[Bug 86228] New: [PNV]igt/kms_flip causes *ERROR* mismatch in adjusted_mode.crtc_clock (expected 65000, found -3840)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86228

            Bug ID: 86228
           Summary: [PNV]igt/kms_flip causes *ERROR* mismatch in
                    adjusted_mode.crtc_clock (expected 65000, found -3840)
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         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 109375
  --> https://bugs.freedesktop.org/attachment.cgi?id=109375&action=edit
dmesg

==System Environment==
--------------------------
Regression: not sure

Non-working platforms:  PNV

==kernel==
--------------------------
drm-intel-nightly/de6d6ca380bba4f962f942089b0a212d9b3977c1

==Bug detailed description==
kms_flip causes *ERROR* mismatch in adjusted_mode.crtc_clock (expected 65000,
found -3840) with -nightly kernel. -queued kernel boot fail(bug 85835), So I
don't test -queued kernel. 
Test -nightly kernel commit 2ea23cd593ba60ead60e2f796fae675aa4475b1a and
-queued kernel commit fff95501f2095fa8a9dbd7e177bbf642d241b2fe, they work well.

run  ./kms_flip --run-subtest absolute-wf_vblank
output:
IGT-Version: 1.8-g50d539e (i686) (Linux:
3.18.0-rc3_drm-intel-nightly_de6d6c_20141111+ i686)
Using monotonic timestamps
Beginning absolute-wf_vblank on crtc 10, connector 11
  1024x600 60 1024 1072 1104 1200 600 603 609 625 0xa 0x48 45000
.............................................................................................................................
absolute-wf_vblank on crtc 10, connector 11: PASSED

Beginning absolute-wf_vblank on crtc 7, connector 17
  1024x768 60 1024 1048 1184 1344 768 771 777 806 0xa 0x40 65000
............................................................................................................................
absolute-wf_vblank on crtc 7, connector 17: PASSED

Beginning absolute-wf_vblank on crtc 10, connector 17
  1024x768 60 1024 1048 1184 1344 768 771 777 806 0xa 0x40 65000
.........................................................................................................................
absolute-wf_vblank on crtc 10, connector 17: PASSED

Subtest absolute-wf_vblank: SUCCESS (30.877s)


[  164.687447] [drm:check_crtc_state [i915]] *ERROR* mismatch in
adjusted_mode.crtc_clock (expected 65000, found -3840)
[  164.687458] ------------[ cut here ]------------
[  164.687520] WARNING: CPU: 1 PID: 3606 at
drivers/gpu/drm/i915/intel_display.c:10625 check_crtc_state+0xa07/0xa35
[i915]()
[  164.687527] pipe state doesn't match!
[  164.687532] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support
msi_laptop sparse_keymap rfkill pcspkr i2c_i801 snd_hda_codec_realtek lpc_ich
mfd_core snd_hda_codec_generi
c snd_hda_intel snd_hda_controller snd_hda_codec r8169 snd_hwdep snd_pcm
snd_timer snd soundcore wmi ac battery acpi_cpufreq joydev i915 button video
drm_kms_helper drm cfbfillr
ect cfbimgblt cfbcopyarea
[  164.687608] CPU: 1 PID: 3606 Comm: kms_flip Tainted: G        W     
3.18.0-rc3_drm-intel-nightly_de6d6c_20141111+ #1386
[  164.687615] Hardware name: MICRO-STAR INTERNATIONAL CO., LTD
MS-N014/MS-N014, BIOS EN014IMS.10B 11/30/2009
[  164.687622]  00000000 c16fd68c c002bac0 c102dbcc f8359f9f f5886000 0000fde8
fffff100
[  164.687639]  f5886670 c102dc47 00000009 c002bac0 f83a8524 c002bad8 f8359f9f
f83a6c2b
[  164.687656]  00002981 f83a8524 00000000 f58e93c4 c12dd66c c002bafc 03000000
f5a70800
[  164.687674] Call Trace:
[  164.687694]  [<c16fd68c>] ? dump_stack+0x3e/0x4e
[  164.687708]  [<c102dbcc>] ? warn_slowpath_common+0x65/0x78
[  164.687776]  [<f8359f9f>] ? check_crtc_state+0xa07/0xa35 [i915]
[  164.687789]  [<c102dc47>] ? warn_slowpath_fmt+0x29/0x2d
[  164.687858]  [<f8359f9f>] ? check_crtc_state+0xa07/0xa35 [i915]
[  164.687874]  [<c12dd66c>] ? number.isra.2+0x155/0x249
[  164.687945]  [<f8364dae>] ? intel_modeset_check_state+0x401/0x6d3 [i915]
[  164.687960]  [<c16fac60>] ? printk+0x16/0x1a
[  164.688023]  [<f83650a0>] ? intel_set_mode+0x20/0x25 [i915]
[  164.688134]  [<f8365b48>] ? intel_crtc_set_config+0x67c/0x976 [i915]
[  164.688157]  [<c16fac60>] ? printk+0x16/0x1a
[  164.688199]  [<f804c2e1>] ? drm_mode_set_config_internal+0x39/0x97 [drm]
[  164.688238]  [<f804f578>] ? drm_mode_setcrtc+0x373/0x405 [drm]
[  164.688278]  [<f804f205>] ? drm_mode_setplane+0x188/0x188 [drm]
[  164.688314]  [<f8045c7c>] ? drm_ioctl+0x233/0x35c [drm]
[  164.688351]  [<f804f205>] ? drm_mode_setplane+0x188/0x188 [drm]
[  164.688373]  [<c104e216>] ? pick_next_task_fair+0xd1/0x3ee
[  164.688385]  [<c1088d0b>] ? __audit_syscall_exit+0x1cd/0x1e3
[  164.688410]  [<f8045a49>] ? drm_copy_field+0x47/0x47 [drm]
[  164.688423]  [<c10ee7ed>] ? do_vfs_ioctl+0x3fa/0x444
[  164.688436]  [<c16ffc8a>] ? __schedule+0x56a/0x6d5
[  164.688449]  [<c10e21e0>] ? vfs_write+0x106/0x165
[  164.688461]  [<c10ee879>] ? SyS_ioctl+0x42/0x6d
[  164.688473]  [<c1088b20>] ? __audit_syscall_entry+0x9f/0xbd
[  164.688486]  [<c1702208>] ? sysenter_do_call+0x12/0x12
[  164.688495] ---[ end trace c7161e1fd715f86a ]---


==Reproduce steps==
---------------------------- 
1. ./kms_flip --run-subtest absolute-wf_vblank

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