netdev - Re: [PATCH] ipv4: fix a race in ip4_datagram_release

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Message-ID: <1402544609.3645.473.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Wed, 11 Jun 2014 20:43:29 -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 Wed, 2014-06-11 at 18:55 -0700, dormando wrote:

> I sent the udpkill utility in an off-list mail (in case that got binned by
> anyone).
> 
> Just threw this patch on top of the other two, on 3.10.42. udpkill's been
> running for an hour without fault. I've just put traffic back onto the
> machine am leaving udpkill enabled for a while longer.
> 
> So, this is an improvement :)

Nice. I suspect regression came with 3.6 ip route cache removal, but I
am lazy to point the exact commit.


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