I can see this issue with B-5.4 lttng-modules-dkms 2.10.8-1ubuntu2~18.04.3 as well.
/var/lib/dkms/lttng-modules/2.10.8/build/probes/lttng-probe-random.c:31:10: fatal error: trace/events/random.h: No such file or directory
I can see this issue with B-5.4 lttng-modules-dkms 2.10.8- 1ubuntu2~ 18.04.3 as well.
/var/lib/ dkms/lttng- modules/ 2.10.8/ build/probes/ lttng-probe- random. c:31:10: fatal error: trace/events/ random. h: No such file or directory