Re: futex strangeness in 2.6.23-mm1/UML

From: Miklos Szeredi
Date: Tue Oct 23 2007 - 06:24:08 EST


> >> I guess we can debug it in the old-fashioned ways. The first of which is
> >> to palm the problem off on Pavel ;)
>
> I look at the 2.6.23-mm1 and see that there's one hunk lost. This
> is the one Oleg re-sent some days ago (the mail thread subject was
> 2.6.23-mm1 thread exit_group issue). Here it is (sent 13 oct 2007):
>
> --- kernel/fork.c~ 2007-10-13 15:41:35.000000000 +0400
> +++ kernel/fork.c 2007-10-13 15:41:41.000000000 +0400
> @@ -1443,6 +1443,9 @@ long do_fork(unsigned long clone_flags,
> task_pid_nr_ns(p, current->nsproxy->pid_ns) :
> task_pid_vnr(p);
>
> + if (clone_flags & CLONE_PARENT_SETTID)
> + put_user(nr, parent_tidptr);
> +
> if (clone_flags & CLONE_VFORK) {
> p->vfork_done = &vfork;
> init_completion(&vfork);
>
> Please, try with this patch.

Thanks. This patch does indeed seem to solve the problem.

Miklos
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