Few tests - dmesg-warn/abort - WARNING: CPU: \d+ PID: \d+ at drivers/gpu/drm/drm_vblank.c:\d+ drm_wait_one_vblank, RIP: 0010:drm_wait_one_vblank
<4> [457.272667] i915 0000:00:02.0: vblank not available on crtc 0, ret=-22
<4> [457.272715] WARNING: CPU: 0 PID: 1289 at drivers/gpu/drm/drm_vblank.c:1260 drm_wait_one_vblank+0x19a/0x200
<4> [457.272732] Modules linked in: snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hwdep snd_hda_core snd_pcm vgem drm_shmem_helper i915 prime_numbers ttm drm_buddy drm_display_helper drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops fuse btusb coretemp btrtl btbcm crct10dif_pclmul btintel crc32_pclmul ghash_clmulni_intel bluetooth ecdh_generic ecc lpc_ich cdc_ether usbnet mii video wmi pinctrl_cherryview
<4> [457.273974] CPU: 0 PID: 1289 Comm: kms_hdmi_inject Not tainted 6.1.0-rc2-drmtip_1256-g6923e120f0a6+ #1
<4> [457.273986] Hardware name: GOOGLE Kefka/Kefka, BIOS MrChromebox 02/04/2018
<4> [457.273993] RIP: 0010:drm_wait_one_vblank+0x19a/0x200
<4> [457.274007] Code: ff 48 8b 7b 08 48 8b 5f 50 48 85 db 74 64 e8 bd a6 00 00 45 89 e0 89 e9 48 89 da 48 89 c6 48 c7 c7 e0 5d 32 82 e8 1a 5a 3c 00 <0f> 0b e9 df fe ff ff 48 89 e6 4c 89 f7 e8 84 cd 9c ff 45 85 e4 0f
<4> [457.274015] RSP: 0018:ffffc90000ec7908 EFLAGS: 00010286
<4> [457.274026] RAX: 0000000000000000 RBX: ffff888100bede90 RCX: 0000000000000001
<4> [457.274033] RDX: 0000000080000001 RSI: ffffffff822ca5b5 RDI: 00000000ffffffff
<4> [457.274039] RBP: 0000000000000000 R08: 0000000000000000 R09: c0000000ffff7fff
<4> [457.274045] R10: 0000000000000001 R11: ffffc90000ec77a0 R12: 00000000ffffffea
<4> [457.274051] R13: ffff88810bbc8000 R14: ffff888107565028 R15: ffff8881382ae5f8
<4> [457.274057] FS: 00007f879d1bbc00(0000) GS:ffff88817b800000(0000) knlGS:0000000000000000
<4> [457.274064] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [457.274070] CR2: 00007f1f2c00f900 CR3: 000000010ba92000 CR4: 00000000001006f0
<4> [457.274077] Call Trace:
<4> [457.274084] <TASK>
<4> [457.274100] ? intel_audio_codec_enable+0x8b/0x1f0 [i915]
<4> [457.275569] ilk_audio_codec_enable+0x46/0x300 [i915]
<4> [457.280546] ? lockdep_hardirqs_on+0xbf/0x140
<4> [457.280581] intel_audio_codec_enable+0xf8/0x1f0 [i915]
<4> [457.282460] ? g4x_enable_hdmi+0xa3/0x120 [i915]
<4> [457.283717] chv_hdmi_pre_enable+0x8d/0xd0 [i915]
<4> [457.284917] intel_encoders_pre_enable+0x79/0x90 [i915]
<4> [457.287875] valleyview_crtc_enable+0xab/0x1e0 [i915]
<4> [457.289656] intel_enable_crtc+0x5c/0x90 [i915]
<4> [457.290355] intel_commit_modeset_enables+0x4e/0x80 [i915]
<4> [457.290728] intel_atomic_commit_tail+0x6d5/0xeb0 [i915]
<4> [457.293731] ? intel_atomic_commit+0x37b/0x3f0 [i915]
<4> [457.295249] intel_atomic_commit+0x37b/0x3f0 [i915]
<4> [457.296642] drm_atomic_commit+0x91/0xc0
<4> [457.296661] ? drm_plane_get_damage_clips.cold.7+0x1c/0x1c
<4> [457.296683] drm_atomic_helper_set_config+0x71/0xc0 [drm_kms_helper]
<4> [457.296731] drm_mode_setcrtc+0x1ef/0x740
<4> [457.297921] ? drm_mode_getcrtc+0x190/0x190
<4> [457.297950] drm_ioctl_kernel+0xb2/0x140
<4> [457.297974] drm_ioctl+0x207/0x3d0
<4> [457.297991] ? drm_mode_getcrtc+0x190/0x190
<4> [457.298040] __x64_sys_ioctl+0x71/0xb0
<4> [457.298061] do_syscall_64+0x3a/0x90
<4> [457.298077] entry_SYSCALL_64_after_hwframe+0x63/0xcd
<4> [457.298090] RIP: 0033:0x7f879f94e50b
<4> [457.298101] Code: 0f 1e fa 48 8b 05 85 39 0d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 55 39 0d 00 f7 d8 64 89 01 48
<4> [457.298110] RSP: 002b:00007ffe93b00838 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
<4> [457.298124] RAX: ffffffffffffffda RBX: 00007ffe93b00870 RCX: 00007f879f94e50b
<4> [457.298131] RDX: 00007ffe93b00870 RSI: 00000000c06864a2 RDI: 0000000000000005
<4> [457.298138] RBP: 00000000c06864a2 R08: 0000000000000000 R09: 0000559dac6b2710
<4> [457.298145] R10: 0000000000000000 R11: 0000000000000246 R12: 0000559dac6b2710
<4> [457.298152] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000000
<4> [457.298193] </TASK>
<4> [457.298200] irq event stamp: 153065
<4> [457.298206] hardirqs last enabled at (153071): [<ffffffff81138376>] __up_console_sem+0x66/0x70
<4> [457.298218] hardirqs last disabled at (153076): [<ffffffff8113835b>] __up_console_sem+0x4b/0x70
<4> [457.298226] softirqs last enabled at (152908): [<ffffffff81e0031e>] __do_softirq+0x31e/0x48a
<4> [457.298235] softirqs last disabled at (152901): [<ffffffff810c1b58>] irq_exit_rcu+0xb8/0xe0
<4> [457.298246] ---[ end trace 0000000000000000 ]---