Re: drm-ci: vkms: kms_flip@modeset-vs-vblank-race flake

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Le 14/03/2025 à 13:11, Vignesh Raman a écrit :
Hi Louis,

On 13/03/25 19:30, Louis Chauvet wrote:


Le 13/03/2025 à 11:45, Vignesh Raman a écrit :
Hi Maintainers,


Hi Vignesh,

Thanks for the report.

On my setup, this test passed, and the others are skipped.

I think the issue on this specific test may be due to performance (seems
to be a timing issue, I will try to slow down my VM). The other tests
require suspend/resume, which I failed to setup on my VM.

To understand what is wrong, I would like to have an environment very
similar to the CI, how can I reproduce this on my machine? Is there a
setup script somewhere I can run to create a virtual machine?

You can follow the instructions below to use the same container that
drm-ci uses from mesa (From pipeline
https://gitlab.freedesktop.org/vigneshraman/linux/-/jobs/72473690).
drm-ci uses the crosvm-runner.sh script. You can also build specific IGT
version and run the tests from the container. Thanks Corentin for the
documentation.

https://gitlab.collabora.com/virgl-es/documentation/-/blob/master/dev-ci-container.md

Thank you so much for those information, but I think this gitlab instance is private, is there a public repository somewhere?

Have a nice day,
Louis Chauvet

If you want to run only specific tests for vkms in drm-ci, you can use
this commit,
https://gitlab.freedesktop.org/vigneshraman/linux/-/commit/0773affa01a4347056c891bc58887ae1daa0161c

Once the pipeline is created you can use the ci_run_n_monitor.py [1]
from mesa project to run only vkms and its dependent jobs.

../mesa/bin/ci/ci_run_n_monitor.py --pipeline-url
https://gitlab.freedesktop.org/vigneshraman/linux/-/pipelines/1384344
--target vkms:none

[1]
https://gitlab.freedesktop.org/mesa/mesa/-/blob/main/bin/ci/ci_run_n_monitor.py

Please let us know if you need more information. Thanks.

Regards,
Vignesh


Thanks,
Louis Chauvet

There are some flake test reported for vkms driver testing in drm-ci.

# Board Name: vkms
# Failure Rate: 20
# IGT Version: 1.30-g04bedb923
# Linux Version: 6.14.0-rc4
kms_flip@modeset-vs-vblank-race

DEBUG - Begin test kms_flip@modeset-vs-vblank-race
ERROR - Igt error: (kms_flip:1250) CRITICAL: Test assertion failure
function run_test_step, file ../tests/kms_flip.c:979:
ERROR - Igt error: (kms_flip:1250) CRITICAL: Failed assertion: end -
start > 0.9 * actual_frame_time(o) && end - start < 2.6 *
actual_frame_time(o)
ERROR - Igt error: (kms_flip:1250) CRITICAL: wait for two vblanks took
47374 usec (frame time 16665.600000 usec)
ERROR - Igt error: Dynamic subtest A-Virtual17 failed.
ERROR - Igt error: **** DEBUG ****
ERROR - Igt error: (kms_flip:1250) igt_fb-DEBUG:
igt_create_fb_with_bo_size(width=1024, height=768,
format=XR24(0x34325258), modifier=0x0, size=0)
ERROR - Igt error: (kms_flip:1250) igt_fb-DEBUG:
igt_create_fb_with_bo_size(handle=1, pitch=4096)
ERROR - Igt error: (kms_flip:1250) ioctl_wrappers-DEBUG: Test
requirement passed: igt_has_fb_modifiers(fd)
ERROR - Igt error: (kms_flip:1250) igt_fb-DEBUG:
igt_create_fb_with_bo_size(width=1024, height=768,
format=XR24(0x34325258), modifier=0x0, size=0)
ERROR - Igt error: (kms_flip:1250) igt_fb-DEBUG:
igt_create_fb_with_bo_size(handle=2, pitch=4096)
ERROR - Igt error: (kms_flip:1250) ioctl_wrappers-DEBUG: Test
requirement passed: igt_has_fb_modifiers(fd)
ERROR - Igt error: (kms_flip:1250) igt_fb-DEBUG: Test requirement
passed: cairo_surface_status(fb->cairo_surface) == CAIRO_STATUS_SUCCESS
ERROR - Igt error: (kms_flip:1250) igt_fb-DEBUG: Test requirement
passed: cairo_surface_status(fb->cairo_surface) == CAIRO_STATUS_SUCCESS
ERROR - Igt error: (kms_flip:1250) igt_kms-INFO:   1024x768: 60 65000
1024 1048 1184 1344 768 771 777 806 0x48 0xa
ERROR - Igt error: (kms_flip:1250) DEBUG: No stale events found
ERROR - Igt error: (kms_flip:1250) INFO: Expected frametime: 16666us;
measured 16665.6us +- 0.500us accuracy 0.01%
ERROR - Igt error: (kms_flip:1250) CRITICAL: Test assertion failure
function run_test_step, file ../tests/kms_flip.c:979:
ERROR - Igt error: (kms_flip:1250) CRITICAL: Failed assertion: end -
start > 0.9 * actual_frame_time(o) && end - start < 2.6 *
actual_frame_time(o)
ERROR - Igt error: (kms_flip:1250) CRITICAL: wait for two vblanks took
47374 usec (frame time 16665.600000 usec)
ERROR - Igt error: (kms_flip:1250) igt_core-INFO: Stack trace:
ERROR - Igt error: (kms_flip:1250) igt_core-INFO:   #0
../lib/igt_core.c:2055 __igt_fail_assert()
ERROR - Igt error: (kms_flip:1250) igt_core-INFO:   #1
../tests/kms_flip.c:1023 run_test_on_crtc_set.constprop.0()
ERROR - Igt error: (kms_flip:1250) igt_core-INFO:   #2
../tests/kms_flip.c:1845 run_test()
ERROR - Igt error: (kms_flip:1250) igt_core-INFO:   #3
../tests/kms_flip.c:2078 __igt_unique____real_main2001()
ERROR - Igt error: (kms_flip:1250) igt_core-INFO:   #4
../tests/kms_flip.c:2001 main()
ERROR - Igt error: (kms_flip:1250) igt_core-INFO:   #5
[__libc_init_first+0x8a]
ERROR - Igt error: (kms_flip:1250) igt_core-INFO:   #6
[__libc_start_main+0x85]
ERROR - Igt error: (kms_flip:1250) igt_core-INFO:   #7 [_start+0x21]
ERROR - Igt error: ****  END  ****
ERROR - Igt error: (kms_flip:1250) igt_kms-CRITICAL: Test assertion
failure function kmstest_set_connector_dpms, file ../lib/igt_kms.c:2246:
ERROR - Igt error: (kms_flip:1250) igt_kms-CRITICAL: Failed assertion:
found_it
ERROR - Igt error: (kms_flip:1250) igt_kms-CRITICAL: Last errno: 9, Bad
file descriptor
ERROR - Igt error: (kms_flip:1250) igt_kms-CRITICAL: DPMS property not
found on 39
ERROR - Test kms_flip@modeset-vs-vblank-race: Fail: See
"/builds/vigneshraman/linux/results/igt.kms_flip@modeset-vs-vblank-
race.log"
DEBUG - End test kms_flip@modeset-vs-vblank-race

Pipeline: https://gitlab.freedesktop.org/vigneshraman/linux/-/
jobs/72473690

Please could you have a look at these test results and let us know if
you need more information. Thank you.

Regards,
Vignesh



--
Louis Chauvet, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com




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