[Crash-utility] crash: invalid structure member offset

Hi Everyone, I am trying to read a core file into crash, but I've got bad luck as you can see below. Is core file corrupt? It is a vmcore file from a 32 bits kernel that was compiled with PAE, could that have corrupted things? Any hints here? Thanks, Reinoud. $ crash System.map-2.6.27 ./vmlinux-2.6.27 ./vmcore crash 4.0-3.7 Copyright 2002, 2003, 2004, 2005, 2006 Red Hat, Inc. Copyright 2004, 2005, 2006 IBM Corporation Copyright 1999-2006 Hewlett-Packard Co Copyright 2005 Fujitsu Limited Copyright 2005 NEC Corporation Copyright 1999, 2002 Silicon Graphics, Inc. Copyright 1999, 2000, 2001, 2002 Mission Critical Linux, Inc. This program 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. Enter "help copying" to see the conditions. This program has absolutely no warranty. Enter "help warranty" for details. GNU gdb 6.1 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 "i686-pc-linux-gnu"... please wait... (gathering kmem slab cache data) crash: invalid structure member offset: kmem_cache_s_c_num FILE: memory.c LINE: 6891 FUNCTION: kmem_cache_init() [/usr/bin/crash] error trace: 80827a9 => 8095398 => 80aa7ef => 8131e88 /usr/bin/nm: /usr/bin/crash: no symbols /usr/bin/nm: /usr/bin/crash: no symbols /usr/bin/nm: /usr/bin/crash: no symbols /usr/bin/nm: /usr/bin/crash: no symbols WARNING: Because this kernel was compiled with gcc version 4.1.2, certain commands or command options may fail unless crash is invoked with the "--readnow" command line option.