[linux.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 */
#define ONES "ffffffff"		/* hex 32 one 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 ""
#define ONES ""

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);
}

/*
 * NULL pointers aren't hashed.
 */
static void __init
null_pointer(void)
{
	test(ZEROS "00000000", "%p", NULL);
	test(ZEROS "00000000", "%px", NULL);
	test("(null)", "%pE", NULL);
}

/*
 * Error pointers aren't hashed.
 */
static void __init
error_pointer(void)
{
	test(ONES "fffffff5", "%p", ERR_PTR(-11));
	test(ONES "fffffff5", "%px", ERR_PTR(-11));
	test("(efault)", "%pE", ERR_PTR(-11));
}

#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
time_and_date(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,
	};
	/* 2019-01-04T15:32:23 */
	time64_t t = 1546615943;

	test("(%pt?)", "%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);

	test("2019-01-04T15:32:23", "%ptT", &t);
	test("0119-00-04T15:32:23", "%ptTr", &t);
	test("15:32:23|2019-01-04", "%ptTt|%ptTd", &t, &t);
	test("15:32:23|0119-00-04", "%ptTtr|%ptTdr", &t, &t);
}

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(&softnodes[2]);
	software_node_unregister(&softnodes[1]);
	software_node_unregister(&softnodes[0]);
}

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();
	error_pointer();
	invalid_pointer();
	symbol_ptr();
	kernel_ptr();
	struct_resource();
	addr();
	escaped_str();
	hex_string();
	mac();
	ip();
	uuid();
	dentry();
	struct_va_format();
	time_and_date();
	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 <[email protected]>");
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	216	#define ZEROS "00000000" /* hex 32 zero bits */
7bd57fbc	217	#define ONES "ffffffff" /* hex 32 one bits */
ad67b74d TH	218
	219	static int __init
	220	plain_format(void)
	221	{
	222	char buf[PLAIN_BUF_SIZE];
	223	int nchars;
	224
	225	nchars = snprintf(buf, PLAIN_BUF_SIZE, "%p", PTR);
	226
ce041c43 TE	227	if (nchars != PTR_WIDTH)
	228	return -1;
	229
	230	if (strncmp(buf, PTR_VAL_NO_CRNG, PTR_WIDTH) == 0) {
	231	pr_warn("crng possibly not yet initialized. plain 'p' buffer contains \"%s\"",
	232	PTR_VAL_NO_CRNG);
	233	return 0;
	234	}
	235
	236	if (strncmp(buf, ZEROS, strlen(ZEROS)) != 0)
ad67b74d TH	237	return -1;
	238
	239	return 0;
	240	}
	241
	242	#else
	243
	244	#define PTR_WIDTH 8
	245	#define PTR ((void *)0x456789ab)
	246	#define PTR_STR "456789ab"
ce041c43	247	#define PTR_VAL_NO_CRNG "(ptrval)"
3e5903eb	248	#define ZEROS ""
7bd57fbc	249	#define ONES ""
ad67b74d TH	250
	251	static int __init
	252	plain_format(void)
	253	{
	254	/* Format is implicitly tested for 32 bit machines by plain_hash() */
	255	return 0;
	256	}
	257
	258	#endif /* BITS_PER_LONG == 64 */
	259
	260	static int __init
4d42c447	261	plain_hash_to_buffer(const void p, char buf, size_t len)
ad67b74d	262	{
ad67b74d TH	263	int nchars;
ad67b74d TH	264
4d42c447	265	nchars = snprintf(buf, len, "%p", p);
ad67b74d	266
ce041c43 TE	267	if (nchars != PTR_WIDTH)
	268	return -1;
	269
	270	if (strncmp(buf, PTR_VAL_NO_CRNG, PTR_WIDTH) == 0) {
	271	pr_warn("crng possibly not yet initialized. plain 'p' buffer contains \"%s\"",
	272	PTR_VAL_NO_CRNG);
	273	return 0;
	274	}
	275
4d42c447 AS	276	return 0;
	277	}
	278
4d42c447 AS	279	static int __init
	280	plain_hash(void)
	281	{
	282	char buf[PLAIN_BUF_SIZE];
	283	int ret;
	284
	285	ret = plain_hash_to_buffer(PTR, buf, PLAIN_BUF_SIZE);
	286	if (ret)
	287	return ret;
	288
ce041c43	289	if (strncmp(buf, PTR_STR, PTR_WIDTH) == 0)
ad67b74d TH	290	return -1;
	291
	292	return 0;
	293	}
	294
	295	/*
	296	* We can't use test() to test %p because we don't know what output to expect
	297	* after an address is hashed.
	298	*/
707cc728 RV	299	static void __init
	300	plain(void)
	301	{
ad67b74d	302	int err;
707cc728	303
ad67b74d TH	304	err = plain_hash();
	305	if (err) {
	306	pr_warn("plain 'p' does not appear to be hashed\n");
	307	failed_tests++;
	308	return;
	309	}
	310
	311	err = plain_format();
	312	if (err) {
	313	pr_warn("hashing plain 'p' has unexpected format\n");
	314	failed_tests++;
	315	}
707cc728 RV	316	}
707cc728 RV	317
4d42c447 AS	318	static void __init
	319	test_hashed(const char fmt, const void p)
	320	{
	321	char buf[PLAIN_BUF_SIZE];
	322	int ret;
	323
	324	/*
	325	* No need to increase failed test counter since this is assumed
	326	* to be called after plain().
	327	*/
	328	ret = plain_hash_to_buffer(p, buf, PLAIN_BUF_SIZE);
	329	if (ret)
	330	return;
	331
	332	test(buf, fmt, p);
	333	}
	334
7bd57fbc ID	335	/*
	336	* NULL pointers aren't hashed.
	337	*/
3e5903eb PM	338	static void __init
	339	null_pointer(void)
	340	{
7bd57fbc	341	test(ZEROS "00000000", "%p", NULL);
3e5903eb PM	342	test(ZEROS "00000000", "%px", NULL);
	343	test("(null)", "%pE", NULL);
	344	}
	345
7bd57fbc ID	346	/*
	347	* Error pointers aren't hashed.
	348	*/
	349	static void __init
	350	error_pointer(void)
	351	{
	352	test(ONES "fffffff5", "%p", ERR_PTR(-11));
	353	test(ONES "fffffff5", "%px", ERR_PTR(-11));
	354	test("(efault)", "%pE", ERR_PTR(-11));
	355	}
	356
3e5903eb PM	357	#define PTR_INVALID ((void *)0x000000ab)
	358
	359	static void __init
	360	invalid_pointer(void)
	361	{
	362	test_hashed("%p", PTR_INVALID);
	363	test(ZEROS "000000ab", "%px", PTR_INVALID);
	364	test("(efault)", "%pE", PTR_INVALID);
	365	}
	366
707cc728 RV	367	static void __init
	368	symbol_ptr(void)
	369	{
	370	}
	371
	372	static void __init
	373	kernel_ptr(void)
	374	{
ad67b74d	375	/* We can't test this without access to kptr_restrict. */
707cc728 RV	376	}
	377
	378	static void __init
	379	struct_resource(void)
	380	{
	381	}
	382
	383	static void __init
	384	addr(void)
	385	{
	386	}
	387
	388	static void __init
	389	escaped_str(void)
	390	{
	391	}
	392
	393	static void __init
	394	hex_string(void)
	395	{
	396	const char buf[3] = {0xc0, 0xff, 0xee};
	397
	398	test("c0 ff ee\|c0:ff:ee\|c0-ff-ee\|c0ffee",
	399	"%3ph\|%3phC\|%3phD\|%3phN", buf, buf, buf, buf);
	400	test("c0 ff ee\|c0:ff:ee\|c0-ff-ee\|c0ffee",
	401	"%ph\|%phC\|%phD\|%phN", 3, buf, 3, buf, 3, buf, 3, buf);
	402	}
	403
	404	static void __init
	405	mac(void)
	406	{
	407	const u8 addr[6] = {0x2d, 0x48, 0xd6, 0xfc, 0x7a, 0x05};
	408
	409	test("2d:48:d6:fc:7a:05", "%pM", addr);
	410	test("05:7a:fc:d6:48:2d", "%pMR", addr);
	411	test("2d-48-d6-fc-7a-05", "%pMF", addr);
	412	test("2d48d6fc7a05", "%pm", addr);
	413	test("057afcd6482d", "%pmR", addr);
	414	}
	415
	416	static void __init
	417	ip4(void)
	418	{
	419	struct sockaddr_in sa;
	420
	421	sa.sin_family = AF_INET;
	422	sa.sin_port = cpu_to_be16(12345);
	423	sa.sin_addr.s_addr = cpu_to_be32(0x7f000001);
	424
	425	test("127.000.000.001\|127.0.0.1", "%pi4\|%pI4", &sa.sin_addr, &sa.sin_addr);
	426	test("127.000.000.001\|127.0.0.1", "%piS\|%pIS", &sa, &sa);
	427	sa.sin_addr.s_addr = cpu_to_be32(0x01020304);
	428	test("001.002.003.004:12345\|1.2.3.4:12345", "%piSp\|%pISp", &sa, &sa);
	429	}
	430
	431	static void __init
	432	ip6(void)
	433	{
	434	}
	435
	436	static void __init
	437	ip(void)
	438	{
	439	ip4();
440	ip6();
441	}
442
443	static void __init
444	uuid(void)
445	{
446	const char uuid[16] = {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
447	0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf};
448
449	test("00010203-0405-0607-0809-0a0b0c0d0e0f", "%pUb", uuid);
450	test("00010203-0405-0607-0809-0A0B0C0D0E0F", "%pUB", uuid);
451	test("03020100-0504-0706-0809-0a0b0c0d0e0f", "%pUl", uuid);
452	test("03020100-0504-0706-0809-0A0B0C0D0E0F", "%pUL", uuid);
453	}
454
251c7234 RV	455	static struct dentry test_dentry[4] __initdata = {
	456	{ .d_parent = &test_dentry[0],
	457	.d_name = QSTR_INIT(test_dentry[0].d_iname, 3),
	458	.d_iname = "foo" },
	459	{ .d_parent = &test_dentry[0],
	460	.d_name = QSTR_INIT(test_dentry[1].d_iname, 5),
	461	.d_iname = "bravo" },
	462	{ .d_parent = &test_dentry[1],
	463	.d_name = QSTR_INIT(test_dentry[2].d_iname, 4),
	464	.d_iname = "alfa" },
	465	{ .d_parent = &test_dentry[2],
	466	.d_name = QSTR_INIT(test_dentry[3].d_iname, 5),
	467	.d_iname = "romeo" },
	468	};
	469
707cc728 RV	470	static void __init
	471	dentry(void)
	472	{
251c7234 RV	473	test("foo", "%pd", &test_dentry[0]);
	474	test("foo", "%pd2", &test_dentry[0]);
	475
cf6b7921 JH	476	test("(null)", "%pd", NULL);
cf6b7921 JH	477	test("(efault)", "%pd", PTR_INVALID);
cf6b7921 JH	478	test("(null)", "%pD", NULL);
	479	test("(efault)", "%pD", PTR_INVALID);
	480
251c7234 RV	481	test("romeo", "%pd", &test_dentry[3]);
	482	test("alfa/romeo", "%pd2", &test_dentry[3]);
	483	test("bravo/alfa/romeo", "%pd3", &test_dentry[3]);
	484	test("/bravo/alfa/romeo", "%pd4", &test_dentry[3]);
	485	test("/bravo/alfa", "%pd4", &test_dentry[2]);
	486
	487	test("bravo/alfa \|bravo/alfa ", "%-12pd2\|%*pd2", &test_dentry[2], -12, &test_dentry[2]);
	488	test(" bravo/alfa\| bravo/alfa", "%12pd2\|%*pd2", &test_dentry[2], 12, &test_dentry[2]);
707cc728 RV	489	}
	490
	491	static void __init
	492	struct_va_format(void)
	493	{
	494	}
	495
4d42c447	496	static void __init
7daac5b2	497	time_and_date(void)
4d42c447 AS	498	{
	499	/* 1543210543 */
	500	const struct rtc_time tm = {
	501	.tm_sec = 43,
	502	.tm_min = 35,
	503	.tm_hour = 5,
	504	.tm_mday = 26,
	505	.tm_mon = 10,
	506	.tm_year = 118,
	507	};
7daac5b2 AS	508	/* 2019-01-04T15:32:23 */
7daac5b2 AS	509	time64_t t = 1546615943;
4d42c447	510
7daac5b2	511	test("(%pt?)", "%pt", &tm);
4d42c447 AS	512	test("2018-11-26T05:35:43", "%ptR", &tm);
	513	test("0118-10-26T05:35:43", "%ptRr", &tm);
	514	test("05:35:43\|2018-11-26", "%ptRt\|%ptRd", &tm, &tm);
	515	test("05:35:43\|0118-10-26", "%ptRtr\|%ptRdr", &tm, &tm);
	516	test("05:35:43\|2018-11-26", "%ptRttr\|%ptRdtr", &tm, &tm);
	517	test("05:35:43 tr\|2018-11-26 tr", "%ptRt tr\|%ptRd tr", &tm, &tm);
7daac5b2 AS	518
	519	test("2019-01-04T15:32:23", "%ptT", &t);
	520	test("0119-00-04T15:32:23", "%ptTr", &t);
	521	test("15:32:23\|2019-01-04", "%ptTt\|%ptTd", &t, &t);
	522	test("15:32:23\|0119-00-04", "%ptTtr\|%ptTdr", &t, &t);
4d42c447 AS	523	}
4d42c447 AS	524
707cc728 RV	525	static void __init
	526	struct_clk(void)
	527	{
	528	}
	529
857cca4d RV	530	static void __init
	531	large_bitmap(void)
	532	{
	533	const int nbits = 1 << 16;
2821fd0c	534	unsigned long *bits = bitmap_zalloc(nbits, GFP_KERNEL);
857cca4d RV	535	if (!bits)
	536	return;
	537
	538	bitmap_set(bits, 1, 20);
	539	bitmap_set(bits, 60000, 15);
	540	test("1-20,60000-60014", "%*pbl", nbits, bits);
2821fd0c	541	bitmap_free(bits);
857cca4d RV	542	}
857cca4d RV	543
707cc728 RV	544	static void __init
	545	bitmap(void)
	546	{
	547	DECLARE_BITMAP(bits, 20);
	548	const int primes[] = {2,3,5,7,11,13,17,19};
	549	int i;
	550
	551	bitmap_zero(bits, 20);
	552	test("00000\|00000", "%20pb\|%*pb", bits, 20, bits);
	553	test("\|", "%20pbl\|%*pbl", bits, 20, bits);
	554
	555	for (i = 0; i < ARRAY_SIZE(primes); ++i)
	556	set_bit(primes[i], bits);
	557	test("a28ac\|a28ac", "%20pb\|%*pb", bits, 20, bits);
	558	test("2-3,5,7,11,13,17,19\|2-3,5,7,11,13,17,19", "%20pbl\|%*pbl", bits, 20, bits);
	559
	560	bitmap_fill(bits, 20);
	561	test("fffff\|fffff", "%20pb\|%*pb", bits, 20, bits);
	562	test("0-19\|0-19", "%20pbl\|%*pbl", bits, 20, bits);
857cca4d RV	563
857cca4d RV	564	large_bitmap();
707cc728 RV	565	}
	566
	567	static void __init
	568	netdev_features(void)
	569	{
	570	}
	571
edf14cdb VB	572	static void __init
	573	flags(void)
	574	{
	575	unsigned long flags;
	576	gfp_t gfp;
	577	char *cmp_buffer;
	578
	579	flags = 0;
	580	test("", "%pGp", &flags);
	581
	582	/* Page flags should filter the zone id */
	583	flags = 1UL << NR_PAGEFLAGS;
	584	test("", "%pGp", &flags);
	585
	586	flags \|= 1UL << PG_uptodate \| 1UL << PG_dirty \| 1UL << PG_lru
	587	\| 1UL << PG_active \| 1UL << PG_swapbacked;
	588	test("uptodate\|dirty\|lru\|active\|swapbacked", "%pGp", &flags);
	589
	590
	591	flags = VM_READ \| VM_EXEC \| VM_MAYREAD \| VM_MAYWRITE \| VM_MAYEXEC
	592	\| VM_DENYWRITE;
	593	test("read\|exec\|mayread\|maywrite\|mayexec\|denywrite", "%pGv", &flags);
	594
	595	gfp = GFP_TRANSHUGE;
	596	test("GFP_TRANSHUGE", "%pGg", &gfp);
	597
	598	gfp = GFP_ATOMIC\|__GFP_DMA;
	599	test("GFP_ATOMIC\|GFP_DMA", "%pGg", &gfp);
	600
	601	gfp = __GFP_ATOMIC;
	602	test("__GFP_ATOMIC", "%pGg", &gfp);
	603
	604	cmp_buffer = kmalloc(BUF_SIZE, GFP_KERNEL);
	605	if (!cmp_buffer)
	606	return;
	607
	608	/* Any flags not translated by the table should remain numeric */
	609	gfp = ~__GFP_BITS_MASK;
	610	snprintf(cmp_buffer, BUF_SIZE, "%#lx", (unsigned long) gfp);
	611	test(cmp_buffer, "%pGg", &gfp);
	612
	613	snprintf(cmp_buffer, BUF_SIZE, "__GFP_ATOMIC\|%#lx",
	614	(unsigned long) gfp);
	615	gfp \|= __GFP_ATOMIC;
	616	test(cmp_buffer, "%pGg", &gfp);
	617
	618	kfree(cmp_buffer);
	619	}
	620
f1ce39df SA	621	static void __init fwnode_pointer(void)
	622	{
	623	const struct software_node softnodes[] = {
	624	{ .name = "first", },
	625	{ .name = "second", .parent = &softnodes[0], },
	626	{ .name = "third", .parent = &softnodes[1], },
	627	{ NULL /* Guardian */ }
	628	};
	629	const char * const full_name = "first/second/third";
	630	const char * const full_name_second = "first/second";
	631	const char * const second_name = "second";
	632	const char * const third_name = "third";
	633	int rval;
	634
	635	rval = software_node_register_nodes(softnodes);
	636	if (rval) {
	637	pr_warn("cannot register softnodes; rval %d\n", rval);
	638	return;
	639	}
	640
	641	test(full_name_second, "%pfw", software_node_fwnode(&softnodes[1]));
	642	test(full_name, "%pfw", software_node_fwnode(&softnodes[2]));
	643	test(full_name, "%pfwf", software_node_fwnode(&softnodes[2]));
	644	test(second_name, "%pfwP", software_node_fwnode(&softnodes[1]));
	645	test(third_name, "%pfwP", software_node_fwnode(&softnodes[2]));
	646
46d26819 GKH	647	software_node_unregister(&softnodes[2]);
	648	software_node_unregister(&softnodes[1]);
	649	software_node_unregister(&softnodes[0]);
f1ce39df SA	650	}
f1ce39df SA	651
57f5677e RV	652	static void __init
	653	errptr(void)
	654	{
	655	test("-1234", "%pe", ERR_PTR(-1234));
	656
	657	/* Check that %pe with a non-ERR_PTR gets treated as ordinary %p. */
	658	BUILD_BUG_ON(IS_ERR(PTR));
	659	test_hashed("%pe", PTR);
	660
	661	#ifdef CONFIG_SYMBOLIC_ERRNAME
	662	test("(-ENOTSOCK)", "(%pe)", ERR_PTR(-ENOTSOCK));
	663	test("(-EAGAIN)", "(%pe)", ERR_PTR(-EAGAIN));
	664	BUILD_BUG_ON(EAGAIN != EWOULDBLOCK);
	665	test("(-EAGAIN)", "(%pe)", ERR_PTR(-EWOULDBLOCK));
	666	test("[-EIO ]", "[%-8pe]", ERR_PTR(-EIO));
	667	test("[ -EIO]", "[%8pe]", ERR_PTR(-EIO));
	668	test("-EPROBE_DEFER", "%pe", ERR_PTR(-EPROBE_DEFER));
	669	#endif
	670	}
	671
707cc728 RV	672	static void __init
	673	test_pointer(void)
	674	{
	675	plain();
3e5903eb	676	null_pointer();
7bd57fbc	677	error_pointer();
3e5903eb	678	invalid_pointer();
707cc728 RV	679	symbol_ptr();
	680	kernel_ptr();
	681	struct_resource();
	682	addr();
	683	escaped_str();
	684	hex_string();
	685	mac();
	686	ip();
	687	uuid();
	688	dentry();
	689	struct_va_format();
7daac5b2	690	time_and_date();
707cc728 RV	691	struct_clk();
	692	bitmap();
	693	netdev_features();
edf14cdb	694	flags();
57f5677e	695	errptr();
f1ce39df	696	fwnode_pointer();
707cc728 RV	697	}
707cc728 RV	698
6b1a4d5b	699	static void __init selftest(void)
707cc728	700	{
331e4deb RV	701	alloced_buffer = kmalloc(BUF_SIZE + 2*PAD_SIZE, GFP_KERNEL);
331e4deb RV	702	if (!alloced_buffer)
6b1a4d5b	703	return;
331e4deb	704	test_buffer = alloced_buffer + PAD_SIZE;
707cc728 RV	705
	706	test_basic();
	707	test_number();
	708	test_string();
	709	test_pointer();
	710
331e4deb	711	kfree(alloced_buffer);
707cc728 RV	712	}
707cc728 RV	713
6b1a4d5b	714	KSTM_MODULE_LOADERS(test_printf);
707cc728 RV	715	MODULE_AUTHOR("Rasmus Villemoes <[email protected]>");
707cc728 RV	716	MODULE_LICENSE("GPL");