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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

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Pull KVM fixes from Paolo Bonzini:
 "Bugfixes and strengthening the validity checks on inputs from new
  userspace APIs.

  Now I know why I shouldn't prepare pull requests on the weekend, it's
  hard to concentrate if your son is shouting about his latest Minecraft
  builds in your ear. Fortunately all the patches were ready and I just
  had to check the test results..."

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: SVM: Fix disable pause loop exit/pause filtering capability on SVM
  KVM: LAPIC: Prevent setting the tscdeadline timer if the lapic is hw disabled
  KVM: arm64: Don't inherit exec permission across page-table levels
  KVM: arm64: Prevent vcpu_has_ptrauth from generating OOL functions
  KVM: nVMX: check for invalid hdr.vmx.flags
  KVM: nVMX: check for required but missing VMCS12 in KVM_SET_NESTED_STATE
  selftests: kvm: do not set guest mode flag
This commit is contained in:
Linus Torvalds
2020-08-02 10:41:00 -07:00
parent ac3a0c8472 830f01b089
commit 628e04dfeb
7 changed files with 72 additions and 24 deletions
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42
tools/testing/selftests/kvm/x86_64/vmx_set_nested_state_test.c
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@@ -76,10 +76,8 @@ void set_default_state(struct kvm_nested_state *state)
void set_default_vmx_state(struct kvm_nested_state *state, int size)
{
memset(state, 0, size);
state->flags = KVM_STATE_NESTED_GUEST_MODE |
KVM_STATE_NESTED_RUN_PENDING;
if (have_evmcs)
state->flags |= KVM_STATE_NESTED_EVMCS;
state->flags = KVM_STATE_NESTED_EVMCS;
state->format = 0;
state->size = size;
state->hdr.vmx.vmxon_pa = 0x1000;
@@ -148,6 +146,11 @@ void test_vmx_nested_state(struct kvm_vm *vm)
state->hdr.vmx.smm.flags = 1;
test_nested_state_expect_einval(vm, state);
/* Invalid flags are rejected. */
set_default_vmx_state(state, state_sz);
state->hdr.vmx.flags = ~0;
test_nested_state_expect_einval(vm, state);
/* It is invalid to have vmxon_pa == -1ull and vmcs_pa != -1ull. */
set_default_vmx_state(state, state_sz);
state->hdr.vmx.vmxon_pa = -1ull;
@@ -185,22 +188,43 @@ void test_vmx_nested_state(struct kvm_vm *vm)
state->hdr.vmx.smm.flags = KVM_STATE_NESTED_SMM_GUEST_MODE;
test_nested_state_expect_einval(vm, state);
/* Size must be large enough to fit kvm_nested_state and vmcs12. */
/*
* Size must be large enough to fit kvm_nested_state and vmcs12
* if VMCS12 physical address is set
*/
set_default_vmx_state(state, state_sz);
state->size = sizeof(*state);
state->flags = 0;
test_nested_state_expect_einval(vm, state);
set_default_vmx_state(state, state_sz);
state->size = sizeof(*state);
state->flags = 0;
state->hdr.vmx.vmcs12_pa = -1;
test_nested_state(vm, state);
/*
* KVM_SET_NESTED_STATE succeeds with invalid VMCS
* contents but L2 not running.
*/
set_default_vmx_state(state, state_sz);
state->flags = 0;
test_nested_state(vm, state);
/* Invalid flags are rejected, even if no VMCS loaded. */
set_default_vmx_state(state, state_sz);
state->size = sizeof(*state);
state->flags = 0;
state->hdr.vmx.vmcs12_pa = -1;
state->hdr.vmx.flags = ~0;
test_nested_state_expect_einval(vm, state);
/* vmxon_pa cannot be the same address as vmcs_pa. */
set_default_vmx_state(state, state_sz);
state->hdr.vmx.vmxon_pa = 0;
state->hdr.vmx.vmcs12_pa = 0;
test_nested_state_expect_einval(vm, state);
/* The revision id for vmcs12 must be VMCS12_REVISION. */
set_default_vmx_state(state, state_sz);
set_revision_id_for_vmcs12(state, 0);
test_nested_state_expect_einval(vm, state);
/*
* Test that if we leave nesting the state reflects that when we get
* it again.