r0 = openat$tcp_congestion(0xffffffffffffff9c, &(0x7f0000000580), 0x1, 0x0)
pwritev2(r0, &(0x7f0000000280)=[{&(0x7f00000000c0)="86", 0x1}, {0x0, 0x2}], 0x2, 0x7fff, 0x0, 0x0)