From 33eb9873a283a2076f2b5628813d5365ca420ea9 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 24 May 2011 13:32:18 -0400 Subject: [PATCH] bridge: initialize fake_rtable metrics bridge netfilter code uses a fake_rtable, and we must init its _metric field or risk NULL dereference later. Ref: https://bugzilla.kernel.org/show_bug.cgi?id=35672 Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/bridge/br_netfilter.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c index e1f5ec75e91c..3fa123185e89 100644 --- a/net/bridge/br_netfilter.c +++ b/net/bridge/br_netfilter.c @@ -117,6 +117,10 @@ static struct dst_ops fake_dst_ops = { * ipt_REJECT needs it. Future netfilter modules might * require us to fill additional fields. */ +static const u32 br_dst_default_metrics[RTAX_MAX] = { + [RTAX_MTU - 1] = 1500, +}; + void br_netfilter_rtable_init(struct net_bridge *br) { struct rtable *rt = &br->fake_rtable; @@ -124,7 +128,7 @@ void br_netfilter_rtable_init(struct net_bridge *br) atomic_set(&rt->dst.__refcnt, 1); rt->dst.dev = br->dev; rt->dst.path = &rt->dst; - dst_metric_set(&rt->dst, RTAX_MTU, 1500); + dst_init_metrics(&rt->dst, br_dst_default_metrics, true); rt->dst.flags = DST_NOXFRM; rt->dst.ops = &fake_dst_ops; } -- 2.30.2