Re: [RFC] [PATCH] selective signal ptracing

[Oleg Nesterov]

John Blackwood wrote:
>
> By default all signals are ptraced as before. However, a debugger
> may now modify the set of per-task ptraced signals, where only the
> signals in this ptrace signal mask will be ptraced.

I must admit, I agree with Roland...

> +void ptrace_update_traced_signals(struct task_struct *child,
> +							sigset_t *new_smaskp)
> +{
> [...snip...]
> +
> +		spin_lock_irqsave(&child->sighand->siglock, flags);
> +
> +		if (child->sighand == NULL) {

How so?

Oleg.

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