[Bug 96231] New: [IGT] [BXT-P] gem_ctx_thrash subtest processes fail (do_trap: 39 callbacks suppressed)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96231

            Bug ID: 96231
           Summary: [IGT] [BXT-P] gem_ctx_thrash subtest processes fail
                    (do_trap: 39 callbacks suppressed)
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: humberto.i.perez.rodriguez at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 124112
  --> https://bugs.freedesktop.org/attachment.cgi?id=124112&action=edit
dmesg

Bug description
===============================================
gem_ctx_thrash subtest processes fail, dmesg show the message 
do_trap: 39 callbacks suppressed

Test output
===============================================
IGT-Version: 1.14-gcce2ff0 (x86_64) (Linux:
4.6.0-rc7-drm-intel-nightly-ww20-commit-5528ede+ x86_64)
(gem_ctx_thrash:1712) igt-core-DEBUG: Test requirement passed:
!igt_run_in_simulation()
(gem_ctx_thrash:1712) igt-core-DEBUG: Starting subtest: processes
(gem_ctx_thrash:1712) drmtest-DEBUG: Test requirement passed: fd >= 0
Creating 98304 contexts (assuming of size 65536)
(gem_ctx_thrash:1712) intel-os-DEBUG: Checking 98,304 surfaces of size 65,536
bytes (total 6,492,782,592) against RAM + swap
(gem_ctx_thrash:1712) intel-os-DEBUG: Test requirement passed:
__intel_check_memory(count, size, mode, &required, &total)
(gem_ctx_thrash:1712) igt-core-DEBUG: Test requirement passed:
!igt_run_in_simulation()
(gem_ctx_thrash:1712) drmtest-DEBUG: Test requirement passed: fd >= 0
(gem_ctx_thrash:1712) drmtest-DEBUG: Test requirement passed: fd >= 0
(gem_ctx_thrash:1712) drmtest-DEBUG: Test requirement passed: fd >= 0
(gem_ctx_thrash:1712) drmtest-DEBUG: Test requirement passed: fd >= 0
(gem_ctx_thrash:1712) drmtest-DEBUG: Test requirement passed: fd >= 0
(gem_ctx_thrash:1712) drmtest-DEBUG: Test requirement passed: fd >= 0
(gem_ctx_thrash:1712) drmtest-DEBUG: Test requirement passed: fd >= 0
(gem_ctx_thrash:1712) drmtest-DEBUG: Test requirement passed: fd >= 0
child 1 died with signal 8, Floating point exception
Subtest processes failed.
**** DEBUG ****
****  END  ****
[1mSubtest processes: FAIL (24.924s)[0m
(gem_ctx_thrash:1712) igt-core-DEBUG: Exiting with status code 136


Expected results
===============================================
test must pass

Actual results
===============================================
test fail

Attachments
===============================================
dmesg


Gfx stack information
===============================================
 --> Component : drm 
         tag : libdrm-2.4.68-4-g7aab852 
         commit : 7aab852 
 --> Component : mesa 
         tag : mesa-11.1.2 
         commit : 7bcd827 
 --> Component : cairo 
         tag : 1.15.2 
         commit : db8a7f1 
 --> Component : intel-gpu-tools
         tag : intel-gpu-tools-1.14-346-gcce2ff0
         commit : cce2ff0


Software information
===============================================
Kernel version                      :
4.6.0-rc7-drm-intel-nightly-ww20-commit-5528ede+
Linux distribution                  : Ubuntu 15.10
Architecture                        : 64-bit
Bios revision                       : 138.22
KSC revision                        : 1.12
DMC revision                        : 1.07
GUC revision                        : 8.7


Hardware information
===============================================
Platform                            : BXT-P
Motherboard model                   : Broxton P
Motherboard type                    : NOTEBOOK Hand Held
Motherboard manufacturer            : Intel Corp.
CPU family                          : B1
CPU information                     : 06/5c
GPU Card                            : Intel Corporation Device 5a84 (rev 0a)
(prog-if 00 [VGA controller])


kernel
===============================================
commit 2ec823981d62c56d1511bda42b8295e31ece800f
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Sun May 22 18:23:13 2016 +0200

    drm-intel-nightly: 2016y-05m-22d-16h-22m-45s UTC integration manifest

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