[coreboot] [GSoC] Re: malloc.c problems of option rom

Peter Stuge peter at stuge.se
Sun Aug 2 19:42:40 CEST 2009

ron minnich wrote:
> > alloc 82  length:0x238,ptr=0x3077e0
> > alloc 83 memory begin:0x77e0 end:0x577e0, hstart:0x300000
> > set up error,*ptr=0xa2c0e2cc
> > memory allocator panic!!! the size=0xc0e2cc. header=0xa2c0e2cc
> You're trying to allocate 1.25 Mbytes of memory?

I think that's some kind of corruption.

0x238 is the original allocation length. We looked into this a little
on IRC and the two values ptr and hstart (lines 82/83 above) should
be the same. There's an assignment ptr=hstart right before the prints
in the source Jason sent. It's possible that some source changes may
have been left out in the running build - I don't know exactly what's
going on.

I suggested reverting back to a version of the memory allocator which
has a known behavior, even if it is known to fail I think it will be
easier to debug and fix than this problem.


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