2017-08-02 17:55+0200, Paolo Bonzini: > During teardown, accesses to memslots and buses are using > rcu_dereference_protected with an always-true condition because > these accesses are done outside the usual mutexes. This > is because the last reference is gone and there cannot be any > concurrent modifications, but rcu_dereference_protected is > ugly and unobvious. > > Instead, check the refcount in kvm_get_bus and __kvm_memslots. > > Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx> > --- Probably looks nicer than temporarily taking the slots_lock. Queued for 4.13, thanks.
