[Bug 84893] New: [BDW Bisected]igt/kms_rotation_crc/sprite-rotation causes "WARNING: CPU: 0 PID: 18663 at drivers/gpu/drm/i915/intel_display.c:1238 assert_plane.constprop.50+0x5f/0x62 [i915]()"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84893

            Bug ID: 84893
           Summary: [BDW Bisected]igt/kms_rotation_crc/sprite-rotation
                    causes "WARNING: CPU: 0 PID: 18663 at
                    drivers/gpu/drm/i915/intel_display.c:1238
                    assert_plane.constprop.50+0x5f/0x62 [i915]()"
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: high
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: jinxianx.guo at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

==System Environment==
--------------------------
Regression: Yes. 

Non-working platforms: BDW

==kernel==
--------------------------
origin/drm-intel-nightly: ea4bec8e96ea8b33b49a7892c1c7f20041a56da6(fails)
    drm-intel-nightly: 2014y-10m-09d-07h-58m-45s UTC integration manifest


==Bug detailed description==
igt/kms_rotation_crc/sprite-rotation causes "WARNING: CPU: 0 PID: 18663 at
drivers/gpu/drm/i915/intel_display.c:1238 assert_plane.constprop.50+0x5f/0x62
[i915]()"

Dmesg:
[ 899.710469] WARNING: CPU: 0 PID: 18663 at
drivers/gpu/drm/i915/intel_display.c:1238 assert_plane.constprop.50+0x5f/0x62
[i915]()
[ 899.850921] plane A assertion failure (expected on, current off)
[ 899.923845] Modules linked in: ip6table_filter ip6_tables iptable_filter
ip_tables ebtable_nat ebtables x_tables ipv6 dm_mod iTCO_wdt
iTCO_vendor_support ppdev snd_hda_codec_hdmi snd_hda_intel snd_hda_controller
pcspkr snd_hda_codec snd_hwdep snd_pcm snd_timer i2c_i801 lpc_ich snd mfd_core
soundcore battery parport_pc parport ac acpi_cpufreq i915 button video
drm_kms_helper drm
[ 900.334222] CPU: 0 PID: 18663 Comm: kms_rotation_cr Not tainted
3.17.0_prts_ff1ea7_20141009_debug+ #70
[ 900.447236] 0000000000000000 ffff880003023a68 ffffffff8181355c
ffff880003023ab0
[ 900.537487] ffff880003023aa0 ffffffff8103e87f ffffffffa00cd779
0000000000000000
[ 900.627753] ffff88014923b000 ffff88014902f000 0000000000000000
ffff880003023b00
[ 900.718014] Call Trace:
[ 900.747684] [] dump_stack+0x45/0x56
[ 900.810057] [] warn_slowpath_common+0x7f/0x98
[ 900.883011] [] ? assert_plane.constprop.50+0x5f/0x62 [i915]
[ 900.970704] [] warn_slowpath_fmt+0x4c/0x4e
[ 901.040499] [] assert_plane.constprop.50+0x5f/0x62 [i915]
[ 901.126107] [] hsw_disable_ips+0x35/0x15c [i915]
[ 901.202224] [] intel_crtc_disable_planes+0x49/0xe9 [i915]
[ 901.287832] [] haswell_crtc_disable+0x38/0x283 [i915]
[ 901.369224] [] __intel_set_mode+0x791/0x1230 [i915]
[ 901.448503] [] intel_set_mode+0x14/0x2a [i915]
[ 901.522512] [] intel_crtc_set_config+0x9b6/0xa9f [i915]
[ 901.606000] [] ? drm_modeset_lock+0x8f/0xb1 [drm]
[ 901.683161] [] drm_mode_set_config_internal+0x55/0xe0 [drm]
[ 901.770879] [] drm_framebuffer_remove+0x8e/0x106 [drm]
[ 901.853319] [] drm_mode_rmfb+0xcf/0xfa [drm]
[ 901.925198] [] drm_ioctl+0x385/0x404 [drm]
[ 901.994974] [] ? drm_mode_addfb2+0x32/0x32 [drm]
[ 902.071061] [] ? mntput_no_expire+0x5/0x1af
[ 902.141878] [] ? mntput_no_expire+0x5a/0x1af
[ 902.213744] [] ? mntput_no_expire+0x5/0x1af
[ 902.284558] [] do_vfs_ioctl+0x3a3/0x46c
[ 902.351151] [] ? current_kernel_time+0x61/0x9a
[ 902.425131] [] ? trace_hardirqs_on_caller+0x16e/0x18a
[ 902.506493] [] SyS_ioctl+0x50/0x7d
[ 902.567812] [] system_call_fastpath+0x16/0x1b
[ 902.640733] ---[ end trace a7cf4328bfdc1cbf ]---", 


==Reproduce steps==
---------------------------- 
1. ./kms_rotation_crc --run-subtest sprite-rotation

==Bisect results from PRTS==
----------------------------
Bisect shows: 1180e20606fd7c5d76dc5b2a1594fa51ba5a0f31 is the first bad commit

commit 1180e20606fd7c5d76dc5b2a1594fa51ba5a0f31
Author:     Paulo Zanoni <paulo.r.zanoni at intel.com>
AuthorDate: Tue Oct 7 18:02:52 2014 -0300
Commit:     Jani Nikula <jani.nikula at intel.com>
CommitDate: Wed Oct 8 16:47:54 2014 +0300

    drm/i915: properly reenable gen8 pipe IRQs

    We were missing the pipe B/C vblank bits! Take a look at
    gen8_de_irq_postinstall for a comparison.

    This should fix a bunch of IGT tests.

    There are a few more things we could improve on this code, but this
    should be the minimal fix to unblock us.

    v2: s/extra_iir/extra_ier/ because IIR doesn't make sense (Ville)

    Bugzilla:https://bugs.freedesktop.org/show_bug.cgi?id=83640
    Testcase: igt/*
    Cc: stable at vger.kernel.org
    Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
    Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
    Signed-off-by: Jani Nikula <jani.nikula at intel.com>

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