linux-kernel - Re: oops/warning report for the week of November 26, 2008

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: <20081127115236.GE29013@elte.hu>
Date:	Thu, 27 Nov 2008 12:52:36 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Arjan van de Ven <arjan@...ux.intel.com>,
	Yinghai Lu <yinghai@...nel.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	NetDev <netdev@...r.kernel.org>, x86@...nel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Theodore Ts'o <tytso@....edu>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	jesse Barnes <jbarnes@...tuousgeek.org>
Subject: Re: oops/warning report for the week of November 26, 2008


* Arjan van de Ven <arjan@...ux.intel.com> wrote:

> Rank 8: mtrr_trim_uncached_memory (warning)
> 	Reported 227 times (619 total reports)
> 	There is a high number of machines where our MTRR checks 
> 	trigger. I suspect we are too picky in accepting the MTRR 
> 	configuration.

the warning here means: "the BIOS messed up but we fixed it up for 
you just fine".

Should we print a DMI descriptor so that it can be tracked back to the 
bad BIOSen in question? Or should we (partially) silence the warning 
itself? Those BIOS bugs need fixing really: older kernels will boot up 
with bad MTRR settings - resulting in a super-slow system or other 
weirdnesses. We can tone down the message so that it doesnt show up in 
kerneloops.org. It's up to you.

	Ingo
--
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/