[Bug 100179] New: [KBL][BAT] kms_flip at basic-flip-vs-dpms causes dmesg warning in CI

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100179

            Bug ID: 100179
           Summary: [KBL][BAT] kms_flip at basic-flip-vs-dpms causes dmesg
                    warning in CI
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: jani.saarinen at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

On CI testkms_flip at basic-flip-vs-dpms causes dmesg warning:
https://intel-gfx-ci.01.org/CI/CI_DRM_2318/fi-kbl-7500u/igt@kms_flip@basic-flip-vs-dpms.html

Dmesg   
[  353.385043] ------------[ cut here ]------------
[  353.385085] WARNING: CPU: 0 PID: 8633 at
drivers/gpu/drm/i915/intel_runtime_pm.c:676 skl_enable_dc6+0xb5/0xc0 [i915]
[  353.385098] DC6 already programmed to be enabled.
[  353.385106] Modules linked in: vgem x86_pkg_temp_thermal intel_powerclamp
coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec
snd_hwdep snd_hda_core snd_pcm mei_me mei i915 e1000e ptp pps_core
prime_numbers i2c_hid
[  353.385166] CPU: 0 PID: 8633 Comm: kms_flip Tainted: G     U         
4.11.0-rc1-CI-CI_DRM_2318+ #1
[  353.385170] Hardware name: GIGABYTE GB-BKi7(H)A-7500/MFLP7AP-00, BIOS F4
02/20/2017
[  353.385175] Call Trace:
[  353.385184]  dump_stack+0x67/0x92
[  353.385192]  __warn+0xc6/0xe0
[  353.385202]  warn_slowpath_fmt+0x4a/0x50
[  353.385241]  skl_enable_dc6+0xb5/0xc0 [i915]
[  353.385282]  gen9_dc_off_power_well_disable+0x2a/0x30 [i915]
[  353.385323]  intel_power_well_disable+0x39/0x40 [i915]
[  353.385364]  intel_display_power_put+0xb1/0x120 [i915]
[  353.385415]  intel_atomic_commit_tail+0xbdd/0x1000 [i915]
[  353.385424]  ? __queue_work+0x17c/0x620
[  353.385474]  intel_atomic_commit+0x42f/0x540 [i915]
[  353.385483]  ? refcount_dec_and_test+0x11/0x20
[  353.385491]  drm_atomic_commit+0x46/0x50
[  353.385499]  drm_atomic_helper_connector_dpms+0xea/0x160
[  353.385508]  drm_mode_connector_set_obj_prop+0x5d/0x70
[  353.385515]  drm_mode_obj_set_property_ioctl+0xf5/0x140
[  353.385524]  drm_mode_connector_property_set_ioctl+0x2b/0x30
[  353.385530]  drm_ioctl+0x200/0x450
[  353.385537]  ? drm_mode_connector_set_obj_prop+0x70/0x70
[  353.385548]  ? __vfs_read+0x23/0x110
[  353.385556]  do_vfs_ioctl+0x90/0x6e0
[  353.385564]  SyS_ioctl+0x3c/0x70
[  353.385573]  entry_SYSCALL_64_fastpath+0x1c/0xb1
[  353.385579] RIP: 0033:0x7fded0ae5357
[  353.385584] RSP: 002b:00007ffe83a5e278 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[  353.385591] RAX: ffffffffffffffda RBX: 00007ffe83a5c360 RCX:
00007fded0ae5357
[  353.385597] RDX: 00007ffe83a5e2b0 RSI: 00000000c01064ab RDI:
0000000000000003
[  353.385601] RBP: 0000000001ffa338 R08: 0000000000000001 R09:
0000000000000001
[  353.385606] R10: 0004d8a0d4258226 R11: 0000000000000246 R12:
0000000000000010
[  353.385611] R13: 000000000000036f R14: 0000000001000100 R15:
00000000ff000000
[  353.385620] ---[ end trace 71b60eff0664b049 ]---
[  353.386024] [drm:gen9_set_dc_state [i915]] *ERROR* DC state mismatch (0x0 ->
0x2)

Dmesg during:
https://intel-gfx-ci.01.org/CI/CI_DRM_2318/fi-kbl-7500u/dmesg-during.log

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