Unable to open "librpm.so" (librpm.so: cannot open shared object file: No such file or directory), missing debuginfos notifications will not be displayed.
I was, and it meant that gdb couldn't suggest which package I had to debuginfo-install to get the
misisng debug information and symbols.
I did a locate for librpm.so and found librpm.so.0 and friends in /usr/lib. Guessing that's where librpm.so was supposed to be, I did "yum whatprovides /usr/lib/librpm.so" and that told me rpm-devel-4.7.0, which I then installed.
After that, I ran gdb on the process I wanted to inspect again, and ta-da, I am finally told the name of the package which I need to install to get my debugging symbols. Copy, paste, yay.