Date: Tue, 18 Nov 2003 17:26:12 -0500 From: Garance A Drosihn <drosih@rpi.edu> To: des@des.no (Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?= ) Cc: sparc64@freebsd.org Subject: Re: ultra5/cmd646 hang Message-ID: <p0600202cbbe04a3aa321@[128.113.24.47]> In-Reply-To: <xzpbrraxdii.fsf@dwp.des.no> References: <20031114105853.A92204@carver.gumbysoft.com> <20031114134001.D92204@carver.gumbysoft.com> <20031117130205.R22102@carver.gumbysoft.com> <p06002021bbdf0a93b762@[128.113.24.47]> <xzpbrraxdii.fsf@dwp.des.no>
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At 9:54 AM +0100 11/18/03, Dag-Erling Sm=F8rgrav wrote:
>Garance A Drosihn <drosih@rpi.edu> writes:
> > Well, for what it's worth I hit something vaguely similar
> > on my Ultra-10 [...]
> > Unfortunately, I then mistakenly blew away my working
> > kernel, so right now I can't boot up the machine at all. [...]
>
>Just disable DMA in the loader (set hw.ata.ata_dma=3D0) and boot
>your new kernel. Slow as hell, but it works.
Okay, I tried that. It did not print out the
ata3: resetting devices ..
message, but it died with a panic:
panic: trap: memory address not aligned
Debugger("panic")
Stopped at Debugger+0x1c: ta %xc, 1
db> trace
panic() at panic+0xf0
trap() at trap+0x394
-- memory address not aligned sfar=3D0xdedeadc0ee sfsr=3D0x40029=
%o7=3D0xc007ec28 --
ata_prtdev() at ata_prtdev+0x14
ata_timeout() at ata_timeout+0x130
softclock() at softclock+0x1a0
ithread_loop() at ithread_loop+0x1b8
fork_exit() at fork_exit+0x84
fork_trampoline() at fork_trampoline+0x8
I know nothing about lower-level sparc64 debugging, so I am
probably stuck at this point.
It will not be much of a problem if I have to reinstall this
system, so don't worry too much about this situation until I
get back to some kind of bootable system. Thanks for the
suggestion though. it would have been nice if it had worked!
--
Garance Alistair Drosehn =3D gad@gilead.netel.rpi.edu
Senior Systems Programmer or gad@freebsd.org
Rensselaer Polytechnic Institute or drosih@rpi.edu
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