[Bug 94585] New: [KBL] igt/gem_reset_stats regression for some subtests

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94585

            Bug ID: 94585
           Summary: [KBL] igt/gem_reset_stats regression for some subtests
           Product: DRI
           Version: DRI 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: olivierx.berthier at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 122370
  --> https://bugs.freedesktop.org/attachment.cgi?id=122370&action=edit
dmesg

Regression:
-----------
Yes, the subtests were pass with the kernel drm-intel-nightly 4.5.0-rc7_dd7b012
and intel-gpu-tools-1.14-26-g174a06b

Setup:
------
Hardware
Platform: KABY LAKE-U 
CPU : Intel(R) Core(TM) @ 2.60GHz
MCP : KBL-U G0 2+2 (ou ULT-G0)
QDF : QYQ8
Chipset PCH: SPT-LP C1 
CRB : KABY LAKE U DDR3L RVP7 CRB FAB1
Software
BIOS : KBLSE2R1.R00.X015.B01.1511271314
ME FW : 11.5.0.1008
Ksc (EC FW): 1.20
Linux distribution: Ubuntu 15.10 64 bits
Kernel drm-intel-nightly 4.5.0-fc881eb from
http://cgit.freedesktop.org/drm-intel/
  commit fc881ebd9c3c26919c7d1113f8bf7014e1a05563
  Author: Daniel Vetter <daniel.vetter at ffwll.ch>
  Date:   Tue Mar 15 14:11:45 2016 +0100
  drm-intel-nightly: 2016y-03m-15d-13h-10m-41s UTC integration manifest

drm: libdrm-2.4.67-7-g49041c3
cairo: 1.15.2 db8a7f1 
intel-gpu-tool: intel-gpu-tools-1.14-62-g8f6ed9e

Steps:
------
# ./gem_reset_stats --r ban-blt

Actual result:
--------------
The test fail. Same thing for the subtests :
ban-blt
ban-bsd
ban-default
ban-render
ban-vebox

Expected result:
----------------
Subtests are Pass

Program output:
---------------

IGT-Version: 1.14-NOT-GIT (x86_64) (Linux: 4.5.0-nightly+ x86_64)
retrying for ban (9)
(gem_reset_stats:1195) CRITICAL: Test assertion failure function test_ban, file
gem_reset_stats.c:368:
(gem_reset_stats:1195) CRITICAL: Failed assertion: rs_bad.batch_pending ==
pending_count
(gem_reset_stats:1195) CRITICAL: error: 1 != 2
Stack trace:
  #0 [__igt_fail_assert+0xf1]
  #1 [__real_main773+0x18da]
  #2 [main+0x29]
  #3 [__libc_start_main+0xf0]
  #4 [_start+0x29]
  #5 [<unknown>+0x29]
Subtest ban-bsd failed.
**** DEBUG ****
(gem_reset_stats:1195) drmtest-DEBUG: Test requirement passed: fd >= 0
(gem_reset_stats:1195) drmtest-DEBUG: Test requirement passed: fd >= 0
(gem_reset_stats:1195) drmtest-DEBUG: Test requirement passed: fd >= 0
(gem_reset_stats:1195) ioctl-wrappers-DEBUG: Test requirement passed:
gem_has_ring(fd, ring)
(gem_reset_stats:1195) ioctl-wrappers-DEBUG: Test requirement passed:
has_ban_period
(gem_reset_stats:1195) igt-gt-DEBUG: Test requirement passed: has_gpu_reset(fd)
(gem_reset_stats:1195) igt-gt-DEBUG: Test requirement passed: ctx == 0 || ring
== I915_EXEC_RENDER
(gem_reset_stats:1195) ioctl-wrappers-DEBUG: Test requirement passed:
gem_has_ring(fd, ring)
(gem_reset_stats:1195) ioctl-wrappers-DEBUG: Test requirement passed:
has_ban_period
(gem_reset_stats:1195) igt-gt-DEBUG: Test requirement passed: has_gpu_reset(fd)
(gem_reset_stats:1195) igt-gt-DEBUG: Test requirement passed: ctx == 0 || ring
== I915_EXEC_RENDER
(gem_reset_stats:1195) INFO: retrying for ban (9)
(gem_reset_stats:1195) ioctl-wrappers-DEBUG: Test requirement passed:
gem_has_ring(fd, ring)
(gem_reset_stats:1195) ioctl-wrappers-DEBUG: Test requirement passed:
has_ban_period
(gem_reset_stats:1195) igt-gt-DEBUG: Test requirement passed: has_gpu_reset(fd)
(gem_reset_stats:1195) igt-gt-DEBUG: Test requirement passed: ctx == 0 || ring
== I915_EXEC_RENDER
(gem_reset_stats:1195) CRITICAL: Test assertion failure function test_ban, file
gem_reset_stats.c:368:
(gem_reset_stats:1195) CRITICAL: Failed assertion: rs_bad.batch_pending ==
pending_count
(gem_reset_stats:1195) CRITICAL: error: 1 != 2
****  END  ****
Subtest ban-bsd: FAIL (14.339s)

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