Bug 1592901

Summary: SELinux is preventing pmdalinux from 'unix_read' accesses on the shared memory Unknown.
Product: [Fedora] Fedora Reporter: Eugene Mah <eugenemah>
Component: pcpAssignee: Lukas Berk <lberk>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 28CC: brolley, dwalsh, fche, lberk, lvrabec, mgoodwin, mgrepl, nathans, plautrba, pmoore, scox
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
Whiteboard: abrt_hash:2ab0528b8b3c66506a7bda028ae56ee232690132e142e1f59fad437257a5e5d7;VARIANT_ID=workstation;
Fixed In Version: pcp-4.1.1-2.fc27 pcp-4.1.1-2.fc28 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2018-08-14 20:18:20 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Eugene Mah 2018-06-19 14:48:22 UTC
Description of problem:
Seeing these denials repeatedly. Not sure what is causing them. 

Have tried to create a local policy as suggested by SELinux troubleshooter, but they still keep occurring.
SELinux is preventing pmdalinux from 'unix_read' accesses on the shared memory Unknown.

*****  Plugin catchall (100. confidence) suggests   **************************

If you believe that pmdalinux should be allowed unix_read access on the Unknown shm by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# ausearch -c 'pmdalinux' --raw | audit2allow -M my-pmdalinux
# semodule -X 300 -i my-pmdalinux.pp

Additional Information:
Source Context                system_u:system_r:pcp_pmcd_t:s0
Target Context                system_u:system_r:init_t:s0
Target Objects                Unknown [ shm ]
Source                        pmdalinux
Source Path                   pmdalinux
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.14.1-32.fc28.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 4.16.16-300.fc28.x86_64 #1 SMP Sun
                              Jun 17 03:02:42 UTC 2018 x86_64 x86_64
Alert Count                   112
First Seen                    2018-06-19 10:39:24 EDT
Last Seen                     2018-06-19 10:43:24 EDT
Local ID                      097d82be-686f-4d72-a4ac-f1a4e620a7d1

Raw Audit Messages
type=AVC msg=audit(1529419404.114:751): avc:  denied  { unix_read } for  pid=1806 comm="pmdalinux" key=0  scontext=system_u:system_r:pcp_pmcd_t:s0 tcontext=system_u:system_r:init_t:s0 tclass=shm permissive=0


Hash: pmdalinux,pcp_pmcd_t,init_t,shm,unix_read

Version-Release number of selected component:
selinux-policy-3.14.1-32.fc28.noarch

Additional info:
component:      selinux-policy
reporter:       libreport-2.9.5
hashmarkername: setroubleshoot
kernel:         4.16.16-300.fc28.x86_64
type:           libreport

Comment 1 Lukas Vrabec 2018-07-03 13:03:55 UTC
Hi, 

Any idea whats going on here? 

THanks,
Lukas.

Comment 2 Lukas Berk 2018-07-05 19:15:43 UTC
Hi,

Thanks for the report, Lukas, pcp's a monitoring framework, and some of it's metrics relate to various shm values.

I've added the related rule to pcp's upstream policy package

commit f6225737f8b03f0656b4ab8cd24312592a2629f5
Author: Lukas Berk <lberk>
Date:   Thu Jul 5 15:06:49 2018 -0400

    selinux: rhbz1592901
    
    Add init_t shm rule for accessing via unix_read, related qa

Comment 3 Fedora Update System 2018-08-04 00:21:31 UTC
pcp-4.1.1-2.fc28 has been submitted as an update to Fedora 28. https://bodhi.fedoraproject.org/updates/FEDORA-2018-0baea70d93

Comment 4 Fedora Update System 2018-08-04 00:33:54 UTC
pcp-4.1.1-2.fc27 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2018-bedf3e464f

Comment 5 Fedora Update System 2018-08-04 20:31:52 UTC
pcp-4.1.1-2.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-2018-bedf3e464f

Comment 6 Fedora Update System 2018-08-04 22:36:50 UTC
pcp-4.1.1-2.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-2018-0baea70d93

Comment 7 Fedora Update System 2018-08-14 20:18:20 UTC
pcp-4.1.1-2.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.

Comment 8 Fedora Update System 2018-08-14 21:09:12 UTC
pcp-4.1.1-2.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report.