This bug was fixed in the package systemd - 249.10-0ubuntu2
---------------
systemd (249.10-0ubuntu2) jammy; urgency=medium
* Fix deadlock between pid1 and dbus-daemon (LP: #1871538)
File:
debian/patches/pid1-set-SYSTEMD_NSS_DYNAMIC_BYPASS-1-env-var-for-dbus-da.patch
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=100a7bfc2d0f82c3afbede04a022c655529cffac
* Don't override Ubuntu's default sysctl values (LP: #1962038)
File:
debian/patches/debian/UBUNTU-Don-t-override-Ubuntu-s-default-sysctl-values-LP-1962038.patch
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=b10cdb7da3539b3a3c3e619b470a75c83e46ef11
-- Lukas Märdian <sl...@ubuntu.com> Tue, 08 Mar 2022 14:58:00 +0100
** Changed in: systemd (Ubuntu Jammy)
Status: In Progress => 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:
New
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:
New
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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