On 2017-07-18 09:03:47 [-0300], Marcelo Tosatti wrote:

wait_lock for mmu_lock, being allocated in kmalloc memory,
can't be tracked by LOCKDEP. 

there is:
	struct kvm *kvm = kvm_arch_alloc_vm(); 

	spin_lock_init(&kvm->mmu_lock);

and kvm_arch_alloc_vm() itself is "kzalloc(sizeof(struct kvm),
GFP_KERNEL);". I don't see anything wrong with it. This does not explain
why this lockdep warning.

Disable LOCKDEP verification for it.

Fixes

 INFO: trying to register non-static key.
 the code is fine but needs lockdep annotation.
 turning off the locking correctness validator.

not convinced. 

 CPU: 0 PID: 12386 Comm: qemu-kvm Not tainted 3.10.0-631.rt56.546.el7.x86_64.debug #1

oh.

Sebastian