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Description of problem:
This BZ is to make everybody aware that applying fapolicyd erratum RHBA-2020:4969 (https://access.redhat.com/errata/RHBA-2020:4969) won't help upgrading RHEL 8.2 systems partially, e.g. when applying security patches only:
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
# rpm -q fapolicyd
fapolicyd-0.9.1-4.el8.x86_64
# yum -y update --security
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
The command will upgrade systemd and cryptsetup-libs to 8.3 level and provoke the system crash leading to system corruption and "systemd: Freezing execution" state after reboot.
We need to make sure that fapolicyd gets automatically updated to fapolicyd-1.0-3.el8_3.2 when applying security fixes.
Version-Release number of selected component (if applicable):
fapolicyd-0.9.1-4.el8.x86_64
How reproducible:
ALWAYS
Steps to Reproduce:
1. Verify fapolicyd-0.9.1-4.el8.x86_64 is installed and fapolicyd is active
2. Partially update the system
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
# yum -y update systemd cryptsetup-libs
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
or issue
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
# yum -y update --security
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
Actual results:
CRASH, then freeze upon reboot
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
[ !! ] Failed to execute /sbin/init
[!!!!!!] Failed to execute fallback shell, freezing.
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Expected results:
fapolicyd updated as well to avoid the crash
Additionally, the erratum doesn't install properly on 8.1 systems when upgrading from 8.1 to 8.3 is issued.
The fapolicyd service fails, which hopefully enables upgrading "safely":
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Job for fapolicyd.service failed because the control process exited with error code.
See "systemctl status fapolicyd.service" and "journalctl -xe" for details.
error: %pretrans(fapolicyd-1.0-3.el8_3.2.x86_64) scriptlet failed, exit status 1
[...]
Running scriptlet: fapolicyd-selinux-1.0-3.el8_3.2.noarch 231/556
error: fapolicyd-1.0-3.el8_3.2.x86_64: install skipped
error: fapolicyd-0.8.10-3.el8_1.3.x86_64: erase skipped
[...]
Failed:
fapolicyd-1.0-3.el8_3.2.x86_64 fapolicyd-0.8.10-3.el8_1.3.x86_64
Error: Transaction failed
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
This happens because the rule is not compatible with older 8.1:
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
fapolicyd[8340]: Field type (perm) is unknown in line 1
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To recover, the admin must update the package again (it remains at 8.1 level):
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# yum -y update fapolicyd
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Finally he must reset the "failed state":
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# systemctl reset-failed fapolicyd
# systemctl restart fapolicyd
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------