KMS tests - dmesg-warn/dmesg-fail - WARN_ON(drm_crtc_vblank_get(crtc) == 0)
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7882/re-tgl-y/igt@kms_panel_fitting@atomic-fastset.html#dmesg-warnings1112
<4> [803.512943] WARN_ON(drm_crtc_vblank_get(crtc) == 0)
<4> [803.513097] WARNING: CPU: 6 PID: 1000 at drivers/gpu/drm/i915/display/intel_display.c:1312 assert_vblank_disabled+0x39/0x40 [i915]
<4> [803.513101] Modules linked in: snd_hda_codec_hdmi mei_hdcp x86_pkg_temp_thermal coretemp i915 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel cdc_ether usbnet mei_me snd_hda_intel snd_intel_dspcfg mii mei snd_hda_codec snd_hwdep snd_hda_core snd_pcm e1000e ptp pps_core intel_lpss_pci prime_numbers
<4> [803.513128] CPU: 6 PID: 1000 Comm: kms_panel_fitti Tainted: G U W 5.5.0-CI-CI_DRM_7882+ #1
<4> [803.513131] Hardware name: Intel Corporation Tiger Lake Client Platform/TigerLake Y LPDDR4x T4 Crb, BIOS TGLSFWI1.R00.2457.A16.1912270059 12/27/2019
<4> [803.513216] RIP: 0010:assert_vblank_disabled+0x39/0x40 [i915]
<4> [803.513220] Code: 80 3d e7 8d 1d 00 00 48 c7 c6 58 14 3f a0 48 c7 c7 1b a7 41 a0 75 0e e8 25 ee 3c e1 48 89 df 5b e9 5c 18 3d e1 e8 c7 c8 dc e0 <0f> 0b eb ee 0f 1f 00 41 55 41 54 41 89 d4 55 48 8d af 88 0d 00 00
<4> [803.513224] RSP: 0018:ffffc90000537918 EFLAGS: 00010286
<4> [803.513228] RAX: 0000000000000000 RBX: ffff888377c72000 RCX: 0000000000000006
<4> [803.513231] RDX: 00000000000016f3 RSI: ffff88839df9c8f8 RDI: ffffffff82373181
<4> [803.513235] RBP: ffff88838ce04000 R08: ffff88839df9c8f8 R09: 0000000000000000
<4> [803.513238] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88838b88b7b8
<4> [803.513241] R13: ffff88838ce04000 R14: ffff888377c8a000 R15: 00000000fffffffd
<4> [803.513247] FS: 00007fe6e24a9e40(0000) GS:ffff8883a4100000(0000) knlGS:0000000000000000
<4> [803.513250] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [803.513253] CR2: 00007f766a5bef13 CR3: 00000003780c0005 CR4: 0000000000760ee0
<4> [803.513256] PKRU: 55555554
<4> [803.513259] Call Trace:
<4> [803.513354] intel_crtc_vblank_on+0x10/0x40 [i915]
<4> [803.513445] intel_enable_ddi+0x44/0x3c0 [i915]
<4> [803.513542] intel_encoders_enable+0x78/0xa0 [i915]
<4> [803.513632] hsw_crtc_enable+0x3f7/0x580 [i915]
<4> [803.513726] intel_update_crtc+0x1aa/0x1d0 [i915]
<4> [803.513818] skl_commit_modeset_enables+0x5a3/0x600 [i915]
<4> [803.513830] ? mark_held_locks+0x49/0x70
<4> [803.513919] intel_atomic_commit_tail+0x30d/0x1480 [i915]
<4> [803.513927] ? lockdep_hardirqs_on+0xe3/0x1c0
<4> [803.514025] intel_atomic_commit+0x312/0x390 [i915]
<4> [803.514040] drm_mode_atomic_ioctl+0x86f/0x980
<4> [803.514065] ? drm_atomic_set_property+0x9b0/0x9b0
<4> [803.514073] drm_ioctl_kernel+0xad/0xf0
<4> [803.514083] drm_ioctl+0x2e1/0x390
<4> [803.514092] ? drm_atomic_set_property+0x9b0/0x9b0
<4> [803.514105] ? __lock_acquire+0x460/0x15d0
<4> [803.514119] do_vfs_ioctl+0x9c/0x730
<4> [803.514124] ? find_held_lock+0x2d/0x90
<4> [803.514136] ? __task_pid_nr_ns+0xbc/0x1f0
<4> [803.514147] ksys_ioctl+0x35/0x60
<4> [803.514156] __x64_sys_ioctl+0x11/0x20
<4> [803.514163] do_syscall_64+0x4f/0x220
<4> [803.514175] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [803.514180] RIP: 0033:0x7fe6e1d4d5d7
<4> [803.514185] Code: b3 66 90 48 8b 05 b1 48 2d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 81 48 2d 00 f7 d8 64 89 01 48
<4> [803.514188] RSP: 002b:00007ffe24ab7f38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
<4> [803.514193] RAX: ffffffffffffffda RBX: 0000560c52b90ee0 RCX: 00007fe6e1d4d5d7
<4> [803.514196] RDX: 00007ffe24ab7f90 RSI: 00000000c03864bc RDI: 0000000000000005
<4> [803.514199] RBP: 00007ffe24ab7f90 R08: 0000560c52b93890 R09: 0000000000000156
<4> [803.514202] R10: 000000000000002e R11: 0000000000000246 R12: 00000000c03864bc
<4> [803.514205] R13: 0000000000000005 R14: 0000000000000000 R15: 0000000000000400
<4> [803.514222] irq event stamp: 346304
<4> [803.514227] hardirqs last enabled at (346303): [<ffffffff81001c84>] trace_hardirqs_on_thunk+0x1a/0x1c
<4> [803.514232] hardirqs last disabled at (346304): [<ffffffff81001ca0>] trace_hardirqs_off_thunk+0x1a/0x1c
<4> [803.514237] softirqs last enabled at (346058): [<ffffffff81e00385>] __do_softirq+0x385/0x47f
<4> [803.514243] softirqs last disabled at (346051): [<ffffffff810ba15a>] irq_exit+0xba/0xc0