Bug 87024

Summary: [BYT]igt/drm_import_export causes system hang
Product: DRI Reporter: Guo Jinxian <jinxianx.guo>
Component: DRM/IntelAssignee: Intel GFX Bugs mailing list <intel-gfx-bugs>
Status: CLOSED FIXED QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: critical    
Priority: high CC: intel-gfx-bugs
Version: DRI git   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:

Description Guo Jinxian 2014-12-05 08:24:33 UTC 
==System Environment==
--------------------------
Regression: Not sure.
I didn't find good commit on both kernel and igt. I will investigte it later.

Non-working platforms: BYT

==kernel==
--------------------------
origin/drm-intel-nightly: 2014_12_02(fails)
origin/drm-intel-next-queued:6c930688cb04e81ca71092baf585f7ea1c670368(fails)
    drm/i915/skl: Update the DDI translation values for DP/eDP 1.3
origin/drm-intel-fixes: b0616c5306b342ceca07044dbc4f917d95c4f825(fails)
    drm/i915: Unlock panel even when LVDS is disabled

==Bug detailed description==
-----------------------------
igt/drm_import_export causes system hang.

Because system hang, unable to get dmesg. And here nothing output on the screen

Output:
root@x-byt06:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./drm_import_export
IGT-Version: 1.8-ga535cde (x86_64) (Linux: 3.18.0-rc7_drm-intel-nightly_691817_20141202+ x86_64)



==Reproduce steps==
---------------------------- 
1. ./drm_import_export
Comment 1 Jani Nikula 2015-02-12 13:52:24 UTC 
Is this still reproducible with current drm-intel-nightly? Any chance to get the dmesg with netconsole?
Comment 2 Ding Heng 2015-02-26 08:18:02 UTC 
Tested with kernel commit: b18ca534ab790c19aefe8ecbec46d1bc7a31ce1e
This issue still exist, system will hang after run this case, not any output on the screen.
Comment 3 Jesse Barnes 2015-04-02 16:29:16 UTC 
Seems to work now.  It's possible it's related to the patches for:

https://bugs.freedesktop.org/show_bug.cgi?id=89611

since those were the only thing I had in my tree on top of drm-intel-nightly, but I don't see how they would be.
Comment 4 Ding Heng 2015-04-03 05:54:41 UTC 
pass on latest nightly branch close.

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