• Tom Parkin's avatar
    l2tp: fix oops in l2tp_eth_create() error path · 78933636
    Tom Parkin authored
    
    
    When creating an L2TPv3 Ethernet session, if register_netdev() should fail for
    any reason (for example, automatic naming for "l2tpeth%d" interfaces hits the
    32k-interface limit), the netdev is freed in the error path.  However, the
    l2tp_eth_sess structure's dev pointer is left uncleared, and this results in
    l2tp_eth_delete() then attempting to unregister the same netdev later in the
    session teardown.  This results in an oops.
    
    To avoid this, clear the session dev pointer in the error path.
    Signed-off-by: default avatarTom Parkin <tparkin@katalix.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    78933636