55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
/*
|
|
* KVM_SET_SREGS tests
|
|
*
|
|
* Copyright (C) 2018, Google LLC.
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2.
|
|
*
|
|
* This is a regression test for the bug fixed by the following commit:
|
|
* d3802286fa0f ("kvm: x86: Disallow illegal IA32_APIC_BASE MSR values")
|
|
*
|
|
* That bug allowed a user-mode program that called the KVM_SET_SREGS
|
|
* ioctl to put a VCPU's local APIC into an invalid state.
|
|
*
|
|
*/
|
|
#define _GNU_SOURCE /* for program_invocation_short_name */
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/ioctl.h>
|
|
|
|
#include "test_util.h"
|
|
|
|
#include "kvm_util.h"
|
|
#include "x86.h"
|
|
|
|
#define VCPU_ID 5
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
struct kvm_sregs sregs;
|
|
struct kvm_vm *vm;
|
|
int rc;
|
|
|
|
/* Tell stdout not to buffer its content */
|
|
setbuf(stdout, NULL);
|
|
|
|
/* Create VM */
|
|
vm = vm_create_default(VCPU_ID, 0, NULL);
|
|
|
|
vcpu_sregs_get(vm, VCPU_ID, &sregs);
|
|
sregs.apic_base = 1 << 10;
|
|
rc = _vcpu_sregs_set(vm, VCPU_ID, &sregs);
|
|
TEST_ASSERT(rc, "Set IA32_APIC_BASE to %llx (invalid)",
|
|
sregs.apic_base);
|
|
sregs.apic_base = 1 << 11;
|
|
rc = _vcpu_sregs_set(vm, VCPU_ID, &sregs);
|
|
TEST_ASSERT(!rc, "Couldn't set IA32_APIC_BASE to %llx (valid)",
|
|
sregs.apic_base);
|
|
|
|
kvm_vm_free(vm);
|
|
|
|
return 0;
|
|
}
|