Comment 5 for bug 1951126

We could say "make tgt-rbd and tgt-glusterfs mutually exclusive" and that would fix the immediate issue, but TBH there might be many other cases which just do not happen to have an autopkgtest triggering it.
For now - until someone has a better idea how to prevent this kind of issues - all we can do is disable tcmalloc in glusterfs.
That will make 10.0 less of an interrupting upload and we can enable it later once we have a better approach to prevent such issues.

TL;DR - using tcmalloc in a lib (like libgf* of glusterfs) is calling for issues as anyone loading it late or multiple of them will likely crash the program.