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kunit: fix uninitialized variables bug in attributes filtering

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Fix smatch warnings regarding uninitialized variables in the filtering
patch of the new KUnit Attributes feature.

Fixes: 529534e8cb ("kunit: Add ability to filter attributes")

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/202307270610.s0w4NKEn-lkp@intel.com/

Signed-off-by: Rae Moar <rmoar@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Rae Moar
2023-08-03 19:36:35 +00:00
committed by Shuah Khan
parent abbf73816b
commit 1c9fd080df
3 changed files with 29 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/kunit/attributes.c
+17 -23
View File
@@ -102,7 +102,7 @@ static int int_filter(long val, const char *op, int input, int *err)
static int attr_enum_filter(void *attr, const char *input, int *err,
const char * const str_list[], int max)
{
int i, j, input_int;
int i, j, input_int = -1;
long test_val = (long)attr;
const char *input_val = NULL;
@@ -124,7 +124,7 @@ static int attr_enum_filter(void *attr, const char *input, int *err,
input_int = j;
}
if (!input_int) {
if (input_int < 0) {
*err = -EINVAL;
pr_err("kunit executor: invalid filter input: %s\n", input);
return false;
@@ -186,8 +186,10 @@ static void *attr_module_get(void *test_or_suite, bool is_test)
// Suites get their module attribute from their first test_case
if (test)
return ((void *) test->module_name);
else
else if (kunit_suite_num_test_cases(suite) > 0)
return ((void *) suite->test_cases[0].module_name);
else
return (void *) "";
}
/* List of all Test Attributes */
@@ -221,7 +223,7 @@ const char *kunit_attr_filter_name(struct kunit_attr_filter filter)
void kunit_print_attr(void *test_or_suite, bool is_test, unsigned int test_level)
{
int i;
bool to_free;
bool to_free = false;
void *attr;
const char *attr_name, *attr_str;
struct kunit_suite *suite = is_test ? NULL : test_or_suite;
@@ -255,7 +257,7 @@ void kunit_print_attr(void *test_or_suite, bool is_test, unsigned int test_level
int kunit_get_filter_count(char *input)
{
int i, comma_index, count = 0;
int i, comma_index = 0, count = 0;
for (i = 0; input[i]; i++) {
if (input[i] == ',') {
@@ -272,7 +274,7 @@ int kunit_get_filter_count(char *input)
struct kunit_attr_filter kunit_next_attr_filter(char **filters, int *err)
{
struct kunit_attr_filter filter = {};
int i, j, comma_index, new_start_index;
int i, j, comma_index = 0, new_start_index = 0;
int op_index = -1, attr_index = -1;
char op;
char *input = *filters;
@@ -316,7 +318,7 @@ struct kunit_attr_filter kunit_next_attr_filter(char **filters, int *err)
filter.attr = &kunit_attr_list[attr_index];
}
if (comma_index) {
if (comma_index > 0) {
input[comma_index] = '\0';
filter.input = input + op_index;
input = input + new_start_index;
@@ -356,31 +358,22 @@ struct kunit_suite *kunit_filter_attr_tests(const struct kunit_suite *const suit
/* Save filtering result on default value */
default_result = filter.attr->filter(filter.attr->attr_default, filter.input, err);
if (*err) {
kfree(copy);
kfree(filtered);
return NULL;
}
if (*err)
goto err;
/* Save suite attribute value and filtering result on that value */
suite_val = filter.attr->get_attr((void *)suite, false);
suite_result = filter.attr->filter(suite_val, filter.input, err);
if (*err) {
kfree(copy);
kfree(filtered);
return NULL;
}
if (*err)
goto err;
/* For each test case, save test case if passes filtering. */
kunit_suite_for_each_test_case(suite, test_case) {
test_val = filter.attr->get_attr((void *) test_case, true);
test_result = filter.attr->filter(filter.attr->get_attr(test_case, true),
filter.input, err);
if (*err) {
kfree(copy);
kfree(filtered);
return NULL;
}
if (*err)
goto err;
/*
* If attribute value of test case is set, filter on that value.
@@ -406,7 +399,8 @@ struct kunit_suite *kunit_filter_attr_tests(const struct kunit_suite *const suit
}
}
if (n == 0) {
err:
if (n == 0 || *err) {
kfree(copy);
kfree(filtered);
return NULL;