r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./cgroup/cgroup.procs\x00', 0x0, 0x0)
readv(r0, &(0x7f0000000240)=[{&(0x7f0000000000)=""/20, 0x14}], 0x1)
close(r0)