Date: Thu, 12 Nov 2009 19:13:44 +0100 From: Kai Gallasch <gallasch@free.de> To: freebsd-current@freebsd.org Subject: Re: 8.0RC2 amd64 - kernel panic running make buildworld Message-ID: <20091112191344.09ccaff9@orwell.free.de> In-Reply-To: <4AFC14BE.7020106@icyb.net.ua> References: <1031257439203@webmail57.yandex.ru> <20091105184925.16b55c43@ernst.jennejohn.org> <31221257446063@webmail71.yandex.ru> <20091106101943.5a763f43@ernst.jennejohn.org> <41361257585651@webmail39.yandex.ru> <20091107115256.3df62bc3@ernst.jennejohn.org> <1257618758.1511.14.camel@RabbitsDen> <6511257846119@webmail85.yandex.ru> <20091110105856.1270038e@ernst.jennejohn.org> <1257864452.46072.25.camel@RabbitsDen> <20091110162205.48abcffe@ernst.jennejohn.org> <4AF99D53.9030005@icyb.net.ua> <hdc73v$4rt$1@ger.gmane.org> <941257966918@webmail42.yandex.ru> <hdf5u4$qfr$1@ger.gmane.org> <4AFC14BE.7020106@icyb.net.ua>
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Am Thu, 12 Nov 2009 15:59:26 +0200 schrieb Andriy Gapon <avg@icyb.net.ua>: > on 11/11/2009 22:13 Mark Atkinson said the following: > > > > Well, you're about at the point I am now with my HP dl385g5, only > > turning off superpages would result in a successful buildworld. > > Mine would often machine check during gas compilation as well. > > Mark, > > you mentioning MCA was magic moment for me. > I was debugging a problem which seemed to be quite different, but now > I think that it converges to the problem discussed in this thread (if > indeed it's the same problem for all reporters). > The difference is that I use a "consumer level" system based on > family 10h Athlon II and you use Opterons, seemingly also 10h or Fh > families. I guess that means that you and Kai both use "high > end"/"server grade" systems or some such. It's possible that > firmware/BIOS on your systems enables and monitors MCA by default, > even when the OS is not MCA-enabled. As such, I am curious if you > have any BIOS settings that look like being related to Machine > Check. Or perhaps there is something like Event Log in BIOS. Maybe > it even gets something useful. Could you please check? Hi. Here is one BIOS options on my server that is of possible interest to this kind of problem: Advanced Options -> Processor Options: No-Execute Page-Protection (DISABLED) "Enables the HW portion of a feature that allows systems to be protected against malicious code and viruses. In combination with an OS that supports this feature, memory is marked as non-executable unless the location explicitly contains executable code. Some viruses attempt to insert and execute code from non-executable memory locations. These attacks are intercepted and an exception is raised." --Kai.
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