From: Hans Dedecker <dedeckeh@gmail.com>
Date: Mon, 2 Nov 2015 10:16:10 +0000 (+0100)
Subject: lua: Fix stack imbalance in ubus_event_handler
X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fubus.git;a=commitdiff_plain;h=d23b07a9ff999275c09957cb385e10cb729abd17

lua: Fix stack imbalance in ubus_event_handler

The value from getglobal wasn't being removed from the stack,
resulting in an ever growing stack in the ubus event handler.

Signed-off-by: Karl Vogel <karl.vogel@gmail.com>
Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
---

diff --git a/lua/ubus.c b/lua/ubus.c
index a48fb7d..2903e7b 100644
--- a/lua/ubus.c
+++ b/lua/ubus.c
@@ -597,10 +597,13 @@ ubus_event_handler(struct ubus_context *ctx, struct ubus_event_handler *ev,
 
 	lua_getglobal(state, "__ubus_cb_event");
 	lua_rawgeti(state, -1, listener->r);
+	lua_remove(state, -2);
 
 	if (lua_isfunction(state, -1)) {
 		ubus_lua_parse_blob_array(state, blob_data(msg), blob_len(msg), true);
 		lua_call(state, 1, 0);
+	} else {
+		lua_pop(state, 1);
 	}
 }