[Bug 92671] New: drm stuck on render ring when running prefix sum kernel

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92671

            Bug ID: 92671
           Summary: drm stuck on render ring when running prefix sum
                    kernel
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: edward.ching at huawei.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 119188
  --> https://bugs.freedesktop.org/attachment.cgi?id=119188&action=edit
Attached is the crash dump from sys/class/drm/card0/error

With Beignet OpenCL 1.1.1 (and Beignet git master tip from 2015-10-23 as well),
when running prefix sum kernel on GPU on Intel i7-4770R (and E3-1265L v4 as
well)gets "[drm] stuck on render ring" error and crash dump is generated. The
attached crash dump is from Intel i7-4770R.

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