Re: kernel BUG at kernel/exit.c:792!

[Linus Torvalds]

On Wed, 3 Dec 2003, Ingo Molnar wrote:
>
> On Wed, 3 Dec 2003, Manfred Spraul wrote:
>
> > It's wrong, because next_thread() relies on
> >
> >     task->pids[PIDTYPE_TGID].pid_chain.next
> >
> > That pointer is not valid after detach_pid(task, PIDTYPE_TGID), and
> > that's called within __unhash_process.  Thus next_thread() fails if it's
> > called on a dead task. Srivatsa's second patch is the right change: If
> > pid_alive() is wrong, then break from the loop without calling
> > next_thread().
>
> yes. And for thread groups this can only happen for the thread group
> leader if all 'child' threads have exited.

Ok, color me convinced. Will apply,

		Linus
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