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KVM: VMX: avoid guest hang on invalid invept instruction
author
Paolo Bonzini
<pbonzini@redhat.com>
Fri, 18 Mar 2016 15:53:29 +0000
(16:53 +0100)
committer
Sasha Levin
<sasha.levin@oracle.com>
Mon, 18 Apr 2016 12:51:06 +0000
(08:51 -0400)
[ Upstream commit
2849eb4f99d54925c543db12917127f88b3c38ff
]
A guest executing an invalid invept instruction would hang
because the instruction pointer was not updated.
Cc: stable@vger.kernel.org
Fixes:
bfd0a56b90005f8c8a004baf407ad90045c2b11e
Reviewed-by: David Matlack <dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
arch/x86/kvm/vmx.c
patch
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diff --git
a/arch/x86/kvm/vmx.c
b/arch/x86/kvm/vmx.c
index
9171486
..
1274fac
100644
(file)
--- a/
arch/x86/kvm/vmx.c
+++ b/
arch/x86/kvm/vmx.c
@@
-7210,6
+7210,7
@@
static int handle_invept(struct kvm_vcpu *vcpu)
if (!(types & (1UL << type))) {
nested_vmx_failValid(vcpu,
VMXERR_INVALID_OPERAND_TO_INVEPT_INVVPID);
+ skip_emulated_instruction(vcpu);
return 1;
}