Jan 18 16:14:50 ph4 kernel: INFO: task Xorg:735 blocked for more than 120 seconds.
Jan 18 16:14:50 ph4 kernel:       Not tainted 4.4.0-rc6-gd8e0cae-dirty #2
Jan 18 16:14:50 ph4 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jan 18 16:14:50 ph4 kernel: Xorg            D ffff8800bc443a78     0   735    734 0x00000004
Jan 18 16:14:50 ph4 kernel:  ffff8800bc443a78 ffff88022a859008 ffff8802369b0000 ffff8800bc5f8000
Jan 18 16:14:50 ph4 kernel:  0000000000000000 0000000000000000 ffff8800bc444000 0000000000000000
Jan 18 16:14:50 ph4 kernel:  ffff8800bc5f8000 ffff88022a93a3c0 0000000000000286 ffff8800bc443a90
Jan 18 16:14:50 ph4 kernel: Call Trace:
Jan 18 16:14:50 ph4 kernel:  [<ffffffff8155c72a>] schedule+0x3a/0x90
Jan 18 16:14:50 ph4 kernel:  [<ffffffff8155f2b3>] schedule_timeout+0x163/0x240
Jan 18 16:14:50 ph4 kernel:  [<ffffffff81076de0>] ? preempt_count_add+0x80/0xc0
Jan 18 16:14:50 ph4 kernel:  [<ffffffff813a13fc>] fence_default_wait+0x19c/0x210
Jan 18 16:14:50 ph4 kernel:  [<ffffffff813a0570>] ? fence_free+0x20/0x20
Jan 18 16:14:50 ph4 kernel:  [<ffffffff813a0c26>] fence_wait_timeout+0x86/0x150
Jan 18 16:14:50 ph4 kernel:  [<ffffffffa0341640>] amdgpu_ctx_add_fence+0x70/0x1a0 [amdgpu]
Jan 18 16:14:50 ph4 kernel:  [<ffffffffa0332054>] amdgpu_cs_ioctl+0x854/0xbf0 [amdgpu]
Jan 18 16:14:50 ph4 kernel:  [<ffffffffa00bc01d>] drm_ioctl+0x14d/0x500 [drm]
Jan 18 16:14:50 ph4 kernel:  [<ffffffffa0331800>] ? amdgpu_cs_find_mapping+0x90/0x90 [amdgpu]
Jan 18 16:14:50 ph4 kernel:  [<ffffffff81076de0>] ? preempt_count_add+0x80/0xc0
Jan 18 16:14:50 ph4 kernel:  [<ffffffff81560053>] ? _raw_write_unlock_irqrestore+0x13/0x30
Jan 18 16:14:50 ph4 kernel:  [<ffffffff81560079>] ? _raw_spin_unlock_irqrestore+0x9/0x10
Jan 18 16:14:50 ph4 kernel:  [<ffffffffa0319054>] amdgpu_drm_ioctl+0x54/0x90 [amdgpu]
Jan 18 16:14:50 ph4 kernel:  [<ffffffff8118b133>] do_vfs_ioctl+0x293/0x480
Jan 18 16:14:51 ph4 kernel:  [<ffffffff81492a44>] ? __sys_recvmsg+0x44/0x80
Jan 18 16:14:51 ph4 kernel:  [<ffffffff8118b367>] SyS_ioctl+0x47/0x80
Jan 18 16:14:51 ph4 kernel:  [<ffffffff8156061b>] entry_SYSCALL_64_fastpath+0x16/0x6e