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[Bug 1430230] Re: Log flooding with warning message when using linux-lowlatency kernel

 

It seems to be fixed as of version 2:2.99.917-1~exp1ubuntu2.1 of
xserver-xorg-vieo-intel. I don't get the warnings anymore, be it with
threadirqs parameter and generic kernel, or with lowlatency kernel.

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https://bugs.launchpad.net/bugs/1430230

Title:
  Log flooding with warning message when using linux-lowlatency kernel

Status in One Hundred Papercuts:
  Confirmed
Status in X.org xf86-video-intel:
  Fix Released
Status in linux-meta-lowlatency package in Ubuntu:
  New
Status in xserver-xorg-video-intel package in Ubuntu:
  Confirmed

Bug description:
  In Vivid, when booting with lowlatency kernel (and possibly with
  generic kernel and threadirqs), Intel graphics driver will flood the
  logs with warning:

  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247652] ------------[ cut here ]------------
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247683] WARNING: CPU: 3 PID: 659 at /build/buildd/linux-3.19.0/drivers/gpu/drm/i915/intel_display.c:9705 intel_check_page_flip+0xa2/0xf0 [i915]()
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247685] WARN_ON(!in_irq())
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247686] Modules linked in: md4 nls_utf8 cifs fscache msr acpi_call(OE) xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 bridge stp llc ebtable_filter ebtables pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) binfmt_misc rfcomm bnep nls_iso8859_1 hid_apple intel_rapl iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel uvcvideo kvm videobuf2_vmalloc videobuf2_memops crct10dif_pclmul i915 videobuf2_core crc32_pclmul ghash_clmulni_intel v4l2_common videodev aesni_intel media aes_x86_64 btusb lrw gf128mul glue_helper bluetooth ablk_helper cryptd arc4 snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic iwldvm dm_multipath scsi_dh snd_hda_intel mac80211 snd_hda_controller snd_hda_codec joydev snd_hwdep serio_raw drm_kms_helper iwlwifi snd_pcm thinkpad_acpi cfg80211 snd_seq_midi snd_seq_midi_event nvram snd_rawmidi snd_seq ip6t_REJECT nf_reject_ipv6 snd_seq_device nf_log_ipv6 lpc_ich snd_timer drm shpchp xt_hl snd mei_me nf_conntrack_ipv6 mei nf_defrag_ipv6 i2c_algo_bit ip6t_rt soundcore wmi video mac_hid ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG xt_multiport xt_limit xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 xt_addrtype xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast cuse nf_nat_ftp nf_nat nf_conntrack_ftp parport_pc nf_conntrack ppdev iptable_filter ip_tables lp x_tables parport autofs4 btrfs xor raid6_pq hid_generic usbhid hid psmouse ahci e1000e sdhci_pci libahci sdhci ptp pps_core
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247768] CPU: 3 PID: 659 Comm: irq/32-i915 Tainted: G        W  OE  3.19.0-7-lowlatency #7-Ubuntu
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247770] Hardware name: LENOVO 2353CTO/2353CTO, BIOS G7ETA0WW (2.60 ) 05/14/2014
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247781]  ffffffffc0be7010 ffff88042a353c98 ffffffff817c5402 ffff88043e2cfd78
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247784]  ffff88042a353ce8 ffff88042a353cd8 ffffffff8107738a ffff88042a353cd8
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247786]  ffff880428f3f000 ffff880428f5e800 0000000000000000 0000000000000000
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247788] Call Trace:
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247795]  [<ffffffff817c5402>] dump_stack+0x4c/0x6e
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247805]  [<ffffffff8107738a>] warn_slowpath_common+0x8a/0xc0
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247814]  [<ffffffff81077406>] warn_slowpath_fmt+0x46/0x50
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247830]  [<ffffffffc0b92482>] intel_check_page_flip+0xa2/0xf0 [i915]
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247843]  [<ffffffffc0b5f4d8>] ironlake_irq_handler+0x428/0x1010 [i915]
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247847]  [<ffffffff8109b55d>] ? finish_task_switch+0x5d/0x100
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247854]  [<ffffffff810cfc60>] ? irq_thread_fn+0x50/0x50
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247858]  [<ffffffff810cfc8d>] irq_forced_thread_fn+0x2d/0x70
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247861]  [<ffffffff810d01af>] irq_thread+0x11f/0x150
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247865]  [<ffffffff810cfd00>] ? wake_threads_waitq+0x30/0x30
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247868]  [<ffffffff810d0090>] ? irq_thread_check_affinity+0x90/0x90
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247871]  [<ffffffff81095bc9>] kthread+0xc9/0xe0
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247874]  [<ffffffff81095b00>] ? kthread_create_on_node+0x1c0/0x1c0
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247877]  [<ffffffff817cc33c>] ret_from_fork+0x7c/0xb0
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247880]  [<ffffffff81095b00>] ? kthread_create_on_node+0x1c0/0x1c0
  Mar 10 09:35:43 franck-ThinkPad-T430s kernel: [ 2216.247883] ---[ end trace fa4376848cde145f ]---

  There seems to be a bug report here
  https://bugs.freedesktop.org/show_bug.cgi?id=89321

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2
  ProcVersionSignature: Ubuntu 3.19.0-7.7-generic 3.19.0
  Uname: Linux 3.19.0-7-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.16.2-0ubuntu2
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Tue Mar 10 10:46:28 2015
  DistUpgraded: 2015-03-09 18:17:36,430 DEBUG enabling apt cron job
  DistroCodename: vivid
  DistroVariant: ubuntu
  DkmsStatus:
   acpi-call, 1.1.0, 3.19.0-7-generic, x86_64: installed
   virtualbox, 4.3.24, 3.19.0-7-generic, x86_64: installed
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21fb]
  InstallationDate: Installed on 2014-12-13 (86 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  MachineType: LENOVO 2353CTO
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-7-generic.efi.signed root=/dev/mapper/ubuntu--vg-lv--root ro quiet splash nomdmonddf nomdmonisw vt.handoff=7
  SourcePackage: xserver-xorg-video-intel
  UpgradeStatus: Upgraded to vivid on 2015-03-09 (0 days ago)
  dmi.bios.date: 05/14/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G7ETA0WW (2.60 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 2353CTO
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrG7ETA0WW(2.60):bd05/14/2014:svnLENOVO:pn2353CTO:pvrThinkPadT430s:rvnLENOVO:rn2353CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2353CTO
  dmi.product.version: ThinkPad T430s
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.12.1+15.04.20150303-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.59-0ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.0-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.0-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.16.2.901-1ubuntu4
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2
  xserver.bootTime: Tue Mar 10 10:09:26 2015
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               12876 
   vendor                                     SEC
  xserver.version: 2:1.16.2.901-1ubuntu4

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References