[B.A.T.M.A.N.] [PATCH maint] batman-adv: fix indirect hard_iface NULL dereference

If hard_iface is NULL and goto out is made batadv_hardif_free_ref() doesn't check for NULL before dereferencing it to get to refcount.

Reported-by: Sven Eckelmann sven@narfation.org Signed-off-by: Marek Lindner mareklindner@neomailbox.ch --- originator.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/originator.c b/originator.c index aa2468b..35b42f8 100644 --- a/originator.c +++ b/originator.c @@ -1074,7 +1074,8 @@ int batadv_orig_hardif_seq_print_text(struct seq_file *seq, void *offset) bat_priv->bat_algo_ops->bat_orig_print(bat_priv, seq, hard_iface);

out: - batadv_hardif_free_ref(hard_iface); + if (hard_iface) + batadv_hardif_free_ref(hard_iface); return 0; }