[Bug 89188] New: intel_audio WARN_ON with Linux v3.19-7478-g796e1c55717e

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89188

            Bug ID: 89188
           Summary: intel_audio WARN_ON with Linux
                    v3.19-7478-g796e1c55717e
           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: jwboyer at fedoraproject.org
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

This morning I booted Linus' latest tree which is after the DRM merge.  I have
a MacBookPro 10,2 that produces the following backtrace:

[    1.970292] ------------[ cut here ]------------
[    1.970319] WARNING: CPU: 0 PID: 107 at
drivers/gpu/drm/i915/intel_audio.c:294 ilk_audio_codec_disable+0x170/0x1b0
[i915]()
[    1.970321] WARN_ON(!port)
[    1.970327] Modules linked in: i915 i2c_algo_bit drm_kms_helper drm video
[    1.970330] CPU: 0 PID: 107 Comm: kworker/u16:6 Not tainted
3.20.0-0.rc0.git7.1.fc23.x86_64 #1
[    1.970332] Hardware name: Apple Inc. MacBookPro10,2/Mac-AFD8A9D944EA4843,
BIOS MBP102.88Z.0106.B03.1211161133 11/16/2012
[    1.970336] Workqueue: events_unbound async_run_entry_fn
[    1.970340]  0000000000000000 0000000002cedd04 ffff880087ac7538
ffffffff81876738
[    1.970343]  0000000000000000 ffff880087ac7590 ffff880087ac7578
ffffffff810ab5da
[    1.970355]  ffff880260750000 ffff880260750000 00000000fffffeee
0000000030000000
[    1.970356] Call Trace:
[    1.970359]  [<ffffffff81876738>] dump_stack+0x4c/0x65
[    1.970363]  [<ffffffff810ab5da>] warn_slowpath_common+0x8a/0xc0
[    1.970365]  [<ffffffff810ab665>] warn_slowpath_fmt+0x55/0x70
[    1.970387]  [<ffffffffa0102d60>] ilk_audio_codec_disable+0x170/0x1b0 [i915]
[    1.970408]  [<ffffffffa010376e>] intel_audio_codec_disable+0x1e/0x30 [i915]
[    1.970430]  [<ffffffffa013f99d>] intel_disable_dp+0x9d/0xe0 [i915]
[    1.970462]  [<ffffffffa011720a>] ironlake_crtc_disable+0x16a/0x800 [i915]
[    1.970484]  [<ffffffffa01187e4>] __intel_set_mode+0x984/0xb50 [i915]
[    1.970506]  [<ffffffffa011fb8b>] intel_crtc_set_config+0xc4b/0x1030 [i915]
[    1.970521]  [<ffffffffa002ed17>] ? drm_atomic_state_free+0x27/0x60 [drm]
[    1.970532]  [<ffffffffa001e9e9>] drm_mode_set_config_internal+0x69/0x120
[drm]
[    1.970538]  [<ffffffffa00867d8>] restore_fbdev_mode+0xc8/0xf0
[drm_kms_helper]
[    1.970544]  [<ffffffffa0088849>]
drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x80 [drm_kms_helper]
[    1.970548]  [<ffffffffa00888c2>] drm_fb_helper_set_par+0x22/0x50
[drm_kms_helper]
[    1.970573]  [<ffffffffa012f25a>] intel_fbdev_set_par+0x1a/0x60 [i915]
[    1.970604]  [<ffffffff8149e518>] fbcon_init+0x588/0x610
[    1.970608]  [<ffffffff8153965c>] visual_init+0xbc/0x120
[    1.970610]  [<ffffffff8153c03e>] do_bind_con_driver+0x17e/0x3c0
[    1.970613]  [<ffffffff8153c7e4>] do_take_over_console+0xb4/0x1b0
[    1.970616]  [<ffffffff81499313>] do_fbcon_takeover+0x63/0xd0
[    1.970619]  [<ffffffff8149f06d>] fbcon_event_notify+0x6dd/0x7e0
[    1.970624]  [<ffffffff810d50f2>] notifier_call_chain+0x62/0x100
[    1.970627]  [<ffffffff810d53a1>] __blocking_notifier_call_chain+0x51/0x70
[    1.970630]  [<ffffffff810d53d6>] blocking_notifier_call_chain+0x16/0x20
[    1.970633]  [<ffffffff814a510b>] fb_notifier_call_chain+0x1b/0x20
[    1.970635]  [<ffffffff814a75c2>] register_framebuffer+0x222/0x370
[    1.970641]  [<ffffffffa0088b54>] drm_fb_helper_initial_config+0x264/0x3c0
[drm_kms_helper]
[    1.970665]  [<ffffffffa013058b>] intel_fbdev_initial_config+0x1b/0x20
[i915]
[    1.970667]  [<ffffffff810d79da>] async_run_entry_fn+0x4a/0x150
[    1.970669]  [<ffffffff810ccc25>] process_one_work+0x215/0x860
[    1.970672]  [<ffffffff810ccb8e>] ? process_one_work+0x17e/0x860
[    1.970674]  [<ffffffff810cd36b>] ? worker_thread+0xfb/0x490
[    1.970676]  [<ffffffff810cd2db>] worker_thread+0x6b/0x490
[    1.970679]  [<ffffffff810cd270>] ? process_one_work+0x860/0x860
[    1.970681]  [<ffffffff810d378f>] kthread+0x11f/0x140
[    1.970684]  [<ffffffff810e9a05>] ? local_clock+0x25/0x30
[    1.970688]  [<ffffffff810d3670>] ? kthread_create_on_node+0x250/0x250
[    1.970691]  [<ffffffff8188077c>] ret_from_fork+0x7c/0xb0
[    1.970693]  [<ffffffff810d3670>] ? kthread_create_on_node+0x250/0x250
[    1.970695] ---[ end trace d0ffc484dcd1cb40 ]---

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