[Bug 293382] Dead lock and kernel crash around closefp_impl

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 31 Mar 2026 23:51:34 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=293382

--- Comment #38 from Kyle Evans <kevans@freebsd.org> ---
(In reply to Paul from comment #37)

While we're waiting to see if kib' latest patch surfaces anything of interest,
can you clarify/characterize the app's kqueue usage a little bit?  Is it purely
adding events to the kqueue and letting them drop out organically from being
closed, mix of that and EV_DISABLE/EV_ONESHOT, etc?

Are all of the events in this kqueue tied to fds, or is it also driving timers
and other non-fd things?

I don't think all of the above is going to be particularly relevant, but I
think it's good to try and get the lay of the land in case we're not thinking
outside of the box enough somehow.

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