Re: [Qemu-devel] qemu-2.8-rc4 is broken

[Stefan Hajnoczi]

On Wed, Dec 21, 2016 at 5:57 AM, Pavel Dovgalyuk <address@hidden> wrote:
>> -----Original Message-----
>> From: Stefan Hajnoczi [mailto:address@hidden
>> On Tue, Dec 20, 2016 at 11:10 AM, Pavel Dovgalyuk <address@hidden> wrote:
>> >> From: Stefan Hajnoczi [mailto:address@hidden
>> >> On Tue, Dec 20, 2016 at 10:45:44AM +0300, Pavel Dovgalyuk wrote:
>> >> > It also fails much earlier when I enable logs with "-d int -D log".
>> >> >
>> >> Looks like a heap corruption bug since free() is failing.
>> >
>> > Seems to be a race condition.
>> > When I add logs into invalidate_page_bitmap, the bug disappears.
>> > It seems that someone tries to free the same page bitmap twice and 
>> > simultaneously.
>>
>> Does the following workaround prevent the crashes?
>>
>> -global apic-common.vapic=off
>
> Yes, this option helps.
> Thank you.

Good news.  This can be fixed in 2.8.1 once someone finds a solution.

Stefan