Help needed in debugging the crash of kernel stack overflow

[sandeep malik]

Hi,
We are using MSC7120 (e300 based) board running Montavista Linux 2.4. We are observing a random crash with the following dump:
Kernel stack overflow in process c5b22000, r1=c5b22460
NIP: 00000000 XER: 20000000 LR: 00000000 SP: C5B22460 REGS: c5b223b0 TRAP: 0400    Tainted: P
MSR: 20001032 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 11
TASK = c5b22000[175] 'insmod' Last syscall: -1
last math 00000000 last altivec 00000000
GPR00: 00000000 C5B22460 C5B22000 C5B22470 00000000 20001032 00000000 00000000
GPR08: F0000700 00000000 00000008 00000001 24224482 1033BB30 00000000 00000000
GPR16: 00000000 00000000 00000000 00000001 00001032 05B22460 00000000 00000000
GPR24: 00000000 00000200 C7B09400 C016A240 C5B23D80 00000010 00000000 C7B09400
Call backtrace:
70536574 34205220 00000000 00000000 00000000 55555555 55555555
55555555 55555555 55555555 55515555 55555555 55555555 55515555
55555555 55555555 494C450A 66363531 4F4E455F 35382054 38383053
20542056 43686563 53797353 35632052 70383830 74205670 0A636230
436D640A 38383053 24108028 C5C740C8 C00059AC
Kernel panic: kernel stack overflow
In interrupt handler - not syncing
Any idea what might be going wrong or how to approach this problem as it is not getting reproduced and the behaviour is very random. Any pointers will be helpful.
Regards,
SM


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