From 0004c7c25757f103ddb3a9e4bcfd533aad41f9a0 Mon Sep 17 00:00:00 2001 From: Gleb Natapov Date: Tue, 12 Apr 2011 12:36:24 +0300 Subject: [PATCH] KVM: Fix compound mmio mmio_index should be taken into account when copying data from userspace. Signed-off-by: Gleb Natapov Signed-off-by: Avi Kivity --- arch/x86/kvm/x86.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index e3ac212f7c87..a9a307a75465 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5576,7 +5576,8 @@ 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; -- 2.20.1