FYI, we noticed the below changes on

git://people.freedesktop.org/~mlankhorst/linux rework-page-flip
commit e1eaca94bb1677ae1687589371da6557ac75ca35 ("drm/i915: Power refcount checking.")


<5>[   21.459466] Key type id_legacy registered
<5>[   30.011756] random: nonblocking pool is initialized
<4>[   49.945197] ------------[ cut here ]------------
<4>[   49.952010] WARNING: CPU: 0 PID: 583 at drivers/gpu/drm/i915/intel_display.c:13185 check_power_refcount+0x20e/0x340 [i915]()
<4>[   49.967414] Refcount on domain TRANSCODER_EDP is 1, should be 0
<4>[   49.974149] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver btrfs xor raid6_pq sg sd_mod snd_hda_codec_hdmi x86_pkg_temp_thermal coretemp kvm_intel kvm irqbypass crct10dif_pclmul snd_hda_intel crc32_pclmul crc32c_intel snd_hda_codec ppdev snd_hda_core snd_hwdep snd_pcm aesni_intel lrw gf128mul glue_helper snd_timer ablk_helper cryptd serio_raw pcspkr ahci libahci i915 drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops libata shpchp snd soundcore drm winbond_cir rc_core i2c_hid parport_pc sdhci_acpi video sdhci dw_dmac dw_dmac_core mmc_core parport i2c_designware_platform i2c_designware_core spi_pxa2xx_platform acpi_pad
<4>[   50.039801] CPU: 0 PID: 583 Comm: kms_flip Not tainted 4.4.0-rc6-00750-ge1eaca9 #1
<4>[   50.048391] Hardware name: Intel Corporation Broadwell Client platform/WhiteTip Mountain 1, BIOS BDW-E1R1.86C.0120.R00.1504020241 04/02/2015
<47>
[   50.048800] systemd-journald[123]: Compressed data object 650 -> 484
<4>[   50.069910]  ffffffffa03078c8 ffff88007a723a90 ffffffff81410e22 ffff88007a723ad8
<4>[   50.078345]  ffff88007a723ac8 ffffffff81078cc6 ffff88007a723b58 ffff880136c00000
<4>[   50.086778]  0000000000000009 0000000008000209 0000000000000001 ffff88007a723b28
<4>[   50.095215] Call Trace:
<4>[   50.097994]  [<ffffffff81410e22>] dump_stack+0x4b/0x69
<4>[   50.103832]  [<ffffffff81078cc6>] warn_slowpath_common+0x86/0xc0
<4>[   50.110649]  [<ffffffff81078d4c>] warn_slowpath_fmt+0x4c/0x50
<4>[   50.117190]  [<ffffffffa02a1c9e>] check_power_refcount+0x20e/0x340 [i915]
<4>[   50.124912]  [<ffffffffa02a29e7>] intel_atomic_commit+0xc17/0x1420 [i915]
<4>[   50.132621]  [<ffffffff810bc1c0>] ? wait_woken+0xb0/0xb0
<4>[   50.138666]  [<ffffffffa01b3c27>] drm_atomic_commit+0x37/0x60 [drm]
<4>[   50.145787]  [<ffffffffa0148147>] drm_atomic_helper_set_config+0x77/0xb0 [drm_kms_helper]
<4>[   50.155068]  [<ffffffffa01a38f2>] drm_mode_set_config_internal+0x62/0x100 [drm]
<4>[   50.163374]  [<ffffffffa01a7b69>] drm_mode_setcrtc+0x189/0x4f0 [drm]
<4>[   50.170591]  [<ffffffffa0199862>] drm_ioctl+0x142/0x590 [drm]
<4>[   50.177112]  [<ffffffff81202f05>] ? file_update_time+0xa5/0xf0
<4>[   50.183743]  [<ffffffffa01a79e0>] ? drm_mode_setplane+0x1b0/0x1b0 [drm]
<4>[   50.191252]  [<ffffffff813a85dc>] ? selinux_file_ioctl+0xfc/0x1c0
<4>[   50.198169]  [<ffffffff811fbe61>] do_vfs_ioctl+0x301/0x560
<4>[   50.204393]  [<ffffffff813a1203>] ? security_file_ioctl+0x43/0x60
<4>[   50.211310]  [<ffffffff811fc139>] SyS_ioctl+0x79/0x90
<4>[   50.217046]  [<ffffffff81003c15>] ? syscall_return_slowpath+0xf5/0x160
<4>[   50.224454]  [<ffffffff818c732e>] entry_SYSCALL_64_fastpath+0x12/0x71
<4>[   50.231763] ---[ end trace d1359a8bc09246d7 ]---
<4>[   75.526359] ------------[ cut here ]------------


To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml



Thanks,
Kernel Test Robot