Re: [crash] Re: Latest brk patchset

[Jeremy Fitzhardinge]

Yinghai Lu wrote:
> Jeremy Fitzhardinge wrote:
>   
> > Ingo Molnar wrote:
> >     
> > > > And the resulting kernel booted fine under qemu with 1Gbyte of
> > > > memory.  I'll try on real hardware a bit later, but it doesn't seem
> > > > like something that should be affected by qemu vs native, unless it
> > > > has something to do with the specific e820 map.
> > > >     
> > > >         
> > > Note that the crash was reproducible and it very clearly went away
> > > when i excluded those commits from tip:master.
> > >   
> > >       
> > Yep, and it looks like the kind of problem those changes might cause. 
> > But I can't reproduce it, and its not obvious to me what's actually
> > going wrong.  Any chance you could bisect the failure down to a specific
> > changeset, and print "start", "max_pfn_mapped" and "tables" where it fails?
> >
> >     
>
> could be max_pfn_mapped change in head_32.S that reduce mapping range to _end only.
>   

Oh, you mean rather than including all low memory?  Possible.  I can 
reproduce it now, so I should be able to sort it out now.

   J
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