If undefined ioctl number is passed to the kvm_vcpu_ioctl_device_attr
ioctl, we should trigger KVM_BUG_ON() and return with EIO to silent
coverity warning.
Addresses-Coverity: 1494124 ("Uninitialized scalar variable")
Signed-off-by: Ameer Hamza <amhamza.mgc@xxxxxxxxx>
---
Changes in v3:
Added KVM_BUG_ON() as default case and returned -EIO
---
arch/x86/kvm/x86.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index e0aa4dd53c7f..b37068f847ff 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5019,6 +5019,9 @@ static int kvm_vcpu_ioctl_device_attr(struct kvm_vcpu *vcpu,
case KVM_SET_DEVICE_ATTR:
r = kvm_arch_tsc_set_attr(vcpu, &attr);
break;
+ default:
+ KVM_BUG_ON(1, vcpu->kvm);
+ r = -EIO;
}
return r;
--
2.25.1
