r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./cgroup/cgroup.procs\x00', 0x2, 0x0)
read(r0, &(0x7f0000000080)=""/1, 0x1)
write$cgroup_pid(r0, &(0x7f00000000c0), 0x12)
read(r0, &(0x7f0000000100)=""/37, 0x25)