Process map and fork problems

Wed Apr 20 10:46:00 GMT 2016

Achim Gratz <Stromeko <at> NexGo.DE> writes:
> I'm chasing a problem on some 32bit Windows installs that supposedly
> happened after one of the Windows updates (and probably other software
> updates) in the last few months (the affected users were unable to pin it
> down further unfortunately). It's obviously caused by two heap sections in
> the process map that are smack dab in the middle of the address range used
> by rebase:
>> 20000000-200A0000 rw-p 00000000 0000:0000 0 [heap]
> 200A0000-38000000 ===p 000A0000 0000:0000 0 [heap]
>> These do not exist on 32bit Cygwin installs on 64bit Windows installations,
> so I couldn't see these problems on my test machine.

On the 64bit Windows installations two eerily similar heap sections appear
much higher in the process image:
80000000-80070000 rw-p 00000000 0000:0000 0 [heap]
80070000-98000000 ===p 00070000 0000:0000 0 [heap]
Hm.... why would something like that move from 2GB down to 0.5GB?
Regards,
Achim.
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