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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?

    Linus

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