Doug Kehn
authored
When configuring DMVPN (GRE + openNHRP) and a GRE remote address is configured a kernel Oops is observed. The obserseved Oops is caused by a NULL header_ops pointer (neigh->dev->header_ops) in neigh_update_hhs() when void (*update)(struct hh_cache*, const struct net_device*, const unsigned char *) = neigh->dev->header_ops->cache_update; is executed. The dev associated with the NULL header_ops is the GRE interface. This patch guards against the possibility that header_ops is NULL. This Oops was first observed in kernel version 2.6.26.8. Signed-off-by:Doug Kehn <rdkehn@yahoo.com> Acked-by:
Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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802 | ||
8021q | ||
9p | ||
appletalk | ||
atm | ||
ax25 | ||
bluetooth | ||
bridge | ||
caif | ||
can | ||
core | ||
dcb | ||
dccp | ||
decnet | ||
dsa | ||
econet | ||
ethernet | ||
ieee802154 | ||
ipv4 | ||
ipv6 | ||
ipx | ||
irda | ||
iucv | ||
key | ||
l2tp | ||
lapb | ||
llc | ||
mac80211 | ||
netfilter | ||
netlabel | ||
netlink | ||
netrom | ||
packet | ||
phonet | ||
rds | ||
rfkill | ||
rose | ||
rxrpc | ||
sched | ||
sctp | ||
sunrpc | ||
tipc | ||
unix | ||
wanrouter | ||
wimax | ||
wireless | ||
x25 | ||
xfrm | ||
Kconfig | ||
Makefile | ||
TUNABLE | ||
compat.c | ||
nonet.c | ||
socket.c | ||
sysctl_net.c |