net: fix infoleak in llc

net: fix infoleak in llc

Orabug: 25308082

[ Upstream commit b8670c09f37bdf2847cc44f36511a53afc6161fd ]

The stack object “info” has a total size of 12 bytes. Its last byte
is padding which is not initialized and leaked via “put_cmsg”.

Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
(cherry picked from commit 5923f46563d1ce74c1f1178cba5a67735bb83e6d)
Signed-off-by: Dhaval Giani <dhaval.giani@oracle.com>