kqueuex() system call was MFC'ed to releng/13 and releng/13.3?

From: Patrick M. Hausen <hausen_at_punkt.de>
Date: Thu, 07 Mar 2024 15:01:39 UTC
Hi all,

I just found that daemon(8) stopped working after I upgraded a jail running on a 13.1 host from 13.2 to 13.3.

	Host: 13.1 - jail: 13.2 - working
	Host: 13.1 - jail: 13.3 - daemon(8) fails to run

The cause seems to be the introduction of the kqueuex() system call in 13.3 which does not exist in 13.1 or 13.2.

Am I correct in this analysis? If yes, I fear there is no way around that?

Isn't -stable implying there won't be incompatible ABI changes?

This creates a huge problem for everyone running jails on TrueNAS CORE when the packages for releng/13
will switch from 13.2 to 13.3 ...

Of course this is not the FreeBSD projects fault but that did come as an unpleasant surprise, nonetheless.

Kind regards,
Patrick
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