From: Marek Vavruša <marek.vavrusa@nic.cz>
Date: Sat, 9 May 2015 19:44:16 +0000 (+0200)
Subject: daemon/io: check for bad udp reads
X-Git-Tag: v1.0.0-beta1~191
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d1575c645e5717bc35ff6c981a724444eaa8f3fe;p=thirdparty%2Fknot-resolver.git

daemon/io: check for bad udp reads
---

diff --git a/daemon/io.c b/daemon/io.c
index a62bea699..3a6071b55 100644
--- a/daemon/io.c
+++ b/daemon/io.c
@@ -53,6 +53,11 @@ void udp_recv(uv_udp_t *handle, ssize_t nread, const uv_buf_t *buf,
 {
 	uv_loop_t *loop = handle->loop;
 	struct worker_ctx *worker = loop->data;
+	if (nread <= 0) {
+		worker_exec(worker, (uv_handle_t *)handle, NULL, addr);
+		return;
+	}
+
 	knot_pkt_t *query = knot_pkt_new(buf->base, nread, worker->mm);
 	query->max_size = sizeof(worker->bufs.wire);
 	worker_exec(worker, (uv_handle_t *)handle, query, addr);