[  136.376204] [drm:amdgpu_fill_buffer [amdgpu]] *ERROR* Trying to clear memory with ring turned off.
[  360.315536] INFO: task ethdcrminer64:1455 blocked for more than 120 seconds.
[  360.315770]       Tainted: G           OE   4.4.0-116-generic #140-Ubuntu
[  360.315985] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  360.316233] ethdcrminer64   D ffff880447b1fa48     0  1455   1454 0x00000004
[  360.316244]  ffff880447b1fa48 ffff880447b1fa28 ffff88044bff9e00 ffff880447561e00
[  360.316251]  ffff880447b20000 ffff880447b1fb48 ffff880447e0f4b0 0000000000000001
[  360.316258]  0000000000100ba0 ffff880447b1fa60 ffffffff8184ae45 ffff88044896cc00
[  360.316265] Call Trace:
[  360.316279]  [] schedule+0x35/0x80
[  360.316396]  [] amd_sched_entity_push_job+0x74/0x120 [amdgpu]
[  360.316408]  [] ? wake_atomic_t_function+0x60/0x60
[  360.316517]  [] amdgpu_job_submit+0x81/0xc0 [amdgpu]
[  360.316596]  [] amdgpu_vm_bo_update_mapping+0x330/0x400 [amdgpu]
[  360.316671]  [] ? amdgpu_vm_it_subtree_search+0x50/0x50 [amdgpu]
[  360.316745]  [] amdgpu_vm_bo_update+0x338/0x640 [amdgpu]
[  360.316815]  [] amdgpu_gem_va_ioctl+0x530/0x550 [amdgpu]
[  360.316842]  [] ? drm_gem_handle_create_tail+0xe5/0x190 [drm]
[  360.316853]  [] ? kvfree+0x1/0x40
[  360.316877]  [] drm_ioctl+0x155/0x540 [drm]
[  360.316946]  [] ? amdgpu_gem_metadata_ioctl+0x250/0x250 [amdgpu]
[  360.316954]  [] ? put_prev_entity+0x97/0x7d0
[  360.316962]  [] ? lru_cache_add_active_or_unevictable+0x27/0xa0
[  360.317022]  [] amdgpu_drm_ioctl+0x4c/0x80 [amdgpu]
[  360.317031]  [] do_vfs_ioctl+0x2af/0x4b0
[  360.317039]  [] ? schedule+0x35/0x80
[  360.317046]  [] SyS_ioctl+0x79/0x90
[  360.317055]  [] entry_SYSCALL_64_fastpath+0x1c/0xbb