Re: x86-64 bad pmds in 2.6.11.6 II

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On Tue, May 10, 2005 at 12:59:38PM -0400, Dave Jones wrote:
> On Tue, May 10, 2005 at 06:46:49PM +0200, Andi Kleen wrote:
>  > On Tue, May 10, 2005 at 12:38:51PM -0400, Dave Jones wrote:
>  > > On Tue, May 10, 2005 at 05:36:54AM -0400, Christopher Warner wrote:
>  > >  > 2.6.11.5 kernel,
>  > >  > Tyan S2882/dual AMD 246 opterons
>  > >  > sh:18983: mm/memory.c:99: bad pmd ffff810005974cc8(00007ffffffffe46). 
>  > >  > sh:18983: mm/memory.c:99: bad pmd ffff810005974cd0(00007ffffffffe47).
>  > > 
>  > > That's the 3rd or 4th time I've seen this reported on this hardware.
>  > > It's not exclusive to it, but it does seem more susceptible
>  > > for some reason. Spooky.
>  > 
>  > It seems to be clear now that it is hardware independent.
>  > 
>  > I actually got it once now too, but only after 24+h stress test :/
>  > 
>  > I have a better debugging patch now that I will be testing soon,
>  > hopefully that turns something up.
> 
> Ok, I'm respinning the Fedora update kernel today for other
> reasons, if you have that patch in time, I'll toss it in too.

The patch has considerable overhead, probably not  good idea
for a production rpm.

-Andi

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