3.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Cong Wang <cwang@xxxxxxxxxxxxxxxx> commit b6ed5498601df40489606dbc14a9c7011c16630b upstream. batman tries to search dev->iflink to check if it's a batman interface, but ->iflink could be 0, which is not a valid ifindex. It should just avoid iflink == 0 case. Reported-by: Jet Chen <jet.chen@xxxxxxxxx> Tested-by: Jet Chen <jet.chen@xxxxxxxxx> Cc: David S. Miller <davem@xxxxxxxxxxxxx> Cc: Steffen Klassert <steffen.klassert@xxxxxxxxxxx> Cc: Antonio Quartulli <antonio@xxxxxxxxxxxxx> Cc: Marek Lindner <mareklindner@xxxxxxxxxxxxx> Signed-off-by: Cong Wang <xiyou.wangcong@xxxxxxxxx> Signed-off-by: Cong Wang <cwang@xxxxxxxxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/batman-adv/hard-interface.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -83,7 +83,7 @@ static bool batadv_is_on_batman_iface(co return true; /* no more parents..stop recursion */ - if (net_dev->iflink == net_dev->ifindex) + if (net_dev->iflink == 0 || net_dev->iflink == net_dev->ifindex) return false; /* recurse over the parent device */ -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html