netdev - Re: 3.6-rt: inet_sk_rx_dst

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Message-ID: <1367618183.7373.22.camel@gandalf.local.home>
Date:	Fri, 03 May 2013 17:56:23 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Mike Galbraith <bitbucket@...ine.de>,
	David Miller <davem@...emloft.net>,
	RT <linux-rt-users@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>
Subject: Re: 3.6-rt: inet_sk_rx_dst_set() network splat

On Fri, 2013-05-03 at 11:13 -0400, Steven Rostedt wrote:
> On Fri, 2013-05-03 at 07:03 -0700, Eric Dumazet wrote:
> > On Fri, 2013-05-03 at 10:20 +0200, Sebastian Andrzej Siewior wrote:
> > > * Steven Rostedt | 2013-05-01 20:49:39 [-0400]:
> > > 
> > > >Is this something going into the stable tree, or does it not affect 3.0,
> > > >3.2, 3.4 or 3.6?
> > > 
> > > Mike Galbraith reported it against v3.6 so I would say that this is one
> > > candidate. I just booted v3.4.41-rt55 and it runs for 20 minutes now
> > > without any issues. Maybe it crashes after I sent the email but I hope
> > > it does not :)
> > 
> > Thats because the particular way to trigger the bug was to use the IP
> > early demux, and it was added in 3.5
> 
> Is it OK to keep it? I pulled the patch into 3.2-rt and 3.4-rt. I can
> remove it if you think it's not necessary and will cause a slight
> performance penalty.

I took it out of 3.2-rt as I needed to add a patch and rerun my tests.
But I'll leave it in 3.4-rt (unless you think I shoudn't) just so I
don't need to rerun the tests. I'm only posting a pre-release anyway.

Thanks,

-- Steve


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