device: 0.608
performance: 0.553
semantic: 0.474
graphic: 0.387
register: 0.349
mistranslation: 0.344
architecture: 0.286
arm: 0.272
vnc: 0.216
TCG: 0.183
ppc: 0.166
network: 0.135
virtual: 0.132
VMM: 0.130
debug: 0.128
assembly: 0.123
socket: 0.110
boot: 0.091
peripherals: 0.078
PID: 0.071
i386: 0.061
x86: 0.057
user-level: 0.047
permissions: 0.041
files: 0.039
risc-v: 0.034
kernel: 0.022
KVM: 0.021
hypervisor: 0.016

DEREF_OF_NULL.RET in qdev-clock.c