From 9fbc630c89fd210e15ffe84fd6e968a2d39000b0 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sat, 15 May 2010 15:46:17 +0200 Subject: [PATCH] cfg80211: fix crash in cfg80211_set_freq() Since wdev can be NULL, check it before dereferencing it Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- net/wireless/chan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/wireless/chan.c b/net/wireless/chan.c index d92d088026b..b01a6f6397d 100644 --- 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) { -- 2.20.1