Apr  6 04:09:02 top CRON[23936]: (root) CMD (  [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -type f -cmin +$(/usr/lib/php5/maxlifetime) -print0 | xargs -n 200 -r -0 rm)
Apr  6 04:12:36 top kernel: [ 4288.558043] BUG: unable to handle kernel NULL pointer dereference at 0000000000000007
Apr  6 04:12:36 top kernel: [ 4288.558052] IP: [<ffffffff814e0c20>] unix_stream_recvmsg+0x1a0/0x580
Apr  6 04:12:36 top kernel: [ 4288.558062] PGD 72800067 PUD 56bb8067 PMD 0 
Apr  6 04:12:36 top kernel: [ 4288.558066] Oops: 0000 [#2] SMP 
Apr  6 04:12:36 top kernel: [ 4288.558069] last sysfs file: /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
Apr  6 04:12:36 top kernel: [ 4288.558073] CPU 1 
Apr  6 04:12:36 top kernel: [ 4288.558075] Modules linked in: btrfs zlib_deflate crc32c libcrc32c ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs xfs exportfs reiserfs xt_TCPMSS xt_tcpmss iptable_mangle binfmt_misc vboxnetadp vboxnetflt vboxdrv ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_tcpudp iptable_filter ip_tables x_tables kvm_amd kvm pppoe pppox snd_hda_codec_atihdmi fbcon tileblit font bitblit softcursor vga16fb vgastate snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy bridge stp snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event radeon snd_seq ttm snd_timer snd_seq_device psmouse drm_kms_helper ppdev snd serio_raw parport_pc i2c_piix4 k8temp drm edac_core i2c_algo_bit edac_mce_amd soundcore snd_page_alloc lp parport usb_storage r8169 mii pata_atiixp ahci
Apr  6 04:12:36 top kernel: [ 4288.558132] Pid: 2776, comm: Xorg Tainted: G      D    2.6.32-17-generic #26-Ubuntu GA-MA69VM-S2
Apr  6 04:12:36 top kernel: [ 4288.558135] RIP: 0010:[<ffffffff814e0c20>]  [<ffffffff814e0c20>] unix_stream_recvmsg+0x1a0/0x580
Apr  6 04:12:36 top kernel: [ 4288.558140] RSP: 0018:ffff88007b60bc08  EFLAGS: 00010246
Apr  6 04:12:36 top kernel: [ 4288.558142] RAX: ffff880037411400 RBX: ffff880037411400 RCX: 0000000000000008
Apr  6 04:12:36 top kernel: [ 4288.558144] RDX: 0000000000000001 RSI: ffff88003741143c RDI: ffff88007b60bc8c
Apr  6 04:12:36 top kernel: [ 4288.558146] RBP: ffff88007b60bce8 R08: 00000000000007c8 R09: 0000000000000001
Apr  6 04:12:36 top kernel: [ 4288.558149] R10: ffff880001e2a100 R11: 0000000000000400 R12: ffff88007b60bd40
Apr  6 04:12:36 top kernel: [ 4288.558151] R13: ffff88007b60bd08 R14: 0000000000000000 R15: 0000000000024cb8
Apr  6 04:12:36 top kernel: [ 4288.558154] FS:  00007f0681c83700(0000) GS:ffff880001c80000(0000) knlGS:00000000f49e5b70
Apr  6 04:12:36 top kernel: [ 4288.558156] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Apr  6 04:12:36 top kernel: [ 4288.558158] CR2: 0000000000000007 CR3: 000000004343d000 CR4: 00000000000006e0
Apr  6 04:12:36 top kernel: [ 4288.558161] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Apr  6 04:12:36 top kernel: [ 4288.558163] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Apr  6 04:12:36 top kernel: [ 4288.558166] Process Xorg (pid: 2776, threadinfo ffff88007b60a000, task ffff880074112de0)
Apr  6 04:12:36 top kernel: [ 4288.558167] Stack:
Apr  6 04:12:36 top kernel: [ 4288.558169]  ffffffff81154840 0000000000000040 ffff8800657bb44c ffff880074112de0
Apr  6 04:12:36 top kernel: [ 4288.558173] <0> ffff8800657bb300 0000000000000000 ffff8800657bb568 ffffffa17b60bab8
Apr  6 04:12:36 top kernel: [ 4288.558176] <0> 0000000100000000 0000000000100100 0000000000200200 ffff8800657bb3b0
Apr  6 04:12:36 top kernel: [ 4288.558180] Call Trace:
Apr  6 04:12:36 top kernel: [ 4288.558187]  [<ffffffff81154840>] ? pollwake+0x0/0x60
Apr  6 04:12:36 top kernel: [ 4288.558193]  [<ffffffff8144cd69>] sock_aio_read+0x159/0x160
Apr  6 04:12:36 top kernel: [ 4288.558197]  [<ffffffff811426aa>] do_sync_read+0xfa/0x140
Apr  6 04:12:36 top kernel: [ 4288.558202]  [<ffffffff810852e0>] ? autoremove_wake_function+0x0/0x40
Apr  6 04:12:36 top kernel: [ 4288.558209]  [<ffffffff810397a9>] ? default_spin_lock_flags+0x9/0x10
Apr  6 04:12:36 top kernel: [ 4288.558214]  [<ffffffff81250756>] ? security_file_permission+0x16/0x20
Apr  6 04:12:36 top kernel: [ 4288.558217]  [<ffffffff81143091>] vfs_read+0x181/0x1a0
Apr  6 04:12:36 top kernel: [ 4288.558222]  [<ffffffff81543148>] ? do_page_fault+0x158/0x3b0
Apr  6 04:12:36 top kernel: [ 4288.558225]  [<ffffffff81143181>] sys_read+0x51/0x80
Apr  6 04:12:36 top kernel: [ 4288.558230]  [<ffffffff810131b2>] system_call_fastpath+0x16/0x1b
Apr  6 04:12:36 top kernel: [ 4288.558232] Code: 89 c3 0f 84 d9 01 00 00 48 8b 7d 90 e8 4a 8b b5 ff 66 90 8b 55 84 85 d2 0f 84 a6 01 00 00 49 8b 7d 28 48 8d 73 38 b9 0c 00 00 00 <f3> a6 0f 85 0b 03 00 00 4d 85 f6 74 39 48 8b 43 10 41 c7 44 24 
Apr  6 04:12:36 top kernel: [ 4288.558259] RIP  [<ffffffff814e0c20>] unix_stream_recvmsg+0x1a0/0x580
Apr  6 04:12:36 top kernel: [ 4288.558262]  RSP <ffff88007b60bc08>
Apr  6 04:12:36 top kernel: [ 4288.558264] CR2: 0000000000000007
Apr  6 04:12:36 top kernel: [ 4288.558267] ---[ end trace 752e3d4d0e379924 ]---
Apr  6 04:12:38 top kernel: [ 4290.817434] VirtualBox[23990]: segfault at 13a83cb0 ip 00007fecb7cb81b5 sp 00007fec9b6978d0 error 4 in libc-2.11.1.so[7fecb7c7f000+178000]
Apr  6 04:12:44 top gdm-simple-slave[24003]: WARNING: Unable to load file '/etc/gdm/custom.conf': No such file or directory
Apr  6 04:12:49 top gnome-session[24029]: WARNING: Could not launch application 'gnome-power-manager.desktop': Unable to start application: Failed to execute child process "gnome-power-manager" (No such file or directory)
Apr  6 04:12:49 top gdm-session-worker[24037]: WARNING: Unable to load file '/etc/gdm/custom.conf': No such file or directory
Apr  6 04:12:50 top gdm-simple-greeter[24035]: devkit-power-gobject-WARNING: Couldn't enumerate devices: The name org.freedesktop.UPower was not provided by any .service files
Apr  6 04:12:50 top gdm-simple-greeter[24035]: devkit-power-gobject-WARNING: Error invoking GetAll() to get properties: The name org.freedesktop.UPower was not provided by any .service files
Apr  6 04:12:50 top gdm-simple-greeter[24035]: Gtk-WARNING: /build/buildd/gtk+2.0-2.20.0/gtk/gtkwidget.c:5636: widget not within a GtkWindow
Apr  6 04:12:53 top gdm-session-worker[24037]: GLib-GObject-CRITICAL: g_value_get_boolean: assertion `G_VALUE_HOLDS_BOOLEAN (value)' failed