xnu-4570.31.3.tar.gz

[apple/xnu.git] / bsd / netinet / ip_icmp.c

diff --git a/bsd/netinet/ip_icmp.c b/bsd/netinet/ip_icmp.c
index 3d7ecafe3516d30b575e4d22bd966e7965a03fd4..ab1b0452e1efbdf8d588da1e6cb294589674576d 100644 (file)
--- a/bsd/netinet/ip_icmp.c
+++ b/bsd/netinet/ip_icmp.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2016 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2017 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -538,9 +538,17 @@ icmp_input(struct mbuf *m, int hlen)
                 * notification to TCP layer.
                 */
                ctlfunc = ip_protox[icp->icmp_ip.ip_p]->pr_ctlinput;
-               if (ctlfunc)
+
+               if (ctlfunc) {
+                       LCK_MTX_ASSERT(inet_domain_mutex, LCK_MTX_ASSERT_OWNED);
+
+                       lck_mtx_unlock(inet_domain_mutex);
+
                        (*ctlfunc)(code, (struct sockaddr *)&icmpsrc,
                                   (void *)&icp->icmp_ip, m->m_pkthdr.rcvif);
+
+                       lck_mtx_lock(inet_domain_mutex);
+               }
                break;
 
        badcode: