Comment # 9 on bug 909193 from Stefan Seyfried

The question is: was the dracut update installed before you first pm-hibernated
your machine to have it then show the issue?

If not, the hibernate might have silently corrupted the file system in a way
which did cause the kernel to crash (and even though IMO the kernel should not
be allowed to crash even in case of corruption, this beast sometimes just does
not do what I want it to do! :-)

My guess would be that this really is the issue: you had the old dracut when
hibernating for the first time. Now with the new dracut the problem is gone

=> bug probably fixed.

A reboot into rescue and a thorough file system check on all your file systems
cannot hurt, though.