Re: general protection fault in finish_task_switch (2)

[Paolo Bonzini]

On 22/08/2018 11:08, Peter Zijlstra wrote:
>> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10023961400000
> 
>> RIP: 0010:__fire_sched_in_preempt_notifiers kernel/sched/core.c:2481
> That repro thing does something dodgy with KVM, which then corrupts the
> premption notifier thing. I'm sufficiently KVM clueless to not really
> know where to start looking though..

It seems to be a reference counting issue, or something like that.  I'm
looking at it...

Paolo