WS-C2960-48PST-L - System returned to ROM by address error at PC 0x1532EA0, address 0x0

[lwilfredoflor]

Hi everyone,  I have a 2960 which has been stable for several months. The switch crashed and then automatically reloaded. This event generated the following crashinfo, on CLI analyzer, its just saying about, to open a tac case :/ 

Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 12.2(55)SE10, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Wed 11-Feb-15 11:46 by prod_rel_team

Debug Exception (Could be NULL pointer dereference) Exception (0x2000)!

SRR0 = 0x006D14CC SRR1 = 0x00029230 SRR2 = 0x01532EA0 SRR3 = 0x00029230
ESR = 0x00000000 DEAR = 0x00000000 TSR = 0x84000000 DBSR = 0x10000000

CPU Register Context:
Vector = 0x00002000 PC = 0x01532EA0 MSR = 0x00029230 CR = 0x20000002
LR = 0x01532E64 CTR = 0x0120D618 XER = 0x4000002E
R0 = 0x01532E64 R1 = 0x0272E338 R2 = 0x00000000 R3 = 0x033FCB10
R4 = 0xFFFFFFFE R5 = 0x00000000 R6 = 0x0272E320 R7 = 0x00000000
R8 = 0x00000000 R9 = 0x00000000 R10 = 0x02030000 R11 = 0x033FCB0C
R12 = 0x0000001D R13 = 0x00110000 R14 = 0x014D3B2C R15 = 0x00000000
R16 = 0x00000000 R17 = 0x00000000 R18 = 0x00000000 R19 = 0x00000000
R20 = 0x00000000 R21 = 0x00000000 R22 = 0x00000000 R23 = 0x02030000
R24 = 0xAB1234AB R25 = 0x03B5FAD4 R26 = 0x00000000 R27 = 0x038000A8
R28 = 0x00000001 R29 = 0x01A65240 R30 = 0x03B5FAD4 R31 = 0x00000000

Stack trace:
PC = 0x01532EA0, SP = 0x0272E338
Frame 00: SP = 0x0272E348 PC = 0x01532E64
Frame 01: SP = 0x0272E378 PC = 0x014D05F4
Frame 02: SP = 0x0272E390 PC = 0x014D01E4
Frame 03: SP = 0x0272E3C8 PC = 0x014D0E78
Frame 04: SP = 0x0272E3E0 PC = 0x014D39BC
Frame 05: SP = 0x0272E3F8 PC = 0x014D3BCC
Frame 06: SP = 0x0272E400 PC = 0x01535030
Frame 07: SP = 0x00000000 PC = 0x0152B804

[Leo Laohoo]

Try upgrading to 12.2(55)SE12.

[lwilfredoflor]

Hi Leo thanks for your response. sure, we are not running the recommended one, but we still want to know the code meaning 

[a.alekseev]

just open the case and probably you will know :)

[Leo Laohoo]

Raise a TAC Case and they'll interpret the errors.

[lwilfredoflor]

Leo, thanks for the response, We just wanted to see if the problem had arisen in the community, since we have metrics to check for rebate, so tac case isnt for us.

[ysotocob]

The root cause of the crash is a memory allocation failure on the switch. With this information we will need to figure out was is the cause of the memory corruption.
It would be suggested to upgrade the IOS version to the suggested one and monitor. The extended crash file will provide a map of the memory at the moment of the crash but further analysis on this would be provided by Cisco TAC with further information about the current status of the switch.