Date: Wed, 15 May 2002 19:48:14 -0700 From: Kris Kennaway <kris@obsecurity.org> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: Kris Kennaway <kris@obsecurity.org>, alpha@FreeBSD.ORG Subject: Re: memory management fault during netbooting on 4.6-PRERELEASE Message-ID: <20020515194814.A98844@xor.obsecurity.org> In-Reply-To: <15586.63656.192672.240973@grasshopper.cs.duke.edu>; from gallatin@cs.duke.edu on Wed, May 15, 2002 at 08:09:12PM -0400 References: <20020514235608.A69014@xor.obsecurity.org> <15586.25465.541559.66681@grasshopper.cs.duke.edu> <20020515165719.A94539@xor.obsecurity.org> <15586.63656.192672.240973@grasshopper.cs.duke.edu>
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[-- Attachment #1 --] On Wed, May 15, 2002 at 08:09:12PM -0400, Andrew Gallatin wrote: > > Kris Kennaway writes: > > On Wed, May 15, 2002 at 09:32:41AM -0400, Andrew Gallatin wrote: > > > > > > Kris Kennaway writes: > > > > I'm seeing the following on the alpha package cluster when trying to > > > > netboot a 4.6-PRERELEASE kernel: > > > > > > <...> > > > > > > > pc = 0x0 > > > > ra = 0xfffffc000056bcc0 > > > > > > Something followed a null function pointer. > > > > > > Can you run gdb on the corresponding kernel.debug & see what > > > 'list *0xfffffc000056bcc0' shows for the caller? > > > > Unfortunately I'm not getting a crashdump because it's happening > > during the boot process. > > We're just using gdb to translate that address to a line number, so > you don't need a crashdump; just do what I asked. Here's an example: The reason I thought I needed a crashdump is because when I do that command I get this: axp0# gdb kernel.debug GNU gdb 4.18 Copyright 1998 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "alpha-unknown-freebsd"... (gdb) l *0xfffffc000056bcc0 No source file for address 0xfffffc000056bcc0. Kris [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (FreeBSD) iD8DBQE84x3uWry0BWjoQKURArVLAJ9LDjvX4iWZf9x24M79W/R3m2y22QCeORM/ +1zEwjFra3onl5RiL4/6Ad8= =oRId -----END PGP SIGNATURE-----
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