[Bug 104020] New: [IGT] igt at gem_exec_suspend@basic-s3 randomly fails with !"GPU hung" assertion

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104020

            Bug ID: 104020
           Summary: [IGT] igt at gem_exec_suspend@basic-s3 randomly fails
                    with !"GPU hung" assertion
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: elizabethx.de.la.torre.mena at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 135859
  --> https://bugs.freedesktop.org/attachment.cgi?id=135859&action=edit
Test debug information and dmesg errors

In SKL, with test igt at gem_exec_suspend@basic-s3, we're getting this fail
sometimes when running daily fast-feedback. Looking at history of error in
dmesg, I believe the test is being affected by previous tests. Seems a lot like
error on bug 103049. Can't replicate it running the test manually.

Assertion:
(gem_exec_suspend:7270) igt-aux-CRITICAL: Test assertion failure function
sig_abort, file igt_aux.c:482:
(gem_exec_suspend:7270) igt-aux-CRITICAL: Failed assertion: !"GPU hung"
Subtest basic-S3 failed.

Output:
IGT-Version: 1.20-g476c4b4 (x86_64) (Linux:
4.15.0-rc1-drm-intel-qa-ww48-commit-807db75+ x86_64)
[cmd] rtcwake: assuming RTC uses UTC ...
rtcwake: wakeup from "mem" using /dev/rtc0 at Fri Dec  1 09:03:00 2017
Stack trace:
  #0 [__igt_fail_assert+0x101]
  #1 [sig_abort+0x3a]
  #2 [killpg+0x40]
  #3 [ioctl+0x5]
  #4 [drmIoctl+0x28]
  #5 [gem_wait+0x87]
  #6 [gem_sync+0x11]
  #7 [gem_quiescent_gpu+0xd2]
  #8 [run_test+0x43b]
  #9 [__real_main243+0x2a5]
  #10 [main+0x23]
  #11 [__libc_start_main+0xf1]
  #12 [_start+0x29]
  #13 [<unknown>+0x29]
Subtest basic-S3: FAIL (13.363s)

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