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