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cfg80211: fix crash in cfg80211_set_freq()
authorFelix Fietkau <nbd@openwrt.org>
Sat, 15 May 2010 13:46:17 +0000 (15:46 +0200)
committerJohn W. Linville <linville@tuxdriver.com>
Fri, 21 May 2010 18:40:00 +0000 (14:40 -0400)
Since wdev can be NULL, check it before dereferencing it

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
net/wireless/chan.c patch | blob | blame | history

diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index d92d088026bf885e30607f81799781a4c94c2794..b01a6f6397d7be03659547f98f06569011ffac77 100644 (file)
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -50,7 +50,7 @@ int cfg80211_set_freq(struct cfg80211_registered_device *rdev,
        struct ieee80211_channel *chan;
        int result;
 
-       if (wdev->iftype == NL80211_IFTYPE_MONITOR)
+       if (wdev && wdev->iftype == NL80211_IFTYPE_MONITOR)
                wdev = NULL;
 
        if (wdev) {