[Crash-utility] crash can't handle virsh dump file

[Dave Anderson]

----- "Gui Jianfeng" <guijianfeng at cn.fujitsu.com> wrote:

> Dave Anderson wrote:
> > ----- "Dave Anderson" <anderson at redhat.com> wrote:
> > 
> >> ----- "Paolo Bonzini" <pbonzini at redhat.com> wrote:
> >>
> >>>> According to coredump, seems crash crashed at get_idt_base().
> >>>> device_find_instance() fails to find "cpu" instance.
> >>> I think Dave already has a patch for this.
> >>>
> >>> Paolo
> >> The patch for get_idt_base() was put in crash version 5.0.4.
> >> Looking back at the mail archives, though, I don't see what
> >> version Gui is/was using?
> >>
> >> Dave
> > 
> > Now I see with the crash debug output that Gui is using version
> > 5.0.3.  Can you please retry Paolo's patch on top of version
> > 5.0.4?
> > 
> 
> Hi Dave,
> 
> I did apply Paolo's patch on top of version 5.0.4, the bug is still there.
> I checked the 5.0.4 changelog and didn't see the fix for this.

Sorry, the 5.0.4 fix I was referring to was in get_kernel_base(), which is 
called with the result from get_idt_base().  So, just to be clear, when it
crashes in get_idt_base(), it's because device_find_instance() call returns
a NULL?

  static uint64_t
  get_idt_base(struct qemu_device_list *dl)
  {
          struct qemu_device_x86 *dx86 = (struct qemu_device_x86 *)
                  device_find_instance (dl, "cpu", 0);

          return dx86->idt.base;
  }

So, it seems that with Paolo's patch, it can find the "block" device, but
then can no longer find the "cpu" device?

Can you make a vmlinux/vmcore pair available for me to download?

Thanks,
  Dave