Bug 111917

https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_3547/fi-bdw-gvtdvm/igt@runner@aborted.html
Out	
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.

Boot log
 
10.323801] trying to change cdclk frequency with cdclk not enabled
<4>[   10.323884] WARNING: CPU: 0 PID: 146 at drivers/gpu/drm/i915/display/intel_cdclk.c:727 bdw_set_cdclk+0x37d/0x3b0 [i915]
<4>[   10.323886] Modules linked in: i915 crct10dif_pclmul crc32_pclmul ghash_clmulni_intel prime_numbers e1000(+) i2c_piix4
<4>[   10.323895] CPU: 0 PID: 146 Comm: kworker/u2:2 Not tainted 5.4.0-rc2-CI-CI_DRM_7021+ #1
<4>[   10.323897] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.10.1-0-g8891697-prebuilt.qemu-project.org 04/01/2014
<4>[   10.323901] Workqueue: events_unbound async_run_entry_fn
<4>[   10.323966] RIP: 0010:bdw_set_cdclk+0x37d/0x3b0 [i915]
<4>[   10.323968] Code: e8 58 d9 f7 e0 0f 0b 8b 04 24 0d 00 00 00 08 e9 01 fe ff ff 0d 00 00 00 04 e9 f7 fd ff ff 48 c7 c7 d8 07 23 a0 e8 33 d9 f7 e0 <0f> 0b 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 83 c4 10 48
<4>[   10.323970] RSP: 0018:ffffc900006db938 EFLAGS: 00010282
<4>[   10.323972] RAX: 0000000000000000 RBX: ffff88806f300000 RCX: 0000000000000001
<4>[   10.323974] RDX: 0000000080000001 RSI: ffff88807b9e3190 RDI: 00000000ffffffff
<4>[   10.323976] RBP: ffff88806f300d80 R08: ffff88807b9e3190 R09: 0000000000000000
<4>[   10.323977] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffff
<4>[   10.323979] R13: ffff88806bef22a8 R14: ffffffffffffffc8 R15: ffff888070612e98
<4>[   10.323981] FS:  0000000000000000(0000) GS:ffff88807da00000(0000) knlGS:0000000000000000
<4>[   10.323985] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[   10.323986] CR2: 000055668261fd80 CR3: 0000000078900005 CR4: 00000000003606f0
<4>[   10.323988] Call Trace:
<4>[   10.324059]  intel_set_cdclk+0x49/0x110 [i915]
<4>[   10.324126]  intel_atomic_commit_tail+0xcda/0x1540 [i915]
<4>[   10.324132]  ? flush_workqueue+0x236/0x530
<4>[   10.324134]  ? queue_work_on+0x33/0x70
<4>[   10.324213]  intel_atomic_commit+0x273/0x2f0 [i915]
<4>[   10.324221]  drm_client_modeset_commit_atomic+0x18b/0x210
<4>[   10.324238]  drm_client_modeset_commit_force+0x52/0x1a0
<4>[   10.324244]  drm_fb_helper_restore_fbdev_mode_unlocked+0x42/0x90
<4>[   10.324248]  drm_fb_helper_set_par+0x24/0x50
<4>[   10.324312]  intel_fbdev_set_par+0x11/0x30 [i915]
<4>[   10.324316]  ? con_is_visible+0x25/0x50
<4>[   10.324320]  fbcon_init+0x37e/0x610
<4>[   10.324328]  visual_init+0xc9/0x130
<4>[   10.324333]  do_bind_con_driver+0x200/0x410
<4>[   10.324344]  do_take_over_console+0x71/0x190
<4>[   10.324351]  do_fbcon_takeover+0x53/0xb0
<4>[   10.324353]  register_framebuffer+0x229/0x330
<4>[   10.324363]  __drm_fb_helper_initial_config_and_unlock+0x324/0x5a0
<4>[   10.324435]  intel_fbdev_initial_config+0xf/0x20 [i915]
<4>[   10.324450]  async_run_entry_fn+0x34/0x160
<4>[   10.324455]  process_one_work+0x26a/0x620
<4>[   10.324465]  worker_thread+0x37/0x380
<4>[   10.324471]  ? process_one_work+0x620/0x620
<4>[   10.324474]  kthread+0x119/0x130
<4>[   10.324478]  ? kthread_park+0x80/0x80
<4>[   10.324485]  ret_from_fork+0x3a/0x50
<4>[   10.324508] irq event stamp: 26736
<4>[   10.324511] hardirqs last  enabled at (26735): [<ffffffff8112aa45>] vprintk_emit+0x315/0x340
<4>[   10.324514] hardirqs last disabled at (26736): [<ffffffff81001bba>] trace_hardirqs_off_thunk+0x1a/0x20
<4>[   10.324516] softirqs last  enabled at (26636): [<ffffffff81c00385>] __do_softirq+0x385/0x47f
<4>[   10.324519] softirqs last disabled at (26629): [<ffffffff810b7eaa>] irq_exit+0xba/0xc0
<4>[   10.324520] ---[ end trace 406edd76fad566e3 ]---