[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 #7 from Guo Jinxian <jinxianx.guo at intel.com> ---
Created attachment 103317
  --> https://bugs.freedesktop.org/attachment.cgi?id=103317&action=edit
dmesg

This bug still able to reproduce on latest
-fixes(a0d036b074b4a5a933e37fcb9bdd6b3cc80a0387)

[  298.347965] WARNING: CPU: 0 PID: 674 at drivers/gpu/drm/i915/i915_gem.c:1628
i915_gem_release_all_mmaps+0x28/0x7e [i915]()
[  298.347966] Modules linked in: dm_mod snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support ppdev
pcspkr serio_raw i2c_i801 snd_hda_intel snd_hda_controller snd_hda_codec
snd_hwdep snd_pcm firewire_ohci lpc_ich firewire_core crc_itu_t mfd_core
snd_timer snd soundcore parport_pc parport tpm_tis tpm acpi_cpufreq i915 button
video drm_kms_helper drm
[  298.347984] CPU: 0 PID: 674 Comm: kworker/0:1 Not tainted
3.16.0-rc6_drm-intel-fixes_a0d036_20140723+ #748
[  298.347986] Hardware name:                  /DQ67SW, BIOS
SWQ6710H.86A.0060.2011.1220.1805 12/20/2011
[  298.347991] Workqueue: pm pm_runtime_work
[  298.347992]  0000000000000000 0000000000000009 ffffffff81780c0d
0000000000000000
[  298.347995]  ffffffff8103986c ffff880232bcbc90 ffffffffa007fe27
ffff880232bcbce8
[  298.347997]  ffff880002810000 ffff8802342ce898 ffff880002817980
ffff8802347fa860
[  298.348000] Call Trace:
[  298.348004]  [<ffffffff81780c0d>] ? dump_stack+0x41/0x51
[  298.348008]  [<ffffffff8103986c>] ? warn_slowpath_common+0x78/0x90
[  298.348016]  [<ffffffffa007fe27>] ? i915_gem_release_all_mmaps+0x28/0x7e
[i915]
[  298.348024]  [<ffffffffa007fe27>] ? i915_gem_release_all_mmaps+0x28/0x7e
[i915]
[  298.348029]  [<ffffffffa0066433>] ? intel_runtime_suspend+0xe1/0x812 [i915]
[  298.348033]  [<ffffffff81350d0f>] ? pci_pm_runtime_suspend+0x60/0x119
[  298.348035]  [<ffffffff813decbc>] ? __rpm_callback+0x28/0x4c
[  298.348038]  [<ffffffff813ded2b>] ? rpm_callback+0x4b/0x69
[  298.348040]  [<ffffffff813df290>] ? rpm_suspend+0x262/0x417
[  298.348047]  [<ffffffffa007178f>] ? intel_gen6_powersave_work+0xb5e/0xb6d
[i915]
[  298.348050]  [<ffffffff813e0047>] ? pm_runtime_work+0x65/0x7b
[  298.348052]  [<ffffffff8104d636>] ? process_one_work+0x1e2/0x363
[  298.348054]  [<ffffffff8104de16>] ? worker_thread+0x2f2/0x3f1
[  298.348056]  [<ffffffff8104db24>] ? pool_mayday_timeout+0xf2/0xf2
[  298.348059]  [<ffffffff8105258e>] ? kthread+0xc5/0xcd
[  298.348062]  [<ffffffff810524c9>] ? kthread_freezable_should_stop+0x40/0x40
[  298.348064]  [<ffffffff817866ac>] ? ret_from_fork+0x7c/0xb0
[  298.348067]  [<ffffffff810524c9>] ? kthread_freezable_should_stop+0x40/0x40

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