Strange memory allocation error in 2.2.11

[Roman Levenstein <romix@geocities.com>]

Hi,

I've a very strange error on my RedHat 5.2 with 2.2.11 kernel.

I'm writing a program , which actively uses garbage collection,
implemented in
a separate library(it scans stack, heap, etc. and relies on the system,
when trying to determine start and end addresses of these memory areas ,
but doesn't contain any assembler low-level code).
 
It works just fine for kernels <=2.2.9 , but since I've installed 2.2.11
garbage collector behaves very strange:
sometimes it crashes , sometimes it loops forever , sometimes it works
Ok.

I think there's a problem with MM in this new kernel. To be sure , I
reloaded my 
computer with the old (2.2.3) version of kernel and everything works
correctly.

Are there any changes in MM for 2.2.11 , which require recompilation of
user programs? 

What other reasons can lead to such effect?

Thanks in advance,
 Roman Levenstein
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