[Bug 78274] [BDW Bisected]BUG: unable to handle kernel paging request at ffffc900110a0000

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78274

--- Comment #11 from lu hua <huax.lu at intel.com> ---
(In reply to comment #10)
> You sure you used the right patch?
> 
> drivers/gpu/drm/i915/intel_ringbuffer.c:725:33: error: ‘dev’ undeclared 
> 
> It should have been ring->dev

Sorry. It fixed by the 2nd patch.
Run: ./gem_exec_nop --run-subtest render
output:
IGT-Version: 1.6-g7935bbd (x86_64) (Linux: 3.15.0-rc3_prts_2557e2_20140508
x86_64)
Test assertion failure function gem_quiescent_gpu, file drmtest.c:158:
Last errno: 5, Input/output error
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
Subtest render: FAIL

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