PPTP crash - unable to decode

paolo bevilacqua · ‎03-12-2012

Is there anybody still able to decode stack traces ? The tool on Cisco.com has ceased working long time ago.

This crash happened while using PPTP and with no tool working, not matching bug foud, one is left in the dark.

System was restarted by error - a Software forced crash, PC 0x80392718 at 01:27:20 PST Mon Mar 12 2012

C870 Software (C870-ADVIPSERVICESK9-M), Version 15.1(4)M3, RELEASE SOFTWARE (fc1)

Compiled Tue 06-Dec-11 23:25 by prod_rel_team (current version)

Image text-base: 0x8002007C, data-base: 0x82D9E040

Stack trace from system failure:

FP: 0x849E1308, RA: 0x803926B0

FP: 0x849E1320, RA: 0x82019928

FP: 0x849E1340, RA: 0x82019A78

FP: 0x849E1380, RA: 0x8201CB6C

FP: 0x849E1398, RA: 0x8201CD5C

FP: 0x849E13E0, RA: 0x803948F8

FP: 0x849E13E8, RA: 0x8037AB4C

Edison Ortiz · ‎03-12-2012

The crash decode doesn't tell us much, simply points to a memory corruption:

0x803926B0:crashdump(0x80392620)+0x90

0x82019928:validblock(0x820191a0)+0x788

0x82019A78:validate_memory(0x82019970)+0x108

0x8201CB6C:checkheaps(0x8201cb04)+0x68

0x8201CD5C:checkheaps_process(0x8201cc44)+0x118

0x803948F8:ppc_process_dispatch(0x803948d4)+0x24

0x8037AB4C:process_execute(0x8037a9a4)+0x1a8

What services the router is running?

paolo bevilacqua · ‎03-12-2012

Thanks Edison. Did you used the public version ?

Logging reported a memeory block corruption and inability to allocate a small buffer before crashing.

It wasn't doing anything except terminating Windows 7 PPTP. I did not tried again connecting again, but will have to.

Edison Ortiz · ‎03-12-2012

No, I used an internal tool.

I did a quick search on PPTP related crashes as well as memory corruption against 15.1(4)M3 and nothing jumps up.

I recommend opening a TAC case if reoccurs...

Regards,

Edison