[Bug 84891] [BYT/BSW Regression full-ppgtt] igt/gem_concurrent_blit/gtt-bcs-overwrite-source-forked fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84891

Guo Jinxian <jinxianx.guo at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |ASSIGNED

--- Comment #5 from Guo Jinxian <jinxianx.guo at intel.com> ---
(In reply to Mika Kuoppala from comment #4)
> Please submit result of:
> 
> # cat /sys/kernel/debug/dri/0/i915_wedged
> 
> After the failed test.

Test still fails, but dmesg error unable to reproduce. the value about
i915_wedged is 0.

[root at x-bsw01 tests]# ./gem_concurrent_blit --run-subtest
gtt-bcs-overwrite-source-forked
IGT-Version: 1.8-ge497600 (x86_64) (Linux:
3.18.0-rc1_drm-intel-nightly_6f628c_20141024+ x86_64)
using 2x512 buffers, each 1MiB
Test assertion failure function gtt_cmp_bo, file gem_concurrent_blit.c:124:
Failed assertion: vaddr[y*width+y] == val
error: 0xf000ef57 != 0x7
child 0 failed with exit status 99
Subtest gtt-bcs-overwrite-source-forked: FAIL (1.872s)
[root at x-bsw01 tests]# dmesg -r|egrep "<[1-4]>"|grep drm
[root at x-bsw01 tests]# cat /sys/kernel/debug/dri/0/i915_wedged
0

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