From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45802) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gByXO-0004eG-Lo for qemu-devel@nongnu.org; Mon, 15 Oct 2018 04:47:43 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gByXM-0004cK-Kb for qemu-devel@nongnu.org; Mon, 15 Oct 2018 04:47:41 -0400 From: Jason Wang Date: Mon, 15 Oct 2018 16:46:24 +0800 Message-Id: <1539593186-32183-25-git-send-email-jasowang@redhat.com> In-Reply-To: <1539593186-32183-1-git-send-email-jasowang@redhat.com> References: <1539593186-32183-1-git-send-email-jasowang@redhat.com> Subject: [Qemu-devel] [PULL 24/26] net: ignore packet size greater than INT_MAX List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: peter.maydell@linaro.org, qemu-devel@nongnu.org Cc: Jason Wang , qemu-stable@nongnu.org There should not be a reason for passing a packet size greater than INT_MAX. It's usually a hint of bug somewhere, so ignore packet size greater than INT_MAX in qemu_deliver_packet_iov() CC: qemu-stable@nongnu.org Reported-by: Daniel Shapira Reviewed-by: Michael S. Tsirkin Signed-off-by: Jason Wang --- net/net.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/net/net.c b/net/net.c index c66847e..07c194a 100644 --- a/net/net.c +++ b/net/net.c @@ -712,10 +712,15 @@ ssize_t qemu_deliver_packet_iov(NetClientState *sender, void *opaque) { NetClientState *nc = opaque; + size_t size = iov_size(iov, iovcnt); int ret; + if (size > INT_MAX) { + return size; + } + if (nc->link_down) { - return iov_size(iov, iovcnt); + return size; } if (nc->receive_disabled) { -- 2.5.0