[Bug 103964] New: BUG: sleeping function called from invalid context at ./include/linux/percpu-rwsem.h:34

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103964

            Bug ID: 103964
           Summary: BUG: sleeping function called from invalid context at
                    ./include/linux/percpu-rwsem.h:34
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: rafael.antognolli at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 135791
  --> https://bugs.freedesktop.org/attachment.cgi?id=135791&action=edit
Dmesg output with trace.

After a couple GPU hangs, I get the attached trace output.

Sometimes the machine gets totally frozen, although I couldn't reproduce that
with the serial cable attached.

drm-tip from today has the issue:

5144438448829ec2a3d94fd16a9e69a52cfa7b3b
Author: Tvrtko Ursulin <tvrtko.ursulin at intel.com>                               
Date:   Tue Nov 28 17:05:46 2017 +0000                                          

    drm-tip: 2017y-11m-28d-17h-04m-56s UTC integration manifest



And this wouldn't happen on the one from last week:

42670ce69ef7a03b53bea25fad60a9b3931402cf
Author: Lionel Landwerlin <lionel.g.landwerlin at intel.com>                       
Date:   Mon Nov 20 16:11:13 2017 +0000                                          

    drm-tip: 2017y-11m-20d-16h-09m-47s UTC integration manifest

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