brcmfmac: fix memory leak in brcmf_fill_bss_param

commit 23e9c128adb2038c27a424a5f91136e7fa3e0dc6 upstream.

This function is called from get_station callback which means that every
time user space was getting/dumping station(s) we were leaking 2 KiB.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Fixes: 1f0dc59a6de ("brcmfmac: rework .get_station() callback")
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
index deb5f78..71493d2 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/cfg80211.c
@@ -2408,7 +2408,7 @@ static void brcmf_fill_bss_param(struct brcmf_if *ifp, struct station_info *si)
                                     WL_BSS_INFO_MAX);
        if (err) {
                brcmf_err("Failed to get bss info (%d)\n", err);
-               return;
+               goto out_kfree;
        }
        si->filled |= BIT(NL80211_STA_INFO_BSS_PARAM);
        si->bss_param.beacon_interval = le16_to_cpu(buf->bss_le.beacon_period);
@@ -2420,6 +2420,9 @@ static void brcmf_fill_bss_param(struct brcmf_if *ifp, struct station_info *si)
                si->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
        if (capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
                si->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
+
+out_kfree:
+       kfree(buf);
 }
 
 static s32