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authorCong Wang <cwang@twopensource.com>2014-05-22 11:57:17 -0700
committerJiri Slaby <jslaby@suse.cz>2014-12-06 16:02:11 +0100
commit0ac8b68cefb09d4fe332b76f3171dfece2582104 (patch)
parent3dbce781ec9e44932b9eb441d22c2b3a3cadeac3 (diff)
batman: fix a bogus warning from batadv_is_on_batman_iface()
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@intel.com> Tested-by: Jet Chen <jet.chen@intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Steffen Klassert <steffen.klassert@secunet.com> Cc: Antonio Quartulli <antonio@open-mesh.com> Cc: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: Cong Wang <cwang@twopensource.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Jiri Slaby <jslaby@suse.cz>
1 files changed, 1 insertions, 1 deletions
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index c478e6bcf89b..75f8c72a1f8f 100644
--- 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(const struct net_device *net_dev)
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 */