linux-kernel - Re: [PATCH v1 2/2] Mark functions with the _

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Date:	Wed, 29 Jun 2016 20:39:14 +0200
From:	Emese Revfy <re.emese@...il.com>
To:	Rasmus Villemoes <linux@...musvillemoes.dk>
Cc:	kernel-hardening@...ts.openwall.com, pageexec@...email.hu,
	spender@...ecurity.net, mmarek@...e.com, keescook@...omium.org,
	linux-kernel@...r.kernel.org, yamada.masahiro@...ionext.com,
	linux-kbuild@...r.kernel.org, minipli@...linux.so,
	linux@...linux.org.uk, catalin.marinas@....com,
	david.brown@...aro.org, benh@...nel.crashing.org,
	tglx@...utronix.de, akpm@...ux-foundation.org,
	jlayton@...chiereds.net, arnd@...db.de
Subject: Re: [PATCH v1 2/2] Mark functions with the __nocapture attribute

On Tue, 28 Jun 2016 22:50:55 +0200
Rasmus Villemoes <linux@...musvillemoes.dk> wrote:

> On Tue, Jun 28 2016, Emese Revfy <re.emese@...il.com> wrote: 
> > diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
> > index 6f96247..4cdf266 100644
> > --- a/include/asm-generic/bug.h
> > +++ b/include/asm-generic/bug.h
> > @@ -62,13 +62,13 @@ struct bug_entry {
> >   * to provide better diagnostics.
> >   */
> >  #ifndef __WARN_TAINT
> > -extern __printf(3, 4)
> > +extern __printf(3, 4) __nocapture(1, 3, 4)
> >  void warn_slowpath_fmt(const char *file, const int line,
> >  		       const char *fmt, ...);
> > -extern __printf(4, 5)
> > +extern __printf(4, 5) __nocapture(1, 4, 5)
> >  void warn_slowpath_fmt_taint(const char *file, const int line, unsigned taint,
> >  			     const char *fmt, ...);
> 
> The 3,4 and 4,5 parts seem redundant when __printf automatically supplies those.

Thanks, I'll fix them in the next patch set.

-- 
Emese