Index: sys/netinet/tcp_usrreq.c
===================================================================
--- sys/netinet/tcp_usrreq.c
+++ sys/netinet/tcp_usrreq.c
@@ -2075,7 +2075,8 @@
 	}
 	if (ptr)  {
 		memset(ptr, 0, mem_sz);
-		INP_WLOCK_RECHECK_CLEANUP(inp, free(ptr, M_CC_MEM));
+		INP_WLOCK_RECHECK_CLEANUP(inp,
+		    CC_LIST_RUNLOCK(); free(ptr, M_CC_MEM));
 	} else
 		INP_WLOCK_RECHECK(inp);
 	CC_LIST_RUNLOCK();