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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@kms_* - dmesg-warn - WARNING: CPU: 4 PID: 1734 at drivers/gpu/drm/drm_vblank.c:614 drm_calc_vbltimestamp_from_scanoutpos+0x13e/0x2f0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105185#c10">Comment # 10</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@kms_* - dmesg-warn - WARNING: CPU: 4 PID: 1734 at drivers/gpu/drm/drm_vblank.c:614 drm_calc_vbltimestamp_from_scanoutpos+0x13e/0x2f0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105185">bug 105185</a>
from <span class="vcard"><a class="email" href="mailto:marta.lofstedt@intel.com" title="Marta Löfstedt <marta.lofstedt@intel.com>"> <span class="fn">Marta Löfstedt</span></a>
</span></b>
<pre><a href="https://intel-gfx-ci.01.org/tree/drm-tip/IGT_4306/shard-snb7/igt@kms_chv_cursor_fail@pipe-b-64x64-top-edge.html">https://intel-gfx-ci.01.org/tree/drm-tip/IGT_4306/shard-snb7/igt@kms_chv_cursor_fail@pipe-b-64x64-top-edge.html</a>
<7>[ 106.473273] [drm:intel_disable_pipe [i915]] disabling pipe B
<4>[ 106.473349] WARNING: CPU: 4 PID: 3250 at drivers/gpu/drm/drm_vblank.c:614
drm_calc_vbltimestamp_from_scanoutpos+0x13e/0x2f0
<4>[ 106.473368] Modules linked in: vgem snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic i915 x86_pkg_temp_thermal
intel_powerclamp coretemp crct10dif_pclmul snd_hda_intel crc32_pclmul
ghash_clmulni_intel snd_hda_codec snd_hwdep snd_hda_core broadcom bcm_phy_lib
snd_pcm tg3 mei_me lpc_ich mei prime_numbers
<4>[ 106.473426] CPU: 4 PID: 3250 Comm: kms_chv_cursor_ Tainted: G U
4.16.0-rc2-CI-CI_DRM_3838+ #1
<4>[ 106.473429] Hardware name: Dell Inc. XPS 8300 /0Y2MRG, BIOS A06
10/17/2011
<4>[ 106.473433] RIP: 0010:drm_calc_vbltimestamp_from_scanoutpos+0x13e/0x2f0
<4>[ 106.473436] RSP: 0018:ffff88022fb03d10 EFLAGS: 00010086
<4>[ 106.473441] RAX: ffffffffa04c6d20 RBX: ffff88020ee90000 RCX:
0000000000000001
<4>[ 106.473444] RDX: ffffffff820e7e80 RSI: 0000000000000001 RDI:
ffffffff82068da2
<4>[ 106.473446] RBP: ffff88022fb03d70 R08: 0000000000000000 R09:
ffffffff815d2780
<4>[ 106.473449] R10: 0000000000000000 R11: ffffffffa0396ca0 R12:
0000000000000001
<4>[ 106.473452] R13: ffff88021832c138 R14: ffff88021832c460 R15:
0000000000000000
<4>[ 106.473455] FS: 00007f4800810a40(0000) GS:ffff88022fb00000(0000)
knlGS:0000000000000000
<4>[ 106.473458] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[ 106.473461] CR2: 0000561e912a3858 CR3: 000000021281e005 CR4:
00000000000606e0
<4>[ 106.473464] Call Trace:
<4>[ 106.473467] <IRQ>
<4>[ 106.473484] drm_get_last_vbltimestamp+0x36/0x50
<4>[ 106.473490] drm_update_vblank_count+0x64/0x240
<4>[ 106.473503] drm_crtc_accurate_vblank_count+0x41/0x90
<4>[ 106.473545] display_pipe_crc_irq_handler+0x176/0x220 [i915]
<4>[ 106.473595] i9xx_pipe_crc_irq_handler+0xfe/0x150 [i915]
<4>[ 106.473639] ironlake_irq_handler+0x618/0xa30 [i915]
<4>[ 106.473655] __handle_irq_event_percpu+0x3c/0x340
<4>[ 106.473667] handle_irq_event_percpu+0x1b/0x50
<4>[ 106.473674] handle_irq_event+0x2f/0x50
<4>[ 106.473681] handle_edge_irq+0xe4/0x1b0
<4>[ 106.473689] handle_irq+0x11/0x20
<4>[ 106.473693] do_IRQ+0x5e/0x120
<4>[ 106.473704] common_interrupt+0x84/0x84
<4>[ 106.473708] </IRQ>
<4>[ 106.473713] RIP: 0010:debug_object_init_on_stack+0x0/0x20
<4>[ 106.473716] RSP: 0018:ffffc900005ef940 EFLAGS: 00000202 ORIG_RAX:
ffffffffffffffde
<4>[ 106.473721] RAX: 00000018c774b4a4 RBX: ffffc900005ef9b8 RCX:
0000000000000001
<4>[ 106.473724] RDX: 0000000000000000 RSI: ffffffff82249480 RDI:
ffffc900005ef948
<4>[ 106.473727] RBP: 0000000000000000 R08: ffff88021945d8e0 R09:
00000000f7096856
<4>[ 106.473730] R10: 0000000000000000 R11: 0000000000000000 R12:
0000000000002710
<4>[ 106.473732] R13: 0000000000000001 R14: 0000000000000014 R15:
000000000000000a
<4>[ 106.473757] schedule_hrtimeout_range_clock+0x5c/0x140
<4>[ 106.473762] ? ktime_get+0xde/0x100
<4>[ 106.473769] ? trace_hardirqs_on_caller+0xde/0x1c0
<4>[ 106.473774] ? ktime_get+0x84/0x100
<4>[ 106.473780] ? usleep_range+0x3b/0x70
<4>[ 106.473785] usleep_range+0x57/0x70
<4>[ 106.473836] __intel_wait_for_register+0xf5/0x160 [i915]
<4>[ 106.473891] intel_disable_pipe+0x113/0x170 [i915]
<4>[ 106.473942] ironlake_crtc_disable+0x6a/0x6d0 [i915]
<4>[ 106.473948] ? __mutex_unlock_slowpath+0x38/0x270
<4>[ 106.474001] intel_atomic_commit_tail+0x1ec/0xd20 [i915]
<4>[ 106.474063] intel_atomic_commit+0x256/0x330 [i915]
<4>[ 106.474075] restore_fbdev_mode_atomic+0x199/0x1f0
<4>[ 106.474103] drm_fb_helper_restore_fbdev_mode_unlocked+0x42/0x90
<4>[ 106.474110] drm_fb_helper_set_par+0x24/0x50
<4>[ 106.474157] intel_fbdev_set_par+0x11/0x60 [i915]
<4>[ 106.474165] fbcon_init+0x594/0x620
<4>[ 106.474180] visual_init+0xca/0x120
<4>[ 106.474187] do_bind_con_driver+0x1bb/0x3a0
<4>[ 106.474204] do_unbind_con_driver+0x1a1/0x210
<4>[ 106.474222] store_bind+0xb8/0x1b0
<4>[ 106.474234] kernfs_fop_write+0xfe/0x180
<4>[ 106.474244] __vfs_write+0x1e/0x130
<4>[ 106.474251] ? rcu_read_lock_sched_held+0x6f/0x80
<4>[ 106.474255] ? rcu_sync_lockdep_assert+0x25/0x50
<4>[ 106.474260] ? __sb_start_write+0xd9/0x1f0
<4>[ 106.474264] ? __sb_start_write+0xf3/0x1f0
<4>[ 106.474274] vfs_write+0xbd/0x1b0
<4>[ 106.474283] SyS_write+0x40/0xa0
<4>[ 106.474293] do_syscall_64+0x65/0x1a0
<4>[ 106.474301] entry_SYSCALL_64_after_hwframe+0x42/0xb7
<4>[ 106.474304] RIP: 0033:0x7f47fece8670
<4>[ 106.474307] RSP: 002b:00007fff8cb10868 EFLAGS: 00000246 ORIG_RAX:
0000000000000001
<4>[ 106.474312] RAX: ffffffffffffffda RBX: 0000561e9129b820 RCX:
00007f47fece8670
<4>[ 106.474315] RDX: 0000000000000002 RSI: 0000561e904a9df8 RDI:
0000000000000008
<4>[ 106.474318] RBP: 00007fff8cb10890 R08: 0000561e9129b893 R09:
0000000000000020
<4>[ 106.474320] R10: 0000000000000073 R11: 0000000000000246 R12:
0000561e904a9ddc
<4>[ 106.474323] R13: 0000561e904a9da6 R14: 0000561e9129b893 R15:
0000561e904a9de2
<4>[ 106.474346] Code: e1 48 c7 c2 80 7e 0e 82 be 01 00 00 00 48 c7 c7 a2 8d
06 82 e8 64 ec ff ff 48 8b 83 c8 07 00 00 48 83 78 28 00 0f 84 e2 fe ff ff <0f>
0b 45 31 ed e9 db fe ff ff 41 b8 d3 4d 62 10 89 c8 6a 03 41
<4>[ 106.474483] ---[ end trace ead0eae4bce6b4b6 ]---</pre>
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