From 9370bb92b2d16684ee45cf24e879c93c509162da Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Thu, 19 Dec 2024 01:47:39 +0000
Subject: [PATCH] add wifi6 8852be driver
---
kernel/lib/test_ubsan.c | 110 ++++++++++++++++++++++++------------------------------
1 files changed, 49 insertions(+), 61 deletions(-)
diff --git a/kernel/lib/test_ubsan.c b/kernel/lib/test_ubsan.c
index 280f497..5d98d98 100644
--- a/kernel/lib/test_ubsan.c
+++ b/kernel/lib/test_ubsan.c
@@ -5,79 +5,78 @@
typedef void(*test_ubsan_fp)(void);
-static void test_ubsan_add_overflow(void)
-{
- volatile int val = INT_MAX;
-
- val += 2;
-}
-
-static void test_ubsan_sub_overflow(void)
-{
- volatile int val = INT_MIN;
- volatile int val2 = 2;
-
- val -= val2;
-}
-
-static void test_ubsan_mul_overflow(void)
-{
- volatile int val = INT_MAX / 2;
-
- val *= 3;
-}
-
-static void test_ubsan_negate_overflow(void)
-{
- volatile int val = INT_MIN;
-
- val = -val;
-}
+#define UBSAN_TEST(config, ...) do { \
+ pr_info("%s " __VA_ARGS__ "%s(%s=%s)\n", __func__, \
+ sizeof(" " __VA_ARGS__) > 2 ? " " : "", \
+ #config, IS_ENABLED(config) ? "y" : "n"); \
+ } while (0)
static void test_ubsan_divrem_overflow(void)
{
volatile int val = 16;
volatile int val2 = 0;
+ UBSAN_TEST(CONFIG_UBSAN_DIV_ZERO);
val /= val2;
-}
-
-static void test_ubsan_vla_bound_not_positive(void)
-{
- volatile int size = -1;
- char buf[size];
-
- (void)buf;
}
static void test_ubsan_shift_out_of_bounds(void)
{
- volatile int val = -1;
- int val2 = 10;
+ volatile int neg = -1, wrap = 4;
+ int val1 = 10;
+ int val2 = INT_MAX;
- val2 <<= val;
+ UBSAN_TEST(CONFIG_UBSAN_SHIFT, "negative exponent");
+ val1 <<= neg;
+
+ UBSAN_TEST(CONFIG_UBSAN_SHIFT, "left overflow");
+ val2 <<= wrap;
}
static void test_ubsan_out_of_bounds(void)
{
- volatile int i = 4, j = 5;
- volatile int arr[i];
+ volatile int i = 4, j = 5, k = -1;
+ volatile char above[4] = { }; /* Protect surrounding memory. */
+ volatile int arr[4];
+ volatile char below[4] = { }; /* Protect surrounding memory. */
+ above[0] = below[0];
+
+ UBSAN_TEST(CONFIG_UBSAN_BOUNDS, "above");
arr[j] = i;
+
+ UBSAN_TEST(CONFIG_UBSAN_BOUNDS, "below");
+ arr[k] = i;
}
+
+enum ubsan_test_enum {
+ UBSAN_TEST_ZERO = 0,
+ UBSAN_TEST_ONE,
+ UBSAN_TEST_MAX,
+};
static void test_ubsan_load_invalid_value(void)
{
volatile char *dst, *src;
bool val, val2, *ptr;
- char c = 4;
+ enum ubsan_test_enum eval, eval2, *eptr;
+ unsigned char c = 0xff;
+ UBSAN_TEST(CONFIG_UBSAN_BOOL, "bool");
dst = (char *)&val;
src = &c;
*dst = *src;
ptr = &val2;
val2 = val;
+
+ UBSAN_TEST(CONFIG_UBSAN_ENUM, "enum");
+ dst = (char *)&eval;
+ src = &c;
+ *dst = *src;
+
+ eptr = &eval2;
+ eval2 = eval;
}
static void test_ubsan_null_ptr_deref(void)
@@ -85,6 +84,7 @@
volatile int *ptr = NULL;
int val;
+ UBSAN_TEST(CONFIG_UBSAN_OBJECT_SIZE);
val = *ptr;
}
@@ -93,33 +93,22 @@
volatile char arr[5] __aligned(4) = {1, 2, 3, 4, 5};
volatile int *ptr, val = 6;
+ UBSAN_TEST(CONFIG_UBSAN_ALIGNMENT);
ptr = (int *)(arr + 1);
*ptr = val;
}
-static void test_ubsan_object_size_mismatch(void)
-{
- /* "((aligned(8)))" helps this not into be misaligned for ptr-access. */
- volatile int val __aligned(8) = 4;
- volatile long long *ptr, val2;
-
- ptr = (long long *)&val;
- val2 = *ptr;
-}
-
static const test_ubsan_fp test_ubsan_array[] = {
- test_ubsan_add_overflow,
- test_ubsan_sub_overflow,
- test_ubsan_mul_overflow,
- test_ubsan_negate_overflow,
- test_ubsan_divrem_overflow,
- test_ubsan_vla_bound_not_positive,
test_ubsan_shift_out_of_bounds,
test_ubsan_out_of_bounds,
test_ubsan_load_invalid_value,
- //test_ubsan_null_ptr_deref, /* exclude it because there is a crash */
test_ubsan_misaligned_access,
- test_ubsan_object_size_mismatch,
+};
+
+/* Excluded because they Oops the module. */
+static const test_ubsan_fp skip_ubsan_array[] = {
+ test_ubsan_divrem_overflow,
+ test_ubsan_null_ptr_deref,
};
static int __init test_ubsan_init(void)
@@ -129,7 +118,6 @@
for (i = 0; i < ARRAY_SIZE(test_ubsan_array); i++)
test_ubsan_array[i]();
- (void)test_ubsan_null_ptr_deref; /* to avoid unsed-function warning */
return 0;
}
module_init(test_ubsan_init);
--
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