linux-kernel - Re: [PATCH v5 2/4] kernel hacking: new config NO_AUTO_INLINE to disable compiler auto-inline optimizations

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Date:   Thu, 07 Jun 2018 11:03:19 +0200
From:   Bernd Petrovitsch <bernd@...rovitsch.priv.at>
To:     Viresh Kumar <viresh.kumar@...aro.org>,
        "Du, Changbin" <changbin.du@...el.com>
Cc:     Steven Rostedt <rostedt@...dmis.org>, gregkh@...uxfoundation.org,
        alex.elder@...aro.org, Johan Hovold <johan@...nel.org>,
        kbuild test robot <lkp@...el.com>,
        linux-arch@...r.kernel.org, michal.lkml@...kovi.net,
        linux-kernel@...r.kernel.org, arnd@...db.de,
        yamada.masahiro@...ionext.com, lgirdwood@...il.com,
        broonie@...nel.org, rdunlap@...radead.org, x86@...nel.org,
        linux@...linux.org.uk, linux-sparse@...r.kernel.org,
        mingo@...hat.com, kbuild-all@...org, akpm@...ux-foundation.org,
        changbin.du@...il.com, tglx@...utronix.de,
        linux-kbuild@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v5 2/4] kernel hacking: new config NO_AUTO_INLINE to
 disable compiler auto-inline optimizations

On Thu, 2018-06-07 at 14:08 +0530, Viresh Kumar wrote:
> On 07-06-18, 15:46, Du, Changbin wrote:
> > I think if the destination is not a null terminated string (If I understand your
> > description below), memcpy can be used to get rid of such warning. The warning
> > makes sense in general as explained in mannual. Thanks!
> 
> The destination should be a null terminated string eventually, but we first need
> to make sure src is a null terminated string.

Is there strnlen() or memchr() in the kernel?
Then check the source before copying it.

Kind regards,
	Bernd
-- 
Bernd Petrovitsch                  Email : bernd@...rovitsch.priv.at
                     LUGA : http://www.luga.at