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git://git.yoctoproject.org/linux-yocto.git
synced 2025-10-22 23:13:01 +02:00
printf: break kunit into test cases
Move all tests into `printf_test_cases`. This gives us nicer output in the event of a failure. Combine `plain_format` and `plain_hash` into `hash_pointer` since they're testing the same scenario. Signed-off-by: Tamir Duberstein <tamird@gmail.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Tested-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20250307-printf-kunit-convert-v6-2-4d85c361c241@gmail.com Signed-off-by: Kees Cook <kees@kernel.org>
This commit is contained in:
parent
7a79e7daa8
commit
81a03aa9b8
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@ -38,10 +38,8 @@ static unsigned int total_tests;
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static char *test_buffer;
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static char *alloced_buffer;
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static struct kunit *kunittest;
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static void __printf(4, 0)
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do_test(int bufsize, const char *expect, int elen,
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static void __printf(5, 0)
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do_test(struct kunit *kunittest, int bufsize, const char *expect, int elen,
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const char *fmt, va_list ap)
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{
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va_list aq;
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@ -102,8 +100,8 @@ do_test(int bufsize, const char *expect, int elen,
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}
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}
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static void __printf(3, 4)
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__test(const char *expect, int elen, const char *fmt, ...)
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static void __printf(4, 5)
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__test(struct kunit *kunittest, const char *expect, int elen, const char *fmt, ...)
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{
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va_list ap;
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int rand;
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@ -124,11 +122,11 @@ __test(const char *expect, int elen, const char *fmt, ...)
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* enough and 0), and then we also test that kvasprintf would
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* be able to print it as expected.
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*/
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do_test(BUF_SIZE, expect, elen, fmt, ap);
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do_test(kunittest, BUF_SIZE, expect, elen, fmt, ap);
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rand = get_random_u32_inclusive(1, elen + 1);
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/* Since elen < BUF_SIZE, we have 1 <= rand <= BUF_SIZE. */
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do_test(rand, expect, elen, fmt, ap);
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do_test(0, expect, elen, fmt, ap);
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do_test(kunittest, rand, expect, elen, fmt, ap);
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do_test(kunittest, 0, expect, elen, fmt, ap);
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p = kvasprintf(GFP_KERNEL, fmt, ap);
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if (p) {
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@ -144,10 +142,10 @@ __test(const char *expect, int elen, const char *fmt, ...)
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}
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#define test(expect, fmt, ...) \
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__test(expect, strlen(expect), fmt, ##__VA_ARGS__)
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__test(kunittest, expect, strlen(expect), fmt, ##__VA_ARGS__)
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static void
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test_basic(void)
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test_basic(struct kunit *kunittest)
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{
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/* Work around annoying "warning: zero-length gnu_printf format string". */
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char nul = '\0';
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@ -155,11 +153,11 @@ test_basic(void)
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test("", &nul);
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test("100%", "100%%");
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test("xxx%yyy", "xxx%cyyy", '%');
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__test("xxx\0yyy", 7, "xxx%cyyy", '\0');
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__test(kunittest, "xxx\0yyy", 7, "xxx%cyyy", '\0');
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}
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static void
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test_number(void)
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test_number(struct kunit *kunittest)
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{
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test("0x1234abcd ", "%#-12x", 0x1234abcd);
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test(" 0x1234abcd", "%#12x", 0x1234abcd);
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@ -181,7 +179,7 @@ test_number(void)
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}
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static void
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test_string(void)
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test_string(struct kunit *kunittest)
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{
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test("", "%s%.0s", "", "123");
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test("ABCD|abc|123", "%s|%.3s|%.*s", "ABCD", "abcdef", 3, "123456");
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@ -218,30 +216,6 @@ test_string(void)
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#define ZEROS "00000000" /* hex 32 zero bits */
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#define ONES "ffffffff" /* hex 32 one bits */
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static int
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plain_format(void)
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{
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char buf[PLAIN_BUF_SIZE];
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int nchars;
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nchars = snprintf(buf, PLAIN_BUF_SIZE, "%p", PTR);
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if (nchars != PTR_WIDTH)
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return -1;
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if (strncmp(buf, PTR_VAL_NO_CRNG, PTR_WIDTH) == 0) {
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kunit_warn(kunittest,
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"crng possibly not yet initialized. plain 'p' buffer contains \"%s\"\n",
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PTR_VAL_NO_CRNG);
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return 0;
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}
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if (strncmp(buf, ZEROS, strlen(ZEROS)) != 0)
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return -1;
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return 0;
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}
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#else
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#define PTR_WIDTH 8
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@ -251,90 +225,47 @@ plain_format(void)
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#define ZEROS ""
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#define ONES ""
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static int
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plain_format(void)
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{
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/* Format is implicitly tested for 32 bit machines by plain_hash() */
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return 0;
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}
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#endif /* BITS_PER_LONG == 64 */
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static int
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plain_hash_to_buffer(const void *p, char *buf, size_t len)
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static void
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plain_hash_to_buffer(struct kunit *kunittest, const void *p, char *buf, size_t len)
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{
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int nchars;
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nchars = snprintf(buf, len, "%p", p);
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if (nchars != PTR_WIDTH)
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return -1;
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KUNIT_ASSERT_EQ(kunittest, snprintf(buf, len, "%p", p), PTR_WIDTH);
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if (strncmp(buf, PTR_VAL_NO_CRNG, PTR_WIDTH) == 0) {
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kunit_warn(kunittest,
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kunit_skip(kunittest,
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"crng possibly not yet initialized. plain 'p' buffer contains \"%s\"\n",
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PTR_VAL_NO_CRNG);
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return 0;
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}
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return 0;
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}
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static int
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plain_hash(void)
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{
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char buf[PLAIN_BUF_SIZE];
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int ret;
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ret = plain_hash_to_buffer(PTR, buf, PLAIN_BUF_SIZE);
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if (ret)
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return ret;
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if (strncmp(buf, PTR_STR, PTR_WIDTH) == 0)
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return -1;
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return 0;
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}
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/*
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* We can't use test() to test %p because we don't know what output to expect
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* after an address is hashed.
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*/
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static void
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plain(void)
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{
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int err;
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if (no_hash_pointers) {
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kunit_warn(kunittest, "skipping plain 'p' tests");
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return;
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}
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err = plain_hash();
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if (err) {
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KUNIT_FAIL(kunittest, "plain 'p' does not appear to be hashed\n");
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return;
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}
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err = plain_format();
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if (err) {
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KUNIT_FAIL(kunittest, "hashing plain 'p' has unexpected format\n");
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}
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}
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static void
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test_hashed(const char *fmt, const void *p)
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hash_pointer(struct kunit *kunittest)
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{
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if (no_hash_pointers)
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kunit_skip(kunittest, "hash pointers disabled");
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char buf[PLAIN_BUF_SIZE];
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int ret;
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plain_hash_to_buffer(kunittest, PTR, buf, PLAIN_BUF_SIZE);
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/*
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* No need to increase failed test counter since this is assumed
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* to be called after plain().
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* The hash of %p is unpredictable, therefore test() cannot be used.
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*
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* Instead verify that the first 32 bits are zeros on a 64-bit system
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* and that the non-hashed value is not printed.
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*/
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ret = plain_hash_to_buffer(p, buf, PLAIN_BUF_SIZE);
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if (ret)
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return;
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KUNIT_EXPECT_MEMEQ(kunittest, buf, ZEROS, strlen(ZEROS));
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KUNIT_EXPECT_MEMNEQ(kunittest, buf, PTR_STR, PTR_WIDTH);
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}
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static void
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test_hashed(struct kunit *kunittest, const char *fmt, const void *p)
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{
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char buf[PLAIN_BUF_SIZE];
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plain_hash_to_buffer(kunittest, p, buf, PLAIN_BUF_SIZE);
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test(buf, fmt, p);
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}
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@ -343,7 +274,7 @@ test_hashed(const char *fmt, const void *p)
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* NULL pointers aren't hashed.
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*/
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static void
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null_pointer(void)
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null_pointer(struct kunit *kunittest)
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{
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test(ZEROS "00000000", "%p", NULL);
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test(ZEROS "00000000", "%px", NULL);
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@ -354,7 +285,7 @@ null_pointer(void)
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* Error pointers aren't hashed.
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*/
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static void
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error_pointer(void)
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error_pointer(struct kunit *kunittest)
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{
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test(ONES "fffffff5", "%p", ERR_PTR(-11));
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test(ONES "fffffff5", "%px", ERR_PTR(-11));
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@ -364,26 +295,26 @@ error_pointer(void)
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#define PTR_INVALID ((void *)0x000000ab)
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static void
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invalid_pointer(void)
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invalid_pointer(struct kunit *kunittest)
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{
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test_hashed("%p", PTR_INVALID);
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test_hashed(kunittest, "%p", PTR_INVALID);
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test(ZEROS "000000ab", "%px", PTR_INVALID);
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test("(efault)", "%pE", PTR_INVALID);
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}
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static void
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symbol_ptr(void)
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symbol_ptr(struct kunit *kunittest)
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{
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}
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static void
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kernel_ptr(void)
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kernel_ptr(struct kunit *kunittest)
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{
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/* We can't test this without access to kptr_restrict. */
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}
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static void
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struct_resource(void)
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struct_resource(struct kunit *kunittest)
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{
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struct resource test_resource = {
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.start = 0xc0ffee00,
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}
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static void
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struct_range(void)
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struct_range(struct kunit *kunittest)
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{
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struct range test_range = DEFINE_RANGE(0xc0ffee00ba5eba11,
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0xc0ffee00ba5eba11);
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}
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static void
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addr(void)
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addr(struct kunit *kunittest)
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{
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}
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static void
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escaped_str(void)
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escaped_str(struct kunit *kunittest)
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{
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}
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static void
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hex_string(void)
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hex_string(struct kunit *kunittest)
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{
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const char buf[3] = {0xc0, 0xff, 0xee};
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@ -469,7 +400,7 @@ hex_string(void)
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}
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static void
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mac(void)
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mac(struct kunit *kunittest)
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{
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const u8 addr[6] = {0x2d, 0x48, 0xd6, 0xfc, 0x7a, 0x05};
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@ -481,7 +412,7 @@ mac(void)
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}
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static void
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ip4(void)
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ip4(struct kunit *kunittest)
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{
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struct sockaddr_in sa;
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@ -496,19 +427,12 @@ ip4(void)
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}
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static void
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ip6(void)
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ip6(struct kunit *kunittest)
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{
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}
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static void
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ip(void)
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{
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ip4();
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ip6();
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}
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static void
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uuid(void)
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uuid(struct kunit *kunittest)
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{
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const char uuid[16] = {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
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0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf};
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@ -535,7 +459,7 @@ static struct dentry test_dentry[4] = {
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};
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static void
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dentry(void)
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dentry(struct kunit *kunittest)
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{
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test("foo", "%pd", &test_dentry[0]);
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test("foo", "%pd2", &test_dentry[0]);
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@ -556,12 +480,12 @@ dentry(void)
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}
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static void
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struct_va_format(void)
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struct_va_format(struct kunit *kunittest)
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{
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}
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static void
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time_and_date(void)
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time_and_date(struct kunit *kunittest)
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{
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/* 1543210543 */
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const struct rtc_time tm = {
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@ -595,12 +519,12 @@ time_and_date(void)
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}
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static void
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struct_clk(void)
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struct_clk(struct kunit *kunittest)
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{
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}
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static void
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large_bitmap(void)
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large_bitmap(struct kunit *kunittest)
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{
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const int nbits = 1 << 16;
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unsigned long *bits = bitmap_zalloc(nbits, GFP_KERNEL);
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@ -614,7 +538,7 @@ large_bitmap(void)
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}
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static void
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bitmap(void)
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bitmap(struct kunit *kunittest)
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{
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DECLARE_BITMAP(bits, 20);
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const int primes[] = {2,3,5,7,11,13,17,19};
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@ -633,11 +557,11 @@ bitmap(void)
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test("fffff|fffff", "%20pb|%*pb", bits, 20, bits);
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test("0-19|0-19", "%20pbl|%*pbl", bits, 20, bits);
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large_bitmap();
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large_bitmap(kunittest);
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}
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static void
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netdev_features(void)
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netdev_features(struct kunit *kunittest)
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{
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}
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@ -663,8 +587,8 @@ static const struct page_flags_test pft[] = {
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};
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static void
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page_flags_test(int section, int node, int zone, int last_cpupid,
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int kasan_tag, unsigned long flags, const char *name,
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page_flags_test(struct kunit *kunittest, int section, int node, int zone,
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int last_cpupid, int kasan_tag, unsigned long flags, const char *name,
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char *cmp_buf)
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{
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unsigned long values[] = {section, node, zone, last_cpupid, kasan_tag};
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@ -701,25 +625,24 @@ page_flags_test(int section, int node, int zone, int last_cpupid,
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}
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static void
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flags(void)
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flags(struct kunit *kunittest)
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{
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unsigned long flags;
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char *cmp_buffer;
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gfp_t gfp;
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cmp_buffer = kmalloc(BUF_SIZE, GFP_KERNEL);
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if (!cmp_buffer)
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return;
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cmp_buffer = kunit_kmalloc(kunittest, BUF_SIZE, GFP_KERNEL);
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KUNIT_ASSERT_NOT_NULL(kunittest, cmp_buffer);
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flags = 0;
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page_flags_test(0, 0, 0, 0, 0, flags, "", cmp_buffer);
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page_flags_test(kunittest, 0, 0, 0, 0, 0, flags, "", cmp_buffer);
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flags = 1UL << NR_PAGEFLAGS;
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page_flags_test(0, 0, 0, 0, 0, flags, "", cmp_buffer);
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page_flags_test(kunittest, 0, 0, 0, 0, 0, flags, "", cmp_buffer);
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flags |= 1UL << PG_uptodate | 1UL << PG_dirty | 1UL << PG_lru
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| 1UL << PG_active | 1UL << PG_swapbacked;
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page_flags_test(1, 1, 1, 0x1fffff, 1, flags,
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page_flags_test(kunittest, 1, 1, 1, 0x1fffff, 1, flags,
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"uptodate|dirty|lru|active|swapbacked",
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cmp_buffer);
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@ -744,11 +667,9 @@ flags(void)
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(unsigned long) gfp);
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gfp |= __GFP_HIGH;
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test(cmp_buffer, "%pGg", &gfp);
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kfree(cmp_buffer);
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}
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static void fwnode_pointer(void)
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static void fwnode_pointer(struct kunit *kunittest)
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{
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const struct software_node first = { .name = "first" };
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const struct software_node second = { .name = "second", .parent = &first };
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@ -762,8 +683,7 @@ static void fwnode_pointer(void)
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rval = software_node_register_node_group(group);
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if (rval) {
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kunit_warn(kunittest, "cannot register softnodes; rval %d\n", rval);
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return;
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kunit_skip(kunittest, "cannot register softnodes; rval %d\n", rval);
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}
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test(full_name_second, "%pfw", software_node_fwnode(&second));
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@ -775,7 +695,7 @@ static void fwnode_pointer(void)
|
|||
software_node_unregister_node_group(group);
|
||||
}
|
||||
|
||||
static void fourcc_pointer(void)
|
||||
static void fourcc_pointer(struct kunit *kunittest)
|
||||
{
|
||||
struct {
|
||||
u32 code;
|
||||
|
@ -793,13 +713,13 @@ static void fourcc_pointer(void)
|
|||
}
|
||||
|
||||
static void
|
||||
errptr(void)
|
||||
errptr(struct kunit *kunittest)
|
||||
{
|
||||
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);
|
||||
test_hashed(kunittest, "%pe", PTR);
|
||||
|
||||
#ifdef CONFIG_SYMBOLIC_ERRNAME
|
||||
test("(-ENOTSOCK)", "(%pe)", ERR_PTR(-ENOTSOCK));
|
||||
|
@ -812,65 +732,54 @@ errptr(void)
|
|||
#endif
|
||||
}
|
||||
|
||||
static void
|
||||
test_pointer(void)
|
||||
{
|
||||
plain();
|
||||
null_pointer();
|
||||
error_pointer();
|
||||
invalid_pointer();
|
||||
symbol_ptr();
|
||||
kernel_ptr();
|
||||
struct_resource();
|
||||
struct_range();
|
||||
addr();
|
||||
escaped_str();
|
||||
hex_string();
|
||||
mac();
|
||||
ip();
|
||||
uuid();
|
||||
dentry();
|
||||
struct_va_format();
|
||||
time_and_date();
|
||||
struct_clk();
|
||||
bitmap();
|
||||
netdev_features();
|
||||
flags();
|
||||
errptr();
|
||||
fwnode_pointer();
|
||||
fourcc_pointer();
|
||||
}
|
||||
|
||||
static void printf_test(struct kunit *test)
|
||||
{
|
||||
alloced_buffer = kmalloc(BUF_SIZE + 2*PAD_SIZE, GFP_KERNEL);
|
||||
if (!alloced_buffer)
|
||||
return;
|
||||
test_buffer = alloced_buffer + PAD_SIZE;
|
||||
|
||||
kunittest = test;
|
||||
|
||||
test_basic();
|
||||
test_number();
|
||||
test_string();
|
||||
test_pointer();
|
||||
|
||||
kfree(alloced_buffer);
|
||||
}
|
||||
|
||||
static int printf_suite_init(struct kunit_suite *suite)
|
||||
{
|
||||
total_tests = 0;
|
||||
|
||||
alloced_buffer = kmalloc(BUF_SIZE + 2*PAD_SIZE, GFP_KERNEL);
|
||||
if (!alloced_buffer)
|
||||
return -ENOMEM;
|
||||
test_buffer = alloced_buffer + PAD_SIZE;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void printf_suite_exit(struct kunit_suite *suite)
|
||||
{
|
||||
kfree(alloced_buffer);
|
||||
|
||||
kunit_info(suite, "ran %u tests\n", total_tests);
|
||||
}
|
||||
|
||||
static struct kunit_case printf_test_cases[] = {
|
||||
KUNIT_CASE(printf_test),
|
||||
KUNIT_CASE(test_basic),
|
||||
KUNIT_CASE(test_number),
|
||||
KUNIT_CASE(test_string),
|
||||
KUNIT_CASE(hash_pointer),
|
||||
KUNIT_CASE(null_pointer),
|
||||
KUNIT_CASE(error_pointer),
|
||||
KUNIT_CASE(invalid_pointer),
|
||||
KUNIT_CASE(symbol_ptr),
|
||||
KUNIT_CASE(kernel_ptr),
|
||||
KUNIT_CASE(struct_resource),
|
||||
KUNIT_CASE(struct_range),
|
||||
KUNIT_CASE(addr),
|
||||
KUNIT_CASE(escaped_str),
|
||||
KUNIT_CASE(hex_string),
|
||||
KUNIT_CASE(mac),
|
||||
KUNIT_CASE(ip4),
|
||||
KUNIT_CASE(ip6),
|
||||
KUNIT_CASE(uuid),
|
||||
KUNIT_CASE(dentry),
|
||||
KUNIT_CASE(struct_va_format),
|
||||
KUNIT_CASE(time_and_date),
|
||||
KUNIT_CASE(struct_clk),
|
||||
KUNIT_CASE(bitmap),
|
||||
KUNIT_CASE(netdev_features),
|
||||
KUNIT_CASE(flags),
|
||||
KUNIT_CASE(errptr),
|
||||
KUNIT_CASE(fwnode_pointer),
|
||||
KUNIT_CASE(fourcc_pointer),
|
||||
{}
|
||||
};
|
||||
|
||||
|
|
Loading…
Reference in New Issue
Block a user