r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./cgroup/cgroup.procs\x00', 0x0, 0x0)
read(r0, &(0x7f0000019680)=""/102400, 0x19000)
r1 = openat$selinux_attr(0xffffffffffffff9c, &(0x7f0000000700)='/proc/thread-self/attr/current\x00', 0x2, 0x0)
dup2(r1, r0)