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    <body><span class="vcard"><a class="email" href="mailto:eero.t.tamminen@intel.com" title="Eero Tamminen <eero.t.tamminen@intel.com>"> <span class="fn">Eero Tamminen</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Everything using GPU gets stuck after running+killing parallel Media loads (after running 3D benchmarks)"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=110848">bug 110848</a>
          <br>
             <table border="1" cellspacing="0" cellpadding="8">
          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
          </tr>

         <tr>
           <td style="text-align:right;">Attachment #144476 is obsolete</td>
           <td>
                
           </td>
           <td>1
           </td>
         </tr></table>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Everything using GPU gets stuck after running+killing parallel Media loads (after running 3D benchmarks)"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=110848#c8">Comment # 8</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Everything using GPU gets stuck after running+killing parallel Media loads (after running 3D benchmarks)"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=110848">bug 110848</a>
              from <span class="vcard"><a class="email" href="mailto:eero.t.tamminen@intel.com" title="Eero Tamminen <eero.t.tamminen@intel.com>"> <span class="fn">Eero Tamminen</span></a>
</span></b>
        <pre>Created <span class=""><a href="attachment.cgi?id=144520" name="attach_144520" title="Kernel stacks for all tasks when the problem happens">attachment 144520</a> <a href="attachment.cgi?id=144520&action=edit" title="Kernel stacks for all tasks when the problem happens">[details]</a></span>
Kernel stacks for all tasks when the problem happens

(In reply to Eero Tamminen from <a href="show_bug.cgi?id=110848#c7">comment #7</a>)
<span class="quote">> I've now verified that every time this freeze happens, these are stuck:
> -----------------------------------------------
> Name:      khugepaged
> State:     D (disk sleep)
> Pid:       38
> [<0>] kthread+0x113/0x130
> [<0>] ret_from_fork+0x35/0x40
> --
> Name:      kworker/u8:2+i915
> State:     D (disk sleep)
> Pid:       7911
> [<0>] __i915_gem_free_work+0x5f/0x90 [i915]
> [<0>] process_one_work+0x1e9/0x410
> [<0>] worker_thread+0x2d/0x3d0
> [<0>] kthread+0x113/0x130
> [<0>] ret_from_fork+0x35/0x40
> -----------------------------------------------

> in addition to the stuck transcoding tasks:</span >
[...]

Today, there was no frozen khugepaged, just these:
-----------------------------------------------
Name:   kworker/u8:0+i915
State:  D (disk sleep)
Pid:    7194
[<0>] __i915_gem_free_work+0x5f/0x90 [i915]
[<0>] process_one_work+0x1e9/0x410
[<0>] worker_thread+0x2d/0x3d0
[<0>] kthread+0x113/0x130
[<0>] ret_from_fork+0x35/0x40
...
Name:   ffmpeg
State:  D (disk sleep)
Pid:    9407
[<0>] drm_file_free.part.0+0x1c8/0x280
[<0>] drm_release+0x9c/0xd0
[<0>] __fput+0xae/0x200
[<0>] task_work_run+0x84/0xa0
[<0>] do_exit+0x308/0xba0
[<0>] do_group_exit+0x33/0xa0
[<0>] get_signal+0x121/0x910
[<0>] do_signal+0x30/0x6b0
[<0>] exit_to_usermode_loop+0x96/0xb0
[<0>] do_syscall_64+0x103/0x130
[<0>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
-----------------------------------------------

In addition to the earlier listed transcode processes stuck at fput() and
chrdev_open().  See attachment.

=> I assume khugepaged stuff isn't related to the issue, it was just innocent
bystander.</pre>
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