This is a note to let you know that I've just added the patch titled
mac80211_hwsim: initialize ieee80211_tx_info at hw_scan_work
to the 5.16-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mac80211_hwsim-initialize-ieee80211_tx_info-at-hw_sc.patch
and it can be found in the queue-5.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 781185a7fd69d0df83cfd81f60d05179b1c74c12
Author: JaeMan Park <jaeman@xxxxxxxxxx>
Date: Thu Jan 13 15:02:35 2022 +0900
mac80211_hwsim: initialize ieee80211_tx_info at hw_scan_work
[ Upstream commit cacfddf82baf1470e5741edeecb187260868f195 ]
In mac80211_hwsim, the probe_req frame is created and sent while
scanning. It is sent with ieee80211_tx_info which is not initialized.
Uninitialized ieee80211_tx_info can cause problems when using
mac80211_hwsim with wmediumd. wmediumd checks the tx_rates field of
ieee80211_tx_info and doesn't relay probe_req frame to other clients
even if it is a broadcasting message.
Call ieee80211_tx_prepare_skb() to initialize ieee80211_tx_info for
the probe_req that is created by hw_scan_work in mac80211_hwsim.
Signed-off-by: JaeMan Park <jaeman@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220113060235.546107-1-jaeman@xxxxxxxxxx
[fix memory leak]
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 20fae2df848fb..f7cfda9192de2 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -2336,6 +2336,15 @@ static void hw_scan_work(struct work_struct *work)
if (req->ie_len)
skb_put_data(probe, req->ie, req->ie_len);
+ if (!ieee80211_tx_prepare_skb(hwsim->hw,
+ hwsim->hw_scan_vif,
+ probe,
+ hwsim->tmp_chan->band,
+ NULL)) {
+ kfree_skb(probe);
+ continue;
+ }
+
local_bh_disable();
mac80211_hwsim_tx_frame(hwsim->hw, probe,
hwsim->tmp_chan);
