It's likely that this was either fixed upstream or the root cause is from a patch that was put on the 4.13 kernels that the 4.14 kernels don't have.
Nov 05 22:15:30 lakshmi kernel: Linux version 4.13.0-16-generic (buildd@lcy01-02) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu2)) #19-Ubuntu SMP Wed Oct 11 18:35:14 UTC 2017 (Ubuntu 4.13.0-16.19-generic 4.13.4)
Nov 06 04:19:13 lakshmi kernel: BUG: unable to handle kernel NULL pointer dereference at (null)
Nov 06 04:53:36 lakshmi kernel: Linux version 4.13.0-16-generic (buildd@lcy01-02) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu2)) #19-Ubuntu SMP Wed Oct 11 18:35:14 UTC 2017 (Ubuntu 4.13.0-16.19-generic 4.13.4)
Nov 12 14:21:07 lakshmi kernel: BUG: unable to handle kernel paging request at 0000000000001000
Nov 16 08:03:01 lakshmi kernel: Linux version 4.13.0-16-generic (buildd@lcy01-02) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu2)) #19-Ubuntu SMP Wed Oct 11 18:35:14 UTC 2017 (Ubuntu 4.13.0-16.19-generic 4.13.4)
Nov 23 06:20:38 lakshmi kernel: BUG: unable to handle kernel NULL pointer dereference at (null)
Nov 23 07:12:24 lakshmi kernel: Linux version 4.13.0-17-generic (buildd@lcy01-amd64-011) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu3)) #20-Ubuntu SMP Mon Nov 6 10:04:08 UTC 2017 (Ubuntu 4.13.0-17.20-generic 4.13.8)
Nov 28 06:45:45 lakshmi kernel: Linux version 4.14.2-041402-generic (kernel@tangerine) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu3)) #201711240330 SMP Fri Nov 24 08:32:52 UTC 2017
Dec 01 19:56:41 lakshmi kernel: Linux version 4.14.3-041403-generic (kernel@tangerine) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu3)) #201711300431 SMP Thu Nov 30 09:32:55 UTC 2017
Dec 08 14:14:31 lakshmi kernel: Linux version 4.14.4-041404-generic (kernel@tangerine) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu3)) #201712050630 SMP Tue Dec 5 11:34:06 UTC 2017
Dec 13 06:32:14 lakshmi kernel: Linux version 4.14.5-041405-generic (kernel@kathleen) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu3)) #201712101332 SMP Sun Dec 10 13:33:10 UTC 2017
It's likely that this was either fixed upstream or the root cause is from a patch that was put on the 4.13 kernels that the 4.14 kernels don't have.
Nov 05 22:15:30 lakshmi kernel: Linux version 4.13.0-16-generic (buildd@lcy01-02) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu2)) #19-Ubuntu SMP Wed Oct 11 18:35:14 UTC 2017 (Ubuntu 4.13.0- 16.19-generic 4.13.4)
Nov 06 04:19:13 lakshmi kernel: BUG: unable to handle kernel NULL pointer dereference at (null)
Nov 06 04:53:36 lakshmi kernel: Linux version 4.13.0-16-generic (buildd@lcy01-02) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu2)) #19-Ubuntu SMP Wed Oct 11 18:35:14 UTC 2017 (Ubuntu 4.13.0- 16.19-generic 4.13.4)
Nov 12 14:21:07 lakshmi kernel: BUG: unable to handle kernel paging request at 0000000000001000
Nov 16 08:03:01 lakshmi kernel: Linux version 4.13.0-16-generic (buildd@lcy01-02) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu2)) #19-Ubuntu SMP Wed Oct 11 18:35:14 UTC 2017 (Ubuntu 4.13.0- 16.19-generic 4.13.4)
Nov 23 06:20:38 lakshmi kernel: BUG: unable to handle kernel NULL pointer dereference at (null)
Nov 23 07:12:24 lakshmi kernel: Linux version 4.13.0-17-generic (buildd@ lcy01-amd64- 011) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu3)) #20-Ubuntu SMP Mon Nov 6 10:04:08 UTC 2017 (Ubuntu 4.13.0- 17.20-generic 4.13.8)
Nov 28 06:45:45 lakshmi kernel: Linux version 4.14.2- 041402- generic (kernel@tangerine) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu3)) #201711240330 SMP Fri Nov 24 08:32:52 UTC 2017 041403- generic (kernel@tangerine) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu3)) #201711300431 SMP Thu Nov 30 09:32:55 UTC 2017 041404- generic (kernel@tangerine) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu3)) #201712050630 SMP Tue Dec 5 11:34:06 UTC 2017 041405- generic (kernel@kathleen) (gcc version 7.2.0 (Ubuntu 7.2.0-8ubuntu3)) #201712101332 SMP Sun Dec 10 13:33:10 UTC 2017
Dec 01 19:56:41 lakshmi kernel: Linux version 4.14.3-
Dec 08 14:14:31 lakshmi kernel: Linux version 4.14.4-
Dec 13 06:32:14 lakshmi kernel: Linux version 4.14.5-