[Bug 212427] [AMDGPU] Multiple ttm_bo_release warnings

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=212427

Chris Rankin (rankincj at yahoo.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Regression|No                          |Yes

--- Comment #1 from Chris Rankin (rankincj at yahoo.com) ---
I am assuming that these warnings are all due to this one patch:

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index 22073e77fdf9a..a76eb2c14e8c5 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -514,7 +514,7 @@ static void ttm_bo_release(struct kref *kref)
                 * shrinkers, now that they are queued for
                 * destruction.
                 */
-               if (bo->pin_count) {
+               if (WARN_ON(bo->pin_count)) {
                        bo->pin_count = 0;
                        ttm_bo_del_from_lru(bo);
                        ttm_bo_add_mem_to_lru(bo, &bo->mem);

which would imply that the only real difference between 5.11.8 and 5.11.9 is
"noise". Is this warning highlighting a real problem?

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