linux-kernel - Re: [PATCH] fbcon: Destroy mutex on freeing struct fb

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] [day] [month] [year] [list]

Message-ID: <5fcc858a-c9f2-0a9c-ded9-5df2d794e3be@gmx.de>
Date:   Mon, 22 Aug 2022 22:09:23 +0200
From:   Helge Deller <deller@....de>
To:     Shigeru Yoshida <syoshida@...hat.com>
Cc:     linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fbcon: Destroy mutex on freeing struct fb_info

On 8/21/22 13:17, Shigeru Yoshida wrote:
> It's needed to destroy bl_curve_mutex on freeing struct fb_info since
> the mutex is embedded in the structure and initialized when it's
> allocated.
>
> Signed-off-by: Shigeru Yoshida <syoshida@...hat.com>

applied.
Thanks,
Helge

> ---
>  drivers/video/fbdev/core/fbsysfs.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/video/fbdev/core/fbsysfs.c b/drivers/video/fbdev/core/fbsysfs.c
> index c2a60b187467..4d7f63892dcc 100644
> --- a/drivers/video/fbdev/core/fbsysfs.c
> +++ b/drivers/video/fbdev/core/fbsysfs.c
> @@ -84,6 +84,10 @@ void framebuffer_release(struct fb_info *info)
>  	if (WARN_ON(refcount_read(&info->count)))
>  		return;
>
> +#if IS_ENABLED(CONFIG_FB_BACKLIGHT)
> +	mutex_destroy(&info->bl_curve_mutex);
> +#endif
> +
>  	kfree(info->apertures);
>  	kfree(info);
>  }