diff options
Diffstat (limited to 'lib/test_printf.c')
| -rw-r--r-- | lib/test_printf.c | 172 |
1 files changed, 149 insertions, 23 deletions
diff --git a/lib/test_printf.c b/lib/test_printf.c index 2d9f520d2f27..4bd15a593fbd 100644 --- a/lib/test_printf.c +++ b/lib/test_printf.c @@ -30,11 +30,19 @@ #define PAD_SIZE 16 #define FILL_CHAR '$' -static unsigned total_tests __initdata; -static unsigned failed_tests __initdata; +#define NOWARN(option, comment, block) \ + __diag_push(); \ + __diag_ignore_all(#option, comment); \ + block \ + __diag_pop(); + +KSTM_MODULE_GLOBALS(); + static char *test_buffer __initdata; static char *alloced_buffer __initdata; +extern bool no_hash_pointers; + static int __printf(4, 0) __init do_test(int bufsize, const char *expect, int elen, const char *fmt, va_list ap) @@ -76,12 +84,17 @@ do_test(int bufsize, const char *expect, int elen, return 1; } - if (memchr_inv(test_buffer + written + 1, FILL_CHAR, BUF_SIZE + PAD_SIZE - (written + 1))) { + if (memchr_inv(test_buffer + written + 1, FILL_CHAR, bufsize - (written + 1))) { pr_warn("vsnprintf(buf, %d, \"%s\", ...) wrote beyond the nul-terminator\n", bufsize, fmt); return 1; } + if (memchr_inv(test_buffer + bufsize, FILL_CHAR, BUF_SIZE + PAD_SIZE - bufsize)) { + pr_warn("vsnprintf(buf, %d, \"%s\", ...) wrote beyond buffer\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); @@ -152,9 +165,11 @@ 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); + NOWARN(-Wformat, "Intentionally test narrowing conversion specifiers.", { + 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 @@ -214,6 +229,7 @@ test_string(void) #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) @@ -245,6 +261,7 @@ plain_format(void) #define PTR_STR "456789ab" #define PTR_VAL_NO_CRNG "(ptrval)" #define ZEROS "" +#define ONES "" static int __init plain_format(void) @@ -299,6 +316,12 @@ plain(void) { int err; + if (no_hash_pointers) { + pr_warn("skipping plain 'p' tests"); + skipped_tests += 2; + return; + } + err = plain_hash(); if (err) { pr_warn("plain 'p' does not appear to be hashed\n"); @@ -330,14 +353,28 @@ test_hashed(const char *fmt, const void *p) test(buf, fmt, p); } +/* + * NULL pointers aren't hashed. + */ static void __init null_pointer(void) { - test_hashed("%p", NULL); + 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 @@ -478,7 +515,7 @@ struct_va_format(void) } static void __init -struct_rtc_time(void) +time_and_date(void) { /* 1543210543 */ const struct rtc_time tm = { @@ -489,14 +526,26 @@ struct_rtc_time(void) .tm_mon = 10, .tm_year = 118, }; + /* 2019-01-04T15:32:23 */ + time64_t t = 1546615943; - test("(%ptR?)", "%pt", &tm); + 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); + + test("2019-01-04 15:32:23", "%ptTs", &t); + test("0119-00-04 15:32:23", "%ptTsr", &t); + test("15:32:23|2019-01-04", "%ptTts|%ptTds", &t, &t); + test("15:32:23|0119-00-04", "%ptTtrs|%ptTdrs", &t, &t); } static void __init @@ -546,28 +595,90 @@ netdev_features(void) { } +struct page_flags_test { + int width; + int shift; + int mask; + const char *fmt; + const char *name; +}; + +static const struct page_flags_test pft[] = { + {SECTIONS_WIDTH, SECTIONS_PGSHIFT, SECTIONS_MASK, + "%d", "section"}, + {NODES_WIDTH, NODES_PGSHIFT, NODES_MASK, + "%d", "node"}, + {ZONES_WIDTH, ZONES_PGSHIFT, ZONES_MASK, + "%d", "zone"}, + {LAST_CPUPID_WIDTH, LAST_CPUPID_PGSHIFT, LAST_CPUPID_MASK, + "%#x", "lastcpupid"}, + {KASAN_TAG_WIDTH, KASAN_TAG_PGSHIFT, KASAN_TAG_MASK, + "%#x", "kasantag"}, +}; + +static void __init +page_flags_test(int section, int node, int zone, int last_cpupid, + int kasan_tag, unsigned long flags, const char *name, + char *cmp_buf) +{ + unsigned long values[] = {section, node, zone, last_cpupid, kasan_tag}; + unsigned long size; + bool append = false; + int i; + + for (i = 0; i < ARRAY_SIZE(values); i++) + flags |= (values[i] & pft[i].mask) << pft[i].shift; + + size = scnprintf(cmp_buf, BUF_SIZE, "%#lx(", flags); + if (flags & PAGEFLAGS_MASK) { + size += scnprintf(cmp_buf + size, BUF_SIZE - size, "%s", name); + append = true; + } + + for (i = 0; i < ARRAY_SIZE(pft); i++) { + if (!pft[i].width) + continue; + + if (append) + size += scnprintf(cmp_buf + size, BUF_SIZE - size, "|"); + + size += scnprintf(cmp_buf + size, BUF_SIZE - size, "%s=", + pft[i].name); + size += scnprintf(cmp_buf + size, BUF_SIZE - size, pft[i].fmt, + values[i] & pft[i].mask); + append = true; + } + + snprintf(cmp_buf + size, BUF_SIZE - size, ")"); + + test(cmp_buf, "%pGp", &flags); +} + static void __init flags(void) { unsigned long flags; - gfp_t gfp; char *cmp_buffer; + gfp_t gfp; + + cmp_buffer = kmalloc(BUF_SIZE, GFP_KERNEL); + if (!cmp_buffer) + return; flags = 0; - test("", "%pGp", &flags); + page_flags_test(0, 0, 0, 0, 0, flags, "", cmp_buffer); - /* Page flags should filter the zone id */ flags = 1UL << NR_PAGEFLAGS; - test("", "%pGp", &flags); + page_flags_test(0, 0, 0, 0, 0, flags, "", cmp_buffer); flags |= 1UL << PG_uptodate | 1UL << PG_dirty | 1UL << PG_lru | 1UL << PG_active | 1UL << PG_swapbacked; - test("uptodate|dirty|lru|active|swapbacked", "%pGp", &flags); - + page_flags_test(1, 1, 1, 0x1fffff, 1, flags, + "uptodate|dirty|lru|active|swapbacked", + cmp_buffer); - flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC - | VM_DENYWRITE; - test("read|exec|mayread|maywrite|mayexec|denywrite", "%pGv", &flags); + flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC; + test("read|exec|mayread|maywrite|mayexec", "%pGv", &flags); gfp = GFP_TRANSHUGE; test("GFP_TRANSHUGE", "%pGg", &gfp); @@ -578,10 +689,6 @@ flags(void) 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); @@ -624,6 +731,23 @@ static void __init fwnode_pointer(void) software_node_unregister_nodes(softnodes); } +static void __init fourcc_pointer(void) +{ + struct { + u32 code; + char *str; + } const try[] = { + { 0x3231564e, "NV12 little-endian (0x3231564e)", }, + { 0xb231564e, "NV12 big-endian (0xb231564e)", }, + { 0x10111213, ".... little-endian (0x10111213)", }, + { 0x20303159, "Y10 little-endian (0x20303159)", }, + }; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(try); i++) + test(try[i].str, "%p4cc", &try[i].code); +} + static void __init errptr(void) { @@ -649,6 +773,7 @@ test_pointer(void) { plain(); null_pointer(); + error_pointer(); invalid_pointer(); symbol_ptr(); kernel_ptr(); @@ -661,13 +786,14 @@ test_pointer(void) uuid(); dentry(); struct_va_format(); - struct_rtc_time(); + time_and_date(); struct_clk(); bitmap(); netdev_features(); flags(); errptr(); fwnode_pointer(); + fourcc_pointer(); } static void __init selftest(void) |