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Date: Sun, 29 Jun 2014 23:38:12 -0700 From: Eric Dumazet <eric.dumazet@...il.com> To: dormando <dormando@...ia.net> Cc: Alexey Preobrazhensky <preobr@...gle.com>, Steffen Klassert <steffen.klassert@...unet.com>, David Miller <davem@...emloft.net>, paulmck@...ux.vnet.ibm.com, netdev@...r.kernel.org, Kostya Serebryany <kcc@...gle.com>, Dmitry Vyukov <dvyukov@...gle.com>, Lars Bull <larsbull@...gle.com>, Eric Dumazet <edumazet@...gle.com>, Bruce Curtis <brutus@...gle.com>, Maciej Żenczykowski <maze@...gle.com>, Alexei Starovoitov <alexei.starovoitov@...il.com> Subject: Re: [PATCH] ipv4: fix a race in ip4_datagram_release_cb() On Sat, 2014-06-28 at 17:25 -0700, dormando wrote: > 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). I have this patch in my queue. I have to submit it officially before it can be merged... David seems quite busy these days anyway. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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