From 4f13c9a291eeeb2f3d3b7654308b13396fe020af Mon Sep 17 00:00:00 2001
From: Daniel-Constantin Mierla <miconda@gmail.com>
Date: Thu, 19 Jul 2018 10:28:24 +0200
Subject: [PATCH] dialog: safety check for dialog hash table inside dlg_get()

- GH #1594
---
 src/modules/dialog/dlg_hash.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/modules/dialog/dlg_hash.c b/src/modules/dialog/dlg_hash.c
index 23955eaf5e8..a6c8cdeb7bf 100644
--- a/src/modules/dialog/dlg_hash.c
+++ b/src/modules/dialog/dlg_hash.c
@@ -801,6 +801,10 @@ struct dlg_cell* get_dlg( str *callid, str *ftag, str *ttag, unsigned int *dir)
 	struct dlg_cell *dlg;
 	unsigned int he;
 
+	if(d_table==NULL) {
+		LM_ERR("dialog hash table not available\n");
+		return 0;
+	}
 	he = core_hash(callid, 0, d_table->size);
 	dlg = internal_get_dlg(he, callid, ftag, ttag, dir, 0);