<html>
    <head>
      <base href="https://bugs.freedesktop.org/">
    </head>
    <body>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [CI][DRMTIP] igt@gem_exec_await@wide-contexts - dmesg-warn - WARNING: possible circular locking dependency detected"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=111862#c4">Comment # 4</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [CI][DRMTIP] igt@gem_exec_await@wide-contexts - dmesg-warn - WARNING: possible circular locking dependency detected"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=111862">bug 111862</a>
              from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
        <pre>So I think the suspect is:

__unwind_incomplete_requests:

                        /*
                         * Decouple the virtual breadcrumb before moving it
                         * back to the virtual engine -- we don't want the
                         * request to complete in the background and try
                         * and cancel the breadcrumb on the virtual engine
                         * (instead of the old engine where it is linked)!
                         */
                        if (test_bit(DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT,
                                     &rq->fence.flags)) {
                                spin_lock(&rq->lock);
                                i915_request_cancel_breadcrumb(rq);
                                spin_unlock(&rq->lock);
                        }

That would be an extremely rare path to hit, so would be rarely seen by
lockdep.</pre>
        </div>
      </p>


      <hr>
      <span>You are receiving this mail because:</span>

      <ul>
          <li>You are the assignee for the bug.</li>
          <li>You are the QA Contact for the bug.</li>
          <li>You are on the CC list for the bug.</li>
      </ul>
    </body>
</html>