Bug 111428

https://intel-gfx-ci.01.org/tree/drm-tip/IGT_5139/fi-tgl-u/igt@runner@aborted.html

Aborting.
Previous test: nothing
Next test: core_auth (basic-auth)

Kernel badly tainted (0x200) (check dmesg for details):
	(0x200) TAINT_WARN: WARN_ON has happened.


From https://intel-gfx-ci.01.org/tree/drm-tip/IGT_5139/fi-tgl-u/boot0.log:

<7>[   12.162267] [drm:intel_disable_pipe [i915]] disabling pipe A
<4>[   12.178171] ------------[ cut here ]------------
<4>[   12.178178] Unclaimed read from register 0x64040
<4>[   12.178263] WARNING: CPU: 7 PID: 7 at drivers/gpu/drm/i915/intel_uncore.c:1101 __unclaimed_reg_debug+0x40/0x50 [i915]
<4>[   12.178266] Modules linked in: i915 x86_pkg_temp_thermal coretemp crct10dif_pclmul ax88179_178a usbnet crc32_pclmul mii ghash_clmulni_intel prime_numbers
<4>[   12.178280] CPU: 7 PID: 7 Comm: kworker/u16:0 Tainted: G        W         5.3.0-rc5-CI-CI_DRM_6734+ #1
<4>[   12.178283] Hardware name: Intel Corporation Tiger Lake Client Platform/TigerLake U DDR4 SODIMM RVP, BIOS TGLSFWI1.R00.2271.A00.1907010753 07/01/2019
<4>[   12.178290] Workqueue: events_unbound async_run_entry_fn
<4>[   12.178346] RIP: 0010:__unclaimed_reg_debug+0x40/0x50 [i915]
<4>[   12.178349] Code: 74 05 5b 5d 41 5c c3 45 84 e4 48 c7 c0 ea ef 28 a0 48 c7 c6 e0 ef 28 a0 48 0f 44 f0 89 ea 48 c7 c7 f3 ef 28 a0 e8 60 f1 fe e0 <0f> 0b 83 2d d7 8d 26 00 01 5b 5d 41 5c c3 66 90 41 57 41 56 41 55
<4>[   12.178351] RSP: 0018:ffffc900000df850 EFLAGS: 00010086
<4>[   12.178354] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000003
<4>[   12.178356] RDX: 0000000080000003 RSI: 0000000000000000 RDI: 00000000ffffffff
<4>[   12.178358] RBP: 0000000000064040 R08: 0000000000000000 R09: 0000000000000001
<4>[   12.178360] R10: 0000000041cfa1c1 R11: 000000005f7953ad R12: 0000000000000001
<4>[   12.178362] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000206
<4>[   12.178364] FS:  0000000000000000(0000) GS:ffff8884a0780000(0000) knlGS:0000000000000000
<4>[   12.178366] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[   12.178368] CR2: 000055eb29467818 CR3: 00000004956a8001 CR4: 0000000000760ee0
<4>[   12.178370] PKRU: 55555554
<4>[   12.178372] Call Trace:
<4>[   12.178428]  gen11_fwtable_read32+0x246/0x320 [i915]
<4>[   12.178520]  intel_disable_ddi_buf+0x86/0x140 [i915]
<4>[   12.178609]  intel_ddi_post_disable+0x10c/0x2a0 [i915]
<4>[   12.178697]  intel_encoders_post_disable.isra.23+0x61/0x80 [i915]
<4>[   12.178782]  haswell_crtc_disable+0xab/0x120 [i915]
<4>[   12.178867]  intel_atomic_commit_tail+0xa0b/0x1520 [i915]
<4>[   12.178967]  intel_atomic_commit+0x273/0x2f0 [i915]
<4>[   12.178981]  drm_client_modeset_commit_atomic+0x18b/0x220
<4>[   12.179004]  drm_client_modeset_commit_force+0x52/0x1b0
<4>[   12.179015]  drm_fb_helper_restore_fbdev_mode_unlocked+0x42/0x90
<4>[   12.179020]  drm_fb_helper_set_par+0x24/0x50
<4>[   12.179104]  intel_fbdev_set_par+0x11/0x30 [i915]
<4>[   12.179110]  ? con_is_visible+0x22/0x50
<4>[   12.179116]  fbcon_init+0x37c/0x620
<4>[   12.179127]  visual_init+0xc9/0x130
<4>[   12.179132]  do_bind_con_driver+0x200/0x420
<4>[   12.179145]  do_take_over_console+0x71/0x1a0
<4>[   12.179152]  do_fbcon_takeover+0x53/0xb0
<4>[   12.179158]  register_framebuffer+0x229/0x330
<4>[   12.179172]  __drm_fb_helper_initial_config_and_unlock+0x324/0x5c0
<4>[   12.179265]  intel_fbdev_initial_config+0xf/0x20 [i915]
<4>[   12.179270]  async_run_entry_fn+0x34/0x160
<4>[   12.179277]  process_one_work+0x245/0x610
<4>[   12.179291]  worker_thread+0x37/0x380
<4>[   12.179298]  ? process_one_work+0x610/0x610
<4>[   12.179301]  kthread+0x119/0x130
<4>[   12.179306]  ? kthread_park+0xa0/0xa0
<4>[   12.179315]  ret_from_fork+0x24/0x50
<4>[   12.179334] irq event stamp: 26344
<4>[   12.179338] hardirqs last  enabled at (26343): [<ffffffff819cdd0c>] _raw_spin_unlock_irqrestore+0x4c/0x60
<4>[   12.179342] hardirqs last disabled at (26344): [<ffffffff819cdb7d>] _raw_spin_lock_irqsave+0xd/0x50
<4>[   12.179345] softirqs last  enabled at (26276): [<ffffffff81c0033e>] __do_softirq+0x33e/0x4ae
<4>[   12.179349] softirqs last disabled at (26267): [<ffffffff810b8169>] irq_exit+0xa9/0xc0
<4>[   12.179412] WARNING: CPU: 7 PID: 7 at drivers/gpu/drm/i915/intel_uncore.c:1101 __unclaimed_reg_debug+0x40/0x50 [i915]
<4>[   12.179415] ---[ end trace 002a6c22bd4b103c ]---