[Wed Apr 25 20:18:50 2018] [drm] amdgpu kernel modesetting enabled.
[Wed Apr 25 20:18:50 2018] [drm] initializing kernel modesetting (RAVEN 0x1002:0x15DD 0x1043:0x876B 0xC6).
[Wed Apr 25 20:18:50 2018] [drm] register mmio base: 0xFE500000
[Wed Apr 25 20:18:50 2018] [drm] register mmio size: 524288
[Wed Apr 25 20:18:50 2018] [drm] probing gen 2 caps for device 1022:15db = 700d03/e
[Wed Apr 25 20:18:50 2018] [drm] probing mlw for device 1022:15db = 700d03
[Wed Apr 25 20:18:50 2018] [drm] VCN decode is enabled in VM mode
[Wed Apr 25 20:18:50 2018] [drm] VCN encode is enabled in VM mode
[Wed Apr 25 20:18:50 2018] [drm] BIOS signature incorrect 5b 7
[Wed Apr 25 20:18:50 2018] ATOM BIOS: 113-RAVEN-106
[Wed Apr 25 20:18:50 2018] [drm] vm size is 262144 GB, 4 levels, block size is 9-bit, fragment size is 9-bit
[Wed Apr 25 20:18:50 2018] amdgpu 0000:07:00.0: SME is active, device will require DMA bounce buffers
[Wed Apr 25 20:18:50 2018] amdgpu 0000:07:00.0: SME is active, device will require DMA bounce buffers
[Wed Apr 25 20:18:50 2018] amdgpu 0000:07:00.0: VRAM: 1024M 0x000000F400000000 - 0x000000F43FFFFFFF (1024M used)
[Wed Apr 25 20:18:50 2018] amdgpu 0000:07:00.0: GTT: 1024M 0x000000F500000000 - 0x000000F53FFFFFFF
[Wed Apr 25 20:18:50 2018] [drm] Detected VRAM RAM=1024M, BAR=256M
[Wed Apr 25 20:18:50 2018] [drm] RAM width 128bits UNKNOWN
[Wed Apr 25 20:18:50 2018] [TTM] Zone  kernel: Available graphics memory: 15898556 kiB
[Wed Apr 25 20:18:50 2018] [TTM] Zone   dma32: Available graphics memory: 2097152 kiB
[Wed Apr 25 20:18:50 2018] [TTM] Initializing pool allocator
[Wed Apr 25 20:18:50 2018] [TTM] Initializing DMA pool allocator
[Wed Apr 25 20:18:50 2018] [drm] amdgpu: 1024M of VRAM memory ready
[Wed Apr 25 20:18:50 2018] [drm] amdgpu: 3072M of GTT memory ready.
[Wed Apr 25 20:18:50 2018] [drm] GART: num cpu pages 262144, num gpu pages 262144
[Wed Apr 25 20:18:50 2018] [drm] PCIE GART of 1024M enabled (table at 0x000000F400800000).
[Wed Apr 25 20:18:50 2018] amdgpu 0000:07:00.0: swiotlb buffer is full (sz: 262152 bytes)
[Wed Apr 25 20:18:50 2018] amdgpu 0000:07:00.0: swiotlb: coherent allocation failed, size=262152
[Wed Apr 25 20:18:50 2018] CPU: 0 PID: 261 Comm: udevd Not tainted 4.16.4-ojab #23
[Wed Apr 25 20:18:50 2018] Call Trace:
[Wed Apr 25 20:18:50 2018]  dump_stack+0x67/0x93
[Wed Apr 25 20:18:50 2018]  swiotlb_alloc_coherent+0x1da/0x1f0
[Wed Apr 25 20:18:50 2018]  amdgpu_ih_ring_init+0x1fc/0x2c0 [amdgpu]
[Wed Apr 25 20:18:50 2018]  vega10_ih_sw_init+0x18/0xb0 [amdgpu]
[Wed Apr 25 20:18:50 2018]  amdgpu_device_init+0xa35/0x11e0 [amdgpu]
[Wed Apr 25 20:18:50 2018]  amdgpu_driver_load_kms+0x56/0x170 [amdgpu]
[Wed Apr 25 20:18:50 2018]  drm_dev_register+0x166/0x1f0 [drm]
[Wed Apr 25 20:18:50 2018]  amdgpu_pci_probe+0x113/0x1a0 [amdgpu]
[Wed Apr 25 20:18:50 2018]  pci_device_probe+0xc9/0x140
[Wed Apr 25 20:18:50 2018]  driver_probe_device+0x281/0x370
[Wed Apr 25 20:18:50 2018]  __driver_attach+0xa9/0xb0
[Wed Apr 25 20:18:50 2018]  ? driver_probe_device+0x370/0x370
[Wed Apr 25 20:18:50 2018]  bus_for_each_dev+0x88/0xd0
[Wed Apr 25 20:18:50 2018]  bus_add_driver+0x1bc/0x240
[Wed Apr 25 20:18:50 2018]  ? 0xffffffffc0a3a000
[Wed Apr 25 20:18:50 2018]  driver_register+0x57/0xc0
[Wed Apr 25 20:18:50 2018]  ? 0xffffffffc0a3a000
[Wed Apr 25 20:18:50 2018]  do_one_initcall+0x5c/0x1c0
[Wed Apr 25 20:18:50 2018]  do_init_module+0x5e/0x205
[Wed Apr 25 20:18:50 2018]  load_module+0x13a2/0x1a00
[Wed Apr 25 20:18:50 2018]  ? m_show+0x1e0/0x1e0
[Wed Apr 25 20:18:50 2018]  SYSC_init_module+0x102/0x150
[Wed Apr 25 20:18:50 2018]  do_syscall_64+0x69/0x120
[Wed Apr 25 20:18:50 2018]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[Wed Apr 25 20:18:50 2018] RIP: 0033:0x7fdf92cfa51a
[Wed Apr 25 20:18:50 2018] RSP: 002b:00007ffc0ec9cd48 EFLAGS: 00000246 ORIG_RAX: 00000000000000af
[Wed Apr 25 20:18:50 2018] RAX: ffffffffffffffda RBX: 0000000000a3efb0 RCX: 00007fdf92cfa51a
[Wed Apr 25 20:18:50 2018] RDX: 00007fdf9392be9d RSI: 00000000002add80 RDI: 00000000013e6e60
[Wed Apr 25 20:18:50 2018] RBP: 00007fdf9392be9d R08: 00000000ffffffff R09: 0000000000a41e80
[Wed Apr 25 20:18:50 2018] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000013e6e60
[Wed Apr 25 20:18:50 2018] R13: 0000000000a3f530 R14: 0000000000020000 R15: 0000000001c9c380
[Wed Apr 25 20:18:50 2018] [drm:amdgpu_device_init [amdgpu]] *ERROR* sw_init of IP block <vega10_ih> failed -12
[Wed Apr 25 20:18:50 2018] amdgpu 0000:07:00.0: amdgpu_device_ip_init failed
[Wed Apr 25 20:18:50 2018] [TTM] Finalizing pool allocator
[Wed Apr 25 20:18:50 2018] [TTM] Finalizing DMA pool allocator
[Wed Apr 25 20:18:50 2018] [TTM] Zone  kernel: Used memory at exit: 0 kiB
[Wed Apr 25 20:18:50 2018] [TTM] Zone   dma32: Used memory at exit: 0 kiB
[Wed Apr 25 20:18:50 2018] [drm] amdgpu: ttm finalized
[Wed Apr 25 20:18:50 2018] amdgpu 0000:07:00.0: Fatal error during GPU init
[Wed Apr 25 20:18:50 2018] [drm] amdgpu: finishing device.
[Wed Apr 25 20:18:50 2018] amdgpu: probe of 0000:07:00.0 failed with error -12