[lixtra]

This is not a docker bug, it is a kernel bug.

It could be triggered by other complex applications that use kernel container features.

[atoav]

Or it could not be triggered if you don't use containers.

[kuschku]

It could also be triggered by application sandboxing solutions that aren't containers.

[vbezhenar]

That's another reason to avoid those appimages and snaps.

[Fnoord]

Would it have occurred on Podman as well?

[markstos]

Some of my servers were running Ubuntu with systemd+podman to manage services, and none of them had a problem.

[remram]

You would have to be running this specific kernel version and one of your containers has to memory-map a file (not from a volume?), from what I understand.

[remram]

Depending on your configuration. You would need to be using overlayfs with Podman.

[jacquesm]

That pretty much makes the GPs point: emergent behavior arising from complexity.