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From: Eric Dumazet <eric.dumazet@gmail.com>
To: Mike Galbraith <bitbucket@online.de>
Cc: David Miller <davem@davemloft.net>,
	RT <linux-rt-users@vger.kernel.org>,
	netdev <netdev@vger.kernel.org>
Subject: Re: 3.6-rt: inet_sk_rx_dst_set() network splat
Date: Wed, 24 Apr 2013 22:03:53 -0700	[thread overview]
Message-ID: <1366866233.8964.128.camel@edumazet-glaptop> (raw)
In-Reply-To: <1366865490.4595.22.camel@marge.simpson.net>

On Thu, 2013-04-25 at 06:51 +0200, Mike Galbraith wrote:

> Thanks for the fix.  I'll apply it and beat on the box some more (g.p.).
> Gripe only happened the one time during long workout day.

To force it to happen, you need to invalidate the cached dst in socket.

So presumably doing in the background some "ip ro ..." commands to
add/delete routes.

Then prequeue happens if you use a program blocking on receive (not
using poll()/select()/epoll())




  reply	other threads:[~2013-04-25  5:03 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-24  6:50 3.6-rt: inet_sk_rx_dst_set() network splat Mike Galbraith
2013-04-25  1:34 ` Eric Dumazet
2013-04-25  4:36   ` David Miller
2013-04-25  4:51   ` Mike Galbraith
2013-04-25  5:03     ` Eric Dumazet [this message]
2013-04-26 10:50       ` Sebastian Andrzej Siewior
2013-04-26 14:14         ` Eric Dumazet
2013-05-02  0:49         ` Steven Rostedt
2013-05-03  8:20           ` Sebastian Andrzej Siewior
2013-05-03 14:03             ` Eric Dumazet
2013-05-03 15:13               ` Steven Rostedt
2013-05-03 21:56                 ` Steven Rostedt
2013-05-03 21:58                 ` Eric Dumazet

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