Bug 1295680
| Summary: | [SELinux] Occasionally observing AVC's denied while running geo-rep automation | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Rahul Hinduja <rhinduja> | |
| Component: | selinux-policy | Assignee: | Lukas Vrabec <lvrabec> | |
| Status: | CLOSED ERRATA | QA Contact: | Milos Malik <mmalik> | |
| Severity: | medium | Docs Contact: | ||
| Priority: | high | |||
| Version: | 7.2 | CC: | ksrot, lvrabec, mgrepl, mjahoda, mmalik, plautrba, pprakash, pvrabec, rcyriac, rhinduja, snagar, ssekidde | |
| Target Milestone: | rc | Keywords: | ZStream | |
| Target Release: | --- | |||
| Hardware: | x86_64 | |||
| OS: | Linux | |||
| Whiteboard: | ||||
| Fixed In Version: | selinux-policy-3.13.1-71.el7 | Doc Type: | Bug Fix | |
| Doc Text: |
Previously, AVC denials messages were observed while running Red Hat Gluster Storage (RHGS) Geo-replication. The "dontaudit" rules for the Geo-replication has been added, and the AVC denials messages no longer appear.
|
Story Points: | --- | |
| Clone Of: | ||||
| : | 1372182 (view as bug list) | Environment: | ||
| Last Closed: | 2016-11-04 02:39:33 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: | ||||
| Bug Depends On: | ||||
| Bug Blocks: | 1372182 | |||
Does your scenario produce other AVCs in permissive mode? Tried the same scenario's couple of times in permissive mode. The only AVC observed are: [root@localhost scripts]# grep -i "avc" /var/log/audit/audit.log type=USER_AVC msg=audit(1452083477.867:38800): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='avc: received policyload notice (seqno=46) exe="/usr/lib/systemd/systemd" sauid=0 hostname=? addr=? terminal=?' type=USER_AVC msg=audit(1452148794.569:40973): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='avc: received policyload notice (seqno=47) exe="/usr/lib/systemd/systemd" sauid=0 hostname=? addr=? terminal=?' [root@localhost scripts]# [root@localhost scripts]# getenforce Permissive [root@localhost scripts]# As mentioned in the description, the avc related to getattr for comm="ps" and path="/dev/tty1" were only observed twice in multiple tries of automation run. I will keep checking for avc in my regression run and will update if happened to see them again. Did your tests work correctly? (In reply to Miroslav Grepl from comment #4) > Did your tests work correctly? Hi Miroslav, Since last month the same cases were run multiple times {4+} but only observed this issue with todays run as: [root@dhcp37-206 ~]# grep -i "avc" /var/log/audit/audit.log type=USER_AVC msg=audit(1455088627.000:95342): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='avc: received policyload notice (seqno=17) exe="/usr/lib/systemd/systemd" sauid=0 hostname=? addr=? terminal=?' type=AVC msg=audit(1455089581.718:95479): avc: denied { getattr } for pid=28794 comm="ps" path="/dev/tty1" dev="devtmpfs" ino=1043 scontext=system_u:system_r:logrotate_t:s0-s0:c0.c1023 tcontext=system_u:object_r:tty_device_t:s0 tclass=chr_file type=AVC msg=audit(1455089581.718:95480): avc: denied { getattr } for pid=28794 comm="ps" path="/dev/tty1" dev="devtmpfs" ino=1043 scontext=system_u:system_r:logrotate_t:s0-s0:c0.c1023 tcontext=system_u:object_r:tty_device_t:s0 tclass=chr_file type=AVC msg=audit(1455089581.718:95481): avc: denied { getattr } for pid=28794 comm="ps" path="/dev/tty1" dev="devtmpfs" ino=1043 scontext=system_u:system_r:logrotate_t:s0-s0:c0.c1023 tcontext=system_u:object_r:tty_device_t:s0 tclass=chr_file [root@dhcp37-206 ~]# [root@dhcp37-206 ~]# [root@dhcp37-206 ~]# rpm -qa | grep selinux-policy selinux-policy-3.13.1-60.el7_2.3.noarch selinux-policy-targeted-3.13.1-60.el7_2.3.noarch [root@dhcp37-206 ~]# [root@dhcp37-206 ~]# getenforce Enforcing [root@dhcp37-206 ~]# All my 34 tests are passed. Another AVC's observed for the 2nd time in multiple runs of automation. This avc is observed on 2 node from 6 node cluster.
[root@dhcp37-177 scripts]# grep -i "avc" /var/log/audit/audit.log
type=USER_AVC msg=audit(1455194761.044:841): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='avc: received policyload notice (seqno=2) exe="/usr/lib/systemd/systemd" sauid=0 hostname=? addr=? terminal=?'
type=AVC msg=audit(1455198364.732:1356): avc: denied { read } for pid=16732 comm="ldconfig" path="/var/lib/glusterd/geo-replication/master_10.70.37.52_slave" dev="dm-0" ino=149858 scontext=system_u:system_r:ldconfig_t:s0 tcontext=system_u:object_r:glusterd_var_lib_t:s0 tclass=dir
type=AVC msg=audit(1455198364.737:1357): avc: denied { read } for pid=16734 comm="ldconfig" path="/var/lib/glusterd/geo-replication/master_10.70.37.52_slave" dev="dm-0" ino=149858 scontext=system_u:system_r:ldconfig_t:s0 tcontext=system_u:object_r:glusterd_var_lib_t:s0 tclass=dir
Systems are cleaned as part of cleanup:
[root@dhcp37-177 glusterfs]# cat /var/log/audit/audit.log | audit2allow
#============= ldconfig_t ==============
allow ldconfig_t glusterd_var_lib_t:dir read;
[root@dhcp37-177 glusterfs]#
None of the automation cases failed and all files synced to slave. And all the files are accessible from client.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2016-2283.html |
Description of problem: ======================= Upon completion of geo-replication gluster storage run, observed following AVC's: type=AVC msg=audit(1451965501.485:873): avc: denied { getattr } for pid=28188 comm="ps" path="/dev/tty1" dev="devtmpfs" ino=1043 scontext=system_u:system_r:logrotate_t:s0-s0:c0.c1023 tcontext=system_u:object_r:tty_device_t:s0 tclass=chr_file type=AVC msg=audit(1451965501.485:874): avc: denied { getattr } for pid=28188 comm="ps" path="/dev/tty1" dev="devtmpfs" ino=1043 scontext=system_u:system_r:logrotate_t:s0-s0:c0.c1023 tcontext=system_u:object_r:tty_device_t:s0 tclass=chr_file type=AVC msg=audit(1451965501.485:875): avc: denied { getattr } for pid=28188 comm="ps" path="/dev/tty1" dev="devtmpfs" ino=1043 scontext=system_u:system_r:logrotate_t:s0-s0:c0.c1023 tcontext=system_u:object_r:tty_device_t:s0 tclass=chr_file Though the automation runs are passed and no functionality loss has been observed. [root@dhcp46-96 ~]# ls -Z /dev/tty1 crw--w----. root tty system_u:object_r:tty_device_t:s0 /dev/tty1 [root@dhcp46-96 ~]# Version-Release number of selected component (if applicable): ============================================================= [root@dhcp46-96 ~]# rpm -qa | grep selinux-policy selinux-policy-targeted-3.13.1-60.el7.noarch selinux-policy-3.13.1-60.el7.noarch [root@dhcp46-96 ~]# Gluster Version: ================ glusterfs-3.7.5-13.el7rhgs.x86_64 How reproducible: ================= Ran the same automation more than 5 times and observed this twice. Tried running the same scripts manually and didn't observe these AVC's.