kernel upgrades on the raspi sometimes end up with not the latest kernel being "activated" in the /boot directory. The reason for this is the kernel rpm postuninstall script of the old kernel that is removed:

postuninstall scriptlet (using /bin/sh):

cp $(ls -1 /boot/kernel-*-*|tail -1) /boot/kernel7.img

cp $(ls -1d /usr/share/raspberrypi2-kernel/*-*/|tail -1)/boot/*.dtb /boot/

cp $(ls -1d /usr/share/raspberrypi2-kernel/*-*/|tail -1)/boot/overlays/*.dtb* /boot/overlays/

It chooses the latest kernel version with "ls -1 /boot/kernel-*-*|tail -1" which fails for kernel versions that have different number of digits in the version string, e.g. 4.9 and 4.14 or 4.14.91 and 4.14.103.

An additional "sort -V" should fix the problem, i.e. "ls -1 /boot/kernel-*-*|sort -V|tail -1".

What do you think?

Best regards,

Thorsten