Attachment 118529 Details for Bug 92185 – flip warnings

flip warnings

flip-warnings.txt (text/plain), 20.17 KB, created by Jesse Barnes on 2015-09-29 21:45:12 UTC

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Creator: Jesse Barnes

Created: 2015-09-29 21:45:12 UTC

Size: 20.17 KB

patch

obsolete

>[  373.431933] ------------[ cut here ]------------
>[  373.431985] WARNING: CPU: 0 PID: 2438 at drivers/gpu/drm/i915/intel_pm.c:3659 skl_update_other_pipe_wm+0x20c/0x220 [i915]()
>[  373.431989] WARN_ON(!wm_changed)
>[  373.431993] Modules linked in: snd_hda_intel i915 intel_gtt drm_kms_helper drm snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic joydev intel_rapl iosf_mbi x86_pkg_temp_thermal rfcomm snd_hda_codec intel_powerclamp bnep coretemp bluetooth hid_generic snd_hda_core kvm_intel kvm snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi dm_multipath snd_seq crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_seq_device snd_timer snd aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd psmouse soundcore asix serio_raw mei_me mei usbnet sdhci_pci mii sdhci usbhid binfmt_misc i2c_hid hid winbond_cir rc_core soc_button_array 8250_fintek nls_iso8859_1 parport_pc ppdev acpi_pad mac_hid lp parport dm_mirror dm_region_hash dm_log i2c_algo_bit e1000e syscopyarea sysfillrect sysimgblt ptp fb_sys_fops pps_core ahci libahci wmi video [last unloaded: drm]
>[  373.432153] CPU: 0 PID: 2438 Comm: kms_flip Tainted: G     U  W       4.3.0-rc3+ #17
>[  373.432157] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.R00.B089.B01.1506230517 06/23/2015
>[  373.432162]  ffffffffc086c678 ffff8800725a76a8 ffffffff8139a6dd ffff8800725a76f0
>[  373.432169]  ffff8800725a76e0 ffffffff81075f16 ffff88016d9fb000 ffff8800725a7778
>[  373.432174]  ffff8800725a782c ffff88016d9f9000 ffff880080af3380 ffff8800725a7740
>[  373.432181] Call Trace:
>[  373.432193]  [<ffffffff8139a6dd>] dump_stack+0x44/0x57
>[  373.432202]  [<ffffffff81075f16>] warn_slowpath_common+0x86/0xc0
>[  373.432209]  [<ffffffff81075f9c>] warn_slowpath_fmt+0x4c/0x50
>[  373.432218]  [<ffffffff810a0000>] ? sched_fork+0x180/0x1e0
>[  373.432249]  [<ffffffffc07aeefc>] skl_update_other_pipe_wm+0x20c/0x220 [i915]
>[  373.432280]  [<ffffffffc07af1e0>] skl_update_wm+0x2d0/0x8f0 [i915]
>[  373.432288]  [<ffffffff8177bce8>] ? __schedule+0x358/0x910
>[  373.432319]  [<ffffffffc07b080e>] intel_update_watermarks+0x1e/0x30 [i915]
>[  373.432372]  [<ffffffffc08084fd>] haswell_crtc_disable+0x15d/0x2d0 [i915]
>[  373.432424]  [<ffffffffc081049e>] intel_atomic_commit+0x10e/0x1ed0 [i915]
>[  373.432433]  [<ffffffff811ccc3f>] ? kmem_cache_alloc_trace+0x17f/0x1f0
>[  373.432452]  [<ffffffffc0040493>] ? drm_atomic_helper_connector_duplicate_state+0x33/0x80 [drm_kms_helper]
>[  373.432498]  [<ffffffffc0176af8>] ? drm_atomic_check_only+0x158/0x580 [drm]
>[  373.432531]  [<ffffffffc017659a>] ? drm_atomic_set_mode_prop_for_crtc+0x2a/0x180 [drm]
>[  373.432560]  [<ffffffffc0176f57>] drm_atomic_commit+0x37/0x60 [drm]
>[  373.432577]  [<ffffffffc0042787>] drm_atomic_helper_set_config+0x77/0xb0 [drm_kms_helper]
>[  373.432606]  [<ffffffffc0166b64>] drm_mode_set_config_internal+0x64/0x100 [drm]
>[  373.432637]  [<ffffffffc016aa6d>] drm_mode_setcrtc+0xdd/0x4f0 [drm]
>[  373.432657]  [<ffffffffc015d037>] drm_ioctl+0x297/0x490 [drm]
>[  373.432686]  [<ffffffffc016a990>] ? drm_mode_setplane+0x1c0/0x1c0 [drm]
>[  373.432694]  [<ffffffff811fe7dd>] do_vfs_ioctl+0x2cd/0x4b0
>[  373.432700]  [<ffffffff811a8ea8>] ? do_munmap+0x288/0x380
>[  373.432705]  [<ffffffff811fea39>] SyS_ioctl+0x79/0x90
>[  373.432714]  [<ffffffff8177faf6>] entry_SYSCALL_64_fastpath+0x16/0x75
>[  373.432719] ---[ end trace 7866e6e1bfdbb269 ]---
>[  385.486507] ------------[ cut here ]------------
>[  385.486526] WARNING: CPU: 2 PID: 2438 at drivers/gpu/drm/i915/intel_pm.c:3659 skl_update_other_pipe_wm+0x20c/0x220 [i915]()
>[  385.486527] WARN_ON(!wm_changed)
>[  385.486528] Modules linked in: snd_hda_intel i915 intel_gtt drm_kms_helper drm snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic joydev intel_rapl iosf_mbi x86_pkg_temp_thermal rfcomm snd_hda_codec intel_powerclamp bnep coretemp bluetooth hid_generic snd_hda_core kvm_intel kvm snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi dm_multipath snd_seq crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_seq_device snd_timer snd aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd psmouse soundcore asix serio_raw mei_me mei usbnet sdhci_pci mii sdhci usbhid binfmt_misc i2c_hid hid winbond_cir rc_core soc_button_array 8250_fintek nls_iso8859_1 parport_pc ppdev acpi_pad mac_hid lp parport dm_mirror dm_region_hash dm_log i2c_algo_bit e1000e syscopyarea sysfillrect sysimgblt ptp fb_sys_fops pps_core ahci libahci wmi video [last unloaded: drm]
>[  385.486564] CPU: 2 PID: 2438 Comm: kms_flip Tainted: G     U  W       4.3.0-rc3+ #17
>[  385.486565] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.R00.B089.B01.1506230517 06/23/2015
>[  385.486567]  ffffffffc086c678 ffff8800725a7680 ffffffff8139a6dd ffff8800725a76c8
>[  385.486569]  ffff8800725a76b8 ffffffff81075f16 ffff88016c271000 ffff8800725a7750
>[  385.486570]  ffff8800725a7804 ffff88016d9f9000 ffff880080af3380 ffff8800725a7718
>[  385.486572] Call Trace:
>[  385.486576]  [<ffffffff8139a6dd>] dump_stack+0x44/0x57
>[  385.486579]  [<ffffffff81075f16>] warn_slowpath_common+0x86/0xc0
>[  385.486581]  [<ffffffff81075f9c>] warn_slowpath_fmt+0x4c/0x50
>[  385.486589]  [<ffffffffc07aeefc>] skl_update_other_pipe_wm+0x20c/0x220 [i915]
>[  385.486597]  [<ffffffffc07af1e0>] skl_update_wm+0x2d0/0x8f0 [i915]
>[  385.486599]  [<ffffffff810aa617>] ? dequeue_task_fair+0x5a7/0x700
>[  385.486601]  [<ffffffff810aab75>] ? put_prev_entity+0x35/0x660
>[  385.486609]  [<ffffffffc07b080e>] intel_update_watermarks+0x1e/0x30 [i915]
>[  385.486622]  [<ffffffffc08164a3>] haswell_crtc_enable+0x2f3/0x800 [i915]
>[  385.486635]  [<ffffffffc08107cd>] intel_atomic_commit+0x43d/0x1ed0 [i915]
>[  385.486647]  [<ffffffffc0176af8>] ? drm_atomic_check_only+0x158/0x580 [drm]
>[  385.486654]  [<ffffffffc0176f57>] drm_atomic_commit+0x37/0x60 [drm]
>[  385.486660]  [<ffffffffc0042787>] drm_atomic_helper_set_config+0x77/0xb0 [drm_kms_helper]
>[  385.486668]  [<ffffffffc0166b64>] drm_mode_set_config_internal+0x64/0x100 [drm]
>[  385.486676]  [<ffffffffc016aa6d>] drm_mode_setcrtc+0xdd/0x4f0 [drm]
>[  385.486680]  [<ffffffffc015d037>] drm_ioctl+0x297/0x490 [drm]
>[  385.486687]  [<ffffffffc016a990>] ? drm_mode_setplane+0x1c0/0x1c0 [drm]
>[  385.486690]  [<ffffffff811fe7dd>] do_vfs_ioctl+0x2cd/0x4b0
>[  385.486692]  [<ffffffff811a8ea8>] ? do_munmap+0x288/0x380
>[  385.486694]  [<ffffffff811fea39>] SyS_ioctl+0x79/0x90
>[  385.486696]  [<ffffffff8177faf6>] entry_SYSCALL_64_fastpath+0x16/0x75
>[  385.486698] ---[ end trace 7866e6e1bfdbb26a ]---
>[  390.599605] ------------[ cut here ]------------
>[  390.599623] WARNING: CPU: 0 PID: 2438 at drivers/gpu/drm/i915/intel_pm.c:3659 skl_update_other_pipe_wm+0x20c/0x220 [i915]()
>[  390.599624] WARN_ON(!wm_changed)
>[  390.599625] Modules linked in: snd_hda_intel i915 intel_gtt drm_kms_helper drm snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic joydev intel_rapl iosf_mbi x86_pkg_temp_thermal rfcomm snd_hda_codec intel_powerclamp bnep coretemp bluetooth hid_generic snd_hda_core kvm_intel kvm snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi dm_multipath snd_seq crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_seq_device snd_timer snd aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd psmouse soundcore asix serio_raw mei_me mei usbnet sdhci_pci mii sdhci usbhid binfmt_misc i2c_hid hid winbond_cir rc_core soc_button_array 8250_fintek nls_iso8859_1 parport_pc ppdev acpi_pad mac_hid lp parport dm_mirror dm_region_hash dm_log i2c_algo_bit e1000e syscopyarea sysfillrect sysimgblt ptp fb_sys_fops pps_core ahci libahci wmi video [last unloaded: drm]
>[  390.599662] CPU: 0 PID: 2438 Comm: kms_flip Tainted: G     U  W       4.3.0-rc3+ #17
>[  390.599663] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.R00.B089.B01.1506230517 06/23/2015
>[  390.599665]  ffffffffc086c678 ffff8800725a76a8 ffffffff8139a6dd ffff8800725a76f0
>[  390.599666]  ffff8800725a76e0 ffffffff81075f16 ffff88016c271000 ffff8800725a7778
>[  390.599668]  ffff8800725a782c ffff88016d9f9000 ffff880080af3380 ffff8800725a7740
>[  390.599669] Call Trace:
>[  390.599674]  [<ffffffff8139a6dd>] dump_stack+0x44/0x57
>[  390.599677]  [<ffffffff81075f16>] warn_slowpath_common+0x86/0xc0
>[  390.599679]  [<ffffffff81075f9c>] warn_slowpath_fmt+0x4c/0x50
>[  390.599681]  [<ffffffff810a0000>] ? sched_fork+0x180/0x1e0
>[  390.599689]  [<ffffffffc07aeefc>] skl_update_other_pipe_wm+0x20c/0x220 [i915]
>[  390.599697]  [<ffffffffc07af1e0>] skl_update_wm+0x2d0/0x8f0 [i915]
>[  390.599702]  [<ffffffff8101fd59>] ? sched_clock+0x9/0x10
>[  390.599710]  [<ffffffffc07b080e>] intel_update_watermarks+0x1e/0x30 [i915]
>[  390.599723]  [<ffffffffc08084fd>] haswell_crtc_disable+0x15d/0x2d0 [i915]
>[  390.599736]  [<ffffffffc081049e>] intel_atomic_commit+0x10e/0x1ed0 [i915]
>[  390.599738]  [<ffffffff8177da0f>] ? __ww_mutex_lock+0x5f/0x97
>[  390.599750]  [<ffffffffc0176af8>] ? drm_atomic_check_only+0x158/0x580 [drm]
>[  390.599758]  [<ffffffffc017659a>] ? drm_atomic_set_mode_prop_for_crtc+0x2a/0x180 [drm]
>[  390.599765]  [<ffffffffc0176f57>] drm_atomic_commit+0x37/0x60 [drm]
>[  390.599771]  [<ffffffffc0042787>] drm_atomic_helper_set_config+0x77/0xb0 [drm_kms_helper]
>[  390.599778]  [<ffffffffc0166b64>] drm_mode_set_config_internal+0x64/0x100 [drm]
>[  390.599786]  [<ffffffffc016aa6d>] drm_mode_setcrtc+0xdd/0x4f0 [drm]
>[  390.599791]  [<ffffffffc015d037>] drm_ioctl+0x297/0x490 [drm]
>[  390.599798]  [<ffffffffc016a990>] ? drm_mode_setplane+0x1c0/0x1c0 [drm]
>[  390.599800]  [<ffffffff811fe7dd>] do_vfs_ioctl+0x2cd/0x4b0
>[  390.599802]  [<ffffffff811a8ea8>] ? do_munmap+0x288/0x380
>[  390.599804]  [<ffffffff811fea39>] SyS_ioctl+0x79/0x90
>[  390.599806]  [<ffffffff8177faf6>] entry_SYSCALL_64_fastpath+0x16/0x75
>[  390.599807] ---[ end trace 7866e6e1bfdbb26b ]---
>[  390.601039] ------------[ cut here ]------------
>[  390.601069] WARNING: CPU: 1 PID: 2438 at drivers/gpu/drm/i915/intel_pm.c:3659 skl_update_other_pipe_wm+0x20c/0x220 [i915]()
>[  390.601072] WARN_ON(!wm_changed)
>[  390.601074] Modules linked in: snd_hda_intel i915 intel_gtt drm_kms_helper drm snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic joydev intel_rapl iosf_mbi x86_pkg_temp_thermal rfcomm snd_hda_codec intel_powerclamp bnep coretemp bluetooth hid_generic snd_hda_core kvm_intel kvm snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi dm_multipath snd_seq crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_seq_device snd_timer snd aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd psmouse soundcore asix serio_raw mei_me mei usbnet sdhci_pci mii sdhci usbhid binfmt_misc i2c_hid hid winbond_cir rc_core soc_button_array 8250_fintek nls_iso8859_1 parport_pc ppdev acpi_pad mac_hid lp parport dm_mirror dm_region_hash dm_log i2c_algo_bit e1000e syscopyarea sysfillrect sysimgblt ptp fb_sys_fops pps_core ahci libahci wmi video [last unloaded: drm]
>[  390.601114] CPU: 1 PID: 2438 Comm: kms_flip Tainted: G     U  W       4.3.0-rc3+ #17
>[  390.601115] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.R00.B089.B01.1506230517 06/23/2015
>[  390.601117]  ffffffffc086c678 ffff8800725a7680 ffffffff8139a6dd ffff8800725a76c8
>[  390.601120]  ffff8800725a76b8 ffffffff81075f16 ffff88016c271000 ffff8800725a7750
>[  390.601122]  ffff8800725a7804 ffff88016d9fb000 ffff880080af3380 ffff8800725a7718
>[  390.601124] Call Trace:
>[  390.601128]  [<ffffffff8139a6dd>] dump_stack+0x44/0x57
>[  390.601131]  [<ffffffff81075f16>] warn_slowpath_common+0x86/0xc0
>[  390.601134]  [<ffffffff81075f9c>] warn_slowpath_fmt+0x4c/0x50
>[  390.601136]  [<ffffffff81070000>] ? do_jit+0x9c0/0x18e0
>[  390.601159]  [<ffffffffc07aeefc>] skl_update_other_pipe_wm+0x20c/0x220 [i915]
>[  390.601168]  [<ffffffffc07af1e0>] skl_update_wm+0x2d0/0x8f0 [i915]
>[  390.601170]  [<ffffffff810aa617>] ? dequeue_task_fair+0x5a7/0x700
>[  390.601171]  [<ffffffff810aab75>] ? put_prev_entity+0x35/0x660
>[  390.601179]  [<ffffffffc07b080e>] intel_update_watermarks+0x1e/0x30 [i915]
>[  390.601193]  [<ffffffffc08164a3>] haswell_crtc_enable+0x2f3/0x800 [i915]
>[  390.601206]  [<ffffffffc08107cd>] intel_atomic_commit+0x43d/0x1ed0 [i915]
>[  390.601208]  [<ffffffff8177da0f>] ? __ww_mutex_lock+0x5f/0x97
>[  390.601217]  [<ffffffffc0176af8>] ? drm_atomic_check_only+0x158/0x580 [drm]
>[  390.601225]  [<ffffffffc017659a>] ? drm_atomic_set_mode_prop_for_crtc+0x2a/0x180 [drm]
>[  390.601232]  [<ffffffffc0176f57>] drm_atomic_commit+0x37/0x60 [drm]
>[  390.601237]  [<ffffffffc0042787>] drm_atomic_helper_set_config+0x77/0xb0 [drm_kms_helper]
>[  390.601244]  [<ffffffffc0166b64>] drm_mode_set_config_internal+0x64/0x100 [drm]
>[  390.601252]  [<ffffffffc016aa6d>] drm_mode_setcrtc+0xdd/0x4f0 [drm]
>[  390.601257]  [<ffffffffc015d037>] drm_ioctl+0x297/0x490 [drm]
>[  390.601264]  [<ffffffffc016a990>] ? drm_mode_setplane+0x1c0/0x1c0 [drm]
>[  390.601266]  [<ffffffff811fe7dd>] do_vfs_ioctl+0x2cd/0x4b0
>[  390.601267]  [<ffffffff811a8ea8>] ? do_munmap+0x288/0x380
>[  390.601269]  [<ffffffff811fea39>] SyS_ioctl+0x79/0x90
>[  390.601270]  [<ffffffff8177faf6>] entry_SYSCALL_64_fastpath+0x16/0x75
>[  390.601272] ---[ end trace 7866e6e1bfdbb26c ]---
>[  395.730832] ------------[ cut here ]------------
>[  395.730851] WARNING: CPU: 2 PID: 2438 at drivers/gpu/drm/i915/intel_pm.c:3659 skl_update_other_pipe_wm+0x20c/0x220 [i915]()
>[  395.730853] WARN_ON(!wm_changed)
>[  395.730854] Modules linked in: snd_hda_intel i915 intel_gtt drm_kms_helper drm snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic joydev intel_rapl iosf_mbi x86_pkg_temp_thermal rfcomm snd_hda_codec intel_powerclamp bnep coretemp bluetooth hid_generic snd_hda_core kvm_intel kvm snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi dm_multipath snd_seq crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_seq_device snd_timer snd aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd psmouse soundcore asix serio_raw mei_me mei usbnet sdhci_pci mii sdhci usbhid binfmt_misc i2c_hid hid winbond_cir rc_core soc_button_array 8250_fintek nls_iso8859_1 parport_pc ppdev acpi_pad mac_hid lp parport dm_mirror dm_region_hash dm_log i2c_algo_bit e1000e syscopyarea sysfillrect sysimgblt ptp fb_sys_fops pps_core ahci libahci wmi video [last unloaded: drm]
>[  395.730890] CPU: 2 PID: 2438 Comm: kms_flip Tainted: G     U  W       4.3.0-rc3+ #17
>[  395.730892] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.R00.B089.B01.1506230517 06/23/2015
>[  395.730893]  ffffffffc086c678 ffff8800725a76a8 ffffffff8139a6dd ffff8800725a76f0
>[  395.730895]  ffff8800725a76e0 ffffffff81075f16 ffff88016c271000 ffff8800725a7778
>[  395.730896]  ffff8800725a782c ffff88016d9fb000 ffff880080af3380 ffff8800725a7740
>[  395.730899] Call Trace:
>[  395.730909]  [<ffffffff8139a6dd>] dump_stack+0x44/0x57
>[  395.730912]  [<ffffffff81075f16>] warn_slowpath_common+0x86/0xc0
>[  395.730913]  [<ffffffff81075f9c>] warn_slowpath_fmt+0x4c/0x50
>[  395.730921]  [<ffffffffc07aeefc>] skl_update_other_pipe_wm+0x20c/0x220 [i915]
>[  395.730929]  [<ffffffffc07af1e0>] skl_update_wm+0x2d0/0x8f0 [i915]
>[  395.730932]  [<ffffffff8101fd59>] ? sched_clock+0x9/0x10
>[  395.730941]  [<ffffffffc07b080e>] intel_update_watermarks+0x1e/0x30 [i915]
>[  395.730957]  [<ffffffffc08084fd>] haswell_crtc_disable+0x15d/0x2d0 [i915]
>[  395.731002]  [<ffffffffc081049e>] intel_atomic_commit+0x10e/0x1ed0 [i915]
>[  395.731022]  [<ffffffff811ccc3f>] ? kmem_cache_alloc_trace+0x17f/0x1f0
>[  395.731031]  [<ffffffffc0040493>] ? drm_atomic_helper_connector_duplicate_state+0x33/0x80 [drm_kms_helper]
>[  395.731046]  [<ffffffffc0176af8>] ? drm_atomic_check_only+0x158/0x580 [drm]
>[  395.731057]  [<ffffffffc017659a>] ? drm_atomic_set_mode_prop_for_crtc+0x2a/0x180 [drm]
>[  395.731067]  [<ffffffffc0176f57>] drm_atomic_commit+0x37/0x60 [drm]
>[  395.731075]  [<ffffffffc0042787>] drm_atomic_helper_set_config+0x77/0xb0 [drm_kms_helper]
>[  395.731084]  [<ffffffffc0166b64>] drm_mode_set_config_internal+0x64/0x100 [drm]
>[  395.731095]  [<ffffffffc016aa6d>] drm_mode_setcrtc+0xdd/0x4f0 [drm]
>[  395.731102]  [<ffffffffc015d037>] drm_ioctl+0x297/0x490 [drm]
>[  395.731110]  [<ffffffffc016a990>] ? drm_mode_setplane+0x1c0/0x1c0 [drm]
>[  395.731113]  [<ffffffff811fe7dd>] do_vfs_ioctl+0x2cd/0x4b0
>[  395.731115]  [<ffffffff811a8ea8>] ? do_munmap+0x288/0x380
>[  395.731116]  [<ffffffff811fea39>] SyS_ioctl+0x79/0x90
>[  395.731120]  [<ffffffff8177faf6>] entry_SYSCALL_64_fastpath+0x16/0x75
>[  395.731121] ---[ end trace 7866e6e1bfdbb26d ]---
>[  396.007449] [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on pipe C (start=946 end=947) time 10 us, min 1192, max 1199, scanline start 2, end 2
>[  401.368394] ------------[ cut here ]------------
>[  401.368420] WARNING: CPU: 0 PID: 2438 at drivers/gpu/drm/i915/intel_pm.c:3659 skl_update_other_pipe_wm+0x20c/0x220 [i915]()
>[  401.368423] WARN_ON(!wm_changed)
>[  401.368464] Modules linked in: snd_hda_intel i915 intel_gtt drm_kms_helper drm snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic joydev intel_rapl iosf_mbi x86_pkg_temp_thermal rfcomm snd_hda_codec intel_powerclamp bnep coretemp bluetooth hid_generic snd_hda_core kvm_intel kvm snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi dm_multipath snd_seq crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_seq_device snd_timer snd aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd psmouse soundcore asix serio_raw mei_me mei usbnet sdhci_pci mii sdhci usbhid binfmt_misc i2c_hid hid winbond_cir rc_core soc_button_array 8250_fintek nls_iso8859_1 parport_pc ppdev acpi_pad mac_hid lp parport dm_mirror dm_region_hash dm_log i2c_algo_bit e1000e syscopyarea sysfillrect sysimgblt ptp fb_sys_fops pps_core ahci libahci wmi video [last unloaded: drm]
>[  401.368473] CPU: 0 PID: 2438 Comm: kms_flip Tainted: G     U  W       4.3.0-rc3+ #17
>[  401.368474] Hardware name: Intel Corporation Skylake Client platform/Skylake Y LPDDR3 RVP3, BIOS SKLSE2R1.R00.B089.B01.1506230517 06/23/2015
>[  401.368478]  ffffffffc086c678 ffff8800725a7450 ffffffff8139a6dd ffff8800725a7498
>[  401.368480]  ffff8800725a7488 ffffffff81075f16 ffff88016d9f9000 ffff8800725a7520
>[  401.368482]  ffff8800725a75d4 ffff88016d9fb000 ffff880080af3380 ffff8800725a74e8
>[  401.368482] Call Trace:
>[  401.368489]  [<ffffffff8139a6dd>] dump_stack+0x44/0x57
>[  401.368494]  [<ffffffff81075f16>] warn_slowpath_common+0x86/0xc0
>[  401.368497]  [<ffffffff81075f9c>] warn_slowpath_fmt+0x4c/0x50
>[  401.368514]  [<ffffffffc07aeefc>] skl_update_other_pipe_wm+0x20c/0x220 [i915]
>[  401.368530]  [<ffffffffc07af1e0>] skl_update_wm+0x2d0/0x8f0 [i915]
>[  401.368534]  [<ffffffff810aa617>] ? dequeue_task_fair+0x5a7/0x700
>[  401.368536]  [<ffffffff810aab75>] ? put_prev_entity+0x35/0x660
>[  401.368553]  [<ffffffffc07b080e>] intel_update_watermarks+0x1e/0x30 [i915]
>[  401.368582]  [<ffffffffc08164a3>] haswell_crtc_enable+0x2f3/0x800 [i915]
>[  401.368609]  [<ffffffffc08107cd>] intel_atomic_commit+0x43d/0x1ed0 [i915]
>[  401.368613]  [<ffffffff8177da0f>] ? __ww_mutex_lock+0x5f/0x97
>[  401.368635]  [<ffffffffc0176af8>] ? drm_atomic_check_only+0x158/0x580 [drm]
>[  401.368651]  [<ffffffffc017693d>] ? drm_atomic_add_affected_connectors+0x8d/0xf0 [drm]
>[  401.368730]  [<ffffffffc0176f57>] drm_atomic_commit+0x37/0x60 [drm]
>[  401.368740]  [<ffffffffc00433de>] restore_fbdev_mode+0x27e/0x2c0 [drm_kms_helper]
>[  401.368748]  [<ffffffffc0045413>] drm_fb_helper_restore_fbdev_mode_unlocked+0x33/0x80 [drm_kms_helper]
>[  401.368755]  [<ffffffffc004548c>] drm_fb_helper_set_par+0x2c/0x50 [drm_kms_helper]
>[  401.368783]  [<ffffffffc08284ea>] intel_fbdev_set_par+0x1a/0x60 [i915]
>[  401.368786]  [<ffffffff813a334a>] ? put_dec+0x1a/0x80
>[  401.368789]  [<ffffffff81416c41>] fb_set_var+0x191/0x400
>[  401.368794]  [<ffffffff8140df0c>] fbcon_blank+0x1bc/0x2b0
>[  401.368799]  [<ffffffff8149cd78>] do_unblank_screen+0xb8/0x1c0
>[  401.368803]  [<ffffffff814943fd>] vt_ioctl+0x105d/0x10e0
>[  401.368807]  [<ffffffff81487457>] tty_ioctl+0x1f7/0xbe0
>[  401.368811]  [<ffffffff811cca55>] ? kmem_cache_alloc+0x185/0x1f0
>[  401.368815]  [<ffffffff811fa7af>] ? getname_flags+0x4f/0x1f0
>[  401.368817]  [<ffffffff811cca55>] ? kmem_cache_alloc+0x185/0x1f0
>[  401.368820]  [<ffffffff811fe7dd>] do_vfs_ioctl+0x2cd/0x4b0
>[  401.368823]  [<ffffffff811fa753>] ? putname+0x53/0x60
>[  401.368825]  [<ffffffff811fea39>] SyS_ioctl+0x79/0x90
>[  401.368828]  [<ffffffff8177faf6>] entry_SYSCALL_64_fastpath+0x16/0x75
>[  401.368830] ---[ end trace 7866e6e1bfdbb26e ]---

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