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

--- Comment #13 from Christian König (christian.koe...@amd.com) ---
(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. 

Good point.

> And we can also add a debug WARN() into amdgpu_dma_buf_pin() to see who
> pinned dma_buf.

I thought about that as well, the problem is that we call this function very
often (e.g. 60 times a second if we play a 60fps video or similar).

Saying that I could as well be misguided by the dma_buf_release() function in
the call stack. This could potentially also be a bug in DAL/DC where we forget
to unpin a BO in some situation.

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