turns out importing pyopenvdb no longer introduces jemalloc, so the original issue FS#66962 no longer applies. as i cannot find another example now, for similar issues in the future please also try to add LD_PRELOAD=/usr/lib/libjemalloc.so for python.

upstream note for --disable-initial-exec-tls: Note that in this case, there will be two malloc implementations operating in the same process, which will almost certainly result in confusing runtime crashes if pointers leak from one implementation to the other.

https://bugs.archlinux.org/task/54483
https://github.com/jemalloc/jemalloc/issues/915

https://bugs.archlinux.org/task/54483
https://bbs.archlinux.org/viewtopic.php?id=227344
https://github.com/jemalloc/jemalloc/issues/915

Apply patch "Only abort on dlsym when necessary." (FS#54447 - [jemalloc] 5.0.0-1 breaks community/neovim)