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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1730374 Title: NULL pointer dereference during writeback To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1730374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
