Dave Anderson wrote:
> ----- "Gui Jianfeng" <guijianfeng@xxxxxxxxxxxxxx> wrote:
>
>> Dave Anderson wrote:
>>> ----- "Dave Anderson" <anderson@xxxxxxxxxx> wrote:
>>>
>>>> ----- "Paolo Bonzini" <pbonzini@xxxxxxxxxx> 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?
That's true.
>
> 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?
Yes.
>
> Can you make a vmlinux/vmcore pair available for me to download?
Ok, will do later.
Thanks,
Gui
>
> Thanks,
> Dave
>
>
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