Date: Tue, 10 Nov 2009 18:48:21 +0100 From: Kai Gallasch <gallasch@free.de> To: freebsd-current@freebsd.org Cc: Andriy Gapon <avg@icyb.net.ua> Subject: Re: 8.0RC2 amd64 - kernel panic running make buildworld Message-ID: <20091110184821.4f58a0bf@orwell.free.de> In-Reply-To: <4AF99D53.9030005@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>
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Am Tue, 10 Nov 2009 19:05:23 +0200 schrieb Andriy Gapon <avg@icyb.net.ua>: > on 10/11/2009 17:22 gary.jennejohn@freenet.de said the following: > > Well, OK, I may have misinterpreted what you wrote or have chosen > > bad wording myself to convey the same message. Nonetheless it > > looks like a hardware problem to me. > > [Trying to make up for my previous mistake.] > > The symptom certainly looks like misbehaving hardware, but other > information from the reports seems to suggest that it is possible > that this misbehavior might be caused by software misconfiguring the > hardware. Hi. This thread was started by me. In the meantime I filed a PR: http://www.freebsd.org/cgi/query-pr.cgi?pr=140338 > I would re-test vm.pmap.pg_ps_enabled=0 just to be sure that it was > correctly teh first time. I toggled vm.pmap.pg_ps_enabled three times between reboots and the result is always the same. superpages enabled: reboot, superpages not enabled: server stable > I would try to see how 8.0-RC1 kernel behaves and in general try to > find last working, first non-working version. 8.0RC1, 8.0BETA4 already showed the same behaviour > It would be useful to know any (if any) non-default loader.conf and > rc.conf settings or kernel config (if not GENERIC). loader.conf untouched, rc.conf had just settings for networking active when testing. In the end I enabled some other stuff to have it ready for 8.0 RELEASE, *after* I found out that disabling superpages helped against the crashes. Ah yes. I also ran memtest86 on the server for about half a day - no problems. But read for yourself in the PR. I don't rule out that this behaviour with vm.pmap.pg_ps_enabled maybe hardware related, but why then is the server running stable with RELENG_7 and memtest and server diagnostics don't report any problem? --Kai. -- I am NOMAD!
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