Index: channels/chan_sip.c
===================================================================
--- channels/chan_sip.c	(revision 397590)
+++ channels/chan_sip.c	(working copy)
@@ -28069,6 +28069,7 @@
 				/* size of the string making up the cause code is "SIP " + cause length */
 				data_size += 4 + strlen(REQ_OFFSET_TO_STR(req, rlpart2));
 				cause_code = ast_alloca(data_size);
+				memset(cause_code, 0, data_size);
 
 				ast_copy_string(cause_code->chan_name, ast_channel_name(p->owner), AST_CHANNEL_NAME);
 
@@ -34716,7 +34717,12 @@
 
 	clear_sip_domains();
 	sip_cfg.contact_acl = ast_free_acl_list(sip_cfg.contact_acl);
+	if (sipsock_read_id) {
+		ast_io_remove(io, sipsock_read_id);
+		sipsock_read_id = NULL;
+	}
 	close(sipsock);
+	io_context_destroy(io);
 	ast_sched_context_destroy(sched);
 	con = ast_context_find(used_context);
 	if (con) {
@@ -34730,6 +34736,11 @@
 	sip_reqresp_parser_exit();
 	sip_unregister_tests();
 
+	if (notify_types) {
+		ast_config_destroy(notify_types);
+		notify_types = NULL;
+	}
+
 	ast_format_cap_destroy(sip_tech.capabilities);
 	sip_cfg.caps = ast_format_cap_destroy(sip_cfg.caps);