Re: 2.6.17-rc5-mm1

[Andrew Morton]

"Martin J. Bligh" <mbligh@xxxxxxxxxx> wrote:
>
> Andrew Morton wrote:
> > Martin Bligh <mbligh@xxxxxxxxxx> wrote:
> > 
> >>The x86_65 panic in LTP has changed a bit. Looks more useful now.
> >>Possibly just unrelated new stuff. Possibly we got lucky.
> > 
> > What are you doing to make this happen?
> 
> runalltests on LTP
> 

We have to get to the bottom of this - there's a shadow over about 500
patches and we don't know which.

iirc I tried to reproduce this a couple of weeks back and failed.

Are you able to narrow it down to a particular LTP test?  It was mtest01 or
something like that?  Perhaps we can identify a particular command line
which triggers the fault in a standalone fashion?

And why can't I make it happen?  Perhaps it's a memory initialisation
problem, and it only happens to hit in that stage of LTP because that's
when you started doing page reclaim, or something?  Perhaps just
try putting a heap of memory pressure on the machine, see what
that does?

Being unable to reproduce it and not having a theory to go on leaves us
kinda stuck.  Help, please?
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