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SubjectRe: [PATCH 1/5] signal(x86_32): Improve the signal stack overflow check
Ingo Molnar writes:
>
> * Shi Weihua <shiwh@cn.fujitsu.com> wrote:
>
> > We need to check for stack overflow only when the signal is on stack.
> > So we can improve the patch "http://lkml.org/lkml/2007/11/27/101" as
> > following.
>
> thanks, applied.

These patches change the behaviour of programs that longjmp out of a
signal handler on an alternate stack, don't they?

I'm interested to know what gave you confidence that changing that
behaviour won't break existing working programs.

Paul.


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