FYI, we noticed the below changes on git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit 70a101f8639a712576c3ca1d910564c7e2ec91d8 ("drm/i915: Switch to full atomic helpers for plane updates/disable, take two") +----------------+------------+------------+ | | drm-intel/ | 70a101f863 | +----------------+------------+------------+ | boot_successes | 16 | 11 | +----------------+------------+------------+ [ 14.189928] ata2.00: configured for UDMA/133 [ 14.190028] scsi 1:0:0:0: Direct-Access ATA INTEL SSDSC2MH12 PPG2 PQ: 0 ANSI: 5 [ 14.299715] ------------[ cut here ]------------ [ 14.299728] WARNING: CPU: 1 PID: 16 at drivers/gpu/drm/drm_irq.c:1159 drm_wait_one_vblank+0x190/0x1a0 [drm]() [ 14.299729] vblank not available on crtc 0, ret=-22 [ 14.299741] Modules linked in: x86_pkg_temp_thermal coretemp kvm_intel kvm snd_hda_codec_hdmi crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel snd_hda_intel snd_hda_controller aesni_intel snd_hda_codec snd_hda_core lrw gf128mul glue_helper ablk_helper cryptd snd_hwdep winbond_cir snd_pcm snd_timer sdhci_acpi i915 rc_core ppdev ahci microcode libahci pcspkr serio_raw drm_kms_helper i2c_i801 snd libata drm video soundcore sdhci mmc_core parport_pc dw_dmac dw_dmac_core acpi_pad parport i2c_hid [ 14.299743] CPU: 1 PID: 16 Comm: kworker/1:0 Not tainted 4.1.0-rc4-wl-03205-g1c55fcf #1 [ 14.299744] Hardware name: Intel Corporation Broadwell Client platform/WhiteTip Mountain 1, BIOS BDW-E1R1.86C.0108.R00.1412212013 12/21/2014 [ 14.299749] Workqueue: events output_poll_execute [drm_kms_helper] [ 14.299750] ffffffffa0103800 ffff8801494dba08 ffffffff818c0ea7 000000004ab04ab0 [ 14.299752] ffff8801494dba58 ffff8801494dba48 ffffffff8107683a 0000000000000000 [ 14.299753] ffff880136c93000 0000000000000000 ffff88007f885000 0000000000000000 [ 14.299753] Call Trace: [ 14.299758] [] dump_stack+0x4c/0x65 [ 14.299761] [] warn_slowpath_common+0x8a/0xc0 [ 14.299763] [] warn_slowpath_fmt+0x46/0x50 [ 14.299770] [] drm_wait_one_vblank+0x190/0x1a0 [drm] [ 14.299793] [] ? intel_runtime_pm_get+0x4f/0x80 [i915] [ 14.299819] [] intel_finish_crtc_commit+0x187/0x190 [i915] [ 14.299824] [] drm_atomic_helper_commit_planes+0x13c/0x250 [drm_kms_helper] [ 14.299846] [] __intel_set_mode+0xa07/0xcd0 [i915] [ 14.299867] [] intel_crtc_set_config+0x30f/0x650 [i915] [ 14.299877] [] drm_mode_set_config_internal+0x66/0x100 [drm] [ 14.299882] [] restore_fbdev_mode+0xc8/0xf0 [drm_kms_helper] [ 14.299887] [] drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x80 [drm_kms_helper] [ 14.299891] [] drm_fb_helper_set_par+0x22/0x50 [drm_kms_helper] [ 14.299894] [] drm_fb_helper_hotplug_event+0x8f/0xe0 [drm_kms_helper] [ 14.299917] [] intel_fbdev_output_poll_changed+0x1e/0x30 [i915] [ 14.299921] [] drm_kms_helper_hotplug_event+0x2b/0x40 [drm_kms_helper] [ 14.299924] [] output_poll_execute+0x1a1/0x1c0 [drm_kms_helper] [ 14.299927] [] process_one_work+0x158/0x490 [ 14.299928] [] worker_thread+0x73/0x580 [ 14.299930] [] ? rescuer_thread+0x400/0x400 [ 14.299931] [] kthread+0xef/0x110 [ 14.299933] [] ? kthread_create_on_node+0x180/0x180 [ 14.299935] [] ret_from_fork+0x42/0x70 [ 14.299936] [] ? kthread_create_on_node+0x180/0x180 [ 14.299937] ---[ end trace 3d45f659ece5b2b3 ]--- [ 15.099655] Console: switching to colour frame buffer device 240x67 To reproduce: apt-get install ruby git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/setup-local job.yaml # the job file attached in this email bin/run-local job.yaml Thanks, Ying Huang ------------------------------------- lkp@eclists.intel.com https://eclists.intel.com/sympa/info/lkp Unsubscribe by sending email to sympa@eclists.intel.com with subject "Unsubscribe lkp"