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Cisco Bug: CSCuo02233 - Avoid crash at psipending2 and make INVALID TCB error as informational

Last Modified

Sep 13, 2019

Products (16)

  • Cisco IOS
  • Cisco ASR 901-6CZ-F-D Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco ASR 901-4C-FT-D Router
  • Cisco ASR 901S-4SG-F-D Router
  • Cisco ASR 901S-2SG-F-D Router
  • Cisco ASR 901-6CZ-F-A Router
  • Cisco ASR 901-6CZ-FT-A Router
  • Cisco ASR 901-12C-FT-D Router
  • Cisco ME 3600X-24CX-M Switch
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Known Affected Releases

15.4(1)S

Description (partial) 

Symptom:
A device installed in an Active/Standby setup may experience an unexpected reset with the following message:

%TCP-2-INVALIDTCB: Invalid TCB pointer: 0xXXXXXXXX -Process= "XXXXXXXX", ipl= X, pid= X
-Traceback= XXXXXXXX XXXXXXXX XXXXXXXX

Followed by an unexpected reboot:

Address Error (load or instruction fetch) exception, CPU signal 10, PC = 0xXXXXXXXX
--------------------------------------------------------------------
   Possible software fault. Upon reccurence, please collect
   crashinfo, "show tech" and contact Cisco Technical Support.
--------------------------------------------------------------------

-Traceback= XXXXXXXX XXXXXXXX
$0 : XXXXXXXX, AT : XXXXXXXX, v0 : XXXXXXXX, v1 : XXXXXXXX
a0 : XXXXXXXX, a1 : XXXXXXXX, a2 : XXXXXXXX, a3 : XXXXXXXX
t0 : XXXXXXXX, t1 : XXXXXXXX, t2 : XXXXXXXX, t3 : XXXXXXXX
t4 : XXXXXXXX, t5 : XXXXXXXX, t6 : XXXXXXXX, t7 : XXXXXXXX
s0 : XXXXXXXX, s1 : XXXXXXXX, s2 : XXXXXXXX, s3 : XXXXXXXX
s4 : XXXXXXXX, s5 : XXXXXXXX, s6 : XXXXXXXX, s7 : XXXXXXXX
t8 : XXXXXXXX, t9 : XXXXXXXX, k0 : XXXXXXXX, k1 : XXXXXXXX
gp : XXXXXXXX, sp : XXXXXXXX, s8 : XXXXXXXX, ra : XXXXXXXX
EPC  : XXXXXXXX, ErrorEPC : XXXXXXXX, SREG     : XXXXXXXX
MDLO : 00000000, MDHI     : XXXXXXXX, BadVaddr : 0D0DXXXX
DATA_START : 0xXXXXXXXX
Cause 00000010 (Code 0x4): Address Error (load or instruction fetch) exception


Conditions:
This is seen in an Active/Standby setup.
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