Date: Wed, 11 Nov 2009 22:15:18 +0300 From: S.N.Grigoriev <serguey-grigoriev@yandex.ru> To: Mark Atkinson <atkin901@yahoo.com> Cc: freebsd-current@freebsd.org Subject: Re: 8.0RC2 amd64 - kernel panic running make buildworld Message-ID: <941257966918@webmail42.yandex.ru> In-Reply-To: <hdc73v$4rt$1@ger.gmane.org> 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>
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10.11.09, 09:15, "Mark Atkinson" <atkin901@yahoo.com> wrote: > Andriy Gapon wrote: > > 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. > > > > I would re-test vm.pmap.pg_ps_enabled=0 just to be sure that it was correctly teh > > first time. > > I would try to see how 8.0-RC1 kernel behaves and in general try to find last > > working, first non-working version. > > It would be useful to know any (if any) non-default loader.conf and rc.conf > > settings or kernel config (if not GENERIC). > > > > Not a trivial issue unless it is hardware indeed. > > > Also, you can try adding: > hw.mca.enabled="1" in /boot/loader.conf, reboot, and then see if there > is a machine check exception on the console during the buildworld. Mark, I've added hw.mca.enabled="1" in /boot/loader.conf and got the following screen during the buildworld: ..... -c /usr/src/gnu/usr.bin/binutils/as/../../../../contrib/binutils/gas/sb.c MCA: CPU3 UNCOR PCC OVER DTLIB L1 error MCA: Address 0x8015fb000 Fatal trap 28: machine check trap while in user mode Fatal trap 28: machine check trap while in user mode cpuid = 3, apic id = 03 ..... etc. I've typed 'panic' at the 'db>' prompt but got no crash dump. Tell me please what can I do for further problem investigation. -- Regards, S.Grigoriev.
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