From owner-freebsd-alpha  Mon Jul  5 18:53:21 1999
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Date: Mon, 5 Jul 1999 18:53:10 -0700 (PDT)
From: Matthew Jacob <mjacob@feral.com>
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To: Steve Price <sprice@hiwaay.net>
Cc: freebsd-alpha@FreeBSD.ORG
Subject: Re: panic in recent kernel
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Brain idiocy on my part. I couldn't figure out why this kept panic'ing for
ccdconfig when I hadn't config'd ccd in. It turns out there *are* .ko
modules in /modules- they're way out of date because the interfaces
changed.

phk rev'd the kernel version, but that didn't stop the modules from
loading. Somebody file the appropriate bugs.


On Mon, 5 Jul 1999, Steve Price wrote:

> To followup on my own post I rebuilt a kernel with debugging
> symbols and DDB.  Here's what I get now.
> 
> Preloader elf kernel "kernel" at 0xfffffc000060a000.
> 
> fatal kernel trap:
> 
>     trap entry = 0x2 (memory management fault)
>     a0         = 0x168
>     a1         = 0x1
>     a2         = 0x0
>     pc         = 0xfffffc0000361c3c
>     ra         = 0xfffffc0000361de8
>     curproc    = 0xfffffc00005a97f0
>         pid = 0, comm = swapper
> 
> ddbprinttrap from 0xfffffc0000361c3c
> ddbprinttrap(0x168, 0x1, 0x0, 0x2)
> panic: trap
> panic
> Stopped at	Debugger+0x2c:	ldq	ra,0(sp) <0xfffffc000060faf0>	<ra=0xfffffc00004cc8a0,sp=0xfffffc000060faf0>
> db> 
> 
> Unfortunately I'm unable to type in anything at the prompt.
> Every character results in a carriage return and a new prompt. :/
> 
> It appears the problem is somewhere in cdevsw_add and may be
> related to Poul-Henning's commit to "Remove cmaj and bmaj args
> from DEV_DRIVER_MODULE."
> 
> $ nm /kernel.debug | grep fffffc0000361 | sort
> fffffc0000361040 T nanouptime
> fffffc0000361100 t tco_setscales
> fffffc0000361160 T update_timecounter
> fffffc0000361180 T init_timecounter
> fffffc0000361320 T set_timecounter
> fffffc00003613c0 t sync_other_counter
> fffffc00003614a0 t tco_forward
> fffffc0000361680 T pps_ioctl
> fffffc0000361800 T pps_init
> fffffc0000361840 T pps_event
> fffffc0000361a20 T chrtoblk
> fffffc0000361ac0 T devsw
> fffffc0000361b00 T bdevsw
> fffffc0000361be0 T cdevsw_add
> fffffc0000361d20 T cdevsw_remove
> fffffc0000361da0 T devsw_module_handler
> fffffc0000361ea0 T major
> fffffc0000361ec0 T minor
> fffffc0000361ee0 T makebdev
> fffffc0000361f20 T makedev
> fffffc0000361f40 T dev2udev
> fffffc0000361fa0 T udev2dev
> $ 
> 
> -steve
> 
> 
> 
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