From: Konstantin Khlebnikov Date: Mon, 30 Nov 2015 22:14:48 +0000 (+0300) Subject: net/neighbour: fix crash at dumping device-agnostic proxy entries X-Git-Tag: v4.14-rc1~4226^2~12 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6adc5fd6a142c6e2c80574c1db0c7c17dedaa42e;p=platform%2Fkernel%2Flinux-rpi.git net/neighbour: fix crash at dumping device-agnostic proxy entries Proxy entries could have null pointer to net-device. Signed-off-by: Konstantin Khlebnikov Fixes: 84920c1420e2 ("net: Allow ipv6 proxies and arp proxies be shown with iproute2") Signed-off-by: David S. Miller --- diff --git a/net/core/neighbour.c b/net/core/neighbour.c index e6af42d..f18ae91 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -2215,7 +2215,7 @@ static int pneigh_fill_info(struct sk_buff *skb, struct pneigh_entry *pn, ndm->ndm_pad2 = 0; ndm->ndm_flags = pn->flags | NTF_PROXY; ndm->ndm_type = RTN_UNICAST; - ndm->ndm_ifindex = pn->dev->ifindex; + ndm->ndm_ifindex = pn->dev ? pn->dev->ifindex : 0; ndm->ndm_state = NUD_NONE; if (nla_put(skb, NDA_DST, tbl->key_len, pn->key)) @@ -2333,7 +2333,7 @@ static int pneigh_dump_table(struct neigh_table *tbl, struct sk_buff *skb, if (h > s_h) s_idx = 0; for (n = tbl->phash_buckets[h], idx = 0; n; n = n->next) { - if (dev_net(n->dev) != net) + if (pneigh_net(n) != net) continue; if (idx < s_idx) goto next;