From 7ea3e110f2f8ba23f330c2f702f556acd539bcb8 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 18 May 2018 11:40:44 +0200 Subject: cfg80211: release station info tidstats where needed This fixes memory leaks in cases where we got the station info but failed sending it out properly. Fixes: 8689c051a201 ("cfg80211: dynamically allocate per-tid stats for station info") Reviewed-by: Arend van Spriel Signed-off-by: Johannes Berg --- net/wireless/nl80211.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'net/wireless/nl80211.c') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 7daceb1..e4a52a2b 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -4702,7 +4702,6 @@ static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid, } nla_nest_end(msg, tidsattr); - kfree(sinfo->pertid); } nla_nest_end(msg, sinfoattr); @@ -4712,10 +4711,12 @@ static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid, sinfo->assoc_req_ies)) goto nla_put_failure; + cfg80211_sinfo_release_content(sinfo); genlmsg_end(msg, hdr); return 0; nla_put_failure: + cfg80211_sinfo_release_content(sinfo); genlmsg_cancel(msg, hdr); return -EMSGSIZE; } @@ -4797,8 +4798,10 @@ static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) return err; msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); - if (!msg) + if (!msg) { + cfg80211_sinfo_release_content(sinfo); return -ENOMEM; + } if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, info->snd_portid, info->snd_seq, 0, @@ -14624,8 +14627,10 @@ void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, trace_cfg80211_del_sta(dev, mac_addr); msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); - if (!msg) + if (!msg) { + cfg80211_sinfo_release_content(sinfo); return; + } if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0, rdev, dev, mac_addr, sinfo) < 0) { -- cgit v1.1