Re: [PATCH 1/1] tty: release_one_tty() forgets to put pids

[Oleg Nesterov <oleg@redhat.com>]

On 04/02, Oleg Nesterov wrote:
>
> release_one_tty(tty) can be called when tty still has a reference
> to pgrp/session. In this case we leak the pid.
>
> The patch needs the ack from someone who understand tty magic.
>
> Signed-off-by: Oleg Nesterov <oleg@redhat.com>

I am sorry, I forgot it needs

	Reported-by: Catalin Marinas <catalin.marinas@arm.com>
	Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>

> ---
> 
>  drivers/char/tty_io.c |    2 ++
>  1 file changed, 2 insertions(+)
> 
> --- TTT/drivers/char/tty_io.c~TTY_PID_LEAK	2010-03-17 16:00:59.000000000 +0100
> +++ TTT/drivers/char/tty_io.c	2010-04-02 17:23:07.000000000 +0200
> @@ -1423,6 +1423,8 @@ static void release_one_tty(struct work_
>  	list_del_init(&tty->tty_files);
>  	file_list_unlock();
>  
> +	put_pid(tty->pgrp);
> +	put_pid(tty->session);
>  	free_tty_struct(tty);
>  }
>