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Message-Id: <20120125.214552.52611932413304658.davem@davemloft.net> Date: Wed, 25 Jan 2012 21:45:52 -0500 (EST) From: David Miller <davem@...emloft.net> To: eric.dumazet@...il.com Cc: jchapman@...alix.com, netdev@...r.kernel.org, alex@....org, ben@...adent.org.uk Subject: Re: [PATCH 1/1] l2tp: l2tp_ip - fix possible oops on packet receive From: Eric Dumazet <eric.dumazet@...il.com> Date: Wed, 25 Jan 2012 14:06:57 +0100 > Le mercredi 25 janvier 2012 à 12:39 +0000, James Chapman a écrit : >> When a packet is received on an L2TP IP socket (L2TPv3 IP link >> encapsulation), the l2tpip socket's backlog_rcv function calls >> xfrm4_policy_check(). This is not necessary, since it was called >> before the skb was added to the backlog. With CONFIG_NET_NS enabled, >> xfrm4_policy_check() will oops if skb->dev is null, so this trivial >> patch removes the call. >> >> This bug has always been present, but only when CONFIG_NET_NS is >> enabled does it cause problems. Most users are probably using UDP >> encapsulation for L2TP, hence the problem has only recently >> surfaced. >> > ... >> Signed-off-by: James Chapman <jchapman@...alix.com> >> >> --- > > Acked-by: Eric Dumazet <eric.dumazet@...il.com> > Cc: alex <alex@....org> > Cc: Ben Hutchings <ben@...adent.org.uk> Applied and queued up for -stable, thanks. -- 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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