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Date:	Sat, 28 Jun 2014 17:25:38 -0700 (PDT)
From:	dormando <>
To:	Eric Dumazet <>
cc:	Alexey Preobrazhensky <>,
	Steffen Klassert <>,
	David Miller <>,,, Kostya Serebryany <>,
	Dmitry Vyukov <>,
	Lars Bull <>,
	Eric Dumazet <>,
	Bruce Curtis <>,
	Maciej ┼╗enczykowski <>,
	Alexei Starovoitov <>
Subject: Re: [PATCH] ipv4: fix a race in ip4_datagram_release_cb()

On Tue, 10 Jun 2014, Eric Dumazet wrote:

> On Tue, 2014-06-10 at 18:12 -0700, Eric Dumazet wrote:
> >
> > For the curious, another problem is in ipv4_sk_update_pmtu()
> >
> > This can be called on UDP sockets, but from softirq context.
> >
> > We cannot use sk_dst_lock because this lock is not softirq safe.
> >
> > I guess we should use xchg() for sk_dst_set() and sk_dst_reset()
> This would be something like this untested patch :

I see this didn't get queued for stable, should it be dropped due to the
later patch? (which did get queued for stable).
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