Sorry about the confusion, I don&#39;t have any domU guest running... <br><br>My grub menu.lst is,<br>        kernel /boot/xen.gz watchdog=0 dom0_mem=1024M lowmem_emergency_pool=16M crashkernel=128M@32M nmi=dom0<br>        module /boot/vmlinuz-2.6.27.42-0.1.1.xs5.6.0.44.111158xen ro ramdisk_size=250000 nmi_watchdog=0 xencons=off console=rcons0<br>
        module /boot/initrd-5.6.0-31188p.img<br><br>xen.gz is 64 bit one,  while dom0 kernel is 32bit... <br><br>I am using echo c &gt; /proc/sysrq-trigger to generate the kernel dump.  <br><br>When I tried to open the kernel dump, <br>
<br>

<p class="MsoNormal"><b><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);">[debugger@crash HV_crash]$ crash32 vmlinux-2.6.27
vmcore-2010-09-02-22-30-38</span></b></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);">crash32 5.0.3</span></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);">………………. </span></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);">This program has absolutely no warranty.  Enter &quot;help
warranty&quot; for details.</span></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);"> </span></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);">WARNING: machine type mismatch:</span></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);">         crash utility:
X86</span></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);">        
vmcore-2010-09-02-22-30-38: X86_64</span></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);"> </span></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);">crash32: vmcore-2010-09-02-22-30-38: not a supported file format</span></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);"> </span></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);"> </span></p>

<p class="MsoNormal"><b><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);">[debugger@crash HV_crash]$ crash64 vmlinux-2.6.27
vmcore-2010-09-02-22-30-38</span></b></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);">crash64 5.0.3</span></p>

<p class="MsoNormal" style="margin-bottom: 12pt;"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);">………………….</span></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);">WARNING: machine type mismatch:</span></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);">         crash utility:
X86_64</span></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);">         vmlinux-2.6.27:
X86</span></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);"> </span></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);">crash64: vmlinux-2.6.27: not a supported file format</span></p>

<p class="MsoNormal"><span style="font-size: 11pt; font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31, 73, 125);"> </span></p>

<br>Thanks Dave. <br><br><br><br><br><br><div class="gmail_quote">On Fri, Sep 10, 2010 at 3:17 PM, Dave Anderson <span dir="ltr">&lt;<a href="mailto:anderson@redhat.com">anderson@redhat.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div><div></div><div class="h5"><br>
----- &quot;Feng LI&quot; &lt;<a href="mailto:funglee@gmail.com">funglee@gmail.com</a>&gt; wrote:<br>
<br>
&gt; Hey you all,<br>
&gt;<br>
&gt; I am a kind of new to xen kernel dump analysis. Right now I have a<br>
&gt; fishy problem. I have generated vmcore dump from dom0 which is 32 bit<br>
&gt; PAE linux kernel running over 64 bit XEN kernel.<br>
&gt;<br>
&gt; BUT, I have diverticulitis to open the vmcore file. If I open it with<br>
&gt; crash32, crash32 would complain that vmcore is 64 bit image, while<br>
&gt; crash64 would complain dom0 kernel image is 32 bit.<br>
&gt;<br>
&gt; Could any body solve my problem ?<br>
&gt; Thanks in advance for any help and suggestions.<br>
<br>
</div></div>Can you explain again what your setup is?  I don&#39;t understand what<br>
you mean when you say that you &quot;have generated vmcore dump from dom0<br>
<div class="im">which is 32 bit PAE linux kernel running over 64 bit XEN kernel&quot;.<br>
<br>
</div>What crashed -- the 64-bit dom0 kernel or the 32-bit domU guest kernel?<br>
<br>
Dave<br>
<br>
&gt;<br>
&gt; Yours<br>
&gt; Kevin F LI<br>
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