Re: Shutting down a VM with Kernel 4.14 will sometime hang and a reboot is the only way to recover.

[David Hill <dhill@redhat.com>]

On 2017-12-03 11:08 PM, Jason Wang wrote:
>
>
> On 2017年12月02日 00:38, David Hill wrote:
>>>
>>> Finally, I reverted 581fe0ea61584d88072527ae9fb9dcb9d1f2783e too ... 
>>> compiling and I'll keep you posted.
>>
>> So I'm still able to reproduce this issue even with reverting these 3 
>> commits.  Would you have other suspect commits ? 
>
> Thanks for the testing. No, I don't have other suspect commits.
>
> Looks like somebody else it hitting your issue too (see 
> https://www.spinics.net/lists/netdev/msg468319.html)
>
> But he claims the issue were fixed by using qemu 2.10.1.
>
> So you may:
>
> -try to see if qemu 2.10.1 solves your issue
It didn't solve it for him... it's only harder to reproduce. [1]
> -if not, try to see if commit 2ddf71e23cc246e95af72a6deed67b4a50a7b81c 
> ("net: add notifier hooks for devmap bpf map") is the first bad commit
I'll try to see what I can do here
> -if not, maybe you can continue your bisection through git bisect skip
>
Some commits are so broken that the system won't boot ...  What I fear 
is that if I git bisect skip those commits, I'll also skip the commit 
culprit of my original problem

[1] https://www.spinics.net/lists/netdev/msg469887.html