diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2009-07-07 03:43:02 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-07-08 15:24:26 -0400 |
| commit | 4ff176674e75bdee9022dded415fb805f15700ad (patch) | |
| tree | d4a103ec06836e07927930c6c86594ca00270a08 /drivers/net/wireless/mac80211_hwsim.c | |
| parent | 2fbddeb5c409c90be4706ea2beb7f1fc02100c72 (diff) | |
| download | linux-4ff176674e75bdee9022dded415fb805f15700ad.tar.gz linux-4ff176674e75bdee9022dded415fb805f15700ad.tar.bz2 linux-4ff176674e75bdee9022dded415fb805f15700ad.zip | |
mac80211_hwsim: avoid NULL access
There's a race condition -- started can be set to true
before channel is set due to the way mac80211 callbacks
currently work (->start should probably pass the channel
we would like to have initially). For now simply add a
check to hwsim to avoid dereferencing the NULL channel
pointer.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/mac80211_hwsim.c')
| -rw-r--r-- | drivers/net/wireless/mac80211_hwsim.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index e789c6e9938c..a111bda392e2 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -418,6 +418,7 @@ static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw, continue; if (!data2->started || !hwsim_ps_rx_ok(data2, skb) || + !data->channel || !data2->channel || data->channel->center_freq != data2->channel->center_freq || !(data->group & data2->group)) continue; |