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Message-ID: <1333011120.2325.354.camel@edumazet-glaptop> Date: Thu, 29 Mar 2012 10:52:00 +0200 From: Eric Dumazet <eric.dumazet@...il.com> To: "Peter Huang (Peng)" <peter.huangpeng@...wei.com> Cc: linux-kernel@...r.kernel.org, harry.majun@...wei.com, zhoukang7@...wei.com, 'netdev' <netdev@...r.kernel.org> Subject: Re: 答复: [PATCH] set fake_rtable's dst to NULL to avoid kernel Oops. On Thu, 2012-03-29 at 14:40 +0800, Peter Huang (Peng) wrote: > We already check current kernel-3.3, it has the same problem. > > I am not very sure that if this modify could cause other problems or not, > Because I don't know where fake_rtable was used. Check net/bridge/br_netfilter.c and commits e688a6048076 (net: introduce DST_NOPEER dst flag ) 4adf0af6818f3ea5 (bridge: send correct MTU value in PMTU (revised)) Apparently bug is because struct net_bridge is freed while its embedded fake_rtable is still used by some packets. I am not sure we are allowed to NULLify skb->dst, it might break netfilter. Maybe real fix would be to use a non embedded dst. -- 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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