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From: Arnd Bergmann <arnd@arndb.de>
To: Julia Lawall <julia@diku.dk>
Cc: kernel-janitors@vger.kernel.org,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Grant Likely <grant.likely@secretlab.ca>,
	linuxppc-dev@lists.ozlabs.org, cbe-oss-dev@lists.ozlabs.org,
	linux-kernel@vger.kernel.org,
	devicetree-discuss@lists.ozlabs.org
Subject: Re: [PATCH 1/2] arch/powerpc/platforms/cell/iommu.c: add missing of_node_put
Date: Mon, 29 Aug 2011 11:26:49 +0000	[thread overview]
Message-ID: <201108291326.49561.arnd@arndb.de> (raw)
In-Reply-To: <1313943001-12884-1-git-send-email-julia@diku.dk>

On Sunday 21 August 2011, Julia Lawall wrote:
> From: Julia Lawall <julia@diku.dk>
> 
> np is initialized to the result of calling a function that calls
> of_node_get, so of_node_put should be called before the pointer is dropped.
> 
> The semantic match that finds this problem is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> expression e,e1,e2;
> @@
> 
> * e = \(of_find_node_by_type\|of_find_node_by_name\)(...)
>   ... when != of_node_put(e)
>       when != true e = NULL
>       when != e2 = e
>   e = e1
> // </smpl>
> 
> Signed-off-by: Julia Lawall <julia@diku.dk>
> 
Acked-by: Arnd Bergmann <arnd@arndb.de>

WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: Julia Lawall <julia@diku.dk>
Cc: cbe-oss-dev@lists.ozlabs.org,
	devicetree-discuss@lists.ozlabs.org,
	kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org,
	Paul Mackerras <paulus@samba.org>,
	linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 1/2] arch/powerpc/platforms/cell/iommu.c: add missing of_node_put
Date: Mon, 29 Aug 2011 13:26:49 +0200	[thread overview]
Message-ID: <201108291326.49561.arnd@arndb.de> (raw)
In-Reply-To: <1313943001-12884-1-git-send-email-julia@diku.dk>

On Sunday 21 August 2011, Julia Lawall wrote:
> From: Julia Lawall <julia@diku.dk>
> 
> np is initialized to the result of calling a function that calls
> of_node_get, so of_node_put should be called before the pointer is dropped.
> 
> The semantic match that finds this problem is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> expression e,e1,e2;
> @@
> 
> * e = \(of_find_node_by_type\|of_find_node_by_name\)(...)
>   ... when != of_node_put(e)
>       when != true e == NULL
>       when != e2 = e
>   e = e1
> // </smpl>
> 
> Signed-off-by: Julia Lawall <julia@diku.dk>
> 
Acked-by: Arnd Bergmann <arnd@arndb.de>

WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: Julia Lawall <julia@diku.dk>
Cc: kernel-janitors@vger.kernel.org,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Grant Likely <grant.likely@secretlab.ca>,
	linuxppc-dev@lists.ozlabs.org, cbe-oss-dev@lists.ozlabs.org,
	linux-kernel@vger.kernel.org,
	devicetree-discuss@lists.ozlabs.org
Subject: Re: [PATCH 1/2] arch/powerpc/platforms/cell/iommu.c: add missing of_node_put
Date: Mon, 29 Aug 2011 13:26:49 +0200	[thread overview]
Message-ID: <201108291326.49561.arnd@arndb.de> (raw)
In-Reply-To: <1313943001-12884-1-git-send-email-julia@diku.dk>

On Sunday 21 August 2011, Julia Lawall wrote:
> From: Julia Lawall <julia@diku.dk>
> 
> np is initialized to the result of calling a function that calls
> of_node_get, so of_node_put should be called before the pointer is dropped.
> 
> The semantic match that finds this problem is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> expression e,e1,e2;
> @@
> 
> * e = \(of_find_node_by_type\|of_find_node_by_name\)(...)
>   ... when != of_node_put(e)
>       when != true e == NULL
>       when != e2 = e
>   e = e1
> // </smpl>
> 
> Signed-off-by: Julia Lawall <julia@diku.dk>
> 
Acked-by: Arnd Bergmann <arnd@arndb.de>

  reply	other threads:[~2011-08-29 11:26 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-21 16:10 [PATCH 1/2] arch/powerpc/platforms/cell/iommu.c: add missing of_node_put Julia Lawall
2011-08-21 16:10 ` Julia Lawall
2011-08-21 16:10 ` Julia Lawall
2011-08-29 11:26 ` Arnd Bergmann [this message]
2011-08-29 11:26   ` Arnd Bergmann
2011-08-29 11:26   ` Arnd Bergmann

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