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I could really use some help reading a kernel oops dmesg. I get this error once every few hours. Sometimes the system freezes; sometimes not.

I would appreciate a swift kick in the right direction.

RAM & HDDs are clean.

[ 8458.816207] BUG: unable to handle kernel NULL pointer dereference at 000000000000026a
[ 8458.816362] IP: [<ffffffff810ba28f>] get_page_from_freelist+0x3c3/0x665
[ 8458.816481] PGD 7b916067 PUD 7b3e6067 PMD 0 
[ 8458.816567] Oops: 0000 [#1] SMP 
[ 8458.816632] CPU 0 
[ 8458.816667] Modules linked in: w83627ehf hwmon_vid loop snd_hda_codec_realtek i915 drm_kms_helper drm snd_hda_intel coretemp snd_hda_codec i2c_i801 psmouse evdev i2c_algo_bit iTCO_wdt serio_raw i2c_core snd_hwdep snd_pcm pcspkr snd_timer snd iTCO_vendor_support soundcore snd_page_alloc video mperf parport_pc parport processor button thermal_sys ext4 crc16 jbd2 mbcache dm_mod raid456 async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq raid1 md_mod sg sd_mod crc_t10dif usbhid hid sata_promise ahci libahci libata uhci_hcd scsi_mod ehci_hcd r8169 usbcore mii usb_common [last unloaded: scsi_wait_scan]
[ 8458.817824] 
[ 8458.817854] Pid: 1513, comm: jbd2/dm-3-8 Not tainted 3.2.0-3-amd64 #1                  /D525MW
[ 8458.818005] RIP: 0010:[<ffffffff810ba28f>]  [<ffffffff810ba28f>] get_page_from_freelist+0x3c3/0x665
[ 8458.818158] RSP: 0018:ffff8800369cda10  EFLAGS: 00010002
[ 8458.818245] RAX: 0000000000000246 RBX: ffff88007ec16540 RCX: 0000000000000000
[ 8458.818360] RDX: 0000000000000246 RSI: 0000000000000000 RDI: ffff88007efec700
[ 8458.818475] RBP: ffff88007efec700 R08: 0000000000000000 R09: 0000000000006b25
[ 8458.818589] R10: 0000000000000001 R11: 0000000000003693 R12: 0000000000000000
[ 8458.818704] R13: ffffea0000dddec8 R14: ffff88007ec16570 R15: 0000000000000246
[ 8458.818820] FS:  0000000000000000(0000) GS:ffff88007ec00000(0000) knlGS:0000000000000000
[ 8458.818950] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 8458.819043] CR2: 000000000000026a CR3: 0000000079980000 CR4: 00000000000006f0
[ 8458.819158] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 8458.819273] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 8458.819388] Process jbd2/dm-3-8 (pid: 1513, threadinfo ffff8800369cc000, task ffff8800799e08b0)
[ 8458.819526] Stack:
[ 8458.819562]  ffff88007670c170 0000000000000000 0000000000000000 0000000100020058
[ 8458.819701]  ffff880000000041 0000000000000001 ffff88007efedc08 ffff88007efedc00
[ 8458.819838]  00000000371570c0 0000000000000030 ffff88007efedc08 0000000000000001
[ 8458.819976] Call Trace:
[ 8458.820024]  [<ffffffff810ba7ba>] ? __alloc_pages_nodemask+0x128/0x726
[ 8458.820042]  [<ffffffff8111cefc>] ? __block_write_full_page+0x1fb/0x2d5
[ 8458.820042]  [<ffffffffa019ee4a>] ? ext4_get_block_write+0xa/0xa [ext4]
[ 8458.820042]  [<ffffffff8111bc98>] ? __find_get_block_slow+0x43/0x15b
[ 8458.820042]  [<ffffffff810e4094>] ? alloc_pages_current+0xb2/0xcc
[ 8458.820042]  [<ffffffff810b48c5>] ? find_or_create_page+0x34/0x78
[ 8458.820042]  [<ffffffff8111cabd>] ? __getblk+0x116/0x212
[ 8458.820042]  [<ffffffffa018eef3>] ? jbd2_journal_get_descriptor_buffer+0x32/0x8e [jbd2]
[ 8458.820042]  [<ffffffffa01893bd>] ? jbd2_journal_commit_transaction+0x598/0x1057 [jbd2]
[ 8458.820042]  [<ffffffff8100d02f>] ? load_TLS+0x7/0xa
[ 8458.820042]  [<ffffffff8100d6a3>] ? __switch_to+0x133/0x258
[ 8458.820042]  [<ffffffffa018d0ae>] ? kjournald2+0xc0/0x20a [jbd2]
[ 8458.820042]  [<ffffffff8105f5f3>] ? add_wait_queue+0x3c/0x3c
[ 8458.820042]  [<ffffffffa018cfee>] ? commit_timeout+0x5/0x5 [jbd2]
[ 8458.820042]  [<ffffffff8105efad>] ? kthread+0x76/0x7e
[ 8458.820042]  [<ffffffff81351df4>] ? kernel_thread_helper+0x4/0x10
[ 8458.820042]  [<ffffffff8105ef37>] ? kthread_worker_fn+0x139/0x139
[ 8458.820042]  [<ffffffff81351df0>] ? gs_change+0x13/0x13
[ 8458.820042] Code: 00 72 94 8b 54 24 40 31 f6 48 89 ef f7 da e8 d1 f7 00 00 66 ff 45 60 8b 44 24 7c 03 44 24 40 89 03 4d 39 6d 00 0f 84 fb 01 00 00 <83> 7c 24 5c 00 74 06 4d 8b 66 08 eb 03 4d 8b 26 49 83 ec 20 49 
[ 8458.820042] RIP  [<ffffffff810ba28f>] get_page_from_freelist+0x3c3/0x665
[ 8458.820042]  RSP <ffff8800369cda10>
[ 8458.820042] CR2: 000000000000026a
[ 8458.894413] ---[ end trace b62da94532383804 ]---
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