r0 = socket$inet6_tcp(0xa, 0x1, 0x0) listen(r0, 0x0) r1 = syz_open_procfs(0x0, &(0x7f0000000040)='net/tcp\x00') pread64(r1, &(0x7f0000001100)=""/4095, 0x20001be3, 0x0)