That kernel did crash.

Sep 24 18:09:35 localhost kernel: [ 4473.626297] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
Sep 24 18:09:35 localhost kernel: [ 4473.626376] IP: [<ffffffff815f6a97>] datagram_poll+0xf7/0x110
Sep 24 18:09:35 localhost kernel: [ 4473.626434] PGD 6278e067 PUD 60c21067 PMD 0 
Sep 24 18:09:35 localhost kernel: [ 4473.626474] Oops: 0002 [#1] SMP 
Sep 24 18:09:35 localhost kernel: [ 4473.626506] Modules linked in: hid_magicmouse hidp hid dm_crypt cuse autofs4 snd_hda_codec_hdmi nfsd parport_pc snd_hda_codec_conexant bnep ppdev rfcomm auth_rpcgss nfs_acl nfs lockd sunrpc fscache binfmt_misc intel_powerclamp coretemp kvm_intel kvm crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper arc4 cryptd iwldvm mac80211 snd_hda_intel joydev snd_hda_codec snd_hwdep thinkpad_acpi snd_pcm nvram mei_me btusb snd_page_alloc snd_seq_midi snd_seq_midi_event mei snd_rawmidi snd_seq psmouse iwlwifi snd_seq_device snd_timer bluetooth lp wacom_w8001 snd cfg80211 microcode tpm_tis intel_ips soundcore serio_raw serport lpc_ich mac_hid parport btrfs xor zlib_deflate raid6_pq libcrc32c i915 i2c_algo_bit drm_kms_helper e1000e drm ahci libahci ptp pps_core wmi video
Sep 24 18:09:35 localhost kernel: [ 4473.627227] CPU: 2 PID: 1258 Comm: wpa_supplicant Not tainted 3.9.0-030900-generic #201309241735
Sep 24 18:09:35 localhost kernel: [ 4473.627293] Hardware name: LENOVO 0831CTO/0831CTO, BIOS 6QET53WW (1.23 ) 09/15/2010
Sep 24 18:09:35 localhost kernel: [ 4473.627355] task: ffff8800633cc650 ti: ffff880060c3a000 task.ti: ffff880060c3a000
Sep 24 18:09:35 localhost kernel: [ 4473.627411] RIP: 0010:[<ffffffff815f6a97>]  [<ffffffff815f6a97>] datagram_poll+0xf7/0x110
Sep 24 18:09:35 localhost kernel: [ 4473.627476] RSP: 0018:ffff880060c3b998  EFLAGS: 00010246
Sep 24 18:09:35 localhost kernel: [ 4473.627519] RAX: 0000000000000049 RBX: ffff8800625b6000 RCX: 0000000000000000
Sep 24 18:09:35 localhost kernel: [ 4473.627573] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff880036673b00
Sep 24 18:09:35 localhost kernel: [ 4473.627629] RBP: ffff880060c3b9a8 R08: ffff880060c3a000 R09: ffff8800364b4cd8
Sep 24 18:09:35 localhost kernel: [ 4473.627682] R10: 0000000000000001 R11: 0000000000000002 R12: 000000000000000b
Sep 24 18:09:35 localhost kernel: [ 4473.627735] R13: 0000000000000800 R14: 0000000000003e60 R15: ffff880036673b00
Sep 24 18:09:35 localhost kernel: [ 4473.627792] FS:  00007f7de0aa0740(0000) GS:ffff880077100000(0000) knlGS:0000000000000000
Sep 24 18:09:35 localhost kernel: [ 4473.627853] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Sep 24 18:09:35 localhost kernel: [ 4473.627900] CR2: 0000000000000008 CR3: 0000000060c66000 CR4: 00000000000007e0
Sep 24 18:09:35 localhost kernel: [ 4473.627954] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Sep 24 18:09:35 localhost kernel: [ 4473.628007] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Sep 24 18:09:35 localhost kernel: [ 4473.628062] Stack:
Sep 24 18:09:35 localhost kernel: [ 4473.628079]  ffff880060c3b9b8 ffff8800625b6000 ffff880060c3b9d8 ffffffff816d6e1b
Sep 24 18:09:35 localhost kernel: [ 4473.628140]  ffff880060c3b9e8 0000000000000040 000000000000000b 0000000000000800
Sep 24 18:09:35 localhost kernel: [ 4473.628203]  ffff880060c3b9e8 ffffffff815e674a ffff880060c3bd68 ffffffff811b4622
Sep 24 18:09:35 localhost kernel: [ 4473.628264] Call Trace:
Sep 24 18:09:35 localhost kernel: [ 4473.628294]  [<ffffffff816d6e1b>] packet_poll+0x1b/0x150
Sep 24 18:09:35 localhost kernel: [ 4473.628340]  [<ffffffff815e674a>] sock_poll+0x1a/0x20
Sep 24 18:09:35 localhost kernel: [ 4473.628383]  [<ffffffff811b4622>] do_select+0x2e2/0x5d0
Sep 24 18:09:35 localhost kernel: [ 4473.628430]  [<ffffffff815f2747>] ? __alloc_skb+0x87/0x2a0
Sep 24 18:09:35 localhost kernel: [ 4473.631130]  [<ffffffff811b3e80>] ? __pollwait+0xf0/0xf0
Sep 24 18:09:35 localhost kernel: [ 4473.633662]  [<ffffffff811b3e80>] ? __pollwait+0xf0/0xf0
Sep 24 18:09:35 localhost kernel: [ 4473.636131]  [<ffffffff811b3e80>] ? __pollwait+0xf0/0xf0
Sep 24 18:09:35 localhost kernel: [ 4473.638542]  [<ffffffff811b3e80>] ? __pollwait+0xf0/0xf0
Sep 24 18:09:35 localhost kernel: [ 4473.640909]  [<ffffffff811b3e80>] ? __pollwait+0xf0/0xf0
Sep 24 18:09:35 localhost kernel: [ 4473.643230]  [<ffffffff811b3e80>] ? __pollwait+0xf0/0xf0
Sep 24 18:09:35 localhost kernel: [ 4473.645498]  [<ffffffff811b3e80>] ? __pollwait+0xf0/0xf0
Sep 24 18:09:35 localhost kernel: [ 4473.647730]  [<ffffffff811b4ae2>] core_sys_select+0x1d2/0x310
Sep 24 18:09:35 localhost kernel: [ 4473.649927]  [<ffffffff810fdd5c>] ? acct_account_cputime+0x1c/0x20
Sep 24 18:09:35 localhost kernel: [ 4473.652112]  [<ffffffff8101ad59>] ? read_tsc+0x9/0x20
Sep 24 18:09:35 localhost kernel: [ 4473.654302]  [<ffffffff810af09c>] ? ktime_get_ts+0x4c/0xe0
Sep 24 18:09:35 localhost kernel: [ 4473.656493]  [<ffffffff811b4e81>] SyS_select+0xc1/0x100
Sep 24 18:09:35 localhost kernel: [ 4473.658690]  [<ffffffff8172202f>] tracesys+0xe1/0xe6
Sep 24 18:09:35 localhost kernel: [ 4473.660886] Code: 74 17 8b 93 0c 01 00 00 8b 8b 04 01 00 00 d1 fa 39 d1 7d 10 0d 04 03 00 00 48 83 c4 08 5b 5d c3 0f 1f 40 00 48 8b 93 18 02 00 00 <f0> 80 4a 08 01 48 83 c4 08 5b 5d c3 66 66 66 66 2e 0f 1f 84 00 
Sep 24 18:09:35 localhost kernel: [ 4473.665839] RIP  [<ffffffff815f6a97>] datagram_poll+0xf7/0x110
Sep 24 18:09:35 localhost kernel: [ 4473.668276]  RSP <ffff880060c3b998>
Sep 24 18:09:35 localhost kernel: [ 4473.670680] CR2: 0000000000000008
Sep 24 18:09:35 localhost kernel: [ 4473.683977] ---[ end trace 2be3399b73f7c99e ]---