linux-kernel - Re: arm checkstack

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:	Tue, 4 Nov 2008 18:35:24 +0100
From:	Jörn Engel <joern@...fs.org>
To:	Matthieu CASTET <matthieu.castet@...rot.com>
Cc:	Linux Arm Mailing List <linux-arm-kernel@...ts.arm.linux.org.uk>,
	linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: Re: arm checkstack

On Tue, 4 November 2008 17:06:28 +0100, Matthieu CASTET wrote:
> 
> I wonder why the arm version of checkstack only catch stack size >= 300
> and < 10000 [1].
> Why doesn't it use ".*sub.*sp, sp, #([0-9]{1,8})" to catch all stack usage ?

Looks like a bug.  And it further looks like Holger just copied what
everyone else did at the time.  And the one who started this strange
pattern was: Arnd.

Arnd, did you have a good reason for choosing the pattern?

> [1]
> $re = qr/.*sub.*sp, sp, #(([0-9]{2}|[3-9])[0-9]{2})/o;

Jörn

-- 
The cost of changing business rules is much more expensive for software
than for a secretaty.
-- unknown
--
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/