fixup! fixup! Fix script loading synchronization issue

Author: VictorNogueiraRio

net/core/dev.c

@@ -4338,6 +4338,9 @@ static u32 netif_receive_generic_xdp(struct sk_buff *skb,
 	bool orig_bcast;
 	int hlen, off;
 	u32 mac_len;
+#ifdef CONFIG_XDP_LUA
+	struct xdplua_create_work *lw;
+#endif /* CONFIG_XDP_LUA */
 
 	/* Reinjected packets coming from act_mirred or similar should
 	 * not get XDP generic processing.
@@ -4383,7 +4386,7 @@ static u32 netif_receive_generic_xdp(struct sk_buff *skb,
 	rxqueue = netif_get_rxqueue(skb);
 	xdp->rxq = &rxqueue->xdp_rxq;
 #ifdef CONFIG_XDP_LUA
-	struct xdplua_create_work *lw = this_cpu_ptr(&luaworks);
+	lw = this_cpu_ptr(&luaworks);
 
 	xdp->skb = skb;
 	xdp->L = lw->L;
@@ -4396,7 +4399,7 @@ static u32 netif_receive_generic_xdp(struct sk_buff *skb,
 		lw->init = false;
 		spin_unlock(&lw->lock);
 	}
-#endif
+#endif /* CONFIG_XDP_LUA */
 
 	/* check if bpf_xdp_adjust_head was used */
 	off = xdp->data - orig_data;
@@ -9903,7 +9906,7 @@ static int __init net_dev_init(void)
 		sd->backlog.weight = weight_p;
 #ifdef CONFIG_XDP_LUA
 		lw->L = luaL_newstate();
-		WARN_ON(!lw->L)
+		WARN_ON(!lw->L);
 
 		if (!lw->L)
 			continue;

net/core/filter.c

@@ -5928,7 +5928,7 @@ BPF_CALL_4(bpf_lua_pcall, struct xdp_buff *, ctx, char *, funcname,
 	}
 
 clean_state:
-	lua_settop(base);
+	lua_settop(ctx->L, base);
 	return num_rets;
 }