linux-kernel - Re: [PATCH v2 5/5] bug: Make BUG() call unreachable()

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:	Thu, 27 Feb 2014 20:19:47 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Josh Triplett <josh@...htriplett.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 5/5] bug: Make BUG() call unreachable()

On Wednesday 26 February 2014, Josh Triplett wrote:
> This doesn't seem any different than compiling out assert() at runtime
> in a userspace program, given how the kernel uses BUG() and BUG_ON().
> I'd argue that adding unreachable() doesn't seem like it makes the
> current implementation of BUG() any worse; either way if you reach it
> you have a problem.

I think it's better to get a warning about undefined behavior than
to suppress that warning.

	Arnd
--
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/