On February 27, 2012 at 5:53 PM Erik Rull <erik.r...@rdsoftware.de> wrote: > Gerd Hoffmann wrote: > > Hi, > > > >> I'm really sorry, but I don't understand what's happening - I copied the > >> qemu executable on my target system before executing it, but gdb complains > >> that the core file does not match the executable! But except the file paths > >> they are identical. > > > >> warning: core file may not match specified executable file. > >> Core was generated by `/disc/qemu-system-x86_64 -machine kernel_irqchip=on > >> -serial /dev/ttyS2 -usb -de'. > >> Program terminated with signal 6, Aborted. > >> #0 0xffffe424 in __kernel_vsyscall () > > > > Strange. The backtrace is bogus too. > > > >> I don't know how to proceed here. > > > > Lets try plan b: add a printf right before the assert: > > > > --- a/hw/usb.c > > +++ b/hw/usb.c > > @@ -356,6 +356,7 @@ void usb_packet_complete(USBDevice *dev, USBPacket *p) > > > > while (!QTAILQ_EMPTY(&ep->queue)) { > > p = QTAILQ_FIRST(&ep->queue); > > + fprintf(stderr, "%s: packet %p\n", __func__, p); > > assert(p->state == USB_PACKET_QUEUED); > > ret = usb_process_one(p); > > if (ret == USB_RET_ASYNC) { > > > > > >> Don't you run into this problem (crash on USB plug in) on your system? > >> I tested it with a Linux guest, there it does not crash! Only with a > >> Windows XP guest! > > > > I test with Linux most of the time, but even with windows xp guest it > > doesn't reproduce here. > > > > cheers, > > Gerd > > > > That's a good idea - will test that tomorrow and send the new result file. > Have you ever tested a USB CD or DVD drive attached to your guests? I have > issues with Windows XP (I get everything running and detected beside the > drive letter in Windows Explorer) but it works fine for Linux. > > Best regards, > > Erik > Find attached the usb.txt => I gzip'ed it to reduce the transfer size. I added the p->state to the fprintf, maybe this helps. fprintf(stderr, "%s: packet: %p %d\n", __func__, p,p?p->state:-1); Best regards, Erik
usb.txt.gz
Description: GNU Zip compressed data