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[ 52.772608] systemd-logind[1816]: New seat seat0.
[ 52.773140] systemd-logind[1816]: Watching system buttons on /dev/input/event1 (Power Button)
[ 52.773192] systemd-logind[1816]: Watching system buttons on /dev/input/event3 (Video Bus)
[ 52.773240] systemd-logind[1816]: Watching system buttons on /dev/input/event0 (Power Button)
[ 52.777004] systemd-logind[1816]: Failed to start unit user@1000.service: Unknown unit: user@1000.service
[ 52.777047] systemd-logind[1816]: Failed to start user service: Unknown unit: user@1000.service
[ 52.780140] systemd-logind[1816]: New session c1 of user wynton.
[36502.114176] systemd-logind[1816]: Failed to start unit user@33.service: Unknown unit: user@33.service
[36502.115897] systemd-logind[1816]: Failed to start user service: Unknown unit: user@33.service
[36502.122081] systemd-logind[1816]: New session 31 of user www-data.
[36502.138935] systemd-logind[1816]: Existing logind session ID 31 used by new audit session, ignoring
[36502.143064] systemd-logind[1816]: New session c2 of user www-data.
[60489.908660] perf interrupt took too long (2512 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
[75014.700905] systemd-logind[1816]: New session 65 of user wynton.
[97337.645360] usb 2-1.2: USB disconnect, device number 3
[97337.645559] usblp0: removed
[122253.899865] systemd-logind[1816]: New session 105 of user www-data.
[122253.907428] systemd-logind[1816]: Existing logind session ID 105 used by new audit session, ignoring
[122253.910989] systemd-logind[1816]: New session c3 of user www-data.
[175206.429479] vb2: counters for queue ffff8800c661f028, buffer 12: UNBALANCED!
[175206.429484] vb2: buf_init: 1 buf_cleanup: 1 buf_prepare: 42 buf_finish: 41
[175206.429486] vb2: buf_queue: 41 buf_done: 41
[175206.429488] vb2: alloc: 1 put: 1 prepare: 41 finish: 41 mmap: 0
[175206.429489] vb2: get_userptr: 0 put_userptr: 0
[175206.429491] vb2: attach_dmabuf: 0 detach_dmabuf: 0 map_dmabuf: 0 unmap_dmabuf: 0
[175206.429493] vb2: get_dmabuf: 0 num_users: 0 vaddr: 42 cookie: 83
[178748.303066] vb2: counters for queue ffff8800c661f028, buffer 12: UNBALANCED!
[178748.303071] vb2: buf_init: 1 buf_cleanup: 1 buf_prepare: 42 buf_finish: 41
[178748.303073] vb2: buf_queue: 41 buf_done: 41
[178748.303075] vb2: alloc: 1 put: 1 prepare: 41 finish: 41 mmap: 0
[178748.303076] vb2: get_userptr: 0 put_userptr: 0
[178748.303078] vb2: attach_dmabuf: 0 detach_dmabuf: 0 map_dmabuf: 0 unmap_dmabuf: 0
[178748.303080] vb2: get_dmabuf: 0 num_users: 0 vaddr: 42 cookie: 83
[200006.542456] vb2: counters for queue ffff8800c661f028, buffer 12: UNBALANCED!
[200006.542461] vb2: buf_init: 1 buf_cleanup: 1 buf_prepare: 42 buf_finish: 41
[200006.542462] vb2: buf_queue: 41 buf_done: 41
[200006.542464] vb2: alloc: 1 put: 1 prepare: 41 finish: 41 mmap: 0
[200006.542466] vb2: get_userptr: 0 put_userptr: 0
[200006.542468] vb2: attach_dmabuf: 0 detach_dmabuf: 0 map_dmabuf: 0 unmap_dmabuf: 0
[200006.542469] vb2: get_dmabuf: 0 num_users: 1 vaddr: 42 cookie: 83
[203830.326318] vb2: counters for queue ffff8800c661f028, buffer 22: UNBALANCED!
[203830.326323] vb2: buf_init: 1 buf_cleanup: 1 buf_prepare: 74 buf_finish: 73
[203830.326325] vb2: buf_queue: 73 buf_done: 73
[203830.326327] vb2: alloc: 1 put: 1 prepare: 73 finish: 73 mmap: 0
[203830.326328] vb2: get_userptr: 0 put_userptr: 0
[203830.326330] vb2: attach_dmabuf: 0 detach_dmabuf: 0 map_dmabuf: 0 unmap_dmabuf: 0
[203830.326332] vb2: get_dmabuf: 0 num_users: 0 vaddr: 74 cookie: 147
[208179.783071] systemd-logind[1816]: New session 179 of user www-data.
[208179.804266] systemd-logind[1816]: Existing logind session ID 179 used by new audit session, ignoring
[208179.809360] systemd-logind[1816]: New session c4 of user www-data.
[208418.867073] vb2: counters for queue ffff8800c661f028, buffer 12: UNBALANCED!
[208418.867079] vb2: buf_init: 1 buf_cleanup: 1 buf_prepare: 42 buf_finish: 41
[208418.867080] vb2: buf_queue: 41 buf_done: 41
[208418.867082] vb2: alloc: 1 put: 1 prepare: 41 finish: 41 mmap: 0
[208418.867084] vb2: get_userptr: 0 put_userptr: 0
[208418.867086] vb2: attach_dmabuf: 0 detach_dmabuf: 0 map_dmabuf: 0 unmap_dmabuf: 0
[208418.867088] vb2: get_dmabuf: 0 num_users: 0 vaddr: 42 cookie: 83
[226369.158473] vb2: counters for queue ffff8800c661f028, buffer 12: UNBALANCED!
[226369.158478] vb2: buf_init: 1 buf_cleanup: 1 buf_prepare: 42 buf_finish: 41
[226369.158480] vb2: buf_queue: 41 buf_done: 41
[226369.158482] vb2: alloc: 1 put: 1 prepare: 41 finish: 41 mmap: 0
[226369.158483] vb2: get_userptr: 0 put_userptr: 0
[226369.158485] vb2: attach_dmabuf: 0 detach_dmabuf: 0 map_dmabuf: 0 unmap_dmabuf: 0
[226369.158487] vb2: get_dmabuf: 0 num_users: 0 vaddr: 42 cookie: 83
[228527.468073] vb2: counters for queue ffff8800c661f028, buffer 30: UNBALANCED!
[228527.468078] vb2: buf_init: 1 buf_cleanup: 1 buf_prepare: 11 buf_finish: 10
[228527.468080] vb2: buf_queue: 10 buf_done: 10
[228527.468082] vb2: alloc: 1 put: 1 prepare: 10 finish: 10 mmap: 0
[228527.468084] vb2: get_userptr: 0 put_userptr: 0
[228527.468085] vb2: attach_dmabuf: 0 detach_dmabuf: 0 map_dmabuf: 0 unmap_dmabuf: 0
[228527.468087] vb2: get_dmabuf: 0 num_users: 0 vaddr: 11 cookie: 21
[229875.770779] usb 2-1.2: new high-speed USB device number 4 using ehci-pci
[229875.864343] usb 2-1.2: New USB device found, idVendor=04e8, idProduct=3272
[229875.864349] usb 2-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[229875.864352] usb 2-1.2: Product: Samsung CLP-300 Series
[229875.864355] usb 2-1.2: Manufacturer: Samsung
[229875.864357] usb 2-1.2: SerialNumber: 3H21BAFQ221123X.
[229875.865411] usblp 2-1.2:1.0: usblp0: USB Bidirectional printer dev 4 if 0 alt 0 proto 2 vid 0x04E8 pid 0x3272
[233896.764496] vb2: counters for queue ffff8800c661f028, buffer 12: UNBALANCED!
[233896.764501] vb2: buf_init: 1 buf_cleanup: 1 buf_prepare: 42 buf_finish: 41
[233896.764503] vb2: buf_queue: 41 buf_done: 41
[233896.764505] vb2: alloc: 1 put: 1 prepare: 41 finish: 41 mmap: 0
[233896.764506] vb2: get_userptr: 0 put_userptr: 0
[233896.764508] vb2: attach_dmabuf: 0 detach_dmabuf: 0 map_dmabuf: 0 unmap_dmabuf: 0
[233896.764510] vb2: get_dmabuf: 0 num_users: 0 vaddr: 42 cookie: 83
[250689.424040] vb2: counters for queue ffff8800c661f028, buffer 12: UNBALANCED!
[250689.424045] vb2: buf_init: 1 buf_cleanup: 1 buf_prepare: 42 buf_finish: 41
[250689.424047] vb2: buf_queue: 41 buf_done: 41
[250689.424049] vb2: alloc: 1 put: 1 prepare: 41 finish: 41 mmap: 0
[250689.424050] vb2: get_userptr: 0 put_userptr: 0
[250689.424052] vb2: attach_dmabuf: 0 detach_dmabuf: 0 map_dmabuf: 0 unmap_dmabuf: 0
[250689.424054] vb2: get_dmabuf: 0 num_users: 0 vaddr: 42 cookie: 83
[255522.765573] perf interrupt took too long (5032 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
[257988.102784] BUG: unable to handle kernel NULL pointer dereference
[257988.102823] vb2: counters for queue ffff8800c661f028: UNBALANCED!
[257988.102824] vb2: setup: 1 start_streaming: 1 stop_streaming: 1
[257988.102825] vb2: wait_prepare: 3459 wait_finish: 3460
[257988.110843] at (null)
[257988.114753] IP: [<ffffffff813aa8d0>] sg_next+0x0/0x40
[257988.116693] PGD 0
[257988.118622] Oops: 0000 [#1] SMP
[257988.120546] Modules linked in: intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm tda8290(OE) tda10048(OE) crct10dif_pclmul crc32_pclmul cx23885(OE) altera_ci(OE) tda18271(OE) altera_stapl(OE) ghash_clmulni_intel videobuf2_dvb(OE) videobuf2_dma_sg(OE) tveeprom(OE) cx2341x(OE) dvb_core(OE) cryptd rc_core(OE) videobuf2_memops(OE) videobuf2_core(OE) v4l2_common(OE) videodev(OE) media(OE) snd_pcm snd_timer snd usblp serio_raw soundcore i915 video drm_kms_helper drm mei_me mei i2c_algo_bit mac_hid shpchp lpc_ich parport_pc ppdev lp parport raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor e1000e ahci raid6_pq raid1 ptp raid0 multipath linear libahci pps_core
[257988.132782] CPU: 0 PID: 25487 Comm: vb2-cx23885[0] Tainted: G OE 3.16.0-24-generic #32-Ubuntu
[257988.134817] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./H61M-GS, BIOS P2.00 03/08/2013
[257988.136821] task: ffff8800c67b3d20 ti: ffff880003f70000 task.ti: ffff880003f70000
[257988.138819] RIP: 0010:[<ffffffff813aa8d0>] [<ffffffff813aa8d0>] sg_next+0x0/0x40
[257988.140788] RSP: 0018:ffff880003f73da0 EFLAGS: 00010202
[257988.142734] RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffff88011913a098
[257988.144647] RDX: 0000000000005e00 RSI: 0000000000000000 RDI: 0000000000000000
[257988.146552] RBP: ffff880003f73df0 R08: 00000000ffffffff R09: 00000000fffffffa
[257988.148410] R10: 0000000000000000 R11: ffff8800c661f028 R12: ffff880036273000
[257988.150265] R13: ffff8800c65a1ca8 R14: ffff8800c8e35138 R15: 0000000000000001
[257988.152079] FS: 0000000000000000(0000) GS:ffff88011f200000(0000) knlGS:0000000000000000
[257988.153875] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[257988.155652] CR2: 0000000000000000 CR3: 0000000001c13000 CR4: 00000000000407f0
[257988.157420] Stack:
[257988.159179] ffffffffc045374c ffff88011913a098 ffffffff81c2e5c0 ffff8800c65a0000
[257988.160952] 0000000000000000 ffff880036273000 ffff880036270858 ffff880036273000
[257988.162724] ffff8800367f8060 ffff8800c661f028 ffff880003f73e00 ffffffffc0454e19
[257988.164476] Call Trace:
[257988.166186] [<ffffffffc045374c>] ? cx23885_buf_prepare+0xcc/0x190 [cx23885]
[257988.167904] [<ffffffffc0454e19>] buffer_prepare+0x19/0x20 [cx23885]
[257988.169574] [<ffffffffc03d47ee>] __buf_prepare+0x2be/0x380 [videobuf2_core]
[257988.171231] [<ffffffffc03d5f5b>] vb2_internal_qbuf+0x1fb/0x250 [videobuf2_core]
[257988.172849] [<ffffffffc03d60de>] vb2_thread+0x12e/0x420 [videobuf2_core]
[257988.174448] [<ffffffffc03d5fb0>] ? vb2_internal_qbuf+0x250/0x250 [videobuf2_core]
[257988.176041] [<ffffffff81094aeb>] kthread+0xdb/0x100
[257988.177615] [<ffffffff81094a10>] ? kthread_create_on_node+0x1c0/0x1c0
[257988.179214] [<ffffffff81787c3c>] ret_from_fork+0x7c/0xb0
[257988.180808] [<ffffffff81094a10>] ? kthread_create_on_node+0x1c0/0x1c0
[257988.182428] Code: 44 00 00 31 c0 c3 0f 1f 44 00 00 55 c7 47 10 00 00 00 00 89 57 0c 48 89 37 48 89 e5 89 4f 08 5d c3 66 2e 0f 1f 84 00 00 00 00 00 <f6> 07 02 55 48 89 e5 75 27 48 8b 57 20 48 8d 47 20 f6 c2 01 75
[257988.185898] RIP [<ffffffff813aa8d0>] sg_next+0x0/0x40
[257988.187568] RSP <ffff880003f73da0>
[257988.189189] CR2: 0000000000000000
[257988.200006] ---[ end trace 71f920d1ab323ab2 ]---
[261441.249191] systemd-logind[1816]: New session 225 of user wynton.
[262250.547696] systemd-logind[1816]: New session 227 of user wynton.
[295604.561798] systemd-logind[1816]: New session 255 of user www-data.
[295604.572559] systemd-logind[1816]: Existing logind session ID 255 used by new audit session, ignoring
[295604.577806] systemd-logind[1816]: New session c5 of user www-data.
[295604.758376] audit: type=1400 audit(1416807909.617:22): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/cups/backend/cups-pdf" pid=30358 comm="apparmor_parser"
[295604.760793] audit: type=1400 audit(1416807909.621:23): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=30358 comm="apparmor_parser"
[295604.771282] audit: type=1400 audit(1416807909.633:24): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="third_party" pid=30358 comm="apparmor_parser"
[386498.174222] SGI XFS with ACLs, security attributes, realtime, large block/inode numbers, no debug enabled
[386498.186702] JFS: nTxBlock = 8192, nTxLock = 65536
[386498.201005] ntfs: driver 2.1.30 [Flags: R/O MODULE].
[386498.221617] QNX4 filesystem 0.2.3 registered.
[386498.258783] Btrfs loaded
[386498.330017] EXT4-fs (sda2): unable to read superblock
[386498.332569] EXT4-fs (sda2): unable to read superblock
[386498.335022] EXT4-fs (sda2): unable to read superblock
[386498.337611] FAT-fs (sda2): bogus number of reserved sectors
[386498.338765] FAT-fs (sda2): Can't find a valid FAT filesystem
[386498.344334] XFS (sda2): Invalid superblock magic number
[386498.348331] FAT-fs (sda2): bogus number of reserved sectors
[386498.349515] FAT-fs (sda2): Can't find a valid FAT filesystem
[386498.354344] MINIX-fs: unable to read superblock
[386498.359349] attempt to access beyond end of device
[386498.360406] sda2: rw=16, want=3, limit=2
[386498.361569] hfsplus: unable to find HFS+ superblock
[386498.364248] qnx4: no qnx4 filesystem (no root dir).
[386498.366625] You didn't specify the type of your ufs filesystem

mount -t ufs -o ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...

>>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old
[386498.374330] hfs: can't find a HFS filesystem on dev sda2
[386506.453152] EXT4-fs (sda2): unable to read superblock
[386506.455116] EXT4-fs (sda2): unable to read superblock
[386506.456950] EXT4-fs (sda2): unable to read superblock
[386506.462324] FAT-fs (sda2): bogus number of reserved sectors
[386506.463201] FAT-fs (sda2): Can't find a valid FAT filesystem
[386506.467543] XFS (sda2): Invalid superblock magic number
[386506.470744] FAT-fs (sda2): bogus number of reserved sectors
[386506.471572] FAT-fs (sda2): Can't find a valid FAT filesystem
[386506.475623] MINIX-fs: unable to read superblock
[386506.477386] attempt to access beyond end of device
[386506.478162] sda2: rw=16, want=3, limit=2
[386506.479004] hfsplus: unable to find HFS+ superblock
[386506.480963] qnx4: no qnx4 filesystem (no root dir).
[386506.482709] You didn't specify the type of your ufs filesystem

mount -t ufs -o ufstype=sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...

>>>WARNING<<< Wrong ufstype may corrupt your filesystem, default is ufstype=old
[386506.488573] hfs: can't find a HFS filesystem on dev sda2
[386507.927738] systemd-logind[1816]: New session 328 of user www-data.
[386507.941452] systemd-logind[1816]: Existing logind session ID 328 used by new audit session, ignoring
[386507.947967] systemd-logind[1816]: New session c6 of user www-data.
[432620.226391] systemd-logind[1816]: New session 372 of user wynton.
[433530.896022] systemd-logind[1816]: New session 373 of user wynton.

wynton@Server:~$ lspci
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b5)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation H61 Express Chipset Family LPC Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family SATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
01:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
03:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI Video and Audio Decoder (rev 02)
wynton@Server:~$