Re: kvm: repeatable kernel crash with Athlon II cpu

From: Stas Sergeev
Date: Tue Mar 29 2016 - 13:10:37 EST

29.03.2016 19:27, Paolo Bonzini ÐÐÑÐÑ:
> On 29/03/2016 18:08, Stas Sergeev wrote:
>>>> I've been running dosemu and found out that it hangs
>>>> or reboots one of my PCs. This happens with any fedora-23
>>>> kernels and hand-compiled kernels. The latest I tried, were:
>>>> 4.4.6-300.fc23.x86_64
>>>> 4.5.0-rc6
>>> Can you check if 4.3 works?
>> Same crash on kernel-4.2.3-300.fc23.x86_64 - the oldest
>> available for f23.
>>>>>> Hope someone can find such an old CPU an reproduce the problem.
>>>>>> Please let me know what info should I provide or what debugging
>>>>>> to do to help getting that fixed.
>>>> Do you have experience bisecting the kernel? If so perhaps you can try
>>>> doing that.
>> But it looks like a genuine bug, not a regression.
> Yeah, I was hoping it was introduced recently.
>> Of course I can check some 3.x versions...
> That would help a lot, thanks.
Same on 3.18, and that's the oldest kernel that can be built
on f23 (gcc5).
So that's a genuine bug after all, not a regression.
So does anyone have the AMD AthlonII X2 245 to try reproducing this?