Re: [BUG] ptraced process waiting on syscall may return kernelinternal errnos

[Benjamin Herrenschmidt]

On Wed, 2007-06-06 at 08:35 -0700, Linus Torvalds wrote:
> 
> So I think that the *right* place to clear TIF_SIGPENDING is actually in 
> "get_signal_to_deliver()", because that function is called _only_ by the 
> actual per-architecture "I'm going to deliver a signal now".

That was my initial idea but it has an issue with kernel
threads :-( There are in kernel thingies that use signals to a certain
extend and rely on being able to dequeue and/or clear sigpending (or
else they just loop instead of waiting in various loops).

A bit of a can of worms if you ask me.

Ben.


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