oopses on 2.2.19 under load, mylex raid

[John Madden]

I'm suspecting this to be a hardware issue, but I can't pin it down, and 
I'm hoping someone here might be able to help.  The system's a new 
built-from-scratch, so I guess the problem could be any of the components. 
 The system oopses *hard* under heavy load (make -j64 bzImage) pretty 
consistently.

Hardware: 512mb PC133, single pIII/800EB on a dual Tyan S2507, Mylex 170LP 
(DAC960) RAID controller on 4 18gig disks.  (Patched with Zubkoff's DAC960 
patch, version 2.2.10 for kernel 2.2.18)

I've swapped the RAM around and with some from a known-good system and I 
still get the crashes.  They're generally so hard that I can't scroll back 
to copy anything from the screen.  What I do get are lines like this one: 

[<c010f73c>] [<c012798e>] [c011c1cc>]...

repeating for at least a screen full, then:

Code: 39 73 74 75 2d c7 43 50 11 00 00 00 ff 83 dc 04 00 00 a1 b0

One oops that wasn't hard enough to take out the entire system looked like 
this: 

kmem_free: Bad obj addr (objp=dbad0220, name=vm_area_struct)
Unable to handle kernel NULL pointer dereference at virtual address 
00000000
current->tss.cr3=00101000, %%crs = 00101000
*pde = 00000000

Any ideas? 

Thanks,
  John

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# John Madden  [e-mail] ICQ: 2EB9EA
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