usb packets with no payload (zero length) seem to happen in practice for whatever reason. Add a check and skip the packet then, otherwise we'll trigger an assert.
Reported-by: Leonardo Soares Müller <leozinho29...@hotmail.com> Signed-off-by: Gerd Hoffmann <kra...@redhat.com> --- hw/usb/dev-audio.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/hw/usb/dev-audio.c b/hw/usb/dev-audio.c index ee43e4914d..28ac7c5165 100644 --- a/hw/usb/dev-audio.c +++ b/hw/usb/dev-audio.c @@ -321,6 +321,9 @@ static int streambuf_put(struct streambuf *buf, USBPacket *p) if (!free) { return 0; } + if (p->iov.size != USBAUDIO_PACKET_SIZE) { + return 0; + } assert(free >= USBAUDIO_PACKET_SIZE); usb_packet_copy(p, buf->data + (buf->prod % buf->size), USBAUDIO_PACKET_SIZE); -- 2.9.3