Re: 5.13-rt1 + KVM = WARNING: at fs/eventfd.c:74 eventfd_signal()

[Paolo Bonzini]

On 16/07/21 04:06, Hillf Danton wrote:
> > With the patch:
> > 	- no warn
> > 	- continue using the VM normally...
> Well with the patch applied, the VM works fine without the stuff protected
> by the spin_lock_irqsave(), then without the patch why simply printing a
> warning makes the VM dumb, given the warning is there actually also preventing
> you from touching the lock.

If the warning is triggered, eventfd_signal will not do the wakeup.

Paolo