I am testing this QEMU build in two VM guests, one Mageia 7 and other openSUSE Leap. They reach the graphical session, play a sound using aplay and reboot automatically. The screen and audio from the host were captured to check if the sound would work even with the warning.
Once, the Mageia 7 guest had in the terminal: qemu-system-x86_64: warning: usb-audio: 0/192 And it continued operating normally, with no crash or freeze and sound played normally. One video showing its behavior can be seen on this link: https://cdn.discordapp.com/attachments/457747189616214019/521744887192879120/qemu-teste-audio002.webm The sound quality in the video is worse than normal because the Mageia guest sample rate is set to 44100 Hz while the usb-audio sample rate is 48000 Hz and because FFmpeg "magnifies" certain audio issues. The openSUSE guest has once shown the following: qxl_send_events: spice-server bug: guest stopped, ignoring [Thread 0x7fffcf7fe700 (LWP 12771) exited] [New Thread 0x7fffcf7fe700 (LWP 13036)] [Thread 0x7fffcf7fe700 (LWP 13036) exited] [New Thread 0x7fffcf7fe700 (LWP 13067)] [Thread 0x7fffcf7fe700 (LWP 13067) exited] [New Thread 0x7fffcf7fe700 (LWP 13098)] qemu-system-x86_64: warning: usb-audio: 0/192 qemu-system-x86_64: warning: usb-audio: 0/192 qemu-system-x86_64: warning: usb-audio: 0/192 qemu-system-x86_64: warning: usb-audio: 0/192 qemu-system-x86_64: warning: usb-audio: 0/192 qemu-system-x86_64: warning: usb-audio: 0/192 qemu-system-x86_64: warning: usb-audio: 0/192 qemu-system-x86_64: warning: usb-audio: 0/192 qemu-system-x86_64: warning: usb-audio: 0/192 qemu-system-x86_64: warning: usb-audio: 0/192 While it did not crash, its screen froze. By the QXL message, it seems the bug https://bugs.launchpad.net/qemu/+bug/1787070 is still present and causing failures on guests too, with openSUSE still being the biggest victim. Regarding this specific usb-audio crash problem, QEMU from sirius/usb-audio-crash seems to be fixed. Às 10:56 de 10/12/2018, kra...@redhat.com escreveu: > On Mon, Dec 10, 2018 at 12:11:09PM +0000, Leonardo Soares Müller wrote: >> Hi, I did not save that Mageia 7 data as I was unaware I could do this. >> The data below is from another crash with openSUSE Leap, this time I >> saved this backtrace with generate-core-file. > >> On #4 it shows: >> $2 = {pid = 225, id = 2027203168, ep = 0x555557e46520, stream = 0, iov = >> {iov = 0x7fffc418d190, niov = 0, nalloc = 1, size = 0}, parameter = 0, > ^^^^^^^^ >> short_not_ok = false, int_req = false, status = 0, actual_length = 0, >> state = USB_PACKET_SETUP, combined = 0x0, queue = {tqe_next = 0x0, >> tqe_prev = 0x0}, combined_entry = {tqe_next = 0x0, tqe_prev = 0x0}} > > Hmm, zero-length usb package. Should be 192 bytes ... > > Does anything change with > https://git.kraxel.org/cgit/qemu/log/?h=sirius/usb-audio-crash ? > > thanks, > Gerd >
