openat(0xffffffffffffff9c, &(0x7f0000000040)='./cgroup/cgroup.procs\x00', 0x0, 0x0) openat$sndseq(0xffffffffffffff9c, &(0x7f0000000040), 0x0) close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x2) pselect6(0x40, &(0x7f0000000240), &(0x7f0000000280)={0x1f}, 0x0, 0x0, 0x0)