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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BAT][BSW] pipe C vblank wait timed out when running igt@kms_frontbuffer_tracking@basic"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101707">101707</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[BAT][BSW] pipe C vblank wait timed out when running igt@kms_frontbuffer_tracking@basic
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>DRI git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>martin.peres@free.fr
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>On CI_DRM_2805, the machine fi-bsw-n3050 hung when executing
igt@kms_frontbuffer_tracking@basic. This is likely due to the following WARNING
in the kernel logs.
[ 471.074746] pipe C vblank wait timed out
[ 471.074919] ------------[ cut here ]------------
[ 471.075239] WARNING: CPU: 1 PID: 3725 at
drivers/gpu/drm/i915/intel_display.c:12866 intel_atomic_commit_tail+0xf4e/0xf70
[i915]
[ 471.078448] Modules linked in: vgem snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_codec_generic intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul
i915 ghash_clmulni_intel snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core
snd_pcm r8169 mii lpc_ich i2c_hid prime_numbers i2c_designware_platform
i2c_designware_core pinctrl_cherryview
[ 471.079068] CPU: 1 PID: 3725 Comm: kms_frontbuffer Tainted: G U
4.12.0-CI-CI_DRM_2805+ #1
[ 471.079097] Hardware name: /NUC5CPYB, BIOS
PYBSWCEL.86A.0058.2016.1102.1842 11/02/2016
[ 471.079127] task: ffff88013f94a600 task.stack: ffffc9000083c000
[ 471.079454] RIP: 0010:intel_atomic_commit_tail+0xf4e/0xf70 [i915]
[ 471.085478] RSP: 0018:ffffc9000083fac8 EFLAGS: 00010292
[ 471.085491] RAX: 000000000000001c RBX: 0000000000000002 RCX:
0000000000000001
[ 471.085498] RDX: 0000000080000001 RSI: ffffffff81cbd240 RDI:
00000000ffffffff
[ 471.085504] RBP: ffffc9000083fb70 R08: ffff88013f94ae60 R09:
0000000000000000
[ 471.085510] R10: 0000000000000000 R11: 0000000000000000 R12:
ffff88016cc68000
[ 471.085516] R13: 0000000000000430 R14: 0000000000000008 R15:
0000000000000004
[ 471.085522] FS: 00007f3269822a40(0000) GS:ffff88017fd00000(0000)
knlGS:0000000000000000
[ 471.085529] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 471.085535] CR2: 00007f6958f71000 CR3: 000000014a3b2000 CR4:
00000000001006e0
[ 471.085541] Call Trace:
[ 471.085561] ? wake_atomic_t_function+0x30/0x30
[ 471.085650] intel_atomic_commit+0x3fb/0x500 [i915]
[ 471.085663] ? drm_atomic_check_only+0x370/0x560
[ 471.085671] ? drm_connector_list_iter_end+0x2f/0x40
[ 471.085681] ? handle_conflicting_encoders+0x270/0x290
[ 471.085691] drm_atomic_commit+0x46/0x50
[ 471.085700] drm_atomic_helper_set_config+0x68/0x90
[ 471.085710] __drm_mode_set_config_internal+0x60/0x110
[ 471.085719] drm_mode_setcrtc+0x3e9/0x5f0
[ 471.085746] drm_ioctl+0x202/0x490
[ 471.085753] ? drm_mode_getcrtc+0x180/0x180
[ 471.085774] ? __do_page_fault+0x29e/0x560
[ 471.085785] do_vfs_ioctl+0x90/0x6d0
[ 471.085795] ? entry_SYSCALL_64_fastpath+0x5/0xb1
[ 471.085805] ? __this_cpu_preempt_check+0x13/0x20
[ 471.085814] ? trace_hardirqs_on_caller+0xe7/0x1c0
[ 471.085824] SyS_ioctl+0x3c/0x70
[ 471.085835] entry_SYSCALL_64_fastpath+0x1c/0xb1
[ 471.085842] RIP: 0033:0x7f3267d2bf07
[ 471.085848] RSP: 002b:00007ffd87a3b7d8 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[ 471.085860] RAX: ffffffffffffffda RBX: ffffffff81470303 RCX:
00007f3267d2bf07
[ 471.085866] RDX: 00007ffd87a3b810 RSI: 00000000c06864a2 RDI:
0000000000000003
[ 471.085872] RBP: ffffc9000083ff88 R08: 0000000000000000 R09:
000000000065c984
[ 471.085878] R10: 00000000024b7d20 R11: 0000000000000246 R12:
0000000000000000
[ 471.085884] R13: 0000000000000003 R14: 00000000c06864a2 R15:
0000000000000003
[ 471.085894] ? __this_cpu_preempt_check+0x13/0x20
[ 471.085908] Code: ff ff ff 48 83 c7 08 e8 d1 b6 f7 e0 4c 8b 85 78 ff ff ff
4d 85 c0 0f 85 d4 fd ff ff 8d 73 41 48 c7 c7 a0 13 22 a0 e8 0b 8a 02 e1 <0f> ff
e9 be fd ff ff 8d 70 41 48 c7 c7 70 13 22 a0 e8 f5 89 02
[ 471.089248] ---[ end trace ac67ed0bfd283b5b ]---
Full logs:
<a href="https://intel-gfx-ci.01.org/CI/CI_DRM_2805/fi-bsw-n3050/igt@kms_frontbuffer_tracking@basic.html">https://intel-gfx-ci.01.org/CI/CI_DRM_2805/fi-bsw-n3050/igt@kms_frontbuffer_tracking@basic.html</a></pre>
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