[Crash-utility] Crash, won't read my vmcore "crash: page excluded: kernel virtual address:"

[Tory M Blue]

[root at kvm7 127.0.0.1-2014-02-07-19:17:09]# crash
/boot/System.map-2.6.32-220.el6.x86_64.debug
 /usr/lib/debug/lib/modules/2.6.32-220.el6.x86_64.debug/vmlinux vmcore

crash 5.1.8-1.el6
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crash: page excluded: kernel virtual address: ffffffff81542000  type:
"cpu_possible_mask"

I can go into minimal,


 nm -Bn /usr/lib/debug/lib/modules/2.6.32-220.el6.x86_64.debug/vmlinux  |
grep _stext
ffffffff81000198 T _stext

 cat /proc/kallsyms | grep _stext
ffffffff81000198 T _stext

If I use the System Map parm I get this warning

WARNING: kernels compiled by different gcc versions:
  /usr/lib/debug/lib/modules/2.6.32-220.el6.x86_64.debug/vmlinux: 4.4.5
  vmcore kernel: 4.4.6


Would really like to understand why this system crashed. I know I'm a bit
behind on my kernel versions however, but I should be able to look at this
kernel??

Thanks
Tory
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