cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
4065
Views
5
Helpful
6
Replies

Error: TLB Modification exception, CPU signal 10, PC = 0x44128678

Hi guys,

One of our router, suddenly stopped working.

When we console in to the router and do a hard reboot, we receive this error message and doesn't boot up.

Here the logs:

System Bootstrap, Version 12.4(13r)T11, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 2009 by cisco Systems, Inc.

Initializing memory for ECC

....

c2821 platform with 1048576 Kbytes of main memory

Main memory is configured to 64 bit mode with ECC enabled

Upgrade ROMMON initialized

program load complete, entry point: 0x8000f000, size: 0xcb80

program load complete, entry point: 0x8000f000, size: 0xcb80

program load complete, entry point: 0x8000f000, size: 0x37142c8

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

Smart Init is enabled

smart init is sizing iomem

  ID            MEMORY_REQ                 TYPE

0003E8          0X00474800 C2821 Mainboard

                0X00264050 Onboard VPN

                0X000021B8 Onboard USB

                0X002C29F0 public buffer pools

                0X00211000 public particle pools

TOTAL:          0X00BAE3F8

If any of the above Memory Requirements are

"UNKNOWN", you may be using an unsupported

configuration or there is a software problem and

system operation may be compromised.

Rounded IOMEM up to: 12Mb.

Using 1 percent iomem. [12Mb/1024Mb]

: TLB Modification exception, CPU signal 10, PC = 0x44128678

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

   Possible hardware fault. This could be an one time occurence,

   upon reccurence please collect crashinfo, "show tech" and contact Cisco Technical Support.

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

-Traceback= 0x441268D8z 0x4008CC14z 0x43227BA4z 0x4007FBB4z 0x40071118z

$0 : 00000000, AT : 46E10000, v0 : 00000000, v1 : 40000000

a0 : 3F400080, a1 : 00000000, a2 : FFFF3DEC, a3 : 00000000

t0 : 3FCFCF8B, t1 : 00000000, t2 : 00000001, t3 : BEEFBACC

t4 : BEEF0000, t5 : 00000000, t6 : FFFF9EF8, t7 : 80000000

s0 : 3F400080, s1 : 3F400050, s2 : 46E49240, s3 : 000037EC

s4 : 00000000, s5 : 00000020, s6 : 4322993C, s7 : 000037E8

t8 : 0088C868, t9 : 0000000F, k0 : 3040A801, k1 : A000F000

gp : 46E13980, sp : 8000ED58, s8 : 00000000, ra : 4008E9B4

EPC  : 44128678, ErrorEPC : BFC0038C, SREG     : 34008003

MDLO : 00000000, MDHI     : 00000000, BadVaddr : 40000000

CacheErr : D0800181, DErrAddr0 : 071E6370, DErrAddr1 : 06E49350

TEXT_START : 0x400116A0

DATA_START : 0x441A1DA0

Cause 00000004 (Code 0x1): TLB Modification exception

: TLB (load or instruction fetch) exception, CPU signal 10, PC = 0x0

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

   Possible software fault. Upon reccurence,  please collect

   crashinfo, "show tech" and contact Cisco Technical Support.

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

-Traceback= 0x400526DCz 0x40052B54z 0x40056344z 0x40055FC8z

$0 : 00000000, AT : 46E10000, v0 : 00000030, v1 : 46C60000

a0 : 471E5A24, a1 : A0001E89, a2 : FFFFFFFD, a3 : A0002215

t0 : 441AAED1, t1 : 441AAED0, t2 : 469A0000, t3 : 00000000

t4 : 469A0000, t5 : 00000000, t6 : 00000001, t7 : 00000001

s0 : 00000000, s1 : 00000000, s2 : A0001E89, s3 : 46490000

s4 : 00000038, s5 : 471E0000, s6 : 471E0000, s7 : 4712DFE8

t8 : 00000000, t9 : 46980000, k0 : 471E3BE8, k1 : 00000038

gp : 46E13980, sp : 46496BD8, s8 : 00000000, ra : 4005447C

EPC  : 00000000, ErrorEPC : BFC0038C, SREG     : 34008003

MDLO : 00000000, MDHI     : 00000004, BadVaddr : 00000000

CacheErr : D0800181, DErrAddr0 : 0712E010, DErrAddr1 : 0697FE80

TEXT_START : 0x400116A0

DATA_START : 0x441A1DA0

Cause 00000008 (Code 0x2): TLB (load or instruction fetch) exception

Nested write_crashinfo call (2 times)

: TLB (load or instruction fetch) exception, CPU signal 10, PC = 0x0

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

   Possible software fault. Upon reccurence,  please collect

   crashinfo, "show tech" and contact Cisco Technical Support.

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

-Traceback= 0x40052714z 0x40052B54z 0x40056344z 0x40055FC8z

$0 : 00000000, AT : 46E10000, v0 : 00000027, v1 : 00000027

a0 : 00000002, a1 : 4712DFE8, a2 : 46C60000, a3 : 00000000

t0 : 441AB24D, t1 : 441AB24C, t2 : 34008000, t3 : FFFF00FF

t4 : 40058ED0, t5 : 00000000, t6 : 00000000, t7 : 00000021

s0 : 471E0000, s1 : 0000000A, s2 : 441B0000, s3 : 46490000

s4 : 00000038, s5 : 00000001, s6 : 00000000, s7 : 4712DFE8

t8 : 00000021, t9 : FFFFFFFF, k0 : 471E3BE8, k1 : 00000038

gp : 46E13980, sp : 46496B68, s8 : 00000000, ra : 400544B4

EPC  : 00000000, ErrorEPC : BFC0038C, SREG     : 34008003

MDLO : 00000000, MDHI     : 00000002, BadVaddr : 00000000

CacheErr : D0800181, DErrAddr0 : 1FA80028, DErrAddr1 : 06496B60

TEXT_START : 0x400116A0

DATA_START : 0x441A1DA0

Cause 00000008 (Code 0x2): TLB (load or instruction fetch) exception

Nested write_crashinfo call (3 times)

: TLB (load or instruction fetch) exception, CPU signal 10, PC = 0x0

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

   Possible software fault. Upon reccurence,  please collect

   crashinfo, "show tech" and contact Cisco Technical Support.

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

-Traceback= 0x40052714z 0x40052B54z 0x40056344z 0x40055FC8z

$0 : 00000000, AT : 46E10000, v0 : 00000027, v1 : 00000027

a0 : 00000002, a1 : 4712DFE8, a2 : 46C60000, a3 : 00000000

t0 : 441AB24D, t1 : 441AB24C, t2 : 34008000, t3 : FFFF00FF

t4 : 40058ED0, t5 : 00000000, t6 : 00000000, t7 : 00000021

s0 : 471E0000, s1 : 0000000A, s2 : 441B0000, s3 : 46490000

s4 : 00000038, s5 : 00000001, s6 : 00000000, s7 : 4712DFE8

t8 : 00000021, t9 : FFFFFFFF, k0 : 471E3BE8, k1 : 00000038

gp : 46E13980, sp : 46496B68, s8 : 00000000, ra : 400544B4

EPC  : 00000000, ErrorEPC : BFC0038C, SREG     : 34008003

MDLO : 00000000, MDHI     : 00000002, BadVaddr : 00000000

CacheErr : D0800181, DErrAddr0 : 1FA80028, DErrAddr1 : 06496B60

TEXT_START : 0x400116A0

DATA_START : 0x441A1DA0

Cause 00000008 (Code 0x2): TLB (load or instruction fetch) exception

-Traceback= 0x40052714z 0x40052B54z 0x40056344z 0x40055FC8z

: TLB (load or instruction fetch) exception, CPU signal 10, PC = 0x0

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

   Possible software fault. Upon reccurence,  please collect

   crashinfo, "show tech" and contact Cisco Technical Support.

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

-Traceback= 0x40052B54z 0x40056344z

: 00000000, _P : 471E0000,  : 46490000,  : 471E0000

: 00011C81,  : 47470000,  : 46C60000,  : 400548F4

: 00000000, signal=10, sr=0x34008003, epc=0x41973B8C, err epc=0xBFC0038C

||||

Could please someone assist us on this issue? And how to fix it?

Thanks and regards,

Jenalyn Forbes

1 Accepted Solution

Accepted Solutions

ing_ivandez
Level 1
Level 1

Hello engineers!

Sorry for my late answer XD.

At the end it was an IOS problem, we contacted to Cisco TAC and they send us a testing IOS version, because also they had problems determining the exactly cause of the bug.

At this time, with this new IOS we have had no problems. Also, they told us that, with a regular upgrade to the next version, in some cases the problem is solved.

Thank you for the support!

Best regards.

View solution in original post

6 Replies 6

ing_ivandez
Level 1
Level 1

Hi Jenalyn

I have the same problem that you have. My device is a CISCO1941/K9 and has crashed to many times with the next cause on the crash_info file:

13:04:40 UTC Thu Aug 1 2013: TLB Modification exception, CPU signal 10, PC = 0x230C3914

--------------------------------------------------------------------
   Possible hardware fault. This could be an one time occurence,
   upon reccurence please collect crashinfo, "show tech" and contact Cisco Technical Support.
----------------------------------------------------------------------


Cause 00000004 (Code 0x1): TLB Modification exception

So, I wanna know if you found a workaround  or solution to this crashes and error. I appreciate that hyou can respon me.

Thanks. Ivan

You may need to consider upgrading your IOS, Ivan.

ing_ivandez
Level 1
Level 1

Hello engineers!

Sorry for my late answer XD.

At the end it was an IOS problem, we contacted to Cisco TAC and they send us a testing IOS version, because also they had problems determining the exactly cause of the bug.

At this time, with this new IOS we have had no problems. Also, they told us that, with a regular upgrade to the next version, in some cases the problem is solved.

Thank you for the support!

Best regards.

Can you please mark this thread as "Answered"?

I can´t because I didn´t open it XD

Ask Jenalyn

Regards!

ccie4297
Level 1
Level 1

One more solution for those who may also encounter this problem... I receieved the exact same error output and all I had to do was to reseat the RAM chips in our 2811 and voila, the problem is solved.

    Cheers,

        Ken

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Innovations in Cisco Full Stack Observability - A new webinar from Cisco