FYI, we noticed the below changes on

git://people.freedesktop.org/~mlankhorst/linux rework-page-flip
commit 6510a406d296df7399956b723bd4b81ee481f6c0 ("drm/i915: Rework intel_crtc_page_flip to be almost atomic.")


<5>[   15.546422] Key type id_resolver registered
<5>[   15.546664] Key type id_legacy registered
<4>[   81.385954] ------------[ cut here ]------------
<4>[   81.386235] WARNING: CPU: 3 PID: 637 at drivers/gpu/drm/i915/intel_display.c:3916 intel_atomic_commit+0xf20/0xf30 [i915]()
<4>[   81.386875] Removing stuck page flip
<4>[   81.387067] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic sg sd_mod x86_pkg_temp_thermal coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel ahci libahci firewire_ohci ppdev aesni_intel lrw gf128mul glue_helper ablk_helper cryptd serio_raw pcspkr libata snd_hda_intel firewire_core crc_itu_t snd_hda_codec i915 snd_hda_core snd_hwdep video snd_pcm snd_timer drm_kms_helper syscopyarea sysfillrect sysimgblt snd fb_sys_fops soundcore shpchp drm parport_pc nuvoton_cir parport rc_core
<4>[   81.390213] CPU: 3 PID: 637 Comm: kms_flip Not tainted 4.4.0-rc4-00525-g6510a40 #1
<4>[   81.390601] Hardware name:                  /DH67GD, BIOS BLH6710H.86A.0132.2011.1007.1505 10/07/2011
<4>[   81.391075]  ffffffffa02b07e0 ffff88021d4e3b88 ffffffff81410ca2 ffff88021d4e3bd0
<4>[   81.391500]  ffff88021d4e3bc0 ffffffff81078cc6 ffff880204a5e9a8 ffff88021d3a8500
<4>[   81.391917]  ffff8801e6dfa000 ffff8801e6fa3a00 0000000000000000 ffff88021d4e3c20
<4>[   81.392341] Call Trace:
<4>[   81.392479]  [<ffffffff81410ca2>] dump_stack+0x4b/0x69
<4>[   81.392753]  [<ffffffff81078cc6>] warn_slowpath_common+0x86/0xc0
<4>[   81.393058]  [<ffffffff81078d4c>] warn_slowpath_fmt+0x4c/0x50
<4>[   81.393360]  [<ffffffff810bc117>] ? finish_wait+0x67/0x80
<4>[   81.393660]  [<ffffffffa024ba40>] intel_atomic_commit+0xf20/0xf30 [i915]
<4>[   81.394022]  [<ffffffffa00aea5c>] ? drm_atomic_check_only+0x14c/0x610 [drm]
<4>[   81.394386]  [<ffffffff810bc2c0>] ? wait_woken+0xb0/0xb0
<4>[   81.394674]  [<ffffffffa00aef57>] drm_atomic_commit+0x37/0x60 [drm]
<4>[   81.395008]  [<ffffffffa014e18e>] drm_atomic_helper_connector_dpms+0xee/0x1a0 [drm_kms_helper]
<4>[   81.395463]  [<ffffffffa00a3b54>] drm_mode_obj_set_property_ioctl+0x234/0x240 [drm]
<4>[   81.395868]  [<ffffffffa00a3b90>] drm_mode_connector_property_set_ioctl+0x30/0x40 [drm]
<4>[   81.396287]  [<ffffffffa0094862>] drm_ioctl+0x142/0x590 [drm]
<4>[   81.396593]  [<ffffffffa00a3b60>] ? drm_mode_obj_set_property_ioctl+0x240/0x240 [drm]
<4>[   81.397003]  [<ffffffff813a848c>] ? selinux_file_ioctl+0xfc/0x1c0
<4>[   81.397323]  [<ffffffff811fbdb1>] do_vfs_ioctl+0x301/0x560
<4>[   81.397608]  [<ffffffff8109d7e2>] ? __might_sleep+0x52/0xb0
<4>[   81.397898]  [<ffffffff813a10b3>] ? security_file_ioctl+0x43/0x60
<4>[   81.398218]  [<ffffffff811fc089>] SyS_ioctl+0x79/0x90
<4>[   81.398480]  [<ffffffff818c6a2e>] entry_SYSCALL_64_fastpath+0x12/0x71
<4>[   81.398812] ---[ end trace 872a05a25a529b20 ]---
<4>[   81.398812] ---[ end trace 872a05a25a529b20 ]---


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,
Ying Huang