vmx_vmcs_shadow_test from ubuntu_kvm_unit_tests failed with timeout

[Po-Hsu Lin]

Issue found on E-KVM 5.3.0-1016.17-kvm and can be reproduced on 5.3.0-1015-kvm as well, thus this is not a regression.

PASS: invalid link pointer: field 6000: VMREAD and VMWRITE permission: shadowed for VMWRITE (in 21056 cycles)
PASS: invalid link pointer: field 6000: VMREAD and VMWRITE permission: ALU flags after VMWRITE (1) are as expected (1)
PASS: invalid link pointer: field 6000: VMREAD and VMWRITE permission: shadowed for VMREAD (in 20236 cycles)
PASS: invalid link pointer: field 6000: VMREAD and VMWRITE permission: ALU flags after VMREAD (1) are as expected (1)
qemu-system-x86_64: terminating on signal 15 from pid 2874 (timeout)
FAIL vmx_vmcs_shadow_test (timeout; duration=180)

Need to test it with a longer timeout setting.

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: linux-image-5.3.0-1015-kvm 5.3.0-1015.16
ProcVersionSignature: User Name 5.3.0-1015.16-kvm 5.3.18
Uname: Linux 5.3.0-1015-kvm x86_64
ApportVersion: 2.20.11-0ubuntu8.8
Architecture: amd64
Date: Wed Apr 22 04:37:11 2020
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=C.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-kvm
UpgradeStatus: No upgrade log present (probably fresh install)

[Po-Hsu Lin (cypressyew)]

It looks like this test will take about 8 minutes to run on a Eoan KVM instance:

SUMMARY: 142218 tests
PASS vmx_vmcs_shadow_test (142218 tests)

real 7m44.940s
user 5m20.729s
sys 2m21.447s

[Po-Hsu Lin (cypressyew)]

Second attempt:
SUMMARY: 142218 tests
PASS vmx_vmcs_shadow_test (142218 tests)

real 9m14.822s
user 5m29.348s
sys 3m42.759s

[Krzysztof Kozlowski (krzk)]

Found on impish/linux-oracle/5.13.0-1005.7 (instance: VM.Standard2.1)

[Po-Hsu Lin (cypressyew)]

On F-5.4 KVM it took about 3m40s to run through all 142218 tests

[Po-Hsu Lin (cypressyew)]

It took about 7 minutes to run on B-5.4 vm-denseio2-8 Oracle cloud.

[Po-Hsu Lin (cypressyew)]

This issue still exist on F-oracle-5.4.0-1087.96 VM.DenseIO2.8 even with kvm-unit-test updated.

[Po-Hsu Lin (cypressyew)]

This test took:
  * B-oracle: test skipped - 'VMCS shadowing' not supported.
  * F-oracle: 6m42s / 6m46s / 6m42s
  * J-oracle: 6m26s / 6m27s / 6m26s

CONFIG_DEBUG_VM was not enabled.

[Po-Hsu Lin (cypressyew)]

https://<email address hidden>/T/