[CentOS] C7: kernel-3.10.0-693.2.2, huh?

Wed Oct 4 20:12:43 UTC 2017
m.roth at 5-cent.us <m.roth at 5-cent.us>

Ok... I just fully updated a user's machine. And got a kernel panic on
reboot. So, having run into this earlier this year, I tried to reinstall
the kernel.
yum reinstall kernel-3.10.0-693.2.2.el7.x86_64
Installed package kernel-3.10.0-693.2.2.el7.x86_64 (from updates) not
Error: Nothing to do

Huh? Anyone?