linux-kernel - Re: [PATCH v6 9/9] vsprintf: Avoid confusion between invalid address and value

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Message-ID: <20190208172717.GW9224@smile.fi.intel.com>
Date:   Fri, 8 Feb 2019 19:27:17 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Petr Mladek <pmladek@...e.com>
Cc:     Rasmus Villemoes <linux@...musvillemoes.dk>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        "Tobin C . Harding" <me@...in.cc>, Joe Perches <joe@...ches.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.cz>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 9/9] vsprintf: Avoid confusion between invalid address
 and value

On Fri, Feb 08, 2019 at 04:23:10PM +0100, Petr Mladek wrote:
> We are able to detect invalid values handled by %p[iI] printk specifier.
> The current error message is "invalid address". It might cause confusion
> against "(efault)" reported by the generic valid_pointer_address() check.
> 
> Let's unify the style and use the more appropriate error code description
> "(einval)".

The proper one should be "invalid address family". The proposed change
increases confusion.

-- 
With Best Regards,
Andy Shevchenko