Date: Tue, 10 Jul 2001 20:27:50 -0700 (PDT) From: Matthew Jacob <mjacob@feral.com> To: <alpha@FreeBSD.ORG> Subject: Re: [ alpha ] supplement to beast becoming available (fwd) Message-ID: <20010710202536.M9225-100000@wonky.feral.com>
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following up further on this- make sure you also don't have hints
set by the loader. That can also be bad if they get duplicated.
-matt
---------- Forwarded message ----------
Date: Sun, 8 Jul 2001 22:13:33 -0700 (PDT)
From: Matthew Jacob <mjacob@feral.com>
To: Matt Dillon <dillon@earth.backplane.com>
Cc: David O'Brien <obrien@FreeBSD.org>, Jordan Hubbard <jkh@osd.bsdi.com>,
developers@FreeBSD.org
Subject: Re: [ alpha ] supplement to beast becoming available
Uh, yeah, what've asked for.
Point to note- the RA is also important because if you don't have a DDB stack
trace, the RA can tell you where you've come from most reacently.
On Sun, 8 Jul 2001, Matt Dillon wrote:
>
> :isp0: <Qlogic ISP 1020/1040 PCI SCSI Adapter> port 0x8000-0x80ff mem 0x81010000-
> :0x81010fff irq 16 at device 9.0 on pci1
> :isp0: interrupting at CIA irq 16
> :atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
> :atkbd0: <AT Keyboard> irq 1 on atkbdc0
> :atkbd0: interrupting at ISA irq 1
> :atkbd1: <AT Keyboard> irq 1 on atkbdc0
> :
> :fatal kernel trap:
> :
> : trap entry = 0x2 (memory management fault)
> : faulting va = 0x60
> : type = access violation
> : cause = load instructon
> : pc = 0xfffffc00003f599c
> : ra = 0xfffffc0000549b5c
> : sp = 0xfffffc0000693408
> : usp = 0x0
> : curproc = 0xfffffc00006122e0
> : pid = 0, comm = swapper
> :
> :panic: trap
> :Uptime: 0s
> :Automatic reboot in 15 seconds - press a key on the console to abort
>
> This sure likes it ought to be easy to track down... you have what
> looks to be a null pointer dereference and a good PC. Just take the
> nm kernel.debug | sort output and locate the routine that pc resides
> in...
>
> -Matt
>
>
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