G/C5/B5/B3 f/w 6.61.06.0009 Reboots in "Task tEmWeb" after setting SNMPv3 User

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Article ID: 14844 

Products
G-Series, firmware 6.61.05.0009 through 6.61.09.0012
C5-Series; firmware 6.61.05.0009 through 6.61.09.0012; 6.71.01.0067, 6.71.02.0008
B5-Series; firmware 6.61.05.0009 through 6.61.09.0012; 6.71.01.0067, 6.71.02.0008
B3-Series, firmware 6.61.05.0009 through 6.61.09.0012 

Changes
Adjusted SNMPv3 user credentials ('set snmp user...'). 

Symptoms
Unit rebooted. 

The current.log (5487) reset diagnostic notifies of "Task tEmWeb" suspension, followed by last switch reset cause "Fault(0x00001100)"; for example: 
<160>Oct 22 17:48:16 10.40.50.50-1 SIM[139742728]: hwutils.c(7536) 83 %%
ERROR:Code exception:Watchdog no longer being serviced.
Task tEmWeb(0x75cb340) is suspended with error 2, creating file sysDmp2Oct2212.z
<57> OCT 22 17:48:57 2012 STK1 BOOT[268430624]: bootos.c(1360) 80 %%
Start of Code - Build:06.61.06.0009 Date:Wed Jul 25 18:46:32 2012
<110> OCT 22 17:49:59 2012 STK1 BOOT[137663712]: edb_bxs_api.c(778) 82 %%
Last switch reset caused by Fault(0x00001100) SRR0(0x00C299FC) SRR1(0x2000B030)
DMISS(0x646E6540) IMISS(0x00000000) DAR(0x00000000) DSISR(0x00000000)
The sysDmp (13650) file states "Task Name: tEmWeb" and displays a "cli_snmpBackEnd_snmpUserSet" diagnostic; for example: 
Detailed exception task information
---------------------------------

Calling Stack:
--------------
Task ID: 0x75cb340
Task Name: tEmWeb
PC: 0xc299fc
PendQ: 0x31f090c
SP: 0x75c7c80

0xc299fc: osapiFree_track (0xc295f4) + 0x408
0xec59dc: FreeOctetString (0xec5944) + 0x98
0xeb80f4: ManageUserEntry (0xeb7190) + 0xf64
0xef3578: cli_snmpBackEnd_snmpUserSet (0xef325c) + 0x31c
0x792bb4: commandSetSnmpUser (0x7924cc) + 0x6e8
0x92c640: ewsCliData (0x92a880) + 0x1dc0
0x926fb0: ewaNetTelnetData (0x9266dc) + 0x8d4
0x92cfb8: ewsTelnetParse (0x92cca4) + 0x314
0x938208: ewsParse (0x937648) + 0xbc0
0x92eb04: ewsRun (0x92e9cc) + 0x138
0x946a3c: tEmWeb (0x94699c) + 0xa0
0x1235464: vxTaskEntry (0x1235408) + 0x5c
Solution
Upgrade to 6.61 firmware 6.61.10.0008 or higher.
For the C5/B5, also fixed in firmware 6.71.03.0025 and higher. 

See also: 12664.
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