[Bug 80208] New: [ILK/SNB/IVB/HSW]igt/gem_userptr_blits unable to exit

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80208

          Priority: medium
            Bug ID: 80208
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [ILK/SNB/IVB/HSW]igt/gem_userptr_blits unable to exit
        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 101330
  --> https://bugs.freedesktop.org/attachment.cgi?id=101330&action=edit
dmesg

==System Environment==
--------------------------
Regression: No. 
It's new case

Non-working platforms: ILK SNB IVB HSW

==kernel==
--------------------------
origin/drm-intel-nightly: fff6c5111af7356d3815521f597959554e7bc1cc(fails)
    drm-intel-nightly: 2014y-06m-18d-00h-49m-52s integration manifest
origin/drm-intel-next-queued: 27b6c122512ca30399bb1b39cc42eda83901f304(fails)
    drm/i915/chv: Ack interrupts before handling them (CHV)
origin/drm-intel-fixes: 223a6f2b975ab35d93270ea1d4fb6e0ac6b27fe6(fails)
    drm/i915/bdw: remove erroneous chv specific workarounds from bdw code

==Bug detailed description==
-----------------------------
igt/gem_userptr_blits unable to exist


Case list:
igt/gem_userptr_blits/forked-sync-interruptible
igt/gem_userptr_blits/forked-sync-mempressure-interruptible
igt/gem_userptr_blits/forked-sync-mempressure-normal
igt/gem_userptr_blits/forked-sync-multifd-interruptible
igt/gem_userptr_blits/forked-sync-multifd-mempressure-interruptible
igt/gem_userptr_blits/forked-sync-multifd-mempressure-normal
igt/gem_userptr_blits/forked-sync-swapping-interruptible
igt/gem_userptr_blits/forked-sync-swapping-mempressure-interruptible
igt/gem_userptr_blits/forked-sync-swapping-mempressure-normal
igt/gem_userptr_blits/forked-sync-swapping-multifd-interruptible
igt/gem_userptr_blits/forked-sync-swapping-multifd-mempressure-interruptible
igt/gem_userptr_blits/forked-sync-swapping-multifd-mempressure-normal
igt/gem_userptr_blits/forked-unsync-multifd-mempressure-normal
igt/gem_userptr_blits/forked-unsync-swapping-mempressure-normal
igt/gem_userptr_blits/forked-unsync-swapping-multifd-mempressure-interruptible
igt/gem_userptr_blits/forked-unsync-swapping-multifd-mempressure-normal
igt/gem_userptr_blits/swapping-normal-sync
igt/gem_userptr_blits/swapping-sync-interruptible
igt/gem_userptr_blits/swapping-unsync-interruptible
igt/gem_userptr_blits/swapping-unsync-normal


Output:
[root at x-hsw27 tests]# time ./gem_userptr_blits --run-subtest
forked-sync-interruptible
IGT-Version: 1.7-g1b1f4b1 (x86_64) (Linux:
3.15.0-rc8_drm-intel-fixes_223a6f_20140618+ x86_64)
Aperture size is 2048 MiB
Total RAM is 7669 MiB
Testing unsynchronized mappings...
Testing synchronized mappings...


^C
real    18m10.336s
user    0m4.631s
sys     97m46.113s


==Reproduce steps==
---------------------------- 
1. ./gem_userptr_blits --run-subtest forked-sync-interruptible

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