Debian Bug report logs - #892914
reload hangs with systemd

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Vincent Bernat <bernat@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: reload hangs with systemd

Date: Wed, 14 Mar 2018 13:47:24 +0100

[Message part 1 (text/plain, inline)]

Source: unbound
Version: 1.6.7-1
Severity: normal
Tags: patch

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Hash: SHA256

Hey!

The systemd integration is a bit buggy with reload. On reload, unbound
will send STOPPING=1 then READY=1. After STOPPING=1 is sent, the
unbound-control process terminates. When receiving SIGCHLD, systemd
looks at the situation and transforms the "reload" state into a
"stop-sigterm" because of the STOPPING=1 notification previously sent:

Mar 14 13:07:54 infra-msg-pp002 systemd[1]: unbound.service: Child 13883 belongs to unbound.service
Mar 14 13:07:54 infra-msg-pp002 systemd[1]: unbound.service: Control process exited, code=exited status=0
Mar 14 13:07:54 infra-msg-pp002 systemd[1]: unbound.service: Got final SIGCHLD for state reload.
Mar 14 13:07:54 infra-msg-pp002 systemd[1]: unbound.service: Changed reload -> stop-sigterm

In this state, systemd waits for unbound to terminate. After a few
minutes, it will send SIGKILL to forcibly kill unbound. Attached is a
patch fixing this situation. I would be grateful if you could also
forward it upstream.

Thanks!

- -- System Information:
Debian Release: buster/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable'), (101, 'experimental-debug'), (101, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.15.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

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[fix-systemd-integration.patch (text/plain, attachment)]

Message #12 received at 892914-close@bugs.debian.org (full text, mbox, reply):

From: Robert Edmonds <edmonds@debian.org>

To: 892914-close@bugs.debian.org

Subject: Bug#892914: fixed in unbound 1.7.2-1

Date: Wed, 20 Jun 2018 22:06:24 +0000

Source: unbound
Source-Version: 1.7.2-1

We believe that the bug you reported is fixed in the latest version of
unbound, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 892914@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Robert Edmonds <edmonds@debian.org> (supplier of updated unbound package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)


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Hash: SHA256

Format: 1.8
Date: Wed, 20 Jun 2018 17:30:34 -0400
Source: unbound
Binary: libunbound-dev libunbound2 python-unbound python3-unbound unbound unbound-anchor unbound-host
Architecture: source
Version: 1.7.2-1
Distribution: unstable
Urgency: medium
Maintainer: unbound packagers <unbound@packages.debian.org>
Changed-By: Robert Edmonds <edmonds@debian.org>
Description:
 libunbound-dev - static library, header files, and docs for libunbound
 libunbound2 - library implementing DNS resolution and validation
 python-unbound - library implementing DNS resolution and validation (Python bindin
 python3-unbound - library implementing DNS resolution and validation (Python3 bindi
 unbound    - validating, recursive, caching DNS resolver
 unbound-anchor - utility to securely fetch the root DNS trust anchor
 unbound-host - reimplementation of the 'host' command
Closes: 892914 899758
Changes:
 unbound (1.7.2-1) unstable; urgency=medium
 .
   [ Robert Edmonds ]
   * New upstream version 1.7.2
   * debian/control: Update Maintainer field (Closes: #899758)
 .
   [ Vincent Bernat ]
   * daemon/daemon.c: Fix reload hangs with systemd (Closes: #892914)
Checksums-Sha1:
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 09030d0812458ebe84efae7c837f01d92b16adef 5570654 unbound_1.7.2.orig.tar.gz
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Checksums-Sha256:
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Files:
 bd7762e6cf4ca25ad81fcceafe2ff937 3026 net optional unbound_1.7.2-1.dsc
 1f4fd7e5032a9c5658cbde2c83f5f3be 5570654 net optional unbound_1.7.2.orig.tar.gz
 7abcbdd8c1f31806e2009519840fdb70 17868 net optional unbound_1.7.2-1.debian.tar.xz
 509348e1c53af376efa2f2d3243587b3 8542 net optional unbound_1.7.2-1_source.buildinfo

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