[ale] Time to pick some brains technically

stephen stephen at phynp6.phy-astr.gsu.edu
Fri Oct 18 12:28:28 EDT 2002


On Fri, Oct 18, 2002 at 11:57:20AM -0400, Robert L. Harris wrote:
> 
> 
> Ok, just put in the 64Gig kernel again, it had a different kernel I
> couldn't find the source for.  The box booted and recognizes all 16Gig
> but we see this now:
> 
> 
> Unable to handle kernel paging request at virtual address 00102004
>  printing eip:
> c01de749
> *pde = 0e546001
> Oops: 0000 2.4.19-rc5aa1 #1 SMP Fri Aug 2 11:37:38 PDT 2002
> CPU:    3
> EIP:    0010:[<c01de749>]    Not tainted
> EFLAGS: 00010282
> eax: 00102000   ebx: 000001b6   ecx: 000001b6   edx: 00000036
> esi: ce153420   edi: 00000000   ebp: ce26b520   esp: ce545f54
> ds: 0018   es: 0018   ss: 0018
> Process apache (pid: 954, stackpage=ce545000)
> Stack: 00000000 00000000 00000000 bfffdbec 00000000 ce55a4c4 c01dd9a8 00007fff 
>        00000380 000001b6 00000003 00000001 ce26b520 bfffdbec c010e9d2 00000000 
>        00000000 00000000 ce545fb4 ce544000 bfffdbe8 00000000 bfffdbec ce544000 
> Call Trace:    [<c01dd9a8>] [<c010e9d2>] [<c0108c40>] [<c0108b57>]
> Code: 8b 50 04 89 c3 89 d1 f0 0f c7 08 75 f1 89 c8 31 d2 89 c2 31 
> 
> 
> Talking to co-workers, this is the reason for changing the kernel.
> Supposedly the memory has been physically troubleshot(?)  in the past
> including swapping out physical dimms.  If the memory is limited to
> <6Gig this doesn't happen.
> 
> Thoughts or should I ask the kernel mailing list?

This is useless without running it through ksymoops, detailed 
in Documentation/oops-tracing.txt and you'll get the same
response from lkml if you send it undecoded.  They may also
ask you to test it on the latest vanilla kernel or with the
latest -aa patch and i'm not sure if -aa1 is the latest or
not.  You may also want to run memtest86, although i'm not
sure how well it would work on a 16GB monster.  A quick look
at the changelogs seem to show success with 6GB.

stephen

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