[Bug 91221] [g45] intel_check_page_flip warning in dmesg

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=91221

--- Comment #20 from Yuh-Jye Chang <yuhjyechang at gmail.com> ---
[   76.343709] ------------[ cut here ]------------
[   76.344151] WARNING: CPU: 0 PID: 834 at
drivers/gpu/drm/i915/intel_display.c:11364 intel_check_page_flip+0xb6/0xf9
[i915]()
[   76.344329] Kicking stuck page flip: queued at 3744, now 3748
[   76.344344] Modules linked in: rfcomm xt_CHECKSUM iptable_mangle
ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat
nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT
nf_reject_ipv4 xt_tcpudp ebtable_filter ebtables ip6table_filter ip6_tables
iptable_filter ip_tables x_tables bnep bridge stp llc arc4 iwlmvm
snd_hda_codec_hdmi mac80211 snd_hda_codec_realtek snd_hda_codec_generic
snd_hda_intel iwlwifi snd_hda_codec snd_hda_core snd_hwdep snd_pcm intel_rapl
iosf_mbi cfg80211 x86_pkg_temp_thermal intel_powerclamp snd_seq_midi
snd_seq_midi_event coretemp snd_rawmidi crct10dif_pclmul joydev crc32_pclmul
snd_seq input_leds aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper
cryptd snd_seq_device snd_timer snd btusb mei_me btrtl ir_lirc_codec mei
lirc_dev ir_mce_kbd_decoder
[   76.347220]  ir_xmp_decoder ir_sharp_decoder ir_sanyo_decoder shpchp
ir_sony_decoder soundcore ir_jvc_decoder ir_rc6_decoder ir_rc5_decoder
ir_nec_decoder hci_uart btbcm btintel bluetooth rc_rc6_mce nuvoton_cir battery
rc_core intel_lpss_acpi intel_lpss acpi_als kfifo_buf industrialio mac_hid
acpi_cpufreq kvm_intel sunrpc parport_pc ppdev lp parport autofs4 kvm
hid_logitech_hidpp i915 hid_logitech_dj i2c_algo_bit drm_kms_helper e1000e
syscopyarea sysfillrect sysimgblt sdhci_pci fb_sys_fops ptp ahci usbhid libahci
pps_core sdhci i2c_hid drm wmi hid
[   76.349412] CPU: 0 PID: 834 Comm: vgt_main Tainted: G     U  W      
4.3.0-rc6-vgt+ #1
[   76.349743] Hardware name:                  /NUC6i7KYB, BIOS
KYSKLi70.86A.0034.2016.0503.1003 05/03/2016
[   76.349748]  0000000000000000 ffff8804bec03e20 ffffffff812a4b61
ffff8804bec03e68
[   76.349987]  ffff8804bec03e58 ffffffff81059725 ffffffffa01f65d6
ffff8804ac3a6000
[   76.350225]  ffff880499bc9d80 ffff8804ab845000 0000000000000000
ffff8804bec03ec0
[   76.350501] Call Trace:
[   76.350510]  <IRQ>  [<ffffffff812a4b61>] dump_stack+0x44/0x55
[   76.350880]  [<ffffffff81059725>] warn_slowpath_common+0x99/0xb2
[   76.351143]  [<ffffffffa01f65d6>] ? intel_check_page_flip+0xb6/0xf9 [i915]
[   76.351326]  [<ffffffff81059786>] warn_slowpath_fmt+0x48/0x50
[   76.351620]  [<ffffffffa01e5925>] ? __intel_pageflip_stall_check+0xbe/0xef
[i915]
[   76.351883]  [<ffffffffa01f65d6>] intel_check_page_flip+0xb6/0xf9 [i915]
[   76.352112]  [<ffffffffa0197d09>] gen8_irq_handler+0x2dd/0x562 [i915]
[   76.352345]  [<ffffffffa0193c22>] i915_isr_wrapper+0x36/0x3d [i915]
[   76.352524]  [<ffffffff811063f8>] irq_work_run_list+0x48/0x66
[   76.352692]  [<ffffffff8110642e>] irq_work_run+0x18/0x2e
[   76.352886]  [<ffffffff810135e0>] smp_irq_work_interrupt+0x1f/0x26
[   76.353073]  [<ffffffff815e4182>] irq_work_interrupt+0x82/0x90
[   76.353084]  <EOI>  [<ffffffff8103ae49>] ? lapic_timer_set_oneshot+0x2b/0x2b
[   76.353494]  [<ffffffff8101369d>] ? arch_irq_work_raise+0x34/0x36
[   76.353669]  [<ffffffff81106579>] irq_work_queue+0x42/0x64
[   76.353917]  [<ffffffffa0195e80>] vgt_schedule_host_isr+0x19/0x1b [i915]
[   76.354146]  [<ffffffffa024e41c>] vgt_host_irq+0x21/0x23 [i915]
[   76.354445]  [<ffffffffa0235aad>] inject_dom0_virtual_interrupt+0x14c/0x151
[i915]
[   76.354666]  [<ffffffffa02270d7>] vgt_exit+0x1f/0x21 [i915]
[   76.354897]  [<ffffffffa0228822>] vgt_thread+0x41f/0x694 [i915]
[   76.355079]  [<ffffffff81086c9c>] ? wake_up_atomic_t+0x2c/0x2c
[   76.355341]  [<ffffffffa0228403>] ? vgt_reset_device+0x59c/0x59c [i915]
[   76.355485]  [<ffffffff81070d6d>] kthread+0xa5/0xad
[   76.355661]  [<ffffffff81070cc8>] ? kthread_parkme+0x24/0x24
[   76.355822]  [<ffffffff815e2b4f>] ret_from_fork+0x3f/0x70
[   76.356005]  [<ffffffff81070cc8>] ? kthread_parkme+0x24/0x24
[   76.356134] ---[ end trace 9cc7532e7a98fbeb ]---

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