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lib: add more string to 64-bit integer conversion overflow tests

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Add a few more string to 64-bit integer conversion tests to check whether
'kstrtoull()', 'kstrtoll()', 'kstrtou64()' and 'kstrtos64()' can handle
overflows reported by '_parse_integer_limit()'.

Link: https://lore.kernel.org/20260519172259.908980-4-dmantipov@yandex.ru
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Suggested-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Charlie Jenkins <thecharlesjenkins@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Dmitry Antipov
2026-05-19 20:22:54 +03:00
committed by Andrew Morton
parent 9a4580db6e
commit ab90fc1007
1 changed files with 6 additions and 0 deletions
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6
lib/test-kstrtox.c
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@@ -198,6 +198,7 @@ static void __init test_kstrtoull_fail(void)
{"10000000000000000000000000000000000000000000000000000000000000000", 2},
{"2000000000000000000000", 8},
{"18446744073709551616", 10},
{"569202370375329612767", 10},
{"10000000000000000", 16},
/* negative */
{"-0", 0},
@@ -275,9 +276,11 @@ static void __init test_kstrtoll_fail(void)
{"9223372036854775809", 10},
{"18446744073709551614", 10},
{"18446744073709551615", 10},
{"569202370375329612767", 10},
{"-9223372036854775809", 10},
{"-18446744073709551614", 10},
{"-18446744073709551615", 10},
{"-569202370375329612767", 10},
/* sign is first character if any */
{"-+1", 0},
{"-+1", 8},
@@ -334,6 +337,7 @@ static void __init test_kstrtou64_fail(void)
{"-1", 10},
{"18446744073709551616", 10},
{"18446744073709551617", 10},
{"569202370375329612767", 10},
};
TEST_FAIL(kstrtou64, u64, "%llu", test_u64_fail);
}
@@ -386,6 +390,8 @@ static void __init test_kstrtos64_fail(void)
{"18446744073709551615", 10},
{"18446744073709551616", 10},
{"18446744073709551617", 10},
{"569202370375329612767", 10},
{"-569202370375329612767", 10},
};
TEST_FAIL(kstrtos64, s64, "%lld", test_s64_fail);
}