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| author | Linus Lüssing <linus.luessing@web.de> | 2013-07-27 03:24:44 +0200 |
|---|---|---|
| committer | Antonio Quartulli <ordex@autistici.org> | 2013-08-17 20:02:32 +0200 |
| commit | 50fa3b31f4700deb1a860fa1a04016b889765323 (patch) | |
| tree | b830adeed468babf3057a0296e30efb182c03cf5 | |
| parent | 0f7dd1aa8f959216f1faa71513b9d3c1a9065e5a (diff) | |
| download | linux-50fa3b31f4700deb1a860fa1a04016b889765323.tar.bz2 | |
batman-adv: check return type of unicast packet preparations
batadv_unicast(_4addr)_prepare_skb might reallocate the skb's data.
And if it tries to do so then this can potentially fail.
We shouldn't continue working on this skb in such a case.
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Acked-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
| -rw-r--r-- | net/batman-adv/unicast.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/net/batman-adv/unicast.c b/net/batman-adv/unicast.c index 688a0419756b..857e1b8349ee 100644 --- a/net/batman-adv/unicast.c +++ b/net/batman-adv/unicast.c @@ -432,12 +432,16 @@ find_router: switch (packet_type) { case BATADV_UNICAST: - batadv_unicast_prepare_skb(skb, orig_node); + if (!batadv_unicast_prepare_skb(skb, orig_node)) + goto out; + header_len = sizeof(struct batadv_unicast_packet); break; case BATADV_UNICAST_4ADDR: - batadv_unicast_4addr_prepare_skb(bat_priv, skb, orig_node, - packet_subtype); + if (!batadv_unicast_4addr_prepare_skb(bat_priv, skb, orig_node, + packet_subtype)) + goto out; + header_len = sizeof(struct batadv_unicast_4addr_packet); break; default: |