linux-kernel - Re: [PATCH] ASoC: intel: initialize return value properly

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:   Tue, 7 Nov 2017 09:26:42 +0530
From:   Vinod Koul <vinod.koul@...el.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Mark Brown <broonie@...nel.org>,
        Guneshwor Singh <guneshwor.o.singh@...el.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Naveen Manohar <naveen.m@...el.com>,
        "Subhransu S. Prusty" <subhransu.s.prusty@...el.com>,
        Harsha Priya N <harshapriya.n@...el.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ASoC: intel: initialize return value properly

On Mon, Nov 06, 2017 at 02:30:36PM +0100, Arnd Bergmann wrote:
> When CONFIG_SND_SOC_HDAC_HDMI is disabled, we can run into an
> uninitialized variable:
> 
> sound/soc/intel/skylake/skl.c: In function 'skl_resume':
> sound/soc/intel/skylake/skl.c:326:6: error: 'ret' may be used uninitialized in this function [-Werror=maybe-uninitialized]
> 
> I have run into this on today's linux-next kernel, but it appears
> that this is an older problem that was just hard to trigger
> with randconfig builds as CONFIG_SND_SOC_HDAC_HDMI would in
> effect be impossible to disable when having SND_SOC_INTEL_SKYLAKE
> enabled.

do we need this in changelog :)

Anyway this sound fine to me, so:

Acked-By: Vinod Koul <vinod.koul@...el.com>

> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  sound/soc/intel/skylake/skl.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/sound/soc/intel/skylake/skl.c b/sound/soc/intel/skylake/skl.c
> index 31d8634e8aa1..acb0ab470ca6 100644
> --- a/sound/soc/intel/skylake/skl.c
> +++ b/sound/soc/intel/skylake/skl.c
> @@ -355,6 +355,7 @@ static int skl_resume(struct device *dev)
>  
>  		if (ebus->cmd_dma_state)
>  			snd_hdac_bus_init_cmd_io(&ebus->bus);
> +		ret = 0;
>  	} else {
>  		ret = _skl_resume(ebus);
>  
> -- 
> 2.9.0
> 

-- 
~Vinod