[ 3600.247976] INFO: task Xorg:354 blocked for more than 120 seconds.
[ 3600.247978]       Tainted: G           O    4.6.0-rc7-drm #2
[ 3600.247979] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 3600.247980] Xorg            D ffff8800d74db940     0   354    344 0x00000004
[ 3600.247982]  ffff8800d74db940 ffff8800d74db920 ffffffff81398ae7 0000000034c1e2ae
[ 3600.247984]  ffff8800d74dc000 ffff8800d78440e8 ffff880205ef4480 ffff8801f2aa71a8
[ 3600.247985]  ffff880215ded568 ffff8800d74db958 ffffffff817ce587 ffff8801f2aa7000
[ 3600.247987] Call Trace:
[ 3600.247990]  [<ffffffff81398ae7>] ? __kfifo_in+0x37/0x50
[ 3600.247992]  [<ffffffff817ce587>] schedule+0x37/0x90
[ 3600.247994]  [<ffffffff81509fd3>] amd_sched_entity_push_job+0x63/0xc0
[ 3600.247997]  [<ffffffff810f4a20>] ? wake_atomic_t_function+0x60/0x60
[ 3600.247998]  [<ffffffff8150a96a>] amdgpu_job_submit+0x8a/0xe0
[ 3600.248000]  [<ffffffff814cfdf2>] amdgpu_vm_bo_update_mapping+0x2a2/0x410
[ 3600.248001]  [<ffffffff814d0081>] amdgpu_vm_bo_split_mapping+0x121/0x140
[ 3600.248002]  [<ffffffff814d0f1d>] amdgpu_vm_bo_update+0x13d/0x240
[ 3600.248004]  [<ffffffff814c2c1f>] amdgpu_gem_va_update_vm+0x1af/0x1d0
[ 3600.248006]  [<ffffffff8139de01>] ? interval_tree_iter_next+0x71/0x80
[ 3600.248007]  [<ffffffff814bcb01>] ? amdgpu_ttm_swap_lru_tail+0x11/0x30
[ 3600.248008]  [<ffffffff814c3d25>] amdgpu_gem_va_ioctl+0x235/0x2e0
[ 3600.248010]  [<ffffffff81483d54>] ? drm_gem_handle_create_tail+0xe4/0x1a0
[ 3600.248011]  [<ffffffff814c3401>] ? amdgpu_gem_create_ioctl+0xb1/0x130
[ 3600.248012]  [<ffffffff814845ad>] drm_ioctl+0x14d/0x530
[ 3600.248014]  [<ffffffff814c3af0>] ? amdgpu_gem_metadata_ioctl+0x1c0/0x1c0
[ 3600.248016]  [<ffffffff811ce37a>] ? do_readv_writev+0x1fa/0x2a0
[ 3600.248017]  [<ffffffff814ac937>] amdgpu_drm_ioctl+0x47/0x80
[ 3600.248018]  [<ffffffff811df71c>] do_vfs_ioctl+0x9c/0x5a0
[ 3600.248020]  [<ffffffff816b523c>] ? __sys_recvmsg+0x4c/0x90
[ 3600.248021]  [<ffffffff811dfc5c>] SyS_ioctl+0x3c/0x70
[ 3600.248023]  [<ffffffff817d1c9f>] entry_SYSCALL_64_fastpath+0x17/0x93