Given the following code containing errors, provide Common Weakness Enumeration (CWE) identifiers and corresponding messages in JSON format. Each identified weakness should have a unique entry in the JSON array.
    Code: char *pointer(const char *fmt, char *buf, char *end, void *ptr,
	      struct printf_spec spec)
{
	const int default_width = 2 * sizeof(void *);

	if (!ptr && *fmt != 'K') {
		/*
		 * Print (null) with the same width as a pointer so it makes
		 * tabular output look nice.
		 */
		if (spec.field_width == -1)
			spec.field_width = default_width;
		return string(buf, end, "(null)", spec);
	}

	switch (*fmt) {
	case 'F':
	case 'f':
		ptr = dereference_function_descriptor(ptr);
		/* Fallthrough */
	case 'S':
	case 's':
	case 'B':
		return symbol_string(buf, end, ptr, spec, fmt);
	case 'R':
	case 'r':
		return resource_string(buf, end, ptr, spec, fmt);
	case 'h':
		return hex_string(buf, end, ptr, spec, fmt);
	case 'b':
		switch (fmt[1]) {
		case 'l':
			return bitmap_list_string(buf, end, ptr, spec, fmt);
		default:
			return bitmap_string(buf, end, ptr, spec, fmt);
		}
	case 'M':			/* Colon separated: 00:01:02:03:04:05 */
	case 'm':			/* Contiguous: 000102030405 */
					/* [mM]F (FDDI) */
					/* [mM]R (Reverse order; Bluetooth) */
		return mac_address_string(buf, end, ptr, spec, fmt);
	case 'I':			/* Formatted IP supported
					 * 4:	1.2.3.4
					 * 6:	0001:0203:...:0708
					 * 6c:	1::708 or 1::1.2.3.4
					 */
	case 'i':			/* Contiguous:
					 * 4:	001.002.003.004
					 * 6:   000102...0f
					 */
		switch (fmt[1]) {
		case '6':
			return ip6_addr_string(buf, end, ptr, spec, fmt);
		case '4':
			return ip4_addr_string(buf, end, ptr, spec, fmt);
		case 'S': {
			const union {
				struct sockaddr		raw;
				struct sockaddr_in	v4;
				struct sockaddr_in6	v6;
			} *sa = ptr;

			switch (sa->raw.sa_family) {
			case AF_INET:
				return ip4_addr_string_sa(buf, end, &sa->v4, spec, fmt);
			case AF_INET6:
				return ip6_addr_string_sa(buf, end, &sa->v6, spec, fmt);
			default:
				return string(buf, end, "(invalid address)", spec);
			}}
		}
		break;
	case 'E':
		return escaped_string(buf, end, ptr, spec, fmt);
	case 'U':
		return uuid_string(buf, end, ptr, spec, fmt);
	case 'V':
		{
			va_list va;

			va_copy(va, *((struct va_format *)ptr)->va);
			buf += vsnprintf(buf, end > buf ? end - buf : 0,
					 ((struct va_format *)ptr)->fmt, va);
			va_end(va);
			return buf;
		}
	case 'K':
		return restricted_pointer(buf, end, ptr, spec);
	case 'N':
		return netdev_bits(buf, end, ptr, fmt);
	case 'a':
		return address_val(buf, end, ptr, fmt);
	case 'd':
		return dentry_name(buf, end, ptr, spec, fmt);
	case 'C':
		return clock(buf, end, ptr, spec, fmt);
	case 'D':
		return dentry_name(buf, end,
				   ((const struct file *)ptr)->f_path.dentry,
				   spec, fmt);
#ifdef CONFIG_BLOCK
	case 'g':
		return bdev_name(buf, end, ptr, spec, fmt);
#endif

	case 'G':
		return flags_string(buf, end, ptr, fmt);
	case 'O':
		switch (fmt[1]) {
		case 'F':
			return device_node_string(buf, end, ptr, spec, fmt + 1);
		}
	}
	spec.flags |= SMALL;
	if (spec.field_width == -1) {
		spec.field_width = default_width;
		spec.flags |= ZEROPAD;
	}
	spec.base = 16;

	return number(buf, end, (unsigned long) ptr, spec);
} ; Sample JSON Format Confermily Expected output: "examples" => "cwe": "xxx"; "message": "xxx"
    
 'cwe': ['CWE-200'], 'message': 'printk: hash addresses printed with %p

Currently there exist approximately 14 000 places in the kernel where
addresses are being printed using an unadorned %p. This potentially
leaks sensitive information regarding the Kernel layout in memory. Many
of these calls are stale, instead of fixing every call lets hash the
address by default before printing. This will of course break some
users, forcing code printing needed addresses to be updated.

Code that _really_ needs the address will soon be able to use the new
printk specifier %px to print the address.

For what it's worth, usage of unadorned %p can be broken down as
follows (thanks to Joe Perches).

$ git grep -E '%p[^A-Za-z0-9]' | cut -f1 -d"/" | sort | uniq -c
   1084 arch
     20 block
     10 crypto
     32 Documentation
   8121 drivers
   1221 fs
    143 include
    101 kernel
     69 lib
    100 mm
   1510 net
     40 samples
      7 scripts
     11 security
    166 sound
    152 tools
      2 virt

Add function ptr_to_id() to map an address to a 32 bit unique
identifier. Hash any unadorned usage of specifier %p and any malformed
specifiers.

Signed-off-by: Tobin C. Harding <me@tobin.cc>'