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Re: [OCLUG-Tech] exception in kernel mode

  • Subject: Re: [OCLUG-Tech] exception in kernel mode
  • From: Martin Hicks <mort [ at ] bork [ dot ] org>
  • Date: Tue, 22 Aug 2006 22:20:07 -0400
On Tue, Aug 22, 2006 at 07:47:05PM -0400, Zhao, Joe wrote:
> Hi, 
> 
> I got the following exception on my target system running linux kernel 2.4.18. Does anybody know what is the cause of the exception. The target is running NPe405h CPU.
> 
> Thanks.
> 

I strongly doubt that this is a kernel.org kernel.  is it really 2.4.18,
or was it a kernel tree provided by your embedded provider (windriver,
or similar)

But anyways, 2.4.18 is ancient.  You'll probably not get a lot of help
with this one.  Search google.  I also hav eno idea what jh2bh() is.  bh
is buffer_head, but I don't know what jh is.   What filesystem?  JFS?

mh

> Joe
> 
> 
> ========================================
> 
> # Assertion failure in do_get_write_access() at transaction.c:731: "(((jh2bh(jh))->b_state & (1UL <
> < BH_Uptodate)) != 0)"
> Oops: Exception in kernel mode, sig: 4
> NIP: C006C6E0 XER: 00000000 LR: C006C6E0 SP: CB063D10 REGS: cb063c50 TRAP: 0700    Tainted: P
> MSR: 00009030 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
> TASK = cb062000[8141] 'snmpd' Last syscall: 5
> last math 00000000 last altivec 00000000
> PLB0: bear= 0x0001200a acr=   0x00000000 besr=  0x00000000
> PLB0 to OPB: bear= 0x00000000 besr0= 0x00000000 besr1= 0x00000000
> 
> GPR00: C006C6E0 CB063D10 CB062000 00000021 00001030 00000001 00000006 C0180000
> GPR08: C0180000 C01C0000 00000000 CB063C20 44002448 100CAE20 00000000 00000000
> GPR16: 00000000 0FFEF994 0FFECFEC CFBE9848 CFE90400 00000001 00008000 00000000
> GPR24: 00000000 CE5C6BA0 CFBC8660 CE58C860 C3E29A30 C0150000 00000000 24008442
> Call backtrace:
> C006C6E0 C006CBCC C00611E8 C0066D00 C00440AC C00446A8 C0035EC4
> C00362A4 C0002948 0FFD64A4 0FD92E80 0FD93100 0FD8A70C 0FD8C30C
> 0FD886B0 0FD884E8 0F3C1D20 0F3A8170 10027E40 10020230 10020660
> 1002E404 10034F60 1002C834 10021410 1002A438 0FFD0570 0F664498
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-- 
Martin Hicks || mort [ at ] bork [ dot ] org || PGP/GnuPG: 0x4C7F2BEE