From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57245) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gWcRX-0000aK-Oq for qemu-devel@nongnu.org; Tue, 11 Dec 2018 02:27:00 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gWcRS-0007Tp-SC for qemu-devel@nongnu.org; Tue, 11 Dec 2018 02:26:59 -0500 Received: from mx1.redhat.com ([209.132.183.28]:44044) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gWcRS-0007Sq-LY for qemu-devel@nongnu.org; Tue, 11 Dec 2018 02:26:54 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C155A308FBA0 for ; Tue, 11 Dec 2018 07:26:52 +0000 (UTC) From: Gerd Hoffmann Date: Tue, 11 Dec 2018 08:26:49 +0100 Message-Id: <20181211072649.20700-1-kraxel@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PATCH] usb-audio: ignore usb packages with wrong size List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Gerd Hoffmann 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 M=C3=BCller Signed-off-by: Gerd Hoffmann --- 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, USBPa= cket *p) if (!free) { return 0; } + if (p->iov.size !=3D USBAUDIO_PACKET_SIZE) { + return 0; + } assert(free >=3D USBAUDIO_PACKET_SIZE); usb_packet_copy(p, buf->data + (buf->prod % buf->size), USBAUDIO_PACKET_SIZE); --=20 2.9.3