Bug 1518864
| Summary: | dbus-broker fails due to mmap denial | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Tom Gundersen <tgunders> |
| Component: | selinux-policy | Assignee: | Lukas Vrabec <lvrabec> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | urgent | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 27 | CC: | daherrma, dwalsh, lvrabec, mgrepl, plautrba, pmoore, tgunders |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | selinux-policy-3.13.1-283.19.fc27 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2018-01-02 16:50:11 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: | |||
Are you able to reproduce it? Could you attach reproducer? Thanks, Lukas. Yes, just boot with dbus-broker and SELinux enabled on F27. `systemctl enable dbus-broker && systemctl --global enable dbus-broker`. We mmap an memfd that we use to write log-messages into. So due to the new SELinux mmap feature this fails any time we attempt to write to the log (taking down the daemon). selinux-policy-3.13.1-283.19.fc27 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2017-8225c4e502 selinux-policy-3.13.1-283.19.fc27 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2017-8225c4e502 selinux-policy-3.13.1-283.19.fc27 has been pushed to the Fedora 27 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-8225c4e502 selinux-policy-3.13.1-283.19.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report. |
As of F27, dbus-broker unconditionally fails on boot when SELinux is enabled with AVC avc: denied { map } for pid=985 comm="dbus-broker" path=2F6D656D66643A646275732D62726F6B65722D6C6F67202864656C6574656429 dev="tmpfs" ino=31832 scontext=system_u:system_r:system_dbusd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:tmpfs_t:s0 tclass=file permissive=0