diff options
| -rw-r--r-- | arch/arm/kvm/arm.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index 37d216d..ef1703b 100644 --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -492,6 +492,11 @@ static void vcpu_pause(struct kvm_vcpu *vcpu) wait_event_interruptible(*wq, !vcpu->arch.pause); } +static int kvm_vcpu_initialized(struct kvm_vcpu *vcpu) +{ + return vcpu->arch.target >= 0; +} + /** * kvm_arch_vcpu_ioctl_run - the main VCPU run function to execute guest code * @vcpu: The VCPU pointer @@ -508,8 +513,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) int ret; sigset_t sigsaved; - /* Make sure they initialize the vcpu with KVM_ARM_VCPU_INIT */ - if (unlikely(vcpu->arch.target < 0)) + if (unlikely(!kvm_vcpu_initialized(vcpu))) return -ENOEXEC; ret = kvm_vcpu_first_run_init(vcpu); @@ -710,6 +714,10 @@ long kvm_arch_vcpu_ioctl(struct file *filp, case KVM_SET_ONE_REG: case KVM_GET_ONE_REG: { struct kvm_one_reg reg; + + if (unlikely(!kvm_vcpu_initialized(vcpu))) + return -ENOEXEC; + if (copy_from_user(®, argp, sizeof(reg))) return -EFAULT; if (ioctl == KVM_SET_ONE_REG) @@ -722,6 +730,9 @@ long kvm_arch_vcpu_ioctl(struct file *filp, struct kvm_reg_list reg_list; unsigned n; + if (unlikely(!kvm_vcpu_initialized(vcpu))) + return -ENOEXEC; + if (copy_from_user(®_list, user_list, sizeof(reg_list))) return -EFAULT; n = reg_list.n; |