From 32d1b3ab588c1231dbfa9eb08819c50529ce77d7 Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Wed, 5 May 2021 17:18:21 +0200 Subject: KVM: selftests: evmcs_test: Check that VMLAUNCH with bogus EVMPTR is causing #UD 'run->exit_reason == KVM_EXIT_SHUTDOWN' check is not ideal as we may be getting some unexpected exception. Directly check for #UD instead. Signed-off-by: Vitaly Kuznetsov Message-Id: <20210505151823.1341678-2-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini --- tools/testing/selftests/kvm/x86_64/evmcs_test.c | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) diff --git a/tools/testing/selftests/kvm/x86_64/evmcs_test.c b/tools/testing/selftests/kvm/x86_64/evmcs_test.c index ca22ee6d19cb..b01f64ac6ce3 100644 --- a/tools/testing/selftests/kvm/x86_64/evmcs_test.c +++ b/tools/testing/selftests/kvm/x86_64/evmcs_test.c @@ -19,6 +19,14 @@ #define VCPU_ID 5 +static int ud_count; + +static void guest_ud_handler(struct ex_regs *regs) +{ + ud_count++; + regs->rip += 3; /* VMLAUNCH */ +} + void l2_guest_code(void) { GUEST_SYNC(7); @@ -71,11 +79,11 @@ void guest_code(struct vmx_pages *vmx_pages) if (vmx_pages) l1_guest_code(vmx_pages); - GUEST_DONE(); - /* Try enlightened vmptrld with an incorrect GPA */ evmcs_vmptrld(0xdeadbeef, vmx_pages->enlightened_vmcs); GUEST_ASSERT(vmlaunch()); + GUEST_ASSERT(ud_count == 1); + GUEST_DONE(); } int main(int argc, char *argv[]) @@ -109,6 +117,10 @@ int main(int argc, char *argv[]) vcpu_alloc_vmx(vm, &vmx_pages_gva); vcpu_args_set(vm, VCPU_ID, 1, vmx_pages_gva); + vm_init_descriptor_tables(vm); + vcpu_init_descriptor_tables(vm, VCPU_ID); + vm_handle_exception(vm, UD_VECTOR, guest_ud_handler); + for (stage = 1;; stage++) { _vcpu_run(vm, VCPU_ID); TEST_ASSERT(run->exit_reason == KVM_EXIT_IO, @@ -124,7 +136,7 @@ int main(int argc, char *argv[]) case UCALL_SYNC: break; case UCALL_DONE: - goto part1_done; + goto done; default: TEST_FAIL("Unknown ucall %lu", uc.cmd); } @@ -156,10 +168,6 @@ int main(int argc, char *argv[]) (ulong) regs2.rdi, (ulong) regs2.rsi); } -part1_done: - _vcpu_run(vm, VCPU_ID); - TEST_ASSERT(run->exit_reason == KVM_EXIT_SHUTDOWN, - "Unexpected successful VMEnter with invalid eVMCS pointer!"); - +done: kvm_vm_free(vm); } -- cgit v1.2.3