Re: [Crash-utility] The problems when running SuSE 12 on VirtualBox

Hi Dave, >> (2) "machine type mismatch" >> WARNING: machine type mismatch: >> crash utility: X86_64 >> /var/tmp/xen-4.5.1_10-1.gz_E5lLat: X86 >> >> But according to "uname -a": >> >> # uname -a >> Linux linux-6ev3 3.12.49-6-xen #1 SMP Mon Oct 26 16:05:37 UTC 2015 >> (11560c3) x86_64 x86_64 x86_64 GNU/Linux >> >> The running SuSE is also a 64-bit OS, so whether can remove these warnings? > The mismatch message says that "/var/tmp/xen-4.5.1_10-1.gz_E5lLat" is an X86 > 32-bit binary. You cannot use a 32-bit xen binary with a 64-bit crash utility > binary. > Run "gunzip xen-4.5.1_10-1.gz", and then run "file" on the uncompressed file. > If it's a 32-bit binary, and the dumpfile came from that kernel, then you need > to use a 32-bit crash utility binary. If the dumpfile came from a 64-bit kernel, > then you're using the wrong xen binary. According to this post(http://lists.xen.org/archives/html/xen-users/2015-10/msg00141.html), although the xen file is 32-bit, it is the correct file for running on 64-bit OS. So I am not sure it should be considered as a bug.

>> (3) >> >> WARNING: could not find MAGIC_START! >> WARNING: cannot read linux_banner string >> crash: /var/tmp/vmlinux-3.12.49-6-xen.gz_FjRFMJ and /dev/mem do not match! >> >> How can I fix this issue and run crash on SuSE? > For starters, make sure the kernel, the dumpfile, and the crash binary are all > 32-bit or all 64-bit, whichever is appropriate. # which crash /usr/bin/crash # file /usr/bin/crash /usr/bin/crash: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 3.0.0, BuildID[sha1]=e6f9921f98c5b4daedd8dac798c139b77676b588, stripped Using "crash /boot/vmlinux-3.12.49-6-xen.gz /proc/kcore" works OK:

# file /proc/kcore /proc/kcore: ELF 64-bit LSB core file x86-64, version 1 (SYSV), SVR4-style, from 'root=UUID=ed63d5d7-1d2f-45ea-a77b-5b3ae05c1c2e resume=/dev/sda1 splash=silent q' # crash /boot/vmlinux-3.12.49-6-xen.gz /proc/kcore crash 7.1.3 Copyright (C) 2002-2014 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 "x86_64-unknown-linux-gnu"... KERNEL: /boot/vmlinux-3.12.49-6-xen.gz DEBUGINFO: /usr/lib/debug/boot/vmlinux-3.12.49-6-xen.debug DUMPFILE: /proc/kcore CPUS: 1 DATE: Mon Nov 16 00:59:02 2015 UPTIME: 04:55:39 LOAD AVERAGE: 0.08, 0.03, 0.05 TASKS: 241 NODENAME: linux-6ev3 RELEASE: 3.12.49-6-xen VERSION: #1 SMP Mon Oct 26 16:05:37 UTC 2015 (11560c3) MACHINE: x86_64 (2596 Mhz) MEMORY: 855.2 MB PID: 7472 COMMAND: "crash" TASK: ffff880019ab6540 [THREAD_INFO: ffff880002dcc000] CPU: 0 STATE: TASK_RUNNING (ACTIVE) So I think all the files are 64-bits. Thanks! Best Regards Nan Xiao On Fri, Nov 13, 2015 at 10:54 PM, Dave Anderson <anderson(a)redhat.com&gt; wrote: > > > ----- Original Message ----- >> Hi all, >> >> Firstly, I am not sure whether posting this issue on this mailing list is appropriate, if not, >> please forgive me, thanks! >> >> I install SuSE Enterprise Linux 12 (Xen version) on VirtualBox, and want to use crash. >> Executing "crash" command, and the output likes this: >> >> # crash >> >> crash 7.1.3 >> Copyright (C) 2002-2014 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. >> >> crash: /boot/symtypes-3.12.49-6-xen.gz: original filename unknown >> Use "-f /boot/symtypes-3.12.49-6-xen.gz" on command line to prevent >> this message. >> >> crash: /boot/symtypes-3.12.49-6-default.gz: original filename unknown >> Use "-f /boot/symtypes-3.12.49-6-default.gz" on command line to >> prevent this message. >> >> crash: /boot/xen-4.5.1_10-1.gz: original filename unknown >> Use "-f /boot/xen-4.5.1_10-1.gz" on command line to prevent this message. >> >> WARNING: machine type mismatch: >> crash utility: X86_64 >> /var/tmp/xen-4.5.1_10-1.gz_E5lLat: X86 >> >> crash: /boot/xen-4.5.gz: original filename unknown >> Use "-f /boot/xen-4.5.gz" on command line to prevent this message. >> >> WARNING: machine type mismatch: >> crash utility: X86_64 >> /var/tmp/xen-4.5.gz_0BL7f2: X86 >> >> crash: /boot/xen-4.gz: original filename unknown >> Use "-f /boot/xen-4.gz" on command line to prevent this message. >> >> WARNING: machine type mismatch: >> crash utility: X86_64 >> /var/tmp/xen-4.gz_PW97tB: X86 >> >> crash: /boot/xen-dbg-4.5.1_10-1.gz: original filename unknown >> Use "-f /boot/xen-dbg-4.5.1_10-1.gz" on command line to prevent this >> message. >> >> WARNING: machine type mismatch: >> crash utility: X86_64 >> /var/tmp/xen-dbg-4.5.1_10-1.gz_zcILOa: X86 >> >> crash: /boot/xen-dbg-4.5.gz: original filename unknown >> Use "-f /boot/xen-dbg-4.5.gz" on command line to prevent this message. >> >> WARNING: machine type mismatch: >> crash utility: X86_64 >> /var/tmp/xen-dbg-4.5.gz_AEpJfK: X86 >> >> crash: /boot/xen-dbg-4.gz: original filename unknown >> Use "-f /boot/xen-dbg-4.gz" on command line to prevent this message. >> >> WARNING: machine type mismatch: >> crash utility: X86_64 >> /var/tmp/xen-dbg-4.gz_np36Nj: X86 >> >> crash: /boot/xen-dbg.gz: original filename unknown >> Use "-f /boot/xen-dbg.gz" on command line to prevent this message. >> >> WARNING: machine type mismatch: >> crash utility: X86_64 >> /var/tmp/xen-dbg.gz_1tAiuT: X86 >> >> crash: /boot/xen.gz: original filename unknown >> Use "-f /boot/xen.gz" on command line to prevent this message. >> >> WARNING: machine type mismatch: >> crash utility: X86_64 >> /var/tmp/xen.gz_htZLuv: X86 >> >> crash: /boot/symvers-3.12.49-6-xen.gz: original filename unknown >> Use "-f /boot/symvers-3.12.49-6-xen.gz" on command line to prevent >> this message. >> >> 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 "x86_64-unknown-linux-gnu"... >> >> WARNING: could not find MAGIC_START! >> WARNING: cannot read linux_banner string >> crash: /var/tmp/vmlinux-3.12.49-6-xen.gz_FjRFMJ and /dev/mem do not match! >> >> Usage: >> >> crash [OPTION]... NAMELIST MEMORY-IMAGE[@ADDRESS] (dumpfile form) >> crash [OPTION]... [NAMELIST] (live system form) >> >> Enter "crash -h" for details. >> >> My question are as follows: >> >> (1) There are so may warnings like this: >> >> crash: xxxxxx: original filename unknown >> Use "-f xxxxxx" on command line to prevent this message. >> >> Do I need to add somay "-f xxxxxx" options on command line? Is there >> any better method? > > The message above simply mean that the original filename of the compressed > file was not stored in the file's header. That means that whoever created > the compressed file used "gzip -n" or "--no-name": > > $ man gzip > ... [ cut ] ... > > -n --no-name > When compressing, do not save the original file name and time > stamp by default. (The original name is always saved if the name > had to be truncated.) When decompressing, do not restore the > original file name if present (remove only the gzip suffix from > the compressed file name) and do not restore the original time stamp > if present (copy it from the compressed file). This option is the > default when decompressing. > ... > >> (2) "machine type mismatch" >> WARNING: machine type mismatch: >> crash utility: X86_64 >> /var/tmp/xen-4.5.1_10-1.gz_E5lLat: X86 >> >> But according to "uname -a": >> >> # uname -a >> Linux linux-6ev3 3.12.49-6-xen #1 SMP Mon Oct 26 16:05:37 UTC 2015 >> (11560c3) x86_64 x86_64 x86_64 GNU/Linux >> >> The running SuSE is also a 64-bit OS, so whether can remove these warnings? > > The mismatch message says that "/var/tmp/xen-4.5.1_10-1.gz_E5lLat" is an X86 > 32-bit binary. You cannot use a 32-bit xen binary with a 64-bit crash utility > binary. > > Run "gunzip xen-4.5.1_10-1.gz", and then run "file" on the uncompressed file. > If it's a 32-bit binary, and the dumpfile came from that kernel, then you need > to use a 32-bit crash utility binary. If the dumpfile came from a 64-bit kernel, > then you're using the wrong xen binary. > >> (3) >> >> WARNING: could not find MAGIC_START! >> WARNING: cannot read linux_banner string >> crash: /var/tmp/vmlinux-3.12.49-6-xen.gz_FjRFMJ and /dev/mem do not match! >> >> How can I fix this issue and run crash on SuSE? > > For starters, make sure the kernel, the dumpfile, and the crash binary are all > 32-bit or all 64-bit, whichever is appropriate. > > Dave > >> >> Thanks very much in advance! >> Best Regards >> Nan Xiao >> >> -- >> Crash-utility mailing list >> Crash-utility(a)redhat.com >> https://www.redhat.com/mailman/listinfo/crash-utility >> > > -- > Crash-utility mailing list > Crash-utility(a)redhat.com > https://www.redhat.com/mailman/listinfo/crash-utility -- Crash-utility mailing list Crash-utility(a)redhat.com https://www.redhat.com/mailman/listinfo/crash-utility