tree 6fc84b84873ecf41026975b784375ffc92cf753f
parent 1c3639005f48492e5f2d965779efd814e80f8b15
author Susant Sahani <susant@redhat.com> 1399660892 +0530
committer David S. Miller <davem@davemloft.net> 1399955239 -0400

ip6_tunnel: fix potential NULL pointer dereference

The function ip6_tnl_validate assumes that the rtnl
attribute IFLA_IPTUN_PROTO always be filled . If this
attribute is not filled by  the userspace application
kernel get crashed with NULL pointer dereference. This
patch fixes the potential kernel crash when
IFLA_IPTUN_PROTO is missing .

Signed-off-by: Susant Sahani <susant@redhat.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>