netdev - [PATCH 02/19] staging: wfx: reduce hold duration of cfg80211

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 10 Apr 2020 15:32:22 +0200
From:   Jerome Pouiller <Jerome.Pouiller@...abs.com>
To:     devel@...verdev.osuosl.org, linux-wireless@...r.kernel.org
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S . Miller" <davem@...emloft.net>,
        Jérôme Pouiller 
        <jerome.pouiller@...abs.com>
Subject: [PATCH 02/19] staging: wfx: reduce hold duration of cfg80211_bss

From: Jérôme Pouiller <jerome.pouiller@...abs.com>

Pointer to cfg80211_bss is held during all duration of wfx_do_join. But,
it is not necessary, We can release it far earlier.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@...abs.com>
---
 drivers/staging/wfx/sta.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c
index 380e5319472a..c65d464a7a9b 100644
--- a/drivers/staging/wfx/sta.c
+++ b/drivers/staging/wfx/sta.c
@@ -509,6 +509,7 @@ static void wfx_do_join(struct wfx_vif *wvif)
 		hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
 
 	wfx_set_mfp(wvif, bss);
+	cfg80211_put_bss(wvif->wdev->hw->wiphy, bss);
 
 	ret = hif_join(wvif, conf, wvif->channel, ssid, ssidlen);
 	if (ret) {
@@ -538,8 +539,6 @@ static void wfx_do_join(struct wfx_vif *wvif)
 	wfx_update_filtering(wvif);
 
 	mutex_unlock(&wvif->wdev->conf_mutex);
-	if (bss)
-		cfg80211_put_bss(wvif->wdev->hw->wiphy, bss);
 }
 
 static void wfx_unjoin_work(struct work_struct *work)
-- 
2.25.1