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Message-Id: <20141030.195947.399658939004489177.davem@davemloft.net> Date: Thu, 30 Oct 2014 19:59:47 -0400 (EDT) From: David Miller <davem@...emloft.net> To: eric.dumazet@...il.com Cc: netdev@...r.kernel.org, ncardwell@...gle.com Subject: Re: [PATCH] net: skb_fclone_busy() needs to detect orphaned skb From: Eric Dumazet <eric.dumazet@...il.com> Date: Thu, 30 Oct 2014 10:32:34 -0700 > From: Eric Dumazet <edumazet@...gle.com> > > Some drivers are unable to perform TX completions in a bound time. > They instead call skb_orphan() > > Problem is skb_fclone_busy() has to detect this case, otherwise > we block TCP retransmits and can freeze unlucky tcp sessions on > mostly idle hosts. > > Signed-off-by: Eric Dumazet <edumazet@...gle.com> > Fixes: 1f3279ae0c13 ("tcp: avoid retransmits of TCP packets hanging in host queues") Applied, and queued up for -stable, thanks Eric. > This problem is known to hurt users of linux-3.16 kernels used by guests kernels. > David, I can provide backports if you want. Since 3.16 is no longer active, I'll only need to put this into 3.17-stable which I should be able to handle on my own. But thanks for offering, sometimes difficult backports take up a lot of time. -- 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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