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SubjectRe: thread groups bug?

On Thu, 28 Feb 2002, David Howells wrote:
> Except that the execve() _can_ (a) change the TGID and (b) result in two
> effective thread groups of the same TGID as far as the kernel is concerned.

You're right. I did that for security reasons - making sure that nobody
can execve a suid application and then keep on sending signals to it under
the auspices of thread groups. I'd forgotten about that thing.

Maybe killing the other threads on execve _is_ the right thing after all,
if that also gives us POSIX behaviour.

Who actually maintains the pthread library? I don't think they use
CLONE_THREAD at all yet, right?


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