linux-kernel - Re: [PATCH wireless-next] wlcore: debugfs: add an error code check in beacon_filtering

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:   Mon, 13 Nov 2023 14:53:28 +0800
From:   Su Hui <suhui@...china.com>
To:     Kalle Valo <kvalo@...nel.org>
Cc:     linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH wireless-next] wlcore: debugfs: add an error code check in
 beacon_filtering_write

On 2023/11/13 14:16, Kalle Valo wrote:

> Su Hui <suhui@...china.com> writes:
>
>> wl1271_acx_beacon_filter_opt() return error code if failed, add a check
>> for this is better and safer.
>>
>> Signed-off-by: Su Hui <suhui@...china.com>
> How did you test this?
>
Hi，

Only compile test.
Clang static checker complains about this code that  value stored to 
'ret' is never read.
And most of the caller check  the error code of 
wl1271_acx_beacon_filter_opt().

Such like this:
--
drivers/net/wireless/ti/wlcore/init.c:277:      ret = 
wl1271_acx_beacon_filter_opt(wl, wlvif, false);
drivers/net/wireless/ti/wlcore/init.c-278-      if (ret < 0)
drivers/net/wireless/ti/wlcore/init.c-279-              return ret;
--
drivers/net/wireless/ti/wlcore/init.c:410:      ret = 
wl1271_acx_beacon_filter_opt(wl, wlvif, false);
drivers/net/wireless/ti/wlcore/init.c-411-      if (ret < 0)
drivers/net/wireless/ti/wlcore/init.c-412-              return ret;
--
drivers/net/wireless/ti/wlcore/main.c:1652:     ret = 
wl1271_acx_beacon_filter_opt(wl, wlvif, true);
drivers/net/wireless/ti/wlcore/main.c-1653-     if (ret < 0)
drivers/net/wireless/ti/wlcore/main.c-1654-             goto out;

Sorry for the few test.

Su Hui