Message-ID: <1513341899.6882.101.camel@intel.com>
Subject: Re: Warning in i915/intel_audio.c
From: Mika Kahola <mika.kahola@intel.com>
Reply-To: mika.kahola@intel.com
To: jaswinder@perfectintelligent.com, linux-kernel@vger.kernel.org,
        ville.syrjala@linux.intel.com, ramalingam.c@intel.com,
        jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com,
        rodrigo.vivi@intel.com, intel-gfx@lists.freedesktop.org
Date: Fri, 15 Dec 2017 14:44:59 +0200
In-Reply-To: <c857309b-67ff-ac0d-4b2d-76039136d558@perfectintelligent.com>
References: <c857309b-67ff-ac0d-4b2d-76039136d558@perfectintelligent.com>
Organization: Intel OTC
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Sender: linux-kernel-owner@vger.kernel.org
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Hi,

This is a known issue. Could you try out this patch to see if that
would fix this issue for you?

https://patchwork.freedesktop.org/series/35389/

On Fri, 2017-12-15 at 17:08 +0530, Jaswinder Singh Rajput wrote:
> Hello friends,
> 
> I am getting multiple warnings in i915/intel_audio.c . I am
> attaching 
> dmesg, config and lsmod for your reference.
> 
> 
> [    0.390606] WARN_ON(pipe >= intel_info((dev_priv))->num_pipes)
> [    0.390619] WARNING: CPU: 1 PID: 1051 at 
> drivers/gpu/drm/i915/intel_audio.c:757 get_saved_enc+0x74/0x80
> [    0.390620] Modules linked in:
> [    0.390621] CPU: 1 PID: 1051 Comm: kworker/1:2 Not tainted 
> 4.15.0-rc3+ #13
> [    0.390622] Hardware name: Gigabyte Technology Co., Ltd. 
> H81M-S/H81M-S, BIOS F2 08/19/2015
> [    0.390624] Workqueue: events azx_probe_work
> [    0.390625] RIP: 0010:get_saved_enc+0x74/0x80
> [    0.390626] RSP: 0018:ffff9b650061fba8 EFLAGS: 00010292
> [    0.390627] RAX: 0000000000000032 RBX: ffff888e17384cb8 RCX: 
> 0000000000000000
> [    0.390627] RDX: 0000000000000001 RSI: 0000000000000002 RDI: 
> ffffffff97032bb0
> [    0.390627] RBP: ffff888e17380000 R08: 0000000000000032 R09: 
> 0000000000000032
> [    0.390628] R10: ffff888e19cc3840 R11: 00000000000344e0 R12: 
> 0000000000000100
> [    0.390628] R13: 0000000000000001 R14: ffff888e168fba08 R15: 
> ffff888e168fba10
> [    0.390629] FS:  0000000000000000(0000) GS:ffff888e1f300000(0000) 
> knlGS:0000000000000000
> [    0.390629] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [    0.390630] CR2: 00007f7dd01c6914 CR3: 000000003da0a001 CR4: 
> 00000000000606e0
> [    0.390630] Call Trace:
> [    0.390633]  i915_audio_component_get_eld+0x43/0xe0
> [    0.390635]  hdmi_present_sense+0x95/0x330
> [    0.390636]  generic_hdmi_build_controls+0x143/0x1e0
> [    0.390638]  snd_hda_codec_build_controls+0x178/0x1c0
> [    0.390639]  ? snd_hda_codec_build_pcms+0x14f/0x1a0
> [    0.390641]  hda_codec_driver_probe+0x76/0x100
> [    0.390644]  driver_probe_device+0x27d/0x310
> [    0.390645]  ? __driver_attach+0xa0/0xa0
> [    0.390646]  bus_for_each_drv+0x50/0x80
> [    0.390647]  __device_attach+0xb0/0x110
> [    0.390649]  bus_probe_device+0x82/0x90
> [    0.390650]  device_add+0x2dc/0x570
> [    0.390652]  snd_hdac_device_register+0xd/0x40
> [    0.390654]  snd_hda_codec_configure+0x32/0x120
> [    0.390655]  azx_codec_configure+0x2a/0x60
> [    0.390656]  azx_probe_work+0x40c/0x860
> [    0.390659]  process_one_work+0x1d2/0x3c0
> [    0.390660]  worker_thread+0x42/0x3e0
> [    0.390661]  kthread+0xf0/0x130
> [    0.390663]  ? trace_event_raw_event_workqueue_work+0x80/0x80
> [    0.390664]  ? kthread_create_worker_on_cpu+0x40/0x40
> [    0.390665]  ? call_usermodehelper_exec_async+0x11c/0x120
> [    0.390667]  ret_from_fork+0x1f/0x30
> [    0.390668] Code: 83 c2 01 39 d1 7f e0 31 c0 c3 83 78 70 0b 74 f9
> 31 
> c0 85 d2 74 cb eb f1 48 c7 c6 d0 c0 df 96 48 c7 c7 57 dd db 96 e8 9c
> 2d 
> bf ff <0f> ff 31 c0 c3 0f 1f 80 00 00 00 00 41 57 4d 89 c7 41 56 49
> 89
> [    0.390679] ---[ end trace 9a14f34c58dc94ff ]---
> 
> 
> Thanks,
> --
> Jaswinder Singh Rajput
> 
-- 
Mika Kahola - Intel OTC