Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso...

[firefly-linux-kernel-4.4.55.git] / net / wireless / wext-sme.c

diff --git a/net/wireless/wext-sme.c b/net/wireless/wext-sme.c
index 873af63187c0c52bdc194d0620a4b946560b6e9c..fb9622f6d99c4b6b6c87f8a8d8e2c88e4fb3705c 100644 (file)
--- a/net/wireless/wext-sme.c
+++ b/net/wireless/wext-sme.c
@@ -242,13 +242,17 @@ int cfg80211_mgd_wext_giwessid(struct net_device *dev,
 
        wdev_lock(wdev);
        if (wdev->current_bss) {
-               const u8 *ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
-                                                   WLAN_EID_SSID);
+               const u8 *ie;
+
+               rcu_read_lock();
+               ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
+                                         WLAN_EID_SSID);
                if (ie) {
                        data->flags = 1;
                        data->length = ie[1];
                        memcpy(ssid, ie + 2, data->length);
                }
+               rcu_read_unlock();
        } else if (wdev->wext.connect.ssid && wdev->wext.connect.ssid_len) {
                data->flags = 1;
                data->length = wdev->wext.connect.ssid_len;