On Wed, 06 May 2009 18:09:25 +0530 sanjaykumar wrote:
S> Basically when application reboot then it facing problem in
"init_mib_modules()"
S> and it crash.
S> Backtrace show that most of crash come after "netsnmp_container_get_ct"
S> I run the valgrind and getting most of the same problem
S> Could anybody suggest what could be reason of this crash ???
S> One of Backtrace for the reference :
S>
S> ***********************************************************************
S> #0 0x0811f416 in netsnmp_container_get_ct (type=0x82b63e8
"udpEndpointTable") at container.c:189
See if this patch helps:
Index: snmplib/container.c
===================================================================
--- snmplib/container.c (revision 17653)
+++ snmplib/container.c (working copy)
@@ -188,6 +188,9 @@
netsnmp_container_get_ct(const char *type)
{
container_type ct;
+
+ if (NULL == containers)
+ return NULL;
ct.name = type;
return (container_type *)CONTAINER_FIND(containers, &ct);
S> 2 :
S> While application shutdown " snmp_shutdown(app_name)" getting called
S> what about the " shutdown_master_agent() and shutdown_agent()"
S> How the respective functionalities achieved by AGENT as in code it
maintained that
S> it cause the broken code
S> respective code for the reference :
S> *******************************
S> snmp_shutdown(app_name);
S> #ifdef SHUTDOWN_AGENT_CLEANLY /* broken code */
S> /* these attempt to free all known memory, but result in double frees */
S> shutdown_master_agent();
S> shutdown_agent();
S> #endif
It's well know that net-snmp does not release all resources when exiting,
depending on the OS to do it when the app ends. Running the agent as a thread
is not supported, so you'll have a lot of work ahead of you if you want a
thread to be able to shutdown cleanly, releasing all resources.
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