[c-nsp] 7204 NPE Bus Error

Thu Jul 24 16:38:40 EDT 2008

Does anybody know how to figure out what a bus error means on a 7204VXR 
with NPE300?  We have one that works fine for about 2 weeks and then it 
crashes.  If you reboot it, it goes in an endless bus error loop.  If 
you leave it off and fiddle with the cards, memory, etc and re-seat it 
all, eventually it will boot, but this sometimes takes days to get in there.

There is a link on cisco.com titled Troubleshooting Bus Error Crashes, 
but it isn't really much help.

It gets an error during the bootstrap and then another error upon 
loading IOS and then just loops 2 or 3 times before freezing.  There is 
an entry that says "possible software fault", but I can't imagine that 
is the case as there are errors before it even gets to IOS.  Here is the 
log from a fresh boot.

System Bootstrap, Version 12.0(19990210:195103) [12.0XE 105], 
DEVELOPMENT SOFTWARE
Copyright (c) 1994-1999 by cisco Systems, Inc.
C7200 platform with 262144 Kbytes of main memory

Self decompressing the image : 
#####################################################################
###################################################################################################
###################################################################################################
################# [OK]

=== Flushing messages () ===

*** System received a Bus Error exception ***

signal= 0xa, code= 0x1c, context= 0x6087a8d0

PC = 0x60362a38, Cause = 0x4020, Status Reg = 0x34008002
  System Bootstrap, Version 12.0(19990210:195103) [12.0XE 105], 
DEVELOPMENT SOFTWARE
Copyright (c) 1994-1999 by cisco Systems, Inc.
C7200 platform with 262144 Kbytes of main memory

Self decompressing the image : 
#####################################################################
###################################################################################################
################################################################## [OK]
                Restricted Rights Legend

Use, duplication, or disclosure by the Government is
subject to restrictions as set forth in subparagraph
(c) of the Commercial Computer Software - Restricted
Rights clause at FAR sec. 52.227-19 and subparagraph
(c) (1) (ii) of the Rights in Technical Data and Computer
Software clause at DFARS sec. 252.227-7013.

            cisco Systems, Inc.
            170 West Tasman Drive
            San Jose, California 95134-1706

Cisco Internetwork Operating System Software
IOS (tm) 7200 Software (C7200-IK9S-M), Version 12.3(26), RELEASE 
SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by cisco Systems, Inc.
Compiled Mon 17-Mar-08 19:27 by dchih

  : Data Bus Error exception, CPU signal 10, PC = 0x61F3F138

--------------------------------------------------------------------
    Possible software fault. Upon reccurence,  please collect
    crashinfo, "show tech" and contact Cisco Technical Support.
--------------------------------------------------------------------

-Traceback= 61F3F138 607F41D4 607F431C 607F2E98 607EEF60 607E9F68 
60783190 607FC398 6088E990
60782F90 60714030 60714470 607DDC94 607DDC78
$0 : 00000000, AT : 632E0000, v0 : 0000000B, v1 : 63670000
a0 : 20000000, a1 : 63686A88, a2 : 00000028, a3 : 622AF9CC
t0 : 00000000, t1 : 00000000, t2 : 00000008, t3 : 00000008
t4 : 00000000, t5 : 639224AC, t6 : 639224A8, t7 : 639224A4
s0 : 00000009, s1 : 20000000, s2 : 63686A84, s3 : 00000000
s4 : 63686A84, s5 : 63434878, s6 : 00000024, s7 : 00000021
t8 : 639224EC, t9 : 00000000, k0 : 3040D001, k1 : BE840244
gp : 632EE318, sp : 638F9138, s8 : 62280000, ra : 607F41D4
EPC  : 61F3F138, ErrorEPC : FE9A6CDB, SREG     : 3400C103
MDLO : 00000009, MDHI     : 00000010, BadVaddr : 3E665C36
DATA_START : 0x61F4DEF0
Cause 0000401C (Code 0x7): Data Bus Error exception

=== Flushing messages () ===

*** System received a Bus Error exception ***

signal= 0xa, code= 0x1c, context= 0x636a2c04

PC = 0x60815e38, Cause = 0x4020, Status Reg = 0x34008002