[ 2698.030990] BUG: unable to handle kernel NULL pointer dereference at   (null)
[ 2698.032777] IP: [<c13f27b2>] strlen+0x12/0x20
[ 2698.032777] *pdpt = 0000000025cda001 *pde = 0000000000000000
[ 2698.032777] Oops: 0000 [#1] SMP
[ 2698.032777] Modules linked in: tw5864(OE) videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 videobuf2_core videodev snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep gpio_ich snd_pcm snd_timer snd coretemp lpc_ich serio_raw soundcore shpchp mac_hid binfmt_misc netconsole configfs autofs4 i915 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm psmouse pata_acpi video
[ 2698.032777] CPU: 1 PID: 359 Comm: bc-server Tainted: G           OE   4.6.0-rc7-next-20160509+ #2
[ 2698.032777] Hardware name:                  /DG31PR, BIOS PRG3110H.86A.0047.2008.0227.1745 02/27/2008
[ 2698.032777] task: e98fce00 ti: e7976000 task.ti: e7976000
[ 2698.032777] EIP: 0060:[<c13f27b2>] EFLAGS: 00010246 CPU: 1
[ 2698.032777] EIP is at strlen+0x12/0x20
[ 2698.032777] EAX: 00000000 EBX: e5e6c0c0 ECX: ffffffff EDX: 00000000
[ 2698.032777] ESI: e5e6c0e8 EDI: 00000000 EBP: e7977ed8 ESP: e7977ed4
[ 2698.032777]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[ 2698.032777] CR0: 80050033 CR2: 00000000 CR3: 263a0640 CR4: 000006f0
[ 2698.032777] Stack:
[ 2698.032777]  e7977f54 e7977f18 c1291755 11046bda 00000000 e5e0f960 00000000 0000000a
[ 2698.032777]  e7afe8c0 f5de6960 00000000 00000005 00000000 00000000 e7afe8c0 e7977f54
[ 2698.032777]  fffffffe e7977f4c c122b2f7 00000246 b7774d5d e7976000 e7977f40 c1237689
[ 2698.032777] Call Trace:
[ 2698.032777]  [<c1291755>] kernfs_fop_readdir+0xa5/0x290
[ 2698.032777]  [<c122b2f7>] iterate_dir+0x187/0x1b0
[ 2698.032777]  [<c1237689>] ? __fget_light+0x29/0x90
[ 2698.032777]  [<c122b8c2>] SyS_getdents64+0x72/0x100
[ 2698.032777]  [<c122b450>] ? filldir+0x130/0x130
[ 2698.032777]  [<c1003af5>] do_fast_syscall_32+0xa5/0x230
[ 2698.032777]  [<c1827ff4>] sysenter_past_esp+0x45/0x74
[ 2698.032777] Code: f7 be 01 00 00 00 89 f0 48 5e 5d c3 8d b6 00 00 00 00 8d bc 27 00 00 00 00 55 89 e5 57 66 66 66 66 90 b9 ff ff ff ff 89 c7 31 c0 <f2> ae b8 fe ff ff ff 29 c8 5f 5d c3 66 90 55 89 e5 57 66 66 66
[ 2698.032777] EIP: [<c13f27b2>] strlen+0x12/0x20 SS:ESP 0068:e7977ed4
[ 2698.032777] CR2: 0000000000000000
[ 2698.167019] ---[ end trace f1ff3132fbcec8e3 ]---