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[Serhiy Zahoriya <1505242@xxxxxxxxxxxxxxxxxx>]

Linux x502 4.3.0-040300-generic #201511020949 SMP Mon Nov 2 14:50:44 UTC
2015 x86_64

[ 3451.451953] ------------[ cut here ]------------
[ 3451.451993] WARNING: CPU: 0 PID: 0 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_display.c:11293 intel_check_page_flip+0xf4/0x100 [i915]()
[ 3451.451995] Kicking stuck page flip: queued at 206369, now 206374
[ 3451.451997] Modules linked in: binfmt_misc ip6table_filter ip6_tables xt_owner iptable_filter ip_tables x_tables nls_iso8859_1 intel_rapl iosf_mbi asus_nb_wmi x86_pkg_temp_thermal asus_wmi intel_powerclamp sparse_keymap uvcvideo coretemp snd_hda_codec_hdmi videobuf2_vmalloc snd_hda_codec_realtek snd_hda_codec_generic kvm_intel snd_hda_intel videobuf2_memops snd_hda_codec videobuf2_core snd_hda_core v4l2_common videodev snd_hwdep media kvm snd_pcm snd_seq_midi snd_seq_midi_event arc4 rtl8192ce snd_rawmidi rtl_pci rtl8192c_common rtlwifi snd_seq snd_seq_device mac80211 snd_timer input_leds joydev serio_raw cfg80211 snd mei_me soundcore shpchp mei lpc_ich mac_hid overlay parport_pc ppdev lp parport autofs4 jitterentropy_rng drbg ansi_cprng xts gf128mul algif_skcipher af_alg dm_crypt crct10dif_pclmul
[ 3451.452040]  crc32_pclmul cryptd i915 psmouse i2c_algo_bit drm_kms_helper alx syscopyarea mdio sysfillrect sysimgblt fb_sys_fops ahci drm libahci wmi video fjes
[ 3451.452053] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.3.0-040300-generic #201511020949
[ 3451.452054] Hardware name: ASUSTeK COMPUTER INC. X502CA/X502CA, BIOS X502CA.209 06/09/2013
[ 3451.452056]  ffffffffc0217090 ffff88011ee03d78 ffffffff813a4c94 ffff88011ee03dc0
[ 3451.452059]  ffff88011ee03db0 ffffffff81078052 ffff880035ec6800 ffff8801196ab000
[ 3451.452062]  ffff880035ec69a8 0000000000000000 ffff8800baf13780 ffff88011ee03e10
[ 3451.452064] Call Trace:
[ 3451.452066]  <IRQ>  [<ffffffff813a4c94>] dump_stack+0x44/0x60
[ 3451.452075]  [<ffffffff81078052>] warn_slowpath_common+0x82/0xc0
[ 3451.452078]  [<ffffffff810780dc>] warn_slowpath_fmt+0x4c/0x50
[ 3451.452099]  [<ffffffffc01a576d>] ? __intel_pageflip_stall_check+0xbd/0x100 [i915]
[ 3451.452118]  [<ffffffffc01bd974>] intel_check_page_flip+0xf4/0x100 [i915]
[ 3451.452129]  [<ffffffffc014d128>] ironlake_irq_handler+0x288/0xbd0 [i915]
[ 3451.452133]  [<ffffffff810a012d>] ? ttwu_do_activate.constprop.88+0x5d/0x70
[ 3451.452136]  [<ffffffff810a09d7>] ? try_to_wake_up+0x47/0x360
[ 3451.452140]  [<ffffffff810ce7b4>] handle_irq_event_percpu+0x74/0x180
[ 3451.452143]  [<ffffffff810ce905>] handle_irq_event+0x45/0x70
[ 3451.452146]  [<ffffffff810d18cd>] handle_edge_irq+0x7d/0x150
[ 3451.452148]  [<ffffffff8101810a>] handle_irq+0x1a/0x30
[ 3451.452152]  [<ffffffff817b5e7b>] do_IRQ+0x4b/0xd0
[ 3451.452154]  [<ffffffff817b3b02>] common_interrupt+0x82/0x82
[ 3451.452155]  <EOI>  [<ffffffff81654ca0>] ? cpuidle_enter_state+0x130/0x270
[ 3451.452162]  [<ffffffff81654c7b>] ? cpuidle_enter_state+0x10b/0x270
[ 3451.452164]  [<ffffffff81654e17>] cpuidle_enter+0x17/0x20
[ 3451.452167]  [<ffffffff810b84e2>] call_cpuidle+0x32/0x60
[ 3451.452170]  [<ffffffff81654df3>] ? cpuidle_select+0x13/0x20
[ 3451.452172]  [<ffffffff810b8767>] cpu_startup_entry+0x257/0x310
[ 3451.452175]  [<ffffffff817a73bc>] rest_init+0x7c/0x80
[ 3451.452179]  [<ffffffff81d52fb9>] start_kernel+0x46f/0x47c
[ 3451.452183]  [<ffffffff81d52120>] ? early_idt_handler_array+0x120/0x120
[ 3451.452186]  [<ffffffff81d52339>] x86_64_start_reservations+0x2a/0x2c
[ 3451.452188]  [<ffffffff81d52476>] x86_64_start_kernel+0x13b/0x14a
[ 3451.452191] ---[ end trace 377bade5795b8709 ]---

** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1505242

Title:
  WARNING: ... intel_display.c:11100 intel_check_page_flip

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I see warnings similar to this occasionally in the dmesg output.
  I first noticed it, when the system refused to put load on all but one core, and I tried to find the reason.
  But it happened again a few times, and I did not notice that effect (or any).
  I do not know the trigger. I suspect playing video.
  This is a fresh install of Ubuntu 15.04 on a fresh hardware.

  I found several similar error reports with google. All appeared to be unsolved.
  I thought, I submit this report, anyway. Perhaps it provides some new information.

  [ 5967.045926] ------------[ cut here ]------------
  [ 5967.045949] WARNING: CPU: 3 PID: 0 at /build/linux-qOmAV7/linux-3.19.0/ubuntu/i915/intel_display.c:11100 intel_check_page_flip+0x11c/0x130 [i915_bpo]()
  [ 5967.045950] Kicking stuck page flip: queued at 343930, now 343934
  [ 5967.045951] Modules linked in: cfg80211 binfmt_misc dm_crypt nls_iso8859_1 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel eeepc_wmi snd_hda_controller asus_wmi sparse_keymap snd_hda_codec snd_usb_audio snd_usbmidi_lib snd_hwdep x86_pkg_temp_thermal snd_pcm coretemp kvm_intel kvm snd_seq_midi snd_seq_midi_event crct10dif_pclmul snd_rawmidi ip6t_REJECT nf_reject_ipv6 crc32_pclmul ghash_clmulni_intel nf_log_ipv6 snd_seq uvcvideo aesni_intel videobuf2_vmalloc videobuf2_memops snd_seq_device aes_x86_64 videobuf2_core lrw xt_hl gf128mul v4l2_common glue_helper hid_multitouch videodev ablk_helper ip6t_rt cryptd snd_timer media snd joydev serio_raw i915_bpo nf_conntrack_ipv6 soundcore nf_defrag_ipv6 intel_ips drm_kms_helper ipt_REJECT nf_reject_ipv4 drm 8250_fintek nf_log_ipv4
  [ 5967.045968]  nf_log_common i2c_algo_bit i2c_hid shpchp xt_LOG mac_hid acpi_pad xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack iptable_filter ip_tables x_tables parport_pc ppdev lp parport autofs4 btrfs xor raid6_pq hid_generic usbhid hid mxm_wmi e1000e psmouse ptp pps_core ahci libahci wmi video
  [ 5967.045984] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 3.19.0-30-generic #34-Ubuntu
  [ 5967.045985] Hardware name: System manufacturer System Product Name/Z170-A, BIOS 0502 07/14/2015
  [ 5967.045986]  ffffffffc076c138 ffff88046ed83d68 ffffffff817c4d5f 0000000000000007
  [ 5967.045987]  ffff88046ed83db8 ffff88046ed83da8 ffffffff81076a8a ffff88046ed83db8
  [ 5967.045988]  ffff88045ac18800 ffff880456f46000 ffff88045ac189a8 0000000000000000
  [ 5967.045990] Call Trace:
  [ 5967.045991]  <IRQ>  [<ffffffff817c4d5f>] dump_stack+0x45/0x57
  [ 5967.045997]  [<ffffffff81076a8a>] warn_slowpath_common+0x8a/0xc0
  [ 5967.045999]  [<ffffffff81076b06>] warn_slowpath_fmt+0x46/0x50
  [ 5967.046011]  [<ffffffffc07112ec>] intel_check_page_flip+0x11c/0x130 [i915_bpo]
  [ 5967.046021]  [<ffffffffc06d821e>] gen8_irq_handler+0x37e/0x5d0 [i915_bpo]
  [ 5967.046023]  [<ffffffff8101e289>] ? read_tsc+0x9/0x10
  [ 5967.046026]  [<ffffffff810cea87>] handle_irq_event_percpu+0x77/0x1a0
  [ 5967.046027]  [<ffffffff810cebf1>] handle_irq_event+0x41/0x70
  [ 5967.046029]  [<ffffffff810d1c5e>] handle_edge_irq+0x6e/0x120
  [ 5967.046031]  [<ffffffff81017772>] handle_irq+0x22/0x40
  [ 5967.046033]  [<ffffffff817cee1f>] do_IRQ+0x4f/0xf0
  [ 5967.046034]  [<ffffffff817ccc2d>] common_interrupt+0x6d/0x6d
  [ 5967.046035]  <EOI>  [<ffffffff8109f117>] ? finish_task_switch+0x67/0x150
  [ 5967.046039]  [<ffffffff817c6fac>] __schedule+0x39c/0x8e0
  [ 5967.046041]  [<ffffffff817c7a69>] schedule_preempt_disabled+0x29/0x70
  [ 5967.046043]  [<ffffffff810b7bc7>] cpu_startup_entry+0x187/0x3b0
  [ 5967.046045]  [<ffffffff81049117>] start_secondary+0x197/0x1c0
  [ 5967.046046] ---[ end trace 6b6de72fa2c286b6 ]---

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-30-generic 3.19.0-30.34
  ProcVersionSignature: Ubuntu 3.19.0-30.34-generic 3.19.8-ckt6
  Uname: Linux 3.19.0-30-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  lacko      1507 F.... pulseaudio
   /dev/snd/controlC0:  lacko      1507 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Mon Oct 12 15:05:50 2015
  InstallationDate: Installed on 2015-10-10 (2 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: System manufacturer System Product Name
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-30-generic.efi.signed root=/dev/mapper/ubuntu_ssd1-ubuntu_root ro rootflags=subvol=@ quiet splash
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-30-generic N/A
   linux-backports-modules-3.19.0-30-generic  N/A
   linux-firmware                             1.143.3
  RfKill:
   
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/14/2015
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0502
  dmi.board.asset.tag: Default string
  dmi.board.name: Z170-A
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Default string
  dmi.chassis.type: 3
  dmi.chassis.vendor: Default string
  dmi.chassis.version: Default string
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0502:bd07/14/2015:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ170-A:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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