Date: Thu, 15 Nov 2001 23:11:16 +0100 From: Dirk Froemberg <dirk@FreeBSD.ORG> To: "Kenneth D. Merry" <ken@kdm.org> Cc: stable@FreeBSD.ORG, phk@FreeBSD.ORG Subject: Re: kernel panic if using SCSI CDROM as root device Message-ID: <20011115231115.B84012@physik.TU-Berlin.DE> In-Reply-To: <20011115145615.A34719@panzer.kdm.org>; from ken@kdm.org on Thu, Nov 15, 2001 at 02:56:15PM -0700 References: <20011115003027.A87962@physik.TU-Berlin.DE> <20011115120432.A18404@physik.TU-Berlin.DE> <20011115145615.A34719@panzer.kdm.org>
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Hi Kenneth!
On Thu, Nov 15, 2001 at 02:56:15PM -0700, Kenneth D. Merry wrote:
> [...]
> Can you find out what line of code in dsioctl is causing the problem?
>
> If you built a debug kernel, you can do the following:
>
> gdb -k kernel.debug
> list *(dsioctl+0x42)
>
> That should indicate which line in dsioctl is blowing up.
Yes, of course:
% gdb -k kernel.debug
GNU gdb 4.18
[...]
(kgdb) list *(dsioctl+0x42)
0xc01b5216 is in dsioctl (/usr/src/sys/kern/subr_diskslice.c:357).
352 struct partition *pp;
353
354 slice = dkslice(dev);
355 ssp = *sspp;
356 sp = &ssp->dss_slices[slice];
357 lp = sp->ds_label;
358 switch (cmd) {
359
360 case DIOCGDVIRGIN:
361 lp = (struct disklabel *)data;
(kgdb)
Regards Dirk
--
Dirk Froemberg
FreeBSD: The Power to Serve! http://www.FreeBSD.org/
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