<html>
    <head>
      <base href="https://bugs.freedesktop.org/" />
    </head>
    <body>
      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_NEEDINFO "
   title="NEEDINFO --- - [BDW Regression]igt/pm_rpm some subcases cause “WARNING: CPU: 0 PID: 4578 at drivers/gpu/drm/i915/intel_display.c:1294 hsw_disable_ips+0x2d/0x15a [i915]()”"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=83177#c8">Comment # 8</a>
              on <a class="bz_bug_link 
          bz_status_NEEDINFO "
   title="NEEDINFO --- - [BDW Regression]igt/pm_rpm some subcases cause “WARNING: CPU: 0 PID: 4578 at drivers/gpu/drm/i915/intel_display.c:1294 hsw_disable_ips+0x2d/0x15a [i915]()”"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=83177">bug 83177</a>
              from <span class="vcard"><a class="email" href="mailto:jinxianx.guo@intel.com" title="Guo Jinxian <jinxianx.guo@intel.com>"> <span class="fn">Guo Jinxian</span></a>
</span></b>
        <pre>Created <span class=""><a href="attachment.cgi?id=106476" name="attach_106476" title="dmesg">attachment 106476</a> <a href="attachment.cgi?id=106476&action=edit" title="dmesg">[details]</a></span>
dmesg

(In reply to <a href="show_bug.cgi?id=83177#c7">comment #7</a>)
<span class="quote">> Please re-run the test with i915.mmio_debug=1 module parameter as advised,
> and attach the dmesg.</span >

Update test result with "i915.mmio_debug=1".

root@x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./pm_rpm
--run-subtest cursor
IGT-Version: 1.8-g1244fc6 (x86_64) (Linux:
3.17.0-rc5_drm-intel-nightly_3e5e59_20140918+ x86_64)
Runtime PM support: 1
PC8 residency support: 1
Subtest cursor: SUCCESS (8.251s)
root@x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg -r|egrep
"<[1-4]>"|grep drm
<4>[  212.980848] WARNING: CPU: 0 PID: 4617 at
drivers/gpu/drm/i915/intel_uncore.c:47 gen8_write32+0x70/0x11a [i915]()
<4>[  212.980851] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev
pcspkr snd_hda_codec_hdmi i2c_i801 snd_hda_intel lpc_ich snd_hda_controller
mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore battery
parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  212.980868] CPU: 0 PID: 4617 Comm: pm_rpm Not tainted
3.17.0-rc5_drm-intel-nightly_3e5e59_20140918+ #2584
<4>[  212.980932]  [<ffffffffa0018f2e>] ? __setplane_internal+0x220/0x26f [drm]
<4>[  212.980939]  [<ffffffffa001911c>] ? drm_mode_cursor_common+0x19f/0x296
[drm]
<4>[  212.980947]  [<ffffffffa001bae4>] ? drm_mode_cursor_ioctl+0x31/0x36 [drm]
<4>[  212.980953]  [<ffffffffa001074c>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  212.980962]  [<ffffffffa001bab3>] ? drm_mode_setcrtc+0x48b/0x48b [drm]
<4>[  212.981010] WARNING: CPU: 0 PID: 4617 at
drivers/gpu/drm/i915/intel_uncore.c:528
hsw_unclaimed_reg_debug.isra.11+0x62/0x72 [i915]()
<4>[  212.981012] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev
pcspkr snd_hda_codec_hdmi i2c_i801 snd_hda_intel lpc_ich snd_hda_controller
mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore battery
parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  212.981026] CPU: 0 PID: 4617 Comm: pm_rpm Tainted: G        W     
3.17.0-rc5_drm-intel-nightly_3e5e59_20140918+ #2584
<4>[  212.981095]  [<ffffffffa0018f2e>] ? __setplane_internal+0x220/0x26f [drm]
<4>[  212.981103]  [<ffffffffa001911c>] ? drm_mode_cursor_common+0x19f/0x296
[drm]
<4>[  212.981111]  [<ffffffffa001bae4>] ? drm_mode_cursor_ioctl+0x31/0x36 [drm]
<4>[  212.981118]  [<ffffffffa001074c>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  212.981128]  [<ffffffffa001bab3>] ? drm_mode_setcrtc+0x48b/0x48b [drm]
<4>[  212.981177] WARNING: CPU: 0 PID: 4617 at
drivers/gpu/drm/i915/intel_uncore.c:528
hsw_unclaimed_reg_debug.isra.11+0x62/0x72 [i915]()
<4>[  212.981180] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev
pcspkr snd_hda_codec_hdmi i2c_i801 snd_hda_intel lpc_ich snd_hda_controller
mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore battery
parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  212.981195] CPU: 0 PID: 4617 Comm: pm_rpm Tainted: G        W     
3.17.0-rc5_drm-intel-nightly_3e5e59_20140918+ #2584
<4>[  212.981272]  [<ffffffffa0018f2e>] ? __setplane_internal+0x220/0x26f [drm]
<4>[  212.981280]  [<ffffffffa001911c>] ? drm_mode_cursor_common+0x19f/0x296
[drm]
<4>[  212.981288]  [<ffffffffa001bae4>] ? drm_mode_cursor_ioctl+0x31/0x36 [drm]
<4>[  212.981294]  [<ffffffffa001074c>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  212.981304]  [<ffffffffa001bab3>] ? drm_mode_setcrtc+0x48b/0x48b [drm]
<4>[  212.981355] WARNING: CPU: 0 PID: 4617 at
drivers/gpu/drm/i915/intel_uncore.c:47 gen8_write32+0x70/0x11a [i915]()
<4>[  212.981357] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev
pcspkr snd_hda_codec_hdmi i2c_i801 snd_hda_intel lpc_ich snd_hda_controller
mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore battery
parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  212.981372] CPU: 0 PID: 4617 Comm: pm_rpm Tainted: G        W     
3.17.0-rc5_drm-intel-nightly_3e5e59_20140918+ #2584
<4>[  212.981455]  [<ffffffffa0018d4f>] ? __setplane_internal+0x41/0x26f [drm]
<4>[  212.981474]  [<ffffffffa0023607>] ? drm_modeset_lock+0x52/0xb3 [drm]
<4>[  212.981488]  [<ffffffffa001911c>] ? drm_mode_cursor_common+0x19f/0x296
[drm]
<4>[  212.981501]  [<ffffffffa001bae4>] ? drm_mode_cursor_ioctl+0x31/0x36 [drm]
<4>[  212.981510]  [<ffffffffa001074c>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  212.981524]  [<ffffffffa001bab3>] ? drm_mode_setcrtc+0x48b/0x48b [drm]
<4>[  212.981587] WARNING: CPU: 0 PID: 4617 at
drivers/gpu/drm/i915/intel_uncore.c:528
hsw_unclaimed_reg_debug.isra.11+0x62/0x72 [i915]()
<4>[  212.981596] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev
pcspkr snd_hda_codec_hdmi i2c_i801 snd_hda_intel lpc_ich snd_hda_controller
mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore battery
parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  212.981655] CPU: 0 PID: 4617 Comm: pm_rpm Tainted: G        W     
3.17.0-rc5_drm-intel-nightly_3e5e59_20140918+ #2584
<4>[  212.981772]  [<ffffffffa0018d4f>] ? __setplane_internal+0x41/0x26f [drm]
<4>[  212.981799]  [<ffffffffa0023607>] ? drm_modeset_lock+0x52/0xb3 [drm]
<4>[  212.981811]  [<ffffffffa001911c>] ? drm_mode_cursor_common+0x19f/0x296
[drm]
<4>[  212.981821]  [<ffffffffa001bae4>] ? drm_mode_cursor_ioctl+0x31/0x36 [drm]
<4>[  212.981830]  [<ffffffffa001074c>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  212.981842]  [<ffffffffa001bab3>] ? drm_mode_setcrtc+0x48b/0x48b [drm]
<4>[  212.981903] WARNING: CPU: 0 PID: 4617 at
drivers/gpu/drm/i915/intel_uncore.c:528
hsw_unclaimed_reg_debug.isra.11+0x62/0x72 [i915]()
<4>[  212.981915] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev
pcspkr snd_hda_codec_hdmi i2c_i801 snd_hda_intel lpc_ich snd_hda_controller
mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore battery
parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  212.981950] CPU: 0 PID: 4617 Comm: pm_rpm Tainted: G        W     
3.17.0-rc5_drm-intel-nightly_3e5e59_20140918+ #2584
<4>[  212.982052]  [<ffffffffa0018d4f>] ? __setplane_internal+0x41/0x26f [drm]
<4>[  212.982064]  [<ffffffffa0023607>] ? drm_modeset_lock+0x52/0xb3 [drm]
<4>[  212.982073]  [<ffffffffa001911c>] ? drm_mode_cursor_common+0x19f/0x296
[drm]
<4>[  212.982083]  [<ffffffffa001bae4>] ? drm_mode_cursor_ioctl+0x31/0x36 [drm]
<4>[  212.982092]  [<ffffffffa001074c>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  212.982104]  [<ffffffffa001bab3>] ? drm_mode_setcrtc+0x48b/0x48b [drm]
<4>[  214.908623] WARNING: CPU: 0 PID: 4617 at
drivers/gpu/drm/i915/intel_uncore.c:47 gen8_write32+0x70/0x11a [i915]()
<4>[  214.908625] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev
pcspkr snd_hda_codec_hdmi i2c_i801 snd_hda_intel lpc_ich snd_hda_controller
mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore battery
parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  214.908641] CPU: 0 PID: 4617 Comm: pm_rpm Tainted: G        W     
3.17.0-rc5_drm-intel-nightly_3e5e59_20140918+ #2584
<4>[  214.908699]  [<ffffffffa0018f2e>] ? __setplane_internal+0x220/0x26f [drm]
<4>[  214.908706]  [<ffffffffa001911c>] ? drm_mode_cursor_common+0x19f/0x296
[drm]
<4>[  214.908713]  [<ffffffffa001bae4>] ? drm_mode_cursor_ioctl+0x31/0x36 [drm]
<4>[  214.908719]  [<ffffffffa001074c>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  214.908728]  [<ffffffffa001bab3>] ? drm_mode_setcrtc+0x48b/0x48b [drm]
<4>[  214.908772] WARNING: CPU: 0 PID: 4617 at
drivers/gpu/drm/i915/intel_uncore.c:528
hsw_unclaimed_reg_debug.isra.11+0x62/0x72 [i915]()
<4>[  214.908774] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev
pcspkr snd_hda_codec_hdmi i2c_i801 snd_hda_intel lpc_ich snd_hda_controller
mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore battery
parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  214.908788] CPU: 0 PID: 4617 Comm: pm_rpm Tainted: G        W     
3.17.0-rc5_drm-intel-nightly_3e5e59_20140918+ #2584
<4>[  214.908848]  [<ffffffffa0018f2e>] ? __setplane_internal+0x220/0x26f [drm]
<4>[  214.908854]  [<ffffffffa001911c>] ? drm_mode_cursor_common+0x19f/0x296
[drm]
<4>[  214.908860]  [<ffffffffa001bae4>] ? drm_mode_cursor_ioctl+0x31/0x36 [drm]
<4>[  214.908866]  [<ffffffffa001074c>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  214.908873]  [<ffffffffa001bab3>] ? drm_mode_setcrtc+0x48b/0x48b [drm]
<4>[  214.908914] WARNING: CPU: 0 PID: 4617 at
drivers/gpu/drm/i915/intel_uncore.c:528
hsw_unclaimed_reg_debug.isra.11+0x62/0x72 [i915]()
<4>[  214.908916] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev
pcspkr snd_hda_codec_hdmi i2c_i801 snd_hda_intel lpc_ich snd_hda_controller
mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore battery
parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  214.908930] CPU: 0 PID: 4617 Comm: pm_rpm Tainted: G        W     
3.17.0-rc5_drm-intel-nightly_3e5e59_20140918+ #2584
<4>[  214.908995]  [<ffffffffa0018f2e>] ? __setplane_internal+0x220/0x26f [drm]
<4>[  214.909003]  [<ffffffffa001911c>] ? drm_mode_cursor_common+0x19f/0x296
[drm]
<4>[  214.909011]  [<ffffffffa001bae4>] ? drm_mode_cursor_ioctl+0x31/0x36 [drm]
<4>[  214.909017]  [<ffffffffa001074c>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  214.909027]  [<ffffffffa001bab3>] ? drm_mode_setcrtc+0x48b/0x48b [drm]
<4>[  218.981226] WARNING: CPU: 0 PID: 4617 at
drivers/gpu/drm/i915/intel_uncore.c:47 gen8_write32+0x70/0x11a [i915]()
<4>[  218.981228] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev
pcspkr snd_hda_codec_hdmi i2c_i801 snd_hda_intel lpc_ich snd_hda_controller
mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore battery
parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  218.981244] CPU: 0 PID: 4617 Comm: pm_rpm Tainted: G        W     
3.17.0-rc5_drm-intel-nightly_3e5e59_20140918+ #2584
<4>[  218.981302]  [<ffffffffa0018d4f>] ? __setplane_internal+0x41/0x26f [drm]
<4>[  218.981310]  [<ffffffffa0023607>] ? drm_modeset_lock+0x52/0xb3 [drm]
<4>[  218.981316]  [<ffffffffa001911c>] ? drm_mode_cursor_common+0x19f/0x296
[drm]
<4>[  218.981324]  [<ffffffffa001bae4>] ? drm_mode_cursor_ioctl+0x31/0x36 [drm]
<4>[  218.981329]  [<ffffffffa001074c>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  218.981338]  [<ffffffffa001bab3>] ? drm_mode_setcrtc+0x48b/0x48b [drm]
<4>[  218.981382] WARNING: CPU: 0 PID: 4617 at
drivers/gpu/drm/i915/intel_uncore.c:528
hsw_unclaimed_reg_debug.isra.11+0x62/0x72 [i915]()
<4>[  218.981385] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev
pcspkr snd_hda_codec_hdmi i2c_i801 snd_hda_intel lpc_ich snd_hda_controller
mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore battery
parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  218.981400] CPU: 0 PID: 4617 Comm: pm_rpm Tainted: G        W     
3.17.0-rc5_drm-intel-nightly_3e5e59_20140918+ #2584
<4>[  218.981477]  [<ffffffffa0018d4f>] ? __setplane_internal+0x41/0x26f [drm]
<4>[  218.981485]  [<ffffffffa0023607>] ? drm_modeset_lock+0x52/0xb3 [drm]
<4>[  218.981493]  [<ffffffffa001911c>] ? drm_mode_cursor_common+0x19f/0x296
[drm]
<4>[  218.981501]  [<ffffffffa001bae4>] ? drm_mode_cursor_ioctl+0x31/0x36 [drm]
<4>[  218.981507]  [<ffffffffa001074c>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  218.981517]  [<ffffffffa001bab3>] ? drm_mode_setcrtc+0x48b/0x48b [drm]
<4>[  218.981565] WARNING: CPU: 0 PID: 4617 at
drivers/gpu/drm/i915/intel_uncore.c:528
hsw_unclaimed_reg_debug.isra.11+0x62/0x72 [i915]()
<4>[  218.981567] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev
pcspkr snd_hda_codec_hdmi i2c_i801 snd_hda_intel lpc_ich snd_hda_controller
mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore battery
parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  218.981582] CPU: 0 PID: 4617 Comm: pm_rpm Tainted: G        W     
3.17.0-rc5_drm-intel-nightly_3e5e59_20140918+ #2584
<4>[  218.981658]  [<ffffffffa0018d4f>] ? __setplane_internal+0x41/0x26f [drm]
<4>[  218.981666]  [<ffffffffa0023607>] ? drm_modeset_lock+0x52/0xb3 [drm]
<4>[  218.981674]  [<ffffffffa001911c>] ? drm_mode_cursor_common+0x19f/0x296
[drm]
<4>[  218.981682]  [<ffffffffa001bae4>] ? drm_mode_cursor_ioctl+0x31/0x36 [drm]
<4>[  218.981688]  [<ffffffffa001074c>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  218.981698]  [<ffffffffa001bab3>] ? drm_mode_setcrtc+0x48b/0x48b [drm]</pre>
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