Date: Tue, 10 Nov 2009 09:47:32 -0500 From: "Alexandre \"Sunny\" Kovalenko" <gaijin.k@gmail.com> To: gary.jennejohn@freenet.de Cc: "S.N.Grigoriev" <serguey-grigoriev@yandex.ru>, freebsd-current@freebsd.org Subject: Re: 8.0RC2 amd64 - kernel panic running make buildworld Message-ID: <1257864452.46072.25.camel@RabbitsDen> In-Reply-To: <20091110105856.1270038e@ernst.jennejohn.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>
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On Tue, 2009-11-10 at 10:58 +0100, Gary Jennejohn wrote: > On Tue, 10 Nov 2009 12:41:59 +0300 > S.N.Grigoriev <serguey-grigoriev@yandex.ru> wrote: > > > I followed your tips. The kernel configuration now contains options DDB > > and KDB. The sysctl variable 'debug.debugger_on_panic' is set to '1'. > > After the 'sysctl debug.kdb.panic=1' command the debugger prompt > > appears. > > To have a crash dump I should type 'panic' on the debugger prompt. > > If I type 'reboot' instead, there are no crash dumps. Is that behaviour > > correct? > > > > In this case yes, because you forced the panic by setting the sysctl. > > > Another question: must all panics go to the bebugger prompt? > > > > They should, if the kernel itself causes the panic. As Alexandre > wrote, a hardware problem probably would not cause a kernel panic. I really hope I have not written anything like that ;-) I have seen plenty of panics induced by hardware problems -- from faulty memory to overheated CPU and beyond. What I was trying to say that a reboot *without a panic* is more likely a hardware problem than not. -- Alexandre Kovalenko (Олександр Коваленко)
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