linux-kernel - Re: [patch] lib: check for strcpy() overflows to fixed length buffers

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Message-ID: <20140506124157.GT4963@mwanda>
Date:	Tue, 6 May 2014 15:41:57 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	devel@...ica.org, kernel-hardening@...ts.openwall.com,
	Kees Cook <keescook@...omium.org>,
	Dave Jones <davej@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Robert Moore <robert.moore@...el.com>,
	Lv Zheng <lv.zheng@...el.com>
Subject: Re: [patch] lib: check for strcpy() overflows to fixed length buffers

On Wed, Apr 30, 2014 at 11:15:29PM +0300, Dan Carpenter wrote:
> > > diff --git a/include/acpi/platform/acenv.h b/include/acpi/platform/acenv.h
> > > index e863dd5..5e0fc2b 100644
> > > --- a/include/acpi/platform/acenv.h
> > > +++ b/include/acpi/platform/acenv.h
> > 
> > This is an ACPICA header and changes to it need to be submitted to the ACPICA
> > maintainers (as per MAINTAINERS).  We only get ACPICA changes from the
> > upstream project (except for really special situations).
> 
> Ok.  I should have added Robert and Lv to the CC list.  My guess is
> that the (void) is needed to avoid compile warnings but it's needed for
> us to avoid compile breakage with this change.
> 
> Anyway, I'll wait for a couple days and resend that bit broken out.
> 

In the end, I won't need to modify the ACPICA headers if I use an
expression statement ({ ... }) instead of a do { } while (0) statement.

Thanks, though.  :)

regards,
dan carpenter
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