[Bug 80517] [HSW Regression]igt/pm_rpm/system-suspend cause " WARNING: CPU: 0 PID: 786 at drivers/gpu/drm/i915/i915_irq.c:209 gen6_enable_rps_interrupts+0x39/0x5c [i915]()"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80517

--- Comment #4 from Guo Jinxian <jinxianx.guo at intel.com> ---
Created attachment 102000
  --> https://bugs.freedesktop.org/attachment.cgi?id=102000&action=edit
dmesg

This bug still able to reproduce on latest
-nightly(1087d4bf01e79523898c6c31615bf0c369e0039a)

[   86.565858] WARNING: CPU: 0 PID: 1198 at drivers/gpu/drm/i915/i915_irq.c:209
gen6_enable_rps_interrupts+0x39/0x5c [i915]()
[   86.565868] Modules linked in: ip6table_filter ip6_tables ebtable_nat
ebtables nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT
iptable_mangle xt_tcpudp iptable_filter ip_tables x_tables bridge stp llc ipv6
dm_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt
iTCO_vendor_support dcdbas serio_raw i2c_i801 pcspkr snd_hda_intel
snd_hda_controller lpc_ich snd_hda_codec mfd_core snd_hwdep shpchp snd_pcm
snd_timer snd soundcore battery acpi_cpufreq i915 video button drm_kms_helper
drm
[   86.565870] CPU: 0 PID: 1198 Comm: kworker/0:2 Not tainted
3.16.0-rc2_drm-intel-nightly_1087d4_20140630+ #64
[   86.565871] Hardware name: Dell Inc. OptiPlex 9020/0DNKMN, BIOS A03
09/17/2013
[   86.565876] Workqueue: events intel_gen6_powersave_work [i915]
[   86.565878]  0000000000000000 0000000000000009 ffffffff8177f9bf
0000000000000000
[   86.565878]  ffffffff8103983c 0000000000000004 ffffffffa006898d
ffff880002e40000
[   86.565879]  ffff880002e40000 ffff880114b8c800 0000000000040000
ffff880002e48298
[   86.565880] Call Trace:
[   86.565883]  [<ffffffff8177f9bf>] ? dump_stack+0x41/0x51
[   86.565886]  [<ffffffff8103983c>] ? warn_slowpath_common+0x78/0x90
[   86.565890]  [<ffffffffa006898d>] ? gen6_enable_rps_interrupts+0x39/0x5c
[i915]
[   86.565894]  [<ffffffffa006898d>] ? gen6_enable_rps_interrupts+0x39/0x5c
[i915]
[   86.565899]  [<ffffffffa0070c38>] ? intel_gen6_powersave_work+0xe25/0xf1e
[i915]
[   86.565900]  [<ffffffff8104d5f6>] ? process_one_work+0x1e2/0x363
[   86.565902]  [<ffffffff8104ddd6>] ? worker_thread+0x2f2/0x3f1
[   86.565903]  [<ffffffff8104dae4>] ? pool_mayday_timeout+0xf2/0xf2
[   86.565905]  [<ffffffff8105254a>] ? kthread+0xc5/0xcd
[   86.565906]  [<ffffffff81052485>] ? kthread_freezable_should_stop+0x40/0x40
[   86.565907]  [<ffffffff817854ac>] ? ret_from_fork+0x7c/0xb0
[   86.565909]  [<ffffffff81052485>] ? kthread_freezable_should_stop+0x40/0x40

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