perf_event_open(0x0, 0x0, 0x0, 0xffffffffffffffff, 0x0)
r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/config', 0x0, 0x0)
openat$cgroup_freezer_state(r0, &(0x7f00000000c0), 0x2, 0x0)