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cwwong1973
Beginner

Cisco 3750E - Debug Exception (Could be NULL pointer dereference) Exception (0x2000) Error

I am not able to find the exact bug for Cisco 3750E stack - Debug Exception (Could be NULL pointer dereference) Exception (0x2000) error.

Closest i can find is CSCsa72400 which only affects ver 12.2(20)SE4.

All the stacks (3 switches) are running 12.2(50)SE3

It appears that the switch 1 crashed and reloaded. My hunch is its software but i cant find any related bugs. It could be hardware issue as well?

Log

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: System previously crashed with the following message: (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: Cisco IOS Software, C3750E Software (C3750E-UNIVERSALK9-M), Version 12.2(50)SE3, RELEASE SOFTWARE (fc1) (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: Technical Support: http://www.cisco.com/techsupport (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: Copyright (c) 1986-2009 by Cisco Systems, Inc. (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: Compiled Wed 22-Jul-09 05:35 by prod_rel_team (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED:   (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: Debug Exception (Could be NULL pointer dereference) Exception (0x2000)! (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED:   (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: SRR0 = 0x01A90BD0  SRR1 = 0x00029230  SRR2 = 0x0075DED4  SRR3 = 0x00021000 (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: ESR = 0x00000000  DEAR = 0x00000000  TSR = 0x8C000000  DBSR = 0x10000000 (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED:   (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: CPU Register Context: (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: Vector = 0x00002000  PC = 0x00BBE6BC  MSR = 0x00029230  CR = 0x20000002 (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: LR = 0x00BBE680  CTR = 0x01A85F3C  XER = 0x6000007F (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: R0 = 0x00BBE680  R1 = 0x037B7B20  R2 = 0x00000000  R3 = 0x0552B024 (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: R4 = 0x00000000  R5 = 0x00000000  R6 = 0x00000000  R7 = 0x00000000 (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: R8 = 0x00007530  R9 = 0x00000000  R10 = 0x00000000  R11 = 0x00000005 (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: R12 = 0x62E847D3  R13 = 0x0F9817A8  R14 = 0x01A8433C  R15 = 0x00000000 (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: R16 = 0x00000000  R17 = 0x00000000  R18 = 0x00000000  R19 = 0x00000000 (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: R20 = 0x00000000  R21 = 0x00000000  R22 = 0x00000000  R23 = 0x02D70000 (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: R24 = 0xAB1234AB  R25 = 0x064FF624  R26 = 0x00000000  R27 = 0x02ECE084 (XXX-XX-L04-01-1)

May  3 15:55:58.317 AEST: %PLATFORM-1-CRASHED: R28 = 0x00000001  R29 = 0x025EB990  R30 = 0x064FF624  R31 = 0x00000000 (XXX-XX-L04-01-1)

May  3 15:55:58.325 AEST: %PLATFORM-1-CRASHED:   (XXX-XX-L04-01-1)

May  3 15:55:58.325 AEST: %PLATFORM-1-CRASHED: Stack trace: (XXX-XX-L04-01-1)

May  3 15:55:58.325 AEST: %PLATFORM-1-CRASHED: PC = 0x00BBE6BC, SP = 0x037B7B20 (XXX-XX-L04-01-1)

May  3 15:55:58.325 AEST: %PLATFORM-1-CRASHED: Frame 00: SP = 0x037B7B30    PC = 0x00BBE680 (XXX-XX-L04-01-1)

May  3 15:55:58.325 AEST: %PLATFORM-1-CRASHED: Frame 01: SP = 0x037B7B60    PC = 0x01A81050 (XXX-XX-L04-01-1)

May  3 15:55:58.325 AEST: %PLATFORM-1-CRASHED: Frame 02: SP = 0x037B7B78    PC = 0x01A80C40 (XXX-XX-L04-01-1)

May  3 15:55:58.325 AEST: %PLATFORM-1-CRASHED: Frame 03: SP = 0x037B7BB0    PC = 0x01A81894 (XXX-XX-L04-01-1)

May  3 15:55:58.325 AEST: %PLATFORM-1-CRASHED: Frame 04: SP = 0x037B7BC8    PC = 0x01A841CC (XXX-XX-L04-01-1)

May  3 15:55:58.325 AEST: %PLATFORM-1-CRASHED: Frame 05: SP = 0x037B7BE0    PC = 0x01A843DC (XXX-XX-L04-01-1)

May  3 15:55:58.325 AEST: %PLATFORM-1-CRASHED: Frame 06: SP = 0x037B7BE8    PC = 0x00BC0648 (XXX-XX-L04-01-1)

May  3 15:55:58.325 AEST: %PLATFORM-1-CRASHED: Frame 07: SP = 0x00000000    PC = 0x00BB7118 (XXX-XX-L04-01-1)

May  3 15:55:58.325 AEST: %PLATFORM-1-CRASHED:   (XXX-XX-L04-01-1)

The strange thing is there is a crashinfo folder but there is no files in there.

Directory of flash:/

2  -rwx       38808  Apr 25 2013 04:54:09 +10:00  config.text

3  -rwx        2204   Mar 1 1993 11:01:28 +11:00  vlan.dat

4  -rwx        3096  Apr 25 2013 04:54:09 +10:00  multiple-fs

5  -rwx       38789  Mar 15 2013 14:03:20 +11:00  config.text.backup

6  drwx         512   Mar 1 1993 11:34:31 +11:00  c3750e-universalk9-mz.122-50.SE3

429  drwx         512   May 3 2013 15:51:16 +10:00  crashinfo_ext  <--new directory

430  -rwx          24  Mar 15 2013 14:03:20 +11:00  private-config.text.backup

431  -rwx       40015  Apr 22 2013 02:36:08 +10:00  SD194725

432  -rwx          24  Apr 25 2013 04:54:09 +10:00  private-config.text

433  drwx         512   Mar 1 1993 11:00:08 +11:00  crashinfo

57671680 bytes total (27945984 bytes free)

XXX-XX-L04-01-1#cd crashinfo_ext

XXX-XX-L04-01-1#dir

Directory of flash:/crashinfo_ext/

No files in directory

57671680 bytes total (27945984 bytes free)

----------------------------------------

Any suggestions would be very much appreciated.

Thanks

Wong

4 REPLIES 4
Leo L
VIP Community Legend

Try not to use 12.2(50)SE IOS.

I've got good success with 12.2(55)SE7.  Give that a try and observe.

Gabriel Hill
Beginner

Hello cwwong,

I found the following:

CSCsz20865

IOS is pretty close to the same, and it is similar to your issue. Was the switch that restarted the master of the stack?

Thanks,
Gabriel

Bilal Nawaz
Engager

Can you try a

show flash1:

See if this displays anything.
The show flash command only shows flash content of the master.

I also couldn't find much on it

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCsa72400

Sent from Cisco Technical Support iPhone App

Please rate useful posts & remember to mark any solved questions as answered. Thank you.
cwwong1973
Beginner

Guys,

Thanks for your suggestions and replies. Really appreciate it.

Gab,

The master switch is switch 2. The switch 1 was the one crashed for no reason. Only happened once so i dont think its related to the bug you mentioned. No change to enviroment

Bilal,

My apologies...i obmitted some of the information.

The displays are from switch 1. I've sessioned to it.

The directory was created (at the same time of crash) - crashinfo_ext.

But there are no files in the directory.

leolaohoo,

Thanks...i'll  keep a note of this.

Cheers

Wong