linux-kernel - Re: [PATCH 46/61] fix Intel RNG detection

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:	Mon, 20 Nov 2006 18:45:35 -0500
From:	Dave Jones <davej@...hat.com>
To:	Chris Wright <chrisw@...s-sol.org>
Cc:	linux-kernel@...r.kernel.org, stable@...nel.org,
	Justin Forbes <jmforbes@...uxtx.org>,
	Zwane Mwaikambo <zwane@....linux.org.uk>,
	"Theodore Ts'o" <tytso@....edu>,
	Randy Dunlap <rdunlap@...otime.net>,
	Chuck Wolber <chuckw@...ntumlinux.com>,
	Chris Wedgwood <reviews@...cw.f00f.org>,
	Michael Krufky <mkrufky@...uxtv.org>, torvalds@...l.org,
	akpm@...l.org, alan@...rguk.ukuu.org.uk,
	Jan Beulich <jbeulich@...ell.com>,
	Metathronius Galabant <m.galabant@...glemail.com>,
	Michael Buesch <mb@...sch.de>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: Re: [PATCH 46/61] fix Intel RNG detection

On Tue, Oct 31, 2006 at 09:34:26PM -0800, Chris Wright wrote:
 
 > From: Jan Beulich <jbeulich@...ell.com>
 > 
 > [PATCH] fix Intel RNG detection
 > 
 > Previously, since determination whether there was an Intel random number
 > generator was based on a single bit, on systems with a matching bridge
 > device but without a firmware hub, there was a 50% chance that the code
 > would incorrectly decide that the system had an RNG.  This patch adds
 > detection of the firmware hub to better qualify the existence of an RNG.
 > 
 > There is one issue with the patch: I was unable to determine the LPC
 > equivalent for the PCI bridge 8086:2430 (since the old code didn't care
 > about which of the many devices provided by the ICH/ESB it was chose to use
 > the PCI bridge device, but the FWH settings live in the LPC device, so the
 > device list needed to be changed).
 > 
 > Signed-off-by: Jan Beulich <jbeulich@...ell.com>
 > Signed-off-by: Michael Buesch <mb@...sch.de>
 > Signed-off-by: Andrew Morton <akpm@...l.org>
 > Signed-off-by: Linus Torvalds <torvalds@...l.org>
 > Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
 > Signed-off-by: Chris Wright <chrisw@...s-sol.org>


Since I pushed an update to our Fedora users based on 2.6.18.2, a few people
have reported they no longer have their RNG's detected.
Here's one report: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=215144

		Dave

-- 
http://www.codemonkey.org.uk
-
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/