[Bug 257314] FBSD 13 crash after some KDE parts crash supposing out of swap space

From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 23 Jul 2021 20:20:02 UTC

--- Comment #22 from Mark Millard <marklmi26-fbsd@yahoo.com> ---
(In reply to Michael from comment #20)

> certainly it is not really kernel related because the underlying OS is working still fine

No. The kills are initiated by the kernel --and only by
the kernel. The OS is doing the kills for failing the
conditions for allowing continued operation of all the

The kernel is also what reports: "swap_pager: indefinite wait
buffer:" messages.

I would like the patched kernel to be used in order to find
out exactly --and for sure-- which condition in the kernel
is failing to allow continued operation of all processes.

I've no objection to combining such with an increased
vm.pageout_oom_seq value assigned at boot:

A) If it still does a kill, we learn from the messages
   what the condition was.

B) If it no longer does a kill, we then know that the
   condition that had been failing was the test
   involving vm.pageout_oom_seq .

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