Re: Kernel 3.19rc6 flooding intel_check_page_flip warnings when using compton

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On Mon, 02 Feb 2015, Sakari Kapanen <sakari.m.kapanen@xxxxxxxxxxxxxx> wrote:
> Dear maintainers,
>
> On an Asus Zenbook UX32VD laptop with an i5-3317U CPU and Intel HD4000 
> graphics, I'm experiencing the following with the latest 3.19rc6 
> mainline kernel (built from the Arch Linux AUR package: 
> https://aur.archlinux.org/packages/linux-mainline/ ). The problem is 
> related to the compton compositor: https://github.com/chjj/compton

Hi, a full dmesg from boot to the problem with drm.debug=14 module
parameter set might be useful. Also, you may get fastest results if you
do a git bisect from a good to bad kernel.

BR,
Jani.


>
> Booting to X goes very normally. Then, I start compton with the command 
> `compton --backend glx`. As soon as I do that, the dmesg log starts 
> getting filled with these warnings. This is a snippet from my journalctl 
> log:
>
>      1 Feb 02 00:06:44 stroemsoe kernel: WARNING: CPU: 0 PID: 273 at 
> drivers/gpu/drm/i915/intel_display.c:9705 
> intel_check_page_flip+0xa2/0xf0 [i915]()
> 1421  Feb 02 00:06:44 stroemsoe kernel: WARN_ON(!in_irq())
>      1 Feb 02 00:06:44 stroemsoe kernel: Modules linked in:
>      2 Feb 02 00:06:44 stroemsoe kernel:  joydev mousedev msr uvcvideo 
> rtsx_usb_sdmmc videobuf2_vmalloc rtsx_usb_ms videobuf2_memops mmc_core 
> memstick videobuf2_core n ls_iso8859_1 rtsx_usb v4l2_common nls_cp437 
> videodev vfat fat coretemp intel_rapl media iosf_mbi 
> x86_pkg_temp_thermal intel_powerclamp arc4 kvm_intel kvm iwldvm       
> crct10dif_pclmul crc32_pclmul iTCO_wdt mac80211 iTCO_vendor_support 
> crc32c_intel ghash_clmulni_intel snd_hda_codec_hdmi nouveau aesni_intel 
> i915 aes_x86_64 snd      _hda_codec_realtek glue_helper lrw gf128mul 
> ablk_helper snd_hda_codec_generic cryptd iwlwifi pcspkr evdev mac_hid 
> snd_hda_intel psmouse serio_raw snd_hda_contro      ller snd_hda_codec 
> snd_hwdep mxm_wmi snd_pcm ttm snd_timer cfg80211 snd lpc_ich soundcore 
> mfd_core i2c_i801 fan int3403_thermal button i2c_algo_bit mei_me 
> drm_k      ms_helper mei drm battery tpm_tis
>      3 Feb 02 00:06:44 stroemsoe kernel:  thermal tpm shpchp ac 
> int3402_thermal i2c_core intel_gtt int3400_thermal acpi_thermal_rel 
> processor sch_fq_codel overlay ext4       crc16 mbcache jbd2 sd_mod 
> atkbd libps2 ahci libahci libata ehci_pci xhci_pci ehci_hcd xhci_hcd 
> scsi_mod usbcore usb_common i8042 serio asus_nb_wmi asus_wmi hwm      on 
> video rfkill sparse_keymap wmi led_class
>      4 Feb 02 00:06:44 stroemsoe kernel: CPU: 0 PID: 273 Comm: 
> irq/32-i915 Tainted: G        W      3.19.0-1-mainline #1
>      5 Feb 02 00:06:44 stroemsoe kernel: Hardware name: ASUSTeK COMPUTER 
> INC. UX32VD/UX32VD, BIOS UX32VD.213 11/16/2012
>      6 Feb 02 00:06:44 stroemsoe kernel:  0000000000000000 
> 00000000b983161a ffff8800c88afc78 ffffffff8153537c
>      7 Feb 02 00:06:44 stroemsoe kernel:  0000000000000000 
> ffff8800c88afcd0 ffff8800c88afcb8 ffffffff81075a9a
>      8 Feb 02 00:06:44 stroemsoe kernel:  ffff8800c88afcb8 
> ffff8800c7d99000 ffff8800c8e05000 ffff8800c8e05000
>      9 Feb 02 00:06:44 stroemsoe kernel: Call Trace:
>     10 Feb 02 00:06:44 stroemsoe kernel:  [<ffffffff8153537c>] 
> dump_stack+0x4c/0x6e
>     11 Feb 02 00:06:44 stroemsoe kernel:  [<ffffffff81075a9a>] 
> warn_slowpath_common+0x8a/0xc0
>     12 Feb 02 00:06:44 stroemsoe kernel:  [<ffffffff81075b25>] 
> warn_slowpath_fmt+0x55/0x70
>     13 Feb 02 00:06:44 stroemsoe kernel:  [<ffffffffa0596492>] 
> intel_check_page_flip+0xa2/0xf0 [i915]
>     14 Feb 02 00:06:44 stroemsoe kernel:  [<ffffffffa05639d8>] 
> ironlake_irq_handler+0x428/0x1000 [i915]
>     15 Feb 02 00:06:44 stroemsoe kernel:  [<ffffffff810a17aa>] ? 
> do_set_cpus_allowed+0x4a/0x60
>     16 Feb 02 00:06:44 stroemsoe kernel:  [<ffffffff810cf810>] ? 
> irq_thread_fn+0x50/0x50
>     17 Feb 02 00:06:44 stroemsoe kernel:  [<ffffffff810cf83d>] 
> irq_forced_thread_fn+0x2d/0x70
>     18 Feb 02 00:06:44 stroemsoe kernel:  [<ffffffff810cfb67>] 
> irq_thread+0x157/0x180
>     19 Feb 02 00:06:44 stroemsoe kernel:  [<ffffffff810cf950>] ? 
> wake_threads_waitq+0x30/0x30
>     20 Feb 02 00:06:44 stroemsoe kernel:  [<ffffffff810cfa10>] ? 
> irq_thread_dtor+0xc0/0xc0
>     21 Feb 02 00:06:44 stroemsoe kernel:  [<ffffffff81093dea>] 
> kthread+0xea/0x100
>     22 Feb 02 00:06:44 stroemsoe kernel:  [<ffffffff81093d00>] ? 
> kthread_create_on_node+0x1c0/0x1c0
>     23 Feb 02 00:06:44 stroemsoe kernel:  [<ffffffff8153ac3c>] 
> ret_from_fork+0x7c/0xb0
>     24 Feb 02 00:06:44 stroemsoe kernel:  [<ffffffff81093d00>] ? 
> kthread_create_on_node+0x1c0/0x1c0
>     25 Feb 02 00:06:44 stroemsoe kernel: ---[ end trace 46f2548918f46443 
> ]---
>
> I get about 4-5 of them per second as long as compton is running. 
> Starting compton with `--backend xrender` doesn't cause any warnings. 
> I'm using the SNA AccelMethod (the default), but switching to UXA or 
> Glamor didn't seem to have any effect. I haven't set any i915 specific 
> kernel flags.
>
> I don't see this on the current stable 3.18.5 kernel. The first time I 
> saw this was on 3.19rc3 when I tried it due to another bug in the 3.18 
> series. I haven't gone through all the 3.19 release candidates, but the 
> behaviour with 3.19rc6 seems identical to what I saw with 3.19rc3.
>
> Sakari Kapanen
>

-- 
Jani Nikula, Intel Open Source Technology Center
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