[Bug 90462] New: [SKL Regression]many kms_flip subcases cases [drm:check_crtc_state [i915]] ERROR mismatch in dpll_hw_state.ctrl1 (expected 0x00000000, found 0x00000001)

Thu May 14 22:20:58 PDT 2015

https://bugs.freedesktop.org/show_bug.cgi?id=90462

            Bug ID: 90462
           Summary: [SKL Regression]many kms_flip subcases cases
                    [drm:check_crtc_state [i915]] *ERROR* mismatch in
                    dpll_hw_state.ctrl1 (expected 0x00000000, found
                    0x00000001)
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: high
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: huax.lu at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 115794
  --> https://bugs.freedesktop.org/attachment.cgi?id=115794&action=edit
dmesg

==System Environment==
--------------------------
Regression: yes

good commit:  de4de566f84b87f4d5f8265b11932088adb19896(dinq)
bad commit: 65de797816eadb227c45b0127d7ff92410fa3814(dinq)

Non-working platforms: SKL

==kernel==
--------------------------
drm-intel-nightly/6cf0fff478fa64991c2b7f2a44f2815d7a43a0b5
commit 6cf0fff478fa64991c2b7f2a44f2815d7a43a0b5
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Wed May 13 11:29:25 2015 +0200

    drm-intel-nightly: 2015y-05m-13d-09h-28m-49s UTC integration manifest

==Bug detailed description==
-----------------------------
It causes <3>[  244.272369] [drm:check_crtc_state [i915]] *ERROR* mismatch in
dpll_hw_state.ctrl1 (expected 0x00000000, found 0x00000001) on SKL with
drm-intel-nightly kernel and drm-intel-next-queued kernel. 

It impacts 50+ cases.
run ./kms_flip --run-subtest blt-flip-vs-dpms 
output:
IGT-Version: 1.10-gc4ec47b (x86_64) (Linux:
4.1.0-rc3_drm-intel-nightly_6cf0ff_20150514+ x86_64)
Using monotonic timestamps
Beginning blt-flip-vs-dpms on crtc 20, connector 34
  3200x1800 60 3200 3248 3280 3316 1800 1802 1807 1816 0xa 0x48 361310
...........
blt-flip-vs-dpms on crtc 20, connector 34: PASSED

Beginning blt-flip-vs-dpms on crtc 25, connector 34
  3200x1800 60 3200 3248 3280 3316 1800 1802 1807 1816 0xa 0x48 361310
............
blt-flip-vs-dpms on crtc 25, connector 34: PASSED

Beginning blt-flip-vs-dpms on crtc 30, connector 34
  3200x1800 60 3200 3248 3280 3316 1800 1802 1807 1816 0xa 0x48 361310
............
blt-flip-vs-dpms on crtc 30, connector 34: PASSED

Subtest blt-flip-vs-dpms: SUCCESS (67.404s)

dmesg:
[  256.217620] [drm:check_crtc_state [i915]] *ERROR* mismatch in
dpll_hw_state.ctrl1 (expected 0x00000000, found 0x00000001)
[  256.350817] ------------[ cut here ]------------
[  256.350854] WARNING: CPU: 0 PID: 5243 at
drivers/gpu/drm/i915/intel_display.c:12094 check_crtc_state+0xb67/0xbd1
[i915]()
[  256.350857] pipe state doesn't match!
[  256.350860] Modules linked in: dm_mod snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic ppdev snd_hda_intel snd_hda_codec
pcspkr snd_hda_core snd_hwdep snd_pcm i2c_i801 snd_timer snd soundcore wmi
battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
joydev
[  256.350954] CPU: 0 PID: 5243 Comm: kms_flip Tainted: G        W      
4.1.0-rc3_drm-intel-nightly_6cf0ff_20150514+ #230
[  256.350958] Hardware name: Intel Corporation Skylake Client platform/Skylake
Y LPDDR3 RVP3, BIOS SKLSE2R1.86C.B067.R00.1412310711 12/31/2014
[  256.350962]  0000000000000000 0000000000000009 ffffffff817a67ac
ffff880092e1f908
[  256.350973]  ffffffff8103ebde ffff880092e1f900 ffffffffa00d1924
ffff880004d40000
[  256.350981]  ffff8801491c7000 ffff880004e20000 ffff880092e1f990
ffff880094879c00
[  256.350988] Call Trace:
[  256.351002]  [<ffffffff817a67ac>] ? dump_stack+0x40/0x50
[  256.351011]  [<ffffffff8103ebde>] ? warn_slowpath_common+0x98/0xb0
[  256.351055]  [<ffffffffa00d1924>] ? check_crtc_state+0xb67/0xbd1 [i915]
[  256.351071]  [<ffffffff8103ec3b>] ? warn_slowpath_fmt+0x45/0x4a
[  256.351123]  [<ffffffffa00d1924>] ? check_crtc_state+0xb67/0xbd1 [i915]
[  256.351198]  [<ffffffffa00e0a65>] ? intel_modeset_check_state+0x4f6/0x87a
[i915]
[  256.351244]  [<ffffffffa00dac4f>] ? intel_post_enable_primary+0x53/0x94
[i915]
[  256.351274]  [<ffffffffa0016ce0>] ?
drm_mode_obj_set_property_ioctl+0xf0/0x193 [drm]
[  256.351299]  [<ffffffffa0016daf>] ?
drm_mode_connector_property_set_ioctl+0x2c/0x31 [drm]
[  256.351321]  [<ffffffffa000a636>] ? drm_ioctl+0x322/0x38d [drm]
[  256.351343]  [<ffffffffa0016d83>] ?
drm_mode_obj_set_property_ioctl+0x193/0x193 [drm]
[  256.351353]  [<ffffffff81123546>] ? do_vfs_ioctl+0x360/0x424
[  256.351359]  [<ffffffff81116053>] ? __fput+0x184/0x19a
[  256.351364]  [<ffffffff81123653>] ? SyS_ioctl+0x49/0x7a
[  256.351371]  [<ffffffff817ac317>] ? system_call_fastpath+0x12/0x6a
[  256.351376] ---[ end trace bac1956cadeda82e ]---

==Reproduce steps==
---------------------------- 
1. ./kms_flip --run-subtest blt-flip-vs-dpms

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[Bug 90462] New: [SKL Regression]many kms_flip subcases cases [drm:check_crtc_state [i915]] *ERROR* mismatch in dpll_hw_state.ctrl1 (expected 0x00000000, found 0x00000001)

[Bug 90462] New: [SKL Regression]many kms_flip subcases cases [drm:check_crtc_state [i915]] ERROR mismatch in dpll_hw_state.ctrl1 (expected 0x00000000, found 0x00000001)