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authorKees Cook <keescook@chromium.org>2018-05-09 22:13:28 -0700
committerKees Cook <keescook@chromium.org>2018-06-05 12:16:51 -0700
commit8fee81aa4598484c073c845281a25d94fb204cf6 (patch)
treec189f5708a63ae3109eb62276ca5baa3f94c0457 /lib/test_overflow.c
parent6d3344324b5ae49fc8cb599a2c687e5607ba6e9f (diff)
downloadlinux-8fee81aa4598484c073c845281a25d94fb204cf6.tar.bz2
test_overflow: Report test failures
This adjusts the overflow test to report failures, and prepares to add allocation tests. Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'lib/test_overflow.c')
-rw-r--r--lib/test_overflow.c54
1 files changed, 39 insertions, 15 deletions
diff --git a/lib/test_overflow.c b/lib/test_overflow.c
index fa87e283b149..501ed86205c4 100644
--- a/lib/test_overflow.c
+++ b/lib/test_overflow.c
@@ -220,30 +220,38 @@ DEFINE_TEST_ARRAY(s64) = {
pr_warn("expected "fmt" "sym" "fmt \
" to%s overflow (type %s)\n", \
a, b, of ? "" : " not", #t); \
+ err = 1; \
} \
if (_r != r) { \
pr_warn("expected "fmt" "sym" "fmt" == " \
fmt", got "fmt" (type %s)\n", \
a, b, r, _r, #t); \
+ err = 1; \
} \
} while (0)
#define DEFINE_TEST_FUNC(t, fmt) \
-static void __init do_test_ ## t(const struct test_ ## t *p) \
+static int __init do_test_ ## t(const struct test_ ## t *p) \
{ \
+ int err = 0; \
+ \
check_one_op(t, fmt, add, "+", p->a, p->b, p->sum, p->s_of); \
check_one_op(t, fmt, add, "+", p->b, p->a, p->sum, p->s_of); \
check_one_op(t, fmt, sub, "-", p->a, p->b, p->diff, p->d_of); \
check_one_op(t, fmt, mul, "*", p->a, p->b, p->prod, p->p_of); \
check_one_op(t, fmt, mul, "*", p->b, p->a, p->prod, p->p_of); \
+ \
+ return err; \
} \
\
-static void __init test_ ## t ## _overflow(void) { \
+static int __init test_ ## t ## _overflow(void) { \
+ int err = 0; \
unsigned i; \
\
pr_info("%-3s: %zu tests\n", #t, ARRAY_SIZE(t ## _tests)); \
for (i = 0; i < ARRAY_SIZE(t ## _tests); ++i) \
- do_test_ ## t(&t ## _tests[i]); \
+ err |= do_test_ ## t(&t ## _tests[i]); \
+ return err; \
}
DEFINE_TEST_FUNC(u8, "%d");
@@ -257,27 +265,43 @@ DEFINE_TEST_FUNC(u64, "%llu");
DEFINE_TEST_FUNC(s64, "%lld");
#endif
-static int __init test_overflow(void)
+static int __init test_overflow_calculation(void)
{
- test_u8_overflow();
- test_s8_overflow();
- test_u16_overflow();
- test_s16_overflow();
- test_u32_overflow();
- test_s32_overflow();
+ int err = 0;
+
+ err |= test_u8_overflow();
+ err |= test_s8_overflow();
+ err |= test_u16_overflow();
+ err |= test_s16_overflow();
+ err |= test_u32_overflow();
+ err |= test_s32_overflow();
#if BITS_PER_LONG == 64
- test_u64_overflow();
- test_s64_overflow();
+ err |= test_u64_overflow();
+ err |= test_s64_overflow();
#endif
- pr_info("done\n");
+ return err;
+}
+
+static int __init test_module_init(void)
+{
+ int err = 0;
+
+ err |= test_overflow_calculation();
+
+ if (err) {
+ pr_warn("FAIL!\n");
+ err = -EINVAL;
+ } else {
+ pr_info("all tests passed\n");
+ }
- return 0;
+ return err;
}
static void __exit test_module_exit(void)
{ }
-module_init(test_overflow);
+module_init(test_module_init);
module_exit(test_module_exit);
MODULE_LICENSE("Dual MIT/GPL");