[the8472]

That is not a good thing. RH frankenkernels can contain subtle breakage. E.g. the Go and Rust standard libraries needed to add workarounds because certain RH versions implemented copy_file_range in a manner that returns error codes inconsistent with the documented API because patches were only backported for some filesystems but not for others. These issues never occurred on mainline.

And for the same reasons that the affected users chose a "stable" and "supported" distro they were also unable to upgrade to one where the issue was fixed.

[dralley]

True, but it is a matter of weighing risks. I can't find it now, but I remember a few years ago there was a news story about how an update to Ubuntu had caused hospitals to start rendering MRI scan results differently due to differences in the OpenGL libraries. For those sorts of use cases, stable is the only option.

[smarx007]

I think this is a perfect use case for CentOS/RHEL as opposed to Ubuntu when the machine has only one job and nothing shall stand in its way, ie when you expect everything to be bug-for-bug compatible. But I fail to understand why a vendor of an MRI machine charging tens of thousands for installation/support cannot provide a supported RHEL OS which costs $180-350/yr in the cheapest config [1].

[1]: https://www.redhat.com/en/store/linux-platforms