Re: Regression on linux-next (next-20240506)

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Hi

Am 15.05.24 um 10:16 schrieb Borah, Chaitanya Kumar:

-----Original Message-----
From: Borah, Chaitanya Kumar
Sent: Wednesday, May 8, 2024 3:05 PM
To: tzimmermann@xxxxxxx
Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; Kurmi, Suresh Kumar
<suresh.kumar.kurmi@xxxxxxxxx>; Saarinen, Jani <jani.saarinen@xxxxxxxxx>
Subject: Regression on linux-next (next-20240506)

Hello Thomas,

Hope you are doing well.

This mail is regarding a regression we are seeing in our CI runs[1] on linux-
next repository.

Since the version next-20240506 [2], we are seeing the following regression

`````````````````````````````````````````````````````````````````````````````````
Starting dynamic subtest: gt_contexts
(i915_selftest:1107) igt_kmod-WARNING: i915: Unknown symbol
acpi_video_unregister (err -2)
(i915_selftest:1107) igt_kmod-WARNING: i915: Unknown symbol
acpi_video_register_backlight (err -2)
(i915_selftest:1107) igt_kmod-WARNING: i915: Unknown symbol
__acpi_video_get_backlight_type (err -2)
(i915_selftest:1107) igt_kmod-WARNING: i915: Unknown symbol
acpi_video_register (err -2)
(i915_selftest:1107) igt_kmod-CRITICAL: Test assertion failure function
igt_kselftest_execute, file ../../../usr/src/igt-gpu-tools/lib/igt_kmod.c:1594:
(i915_selftest:1107) igt_kmod-CRITICAL: Failed assertion: err == 0
(i915_selftest:1107) igt_kmod-CRITICAL: kselftest "i915
igt__23__live_gt_contexts=1 live_selftests=-1 disable_display=1 st_filter="
failed: No such file or directory [2] Dynamic subtest gt_contexts failed.
`````````````````````````````````````````````````````````````````````````````````
Details log can be found in [3].

After bisecting the tree, the following patch [4] seems to be the first "bad"
commit

`````````````````````````````````````````````````````````````````````````````````````````````````````````
2fd001cd36005846caa6456fff1008c6f5bae9d4 is the first bad commit commit
2fd001cd36005846caa6456fff1008c6f5bae9d4
Author: Thomas Zimmermann tzimmermann@xxxxxxx
Date:   Fri Mar 29 21:32:12 2024 +0100

     arch: Rename fbdev header and source files
`````````````````````````````````````````````````````````````````````````````````````````````````````````

We also verified that if we revert the patch the issue is not seen.

Could you please check why the patch causes this regression and provide a fix
if necessary?

+Jani N

Gentle Reminder 😊

Sorry, I didn't notice the report before. The commit is not related to ACPI. There's now asm/video.h and acpi/video.h. Maybe there's a conflict among included files.

Do you have a kernel config to build with?

Best regards
Thomas


Thank you.

Regards

Chaitanya

[1] https://intel-gfx-ci.01.org/tree/linux-next/combined-alt.html?
[2] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-
next.git/commit/?h=next-20240506
[3] https://intel-gfx-ci.01.org/tree/linux-next/next-20240506/bat-mtlp-
9/igt@i915_selftest@live@gt_contexts.html
[4] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-
next.git/commit/?h=next-
20240506&id=2fd001cd36005846caa6456fff1008c6f5bae9d4

--
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)




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