37 lines
1.1 KiB
Diff
37 lines
1.1 KiB
Diff
From: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
|
|
Date: Wed, 10 Feb 2016 16:08:17 +0100
|
|
Subject: [PATCH] mac80211: fix wiphy supported_band access
|
|
|
|
Fix wiphy supported_band access in tx radiotap parsing. In particular,
|
|
info->band is always set to 0 (IEEE80211_BAND_2GHZ) since it has not
|
|
assigned yet. This cause a kernel crash on 5GHz only devices.
|
|
Move ieee80211_parse_tx_radiotap() after info->band assignment
|
|
|
|
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
|
|
---
|
|
|
|
--- a/net/mac80211/tx.c
|
|
+++ b/net/mac80211/tx.c
|
|
@@ -1890,10 +1890,6 @@ netdev_tx_t ieee80211_monitor_start_xmit
|
|
info->flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
|
|
IEEE80211_TX_CTL_INJECTED;
|
|
|
|
- /* process and remove the injection radiotap header */
|
|
- if (!ieee80211_parse_tx_radiotap(local, skb))
|
|
- goto fail;
|
|
-
|
|
rcu_read_lock();
|
|
|
|
/*
|
|
@@ -1955,6 +1951,10 @@ netdev_tx_t ieee80211_monitor_start_xmit
|
|
goto fail_rcu;
|
|
|
|
info->band = chandef->chan->band;
|
|
+ /* process and remove the injection radiotap header */
|
|
+ if (!ieee80211_parse_tx_radiotap(local, skb))
|
|
+ goto fail_rcu;
|
|
+
|
|
ieee80211_xmit(sdata, NULL, skb);
|
|
rcu_read_unlock();
|
|
|