Re: [discuss] Memory performance problems on Tyan VX50

Christoph Lameter
2006-02-01T17:03:15Z

On Wed, 1 Feb 2006, Andi Kleen wrote:

> Looks like a bug. There were changes both in the page allocator and in
> mempolicy in 2.6.16rc, so it might be related to that.
> What does this wheremem program do exactly?
> And what does numastat --hardware say on the machine?
>
> Either it's generally broken in page alloc or mempolicy somehow managed to pass in
> a NULL zonelist.

The failure is in __rmqueue. AFAIK There is no influence of mempolicy on
that one. Could we get an accurate pointer to the statement that is
causing the NULL deref?