virtual: 0.986
architecture: 0.982
arm: 0.976
device: 0.835
vnc: 0.818
peripherals: 0.763
VMM: 0.754
debug: 0.633
ppc: 0.619
graphic: 0.550
PID: 0.525
boot: 0.523
semantic: 0.517
socket: 0.497
risc-v: 0.482
permissions: 0.479
register: 0.434
hypervisor: 0.393
TCG: 0.361
kernel: 0.328
network: 0.311
files: 0.299
KVM: 0.289
performance: 0.231
mistranslation: 0.228
user-level: 0.192
i386: 0.162
assembly: 0.051
x86: 0.005

In the ARM environment, using pci-ohci with specific OS (CentOS-8-aarch64-1905-dvd1.iso) to start a virtual machine, will cause the memory leak
Description of problem:

Steps to reproduce:
1.Using the pci-ohci as the USB controller to start the VM;

2.install the OS using the CentOS-8-aarch64-1905-dvd1.iso ;

3.The QEMU process is taking up more and more memory, which looks like Memory leak
Additional information:
![bugreport](/uploads/63af75a469be21e7ce734a22a3dcf33c/bugreport.PNG)