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authorAntonio Quartulli <antonio@meshcoding.com>2014-01-30 00:12:24 +0100
committerAntonio Quartulli <antonio@meshcoding.com>2014-02-17 17:17:01 +0100
commitf1791425cf0bcda43ab9a9a37df1ad3ccb1f6654 (patch)
tree168bc48d9894cdf33b3065ddc5982d44605b73c4 /net/batman-adv
parent91c2b1a9f680ff105369d49abc7e19ca7efb33e1 (diff)
batman-adv: properly check pskb_may_pull return value
pskb_may_pull() returns 1 on success and 0 in case of failure, therefore checking for the return value being negative does not make sense at all. This way if the function fails we will probably read beyond the current skb data buffer. Fix this by doing the proper check. Signed-off-by: Antonio Quartulli <antonio@meshcoding.com> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Diffstat (limited to 'net/batman-adv')
-rw-r--r--net/batman-adv/routing.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index 1ed9f7c9ecea..c26f07368849 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -688,7 +688,7 @@ static int batadv_check_unicast_ttvn(struct batadv_priv *bat_priv,
int is_old_ttvn;
/* check if there is enough data before accessing it */
- if (pskb_may_pull(skb, hdr_len + ETH_HLEN) < 0)
+ if (!pskb_may_pull(skb, hdr_len + ETH_HLEN))
return 0;
/* create a copy of the skb (in case of for re-routing) to modify it. */

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