Created attachment 97335 [details]
prime_self_import dmesg

System Environment:
--------------------------
Platform: IVB HSW
kernel:   (drm-intel-nightly)cf8c74f4e33678bc5151df4b68cb7f8c2b51bf6e
intel-gpu-tools: cc730c418f44245c49776059b2564f54da4449e6

Bug detailed description:
----------------------------
Subcase export-vs-gem_close-race of prime_self_import failed.

It's intel-gpu-tools regression issue:

2f2c491cf3167befe7c79e4b17afb4f6284dfc84 is the first bad commit
commit 2f2c491cf3167befe7c79e4b17afb4f6284dfc84
Author: Mika Kuoppala <mika.kuoppala@intel.com>
Date:   Fri Mar 28 10:52:46 2014 +0200

    lib/drmtest: don't dup quiescent fd

    If we dup the fd, we are in mercy of the context banning
    of the test application. Better to have our own to guarantee
    that gem_quiescent_gpu won't find itself banned on exit.

    Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>

:040000 040000 ceeb48448f495672745b61fb7e7a61f151f26cc5 4dddf6d79c79df33d39e193bcf81898b149d6973 M      lib



output on -nightly kernel:
[root@x-ivb9 tests]# ./prime_self_import --run-subtest export-vs-gem_close-race
IGT-Version: 1.6-gcc730c4 (x86_64) (Linux: 3.14.0_drm-intel-nightly_cf8c74_20140414_debug+ x86_64)
leaked 1 objects
Test assertion failure function test_export_close_race, file prime_self_import.c:371:
Last errno: 0, Success
Failed assertion: obj_count == 0
Subtest export-vs-gem_close-race: FAIL


Reproduce steps:
---------------------------- 
1.  ./prime_self_import --run-subtest export-vs-gem_close-race