Package: snmpd
Version: 5.7.2.1+dfsg-1
Severity: normal
Tags: upstream patch
Hi!
On a system of mine where the neighbour table can get quite large, I
often get the following error:
,----
| Mar 2 10:57:26 firewall snmpd[5302]: Error allocating more space for
arpcache. Cache will continue to be limited to 1024 entries
| Mar 2 10:57:27 firewall snmpd[5302]: Error allocating more space for
arpcache. Cache will continue to be limited to 1024 entries
| Mar 2 10:57:28 firewall snmpd[5302]: Error allocating more space for
arpcache. Cache will continue to be limited to 1024 entries
| Mar 2 10:57:29 firewall snmpd[5302]: Error allocating more space for
arpcache. Cache will continue to be limited to 1024 entries
| Mar 2 10:57:30 firewall snmpd[5302]: Error allocating more space for
arpcache. Cache will continue to be limited to 1024 entries
| Mar 2 10:57:31 firewall snmpd[5302]: Error allocating more space for
arpcache. Cache will continue to be limited to 1024 entries
| Mar 2 10:57:32 firewall snmpd[5302]: Error allocating more space for
arpcache. Cache will continue to be limited to 1024 entries
| Mar 2 10:57:33 firewall snmpd[5302]: Error allocating more space for
arpcache. Cache will continue to be limited to 1024 entries
| Mar 2 10:57:34 firewall snmpd[5302]: Error allocating more space for
arpcache. Cache will continue to be limited to 1024 entries
`----
I tracked this down to bug 2678 on Sourceforge:
https://sourceforge.net/p/net-snmp/bugs/2678/
The fix is in commit d6e7f8962b110a2cd65667b2c57a8a60ad3cd222 in the
upstream git, a patch is attached for your convenience.
It would be very nice if this change can make it to Stretch before
release. The fix is simple enough that the Release-Team should unblock
the package.
Grüße,
Sven.
>From d6e7f8962b110a2cd65667b2c57a8a60ad3cd222 Mon Sep 17 00:00:00 2001
From: Niels Baggesen <n...@users.sourceforge.net>
Date: Wed, 31 Aug 2016 21:43:36 +0200
Subject: [PATCH] at.c: properly check return status from realloc. Thanks to
Daniel Eiland (bug 2678)
---
agent/mibgroup/mibII/at.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/agent/mibgroup/mibII/at.c b/agent/mibgroup/mibII/at.c
index 45ab51680..2068fd50a 100644
--- a/agent/mibgroup/mibII/at.c
+++ b/agent/mibgroup/mibII/at.c
@@ -640,11 +640,12 @@ ARP_Scan_Init(void)
struct arptab *newtab = (struct arptab *)
realloc(at, (sizeof(struct arptab) *
(arptab_curr_max_size + ARP_CACHE_INCR)));
- if (newtab == at) {
+ if (newtab == NULL) {
snmp_log(LOG_ERR,
"Error allocating more space for arpcache. "
"Cache will continue to be limited to %d entries",
arptab_curr_max_size);
+ newtab = at;
break;
} else {
arptab_curr_max_size += ARP_CACHE_INCR;
--
2.11.0
