[    9.619863] [drm] initializing kernel modesetting (VERDE 0x1002:0x6823 0x1028:0x05EB 0x00).
[    9.619875] [drm] register mmio base: 0xC0500000
[    9.619876] [drm] register mmio size: 262144
[    9.619881] vga_switcheroo: enabled
[    9.627175] ATOM BIOS: Venus
[    9.627187] [drm] GPU post is not needed
[    9.627636] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
[    9.628274] IP: amdgpu_debugfs_add_files+0x8d/0x100 [amdgpu]
[    9.628867] PGD 2514c7067 
[    9.628876] PUD 2514c8067 
[    9.629448] PMD 0 

[    9.630026] Oops: 0000 [#1] PREEMPT SMP
[    9.630602] Modules linked in: amdgpu(+) r8169 crct10dif_pclmul crc32_pclmul snd_timer snd mii crc32c_intel ttm dcdbas ghash_clmulni_intel soundcore iTCO_wdt iTCO_vendor_support xhci_pci xhci_hcd ehci_pci input_leds ehci_hcd usbcore lpc_ich pcspkr serio_raw wmi evdev
[    9.631903] CPU: 3 PID: 387 Comm: udevd Not tainted 4.9.0-rc7-next-20161130 #109
[    9.632509] Hardware name: Dell Inc. Inspiron 3537/0PHTY0, BIOS A07 11/12/2013
[    9.633115] task: ffff8802553e1d40 task.stack: ffffc900022e4000
[    9.633749] RIP: 0010:amdgpu_debugfs_add_files+0x8d/0x100 [amdgpu]
[    9.634360] RSP: 0018:ffffc900022e7900 EFLAGS: 00010246
[    9.634974] RAX: ffff8802553cb800 RBX: ffffffffa0238140 RCX: 0000000000000000
[    9.635591] RDX: 0000000000000001 RSI: 0000000000000002 RDI: ffffffffa0238140
[    9.636210] RBP: ffffc900022e7918 R08: 000000000001b260 R09: ffffffff8175e432
[    9.636831] R10: ffffea0009548680 R11: 0000000000000014 R12: ffff8802508f8000
[    9.637443] R13: 0000000000000002 R14: ffff8802508f8000 R15: ffff8802508fea48
[    9.638054] FS:  00007f8c2436d780(0000) GS:ffff88025f2c0000(0000) knlGS:0000000000000000
[    9.638669] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.639285] CR2: 0000000000000018 CR3: 00000002514c6000 CR4: 00000000001406e0
[    9.639906] Call Trace:
[    9.640538]  amdgpu_fence_driver_init+0x1e/0x40 [amdgpu]
[    9.641186]  amdgpu_device_init+0xa6d/0x1410 [amdgpu]
[    9.641900]  ? kmalloc_order_trace+0x2e/0x100
[    9.642587]  amdgpu_driver_load_kms+0x5b/0x200 [amdgpu]
[    9.643355]  drm_dev_register+0xa7/0xd0
[    9.644016]  drm_get_pci_dev+0xde/0x1d0
[    9.644659]  amdgpu_pci_probe+0xbe/0xf0 [amdgpu]
[    9.645290]  local_pci_probe+0x45/0xa0
[    9.645920]  ? pci_match_device+0xe0/0x110
[    9.646555]  pci_device_probe+0x103/0x150
[    9.647191]  driver_probe_device+0x2bf/0x460
[    9.647833]  __driver_attach+0xdf/0xf0
[    9.648469]  ? driver_probe_device+0x460/0x460
[    9.649110]  bus_for_each_dev+0x6c/0xc0
[    9.649751]  driver_attach+0x1e/0x20
[    9.650390]  bus_add_driver+0x1fd/0x270
[    9.651030]  ? 0xffffffffa02de000
[    9.651666]  driver_register+0x60/0xe0
[    9.652402]  ? 0xffffffffa02de000
[    9.653040]  __pci_register_driver+0x4c/0x50
[    9.653631]  drm_pci_init+0xe6/0x100
[    9.654210]  ? vga_switcheroo_register_handler+0x6a/0x90
[    9.654782]  ? 0xffffffffa02de000
[    9.655367]  amdgpu_init+0x93/0xa4 [amdgpu]
[    9.655965]  do_one_initcall+0x53/0x1a0
[    9.656523]  ? __vunmap+0x81/0xd0
[    9.657099]  ? vfree+0x2e/0x70
[    9.657640]  do_init_module+0x5f/0x201
[    9.658172]  load_module+0x23fc/0x28e0
[    9.658699]  ? symbol_put_addr+0x50/0x50
[    9.659222]  SyS_init_module+0x169/0x180
[    9.659743]  do_syscall_64+0x61/0x170
[    9.660581]  entry_SYSCALL64_slow_path+0x25/0x25
[    9.661228] RIP: 0033:0x7f8c23a7e51a
[    9.661734] RSP: 002b:00007fffa280bc38 EFLAGS: 00000246 ORIG_RAX: 00000000000000af
[    9.662249] RAX: ffffffffffffffda RBX: 000000000111b910 RCX: 00007f8c23a7e51a
[    9.662759] RDX: 000000000111ce20 RSI: 000000000023e088 RDI: 00007f8c21ebc010
[    9.663266] RBP: 000000000111ce20 R08: 0000000000000008 R09: 0000000000000019
[    9.663770] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8c21ebc010
[    9.664268] R13: 000000000111ba00 R14: 0000000000020000 R15: 0000000000000000
[    9.664764] Code: e1 04 44 89 ee 48 89 df 49 8d 04 0c 48 89 98 00 01 00 00 44 89 a8 08 01 00 00 49 8b 44 24 08 41 89 94 24 00 03 00 00 48 8b 48 30 <48> 8b 51 18 e8 5a 38 45 e1 49 8b 44 24 08 44 89 ee 48 89 df 48 
[    9.665991] RIP: amdgpu_debugfs_add_files+0x8d/0x100 [amdgpu] RSP: ffffc900022e7900
[    9.666554] CR2: 0000000000000018
[    9.667117] ---[ end trace 8fe4e5c7ce1f9790 ]---