<html>
    <head>
      <base href="https://bugs.freedesktop.org/" />
    </head>
    <body>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [BAT BSW] lockdep splat in drm_gem_mmap"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=94759#c2">Comment # 2</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [BAT BSW] lockdep splat in drm_gem_mmap"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=94759">bug 94759</a>
              from <span class="vcard"><a class="email" href="mailto:joonas.lahtinen@linux.intel.com" title="Joonas Lahtinen <joonas.lahtinen@linux.intel.com>"> <span class="fn">Joonas Lahtinen</span></a>
</span></b>
        <pre>Also in gem_mmap_gtt, same chain:
[  145.549678] ======================================================
[  145.549739] [ INFO: possible circular locking dependency detected ]
[  145.549803] 4.6.0-rc1-gfxbench+ #1 Tainted: G     U         
[  145.549858] -------------------------------------------------------
[  145.549919] gem_mmap_gtt/5996 is trying to acquire lock:
[  145.549971]  (&dev->struct_mutex){+.+.+.}, at: [<ffffffff8151c781>]
drm_gem_mmap+0x1a1/0x270
[  145.550077] 
but task is already holding lock:
[  145.550134]  (&mm->mmap_sem){++++++}, at: [<ffffffff81183204>]
vm_mmap_pgoff+0x44/0xa0
[  145.550230] 
which lock already depends on the new lock.</pre>
        </div>
      </p>
      <hr>
      <span>You are receiving this mail because:</span>
      
      <ul>
          <li>You are the QA Contact for the bug.</li>
          <li>You are on the CC list for the bug.</li>
      </ul>
    </body>
</html>