linux-kernel - Re: dcache shrink list corruption?

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]

Message-ID: <CAELBmZBhXDdtjAiK16qJex7deY1SB-2uED3DfjRGhGN4RrYFaw@mail.gmail.com>
Date:	Fri, 2 May 2014 10:43:20 +0200
From:	Szeredi Miklos <miklos@...redi.hu>
To:	Al Viro <viro@...iv.linux.org.uk>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Dave Chinner <david@...morbit.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>
Subject: Re: dcache shrink list corruption?

On Thu, May 1, 2014 at 4:34 PM, Al Viro <viro@...iv.linux.org.uk> wrote:
> On Thu, May 01, 2014 at 11:42:52AM +0200, Miklos Szeredi wrote:

>> - "bool foo = flag & FLAG" looks suspicious.  Is this guaranteed not to
>>   overflow?
>
> What do you mean, overflow?  It's not a 1-bit unsigned int; conversion to
> _Bool is different (which is the only reason why it's more than mere
> syntax sugar).  See C99 6.3.2.1 ("When any scalar value is converted
> to _Bool, the result is 0 if the value compares equal to 0; otherwise,
> the result is 1").

Ah, didn't know that.

Thanks,
Miklos
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/