Bruce Momjian <bruce@xxxxxxxxxx> writes: > On Fri, Nov 13, 2020 at 12:06:34PM -0500, Jeremy Wilson wrote: >> Not sure what you mean by this - I’ve installed the postgis packages for 9.5 and 13 and the extensions are installed and working in 9.5, but I’m not doing anything but initdb and then pg_upgrade for 13. > I think he is asking about shared_preload_libraries, > local_preload_libraries, and session_preload_libraries. Yeah, but if Jeremy isn't touching the new cluster's config between initdb and pg_upgrade, those won't be set. I'm kind of baffled at this point. It seems pretty likely that this is related to the v13 postgis problems we've heard a few reports of, but the symptoms are a lot different. Best advice I can give is to go inquire on the postgis mailing lists as to whether they've figured out the "free(): invalid pointer" issue. (I assume that dropping postgis from the source DB is not an option...) regards, tom lane
