From: Johannes Berg <johannes.berg@xxxxxxxxx>
If a P2P Device interface receives an unhandled action
frame, we attempt to return it. This crashes because it
doesn't have a channel context. Fix the crash by using
status->band and properly mark the return frame as an
off-channel frame.
Reported-by: Ilan Peer <ilan.peer@xxxxxxxxx>
Reviewed-by: Ilan Peer <ilan.peer@xxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
---
net/mac80211/rx.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 5b4492a..2528b5a 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2666,7 +2666,19 @@ ieee80211_rx_h_action_return(struct ieee80211_rx_data *rx)
memset(nskb->cb, 0, sizeof(nskb->cb));
- ieee80211_tx_skb(rx->sdata, nskb);
+ if (rx->sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) {
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(nskb);
+
+ info->flags = IEEE80211_TX_CTL_TX_OFFCHAN |
+ IEEE80211_TX_INTFL_OFFCHAN_TX_OK |
+ IEEE80211_TX_CTL_NO_CCK_RATE;
+ if (local->hw.flags & IEEE80211_HW_QUEUE_CONTROL)
+ info->hw_queue =
+ local->hw.offchannel_tx_hw_queue;
+ }
+
+ __ieee80211_tx_skb_tid_band(rx->sdata, nskb, 7,
+ status->band);
}
dev_kfree_skb(rx->skb);
return RX_QUEUED;
--
1.8.0
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