vmx_init_signal_test in ubuntu_kvm_unit_tests failed (FAIL: INIT signal consumed on VMX_INIT exit)

[Po-Hsu Lin]

Issue found on node kili after VT enabled, 5.4.0-75.84 generic.
This is not a regression since the test was run with the latest hirsute-WIP branch, with upstream tip c986dbe867053 ("x86/vmx: skip error-code delivery tests for #CP"). Plus, VT support was not enabled before.

Test failed with:
  FAIL: INIT signal consumed on VMX_INIT exit

Log:
 timeout -k 1s --foreground 10 /usr/bin/qemu-system-x86_64 --no-reboot -nodefaults -device pc-testdev -device isa-debug-exit,iobase=0xf4,iosize=0x4 -vnc none -serial stdio -device pci-testdev -machine accel=kvm -kernel /tmp/tmp.sh9xzBJWVK -smp 2 -cpu max,+vmx -m 2048 -append vmx_init_signal_test # -initrd /tmp/tmp.ulTqzg6RJr
 enabling apic
 enabling apic
 paging enabled
 cr0 = 80010011
 cr3 = 107f000
 cr4 = 20
 filter = vmx_init_signal_test, test = test_vmx_feature_control
 filter = vmx_init_signal_test, test = test_vmxon
 filter = vmx_init_signal_test, test = test_vmptrld
 filter = vmx_init_signal_test, test = test_vmclear
 filter = vmx_init_signal_test, test = test_vmptrst
 filter = vmx_init_signal_test, test = test_vmwrite_vmread
 filter = vmx_init_signal_test, test = test_vmcs_high
 filter = vmx_init_signal_test, test = test_vmcs_lifecycle
 filter = vmx_init_signal_test, test = test_vmx_caps
 filter = vmx_init_signal_test, test = test_vmread_flags_touch
 filter = vmx_init_signal_test, test = test_vmwrite_flags_touch
 filter = vmx_init_signal_test, test = null
 filter = vmx_init_signal_test, test = vmenter
 filter = vmx_init_signal_test, test = preemption timer
 filter = vmx_init_signal_test, test = control field PAT
 filter = vmx_init_signal_test, test = control field EFER
 filter = vmx_init_signal_test, test = CR shadowing
 filter = vmx_init_signal_test, test = I/O bitmap
 filter = vmx_init_signal_test, test = instruction intercept
 filter = vmx_init_signal_test, test = EPT A/D disabled
 filter = vmx_init_signal_test, test = EPT A/D enabled
 filter = vmx_init_signal_test, test = PML
 filter = vmx_init_signal_test, test = VPID
 filter = vmx_init_signal_test, test = interrupt
 filter = vmx_init_signal_test, test = nmi_hlt
 filter = vmx_init_signal_test, test = debug controls
 filter = vmx_init_signal_test, test = MSR switch
 filter = vmx_init_signal_test, test = vmmcall
 filter = vmx_init_signal_test, test = disable RDTSCP
 filter = vmx_init_signal_test, test = int3
 filter = vmx_init_signal_test, test = into
 filter = vmx_init_signal_test, test = exit_monitor_from_l2_test
 filter = vmx_init_signal_test, test = invalid_msr
 filter = vmx_init_signal_test, test = v2_null_test
 filter = vmx_init_signal_test, test = v2_multiple_entries_test
 filter = vmx_init_signal_test, test = fixture_test_case1
 filter = vmx_init_signal_test, test = fixture_test_case2
 filter = vmx_init_signal_test, test = invvpid_test_v2
 filter = vmx_init_signal_test, test = vmx_controls_test
 filter = vmx_init_signal_test, test = vmx_host_state_area_test
 filter = vmx_init_signal_test, test = vmx_guest_state_area_test
 filter = vmx_init_signal_test, test = vmentry_movss_shadow_test
 filter = vmx_init_signal_test, test = vmentry_unrestricted_guest_test
 filter = vmx_init_signal_test, test = vmx_eoi_bitmap_ioapic_scan_test
 filter = vmx_init_signal_test, test = vmx_hlt_with_rvi_test
 filter = vmx_init_signal_test, test = apic_reg_virt_test
 filter = vmx_init_signal_test, test = virt_x2apic_mode_test
 filter = vmx_init_signal_test, test = vmx_apic_passthrough_test
 filter = vmx_init_signal_test, test = vmx_apic_passthrough_thread_test
 filter = vmx_init_signal_test, test = vmx_apic_passthrough_tpr_threshold_test
 filter = vmx_init_signal_test, test = vmx_init_signal_test

 Test suite: vmx_init_signal_test
 PASS: INIT signal blocked when CPU in VMX operation
 PASS: INIT signal during VMX non-root mode result in exit-reason VMX_INIT (3)
 FAIL: INIT signal consumed on VMX_INIT exit
 filter = vmx_init_signal_test, test = vmx_sipi_signal_test
 filter = vmx_init_signal_test, test = vmx_vmcs_shadow_test
 filter = vmx_init_signal_test, test = vmx_cr_load_test
 filter = vmx_init_signal_test, test = vmx_cr4_osxsave_test
 filter = vmx_init_signal_test, test = vmx_nm_test
 filter = vmx_init_signal_test, test = vmx_db_test
 filter = vmx_init_signal_test, test = vmx_nmi_window_test
 filter = vmx_init_signal_test, test = vmx_intr_window_test
 filter = vmx_init_signal_test, test = vmx_pending_event_test
 filter = vmx_init_signal_test, test = vmx_pending_event_hlt_test
 filter = vmx_init_signal_test, test = vmx_store_tsc_test
 filter = vmx_init_signal_test, test = vmx_preemption_timer_zero_test
 filter = vmx_init_signal_test, test = vmx_preemption_timer_tf_test
 filter = vmx_init_signal_test, test = vmx_preemption_timer_expiry_test
 filter = vmx_init_signal_test, test = ept_access_test_not_present
 filter = vmx_init_signal_test, test = ept_access_test_read_only
 filter = vmx_init_signal_test, test = ept_access_test_write_only
 filter = vmx_init_signal_test, test = ept_access_test_read_write
 filter = vmx_init_signal_test, test = ept_access_test_execute_only
 filter = vmx_init_signal_test, test = ept_access_test_read_execute
 filter = vmx_init_signal_test, test = ept_access_test_write_execute
 filter = vmx_init_signal_test, test = ept_access_test_read_write_execute
 filter = vmx_init_signal_test, test = ept_access_test_reserved_bits
 filter = vmx_init_signal_test, test = ept_access_test_ignored_bits
 filter = vmx_init_signal_test, test = ept_access_test_paddr_not_present_ad_disabled
 filter = vmx_init_signal_test, test = ept_access_test_paddr_not_present_ad_enabled
 filter = vmx_init_signal_test, test = ept_access_test_paddr_read_only_ad_disabled
 filter = vmx_init_signal_test, test = ept_access_test_paddr_read_only_ad_enabled
 filter = vmx_init_signal_test, test = ept_access_test_paddr_read_write
 filter = vmx_init_signal_test, test = ept_access_test_paddr_read_write_execute
 filter = vmx_init_signal_test, test = ept_access_test_paddr_read_execute_ad_disabled
 filter = vmx_init_signal_test, test = ept_access_test_paddr_read_execute_ad_enabled
 filter = vmx_init_signal_test, test = ept_access_test_paddr_not_present_page_fault
 filter = vmx_init_signal_test, test = ept_access_test_force_2m_page
 filter = vmx_init_signal_test, test = atomic_switch_max_msrs_test
 filter = vmx_init_signal_test, test = atomic_switch_overflow_msrs_test
 filter = vmx_init_signal_test, test = rdtsc_vmexit_diff_test
 filter = vmx_init_signal_test, test = vmx_mtf_test
 filter = vmx_init_signal_test, test = vmx_mtf_pdpte_test
 SUMMARY: 8 tests, 1 unexpected failures
 FAIL vmx_init_signal_test (8 tests, 1 unexpected failures)

[Kleber Sacilotto de Souza (kleber-souza)]

Observed with focal/linux: 5.4.0-76.85

[Guilherme G. Piccoli (gpiccoli)]

Observed on F/KVM, cycle sru-20210531.

[Guilherme G. Piccoli (gpiccoli)]

Observed on B/KVM, cycle sru-20210531.

[Po-Hsu Lin (cypressyew)]

Found on F-fips 5.4.0-1032.37

[Po-Hsu Lin (cypressyew)]

Found on B-kvm 4.15.0-1099.101

[Zachary Tahenakos (ztahenakos)]

Observed with focal/linux-fips 5.4.0-1041-47 on lagalla.

[Cory Todd (corytodd)]

Observed with focal/linux-fips 5.4.0-1058.66 on amaura.

[Cory Todd (corytodd)]

Observed on focal/linux-fips 5.4.0-1061.69 on rumford.

[Po-Hsu Lin (cypressyew)]

With kvm-unit-test repo updated to d8a4f9e5 (ci: Update the list of tests that we run in the Fedora Cirrus-CI), this test is still failing with the same error message.