Date: Wed, 26 Feb 2003 23:15:16 +0100 From: Philip Paeps <philip@paeps.cx> To: alpha@FreeBSD.ORG Subject: Re: Panic on boot? Message-ID: <20030226221516.GB1930@juno.home.paeps.cx> In-Reply-To: <15965.14869.445380.268641@grasshopper.cs.duke.edu> References: <20030226211435.GB627@juno.home.paeps.cx> <15965.12175.390447.175953@grasshopper.cs.duke.edu> <20030226220020.GA1930@juno.home.paeps.cx> <15965.14869.445380.268641@grasshopper.cs.duke.edu>
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On 2003-02-26 17:05:09 (-0500), Andrew Gallatin <gallatin@cs.duke.edu> wrote: > Philip Paeps writes: > > I was doing that as I wrote my message. Unfortunately, the compiler takes > > quite a bit longer to compile an Alpha kernel than I need to type a short > > message :-) > > And it was totally useless advice, because the PC is zero. sorry! Not to worry :-) > Something followed a null function pointer. Eek! So that's what that message means. Is there a 'quick primer on debugging kernels' somewhere to be found? I would find that _very_ interesting literature! > > pc = 0x0 > > ra = 0xfffffc000038a7cc > > Can you please find the ra? fffffc000038a390 T ata_dmastop fffffc000038a5f0 t ata_dmastatus fffffc000038a690 T atapi_attach fffffc000038a860 T atapi_detach fffffc000038a9b0 T atapi_queue_cmd fffffc000038ac10 T atapi_start fffffc000038ac60 T atapi_transfer > If you have a kernel.debug, do > > % gdb kernel.debug > <...> > (gdb) l *0xfffffc000038a7cc Building one of those would take slightly longer than just adding DDB and DDB_TRACE, I think :) > If you don't have a kernel.debug, do an "nm -n /boot/kernel/kernel | less" > and look for the address range that 0xfffffc000038a7cc is in. The exact address wasn't there, but I pasted everything that was 'mathematically' around it above. Hope that helps! - Philip -- Philip Paeps Please don't CC me, I am philip@paeps.cx subscribed to the list. The only game that can't be fixed is peek-a-boo. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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