----- Original Message ----- > Hi, list. > > I use crash-utility to analyse crash dump core from ARM soc. When I > execute command below, I get the error "crash: read error: kernel > virtual address: c0c1e040 type: "first vmap_area va_start"". I also > test it by gdb. It works fine. The Linux kernel's version is v3.0.8. > > hfli@pc1935:~/work/crash-utility$ ./crash vmlinux Vmcore > > crash 6.1.4 > Copyright (C) 2002-2013 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) 7.3.1 > Copyright (C) 2011 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=i686-pc-linux-gnu --target=arm-elf-linux"... > > crash: read error: kernel virtual address: c0c1e040 type: "first vmap_area va_start" > > Errors like the one above typically occur when the kernel and memory source > do not match. These are the files being used: > > KERNEL: vmlinux > DUMPFILE: Vmcore You've answered your own question -- you should always see errors if the vmlinux kernel does not match the kernel crashed system. If you cannot find/access the original vmlinux file that was being run by the crashed kernel, then get the /boot/System.map file of the crashed kernel, and enter it on the command line: $ crash vmlinux Vmcore System.map The crash utility will replace all of the invalid symbol values from the "wrong" vmlinux file with their correct values from the System.map file. Dave -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility
