3-6.2: urb complete
[93193.797563] usb 3-6.2: userurb 00007fdd55195060, ep0 ctrl-in, actual_length 18 status 0
[93193.797565] data: 12 01 01 02 02 00 00 40 f1 1c 30 00 00 01 01 02 03 01                                            .......@..0.......
[93193.797597] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93193.797599] usb 3-6.2: reap 00007fdd55195060
[93193.797607] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93193.797674] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93193.797676] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0200 wIndex=0000 wLength=0008
[93193.797678] usb 3-6.2: userurb 00007fdd551041c0, ep0 ctrl-in, length 8
[93193.797812] usb 3-6.2: urb complete
[93193.797814] usb 3-6.2: userurb 00007fdd551041c0, ep0 ctrl-in, actual_length 8 status 0
[93193.797817] data: 09 02 43 00 02 01 00 80                                                                          ..C.....
[93193.797830] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93193.797832] usb 3-6.2: reap 00007fdd551041c0
[93193.797847] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93193.797894] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93193.797896] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0200 wIndex=0000 wLength=0043
[93193.797898] usb 3-6.2: userurb 00007fdd5466ea50, ep0 ctrl-in, length 67
[93193.798107] usb 3-6.2: urb complete
[93193.798109] usb 3-6.2: userurb 00007fdd5466ea50, ep0 ctrl-in, actual_length 67 status 0
[93193.798112] data: 09 02 43 00 02 01 00 80 32 09 04 00 00 01 02 02 01 00 05 24 00 10 01 04 24 02 02 05 24 06 00 01  ..C.....2..........$....$...$...
[93193.798113] data: 05 24 01 03 01 07 05 83 03 40 00 10 09 04 01 00 02 0a 00 00 00 07 05 81 02 40 00 00 07 05 02 02  .$.......@...............@......
[93193.798114] data: 40 00 00                                                                                         @..
[93193.798127] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93193.798129] usb 3-6.2: reap 00007fdd5466ea50
[93193.798143] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93193.798197] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93193.798199] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0300 wIndex=0000 wLength=0002
[93193.798201] usb 3-6.2: userurb 00007fdd55195060, ep0 ctrl-in, length 2
[93193.798335] usb 3-6.2: urb complete
[93193.798337] usb 3-6.2: userurb 00007fdd55195060, ep0 ctrl-in, actual_length 2 status 0
[93193.798339] data: 04 03                                                                                            ..
[93193.798352] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93193.798354] usb 3-6.2: reap 00007fdd55195060
[93193.798368] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93193.798412] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93193.798414] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0300 wIndex=0000 wLength=0004
[93193.798415] usb 3-6.2: userurb 00007fdd551041c0, ep0 ctrl-in, length 4
[93193.798589] usb 3-6.2: urb complete
[93193.798591] usb 3-6.2: userurb 00007fdd551041c0, ep0 ctrl-in, actual_length 4 status 0
[93193.798593] data: 04 03 09 04                                                                                      ....
[93193.798606] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93193.798608] usb 3-6.2: reap 00007fdd551041c0
[93193.798622] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93195.712484] usb 3-6.2: usbdev_do_ioctl: RESET
[93195.892482] usb 3-6.2: reset full-speed USB device number 70 using xhci_hcd
[93196.095050] cdc_acm 3-6.2:1.0: ttyACM0: USB ACM device
[93196.217040] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93196.217047] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0100 wIndex=0000 wLength=0040
[93196.217052] usb 3-6.2: userurb 00007fdd54b175d0, ep0 ctrl-in, length 64
[93196.217189] usb 3-6.2: urb complete
[93196.217191] usb 3-6.2: userurb 00007fdd54b175d0, ep0 ctrl-in, actual_length 18 status 0
[93196.217194] data: 12 01 01 02 02 00 00 40 f1 1c 30 00 00 01 01 02 03 01                                            .......@..0.......
[93196.217205] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.217207] usb 3-6.2: reap 00007fdd54b175d0
[93196.217222] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.346763] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93196.346779] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0100 wIndex=0000 wLength=0012
[93196.346785] usb 3-6.2: userurb 00007fdd54b175d0, ep0 ctrl-in, length 18
[93196.346925] usb 3-6.2: urb complete
[93196.346928] usb 3-6.2: userurb 00007fdd54b175d0, ep0 ctrl-in, actual_length 18 status 0
[93196.346933] data: 12 01 01 02 02 00 00 40 f1 1c 30 00 00 01 01 02 03 01                                            .......@..0.......
[93196.346947] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.346949] usb 3-6.2: reap 00007fdd54b175d0
[93196.346968] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.347035] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93196.347039] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0f00 wIndex=0000 wLength=0005
[93196.347042] usb 3-6.2: userurb 00007fdd5518f860, ep0 ctrl-in, length 5
[93196.347154] usb 3-6.2: urb complete
[93196.347156] usb 3-6.2: userurb 00007fdd5518f860, ep0 ctrl-in, actual_length 5 status 0
[93196.347159] data: 05 0f 0c 00 01                                                                                   .....
[93196.347167] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.347168] usb 3-6.2: reap 00007fdd5518f860
[93196.347174] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.347237] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93196.347240] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0f00 wIndex=0000 wLength=000c
[93196.347244] usb 3-6.2: userurb 00007fdd5416e2f0, ep0 ctrl-in, length 12
[93196.347359] usb 3-6.2: urb complete
[93196.347362] usb 3-6.2: userurb 00007fdd5416e2f0, ep0 ctrl-in, actual_length 12 status 0
[93196.347364] data: 05 0f 0c 00 01 07 10 02 02 00 00 00                                                              ............
[93196.347377] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.347378] usb 3-6.2: reap 00007fdd5416e2f0
[93196.347385] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.347449] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93196.347453] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0600 wIndex=0000 wLength=000a
[93196.347457] usb 3-6.2: userurb 00007fdd54b175d0, ep0 ctrl-in, length 10
[93196.347648] usb 3-6.2: urb complete
[93196.347650] usb 3-6.2: userurb 00007fdd54b175d0, ep0 ctrl-in, actual_length 0 status -32
[93196.347660] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.347661] usb 3-6.2: reap 00007fdd54b175d0
[93196.347666] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.347758] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93196.347762] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0600 wIndex=0000 wLength=000a
[93196.347767] usb 3-6.2: userurb 00007fdd5518f860, ep0 ctrl-in, length 10
[93196.347936] usb 3-6.2: urb complete
[93196.347938] usb 3-6.2: userurb 00007fdd5518f860, ep0 ctrl-in, actual_length 0 status -32
[93196.347946] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.347947] usb 3-6.2: reap 00007fdd5518f860
[93196.347952] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.348486] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93196.348490] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0600 wIndex=0000 wLength=000a
[93196.348494] usb 3-6.2: userurb 00007fdd5416e2f0, ep0 ctrl-in, length 10
[93196.348666] usb 3-6.2: urb complete
[93196.348668] usb 3-6.2: userurb 00007fdd5416e2f0, ep0 ctrl-in, actual_length 0 status -32
[93196.348703] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.348705] usb 3-6.2: reap 00007fdd5416e2f0
[93196.348715] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.350952] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93196.350960] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0200 wIndex=0000 wLength=0009
[93196.350964] usb 3-6.2: userurb 00007fdd54b175d0, ep0 ctrl-in, length 9
[93196.351129] usb 3-6.2: urb complete
[93196.351133] usb 3-6.2: userurb 00007fdd54b175d0, ep0 ctrl-in, actual_length 9 status 0
[93196.351137] data: 09 02 43 00 02 01 00 80 32                                                                       ..C.....2
[93196.351164] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.351167] usb 3-6.2: reap 00007fdd54b175d0
[93196.351189] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.351315] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93196.351318] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0200 wIndex=0000 wLength=0043
[93196.351322] usb 3-6.2: userurb 00007fdd5518f860, ep0 ctrl-in, length 67
[93196.351537] usb 3-6.2: urb complete
[93196.351540] usb 3-6.2: userurb 00007fdd5518f860, ep0 ctrl-in, actual_length 67 status 0
[93196.351543] data: 09 02 43 00 02 01 00 80 32 09 04 00 00 01 02 02 01 00 05 24 00 10 01 04 24 02 02 05 24 06 00 01  ..C.....2..........$....$...$...
[93196.351545] data: 05 24 01 03 01 07 05 83 03 40 00 10 09 04 01 00 02 0a 00 00 00 07 05 81 02 40 00 00 07 05 02 02  .$.......@...............@......
[93196.351547] data: 40 00 00                                                                                         @..
[93196.351562] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.351564] usb 3-6.2: reap 00007fdd5518f860
[93196.351573] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.351666] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93196.351668] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0300 wIndex=0000 wLength=00ff
[93196.351672] usb 3-6.2: userurb 00007fdd5416e2f0, ep0 ctrl-in, length 255
[93196.351788] usb 3-6.2: urb complete
[93196.351791] usb 3-6.2: userurb 00007fdd5416e2f0, ep0 ctrl-in, actual_length 4 status 0
[93196.351794] data: 04 03 09 04                                                                                      ....
[93196.351809] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.351811] usb 3-6.2: reap 00007fdd5416e2f0
[93196.351821] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.351896] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93196.351899] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0302 wIndex=0409 wLength=00ff
[93196.351902] usb 3-6.2: userurb 00007fdd54b175d0, ep0 ctrl-in, length 255
[93196.352017] usb 3-6.2: urb complete
[93196.352019] usb 3-6.2: userurb 00007fdd54b175d0, ep0 ctrl-in, actual_length 20 status 0
[93196.352022] data: 14 03 43 00 6f 00 6e 00 42 00 65 00 65 00 20 00 49 00 49 00                                      ..C.o.n.B.e.e. .I.I.
[93196.352447] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.352449] usb 3-6.2: reap 00007fdd54b175d0
[93196.352459] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.352568] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93196.352571] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0301 wIndex=0409 wLength=00ff
[93196.352574] usb 3-6.2: userurb 00007fdd5518f860, ep0 ctrl-in, length 255
[93196.352802] usb 3-6.2: urb complete
[93196.352805] usb 3-6.2: userurb 00007fdd5518f860, ep0 ctrl-in, actual_length 82 status 0
[93196.352809] data: 52 03 64 00 72 00 65 00 73 00 64 00 65 00 6e 00 20 00 65 00 6c 00 65 00 6b 00 74 00 72 00 6f 00  R.d.r.e.s.d.e.n. .e.l.e.k.t.r.o.
[93196.352811] data: 6e 00 69 00 6b 00 20 00 69 00 6e 00 67 00 65 00 6e 00 69 00 65 00 75 00 72 00 74 00 65 00 63 00  n.i.k. .i.n.g.e.n.i.e.u.r.t.e.c.
[93196.352812] data: 68 00 6e 00 69 00 6b 00 20 00 47 00 6d 00 62 00 48 00                                            h.n.i.k. .G.m.b.H.
[93196.352826] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.352830] usb 3-6.2: reap 00007fdd5518f860
[93196.352842] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.352933] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93196.352936] usb 3-6.2: control urb: bRequestType=80 bRequest=06 wValue=0303 wIndex=0409 wLength=00ff
[93196.352940] usb 3-6.2: userurb 00007fdd5416e2f0, ep0 ctrl-in, length 255
[93196.353097] usb 3-6.2: urb complete
[93196.353100] usb 3-6.2: userurb 00007fdd5416e2f0, ep0 ctrl-in, actual_length 20 status 0
[93196.353104] data: 14 03 44 00 45 00 32 00 35 00 39 00 37 00 30 00 38 00 39 00                                      ..D.E.2.5.9.7.0.8.9.
[93196.353121] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.353124] usb 3-6.2: reap 00007fdd5416e2f0
[93196.353133] usb 3-6.2: usbdev_do_ioctl: REAPURBNDELAY
[93196.482584] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93196.482589] usb 3-6.2: usbfs: process 149617 (CPU 3/KVM) did not claim interface 0 before use
[93209.729484] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93209.729489] usb 3-6.2: usbfs: process 149616 (CPU 2/KVM) did not claim interface 0 before use
[93209.729574] usb 3-6.2: usbdev_do_ioctl: CLEAR_HALT
[93209.729577] usb 3-6.2: usbfs: process 149617 (CPU 3/KVM) did not claim interface 1 before use
[93209.729632] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93209.729635] usb 3-6.2: usbfs: process 149614 (CPU 0/KVM) did not claim interface 0 before use
[93214.465557] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93214.465563] usb 3-6.2: usbfs: process 149614 (CPU 0/KVM) did not claim interface 0 before use
[93214.496648] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93214.496653] usb 3-6.2: usbfs: process 149615 (CPU 1/KVM) did not claim interface 0 before use
[93214.496757] usb 3-6.2: usbdev_do_ioctl: CLEAR_HALT
[93214.496760] usb 3-6.2: usbfs: process 149617 (CPU 3/KVM) did not claim interface 1 before use
[93219.049148] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93219.049155] usb 3-6.2: usbfs: process 149617 (CPU 3/KVM) did not claim interface 0 before use
[93219.056258] usb 3-6.2: usbdev_do_ioctl: CLEAR_HALT
[93219.056264] usb 3-6.2: usbfs: process 149617 (CPU 3/KVM) did not claim interface 1 before use
[93220.059210] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93220.059215] usb 3-6.2: usbfs: process 149615 (CPU 1/KVM) did not claim interface 0 before use
[93220.059401] usb 3-6.2: usbdev_do_ioctl: CLEAR_HALT
[93220.059404] usb 3-6.2: usbfs: process 149617 (CPU 3/KVM) did not claim interface 1 before use
[93224.608726] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93224.608731] usb 3-6.2: usbfs: process 149617 (CPU 3/KVM) did not claim interface 0 before use
[93224.615221] usb 3-6.2: usbdev_do_ioctl: SUBMITURB
[93224.615226] usb 3-6.2: usbfs: process 149616 (CPU 2/KVM) did not claim interface 0 before use
[93224.615339] usb 3-6.2: usbdev_do_ioctl: CLEAR_HALT
[93224.615342] usb 3-6.2: usbfs: process 149617 (CPU 3/KVM) did not claim interface 1 before use

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