File net-snmp-5.4.x_counter-wrap-crash.patch of Package net-snmp

From: Marcus Ruckert
Subject: snmpd 5.3.0.1 core during high traffic
References: bnc#523553
Patch-mainline: r17714

Fix possible crash when 64-bit counters in ipSystemStatsTable get bigger
than 2^32.

Signed-off-by: Marcus Rueckert <mrueckert@suse.de>
Signed-off-by: Leonardo Chiquitto <lchiquitto@suse.de>

---
 systemstats_common.c |   14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

Index: agent/mibgroup/ip-mib/data_access/systemstats_common.c
===================================================================
--- agent/mibgroup/ip-mib/data_access/systemstats_common.c.orig
+++ agent/mibgroup/ip-mib/data_access/systemstats_common.c
@@ -421,13 +421,13 @@ netsnmp_access_systemstats_entry_update_
      */
     if (0 == need_wrap_check) {
         SNMP_FREE(prev_vals->old_stats);
+    } else {
+        /*
+         * update old stats from new stats.
+         * careful - old_stats is a pointer to stats...
+         */
+        memcpy(prev_vals->old_stats, &new_vals->stats, sizeof(new_vals->stats));
     }
-    
-    /*
-     * update old stats from new stats.
-     * careful - old_stats is a pointer to stats...
-     */
-    memcpy(prev_vals->old_stats, &new_vals->stats, sizeof(new_vals->stats));
 
     _calculate_entries(prev_vals);