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To: vic <zandy@cs.wisc.edu>
Cc: marcelo@conectiva.com.br, linux-kernel@vger.kernel.org,
        torvalds@transmeta.com, alan@lxorguk.ukuu.org.uk
Subject: Re: [PATCH] ptrace on stopped processes (2.4)
In-Reply-To: <m3adwc9woz.fsf@localhost.localdomain>
From: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Date: Sat, 22 Dec 2001 12:56:01 +0900
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vic <zandy@cs.wisc.edu> writes:

> --- linux-2.4.16/kernel/ptrace.c	Wed Nov 21 16:43:01 2001
> +++ linux-2.4.16.1/kernel/ptrace.c	Fri Dec 21 10:42:44 2001
> @@ -89,8 +89,10 @@
>  		SET_LINKS(task);
>  	}
>  	write_unlock_irq(&tasklist_lock);
> -
> -	send_sig(SIGSTOP, task, 1);
> +	if (task->state != TASK_STOPPED)
> +		send_sig(SIGSTOP, task, 1);
> +	else
> +		task->exit_code = SIGSTOP;
>  	return 0;
>  
>  bad:

It seems that trace is started in the place different from
usual. Then, I think PTRACE_KILL doesn't work.

If it need, I think it should wake up a task.
-- 
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
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