I found this in my system log:
[ 14.845195] **********************************************************
[ 14.845196] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 14.845196] ** **
[ 14.845196] ** trace_printk() being used. Allocating extra memory. **
[ 14.845197] ** **
[ 14.845197] ** This means that this is a DEBUG kernel and it is **
[ 14.845197] ** unsafe for production use. **
[ 14.845197] ** **
[ 14.845198] ** If you see this message and you are not debugging **
[ 14.845198] ** the kernel, report this immediately to your vendor! **
[ 14.845198] ** **
[ 14.845198] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE **
[ 14.845199] **********************************************************
It is labelled "unsafe for production."
But I got my kernel from the LTS repository:
$ uname -a
Linux ubuntupc 4.15.0-66-generic #75-Ubuntu SMP Tue Oct 1 05:24:09 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
It is from linux-image-4.15.0-66-generic (4.15.0-66.75)
Why did a debug kernel end up in Ubuntu's repository?
OS: Ubuntu 18.04.3 LTS
Video Driver: nvidia-driver-440
dpkg -l | grep terminator
maybe bugs.launchpad.net/ubuntu/+source/terminator/+bug/1786467