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Bug 1978507

Summary: systemd[1]: Failed to remove "/run/systemd/default-hostname": Permission denied
Product: Red Hat Enterprise Linux 9 Reporter: Frank Liang <xiliang>
Component: selinux-policyAssignee: Zdenek Pytela <zpytela>
Status: CLOSED CURRENTRELEASE QA Contact: Milos Malik <mmalik>
Severity: medium Docs Contact:
Priority: medium    
Version: 9.0CC: linl, lvrabec, megao, mmalik, mpitt, plautrba, ribarry, ssekidde, vkuznets, ymao, yuxisun
Target Milestone: betaKeywords: Reopened, Triaged
Target Release: 9.0 BetaFlags: pm-rhel: mirror+
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: selinux-policy-34.1.14-1.el9 Doc Type: No Doc Update
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-12-07 21:35:16 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Frank Liang 2021-07-02 02:50:27 UTC
Description of problem:
Fount below deny log in aws test RHEL-9.0.0-20210701.1(selinux-policy-34.1.9-1.el9.noarch) testing.

Jul 01 09:01:27 ip-10-22-1-103.us-west-2.compute.internal systemd[1]: Hostname set to <ip-10-22-1-103.us-west-2.compute.internal>.
Jul 01 09:01:27 ip-10-22-1-103.us-west-2.compute.internal systemd[1]: Failed to remove "/run/systemd/default-hostname": Permission denied
Jul 01 09:01:27 ip-10-22-1-103.us-west-2.compute.internal kernel: random: lvmconfig: uninitialized urandom read (4 bytes read)

Jul 01 08:58:46 ip-10-22-1-103.us-west-2.compute.internal audit: MAC_STATUS enforcing=1 old_enforcing=0 auid=4294967295 ses=4294967295 enabled=1 old-enabled=1 lsm=selinux res=1
Jul 01 08:58:46 ip-10-22-1-103.us-west-2.compute.internal audit: MAC_POLICY_LOAD auid=4294967295 ses=4294967295 lsm=selinux res=1
Jul 01 08:58:46 ip-10-22-1-103.us-west-2.compute.internal audit[1]: AVC avc:  denied  { unlink } for  pid=1 comm="systemd" name="default-hostname" dev="tmpfs" ino=12 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:hostname_etc_t:s0 tclass=file permissive=0

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

RHEL Version:
RHEL-9.0(5.13.0-0.rc7.51.el9.x86_64)

How reproducible:
100%

Steps to Reproduce:
1. start the latest RHEL-9 d3en.xlarge instance
2. check journal log
Actual results:
avd dennied log found

Expected results:
no such error

Additional info:
N/A

Comment 2 Martin Pitt 2021-08-07 05:32:14 UTC

*** This bug has been marked as a duplicate of bug 1966492 ***

Comment 3 Frank Liang 2021-08-09 03:20:28 UTC
bz1966492 was fixed and verified in selinux-policy-34.1.7-1.el9.
As my comments in bz1966492, this one is found in newer version and still exists in selinux-policy-34.1.10-1.el9.
So could you explain more about why they are the same? thanks

Comment 5 Martin Pitt 2021-08-09 05:08:18 UTC
Frank: Fair enough, sorry. Bug 1966492 has exactly the same file and operation in the title, but I see that in its comments it talks about a grab bag of related issues. I'll let the SELinux policy maintainers sort this out then.

Comment 7 Zdenek Pytela 2021-08-24 19:38:13 UTC
I've submitted a Fedora PR to address the issue:
https://github.com/fedora-selinux/selinux-policy/pull/848