linux-kernel - Re: [PATCH next] ALSA: mixer: fix deadlock in snd_mixer_oss_set

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Message-ID: <s5hmtmwxr4d.wl-tiwai@suse.de>
Date:   Tue, 26 Oct 2021 08:00:18 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Pavel Skripkin <paskripkin@...il.com>
Cc:     perex@...ex.cz, tiwai@...e.com, broonie@...nel.org,
        joe@...ches.com, lars@...afoo.de, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org,
        syzbot+ace149a75a9a0a399ac7@...kaller.appspotmail.com
Subject: Re: [PATCH next] ALSA: mixer: fix deadlock in snd_mixer_oss_set_volume

On Sun, 24 Oct 2021 16:03:15 +0200,
Pavel Skripkin wrote:
> 
> In commit 411cef6adfb3 ("ALSA: mixer: oss: Fix racy access to slots")
> added mutex protection in snd_mixer_oss_set_volume(). Second
> mutex_lock() in same function looks like typo, fix it.
> 
> Reported-by: syzbot+ace149a75a9a0a399ac7@...kaller.appspotmail.com
> Fixes: 411cef6adfb3 ("ALSA: mixer: oss: Fix racy access to slots")
> Signed-off-by: Pavel Skripkin <paskripkin@...il.com>

Applied now, thanks!


Takashi