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Date:	Sun, 23 May 2010 23:11:52 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	hadi@...erus.ca, kaber@...sh.net, blp@...ira.com,
	netdev@...r.kernel.org
Subject: Re: [PATCH] net_sched: Fix qdisc_notify()

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Sun, 23 May 2010 08:37:44 +0200

> [PATCH] net_sched: Fix qdisc_notify()
> 
> Ben Pfaff reported a kernel oops and provided a test program to
> reproduce it.
> 
> https://kerneltrap.org/mailarchive/linux-netdev/2010/5/21/6277805
> 
> tc_fill_qdisc() should not be called for builtin qdisc, or it
> dereference a NULL pointer to get device ifindex.
> 
> Fix is to always use tc_qdisc_dump_ignore() before calling
> tc_fill_qdisc().
> 
> Reported-by: Ben Pfaff <blp@...ira.com>
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>

Applied and queued up for -stable.
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