Bug 1949315

Description of problem:

systemd-timesyncd fails to start on boot after upgrade to Fedora 34.

Apr 14 02:32:08 polaris systemd[1]: Starting systemd-timesyncd.service...
Apr 14 02:32:08 polaris systemd-timesyncd[1138]: Failed to connect to bus: Permission denied
Apr 14 02:32:08 polaris systemd-timesyncd[1138]: Could not connect to bus: Permission denied
Apr 14 02:32:08 polaris systemd[1]: systemd-timesyncd.service: Main process exited, code=exited, status=1/FAILURE
Apr 14 02:32:08 polaris systemd[1]: systemd-timesyncd.service: Failed with result 'exit-code'.
Apr 14 02:32:08 polaris systemd[1]: Failed to start systemd-timesyncd.service.
Apr 14 02:32:08 polaris audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-timesyncd comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=failed'
Apr 14 02:32:08 polaris systemd[1]: systemd-timesyncd.service: Scheduled restart job, restart counter is at 5.
Apr 14 02:32:08 polaris systemd[1]: Stopped systemd-timesyncd.service.
Apr 14 02:32:08 polaris audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-timesyncd comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Apr 14 02:32:08 polaris audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-timesyncd comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Apr 14 02:32:08 polaris systemd[1]: systemd-timesyncd.service: Start request repeated too quickly.
Apr 14 02:32:08 polaris systemd[1]: systemd-timesyncd.service: Failed with result 'exit-code'.
Apr 14 02:32:08 polaris systemd[1]: Failed to start systemd-timesyncd.service.


SELinux is preventing systemd-timesyn from watch access on the directory /.

*****  Plugin catchall (100. confidence) suggests   **************************

If you believe that systemd-timesyn should be allowed watch access on the  directory by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# ausearch -c 'systemd-timesyn' --raw | audit2allow -M my-systemdtimesyn
# semodule -X 300 -i my-systemdtimesyn.pp

Additional Information:
Source Context                system_u:system_r:systemd_timedated_t:s0
Target Context                system_u:object_r:root_t:s0
Target Objects                / [ dir ]
Source                        systemd-timesyn
Source Path                   systemd-timesyn
Port                          <Unknown>
Host                          polaris
Source RPM Packages           
Target RPM Packages           filesystem-3.14-5.fc34.x86_64
SELinux Policy RPM            selinux-policy-targeted-34.3-1.fc34.noarch
Local Policy RPM              selinux-policy-targeted-34.3-1.fc34.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     polaris
Platform                      Linux polaris 5.11.13-300.fc34.x86_64 #1 SMP Sun
                              Apr 11 15:07:42 UTC 2021 x86_64 x86_64
Alert Count                   4
First Seen                    2021-04-14 02:32:08 CEST
Last Seen                     2021-04-14 02:32:08 CEST
Local ID                      19553ffe-61f6-460a-abdd-229c165550aa

Raw Audit Messages
type=AVC msg=audit(1618360328.663:158): avc:  denied  { watch } for  pid=1138 comm="systemd-timesyn" path="/" dev="dm-0" ino=2 scontext=system_u:system_r:systemd_timedated_t:s0 tcontext=system_u:object_r:root_t:s0 tclass=dir permissive=0


Hash: systemd-timesyn,systemd_timedated_t,root_t,dir,watch


Version-Release number of selected component (if applicable):

selinux-policy-34.3-1.fc34.noarch

How reproducible:
Always on boot but seems to work without warnings if started manually after boot is finished.

Steps to Reproduce:
Boot Fedora 34.

Actual results:
systemd-timesyncd fails to start on boot.

Expected results:
Successful systemd-timesyncd start.