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Switch reboot due to SNMPMaster died with a signal 6

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Information

 
TitleSwitch reboot due to SNMPMaster died with a signal 6
Symptoms
- Summit unexpectedly reboots
- "show debug system dump" shows SNMPMaster died with a signal 6
Environment
Summit switch running ExtremeXOS
Cause
Memory leak from many snmpbulkgets and snmpgets running on the switch
Resolution
This issue is resolved in the following versions (and later):

ExtremeXOS 21.1.1.4
ExtremeXOS 16.2.1.6
ExtremeXOS 16.1.2.14
ExtremeXOS 15.7.3.1
ExtremeXOS 15.6.3.1 Patch 1-7
ExtremeXOS 15.5.5.2
 
Additional notes
show log

displays the following:

09/08/2016 16:21:22.33 <Crit:NM.NodeStateFail> Slot-1: Slot-2 has failed for the reason of "Process Failure". 
09/08/2016 16:21:12.94 <Erro:DM.Error> Slot-2: Process snmpMaster Failed 
09/08/2016 16:21:12.94 <Erro:EPM.crash_rate> Slot-2: Process snmpMaster exceeded pre-configured or default crash rate 
09/08/2016 16:21:12.92 <Warn:cm.database> Slot-2: Configuration database locked 
09/08/2016 16:21:12.92 <Erro:EPM.proc_conn_lost> Slot-2: Connection lost with process snmpMaster 
09/08/2016 16:21:12.34 <Crit:Kern.Card.Alert> Slot-2: 2afc8b34 0320f809 jalr t9 
09/08/2016 16:21:12.34 <Crit:Kern.Card.Alert> Slot-2: 2afc8b30 00000000 nop 
09/08/2016 16:21:12.34 <Crit:Kern.Card.Alert> Slot-2: 2afc8b2c 8f99829c lw t9,-32100(gp) 
09/08/2016 16:21:12.34 <Crit:Kern.Card.Alert> Slot-2: 2afc8b28 8fa4002c lw a0,44(sp) 
09/08/2016 16:21:12.34 <Crit:Kern.Card.Alert> Slot-2: 2afc8b24 afa70028 sw a3,40(sp) 
09/08/2016 16:21:12.34 <Crit:Kern.Card.Alert> Slot-2: 2afc8b20 <afa20024>sw v0,36(sp) 
09/08/2016 16:21:12.34 <Crit:Kern.Card.Alert> Slot-2: 2afc8b1c 0000000c syscall 0 
09/08/2016 16:21:12.34 <Crit:Kern.Card.Alert> Slot-2: 2afc8b18 2402109a addiu v0,zero,4250 
09/08/2016 16:21:12.34 <Crit:Kern.Card.Alert> Slot-2: 2afc8b14 8fa7000c lw a3,12(sp) 
09/08/2016 16:21:12.34 <Crit:Kern.Card.Alert> Slot-2: Code: 
09/08/2016 16:21:12.34 <Crit:Kern.Card.Alert> Slot-2: 
09/08/2016 16:21:12.34 <Crit:Kern.Card.Alert> Slot-2: Process snmpMaster pid 1521 died with signal 6 
09/08/2016 16:21:11.88 <Warn:EPM.proc_kill> Slot-2: Process snmpMaster ID 1521 killed 
09/08/2016 16:21:11.88 <Erro:EPM.Msg.timer_thread> Slot-2: Because the snmpMasterMainThread (730154160) thread of process 1521, has not responded within 41 periods of 15 seconds, the process will be terminated. 

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