linux-kernel - Re: [PATCH] selinux_bprm_committed_creds: use __wake_up

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Message-ID: <alpine.LRH.2.00.0907031939040.17071@tundra.namei.org>
Date:	Fri, 3 Jul 2009 19:39:22 +1000 (EST)
From:	James Morris <jmorris@...ei.org>
To:	Oleg Nesterov <oleg@...hat.com>
cc:	Andrew Morton <akpm@...ux-foundation.org>, Valdis.Kletnieks@...edu,
	linux-kernel@...r.kernel.org, David Howells <dhowells@...hat.com>,
	Roland McGrath <roland@...hat.com>
Subject: Re: [PATCH] selinux_bprm_committed_creds: use __wake_up_parent()

On Fri, 3 Jul 2009, Oleg Nesterov wrote:

> (depends on ptrace-__ptrace_detach-do-__wake_up_parent-if-we-reap-the-tracee.patch
>  which exports __wake_up_parent)
> 
> Spotted by Valdis.Kletnieks@...edu.
> 
> selinux_bprm_committed_creds() should not play with ->wait_chldexit, now
> that __wake_up_parent() is exported change the code to use this helper.
> 
> Signed-off-by: Oleg Nesterov <oleg@...hat.com>


Acked-by: James Morris <jmorris@...ei.org>

> 
> --- WAIT/security/selinux/hooks.c~SEL_WAKE_PARENT	2009-06-16 17:01:42.000000000 +0200
> +++ WAIT/security/selinux/hooks.c	2009-07-03 11:15:08.000000000 +0200
> @@ -2404,7 +2404,7 @@ static void selinux_bprm_committed_creds
>  	/* Wake up the parent if it is waiting so that it can recheck
>  	 * wait permission to the new task SID. */
>  	read_lock(&tasklist_lock);
> -	wake_up_interruptible(&current->real_parent->signal->wait_chldexit);
> +	__wake_up_parent(current, current->real_parent);
>  	read_unlock(&tasklist_lock);
>  }
>  
> 

-- 
James Morris
<jmorris@...ei.org>
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