This bug was fixed in the package procps - 2:3.3.17-6ubuntu2
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procps (2:3.3.17-6ubuntu2) jammy; urgency=medium
* Add basic autopkgtest to validate sysctl-defaults (LP: #1962038)
-- Lukas Märdian <sl...@ubuntu.com> Fri, 25 Feb 2022 12:57:56 +0100
** Changed in: procps (Ubuntu Jammy)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1962038
Title:
wrong sysrq value in /usr/lib/sysctl.d/50-default.conf
Status in procps package in Ubuntu:
Fix Released
Status in systemd package in Ubuntu:
Fix Released
Status in procps source package in Impish:
Won't Fix
Status in systemd source package in Impish:
New
Status in procps source package in Jammy:
Fix Released
Status in systemd source package in Jammy:
Fix Released
Bug description:
[Impact]
I've just learned that systemd is setting kernel.sysrq to 16 in
/usr/lib/sysctl.d/50-default.conf. This is inconsistent with
/etc/sysctl.d/10-magic-sysrq.conf which intentionally sets it to 176
by default. systemd should drop its setting to defer to the file that
we have been carrying in procps for a very long time.
Therefore, users can only sync their storage but not do any other
actions using the magic sysrq key.
[Test Plan]
$ sysctl kernel.sysrq
=> This should show "kernel.sysrq = 176" as set by
/etc/sysctl.d/10-magic-sysrq.conf
$ sysctl net.ipv4.conf.all.rp_filter
=> This should show "net.ipv4.conf.all.rp_filter=2" as set by
/etc/sysctl.d/10-network-security.conf
[Where problems could occur]
* This patch changes systemd's sysctl configuration in /lib/sysctl.d/*.conf
* If something is broken it could fail to apply any of systemd's sysctl
configuration, but Ubuntu's defaults from /etc/sysctl.d/*.conf would still be
in place.
[Other Info]
* None
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