net: guard tcp_set_keepalive() to tcp sockets
authorEric Dumazet <edumazet@google.com>
Mon, 24 Sep 2012 07:00:11 +0000 (07:00 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 12 Oct 2012 20:47:03 +0000 (05:47 +0900)
commit8dababfcf8a507f93d23a10fc24c675c33e8b933
treeaefbb968160d20a92ca496bf2e664b8a6e2b33b6
parentfd5b2aaa47e613e4e546f39f117fe3178f0aafb3
net: guard tcp_set_keepalive() to tcp sockets

[ Upstream commit 3e10986d1d698140747fcfc2761ec9cb64c1d582 ]

Its possible to use RAW sockets to get a crash in
tcp_set_keepalive() / sk_reset_timer()

Fix is to make sure socket is a SOCK_STREAM one.

Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/core/sock.c