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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@kms_chv_cursor_fail@pipe-b* - 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#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@kms_chv_cursor_fail@pipe-b* - 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/CI_DRM_3833/shard-glkb4/igt@kms_plane_lowres@pipe-c-tiling-yf.html">https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3833/shard-glkb4/igt@kms_plane_lowres@pipe-c-tiling-yf.html</a>
<7>[ 68.111539] [drm:intel_disable_pipe [i915]] disabling pipe C
<4>[ 68.111665] WARNING: CPU: 1 PID: 1558 at drivers/gpu/drm/drm_vblank.c:614
drm_calc_vbltimestamp_from_scanoutpos+0x13e/0x2f0
<4>[ 68.111717] Modules linked in: snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_codec_generic x86_pkg_temp_thermal intel_powerclamp coretemp
crct10dif_pclmul i915 crc32_pclmul ghash_clmulni_intel snd_hda_intel
snd_hda_codec snd_hwdep snd_hda_core snd_pcm r8169 mii mei_me mei prime_numbers
i2c_hid pinctrl_geminilake pinctrl_intel
<4>[ 68.111872] CPU: 1 PID: 1558 Comm: kms_plane_lowre Tainted: G U
4.16.0-rc2-CI-CI_DRM_3833+ #1
<4>[ 68.111878] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05),
BIOS GELKRVPA.X64.0062.B30.1708222146 08/22/2017
<4>[ 68.111889] RIP: 0010:drm_calc_vbltimestamp_from_scanoutpos+0x13e/0x2f0
<4>[ 68.111896] RSP: 0018:ffff88017fc83d38 EFLAGS: 00010082
<4>[ 68.111908] RAX: ffffffffa0238d20 RBX: ffff880166410000 RCX:
0000000000000002
<4>[ 68.111914] RDX: ffffffff820e7e80 RSI: 0000000000000001 RDI:
ffffffff82068da2
<4>[ 68.111920] RBP: ffff88017fc83d98 R08: 0000000000000000 R09:
ffffffff815d2780
<4>[ 68.111927] R10: 0000000000000000 R11: ffffffffa0108ca0 R12:
0000000000000002
<4>[ 68.111933] R13: ffff880165e0ae98 R14: ffff880165e0b3c8 R15:
0000000000000000
<4>[ 68.111940] FS: 00007fd792298a40(0000) GS:ffff88017fc80000(0000)
knlGS:0000000000000000
<4>[ 68.111947] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[ 68.111956] CR2: 00007f9b8e949080 CR3: 0000000176e24000 CR4:
0000000000340ee0
<4>[ 68.111962] Call Trace:
<4>[ 68.111971] <IRQ>
<4>[ 68.111999] drm_get_last_vbltimestamp+0x36/0x50
<4>[ 68.112011] drm_update_vblank_count+0x64/0x240
<4>[ 68.112031] drm_crtc_accurate_vblank_count+0x41/0x90
<4>[ 68.112119] display_pipe_crc_irq_handler+0x176/0x220 [i915]
<4>[ 68.112221] hsw_pipe_crc_irq_handler+0x46/0x50 [i915]
<4>[ 68.112308] gen8_irq_handler+0x389/0x630 [i915]
<4>[ 68.112332] __handle_irq_event_percpu+0x3c/0x340
<4>[ 68.112352] handle_irq_event_percpu+0x1b/0x50
<4>[ 68.112363] handle_irq_event+0x2f/0x50
<4>[ 68.112375] handle_edge_irq+0xe4/0x1b0
<4>[ 68.112389] handle_irq+0x11/0x20
<4>[ 68.112398] do_IRQ+0x5e/0x120
<4>[ 68.112416] common_interrupt+0x84/0x84
<4>[ 68.112425] </IRQ>
<4>[ 68.112432] RIP: 0010:vprintk_emit+0x23b/0x4f0
<4>[ 68.112439] RSP: 0018:ffffc900006679e0 EFLAGS: 00000246 ORIG_RAX:
ffffffffffffffd9
<4>[ 68.112451] RAX: ffff880163e62740 RBX: 0000000000000007 RCX:
0000000000000006
<4>[ 68.112458] RDX: 00000000000013f1 RSI: ffffffff8210fc21 RDI:
ffffffff820c0397
<4>[ 68.112464] RBP: ffffc90000667a30 R08: ffff880163e63018 R09:
00000000c91c9ac7
<4>[ 68.112470] R10: 0000000000000000 R11: 0000000000000000 R12:
0000000000000246
<4>[ 68.112476] R13: 0000000000000000 R14: 0000000000000030 R15:
0000000000000000
<4>[ 68.112530] printk+0x3e/0x46
<4>[ 68.112634] ? intel_disable_pipe+0x3c/0x170 [i915]
<4>[ 68.112651] drm_printk+0x89/0x90
<4>[ 68.112668] ? trace_hardirqs_on_caller+0xde/0x1c0
<4>[ 68.112770] intel_disable_pipe+0x3c/0x170 [i915]
<4>[ 68.112873] haswell_crtc_disable+0x69/0x130 [i915]
<4>[ 68.112979] intel_atomic_commit_tail+0x1ec/0xd20 [i915]
<4>[ 68.113096] intel_atomic_commit+0x256/0x330 [i915]
<4>[ 68.113116] drm_mode_atomic_ioctl+0x827/0x9d0
<4>[ 68.113168] ? drm_atomic_set_property+0x4c0/0x4c0
<4>[ 68.113178] drm_ioctl_kernel+0x60/0xa0
<4>[ 68.113193] drm_ioctl+0x2a0/0x340
<4>[ 68.113208] ? drm_atomic_set_property+0x4c0/0x4c0
<4>[ 68.113248] do_vfs_ioctl+0x8a/0x670
<4>[ 68.113259] ? __close_fd+0xbc/0xd0
<4>[ 68.113272] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7
<4>[ 68.113287] SyS_ioctl+0x36/0x70
<4>[ 68.113303] do_syscall_64+0x65/0x1a0
<4>[ 68.113316] entry_SYSCALL_64_after_hwframe+0x42/0xb7
<4>[ 68.113324] RIP: 0033:0x7fd790497587
<4>[ 68.113330] RSP: 002b:00007ffd0cef8798 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
<4>[ 68.113343] RAX: ffffffffffffffda RBX: 000055c8080be920 RCX:
00007fd790497587
<4>[ 68.113349] RDX: 00007ffd0cef87f0 RSI: 00000000c03864bc RDI:
0000000000000003
<4>[ 68.113355] RBP: 00007ffd0cef87f0 R08: 000055c8080c6920 R09:
000055c8080c67d0
<4>[ 68.113361] R10: 0000000000000001 R11: 0000000000000246 R12:
00000000c03864bc
<4>[ 68.113368] R13: 0000000000000003 R14: 000055c8080c68e0 R15:
000055c8080c6900
<4>[ 68.113400] 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>[ 68.113762] ---[ end trace 76374fdf2f867fe7 ]---</pre>
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