Bug 1616331
| Summary: | SELinux prevents amanda from running normally | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Orion Poplawski <orion> |
| Component: | selinux-policy | Assignee: | Lukas Vrabec <lvrabec> |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | high | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 28 | CC: | dwalsh, joshua.bakerlepain, lvrabec, mgrepl, plautrba |
| Target Milestone: | --- | Keywords: | Reopened |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | selinux-policy-3.14.1-44.fc28 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2018-10-09 03:09:21 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: | |||
Near as I can tell, the dac_override denial is preventing the writing of /var/lib/amanda/gnutar-lists/fedsvn1.mry.nwra.com_var_backup_0.new. Running in permissive mode and disabling the dontaudit rules allows it to run and I don't see other avcs. selinux-policy-3.14.1-42.fc28 has been submitted as an update to Fedora 28. https://bodhi.fedoraproject.org/updates/FEDORA-2018-2d1b09d217 selinux-policy-3.14.1-42.fc28 has been pushed to the Fedora 28 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-2018-2d1b09d217 selinux-policy-3.14.1-42.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report. With selinux-policy-3.14.1-42.fc28.noarch I'm still seeing:
type=AVC msg=audit(1536640000.775:101053): avc: denied { dac_override } for pid=20705 comm="tar" capability=1 scontext=system_u:system_r:amanda_t:s0 tcontext=system_u:system_r:amanda_t:s0 tclass=capability permissive=0
which leads to:
fedsvn1.mry.nwra.com /var/backup lev 0 FAILED [/usr/bin/tar exited with status 2: see /var/log/amanda/client/Data/amgtar.20180910204839000.debug]
fedsvn1.mry.nwra.com /var/backup lev 0 FAILED [shm_ring cancelled]
Mon Sep 10 20:48:39.105799929 2018: pid 18533: thd-0x5599a5fd7e00: amgtar: Spawning "/usr/bin/tar /usr/bin/tar --create --verbose --block-number --file - --directory /var/backup --no-check-device --listed-incremental /var/lib/amanda/gnutar-lists/fedsvn1.mry.nwra.com_var_backup_0.new --sparse --ignore-failed-read --totals --exclude-from /var/log/amanda/amgtar._var_backup.20180910204839.exclude ." in pipeline
Mon Sep 10 20:48:39.106959947 2018: pid 18533: thd-0x5599a5fd7e00: amgtar: 0: strange(?): /usr/bin/tar: /var/lib/amanda/gnutar-lists/fedsvn1.mry.nwra.com_var_backup_0.new: Cannot open: Permission denied
selinux-policy-3.14.1-44.fc28 has been submitted as an update to Fedora 28. https://bodhi.fedoraproject.org/updates/FEDORA-2018-5e18426088 selinux-policy-3.14.1-44.fc28 has been pushed to the Fedora 28 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-2018-5e18426088 selinux-policy-3.14.1-44.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report. |
Description of problem: See the following AVCs: type=AVC msg=audit(1534302426.000:5130): avc: denied { dac_override } for pid=3723 comm="tar" capability=1 scontext=system_u:system_r:amanda_t:s0 tcontext=system_u:system_r:amanda_t:s0 tclass=capability permissive=0 type=AVC msg=audit(1534305107.260:5509): avc: denied { map } for pid=6067 comm="amandad" path="/dev/shm/amanda_shm_control-6067-0" dev="tmpfs" ino=219981 scontext=system_u:system_r:amanda_t:s0 tcontext=system_u:object_r:amanda_tmpfs_t:s0 tclass=file permissive=0 Not sure if the first is a problem. The second is. amandad failures are: Tue Aug 14 20:07:06.002183161 2018: pid 3720: thd-0x55a785abe800: amgtar: /usr/bin/tar: /var/lib/amanda/gnutar-lists/fedsvn1.mry.nwra.com_var_backup_0.new: Cannot open: Permission denied Tue Aug 14 20:07:06.004510207 2018: pid 3720: thd-0x55a785abe800: amgtar: Total bytes written: 397864960 (380MiB, 146GiB/s) Tue Aug 14 20:07:06.004587064 2018: pid 3720: thd-0x55a785abe800: amgtar: /usr/bin/tar: Exiting with failure status due to previous errors Not sure exactly what is up with the above. Permissions seem okay: # ls -ldZ /var/lib/amanda/gnutar-lists/ drwxr-xr-x. 2 amandabackup disk system_u:object_r:amanda_gnutarlists_t:s0 6 Aug 14 20:07 /var/lib/amanda/gnutar-lists// Perhaps the dac_override is related? Tue Aug 14 20:51:47.261379900 2018: pid 6067: thd-0x5620b544d600: amandad: shm_ring_create Tue Aug 14 20:51:47.261818181 2018: pid 6067: thd-0x5620b544d600: amandad: shm_ring shm_ring.mc failed '/amanda_shm_control-6067-0': Permission denied Version-Release number of selected component (if applicable): selinux-policy-3.14.1-37.fc28.noarch