[Bug 214621] WARNING: CPU: 3 PID: 521 at drivers/gpu/drm/ttm/ttm_bo.c:409 ttm_bo_release+0xb64/0xe40 [ttm]

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=214621

--- Comment #15 from Lang Yu (Lang.Yu at amd.com) ---
(In reply to Erhard F. from comment #14)
> (In reply to Lang Yu from comment #12)
> > The warning was just merged into mainline 5.15.0 on Tue Nov 2 16:47:49
> > 2021(commit 56d33754481f). Not sure Erhard F.'s build contains this
> warning.
> I applied your patch on top of v5.15 after its' release which was 2021-10-31
> not on git master.

Many thanks for your help! I made a test patch to find who pinned amdgpu
dmabuf.
Could you please apply it on latest(commit
7ddb58cb0ecae8e8b6181d736a87667cc9ab8389) mainline 5.15.0, then reproduce the
warning and collect full dmesg? As I still didn't reproduce it on my machine...

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