Re: situation with signals

[Arnd Bergmann]

On Friday 24 September 2010, Al Viro wrote:
>         There are several interesting issues in arch/*/*/*signal* (besides
> shoggoths starting to show up when one reads that code) and I'd been crawling
> through that area for the last few weeks.  Here are more or less common
> issues; there are really arch-specific bugs (e.g. roothole on frv that
> used to allow reading kernel memory by setting the right sa_handler), but
> that's a separate story.

I still plan to make a counterpart to the asm-generic headers with an
example architecture that new architectures can copy from. Signal handling
is one of the areas that I have very limited understanding of. Did you
encounter any architecture that basically gets signal handling right and that
can serve as a positive example to others?

arch/tile/kernel/signal.c was the last one that got merged and I tried
to direct the maintainer in the right direction as much as I could, but
there are a lot of things I didn't know about.

	Arnd
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