linux-kernel - Re: 2.6.24 regression: reference count leak in PPPoE

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Message-Id: <20080120.160833.166998420.davem@davemloft.net>
Date:	Sun, 20 Jan 2008 16:08:33 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	mingo@...e.hu
Cc:	ak@...e.de, netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	torvalds@...ux-foundation.org
Subject: Re: 2.6.24 regression: reference count leak in PPPoE

From: Ingo Molnar <mingo@...e.hu>
Date: Sun, 20 Jan 2008 21:01:09 +0100

> 
> * Andi Kleen <ak@...e.de> wrote:
> 
> > My workstation running 2.6.24-rc8 just hung during shutdown with an 
> > endless (or rather I didn't wait more than a few minutes) loop of
> > 
> > unregister_netdev: waiting for ppp-device to become free. Usage count 
> > = 1
> > 
> > ppp-device was an active PPPoE device.
> > 
> > No more information currently.
> 
> i've seen such problems (locked up box with endless loop of usage count 
> == 1) with pppoe in the past, and it seemed to be related to dynamic 
> IPs. (i saw that well before 2.6.24 - reported it once to davem)

No, this is a different bug Andi is seeing and it was
recently introduced:

	http://bugzilla.kernel.org/show_bug.cgi?id=9778
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