diff options
Diffstat (limited to 'arch/arm64/kvm/guest.c')
| -rw-r--r-- | arch/arm64/kvm/guest.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index 07444fa22888..26a2ebc465ea 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -1019,8 +1019,8 @@ int kvm_arm_vcpu_arch_has_attr(struct kvm_vcpu *vcpu, return ret; } -long kvm_vm_ioctl_mte_copy_tags(struct kvm *kvm, - struct kvm_arm_copy_mte_tags *copy_tags) +int kvm_vm_ioctl_mte_copy_tags(struct kvm *kvm, + struct kvm_arm_copy_mte_tags *copy_tags) { gpa_t guest_ipa = copy_tags->guest_ipa; size_t length = copy_tags->length; @@ -1041,6 +1041,10 @@ long kvm_vm_ioctl_mte_copy_tags(struct kvm *kvm, if (length & ~PAGE_MASK || guest_ipa & ~PAGE_MASK) return -EINVAL; + /* Lengths above INT_MAX cannot be represented in the return value */ + if (length > INT_MAX) + return -EINVAL; + gfn = gpa_to_gfn(guest_ipa); mutex_lock(&kvm->slots_lock); |