[mirror_ubuntu-hirsute-kernel.git] / lib / test_printf.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Test cases for printf facility.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/printk.h>
#include <linux/random.h>
#include <linux/rtc.h>
#include <linux/slab.h>
#include <linux/string.h>

#include <linux/bitmap.h>
#include <linux/dcache.h>
#include <linux/socket.h>
#include <linux/in.h>

#include <linux/gfp.h>
#include <linux/mm.h>

#include <linux/property.h>

#include "../tools/testing/selftests/kselftest_module.h"

#define BUF_SIZE 256
#define PAD_SIZE 16
#define FILL_CHAR '$'

static unsigned total_tests __initdata;
static unsigned failed_tests __initdata;
static char *test_buffer __initdata;
static char *alloced_buffer __initdata;

static int __printf(4, 0) __init
do_test(int bufsize, const char *expect, int elen,
	const char *fmt, va_list ap)
{
	va_list aq;
	int ret, written;

	total_tests++;

	memset(alloced_buffer, FILL_CHAR, BUF_SIZE + 2*PAD_SIZE);
	va_copy(aq, ap);
	ret = vsnprintf(test_buffer, bufsize, fmt, aq);
	va_end(aq);

	if (ret != elen) {
		pr_warn("vsnprintf(buf, %d, \"%s\", ...) returned %d, expected %d\n",
			bufsize, fmt, ret, elen);
		return 1;
	}

	if (memchr_inv(alloced_buffer, FILL_CHAR, PAD_SIZE)) {
		pr_warn("vsnprintf(buf, %d, \"%s\", ...) wrote before buffer\n", bufsize, fmt);
		return 1;
	}

	if (!bufsize) {
		if (memchr_inv(test_buffer, FILL_CHAR, BUF_SIZE + PAD_SIZE)) {
			pr_warn("vsnprintf(buf, 0, \"%s\", ...) wrote to buffer\n",
				fmt);
			return 1;
		}
		return 0;
	}

	written = min(bufsize-1, elen);
	if (test_buffer[written]) {
		pr_warn("vsnprintf(buf, %d, \"%s\", ...) did not nul-terminate buffer\n",
			bufsize, fmt);
		return 1;
	}

	if (memchr_inv(test_buffer + written + 1, FILL_CHAR, BUF_SIZE + PAD_SIZE - (written + 1))) {
		pr_warn("vsnprintf(buf, %d, \"%s\", ...) wrote beyond the nul-terminator\n",
			bufsize, fmt);
		return 1;
	}

	if (memcmp(test_buffer, expect, written)) {
		pr_warn("vsnprintf(buf, %d, \"%s\", ...) wrote '%s', expected '%.*s'\n",
			bufsize, fmt, test_buffer, written, expect);
		return 1;
	}
	return 0;
}

static void __printf(3, 4) __init
__test(const char *expect, int elen, const char *fmt, ...)
{
	va_list ap;
	int rand;
	char *p;

	if (elen >= BUF_SIZE) {
		pr_err("error in test suite: expected output length %d too long. Format was '%s'.\n",
		       elen, fmt);
		failed_tests++;
		return;
	}

	va_start(ap, fmt);

	/*
	 * Every fmt+args is subjected to four tests: Three where we
	 * tell vsnprintf varying buffer sizes (plenty, not quite
	 * enough and 0), and then we also test that kvasprintf would
	 * be able to print it as expected.
	 */
	failed_tests += do_test(BUF_SIZE, expect, elen, fmt, ap);
	rand = 1 + prandom_u32_max(elen+1);
	/* Since elen < BUF_SIZE, we have 1 <= rand <= BUF_SIZE. */
	failed_tests += do_test(rand, expect, elen, fmt, ap);
	failed_tests += do_test(0, expect, elen, fmt, ap);

	p = kvasprintf(GFP_KERNEL, fmt, ap);
	if (p) {
		total_tests++;
		if (memcmp(p, expect, elen+1)) {
			pr_warn("kvasprintf(..., \"%s\", ...) returned '%s', expected '%s'\n",
				fmt, p, expect);
			failed_tests++;
		}
		kfree(p);
	}
	va_end(ap);
}

#define test(expect, fmt, ...)					\
	__test(expect, strlen(expect), fmt, ##__VA_ARGS__)

static void __init
test_basic(void)
{
	/* Work around annoying "warning: zero-length gnu_printf format string". */
	char nul = '\0';

	test("", &nul);
	test("100%", "100%%");
	test("xxx%yyy", "xxx%cyyy", '%');
	__test("xxx\0yyy", 7, "xxx%cyyy", '\0');
}

static void __init
test_number(void)
{
	test("0x1234abcd  ", "%#-12x", 0x1234abcd);
	test("  0x1234abcd", "%#12x", 0x1234abcd);
	test("0|001| 12|+123| 1234|-123|-1234", "%d|%03d|%3d|%+d|% d|%+d|% d", 0, 1, 12, 123, 1234, -123, -1234);
	test("0|1|1|128|255", "%hhu|%hhu|%hhu|%hhu|%hhu", 0, 1, 257, 128, -1);
	test("0|1|1|-128|-1", "%hhd|%hhd|%hhd|%hhd|%hhd", 0, 1, 257, 128, -1);
	test("2015122420151225", "%ho%ho%#ho", 1037, 5282, -11627);
	/*
	 * POSIX/C99: »The result of converting zero with an explicit
	 * precision of zero shall be no characters.« Hence the output
	 * from the below test should really be "00|0||| ". However,
	 * the kernel's printf also produces a single 0 in that
	 * case. This test case simply documents the current
	 * behaviour.
	 */
	test("00|0|0|0|0", "%.2d|%.1d|%.0d|%.*d|%1.0d", 0, 0, 0, 0, 0, 0);
#ifndef __CHAR_UNSIGNED__
	{
		/*
		 * Passing a 'char' to a %02x specifier doesn't do
		 * what was presumably the intention when char is
		 * signed and the value is negative. One must either &
		 * with 0xff or cast to u8.
		 */
		char val = -16;
		test("0xfffffff0|0xf0|0xf0", "%#02x|%#02x|%#02x", val, val & 0xff, (u8)val);
	}
#endif
}

static void __init
test_string(void)
{
	test("", "%s%.0s", "", "123");
	test("ABCD|abc|123", "%s|%.3s|%.*s", "ABCD", "abcdef", 3, "123456");
	test("1  |  2|3  |  4|5  ", "%-3s|%3s|%-*s|%*s|%*s", "1", "2", 3, "3", 3, "4", -3, "5");
	test("1234      ", "%-10.4s", "123456");
	test("      1234", "%10.4s", "123456");
	/*
	 * POSIX and C99 say that a negative precision (which is only
	 * possible to pass via a * argument) should be treated as if
	 * the precision wasn't present, and that if the precision is
	 * omitted (as in %.s), the precision should be taken to be
	 * 0. However, the kernel's printf behave exactly opposite,
	 * treating a negative precision as 0 and treating an omitted
	 * precision specifier as if no precision was given.
	 *
	 * These test cases document the current behaviour; should
	 * anyone ever feel the need to follow the standards more
	 * closely, this can be revisited.
	 */
	test("    ", "%4.*s", -5, "123456");
	test("123456", "%.s", "123456");
	test("a||", "%.s|%.0s|%.*s", "a", "b", 0, "c");
	test("a  |   |   ", "%-3.s|%-3.0s|%-3.*s", "a", "b", 0, "c");
}

#define PLAIN_BUF_SIZE 64	/* leave some space so we don't oops */

#if BITS_PER_LONG == 64

#define PTR_WIDTH 16
#define PTR ((void *)0xffff0123456789abUL)
#define PTR_STR "ffff0123456789ab"
#define PTR_VAL_NO_CRNG "(____ptrval____)"
#define ZEROS "00000000"	/* hex 32 zero bits */

static int __init
plain_format(void)
{
	char buf[PLAIN_BUF_SIZE];
	int nchars;

	nchars = snprintf(buf, PLAIN_BUF_SIZE, "%p", PTR);

	if (nchars != PTR_WIDTH)
		return -1;

	if (strncmp(buf, PTR_VAL_NO_CRNG, PTR_WIDTH) == 0) {
		pr_warn("crng possibly not yet initialized. plain 'p' buffer contains \"%s\"",
			PTR_VAL_NO_CRNG);
		return 0;
	}

	if (strncmp(buf, ZEROS, strlen(ZEROS)) != 0)
		return -1;

	return 0;
}

#else

#define PTR_WIDTH 8
#define PTR ((void *)0x456789ab)
#define PTR_STR "456789ab"
#define PTR_VAL_NO_CRNG "(ptrval)"
#define ZEROS ""

static int __init
plain_format(void)
{
	/* Format is implicitly tested for 32 bit machines by plain_hash() */
	return 0;
}

#endif	/* BITS_PER_LONG == 64 */

static int __init
plain_hash_to_buffer(const void *p, char *buf, size_t len)
{
	int nchars;

	nchars = snprintf(buf, len, "%p", p);

	if (nchars != PTR_WIDTH)
		return -1;

	if (strncmp(buf, PTR_VAL_NO_CRNG, PTR_WIDTH) == 0) {
		pr_warn("crng possibly not yet initialized. plain 'p' buffer contains \"%s\"",
			PTR_VAL_NO_CRNG);
		return 0;
	}

	return 0;
}

static int __init
plain_hash(void)
{
	char buf[PLAIN_BUF_SIZE];
	int ret;

	ret = plain_hash_to_buffer(PTR, buf, PLAIN_BUF_SIZE);
	if (ret)
		return ret;

	if (strncmp(buf, PTR_STR, PTR_WIDTH) == 0)
		return -1;

	return 0;
}

/*
 * We can't use test() to test %p because we don't know what output to expect
 * after an address is hashed.
 */
static void __init
plain(void)
{
	int err;

	err = plain_hash();
	if (err) {
		pr_warn("plain 'p' does not appear to be hashed\n");
		failed_tests++;
		return;
	}

	err = plain_format();
	if (err) {
		pr_warn("hashing plain 'p' has unexpected format\n");
		failed_tests++;
	}
}

static void __init
test_hashed(const char *fmt, const void *p)
{
	char buf[PLAIN_BUF_SIZE];
	int ret;

	/*
	 * No need to increase failed test counter since this is assumed
	 * to be called after plain().
	 */
	ret = plain_hash_to_buffer(p, buf, PLAIN_BUF_SIZE);
	if (ret)
		return;

	test(buf, fmt, p);
}

static void __init
null_pointer(void)
{
	test_hashed("%p", NULL);
	test(ZEROS "00000000", "%px", NULL);
	test("(null)", "%pE", NULL);
}

#define PTR_INVALID ((void *)0x000000ab)

static void __init
invalid_pointer(void)
{
	test_hashed("%p", PTR_INVALID);
	test(ZEROS "000000ab", "%px", PTR_INVALID);
	test("(efault)", "%pE", PTR_INVALID);
}

static void __init
symbol_ptr(void)
{
}

static void __init
kernel_ptr(void)
{
	/* We can't test this without access to kptr_restrict. */
}

static void __init
struct_resource(void)
{
}

static void __init
addr(void)
{
}

static void __init
escaped_str(void)
{
}

static void __init
hex_string(void)
{
	const char buf[3] = {0xc0, 0xff, 0xee};

	test("c0 ff ee|c0:ff:ee|c0-ff-ee|c0ffee",
	     "%3ph|%3phC|%3phD|%3phN", buf, buf, buf, buf);
	test("c0 ff ee|c0:ff:ee|c0-ff-ee|c0ffee",
	     "%*ph|%*phC|%*phD|%*phN", 3, buf, 3, buf, 3, buf, 3, buf);
}

static void __init
mac(void)
{
	const u8 addr[6] = {0x2d, 0x48, 0xd6, 0xfc, 0x7a, 0x05};

	test("2d:48:d6:fc:7a:05", "%pM", addr);
	test("05:7a:fc:d6:48:2d", "%pMR", addr);
	test("2d-48-d6-fc-7a-05", "%pMF", addr);
	test("2d48d6fc7a05", "%pm", addr);
	test("057afcd6482d", "%pmR", addr);
}

static void __init
ip4(void)
{
	struct sockaddr_in sa;

	sa.sin_family = AF_INET;
	sa.sin_port = cpu_to_be16(12345);
	sa.sin_addr.s_addr = cpu_to_be32(0x7f000001);

	test("127.000.000.001|127.0.0.1", "%pi4|%pI4", &sa.sin_addr, &sa.sin_addr);
	test("127.000.000.001|127.0.0.1", "%piS|%pIS", &sa, &sa);
	sa.sin_addr.s_addr = cpu_to_be32(0x01020304);
	test("001.002.003.004:12345|1.2.3.4:12345", "%piSp|%pISp", &sa, &sa);
}

static void __init
ip6(void)
{
}

static void __init
ip(void)
{
	ip4();
	ip6();
}

static void __init
uuid(void)
{
	const char uuid[16] = {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
			       0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf};

	test("00010203-0405-0607-0809-0a0b0c0d0e0f", "%pUb", uuid);
	test("00010203-0405-0607-0809-0A0B0C0D0E0F", "%pUB", uuid);
	test("03020100-0504-0706-0809-0a0b0c0d0e0f", "%pUl", uuid);
	test("03020100-0504-0706-0809-0A0B0C0D0E0F", "%pUL", uuid);
}

static struct dentry test_dentry[4] __initdata = {
	{ .d_parent = &test_dentry[0],
	  .d_name = QSTR_INIT(test_dentry[0].d_iname, 3),
	  .d_iname = "foo" },
	{ .d_parent = &test_dentry[0],
	  .d_name = QSTR_INIT(test_dentry[1].d_iname, 5),
	  .d_iname = "bravo" },
	{ .d_parent = &test_dentry[1],
	  .d_name = QSTR_INIT(test_dentry[2].d_iname, 4),
	  .d_iname = "alfa" },
	{ .d_parent = &test_dentry[2],
	  .d_name = QSTR_INIT(test_dentry[3].d_iname, 5),
	  .d_iname = "romeo" },
};

static void __init
dentry(void)
{
	test("foo", "%pd", &test_dentry[0]);
	test("foo", "%pd2", &test_dentry[0]);

	test("(null)", "%pd", NULL);
	test("(efault)", "%pd", PTR_INVALID);
	test("(null)", "%pD", NULL);
	test("(efault)", "%pD", PTR_INVALID);

	test("romeo", "%pd", &test_dentry[3]);
	test("alfa/romeo", "%pd2", &test_dentry[3]);
	test("bravo/alfa/romeo", "%pd3", &test_dentry[3]);
	test("/bravo/alfa/romeo", "%pd4", &test_dentry[3]);
	test("/bravo/alfa", "%pd4", &test_dentry[2]);

	test("bravo/alfa  |bravo/alfa  ", "%-12pd2|%*pd2", &test_dentry[2], -12, &test_dentry[2]);
	test("  bravo/alfa|  bravo/alfa", "%12pd2|%*pd2", &test_dentry[2], 12, &test_dentry[2]);
}

static void __init
struct_va_format(void)
{
}

static void __init
struct_rtc_time(void)
{
	/* 1543210543 */
	const struct rtc_time tm = {
		.tm_sec = 43,
		.tm_min = 35,
		.tm_hour = 5,
		.tm_mday = 26,
		.tm_mon = 10,
		.tm_year = 118,
	};

	test("(%ptR?)", "%pt", &tm);
	test("2018-11-26T05:35:43", "%ptR", &tm);
	test("0118-10-26T05:35:43", "%ptRr", &tm);
	test("05:35:43|2018-11-26", "%ptRt|%ptRd", &tm, &tm);
	test("05:35:43|0118-10-26", "%ptRtr|%ptRdr", &tm, &tm);
	test("05:35:43|2018-11-26", "%ptRttr|%ptRdtr", &tm, &tm);
	test("05:35:43 tr|2018-11-26 tr", "%ptRt tr|%ptRd tr", &tm, &tm);
}

static void __init
struct_clk(void)
{
}

static void __init
large_bitmap(void)
{
	const int nbits = 1 << 16;
	unsigned long *bits = bitmap_zalloc(nbits, GFP_KERNEL);
	if (!bits)
		return;

	bitmap_set(bits, 1, 20);
	bitmap_set(bits, 60000, 15);
	test("1-20,60000-60014", "%*pbl", nbits, bits);
	bitmap_free(bits);
}

static void __init
bitmap(void)
{
	DECLARE_BITMAP(bits, 20);
	const int primes[] = {2,3,5,7,11,13,17,19};
	int i;

	bitmap_zero(bits, 20);
	test("00000|00000", "%20pb|%*pb", bits, 20, bits);
	test("|", "%20pbl|%*pbl", bits, 20, bits);

	for (i = 0; i < ARRAY_SIZE(primes); ++i)
		set_bit(primes[i], bits);
	test("a28ac|a28ac", "%20pb|%*pb", bits, 20, bits);
	test("2-3,5,7,11,13,17,19|2-3,5,7,11,13,17,19", "%20pbl|%*pbl", bits, 20, bits);

	bitmap_fill(bits, 20);
	test("fffff|fffff", "%20pb|%*pb", bits, 20, bits);
	test("0-19|0-19", "%20pbl|%*pbl", bits, 20, bits);

	large_bitmap();
}

static void __init
netdev_features(void)
{
}

static void __init
flags(void)
{
	unsigned long flags;
	gfp_t gfp;
	char *cmp_buffer;

	flags = 0;
	test("", "%pGp", &flags);

	/* Page flags should filter the zone id */
	flags = 1UL << NR_PAGEFLAGS;
	test("", "%pGp", &flags);

	flags |= 1UL << PG_uptodate | 1UL << PG_dirty | 1UL << PG_lru
		| 1UL << PG_active | 1UL << PG_swapbacked;
	test("uptodate|dirty|lru|active|swapbacked", "%pGp", &flags);


	flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC
			| VM_DENYWRITE;
	test("read|exec|mayread|maywrite|mayexec|denywrite", "%pGv", &flags);

	gfp = GFP_TRANSHUGE;
	test("GFP_TRANSHUGE", "%pGg", &gfp);

	gfp = GFP_ATOMIC|__GFP_DMA;
	test("GFP_ATOMIC|GFP_DMA", "%pGg", &gfp);

	gfp = __GFP_ATOMIC;
	test("__GFP_ATOMIC", "%pGg", &gfp);

	cmp_buffer = kmalloc(BUF_SIZE, GFP_KERNEL);
	if (!cmp_buffer)
		return;

	/* Any flags not translated by the table should remain numeric */
	gfp = ~__GFP_BITS_MASK;
	snprintf(cmp_buffer, BUF_SIZE, "%#lx", (unsigned long) gfp);
	test(cmp_buffer, "%pGg", &gfp);

	snprintf(cmp_buffer, BUF_SIZE, "__GFP_ATOMIC|%#lx",
							(unsigned long) gfp);
	gfp |= __GFP_ATOMIC;
	test(cmp_buffer, "%pGg", &gfp);

	kfree(cmp_buffer);
}

static void __init fwnode_pointer(void)
{
	const struct software_node softnodes[] = {
		{ .name = "first", },
		{ .name = "second", .parent = &softnodes[0], },
		{ .name = "third", .parent = &softnodes[1], },
		{ NULL /* Guardian */ }
	};
	const char * const full_name = "first/second/third";
	const char * const full_name_second = "first/second";
	const char * const second_name = "second";
	const char * const third_name = "third";
	int rval;

	rval = software_node_register_nodes(softnodes);
	if (rval) {
		pr_warn("cannot register softnodes; rval %d\n", rval);
		return;
	}

	test(full_name_second, "%pfw", software_node_fwnode(&softnodes[1]));
	test(full_name, "%pfw", software_node_fwnode(&softnodes[2]));
	test(full_name, "%pfwf", software_node_fwnode(&softnodes[2]));
	test(second_name, "%pfwP", software_node_fwnode(&softnodes[1]));
	test(third_name, "%pfwP", software_node_fwnode(&softnodes[2]));

	software_node_unregister_nodes(softnodes);
}

static void __init
errptr(void)
{
	test("-1234", "%pe", ERR_PTR(-1234));

	/* Check that %pe with a non-ERR_PTR gets treated as ordinary %p. */
	BUILD_BUG_ON(IS_ERR(PTR));
	test_hashed("%pe", PTR);

#ifdef CONFIG_SYMBOLIC_ERRNAME
	test("(-ENOTSOCK)", "(%pe)", ERR_PTR(-ENOTSOCK));
	test("(-EAGAIN)", "(%pe)", ERR_PTR(-EAGAIN));
	BUILD_BUG_ON(EAGAIN != EWOULDBLOCK);
	test("(-EAGAIN)", "(%pe)", ERR_PTR(-EWOULDBLOCK));
	test("[-EIO    ]", "[%-8pe]", ERR_PTR(-EIO));
	test("[    -EIO]", "[%8pe]", ERR_PTR(-EIO));
	test("-EPROBE_DEFER", "%pe", ERR_PTR(-EPROBE_DEFER));
#endif
}

static void __init
test_pointer(void)
{
	plain();
	null_pointer();
	invalid_pointer();
	symbol_ptr();
	kernel_ptr();
	struct_resource();
	addr();
	escaped_str();
	hex_string();
	mac();
	ip();
	uuid();
	dentry();
	struct_va_format();
	struct_rtc_time();
	struct_clk();
	bitmap();
	netdev_features();
	flags();
	errptr();
	fwnode_pointer();
}

static void __init selftest(void)
{
	alloced_buffer = kmalloc(BUF_SIZE + 2*PAD_SIZE, GFP_KERNEL);
	if (!alloced_buffer)
		return;
	test_buffer = alloced_buffer + PAD_SIZE;

	test_basic();
	test_number();
	test_string();
	test_pointer();

	kfree(alloced_buffer);
}

KSTM_MODULE_LOADERS(test_printf);
MODULE_AUTHOR("Rasmus Villemoes <linux@rasmusvillemoes.dk>");
MODULE_LICENSE("GPL");
Commit	Line	Data
09c434b8	1	// SPDX-License-Identifier: GPL-2.0-only
707cc728 RV	2	/*
	3	* Test cases for printf facility.
	4	*/
	5
	6	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
	7
	8	#include <linux/init.h>
	9	#include <linux/kernel.h>
	10	#include <linux/module.h>
	11	#include <linux/printk.h>
	12	#include <linux/random.h>
4d42c447	13	#include <linux/rtc.h>
707cc728 RV	14	#include <linux/slab.h>
	15	#include <linux/string.h>
	16
857cca4d	17	#include <linux/bitmap.h>
251c7234	18	#include <linux/dcache.h>
707cc728 RV	19	#include <linux/socket.h>
	20	#include <linux/in.h>
	21
edf14cdb VB	22	#include <linux/gfp.h>
	23	#include <linux/mm.h>
	24
f1ce39df SA	25	#include <linux/property.h>
f1ce39df SA	26
6b1a4d5b TH	27	#include "../tools/testing/selftests/kselftest_module.h"
6b1a4d5b TH	28
707cc728	29	#define BUF_SIZE 256
331e4deb	30	#define PAD_SIZE 16
707cc728 RV	31	#define FILL_CHAR '$'
707cc728 RV	32
707cc728 RV	33	static unsigned total_tests __initdata;
	34	static unsigned failed_tests __initdata;
	35	static char *test_buffer __initdata;
331e4deb	36	static char *alloced_buffer __initdata;
707cc728 RV	37
	38	static int __printf(4, 0) __init
	39	do_test(int bufsize, const char *expect, int elen,
	40	const char *fmt, va_list ap)
	41	{
	42	va_list aq;
	43	int ret, written;
	44
	45	total_tests++;
	46
331e4deb	47	memset(alloced_buffer, FILL_CHAR, BUF_SIZE + 2*PAD_SIZE);
707cc728 RV	48	va_copy(aq, ap);
	49	ret = vsnprintf(test_buffer, bufsize, fmt, aq);
	50	va_end(aq);
	51
	52	if (ret != elen) {
	53	pr_warn("vsnprintf(buf, %d, \"%s\", ...) returned %d, expected %d\n",
	54	bufsize, fmt, ret, elen);
	55	return 1;
	56	}
	57
331e4deb RV	58	if (memchr_inv(alloced_buffer, FILL_CHAR, PAD_SIZE)) {
	59	pr_warn("vsnprintf(buf, %d, \"%s\", ...) wrote before buffer\n", bufsize, fmt);
	60	return 1;
	61	}
	62
707cc728	63	if (!bufsize) {
331e4deb	64	if (memchr_inv(test_buffer, FILL_CHAR, BUF_SIZE + PAD_SIZE)) {
707cc728 RV	65	pr_warn("vsnprintf(buf, 0, \"%s\", ...) wrote to buffer\n",
	66	fmt);
	67	return 1;
	68	}
	69	return 0;
	70	}
	71
	72	written = min(bufsize-1, elen);
	73	if (test_buffer[written]) {
	74	pr_warn("vsnprintf(buf, %d, \"%s\", ...) did not nul-terminate buffer\n",
	75	bufsize, fmt);
	76	return 1;
	77	}
	78
331e4deb RV	79	if (memchr_inv(test_buffer + written + 1, FILL_CHAR, BUF_SIZE + PAD_SIZE - (written + 1))) {
	80	pr_warn("vsnprintf(buf, %d, \"%s\", ...) wrote beyond the nul-terminator\n",
	81	bufsize, fmt);
	82	return 1;
	83	}
	84
707cc728 RV	85	if (memcmp(test_buffer, expect, written)) {
	86	pr_warn("vsnprintf(buf, %d, \"%s\", ...) wrote '%s', expected '%.*s'\n",
	87	bufsize, fmt, test_buffer, written, expect);
	88	return 1;
	89	}
	90	return 0;
	91	}
	92
	93	static void __printf(3, 4) __init
	94	__test(const char expect, int elen, const char fmt, ...)
	95	{
	96	va_list ap;
	97	int rand;
	98	char *p;
	99
fd0515d5 RV	100	if (elen >= BUF_SIZE) {
	101	pr_err("error in test suite: expected output length %d too long. Format was '%s'.\n",
	102	elen, fmt);
	103	failed_tests++;
	104	return;
	105	}
707cc728 RV	106
	107	va_start(ap, fmt);
	108
	109	/*
	110	* Every fmt+args is subjected to four tests: Three where we
	111	* tell vsnprintf varying buffer sizes (plenty, not quite
	112	* enough and 0), and then we also test that kvasprintf would
	113	* be able to print it as expected.
	114	*/
	115	failed_tests += do_test(BUF_SIZE, expect, elen, fmt, ap);
	116	rand = 1 + prandom_u32_max(elen+1);
	117	/* Since elen < BUF_SIZE, we have 1 <= rand <= BUF_SIZE. */
	118	failed_tests += do_test(rand, expect, elen, fmt, ap);
	119	failed_tests += do_test(0, expect, elen, fmt, ap);
	120
	121	p = kvasprintf(GFP_KERNEL, fmt, ap);
	122	if (p) {
b79a7db3	123	total_tests++;
707cc728 RV	124	if (memcmp(p, expect, elen+1)) {
	125	pr_warn("kvasprintf(..., \"%s\", ...) returned '%s', expected '%s'\n",
	126	fmt, p, expect);
	127	failed_tests++;
	128	}
	129	kfree(p);
	130	}
	131	va_end(ap);
	132	}
	133
	134	#define test(expect, fmt, ...) \
	135	__test(expect, strlen(expect), fmt, ##__VA_ARGS__)
	136
	137	static void __init
	138	test_basic(void)
	139	{
	140	/* Work around annoying "warning: zero-length gnu_printf format string". */
	141	char nul = '\0';
	142
	143	test("", &nul);
	144	test("100%", "100%%");
	145	test("xxx%yyy", "xxx%cyyy", '%');
	146	__test("xxx\0yyy", 7, "xxx%cyyy", '\0');
	147	}
	148
	149	static void __init
	150	test_number(void)
	151	{
	152	test("0x1234abcd ", "%#-12x", 0x1234abcd);
	153	test(" 0x1234abcd", "%#12x", 0x1234abcd);
	154	test("0\|001\| 12\|+123\| 1234\|-123\|-1234", "%d\|%03d\|%3d\|%+d\|% d\|%+d\|% d", 0, 1, 12, 123, 1234, -123, -1234);
1ca8e8eb RV	155	test("0\|1\|1\|128\|255", "%hhu\|%hhu\|%hhu\|%hhu\|%hhu", 0, 1, 257, 128, -1);
	156	test("0\|1\|1\|-128\|-1", "%hhd\|%hhd\|%hhd\|%hhd\|%hhd", 0, 1, 257, 128, -1);
	157	test("2015122420151225", "%ho%ho%#ho", 1037, 5282, -11627);
	158	/*
	159	* POSIX/C99: »The result of converting zero with an explicit
	160	* precision of zero shall be no characters.« Hence the output
	161	* from the below test should really be "00\|0\|\|\| ". However,
	162	* the kernel's printf also produces a single 0 in that
	163	* case. This test case simply documents the current
	164	* behaviour.
	165	*/
	166	test("00\|0\|0\|0\|0", "%.2d\|%.1d\|%.0d\|%.*d\|%1.0d", 0, 0, 0, 0, 0, 0);
	167	#ifndef __CHAR_UNSIGNED__
	168	{
	169	/*
	170	* Passing a 'char' to a %02x specifier doesn't do
	171	* what was presumably the intention when char is
	172	* signed and the value is negative. One must either &
	173	* with 0xff or cast to u8.
	174	*/
	175	char val = -16;
	176	test("0xfffffff0\|0xf0\|0xf0", "%#02x\|%#02x\|%#02x", val, val & 0xff, (u8)val);
	177	}
	178	#endif
707cc728 RV	179	}
	180
	181	static void __init
	182	test_string(void)
	183	{
	184	test("", "%s%.0s", "", "123");
	185	test("ABCD\|abc\|123", "%s\|%.3s\|%.*s", "ABCD", "abcdef", 3, "123456");
	186	test("1 \| 2\|3 \| 4\|5 ", "%-3s\|%3s\|%-s\|%s\|%*s", "1", "2", 3, "3", 3, "4", -3, "5");
f176eb4c RV	187	test("1234 ", "%-10.4s", "123456");
f176eb4c RV	188	test(" 1234", "%10.4s", "123456");
707cc728	189	/*
f176eb4c RV	190	* POSIX and C99 say that a negative precision (which is only
	191	* possible to pass via a * argument) should be treated as if
	192	* the precision wasn't present, and that if the precision is
	193	* omitted (as in %.s), the precision should be taken to be
	194	* 0. However, the kernel's printf behave exactly opposite,
	195	* treating a negative precision as 0 and treating an omitted
	196	* precision specifier as if no precision was given.
	197	*
	198	* These test cases document the current behaviour; should
	199	* anyone ever feel the need to follow the standards more
	200	* closely, this can be revisited.
707cc728	201	*/
f176eb4c RV	202	test(" ", "%4.*s", -5, "123456");
f176eb4c RV	203	test("123456", "%.s", "123456");
707cc728 RV	204	test("a\|\|", "%.s\|%.0s\|%.*s", "a", "b", 0, "c");
	205	test("a \| \| ", "%-3.s\|%-3.0s\|%-3.*s", "a", "b", 0, "c");
	206	}
	207
ad67b74d TH	208	#define PLAIN_BUF_SIZE 64 /* leave some space so we don't oops */
	209
	210	#if BITS_PER_LONG == 64
	211
	212	#define PTR_WIDTH 16
c604b407	213	#define PTR ((void *)0xffff0123456789abUL)
ad67b74d	214	#define PTR_STR "ffff0123456789ab"
ce041c43	215	#define PTR_VAL_NO_CRNG "(____ptrval____)"
ad67b74d TH	216	#define ZEROS "00000000" /* hex 32 zero bits */
	217
	218	static int __init
	219	plain_format(void)
	220	{
	221	char buf[PLAIN_BUF_SIZE];
	222	int nchars;
	223
	224	nchars = snprintf(buf, PLAIN_BUF_SIZE, "%p", PTR);
	225
ce041c43 TE	226	if (nchars != PTR_WIDTH)
	227	return -1;
	228
	229	if (strncmp(buf, PTR_VAL_NO_CRNG, PTR_WIDTH) == 0) {
	230	pr_warn("crng possibly not yet initialized. plain 'p' buffer contains \"%s\"",
	231	PTR_VAL_NO_CRNG);
	232	return 0;
	233	}
	234
	235	if (strncmp(buf, ZEROS, strlen(ZEROS)) != 0)
ad67b74d TH	236	return -1;
	237
	238	return 0;
	239	}
	240
	241	#else
	242
	243	#define PTR_WIDTH 8
	244	#define PTR ((void *)0x456789ab)
	245	#define PTR_STR "456789ab"
ce041c43	246	#define PTR_VAL_NO_CRNG "(ptrval)"
3e5903eb	247	#define ZEROS ""
ad67b74d TH	248
	249	static int __init
	250	plain_format(void)
	251	{
	252	/* Format is implicitly tested for 32 bit machines by plain_hash() */
	253	return 0;
	254	}
	255
	256	#endif /* BITS_PER_LONG == 64 */
	257
	258	static int __init
4d42c447	259	plain_hash_to_buffer(const void p, char buf, size_t len)
ad67b74d	260	{
ad67b74d TH	261	int nchars;
ad67b74d TH	262
4d42c447	263	nchars = snprintf(buf, len, "%p", p);
ad67b74d	264
ce041c43 TE	265	if (nchars != PTR_WIDTH)
	266	return -1;
	267
	268	if (strncmp(buf, PTR_VAL_NO_CRNG, PTR_WIDTH) == 0) {
	269	pr_warn("crng possibly not yet initialized. plain 'p' buffer contains \"%s\"",
	270	PTR_VAL_NO_CRNG);
	271	return 0;
	272	}
	273
4d42c447 AS	274	return 0;
	275	}
	276
4d42c447 AS	277	static int __init
	278	plain_hash(void)
	279	{
	280	char buf[PLAIN_BUF_SIZE];
	281	int ret;
	282
	283	ret = plain_hash_to_buffer(PTR, buf, PLAIN_BUF_SIZE);
	284	if (ret)
	285	return ret;
	286
ce041c43	287	if (strncmp(buf, PTR_STR, PTR_WIDTH) == 0)
ad67b74d TH	288	return -1;
	289
	290	return 0;
	291	}
	292
	293	/*
	294	* We can't use test() to test %p because we don't know what output to expect
	295	* after an address is hashed.
	296	*/
707cc728 RV	297	static void __init
	298	plain(void)
	299	{
ad67b74d	300	int err;
707cc728	301
ad67b74d TH	302	err = plain_hash();
	303	if (err) {
	304	pr_warn("plain 'p' does not appear to be hashed\n");
	305	failed_tests++;
	306	return;
	307	}
	308
	309	err = plain_format();
	310	if (err) {
	311	pr_warn("hashing plain 'p' has unexpected format\n");
	312	failed_tests++;
	313	}
707cc728 RV	314	}
707cc728 RV	315
4d42c447 AS	316	static void __init
	317	test_hashed(const char fmt, const void p)
	318	{
	319	char buf[PLAIN_BUF_SIZE];
	320	int ret;
	321
	322	/*
	323	* No need to increase failed test counter since this is assumed
	324	* to be called after plain().
	325	*/
	326	ret = plain_hash_to_buffer(p, buf, PLAIN_BUF_SIZE);
	327	if (ret)
	328	return;
	329
	330	test(buf, fmt, p);
	331	}
	332
3e5903eb PM	333	static void __init
	334	null_pointer(void)
	335	{
	336	test_hashed("%p", NULL);
	337	test(ZEROS "00000000", "%px", NULL);
	338	test("(null)", "%pE", NULL);
	339	}
	340
	341	#define PTR_INVALID ((void *)0x000000ab)
	342
	343	static void __init
	344	invalid_pointer(void)
	345	{
	346	test_hashed("%p", PTR_INVALID);
	347	test(ZEROS "000000ab", "%px", PTR_INVALID);
	348	test("(efault)", "%pE", PTR_INVALID);
	349	}
	350
707cc728 RV	351	static void __init
	352	symbol_ptr(void)
	353	{
	354	}
	355
	356	static void __init
	357	kernel_ptr(void)
	358	{
ad67b74d	359	/* We can't test this without access to kptr_restrict. */
707cc728 RV	360	}
	361
	362	static void __init
	363	struct_resource(void)
	364	{
	365	}
	366
	367	static void __init
	368	addr(void)
	369	{
	370	}
	371
	372	static void __init
	373	escaped_str(void)
	374	{
	375	}
	376
	377	static void __init
	378	hex_string(void)
	379	{
	380	const char buf[3] = {0xc0, 0xff, 0xee};
	381
	382	test("c0 ff ee\|c0:ff:ee\|c0-ff-ee\|c0ffee",
	383	"%3ph\|%3phC\|%3phD\|%3phN", buf, buf, buf, buf);
	384	test("c0 ff ee\|c0:ff:ee\|c0-ff-ee\|c0ffee",
	385	"%ph\|%phC\|%phD\|%phN", 3, buf, 3, buf, 3, buf, 3, buf);
	386	}
	387
	388	static void __init
	389	mac(void)
	390	{
	391	const u8 addr[6] = {0x2d, 0x48, 0xd6, 0xfc, 0x7a, 0x05};
	392
	393	test("2d:48:d6:fc:7a:05", "%pM", addr);
	394	test("05:7a:fc:d6:48:2d", "%pMR", addr);
	395	test("2d-48-d6-fc-7a-05", "%pMF", addr);
	396	test("2d48d6fc7a05", "%pm", addr);
	397	test("057afcd6482d", "%pmR", addr);
	398	}
	399
	400	static void __init
	401	ip4(void)
	402	{
	403	struct sockaddr_in sa;
	404
	405	sa.sin_family = AF_INET;
	406	sa.sin_port = cpu_to_be16(12345);
	407	sa.sin_addr.s_addr = cpu_to_be32(0x7f000001);
	408
	409	test("127.000.000.001\|127.0.0.1", "%pi4\|%pI4", &sa.sin_addr, &sa.sin_addr);
	410	test("127.000.000.001\|127.0.0.1", "%piS\|%pIS", &sa, &sa);
	411	sa.sin_addr.s_addr = cpu_to_be32(0x01020304);
	412	test("001.002.003.004:12345\|1.2.3.4:12345", "%piSp\|%pISp", &sa, &sa);
	413	}
	414
	415	static void __init
	416	ip6(void)
	417	{
	418	}
	419
	420	static void __init
	421	ip(void)
	422	{
	423	ip4();
424	ip6();
425	}
426
427	static void __init
428	uuid(void)
429	{
430	const char uuid[16] = {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
431	0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf};
432
433	test("00010203-0405-0607-0809-0a0b0c0d0e0f", "%pUb", uuid);
434	test("00010203-0405-0607-0809-0A0B0C0D0E0F", "%pUB", uuid);
435	test("03020100-0504-0706-0809-0a0b0c0d0e0f", "%pUl", uuid);
436	test("03020100-0504-0706-0809-0A0B0C0D0E0F", "%pUL", uuid);
437	}
438
251c7234 RV	439	static struct dentry test_dentry[4] __initdata = {
	440	{ .d_parent = &test_dentry[0],
	441	.d_name = QSTR_INIT(test_dentry[0].d_iname, 3),
	442	.d_iname = "foo" },
	443	{ .d_parent = &test_dentry[0],
	444	.d_name = QSTR_INIT(test_dentry[1].d_iname, 5),
	445	.d_iname = "bravo" },
	446	{ .d_parent = &test_dentry[1],
	447	.d_name = QSTR_INIT(test_dentry[2].d_iname, 4),
	448	.d_iname = "alfa" },
	449	{ .d_parent = &test_dentry[2],
	450	.d_name = QSTR_INIT(test_dentry[3].d_iname, 5),
	451	.d_iname = "romeo" },
	452	};
	453
707cc728 RV	454	static void __init
	455	dentry(void)
	456	{
251c7234 RV	457	test("foo", "%pd", &test_dentry[0]);
	458	test("foo", "%pd2", &test_dentry[0]);
	459
cf6b7921 JH	460	test("(null)", "%pd", NULL);
cf6b7921 JH	461	test("(efault)", "%pd", PTR_INVALID);
cf6b7921 JH	462	test("(null)", "%pD", NULL);
	463	test("(efault)", "%pD", PTR_INVALID);
	464
251c7234 RV	465	test("romeo", "%pd", &test_dentry[3]);
	466	test("alfa/romeo", "%pd2", &test_dentry[3]);
	467	test("bravo/alfa/romeo", "%pd3", &test_dentry[3]);
	468	test("/bravo/alfa/romeo", "%pd4", &test_dentry[3]);
	469	test("/bravo/alfa", "%pd4", &test_dentry[2]);
	470
	471	test("bravo/alfa \|bravo/alfa ", "%-12pd2\|%*pd2", &test_dentry[2], -12, &test_dentry[2]);
	472	test(" bravo/alfa\| bravo/alfa", "%12pd2\|%*pd2", &test_dentry[2], 12, &test_dentry[2]);
707cc728 RV	473	}
	474
	475	static void __init
	476	struct_va_format(void)
	477	{
	478	}
	479
4d42c447 AS	480	static void __init
	481	struct_rtc_time(void)
	482	{
	483	/* 1543210543 */
	484	const struct rtc_time tm = {
	485	.tm_sec = 43,
	486	.tm_min = 35,
	487	.tm_hour = 5,
	488	.tm_mday = 26,
	489	.tm_mon = 10,
	490	.tm_year = 118,
	491	};
	492
0b74d4d7	493	test("(%ptR?)", "%pt", &tm);
4d42c447 AS	494	test("2018-11-26T05:35:43", "%ptR", &tm);
	495	test("0118-10-26T05:35:43", "%ptRr", &tm);
	496	test("05:35:43\|2018-11-26", "%ptRt\|%ptRd", &tm, &tm);
	497	test("05:35:43\|0118-10-26", "%ptRtr\|%ptRdr", &tm, &tm);
	498	test("05:35:43\|2018-11-26", "%ptRttr\|%ptRdtr", &tm, &tm);
	499	test("05:35:43 tr\|2018-11-26 tr", "%ptRt tr\|%ptRd tr", &tm, &tm);
	500	}
	501
707cc728 RV	502	static void __init
	503	struct_clk(void)
	504	{
	505	}
	506
857cca4d RV	507	static void __init
	508	large_bitmap(void)
	509	{
	510	const int nbits = 1 << 16;
2821fd0c	511	unsigned long *bits = bitmap_zalloc(nbits, GFP_KERNEL);
857cca4d RV	512	if (!bits)
	513	return;
	514
	515	bitmap_set(bits, 1, 20);
	516	bitmap_set(bits, 60000, 15);
	517	test("1-20,60000-60014", "%*pbl", nbits, bits);
2821fd0c	518	bitmap_free(bits);
857cca4d RV	519	}
857cca4d RV	520
707cc728 RV	521	static void __init
	522	bitmap(void)
	523	{
	524	DECLARE_BITMAP(bits, 20);
	525	const int primes[] = {2,3,5,7,11,13,17,19};
	526	int i;
	527
	528	bitmap_zero(bits, 20);
	529	test("00000\|00000", "%20pb\|%*pb", bits, 20, bits);
	530	test("\|", "%20pbl\|%*pbl", bits, 20, bits);
	531
	532	for (i = 0; i < ARRAY_SIZE(primes); ++i)
	533	set_bit(primes[i], bits);
	534	test("a28ac\|a28ac", "%20pb\|%*pb", bits, 20, bits);
	535	test("2-3,5,7,11,13,17,19\|2-3,5,7,11,13,17,19", "%20pbl\|%*pbl", bits, 20, bits);
	536
	537	bitmap_fill(bits, 20);
	538	test("fffff\|fffff", "%20pb\|%*pb", bits, 20, bits);
	539	test("0-19\|0-19", "%20pbl\|%*pbl", bits, 20, bits);
857cca4d RV	540
857cca4d RV	541	large_bitmap();
707cc728 RV	542	}
	543
	544	static void __init
	545	netdev_features(void)
	546	{
	547	}
	548
edf14cdb VB	549	static void __init
	550	flags(void)
	551	{
	552	unsigned long flags;
	553	gfp_t gfp;
	554	char *cmp_buffer;
	555
	556	flags = 0;
	557	test("", "%pGp", &flags);
	558
	559	/* Page flags should filter the zone id */
	560	flags = 1UL << NR_PAGEFLAGS;
	561	test("", "%pGp", &flags);
	562
	563	flags \|= 1UL << PG_uptodate \| 1UL << PG_dirty \| 1UL << PG_lru
	564	\| 1UL << PG_active \| 1UL << PG_swapbacked;
	565	test("uptodate\|dirty\|lru\|active\|swapbacked", "%pGp", &flags);
	566
	567
	568	flags = VM_READ \| VM_EXEC \| VM_MAYREAD \| VM_MAYWRITE \| VM_MAYEXEC
	569	\| VM_DENYWRITE;
	570	test("read\|exec\|mayread\|maywrite\|mayexec\|denywrite", "%pGv", &flags);
	571
	572	gfp = GFP_TRANSHUGE;
	573	test("GFP_TRANSHUGE", "%pGg", &gfp);
	574
	575	gfp = GFP_ATOMIC\|__GFP_DMA;
	576	test("GFP_ATOMIC\|GFP_DMA", "%pGg", &gfp);
	577
	578	gfp = __GFP_ATOMIC;
	579	test("__GFP_ATOMIC", "%pGg", &gfp);
	580
	581	cmp_buffer = kmalloc(BUF_SIZE, GFP_KERNEL);
	582	if (!cmp_buffer)
	583	return;
	584
	585	/* Any flags not translated by the table should remain numeric */
	586	gfp = ~__GFP_BITS_MASK;
	587	snprintf(cmp_buffer, BUF_SIZE, "%#lx", (unsigned long) gfp);
	588	test(cmp_buffer, "%pGg", &gfp);
	589
	590	snprintf(cmp_buffer, BUF_SIZE, "__GFP_ATOMIC\|%#lx",
	591	(unsigned long) gfp);
	592	gfp \|= __GFP_ATOMIC;
	593	test(cmp_buffer, "%pGg", &gfp);
	594
	595	kfree(cmp_buffer);
	596	}
	597
f1ce39df SA	598	static void __init fwnode_pointer(void)
	599	{
	600	const struct software_node softnodes[] = {
	601	{ .name = "first", },
	602	{ .name = "second", .parent = &softnodes[0], },
	603	{ .name = "third", .parent = &softnodes[1], },
	604	{ NULL /* Guardian */ }
	605	};
	606	const char * const full_name = "first/second/third";
	607	const char * const full_name_second = "first/second";
	608	const char * const second_name = "second";
	609	const char * const third_name = "third";
	610	int rval;
	611
	612	rval = software_node_register_nodes(softnodes);
	613	if (rval) {
	614	pr_warn("cannot register softnodes; rval %d\n", rval);
	615	return;
	616	}
	617
	618	test(full_name_second, "%pfw", software_node_fwnode(&softnodes[1]));
	619	test(full_name, "%pfw", software_node_fwnode(&softnodes[2]));
	620	test(full_name, "%pfwf", software_node_fwnode(&softnodes[2]));
	621	test(second_name, "%pfwP", software_node_fwnode(&softnodes[1]));
	622	test(third_name, "%pfwP", software_node_fwnode(&softnodes[2]));
	623
	624	software_node_unregister_nodes(softnodes);
	625	}
	626
57f5677e RV	627	static void __init
	628	errptr(void)
	629	{
	630	test("-1234", "%pe", ERR_PTR(-1234));
	631
	632	/* Check that %pe with a non-ERR_PTR gets treated as ordinary %p. */
	633	BUILD_BUG_ON(IS_ERR(PTR));
	634	test_hashed("%pe", PTR);
	635
	636	#ifdef CONFIG_SYMBOLIC_ERRNAME
	637	test("(-ENOTSOCK)", "(%pe)", ERR_PTR(-ENOTSOCK));
	638	test("(-EAGAIN)", "(%pe)", ERR_PTR(-EAGAIN));
	639	BUILD_BUG_ON(EAGAIN != EWOULDBLOCK);
	640	test("(-EAGAIN)", "(%pe)", ERR_PTR(-EWOULDBLOCK));
	641	test("[-EIO ]", "[%-8pe]", ERR_PTR(-EIO));
	642	test("[ -EIO]", "[%8pe]", ERR_PTR(-EIO));
	643	test("-EPROBE_DEFER", "%pe", ERR_PTR(-EPROBE_DEFER));
	644	#endif
	645	}
	646
707cc728 RV	647	static void __init
	648	test_pointer(void)
	649	{
	650	plain();
3e5903eb PM	651	null_pointer();
3e5903eb PM	652	invalid_pointer();
707cc728 RV	653	symbol_ptr();
	654	kernel_ptr();
	655	struct_resource();
	656	addr();
	657	escaped_str();
	658	hex_string();
	659	mac();
	660	ip();
	661	uuid();
	662	dentry();
	663	struct_va_format();
4d42c447	664	struct_rtc_time();
707cc728 RV	665	struct_clk();
	666	bitmap();
	667	netdev_features();
edf14cdb	668	flags();
57f5677e	669	errptr();
f1ce39df	670	fwnode_pointer();
707cc728 RV	671	}
707cc728 RV	672
6b1a4d5b	673	static void __init selftest(void)
707cc728	674	{
331e4deb RV	675	alloced_buffer = kmalloc(BUF_SIZE + 2*PAD_SIZE, GFP_KERNEL);
331e4deb RV	676	if (!alloced_buffer)
6b1a4d5b	677	return;
331e4deb	678	test_buffer = alloced_buffer + PAD_SIZE;
707cc728 RV	679
	680	test_basic();
	681	test_number();
	682	test_string();
	683	test_pointer();
	684
331e4deb	685	kfree(alloced_buffer);
707cc728 RV	686	}
707cc728 RV	687
6b1a4d5b	688	KSTM_MODULE_LOADERS(test_printf);
707cc728 RV	689	MODULE_AUTHOR("Rasmus Villemoes <linux@rasmusvillemoes.dk>");
707cc728 RV	690	MODULE_LICENSE("GPL");