Well I've found a minor bug in TTM (false positive warning), but was never able to reproduce this issue.

What hardware generation did you use for testing?

Christian.


Am 25.10.2017 um 17:54 schrieb Michel Dänzer:
On 25/10/17 05:51 PM, Christian König wrote:
Going to take a look tomorrow.
Thanks.

FWIW, it's the line at drivers/dma-buf/reservation.c:485:

        if (!fence && wait_all) {
                struct reservation_object_list *fobj =
                                                rcu_dereference(obj->fence);

                if (fobj)
                        shared_count = fobj->shared_count; <===



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