when I use the crash tool to analysis the ram dump of linux4.4 on arm64,it failed，is someone can help me？the error information as follow。
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Port_COM151$ crash64 vmlinux DDRCS0_0.BIN@0x00000000e0000000,DDRCS1_0.BIN@0x0000000080000000
crash64 7.1.9
Copyright (C) 2002-2016 Red Hat, Inc.
Copyright (C) 2004, 2005, 2006, 2010 IBM Corporation
Copyright (C) 1999-2006 Hewlett-Packard Co
Copyright (C) 2005, 2006, 2011, 2012 Fujitsu Limited
Copyright (C) 2006, 2007 VA Linux Systems Japan K.K.
Copyright (C) 2005, 2011 NEC Corporation
Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc.
Copyright (C) 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 (GDB) 7.6
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-unknown-linux-gnu --target=aarch64-elf-linux"...
crash64: read error: kernel virtual address: ffffff8ed5cccef0 type: "possible"
WARNING: cannot read cpu_possible_map
crash64: read error: kernel virtual address: ffffff8ed5cccee8 type: "present"
WARNING: cannot read cpu_present_map
crash64: read error: kernel virtual address: ffffff8ed5ccced8 type: "online"
WARNING: cannot read cpu_online_map
crash64: read error: kernel virtual address: ffffff8ed5cccef8 type: "active"
WARNING: cannot read cpu_active_map
crash64: read error: kernel virtual address: ffffff8ed5cccee8 type: "cpu_present_map"
crash64: read error: kernel virtual address: ffffff8ed5ccced8 type: "cpu_online_map"
crash64: read error: kernel virtual address: ffffff8ed5ccced8 type: "cpu_online_map"
crash64: read error: kernel virtual address: ffffff8ed5ccced8 type: "cpu_online_map"
Segmentation fault (core dumped)
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