3.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sasha Levin <sasha.le...@oracle.com>
commit 3cf521f7dc87c031617fd47e4b7aa2593c2f3daf upstream.
The l2tp [get|set]sockopt() code has fallen back to the UDP functions
for socket option levels != SOL_PPPOL2TP since day one, but that has
never actually worked, since the l2tp socket isn't an inet socket.
As David Miller points out:
"If we wanted this to work, it'd have to look up the tunnel and then
use tunnel->sk, but I wonder how useful that would be"
Since this can never have worked so nobody could possibly have depended
on that functionality, just remove the broken code and return -EINVAL.
Reported-by: Sasha Levin <sasha.le...@oracle.com>
Acked-by: James Chapman <jchap...@katalix.com>
Acked-by: David Miller <da...@davemloft.net>
Cc: Phil Turnbull <phil.turnb...@oracle.com>
Cc: Vegard Nossum <vegard.nos...@oracle.com>
Cc: Willy Tarreau <w...@1wt.eu>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
net/l2tp/l2tp_ppp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/net/l2tp/l2tp_ppp.c
+++ b/net/l2tp/l2tp_ppp.c
@@ -1365,7 +1365,7 @@ static int pppol2tp_setsockopt(struct so
int err;
if (level != SOL_PPPOL2TP)
- return udp_prot.setsockopt(sk, level, optname, optval, optlen);
+ return -EINVAL;
if (optlen < sizeof(int))
return -EINVAL;
@@ -1491,7 +1491,7 @@ static int pppol2tp_getsockopt(struct so
struct pppol2tp_session *ps;
if (level != SOL_PPPOL2TP)
- return udp_prot.getsockopt(sk, level, optname, optval, optlen);
+ return -EINVAL;
if (get_user(len, optlen))
return -EFAULT;
--
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