vmx_nmi_window_test failed in ubuntu_kvm_unit_tests on T-aws / X-aws

[Po-Hsu Lin]

Issue found on bare-metal node r5.metal, i3.metal, c5.metal

BUILD_HEAD=4671e4ba
 timeout -k 1s --foreground 30 /usr/bin/qemu-system-x86_64 -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.Lr4oBe84MU -smp 1 -cpu host,+vmx -append vmx_nmi_window_test # -initrd /tmp/tmp.nrGt7Xca5t
 enabling apic
 paging enabled
 cr0 = 80010011
 cr3 = 477000
 cr4 = 20

 Test suite: vmx_nmi_window_test
 FAIL: NMI-window: x86/vmx_tests.c:2184: Assertion failed: (expected) == (actual)
 LHS: 0x0000000000000012 - 0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0001'0010 - 18
 RHS: 000000000000000000 - 0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000'0000 - 0
 Expected VMX_VMCALL, got VMX_EXC_NMI.
 STACK: 405e1c 405e46 406511 401556 4039f1 400312
 SUMMARY: 4 tests, 1 unexpected failures
 FAIL vmx_nmi_window_test (4 tests, 1 unexpected failures)

[Po-Hsu Lin (cypressyew)]

Looks like this is a new test.

[Sean Feole (sfeole)]

these failures are to be expected on 4.15 and older kernels. they were split from the large vmx test, this is not a blocker, removing the tag.

We will continue to run these tests on the 4.15 and older kernels, to ensure that the kernel does not crash or panic, etc. There is no plan to stop running them. We just know they will fail

[Po-Hsu Lin (cypressyew)]

Time out on T-4.4
 BUILD_HEAD=4671e4ba
 timeout -k 1s --foreground 30 /usr/bin/qemu-system-x86_64 -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.mwHi9CF3cb -smp 1 -cpu host,+vmx -append vmx_nmi_window_test # -initrd /tmp/tmp.pfPf1qQ1mK
 enabling apic
 paging enabled
 cr0 = 80010011
 cr3 = 477000
 cr4 = 20

 Test suite: vmx_nmi_window_test
 PASS: NMI-window: active, no blocking: Exit reason (8) is 'NMI window'
 PASS: NMI-window: active, no blocking: RIP (0x406f4d) is 0x406f4d
 PASS: NMI-window: active, no blocking: Activity state (0) is 'ACTIVE'
 PASS: NMI-window: active, blocking by MOV-SS: Exit reason (8) is 'NMI window'
 PASS: NMI-window: active, blocking by MOV-SS: RIP (0x406f4e) is 0x406f4e
 PASS: NMI-window: active, blocking by MOV-SS: Activity state (0) is 'ACTIVE'
 PASS: NMI-window: active, no blocking, injecting #UD: Exit reason (8) is 'NMI window'
 PASS: NMI-window: active, no blocking, injecting #UD: RIP (0x413d21) is 0x413d21
 PASS: NMI-window: active, no blocking, injecting #UD: Activity state (0) is 'ACTIVE'
 PASS: NMI-window: active, blocking by NMI: Exit reason (8) is 'NMI window'
 PASS: NMI-window: active, blocking by NMI: RIP (0x406f4e) is 0x406f4e
 PASS: NMI-window: active, blocking by NMI: Activity state (0) is 'ACTIVE'
 PASS: NMI-window: active, blocking by NMI: #UD handler executed once (actual 1 times)
 qemu-system-x86_64: terminating on signal 15 from pid 6355
 FAIL vmx_nmi_window_test (timeout; duration=30)

[Kelsey Steele (kelsey-steele)]

failed on Bionic/azure-4.15 : 4.15.0-1097.107 : amd64

FAIL vmx_nmi_window_test (timeout; duration=30)

[Po-Hsu Lin (cypressyew)]

Still visible in Xenial 4.4.0-1118.132 AWS c5.metal

[Francis Ginther (fginther)]

Seen with linux-oracle 4.15.0-1065.73.

[Kleber Sacilotto de Souza (kleber-souza)]

Failed on xenial/linux-oracle: 4.15.0-1069.77~16.04.1 for sru-20210315

[Kleber Sacilotto de Souza (kleber-souza)]

Found with trusty/linux-azure 4.15.0-1114.127~14.04.1.

[Ian May (ian-may)]

bionic/linux-aws: 4.15.0-1103.110

[Ian May (ian-may)]

Found on bionic/linux-aws-fips: 4.15.0-2045.47

[Ian May (ian-may)]

Found on bionic/linux-azure-4.15: 4.15.0-1115.128