netdev - Re: [PATCH net-next 5/5] net: sctp: fix incorrect type in gfp initializer

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 18 Jun 2014 14:30:58 -0400
From:	Tejun Heo <tj@...nel.org>
To:	David Laight <David.Laight@...LAB.COM>
Cc:	'Alexei Starovoitov' <alexei.starovoitov@...il.com>,
	Daniel Borkmann <dborkman@...hat.com>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-sctp@...r.kernel.org" <linux-sctp@...r.kernel.org>
Subject: Re: [PATCH net-next 5/5] net: sctp: fix incorrect type in gfp
 initializer

On Thu, Jun 12, 2014 at 08:46:44AM +0000, David Laight wrote:
> I was slightly worried it might generate the boolean value - something
> that you really don't want it to do.

I don't think gcc is that stupid at this point.

> I only looked at the output for the old version.
> The compiler seemed to have converted:
> 	if (preload)
> 		x();
> 	y;
> 	if (preload)
> 		z();
> into:
> 	if (preload) {
> 		x(); y; z();
> 	} else {
> 		y;
> 	}
> and then found out that z() was empty, leaving two copies of y().

So, nothing wrong, right?

-- 
tejun
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html