Created attachment 119647 [details]
dmesg

Igt test gem_pwrite_snooped is fail with last setup

setup:
======

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


Reproducing steps:
==================
./gem_pwrite_snooped

Actual result:
==============
IGT-Version: 1.12-gbfea74a (x86_64) (Linux: 4.3.0-nightly+ x86_64)
Test assertion failure function test, file gem_pwrite_snooped.c:125:
Failed assertion: memchr_inv(buf, 0xff, object_size) == NULL
Stack trace:
  #0 [__igt_fail_assert+0x101]
  #1 [main+0x308]
  #2 [__libc_start_main+0xf0]
  #3 [_start+0x29]
  #4 [<unknown>+0x29]
Test gem_pwrite_snooped failed.
**** DEBUG ****
(gem_pwrite_snooped:1052) igt-core-DEBUG: Test requirement passed: !igt_run_in_simulation()
Test requirement passed: fd >= 0
Test requirement passed: ret == 0
Test requirement passed: ret == 0
Test assertion failure function test, file gem_pwrite_snooped.c:125:
Failed assertion: memchr_inv(buf, 0xff, object_size) == NULL
****  END  ****
FAIL (0.004s)