Complete error log:

SMART Error Log Version: 1
Warning: ATA error count 8 inconsistent with error log pointer 1
ATA Error Count: 8 (device log contains only the most recent five errors)
   CR = Command Register [HEX]
   FR = Features Register [HEX]
   SC = Sector Count Register [HEX]
   SN = Sector Number Register [HEX]
   CL = Cylinder Low Register [HEX]
   CH = Cylinder High Register [HEX]
   DH = Device/Head Register [HEX]
   DC = Device Command Register [HEX]
   ER = Error register [HEX]
   ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.

Error 8 occurred at disk power-on lifetime: 33096 hours (1379 days + 0 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 00 d6 ba 04 e1  Error: UNC at LBA = 0x0104bad6 = 17087190

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  c8 00 08 d0 ba 04 01 08      00:53:36.396  READ DMA
  c8 00 08 a0 0b 00 00 08      00:53:36.395  READ DMA
  c8 00 80 d8 ba 04 01 08      00:53:36.381  READ DMA
  ec 00 00 00 00 00 00 08      00:53:36.372  IDENTIFY DEVICE
  ef 03 46 00 00 00 00 08      00:53:36.365  SET FEATURES [Set transfer mode]

Error 7 occurred at disk power-on lifetime: 33096 hours (1379 days + 0 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 00 d6 ba 04 e1  Error: UNC at LBA = 0x0104bad6 = 17087190

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  c8 00 40 98 ba 04 01 08      00:53:33.440  READ DMA
  c8 00 08 98 0b 00 00 08      00:53:33.440  READ DMA
  c8 00 20 78 ba 04 01 08      00:53:33.440  READ DMA
  c8 00 08 90 0b 00 00 08      00:53:33.440  READ DMA
  c8 00 08 70 ba 04 01 08      00:53:33.439  READ DMA

Error 6 occurred at disk power-on lifetime: 33096 hours (1379 days + 0 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 00 d6 ba 04 e1  Error: UNC at LBA = 0x0104bad6 = 17087190

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  c8 00 f0 80 ba 04 01 08      00:43:52.768  READ DMA
  c8 00 08 78 ba 04 01 08      00:43:52.768  READ DMA
  c8 00 08 70 ba 04 01 08      00:43:52.768  READ DMA
  c8 00 f0 58 b9 04 01 08      00:43:52.766  READ DMA
  c8 00 08 50 b9 04 01 08      00:43:52.766  READ DMA

Error 5 occurred at disk power-on lifetime: 33096 hours (1379 days + 0 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 00 d6 ba 04 e1  Error: UNC at LBA = 0x0104bad6 = 17087190

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  c8 00 f0 80 ba 04 01 08      00:41:11.767  READ DMA
  c8 00 08 78 ba 04 01 08      00:41:11.767  READ DMA
  c8 00 08 70 ba 04 01 08      00:41:11.766  READ DMA
  c8 00 f0 58 b9 04 01 08      00:41:11.765  READ DMA
  c8 00 08 50 b9 04 01 08      00:41:11.765  READ DMA

Error 4 occurred at disk power-on lifetime: 33096 hours (1379 days + 0 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 00 d6 ba 04 e1  Error: UNC at LBA = 0x0104bad6 = 17087190

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  c8 00 f0 80 ba 04 01 08      00:38:05.400  READ DMA
  c8 00 08 78 ba 04 01 08      00:38:05.399  READ DMA
  c8 00 08 70 ba 04 01 08      00:38:05.399  READ DMA
  c8 00 f0 58 b9 04 01 08      00:38:05.398  READ DMA
  c8 00 08 50 b9 04 01 08      00:38:05.397  READ DMA