Bug 1824019

Summary: SELinux is preventing qemu-system-x86 from read, write access on the chr_file /dev/mapper/control.
Product: [Fedora] Fedora Reporter: Mikhail <mikhail.v.gavrilov>
Component: selinux-policyAssignee: Zdenek Pytela <zpytela>
Status: CLOSED RAWHIDE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: dwalsh, grepl.miroslav, lvrabec, plautrba, vmojzis, zpytela
Target Milestone: ---Keywords: Triaged
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
Whiteboard: abrt_hash:f0e86162f61f850f9978b86fdf2e8c6813e742cfe8cb7fa188c0935bc148a465;VARIANT_ID=workstation;
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-07-07 07:46:10 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 Mikhail 2020-04-15 05:10:09 UTC
Description of problem:
Just launch virtual machine
SELinux is preventing qemu-system-x86 from read, write access on the chr_file /dev/mapper/control.

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

If you believe that qemu-system-x86 should be allowed read write access on the control chr_file 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 'qemu-system-x86' --raw | audit2allow -M my-qemusystemx86
# semodule -X 300 -i my-qemusystemx86.pp

Additional Information:
Source Context                system_u:system_r:svirt_t:s0:c246,c566
Target Context                system_u:object_r:lvm_control_t:s0
Target Objects                /dev/mapper/control [ chr_file ]
Source                        qemu-system-x86
Source Path                   qemu-system-x86
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
SELinux Policy RPM            selinux-policy-3.14.6-11.fc33.noarch
Local Policy RPM              selinux-policy-targeted-3.14.6-11.fc33.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Host Name                     (removed)
Platform                      Linux (removed) 5.7.0-0.rc1.git0.1.1.fc33.x86_64
                              #1 SMP Wed Apr 15 09:38:55 +05 2020 x86_64 x86_64
Alert Count                   1
First Seen                    2020-04-15 10:09:17 +05
Last Seen                     2020-04-15 10:09:17 +05
Local ID                      ebfd7c04-3eaf-4674-8975-1e11c52e3f2c

Raw Audit Messages
type=AVC msg=audit(1586927357.64:421): avc:  denied  { read write } for  pid=9077 comm="qemu-system-x86" path="/dev/mapper/control" dev="devtmpfs" ino=3183 scontext=system_u:system_r:svirt_t:s0:c246,c566 tcontext=system_u:object_r:lvm_control_t:s0 tclass=chr_file permissive=1


Hash: qemu-system-x86,svirt_t,lvm_control_t,chr_file,read,write

Version-Release number of selected component:
selinux-policy-3.14.6-11.fc33.noarch

Additional info:
component:      selinux-policy
reporter:       libreport-2.12.0
hashmarkername: setroubleshoot
kernel:         5.7.0-0.rc1.git0.1.1.fc33.x86_64
type:           libreport

Comment 2 Zdenek Pytela 2020-06-16 13:10:47 UTC
I've submitted a Fedora PR to address the issue:
https://github.com/fedora-selinux/selinux-policy-contrib/pull/269

Comment 3 Zdenek Pytela 2020-07-07 07:46:10 UTC
Merged to rawhide.