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<base href="https://bugs.freedesktop.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@kms_flip@wf_vblank-vs-dpms[-s-interruptible] - Incomplete - INFO: task kms_flip:8510 blocked for more than 60 seconds."
href="https://bugs.freedesktop.org/show_bug.cgi?id=103608">103608</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[CI] igt@kms_flip@wf_vblank-vs-dpms[-s-interruptible] - Incomplete - INFO: task kms_flip:8510 blocked for more than 60 seconds.
</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>marta.lofstedt@intel.com
</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><a href="https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3316/shard-hsw8/igt@kms_flip@wf_vblank-vs-dpms.html">https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3316/shard-hsw8/igt@kms_flip@wf_vblank-vs-dpms.html</a>
<3>[ 1353.212534] INFO: task kms_flip:8510 blocked for more than 60 seconds.
<3>[ 1353.212535] Tainted: G U W 4.14.0-rc8-CI-CI_DRM_3316+ #1
<3>[ 1353.212536] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
<6>[ 1353.212536] kms_flip D 0 8510 8280 0x00000000
<4>[ 1353.212538] Call Trace:
<4>[ 1353.212542] __schedule+0x3c3/0xaf0
<4>[ 1353.212544] schedule+0x40/0x90
<4>[ 1353.212545] schedule_preempt_disabled+0x18/0x30
<4>[ 1353.212547] __mutex_lock+0x2bb/0x9b0
<4>[ 1353.212549] ? drm_mode_getconnector+0x15c/0x3c0
<4>[ 1353.212551] ? mutex_unlock+0x12/0x20
<4>[ 1353.212553] mutex_lock_nested+0x1b/0x20
<4>[ 1353.212554] ? mutex_lock_nested+0x1b/0x20
<4>[ 1353.212555] drm_mode_getconnector+0x15c/0x3c0
<4>[ 1353.212557] ? drm_mode_connector_property_set_ioctl+0x40/0x40
<4>[ 1353.212559] drm_ioctl_kernel+0x69/0xb0
<4>[ 1353.212560] drm_ioctl+0x2f9/0x3d0
<4>[ 1353.212561] ? drm_mode_connector_property_set_ioctl+0x40/0x40
<4>[ 1353.212564] ? __vfs_read+0x28/0x120
<4>[ 1353.212567] do_vfs_ioctl+0x94/0x670
<4>[ 1353.212568] ? vfs_read+0x12d/0x150
<4>[ 1353.212569] SyS_ioctl+0x41/0x70
<4>[ 1353.212572] entry_SYSCALL_64_fastpath+0x1c/0xb1
<4>[ 1353.212573] RIP: 0033:0x7fc4537bc587
<4>[ 1353.212573] RSP: 002b:00007ffe6d4cdfc8 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
<4>[ 1353.212574] RAX: ffffffffffffffda RBX: 00007ffe6d4cde80 RCX:
00007fc4537bc587
<4>[ 1353.212575] RDX: 00007ffe6d4ce000 RSI: 00000000c05064a7 RDI:
0000000000000003
<4>[ 1353.212575] RBP: 00007ffe6d4cde70 R08: 000055bcff51d7d0 R09:
0000000000000000
<4>[ 1353.212576] R10: 0000000000000073 R11: 0000000000000246 R12:
000055bcfe56fa68
<4>[ 1353.212577] R13: 00007ffe6d4ce040 R14: 0000000000000000 R15:
ffffffffffffffff
<4>[ 1353.212579] INFO: lockdep is turned off.
<4>[ 1353.212579] NMI backtrace for cpu 0
<4>[ 1353.212581] CPU: 0 PID: 66 Comm: khungtaskd Tainted: G U W
4.14.0-rc8-CI-CI_DRM_3316+ #1
<4>[ 1353.212581] Hardware name: MSI MS-7924/Z97M-G43(MS-7924), BIOS V1.12
02/15/2016
<4>[ 1353.212582] Call Trace:
<4>[ 1353.212584] dump_stack+0x68/0x9f
<4>[ 1353.212585] nmi_cpu_backtrace+0xbe/0xc0
<4>[ 1353.212587] ? irq_force_complete_move+0xe0/0xe0
<4>[ 1353.212589] nmi_trigger_cpumask_backtrace+0xc0/0x100
<4>[ 1353.212590] arch_trigger_cpumask_backtrace+0x19/0x20
<4>[ 1353.212592] watchdog+0x454/0x610
<4>[ 1353.212593] kthread+0x114/0x150
<4>[ 1353.212594] ? reset_hung_task_detector+0x20/0x20
<4>[ 1353.212595] ? kthread_create_on_node+0x40/0x40
<4>[ 1353.212596] ret_from_fork+0x27/0x40
<6>[ 1353.212599] Sending NMI from CPU 0 to CPUs 1-7:
<4>[ 1353.212718] NMI backtrace for cpu 5 skipped: idling at pc
0xffffffff81911925
<4>[ 1353.212720] NMI backtrace for cpu 2 skipped: idling at pc
0xffffffff81911925
<4>[ 1353.212721] NMI backtrace for cpu 7 skipped: idling at pc
0xffffffff81911925
<4>[ 1353.212723] NMI backtrace for cpu 3 skipped: idling at pc
0xffffffff81911925
<4>[ 1353.212724] NMI backtrace for cpu 1 skipped: idling at pc
0xffffffff81911925
<4>[ 1353.212726] NMI backtrace for cpu 6 skipped: idling at pc
0xffffffff81911925
<4>[ 1353.213601] NMI backtrace for cpu 4
<4>[ 1353.213601] CPU: 4 PID: 7402 Comm: kworker/4:0 Tainted: G U W
4.14.0-rc8-CI-CI_DRM_3316+ #1
<4>[ 1353.213602] Hardware name: MSI MS-7924/Z97M-G43(MS-7924), BIOS V1.12
02/15/2016
<4>[ 1353.213602] Workqueue: events i915_hpd_poll_init_work [i915]
<4>[ 1353.213603] task: ffff8803f9bd2800 task.stack: ffffc90000388000
<4>[ 1353.213603] RIP: 0010:io_serial_in+0x18/0x20
<4>[ 1353.213603] RSP: 0018:ffffc9000038bad8 EFLAGS: 00000002
<4>[ 1353.213604] RAX: 0000000080000000 RBX: ffffffff836212c0 RCX:
0000000000000000
<4>[ 1353.213604] RDX: 00000000000003fd RSI: 0000000000000005 RDI:
ffffffff836212c0
<4>[ 1353.213604] RBP: ffffc9000038bad8 R08: 0000000000000001 R09:
0000000000000001
<4>[ 1353.213605] R10: ffffc9000038bac8 R11: ffffffff815b0141 R12:
00000000000026fe
<4>[ 1353.213605] R13: 0000000000000020 R14: ffffffff82ca4efa R15:
ffffffff836212c0
<4>[ 1353.213606] FS: 0000000000000000(0000) GS:ffff88041fb00000(0000)
knlGS:0000000000000000
<4>[ 1353.213606] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[ 1353.213606] CR2: 00007fc45046c220 CR3: 0000000003e0f001 CR4:
00000000001606e0
<4>[ 1353.213606] Call Trace:
<4>[ 1353.213607] wait_for_xmitr+0x41/0xa0
<4>[ 1353.213607] serial8250_console_putchar+0x1c/0x30
<4>[ 1353.213607] ? wait_for_xmitr+0xa0/0xa0
<4>[ 1353.213607] uart_console_write+0x30/0x70
<4>[ 1353.213608] serial8250_console_write+0xd9/0x270
<4>[ 1353.213608] ? vt_console_print+0x225/0x3b0
<4>[ 1353.213608] ? msg_print_text+0x9d/0x100
<4>[ 1353.213609] univ8250_console_write+0x26/0x30
<4>[ 1353.213609] console_unlock+0x430/0x570
<4>[ 1353.213609] vprintk_emit+0x254/0x3b0
<4>[ 1353.213609] ? wake_up_q+0x59/0x80
<4>[ 1353.213610] vprintk_default+0x1f/0x30
<4>[ 1353.213610] vprintk_func+0x2c/0x90
<4>[ 1353.213610] printk+0x43/0x4b
<4>[ 1353.213610] ? drm_helper_hpd_irq_event+0xcc/0x110
<4>[ 1353.213611] drm_printk+0x8e/0x90
<4>[ 1353.213611] drm_helper_hpd_irq_event+0xcc/0x110
<4>[ 1353.213611] i915_hpd_poll_init_work+0xc5/0x100 [i915]
<4>[ 1353.213612] process_one_work+0x221/0x650
<4>[ 1353.213612] worker_thread+0x4e/0x3c0
<4>[ 1353.213612] kthread+0x114/0x150
<4>[ 1353.213612] ? process_one_work+0x650/0x650
<4>[ 1353.213613] ? kthread_create_on_node+0x40/0x40
<4>[ 1353.213613] ret_from_fork+0x27/0x40
<4>[ 1353.213613] Code: 48 89 e5 d3 e6 48 63 f6 48 03 77 40 8b 06 5d c3 0f 1f
00 0f 1f 44 00 00 0f b6 8f d1 00 00 00 8b 57 38 55 48 89 e5 d3 e6 01 f2 ec <0f>
b6 c0 5d c3 0f 1f 00 0f 1f 44 00 00 0f b6 8f d1 00 00 00 89
<0>[ 1353.213626] Kernel panic - not syncing: hung_task: blocked tasks
<4>[ 1353.213627] CPU: 0 PID: 66 Comm: khungtaskd Tainted: G U W
4.14.0-rc8-CI-CI_DRM_3316+ #1
<4>[ 1353.213627] Hardware name: MSI MS-7924/Z97M-G43(MS-7924), BIOS V1.12
02/15/2016
<4>[ 1353.213628] Call Trace:
<4>[ 1353.213629] dump_stack+0x68/0x9f
<4>[ 1353.213631] panic+0xd4/0x21d
<4>[ 1353.213633] watchdog+0x460/0x610
<4>[ 1353.213635] kthread+0x114/0x150
<4>[ 1353.213636] ? reset_hung_task_detector+0x20/0x20
<4>[ 1353.213636] ? kthread_create_on_node+0x40/0x40
<4>[ 1353.213637] ret_from_fork+0x27/0x40
<0>[ 1353.217854] Kernel Offset: disabled</pre>
</div>
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