[Bug 213983] WARNING: CPU: 3 PID: 520 at drivers/gpu/drm/ttm/ttm_bo.c:409 ttm_bo_release+0x7a/0x803 [ttm]

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=213983

Christian König (christian.koenig at amd.com) changed:

           What    |Removed                     |Added
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                 CC|                            |christian.koenig at amd.com

--- Comment #3 from Christian König (christian.koenig at amd.com) ---
Well what happens here is that a buffer object is released while it is pinned
and TTM now warns about doing stuff like that.

The key point is we need to figure out why the buffer is pinned in the first
place.

One possibility is that it is used for scanout and containing the displayed
picture, but from the backtrace my guess is that the buffer is shared with a
different device and pinned because of that.

Can we get an lspci output for the system?

Thanks in advance,
Christian.

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