Bug 216120 - [BISECTED][REGRESSION] drm/amdgpu: add drm buddy support to amdgpu
Summary: [BISECTED][REGRESSION] drm/amdgpu: add drm buddy support to amdgpu
Status: RESOLVED WILL_NOT_FIX
Alias: None
Product: Drivers
Classification: Unclassified
Component: Video(DRI - non Intel) (show other bugs)
Hardware: Intel Linux
: P1 normal
Assignee: drivers_video-dri
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-06-13 16:27 UTC by mat200300h
Modified: 2022-07-15 22:01 UTC (History)
1 user (show)

See Also:
Kernel Version: 5.19-rc1
Subsystem:
Regression: Yes
Bisected commit-id:

Attachments
BISECT_LOG (2.54 KB, text/plain)
2022-06-13 16:31 UTC, mat200300h 		Details
BISECT_LOG (2.12 KB, text/plain)
2022-06-13 16:33 UTC, mat200300h 		Details
journal 2022-07-14 (20.03 KB, text/plain)
2022-07-14 17:38 UTC, mat200300h 		Details
Add an attachment (proposed patch, testcase, etc.)

Description mat200300h 2022-06-13 16:27:46 UTC 
KDE plasma panel at the bottom of the desktop is empty. If I revert the patch
drm/amdgpu: add drm buddy support to amdgpu 	c9cad937c0c58618fe5b0310fd539a854dc1ae95 the panel shows widgets and running programs again. Fortunately the patch seems to revert cleanly.

BISECT_LOG and lspci attached
Comment 1 mat200300h 2022-06-13 16:31:10 UTC 
Created attachment 301164 [details]
BISECT_LOG
Comment 2 mat200300h 2022-06-13 16:33:06 UTC 
Created attachment 301165 [details]
BISECT_LOG
Comment 3 mat200300h 2022-06-14 05:59:18 UTC 
same bad commit:
https://gitlab.freedesktop.org/drm/amd/-/issues/2050
Comment 4 mat200300h 2022-07-14 11:42:42 UTC 
this patch:

https://gitlab.freedesktop.org/drm/amd/uploads/564b2cc2b5ea87357f39e45c3a1a44e2/0001-drm-amdgpu-Fix-for-drm-buddy-memory-corruption.patch

on top of 5.19.0-rc6 seems to fix the problem

tested:

5.19.0-rc6: NOT OK

5.19.0-rc6+0001-drm-amdgpu-Fix-for-drm-buddy-memory-corruption.patch: OK
Comment 5 mat200300h 2022-07-14 17:38:32 UTC 
Created attachment 301427 [details]
journal 2022-07-14
Comment 6 mat200300h 2022-07-14 17:47:11 UTC 
not quite there yet, after some hours of working with latest linus+0001-drm-amdgpu-Fix-for-drm-buddy-memory-corruption.patch (latest commit "vf/remap: return the amount of bytes actually deduplicated") display stopped working, keyboard was working so I could reboot blindly. Part of journal attached in comment 5. Maybe different bug.

I could perhaps bisect adding the patch to relevant steps but now I have had too many gin&tonics and seem to be talking to myself anyway.
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