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| author | Linus Lüssing <linus.luessing@ascom.ch> | 2011-02-13 21:13:04 +0000 |
|---|---|---|
| committer | Marek Lindner <lindner_marek@yahoo.de> | 2011-03-05 12:50:12 +0100 |
| commit | 43c70ad5ce5691cce24dae6610731694c0f3fcc8 (patch) | |
| tree | 7dc7a769a166f846aebac8e37b3dfcdad9b6dc86 /net/batman-adv/gateway_client.c | |
| parent | 5d02b3cdfafeb23ab7cf43ef1d2118007370e8d0 (diff) | |
| download | blackbird-op-linux-43c70ad5ce5691cce24dae6610731694c0f3fcc8.tar.gz blackbird-op-linux-43c70ad5ce5691cce24dae6610731694c0f3fcc8.zip | |
batman-adv: Increase orig_node refcount before releasing rcu read lock
When unicast_send_skb() is increasing the orig_node's refcount another
thread might have been freeing this orig_node already. We need to
increase the refcount in the rcu read lock protected area to avoid that.
Signed-off-by: Linus Lüssing <linus.luessing@ascom.ch>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Diffstat (limited to 'net/batman-adv/gateway_client.c')
| -rw-r--r-- | net/batman-adv/gateway_client.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c index a3e842fd0f9c..41eba8a660f5 100644 --- a/net/batman-adv/gateway_client.c +++ b/net/batman-adv/gateway_client.c @@ -54,6 +54,9 @@ void *gw_get_selected(struct bat_priv *bat_priv) orig_node = curr_gateway_tmp->orig_node; + if (orig_node) + kref_get(&orig_node->refcount); + out: rcu_read_unlock(); return orig_node; |
