1 files changed, 3 insertions, 0 deletions

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 013a5b3e9f75..2884baf1d5f9 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -746,6 +746,7 @@ static bool make_all_cpus_request(struct kvm *kvm, unsigned int req)
                 cpumask_clear(cpus);
 
         me = get_cpu();
+        spin_lock(&kvm->requests_lock);
         for (i = 0; i < KVM_MAX_VCPUS; ++i) {
                 vcpu = kvm->vcpus[i];
                 if (!vcpu)
@@ -762,6 +763,7 @@ static bool make_all_cpus_request(struct kvm *kvm, unsigned int req)
                 smp_call_function_many(cpus, ack_flush, NULL, 1);
         else
                 called = false;
+        spin_unlock(&kvm->requests_lock);
         put_cpu();
         free_cpumask_var(cpus);
         return called;
@@ -982,6 +984,7 @@ static struct kvm *kvm_create_vm(void)
         kvm->mm = current->mm;
         atomic_inc(&kvm->mm->mm_count);
         spin_lock_init(&kvm->mmu_lock);
+        spin_lock_init(&kvm->requests_lock);
         kvm_io_bus_init(&kvm->pio_bus);
         mutex_init(&kvm->lock);
         kvm_io_bus_init(&kvm->mmio_bus);