Re: [PATCH 01/14] signal: Generalize posixtimer_queue_sigqueue into enqueue_signal

[Oleg Nesterov <oleg@redhat.com>]

On 07/03, Eric W. Biederman wrote:
>
> +static void enqueue_signal(struct task_struct *t, enum pid_type type,
> +			   int sig, struct sigqueue *q)
> +{
> +	struct signal_struct *signal = t->signal;
> +	struct sigpending *pending = (type != PIDTYPE_PID) ?
> +		&signal->shared_pending : &t->pending;
> +
> +	signalfd_notify(t, sig);
> +	if (q) {
> +		list_add_tail(&q->list, &pending->list);
> +	}
> +	sigaddset(&pending->signal, sig);
> +	complete_signal(sig, t, type);
> +}

Hmm... __send_signal_locked() doesn't initialize the local "struct sigqueue *q", and

	if ((sig == SIGKILL) || (t->flags & PF_KTHREAD))
		goto out_set;

will pass it to enqueue_signal().

Oleg.