Re: [x86] Access off the bottom of stack causes a segfault?

[Eric W. Biederman]

Chris Lattner <sabre@xxxxxxxxxx> writes:

> My compiler is generating accesses off the bottom of the stack (address
> below %esp).  Is there some funny kernel interaction that I should be
> aware of with this?  I'm periodically getting segfaults.

Beyond the signal thing.  You are using a demand grown vma for the
stack, and using it past where it has grown.  If you grow the vma
deliberately you can use more of it.  But using more area than
you have allocated for the stack is most certainly a bug.


Eric
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