[Bug 80081] [HSW Bisected]igt/pm_rpm/system-suspend cause " WARNING: CPU: 7 PID: 786 at drivers/gpu/drm/i915/i915_gem.c:1644 i915_gem_release_all_mmaps+0x28/0x7e [i915]()

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80081

--- Comment #6 from Guo Jinxian <jinxianx.guo at intel.com> ---
(In reply to comment #5)
> (In reply to comment #4)
> > The below commit claims to fix this, please retest:
> > 
> > commit 6254b2042c794a8c2e14dc49b575a0708c823f88
> > Author: Chris Wilson <chris at chris-wilson.co.uk>
> > Date:   Mon Jun 16 08:57:44 2014 +0100
> > 
> >     drm/i915: Simplify i915_gem_release_all_mmaps()
> 
> This bug unable to reproduce on latest -next-queued
> 9c33baa6b3bbb01c1a88dceba986b20e6642cf31
> 
> But I found another CallTrace below, I will report new bug for it.
> [   64.318836] WARNING: CPU: 0 PID: 786 at
> drivers/gpu/drm/i915/i915_irq.c:209 gen6_enable_rps_interrupts+0x39/0x5c
> [i915]()
> [   64.318844] Modules linked in: dm_mod snd_hda_codec_realtek iTCO_wdt
> snd_hda_codec_generic iTCO_vendor_support snd_hda_codec_hdmi serio_raw
> pcspkr i2c_i801 lpc_ich mfd_core snd_hda_intel snd_hda_controller
> snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore battery wmi
> tpm_infineon tpm_tis tpm acpi_cpufreq i915 video button drm_kms_helper drm
> [   64.318845] CPU: 0 PID: 786 Comm: kworker/0:1 Not tainted
> 3.15.0-rc8_kcloud_9c33ba_20140625+ #2
> [   64.318846] Hardware name: ASUS All Series/Z87-EXPERT, BIOS 1008
> 05/17/2013
> [   64.318851] Workqueue: events intel_gen6_powersave_work [i915]
> [   64.318853]  0000000000000000 ffffffff8170a8d4 0000000000000000
> ffffffff81033f78
> [   64.318854]  ffffffffa0068408 ffff880251380000 ffff880251ac4000
> 0000000000040000
> [   64.318854]  ffff880251388238 ffffffffa0068408 ffff880251380000
> ffffffffa006e97c
> [   64.318855] Call Trace:
> [   64.318859]  [<ffffffff8170a8d4>] ? dump_stack+0x41/0x51
> [   64.318861]  [<ffffffff81033f78>] ? warn_slowpath_common+0x6f/0x84
> [   64.318867]  [<ffffffffa0068408>] ? gen6_enable_rps_interrupts+0x39/0x5c
> [i915]
> [   64.318872]  [<ffffffffa0068408>] ? gen6_enable_rps_interrupts+0x39/0x5c
> [i915]
> [   64.318877]  [<ffffffffa006e97c>] ? intel_gen6_powersave_work+0xe04/0xefe
> [i915]
> [   64.318880]  [<ffffffff81044d0c>] ? process_one_work+0x1c1/0x2ca
> [   64.318881]  [<ffffffff8104584d>] ? worker_thread+0x1c9/0x2ad
> [   64.318882]  [<ffffffff81045684>] ? rescuer_thread+0x267/0x267
> [   64.318883]  [<ffffffff81049dc2>] ? kthread+0xca/0xd2
> [   64.318884]  [<ffffffff81049cf8>] ? kthread_create_on_node+0x15d/0x15d
> [   64.318887]  [<ffffffff81714dbc>] ? ret_from_fork+0x7c/0xb0
> [   64.318888]  [<ffffffff81049cf8>] ? kthread_create_on_node+0x15d/0x15d

This Calltrace was tracked by bug 80517. Close this one.

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