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To: Mitch Parks <mitch@kuoi.asui.uidaho.edu>
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Cc: freebsd-stable@freebsd.org
Subject: Re: Kernel debugging, 5.4-RELEASE
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On Tue, 2 Aug 2005, Mitch Parks wrote:

> man kgdb
> http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug-gdb.html

Thank you. I'm using kgdb now, and I get the following error:

$ kgdb -r /dev/cuaa0 kernel.debug
[GDB will not be able to debug user-mode threads:
/usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"]
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 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 "i386-marcel-freebsd".
Switching to remote protocol
0xc035646c in kdb_enter ()
Segmentation fault

The two servers (the panic one and the one running kgdb) are identical,
except the one running kgdb is not using PAE. The kernel.debug file is
identical to the remote server however.