r0 = openat$tcp_congestion(0xffffffffffffff9c, &(0x7f0000000040), 0x1, 0x0)
writev(r0, &(0x7f00000015c0)=[{&(0x7f00000001c0)="474731236f4d9fe04ab7b35ff0b0172d", 0x10}], 0x1)