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1050971 - snmpd segfault with entry->sysUpTime = *sysUT_var.val.integer
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commit 9f4c572614091404decba0d4ef1a4cbaf9fc5bd2
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Author: Jan Safranek <jsafranek@users.sourceforge.net>
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Date: Thu Jan 9 13:35:27 2014 +0100
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CHANGES: snmpd: Fixed monitoring based on non-delta trigger.
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snmpd crashed wit following snmpd.conf:
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monitor -s -D -r 10 -e LOGMATCH -o logMatchCurrentCount "Log Match" != logMatchCurrentCount
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logmatch LoginFailure1 /var/log/secure 10 su: .*fail.*
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The reason was unitialized variable sysUT_var in mteTrigger_run(), it was
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filled only if the trigger was delta-valued, while its value was used for all
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triggers.
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With this patch, sysUT_var is filled for all code branches where it is needed.
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diff --git a/agent/mibgroup/disman/event/mteTrigger.c b/agent/mibgroup/disman/event/mteTrigger.c
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index bb585ed..11cb5b7 100644
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--- a/agent/mibgroup/disman/event/mteTrigger.c
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+++ b/agent/mibgroup/disman/event/mteTrigger.c
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@@ -533,6 +533,13 @@ mteTrigger_run( unsigned int reg, void *clientarg)
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} /* !old_results - end of else block */
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} /* MTE_TRIGGER_EXISTENCE */
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+ /*
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+ * We'll need sysUpTime.0 regardless...
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+ */
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+ DEBUGMSGTL(("disman:event:delta", "retrieve sysUpTime.0\n"));
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+ memset( &sysUT_var, 0, sizeof( netsnmp_variable_list ));
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+ snmp_set_var_objid( &sysUT_var, _sysUpTime_instance, _sysUpTime_inst_len );
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+ netsnmp_query_get( &sysUT_var, entry->session );
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if (( entry->mteTriggerTest & MTE_TRIGGER_BOOLEAN ) ||
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( entry->mteTriggerTest & MTE_TRIGGER_THRESHOLD )) {
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@@ -582,14 +589,6 @@ mteTrigger_run( unsigned int reg, void *clientarg)
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* (including sysUpTime.0 if not specified explicitly).
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*/
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if ( entry->flags & MTE_TRIGGER_FLAG_DELTA ) {
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- /*
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- * We'll need sysUpTime.0 regardless...
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- */
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- DEBUGMSGTL(("disman:event:delta", "retrieve sysUpTime.0\n"));
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- memset( &sysUT_var, 0, sizeof( netsnmp_variable_list ));
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- snmp_set_var_objid( &sysUT_var, _sysUpTime_instance,
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- _sysUpTime_inst_len );
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- netsnmp_query_get( &sysUT_var, entry->session );
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if (!(entry->flags & MTE_TRIGGER_FLAG_SYSUPT)) {
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/*
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