cfg80211: fix memory leak in cfg80211_cqm_rssi_update

commit df16737d438f534d0cc9948c7c5158f1986c5c87 upstream.

The per-tid statistics need to be released after the call to rdev_get_station

Cc: stable@vger.kernel.org
Fixes: 8689c051a201 ("cfg80211: dynamically allocate per-tid stats for station info")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20200108170630.33680-2-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 5075fd2..823dea1 100644 (file)
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -10305,6 +10305,7 @@ static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
                if (err)
                        return err;
 
+               cfg80211_sinfo_release_content(&sinfo);
                if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
                        wdev->cqm_config->last_rssi_event_value =
                                (s8) sinfo.rx_beacon_signal_avg;