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Date:      Sun, 16 Nov 2003 05:49:14 +0100
From:      Harald Schmalzbauer <h@schmalzbauer.de>
To:        Robert Watson <rwatson@freebsd.org>
Cc:        current@freebsd.org
Subject:   Re: kernel panic with todays source
Message-ID:  <200311160549.14917@harrymail>
In-Reply-To: <Pine.NEB.3.96L.1031115233217.25438Z-100000@fledge.watson.org>
References:  <Pine.NEB.3.96L.1031115233217.25438Z-100000@fledge.watson.org>

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On Sunday 16 November 2003 05:34, Robert Watson wrote:
> On Sun, 16 Nov 2003, Harald Schmalzbauer wrote:
> > Fatal trap 12   :page fault while in kernel mode
> > fault virtual address   =3D0x24
> > fault code              =3Dsupervisor read, page not present
> > instruction pointer     =3D0x8:0xc056c706
> > stack pointer           =3D0x10:0xcdca4ca4
> > frame pointer           =3D0x10:0xcdca4ca4
> > code segment            =3Dbase 0x0, limit 0xfffff, type 0x1b
> >                         =3DDPL 0, pres 1, def32 1, gran 1
> > processor eflags        =3Dresume, IOPL=3D0
> > current process         =3D11 (idle)
> > trap number             =3D12
> > panic: page fault
> >
> > I do have compiled the kernel with makeoptions debug but I don't have a
> > serial terminal nor firewire.
>
> Could you show the output from running the following command in "gdb -k
> kernel.debug":
>
>   l *0xc056c706
>
> This will tell us where in the kernel the instruction pointer in question
> was.  For whatever reason, your kernel panic doesn't seem to have dropped
> you into DDB (at least, the output looks that way).  If you did get into
> ddb, the results of the "trace" command would be very helpful.  As you
> have no serial console, it's probably sufficient to just transcript the

I think for this I need to set "options DDB" in my kernel, don't I? But=20
without serial terminal this is pretty useless I think.
But I'll do if you can get needed information which was otherwise not=20
accessable.

Thanks,

=2DHarry

> offsets at the end of each line in the trace (functioname+0xOFFSET)
> without the argument entries.
>
> Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
> robert@fledge.watson.org      Network Associates Laboratories

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