linux-kernel - Re: [PATCH v4 1/2] vsprintf: Fix potential unaligned access

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Message-ID: <YgUVgX42gbahbBuc@alley>
Date:   Thu, 10 Feb 2022 14:39:13 +0100
From:   Petr Mladek <pmladek@...e.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>
Subject: Re: [PATCH v4 1/2] vsprintf: Fix potential unaligned access

On Thu 2022-01-27 20:12:32, Andy Shevchenko wrote:
> The %p4cc specifier in some cases might get an unaligned pointer.
> Due to this we need to make copy to local variable once to avoid
> potential crashes on some architectures due to improper access.
> 
> Fixes: af612e43de6d ("lib/vsprintf: Add support for printing V4L2 and DRM fourccs")
> Cc: Sakari Ailus <sakari.ailus@...ux.intel.com>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> Reviewed-by: Petr Mladek <pmladek@...e.com>

Both patches have been committed into printk/linux.git,
branch for-5.18-vsprintf-fourcc-fixup .

Best Regards,
Petr