Re: [Qemu-devel] [BUG] QEMU crashes when 64bit BAR is present

[Alexey Korolev]

On 06/12/12 09:23, Alexey Korolev wrote:
> Hi Gerd,
>>   Hi,
>>
>>> And qemu error output is:
>>> qemu: /home/akorolev/qemu-kvm/exec.c:2255: register_subpage: Assertion 
>>> `existing->mr->subpage || existing->mr == &io_mem_unassigned' failed.
>>>
>>> Guest OS is Centos 5.5 and log is pretty boring, as qemu crashes before 
>>> Linux can report an issue.
>> Where does it crash? seabios? linux kernel?
>> Still reproducable with 1.3.0?
> It is a qemu core assertion.
It's a qemu assertion which occurs on early stage of linux bootup process. I 
guess it fails when linux calls HPET init functions. See this
post for details: 
http://lists.gnu.org/archive/html/qemu-devel/2012-01/msg03189.html

> Haven't tried 1.3.0 yet, can try it today.
> The bug is quite easy to reproduce, if use ivshmem with 64bit tweaks and 
> specify size 128M.
>
>