[Bug 81094] New: [BYT Regression]igt/gem_cpu_reloc fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81094

          Priority: high
            Bug ID: 81094
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BYT Regression]igt/gem_cpu_reloc fails
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jinxianx.guo at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 102474
  --> https://bugs.freedesktop.org/attachment.cgi?id=102474&action=edit
dmesg

==System Environment==
--------------------------
Regression: Yes. 

Good commit on -next-queued: a70995de6e42423549dfa192b71110f67da8530e

Non-working platforms: BYT

==kernel==
--------------------------
origin/drm-intel-nightly: ed4d04defe2c6962efe8f4ba3587a8e69e06d2dd(fails)
    drm-intel-nightly: 2014y-07m-08d-21h-05m-49s integration manifest
origin/drm-intel-next-queued: 31685c258e0b0ad6aa486c5ec001382cf8a64212(fails)
    drm/i915/vlv: WA for Turbo and RC6 to work together.
origin/drm-intel-fixes: 72f5fd2a9815b49d0e6df063025aa55e9bc2435d(works)
    drm/i915/vlv: T12 eDP panel timing enforcement during reboot

==Bug detailed description==
-----------------------------
igt/gem_cpu_reloc fails.

This bug only occurs on one byt device, the result on other byt device was
passed.

Output:
[root at x-byt05 tests]# ./gem_cpu_reloc
IGT-Version: 1.7-g8d60b82 (x86_64) (Linux:
3.16.0-rc4_drm-intel-next-queued_31685c_20140709+ x86_64)
gem_cpu_reloc:  49%Test assertion failure function exec, file
gem_cpu_reloc.c:120:
Last errno: 22, Invalid argument
Failed assertion: (drmIoctl(fd, (((1U) << (((0+8)+8)+14)) | ((('d')) << (0+8))
| (((0x40 + 0x29)) << 0) | ((((sizeof(struct drm_i915_gem_execbuffer2)))) <<
((0+8)+8))), &execbuf)) == 0


==Reproduce steps==
---------------------------- 
1. ./gem_cpu_reloc

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