[CRIU] Can't handle non-regular mapping

[Zmudzinski, Krystof C]

I'm running a sample app that talks to a driver I loaded on the host.  I added lxc.cgroup.devices.allow line to the config file and executed mknod in the container.  The app works just fine.  But if I try to suspend my container while the app is running, I get this error from proc_parse.c: Can't handle non-regular mapping on PID's map BIG_NUMBER.

Once the application stop, I can suspend and then resume just fine.

I'd like to know what this error means and what should I do - even if that includes writing some code - to be able to suspend the container while the app is running.

Krystof

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