mmio_index should be taken into account when copying data from
userspace.
Signed-off-by: Gleb Natapov <gleb@xxxxxxxxxx>
---
arch/x86/kvm/x86.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index b568779..609c7ab 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5518,7 +5518,8 @@ static int complete_mmio(struct kvm_vcpu *vcpu)
if (vcpu->mmio_needed) {
vcpu->mmio_needed = 0;
if (!vcpu->mmio_is_write)
- memcpy(vcpu->mmio_data, run->mmio.data, 8);
+ memcpy(vcpu->mmio_data + vcpu->mmio_index,
+ run->mmio.data, 8);
vcpu->mmio_index += 8;
if (vcpu->mmio_index < vcpu->mmio_size) {
run->exit_reason = KVM_EXIT_MMIO;
--
1.7.2.3
--
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