Date: Fri, 27 Jul 2007 15:33:42 +0200 From: Milos Vyletel <mv@rulez.sk> To: Kris Kennaway <kris@obsecurity.org> Cc: current@freebsd.org Subject: Re: ULE status, invalid load, buildkernel times. Message-ID: <20070727133342.GA12179@rulez.sk> In-Reply-To: <20070727132640.GA6877@rot26.obsecurity.org> References: <20070721174631.S561@10.0.0.1> <20070722114846.GA97996@rulez.sk> <20070722121631.GA8336@rulez.sk> <200707261806.20554.peter@wemm.org> <20070727074832.GA69608@rulez.sk> <20070727132640.GA6877@rot26.obsecurity.org>
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On Fri, Jul 27, 2007 at 09:26:40AM -0400, Kris Kennaway wrote: > On Fri, Jul 27, 2007 at 09:48:32AM +0200, Milos Vyletel wrote: > > On Thu, Jul 26, 2007 at 06:06:20PM -0700, Peter Wemm wrote: > > > The other option is to find the kernel.debug for this crash, and do > > > this: > > > kgdb kernel.debug > > > gdb> l *0xffffffff8033953c > > > This will tell us the file and line number that the crash happened in. > > > There is no need to reboot for this unless you no longer have a > > > crashing kernel. > > > > I've played with this a little while, and after turning INVARIANTS on, it > > paniced in lapic_ipi_raw() on the > > KASSERT(lapic != NULL, ("%s called too early", __func__)); > > > > so I assume, that this function was called before lapic_init(), where lapic is initialized, which is wrong. > > > > It was clean current kernel with no other patches, now I don't have local > > access to that machine so I can test it in few days. > > > > btw. how can one get trace in text form, I mean syslog stop after panic and all > > I got logged is that it paniced. Anything I type in db> is lost. I know that > > this can be done by remote gdb, but unfortunatelly this isn't possible. > > If you trigger a dump (call doadump) then some amount of the DDB > session will usually be saved with the dump and displayed by kgdb. > Yes, I forgot about that. I have zfs swap partition and I can't configure my dumpdev. Have anyone succesfully acomplish this? mv
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