linux-kernel - Re: [alsa-devel] [PATCH 6/7] dmasound_core: Move two assignments for the variable "ret" in state

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]

Message-ID: <5701efac-3c37-8b6c-fbe7-89a54e988998@ladisch.de>
Date:   Wed, 25 Jan 2017 08:40:27 +0100
From:   Clemens Ladisch <clemens@...isch.de>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>,
        alsa-devel@...a-project.org
Cc:     Jaroslav Kysela <perex@...ex.cz>,
        Martin Koegler <martin.koegler@...llo.at>,
        Takashi Iwai <tiwai@...e.com>,
        Takashi Sakamoto <o-takashi@...amocchi.jp>,
        kernel-janitors@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [alsa-devel] [PATCH 6/7] dmasound_core: Move two assignments for
 the variable "ret" in state_open()

SF Markus Elfring wrote:
> A local variable was set to an error code in two cases before a concrete
> error situation was detected.

And why would that be a problem?

http://yarchive.net/comp/linux/error_jumps.html

> -	ret = -EBUSY;
> -	if (state.busy)
> +	if (state.busy) {
> +		ret = -EBUSY;
>  		goto out;
> +	}


Regards,
Clemens