linux-kernel - Re: [git patches] net driver fixes

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Message-ID: <Pine.LNX.4.63.0703300922490.534@pcgl.dsa-ac.de>
Date:	Fri, 30 Mar 2007 09:32:17 +0200 (CEST)
From:	Guennadi Liakhovetski <gl@...-ac.de>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	Guennadi Liakhovetski <g.liakhovetski@....de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	netdev@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Samuel Ortiz <samuel@...tiz.org>
Subject: Re: [git patches] net driver fixes

On Thu, 29 Mar 2007, Jeff Garzik wrote:

> Guennadi Liakhovetski wrote:
>> Jeff, might be worth getting the sk_buff leak fix in ppp from 
>> http://www.spinics.net/lists/netdev/msg27706.html in 2.6.21 too?
>> 
>> Don't know how important it is for stable. It was present in 2.6.18 too.
>
> Can you resend the patch to me, please?
>
> Easier for the system to apply than the URL...

Sure, attached below. I think, though, this patch is already in someone's 
tree. Andrew has applied it to -mm under the name

ppp-dont-leak-an-sk_buff-on-interface-destruction.patch

but then dropped with the reasoning "This patch was dropped because it was 
merged into mainline or a subsystem tree". So, maybe it is now in Samuel's 
IrDA tree. Samuel?So, maybe all you have to do is to pull it from his 
tree.

Thanks
Guennadi
---------------------------------
Guennadi Liakhovetski, Ph.D.
DSA Daten- und Systemtechnik GmbH
Pascalstr. 28
D-52076 Aachen
Germany

Don't leak an sk_buff on interface destruction.

Signed-off-by: G. Liakhovetski <gl@...-ac.de>

--- a/drivers/net/ppp_generic.c	2007-03-23 13:04:04.000000000 +0100
+++ b/drivers/net/ppp_generic.c	2007-03-23 13:05:29.000000000 +0100
@@ -2544,6 +2544,9 @@
  	ppp->active_filter = NULL;
  #endif /* CONFIG_PPP_FILTER */

+	if (ppp->xmit_pending)
+		kfree_skb(ppp->xmit_pending);
+
  	kfree(ppp);
  }

-
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