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nl80211: check nla_nest_start() return value

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Coverity pointed out that we might dereference NULL later
if nla_nest_start() returns a failure. This isn't really
true since we'd bomb out before, but we should check the
return value directly, so do that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2013-10-25 11:16:58 +02:00
parent 9fe271af7d
commit 7fa322c878
1 changed files with 2 additions and 0 deletions
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2
net/wireless/nl80211.c
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@ -11094,6 +11094,8 @@ void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
struct nlattr *reasons;
reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS);
if (!reasons)
goto free_msg;
if (wakeup->disconnect &&
nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))