Bug 2223788

Summary: mkfs was denied mounton access on /proc/1018/mounts when starting systemd-zram-setup@zram0.service during boot
Product: [Fedora] Fedora Reporter: Matt Fagnani <matt.fagnani>
Component: selinux-policyAssignee: Zdenek Pytela <zpytela>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: 38CC: dwalsh, lvrabec, mmalik, nknazeko, omosnacek, pkoncity, vmojzis, zpytela
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Target Release: ---   
Hardware: Unspecified   
OS: Linux   
Whiteboard:
Fixed In Version: selinux-policy-38.22-1.fc38 Doc Type: If docs needed, set a value
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Clone Of: Environment:
Last Closed: 2023-08-01 02:49:25 UTC Type: ---
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Matt Fagnani 2023-07-18 23:07:39 UTC
I booted Fedora-KDE-Live-x86_64-Rawhide-20230718.n.0.iso in a GNOME Boxes QEMU/KVM VM on a Fedora 38 KDE Plasma installation. mkfs was denied mounton access on /proc/1018/mounts when starting systemd-zram-setup during boot according to the journal.

Jul 18 18:32:13 systemd[1]: Found device dev-zram0.device - /dev/zram0.
Jul 18 18:32:14 systemd[1]: Starting systemd-zram-setup - Create swap on /dev/zram0...
Jul 18 18:32:14 kernel: zram0: detected capacity change from 0 to 5883904
Jul 18 18:32:14 kernel: audit: type=1400 audit(1689719534.077:9): avc:  denied  { mounton } for  pid=1018 comm="(mkfs)" path="/proc/1018/mounts" dev="proc" ino=21787 scontext=system_u:system_r:fsadm_t:s0 tcontext=system_u:system_r:fsadm_t:s0 tclass=file permissive=0
Jul 18 18:32:14 systemd-makefs[1011]: /dev/zram0 successfully formatted as swap (label "zram0", uuid a88fae4b-6e0f-4866-a680-2106f0555fe6)
Jul 18 18:32:14 systemd[1]: Finished systemd-zram-setup - Create swap on /dev/zram0.
Jul 18 18:32:14 systemd[1]: Activating swap dev-zram0.swap - Compressed Swap on /dev/zram0...
Jul 18 18:32:14 kernel: Adding 2941948k swap on /dev/zram0.  Priority:100 extents:1 across:2941948k SSDscFS
Jul 18 18:32:14 systemd[1]: Activated swap dev-zram0.swap - Compressed Swap on /dev/zram0.
Jul 18 18:32:14 systemd[1]: Reached target swap.target - Swaps.

The denial also happened when I ran sudo systemctl restart systemd-zram-setup in Konsole.


Reproducible: Always

Steps to Reproduce:
1. boot Fedora-KDE-Live-x86_64-Rawhide-20230718.n.0.iso https://koji.fedoraproject.org/koji/buildinfo?buildID=2234366 in a GNOME Boxes QEMU/KVM VM on a Fedora 38 KDE Plasma installation.
2.
3.
Actual Results:  
mkfs was denied mounton access on /proc/1018/mounts when starting systemd-zram-setup during boot

Expected Results:  
No denial should have happened.

systemd-254~rc2-4.fc39.x86_64 and kernel-6.5.0-0.rc2.17.fc39.x86_64 were in use. The denial might be related to some change in systemd 254

Comment 1 Fedora Update System 2023-07-25 17:23:38 UTC
FEDORA-2023-0b46b767d3 has been submitted as an update to Fedora 38. https://bodhi.fedoraproject.org/updates/FEDORA-2023-0b46b767d3

Comment 2 Fedora Update System 2023-07-26 02:09:56 UTC
FEDORA-2023-0b46b767d3 has been pushed to the Fedora 38 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2023-0b46b767d3`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2023-0b46b767d3

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 3 Fedora Update System 2023-08-01 02:49:25 UTC
FEDORA-2023-0b46b767d3 has been pushed to the Fedora 38 stable repository.
If problem still persists, please make note of it in this bug report.