linux-kernel - [PATCH] rtlwifi: btcoexist: fix conditions branches that are never executed

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 for Android: free password hash cracker in your pocket

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

Date:   Tue,  6 Dec 2022 13:49:19 +0300
From:   Peter Kosyh <pkosyh@...dex.ru>
To:     Ping-Ke Shih <pkshih@...ltek.com>
Cc:     Peter Kosyh <pkosyh@...dex.ru>, Kalle Valo <kvalo@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, lvc-project@...uxtesting.org
Subject: [PATCH] rtlwifi: btcoexist: fix conditions branches that are never executed

Commit 40ca18823515 ("rtlwifi: btcoex: 23b 1ant: fine tune for wifi not
 connected") introduced never executed branches.

Compile test only.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Peter Kosyh <pkosyh@...dex.ru>
---
I'm not sure that patch do right thing! But these two places are really
never executed and should be fixed. I hope that Ping-Ka could check this.

 .../net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c
index 70492929d7e4..039bbedb41c2 100644
--- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c
+++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c
@@ -1903,7 +1903,7 @@ btc8723b1ant_action_wifi_not_conn_scan(struct btc_coexist *btcoexist)
 						true, 32);
 			halbtc8723b1ant_coex_table_with_type(btcoexist,
 							     NORMAL_EXEC, 4);
-		} else if (bt_link_info->a2dp_exist) {
+		} else if (bt_link_info->pan_exist) {
 			halbtc8723b1ant_ps_tdma(btcoexist, NORMAL_EXEC,
 						true, 22);
 			halbtc8723b1ant_coex_table_with_type(btcoexist,
@@ -1964,8 +1964,7 @@ static void btc8723b1ant_action_wifi_conn_scan(struct btc_coexist *btcoexist)
 						true, 32);
 			halbtc8723b1ant_coex_table_with_type(btcoexist,
 							     NORMAL_EXEC, 4);
-		} else if (bt_link_info->a2dp_exist &&
-			   bt_link_info->pan_exist) {
+		} else if (bt_link_info->pan_exist) {
 			halbtc8723b1ant_ps_tdma(btcoexist, NORMAL_EXEC,
 						true, 22);
 			halbtc8723b1ant_coex_table_with_type(btcoexist,
-- 
2.38.1