Re: Problem with Gdt driver under smp?

[Doug Ledford <dledford@redhat.com>]

On Thu, Oct 31, 2002 at 04:37:07PM +0800, Pedro Pla wrote:
> Hello,
> 
> I was wondering if there is any known problem with the Gdt driver under 
> an smp machine, I have a dual p3 scb2 motherboard, with 1-2GB ram, an 
> scrmr intel 0 channel raid controller and 3 hotswap disks. Initially I 
> thought it was a memory problem since the kernel was complaining at 
> mem_alloc:89, however as long as the memory I move is not read from the 
> disk (through a kernel compile, or a dd if=/dev/sda) then it seems to 
> work fine. A kernel compiled with no smp works fine as well. I've tried 
> kernels from the 2.2.22 to the 2.4.17-2.4.20-pre10-ac with pre11 patches 
> applied on top.
> 
> The symptoms are segmentation faults, signal 11's, and occasionally 
> kernel oops at mem_alloc:89, I have also seen several kernel oops in 
> journal.c when I tried using ext3, I disactivated that but the faults 
> remained. It has also froze once and given a kernel oops while loading 
> the scsi driver at boot, and another time it simply rebooted the machine 
> when loading the driver. Any ideas? For now I will work with only one 
> cpu and smp disactivated since that gives no problems at all, but I 
> would like to be able to unleash the full power of these machines.

Sounds like typical bad RAM problems.  Run a memory test on your RAM.

-- 
  Doug Ledford <dledford@redhat.com>     919-754-3700 x44233
         Red Hat, Inc. 
         1801 Varsity Dr.
         Raleigh, NC 27606