Comment # 5 on bug 105379 from Timothy Arceri

Yeah I suspect the following commit fixed it:

commit 7083ac7290a0c37a45494437a45441112f3cc36c
Author: Marek Olšák <marek.olsak@amd.com>
Date:   Tue Apr 24 17:01:35 2018 -0400

    util/u_queue: fix a deadlock in util_queue_finish

    Cc: 18.0 18.1 <mesa-stable@lists.freedesktop.org>
    Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

Feel free to reopen if you are still having problems.