I've fixed this one, and queued it for the next release.

The warning messages themselves were bogus because they were
referring to non-existent user-mode-to-kernel-mode exception
frames for each of the kernel threads.

Thanks for the bug report,
  Dave
 
 

Joshua Giles wrote:

Not quite sure if this or the kdump list is appropriate for this
discussion, but I will start here...

I've been playing with xen dumping on x86_64 and x86 (RHEL5 20061006.2);
The following is a simple crash session on x86_64 (using "xm dump-core
-L"):

`crash /usr/lib/debug/lib/modules/2.6.18-1.2714.el5xen/vmlinux /xen/dump/Live_Dump`

"WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame
WARNING: possibly bogus exception frame