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7100 - Module restart with Thread Name: tSshM0

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Title7100 - Module restart with Thread Name: tSshM0
Symptoms
Switch restarts with the following messages logged:

Message 2/54 Informational 08.32.02.0008 09/15/2016 09:24:15 

Device was last fully operational in user mode: 48 seconds ago. Last res 
et caused by: watchdog reset. 

============================================================================== 
Message 3/54 Exception PPC750 Info 08.32.02.0008 09/15/2016 09:23:53 

Exc Vector: Machine Check exception (0x00000200) 
Thread Name: IDLE 
Exc Addr: 0x017a41d0 
Thread Stack: 0x0c4a9000..0x0c4a8000 
Stack Pointer: 0x0c4a8f90 
Traceback Stack: 
[ 0] 0xeeeeeeee 
[ 1] 0x0262d694 
[ 2] 0x017a4ce4 
[ 3] 0x00000000 
SPECIFIC EXCEPTION INFO: 

Watchdog Timeout exception. 

mcssr0 : 0x017abcc0 
mcssr1 : 0x00001030 
mcar : 0x00000000 
mcsr : 0x00000000 
mcpsumr : 0x00000002 
GENERAL EXCEPTION INFO: 
srr0 : 0x017a41d0 srr1 : 0x02001230 dear : 0x00000000 
cr : 0x00000008 xer : 0x00000000 spefscr : 0x00000000 
esr : 0x00000000 
GENERAL REGISTER INFO: 
msr : 0x02001230 lr : 0x00448438 ctr : 0x004483d4 
pc : 0x017a41d0 cr : 0x00000008 xer : 0x00000000 
r[ 0]:0x00000001 r[ 1]:0x0c4a8f80 r[ 2]:0x03de4900 r[ 3]:0x02029230 
r[ 4]:0x02001230 r[ 5]:0x00000000 r[ 6]:0x00000000 r[ 7]:0x00000000 
r[ 8]:0x00000000 r[ 9]:0x04460000 r[10]:0x00000000 r[11]:0x00000000 
r[12]:0x004483d4 r[13]:0x04468ca0 r[14]:0x00000000 r[15]:0x00000000 
r[16]:0x00000000 r[17]:0x00000000 r[18]:0x00000000 r[19]:0x00000000 
r[20]:0x00000000 r[21]:0x00000000 r[22]:0x00000000 r[23]:0x00000000 
r[24]:0x00000000 r[25]:0x00000000 r[26]:0x00000000 r[27]:0x00000000 
r[28]:0x00000000 r[29]:0x00000000 r[30]:0x04466400 r[31]:0x00000000 
-------------------------------------------------------------------

Message 4/54 Informational 08.32.02.0008 09/15/2016 09:21:50 

Board reset itself 

============================================================================== 
Message 5/54 Exception PPC750 Info 08.32.02.0008 09/15/2016 09:21:50 

Exc Vector: DSI exception (0x00000300) 
Thread Name: tSshM0 
Exc Addr: 0x016d5b38 
Thread Stack: 0x24114000..0x24104000 
Stack Pointer: 0x24113300 
Traceback Stack: 
[ 0] 0x016d5ae8 
[ 1] 0x016d6598 
[ 2] 0x016d66f0 
[ 3] 0x016d6754 
[ 4] 0x00e3a150 
[ 5] 0x016d4f50 
[ 6] 0x016d7cac 
[ 7] 0x01765334 
[ 8] 0x017654cc 
[ 9] 0x0176552c 
[10] 0x00dee0cc 
[11] 0x00df20ec 
[12] 0x00d66bc8 
[13] 0x00d66d7c 
[14] 0x017a4ce4 
[15] 0x00000000 
GENERAL EXCEPTION INFO: 
srr0 : 0x016d5b38 srr1 : 0x02029230 dear : 0xdded290f 
cr : 0x88088488 xer : 0x00000000 spefscr : 0x00000000 
esr : 0x00800000 
GENERAL REGISTER INFO: 
msr : 0x02029230 lr : 0x016d5ae8 ctr : 0x01694090 
pc : 0x016d5b38 cr : 0x88088488 xer : 0x20000000 
r[ 0]:0xadbe990f r[ 1]:0x24113140 r[ 2]:0x03de4900 r[ 3]:0x00005010 
r[ 4]:0x302e9000 r[ 5]:0x00000003 r[ 6]:0x24064f30 r[ 7]:0x05f760f0 
r[ 8]:0x240958e8 r[ 9]:0x00000002 r[10]:0x00000002 r[11]:0x00000000 
r[12]:0x030319fd r[13]:0x04468ca0 r[14]:0x01000000 r[15]:0x24129b60 
r[16]:0x05759338 r[17]:0x00001000 r[18]:0x03299ea8 r[19]:0x00000000 
r[20]:0x00000000 r[21]:0x00000000 r[22]:0x00000001 r[23]:0x00000005 
r[24]:0x00000020 r[25]:0x00000001 r[26]:0xdded290f r[27]:0x302e3ff0 
r[28]:0x00005010 r[29]:0x24113178 r[30]:0x302e3ff0 r[31]:0x05dbd2b8 
Environment
  • 7100 Series
  • Firmware: 8.42.02.0012
  • Exception PPC750 Info
  • DSI exception
  • Thread Name:  tSshM0
Cause
It is related to a memory issue and was identified in the fixes of the release notes under "Management Problems Corrected in 8.42.02.0012 "
Resolution
Corrected in 8.42.02.0012.

Upgrade to a later version that will include the fix introduced in the above mentioned version.
Additional notes

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