linux-kernel - Re: [PATCH] lib: vsprintf: check for NULL device_node name in device_node

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Message-ID: <29af7ed3-2ca8-133b-387a-375261ed1289@metux.net>
Date:   Tue, 23 Feb 2021 20:54:48 +0100
From:   "Enrico Weigelt, metux IT consult" <info@...ux.net>
To:     Petr Mladek <pmladek@...e.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     "Enrico Weigelt, metux IT consult" <info@...ux.net>,
        linux-kernel@...r.kernel.org, rostedt@...dmis.org,
        sergey.senozhatsky@...il.com, linux@...musvillemoes.dk,
        kafai@...com, songliubraving@...com, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org,
        netdev@...r.kernel.org, bpf@...r.kernel.org
Subject: Re: [PATCH] lib: vsprintf: check for NULL device_node name in
 device_node_string()

On 18.02.21 13:53, Petr Mladek wrote:

> Please, use
> 
> 	if (check_pointer(&buf, end, p, spec))
> 		return buf;
> 
> It will print "(null)" instead of the name. It should be enough
> to inform the user this way. The extra pr_warn() does not help
> much to localize the problem anyway. And it is better to avoid
> recursion in this path.

thx, going to use it in v2.


--mtx

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Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@...ux.net -- +49-151-27565287