Created attachment 119630 [details]
dmesg

This two subtest of gem_concurrent_blit fail they were pass with last setup:

igt@gem_concurrent_blit@gttx-render-intermix-bcs-forked
igt@gem_concurrent_blit@gttX-render-intermix-rcs-forked


Actual setup (test fail):
=============
Hardware:
Platform: Braswell M 
CPU : Intel(R) Celeron N3060 1.60GHz @ 1.6 GHz (family: 6, model: 76 stepping: 4)
SoC : BSW C0
QDF : K6XC
CRB : BRASWELL RVP Fab2
Mandatory Reworks : All Feature Reworks: F28, F32, F33, F35, F37
Optional reworks : O-01a; O-02, O-03 

Software:
Linux distribution: Ubuntu 15.04 LTS 64 bits 
BIOS : BRAS.X64.B084.R00.1508310642
TXE FW : 2.0.0.2073
Ksc : 1.08
kernel  drm-intel-nightly
Commit a3b0dec82fdb59c629c4fb9847245b80b0cf69dd
Author: Jani Nikula <jani.nikula@intel.com>
Date:   Fri Nov 6 14:48:23 2015 +0200
drm-intel-nightly: 2015y-11m-06d-12h-48m-02s UTC integration manifest
cairo: (HEAD, tag: 1.14.2) 93422b3cb5e0ef8104b8194c8873124ce2f5ea2d from git://git.freedesktop.org/git/cairo
drm: (HEAD, tag: libdrm-2.4.65, tag: 2.4.65) c3496167637e35cf8a52d5e7e53a412e79d80db0 from git://git.freedesktop.org/git/mesa/drm
intel-driver: (HEAD, tag: 1.6.1, origin/v1.6-branch) 35858c69166b845c59ca32e19a3dbb0b758df209 from git://git.freedesktop.org/git/vaapi/intel-driver
libva: (HEAD, tag: libva-1.6.1, origin/v1.6-branch) 613eb962b45fbbd1526d751e88e0d8897af6c0e0 from git://git.freedesktop.org/git/vaapi/libva
mesa: (HEAD, tag: mesa-11.0.4) 31bf24703193cc23961923e01548b1acb2760a93 from git://git.freedesktop.org/git/mesa/mesa
xf86-video-intel: (HEAD, tag: 2.99.917) baec802b21387d04aebb10ac29e719a1800c5aa0 from git://git.freedesktop.org/git/xorg/driver/xf86-video-intel
xserver: (HEAD, tag: xorg-server-1.17.2) 2123f7682d522619f101b05fb75efa75dabbe371 from git://git.freedesktop.org/git/xorg/xserver
* Tools *
intel-gpu-tools: (HEAD, origin/master, origin/HEAD, master) bfea74a9f64a900bcb90f946b38746781017449f from git://git.freedesktop.org/git/xorg/app/intel-gpu-tools

Previous Setup (test pass):
============================
=============
Hardware:
Platform: Braswell M 
CPU : Intel(R) Celeron N3060 1.60GHz @ 1.6 GHz (family: 6, model: 76 stepping: 4)
SoC : BSW C0
QDF : K6XC
CRB : BRASWELL RVP Fab2
Mandatory Reworks : All Feature Reworks: F28, F32, F33, F35, F37
Optional reworks : O-01a; O-02, O-03 

Software :
Linux distribution: Ubuntu 15.04 LTS 64 bits 
BIOS : BRAS.X64.B084.R00.1508310642
TXE FW : 2.0.0.2073
Ksc : 1.08
kernel 4.3.0-rc7-nightly+
commit 86ba603f327626055fe1436112b3786eaaaf7fb1
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Sat Oct 31 09:27:21 2015 +0100
drm-intel-nightly: 2015y-10m-31d-08h-26m-39s UTC integration manifest

cairo: (HEAD, tag: 1.14.2) 93422b3cb5e0ef8104b8194c8873124ce2f5ea2d from git://git.freedesktop.org/git/cairo
drm: (HEAD, tag: libdrm-2.4.65, tag: 2.4.65) c3496167637e35cf8a52d5e7e53a412e79d80db0 from git://git.freedesktop.org/git/mesa/drm
intel-driver: (HEAD, tag: 1.6.1, origin/v1.6-branch) 35858c69166b845c59ca32e19a3dbb0b758df209 from git://git.freedesktop.org/git/vaapi/intel-driver
libva: (HEAD, tag: libva-1.6.1, origin/v1.6-branch) 613eb962b45fbbd1526d751e88e0d8897af6c0e0 from git://git.freedesktop.org/git/vaapi/libva
mesa: (HEAD, tag: mesa-11.0.4) 31bf24703193cc23961923e01548b1acb2760a93 from git://git.freedesktop.org/git/mesa/mesa
xf86-video-intel: (HEAD, tag: 2.99.917) baec802b21387d04aebb10ac29e719a1800c5aa0 from git://git.freedesktop.org/git/xorg/driver/xf86-video-intel
xserver: (HEAD, tag: xorg-server-1.17.2) 2123f7682d522619f101b05fb75efa75dabbe371 from git://git.freedesktop.org/git/xorg/xserver

* Tools *
intel-gpu-tools: (HEAD, origin/master, origin/HEAD, master) bfea74a9f64a900bcb90f946b38746781017449f from git://git.freedesktop.org/git/xorg/app/intel-gpu-tools

Actual Results:
===============
./gem_concurrent_blit --run-subtest gttX-render-intermix-rcs-forked
IGT-Version: 1.12-gbfea74a (x86_64) (Linux: 4.3.0-nightly+ x86_64)
using 2x512 buffers, each 1MiB
Test assertion failure function gtt_cmp_bo, file gem_concurrent_all.c:129:
Failed assertion: vaddr[y*width+y] == val
error: 0x4633d0 != 0x2152410a
Stack trace:
  #0 [__igt_fail_assert+0x101]
  #1 [gtt_cmp_bo+0x96]
  #2 [do_intermix+0x20c]
  #3 [run_forked+0xb8]
  #4 [run_basic_modes+0x67c]
  #5 [__real_main1065+0xae]
  #6 [main+0x23]
  #7 [__libc_start_main+0xf0]
  #8 [_start+0x29]
  #9 [<unknown>+0x29]
child 10 failed with exit status 99
Subtest gttX-render-intermix-rcs-forked failed.
**** DEBUG ****
Test requirement passed: rendercopy
Test requirement passed: rendercopy
****  END  ****
Subtest gttX-render-intermix-rcs-forked: FAIL (2.772s)


./gem_concurrent_blit --run-subtest gttX-render-intermix-bcs-forked
IGT-Version: 1.12-gbfea74a (x86_64) (Linux: 4.3.0-nightly+ x86_64)
using 2x512 buffers, each 1MiB
Test assertion failure function gtt_cmp_bo, file gem_concurrent_all.c:129:
Failed assertion: vaddr[y*width+y] == val
error: 0x4633d0 != 0x21524113
Stack trace:
  #0 [__igt_fail_assert+0x101]
  #1 [gtt_cmp_bo+0x96]
  #2 [do_intermix+0x20c]
  #3 [run_forked+0xb8]
  #4 [run_basic_modes+0x79c]
  #5 [__real_main1065+0xae]
  #6 [main+0x23]
  #7 [__libc_start_main+0xf0]
  #8 [_start+0x29]
  #9 [<unknown>+0x29]
child 8 failed with exit status 99
Subtest gttX-render-intermix-bcs-forked failed.
**** DEBUG ****
Test requirement passed: rendercopy
Test requirement passed: rendercopy
****  END  ****
Subtest gttX-render-intermix-bcs-forked: FAIL (4.680s)