Each time I upgrade kernel on slackware-current with kernel-4.14.x, generally the system segfaults on the first reboot. After that, sometimes, it boots normally on second reboot, but there is no rule and no reproducibility on the process: see the reason why slackware-current moved back to kernel-4.9.x series which stable. see the thread on slackware linuxquestions forum: https://www.linuxquestions.org/questions/slackware-14/strange-behavior-with-kernel-4-14-x-4175618207/
it happens especially on 32-bit systems.
BUG: unable to handle kernel paging request at 9b6bf61 IP: kmem_cache_alloc+0xa3/0x1f0
Created attachment 261035 [details] kernel-4.14.4 segfault
You reported this at the place where bugs for the bug tracker itself should be reported. I assume that noone applicable will look at your bug here. Consider deleting/ closing it here and reporting it at the correct place. For this reasons, I suggest to close this report here.