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Date:	Fri, 23 Mar 2007 13:14:43 +0100 (CET)
From:	Guennadi Liakhovetski <>
To:	Samuel Ortiz <>
Cc:	"" <>,
	"" <>,
	"" <>,
	Paul Mackerras <>
Subject: Re: [irda-users] [2.6.20-rt8] "Neighbour table overflow."

On Wed, 21 Mar 2007, Guennadi Liakhovetski wrote:

> On Wed, 21 Mar 2007, Samuel Ortiz wrote:
>> I'm quite sure the leak is in the IrDA code rather than in the ppp or
>> ipv4 one, hence the need for full irda debug...

Well, looks like you were wrong, Samuel. Below is a patch that fixes ONE 
sk_buff leak (maintainer added to cc: hi, Paul:-)). Still investigating if 
there are more there.

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

Don't leak an sk_buff on interface destruction.

Signed-off-by: G. Liakhovetski <>

--- 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);

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