[Xen-devel] Re: crash with Xen dom0 image from kdump

[Dave Anderson <anderson@xxxxxxxxxx>]

Kazuo Moriwaka wrote:

> Hi,
>
> I tried to use crash (http://people.redhat.com/~anderson/) with
> x86_32 xen domain0 image, which is extracted from whole-machine dump
> image made by kexec/kdump.
>
> 'kmem -i' cause some error, but other almost all commands I tried seem
> to work well.
> This may be some helps for xen development and troubleshooting.
>
> regards,
>

Hello Kazuo,

Would it be possible for you to make your vmlinux and dom0core files
available for me to work with?  Can you put them someplace where
I can download them?  (Contact me off-list with the particulars...)

Thanks,
  Dave Anderson


>
> ---------------------------------------------------------------------------
> (... get vmcore with kexec/kdump ...)
> $ ./dom0cut_x86_32.py -txen -f -dvmcore -odom0core -xxen-syms -vvmlinux-2.6.16
> $ crash vmlinux dom0core
>
> crash 4.0-2.24
> Copyright (C) 2002, 2003, 2004, 2005, 2006  Red Hat, Inc.
> Copyright (C) 2004, 2005, 2006  IBM Corporation
> Copyright (C) 1999-2006  Hewlett-Packard Co
> Copyright (C) 2005  Fujitsu Limited
> Copyright (C) 2005  NEC Corporation
> Copyright (C) 1999, 2002  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 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"...
>
>       KERNEL: vmlinux
>     DUMPFILE: dom0core
>         CPUS: 2
>         DATE: Wed May 24 18:52:04 2006
>       UPTIME: 00:04:32
> LOAD AVERAGE: 0.46, 0.10, 0.03
>        TASKS: 26
>     NODENAME: (none)
>      RELEASE: 2.6.16.13-xen
>      VERSION: #3 SMP Wed May 24 10:08:29 JST 2006
>      MACHINE: i686  (866 Mhz)
>       MEMORY: 887.4 MB
>        PANIC: "SysRq : Trigger a crashdump"
>          PID: 163
>      COMMAND: "echo"
>         TASK: c024e050  [THREAD_INFO: f3f0e000]
>          CPU: 0
>        STATE: TASK_RUNNING (SYSRQ)
>
> crash> bt
> PID: 163    TASK: c024e050  CPU: 0   COMMAND: "echo"
>  #0 [f3f0ffbc] ret_from_fork at c01050a8
>  #1 [f3f0ffb8] system_call at c01051d2
>     EAX: 00000004  EBX: 00000001  ECX: b7e8c000  EDX: 00000002
>     DS:  007b      ESI: 00000002  ES:  007b      EDI: 00000000
>     SS:  007b      ESP: bf8ad750  EBP: bf8ad774
>     CS:  0073      EIP: b7f35a88  ERR: 00000004  EFLAGS: 00000246
> crash> kmem -i
>               PAGES        TOTAL      PERCENTAGE
>  TOTAL MEM   225145     879.5 MB         ----
>       FREE   216192     844.5 MB   96% of TOTAL MEM
>       USED     8953        35 MB    3% of TOTAL MEM
>     SHARED   216640     846.2 MB   96% of TOTAL MEM
> kmem: invalid kernel virtual address: 0  type: "inode buffer"
> ---------------------------------------------------------------------------
> --
> Kazuo Moriwaka <moriwaka@xxxxxxxxxxxxx>


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