NetBSD Problem Report #60009

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Date: Mon, 16 Feb 2026 02:07:26 +0000 (UTC)
From: campbell+netbsd@mumble.net
Reply-To: campbell+netbsd@mumble.net
To: gnats-bugs@NetBSD.org
Subject: /etc/daily: overlong run protection
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X-From4GNATS: "campbell+netbsd@mumble.net via gnats" <gnats-admin@NetBSD.org>

>Number:         60009
>Category:       misc
>Synopsis:       /etc/daily: overlong run protection
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    misc-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Feb 16 02:10:00 +0000 2026
>Originator:     Taylor R Campbell
>Release:        current, 11, 10, 9, ...
>Organization:
The NetBSDaily Collision, Inc.
>Environment:
>Description:

	If /etc/daily takes longer than a day to run, the same cron job
	might start running again the next day.  If something is
	hanging, there may be indefinite growth of hung /etc/daily jobs
	without feedback.

	Same with /etc/weekly, /etc/monthly.

>How-To-Repeat:

	echo sleep $((86400*365)) >>/etc/daily.local

>Fix:

	Take a lock, say /var/run/daily.lock, with flock(1).  If it's
	already taken, report a hung daily job by mail instead of
	hanging any more.

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