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linux-kselftest-kunit-6.6-rc2

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This kunit update for Linux 6.6-rc2 consists of important fixes to
 possible memory leak, null-ptr-deref, wild-memory-access, and error
 path bugs.
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Merge tag 'linux-kselftest-kunit-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kunit fixes from Shuah Khan:
 "Fixes to possible memory leak, null-ptr-deref, wild-memory-access, and
  error path bugs"

* tag 'linux-kselftest-kunit-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  kunit: Fix possible memory leak in kunit_filter_suites()
  kunit: Fix possible null-ptr-deref in kunit_parse_glob_filter()
  kunit: Fix the wrong err path and add goto labels in kunit_filter_suites()
  kunit: Fix wild-memory-access bug in kunit_free_suite_set()
  kunit: test: Make filter strings in executor_test writable
This commit is contained in:
Linus Torvalds 2023-09-12 09:05:49 -07:00
commit fb52c87a06
3 changed files with 43 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
lib/kunit/executor.c
View File

@ -65,7 +65,7 @@ struct kunit_glob_filter {
};
/* Split "suite_glob.test_glob" into two. Assumes filter_glob is not empty. */
static void kunit_parse_glob_filter(struct kunit_glob_filter *parsed,
static int kunit_parse_glob_filter(struct kunit_glob_filter *parsed,
const char *filter_glob)
{
const int len = strlen(filter_glob);
@ -73,16 +73,28 @@ static void kunit_parse_glob_filter(struct kunit_glob_filter *parsed,
if (!period) {
parsed->suite_glob = kzalloc(len + 1, GFP_KERNEL);
if (!parsed->suite_glob)
return -ENOMEM;
parsed->test_glob = NULL;
strcpy(parsed->suite_glob, filter_glob);
return;
return 0;
}
parsed->suite_glob = kzalloc(period - filter_glob + 1, GFP_KERNEL);
if (!parsed->suite_glob)
return -ENOMEM;
parsed->test_glob = kzalloc(len - (period - filter_glob) + 1, GFP_KERNEL);
if (!parsed->test_glob) {
kfree(parsed->suite_glob);
return -ENOMEM;
}
strncpy(parsed->suite_glob, filter_glob, period - filter_glob);
strncpy(parsed->test_glob, period + 1, len - (period - filter_glob));
return 0;
}
/* Create a copy of suite with only tests that match test_glob. */
@ -152,21 +164,24 @@ kunit_filter_suites(const struct kunit_suite_set *suite_set,
}
copy_start = copy;
if (filter_glob)
kunit_parse_glob_filter(&parsed_glob, filter_glob);
if (filter_glob) {
*err = kunit_parse_glob_filter(&parsed_glob, filter_glob);
if (*err)
goto free_copy;
}
/* Parse attribute filters */
if (filters) {
filter_count = kunit_get_filter_count(filters);
parsed_filters = kcalloc(filter_count, sizeof(*parsed_filters), GFP_KERNEL);
if (!parsed_filters) {
kfree(copy);
return filtered;
*err = -ENOMEM;
goto free_parsed_glob;
}
for (j = 0; j < filter_count; j++)
parsed_filters[j] = kunit_next_attr_filter(&filters, err);
if (*err)
goto err;
goto free_parsed_filters;
}
for (i = 0; &suite_set->start[i] != suite_set->end; i++) {
@ -178,7 +193,7 @@ kunit_filter_suites(const struct kunit_suite_set *suite_set,
parsed_glob.test_glob);
if (IS_ERR(filtered_suite)) {
*err = PTR_ERR(filtered_suite);
goto err;
goto free_parsed_filters;
}
}
if (filter_count > 0 && parsed_filters != NULL) {
@ -195,10 +210,11 @@ kunit_filter_suites(const struct kunit_suite_set *suite_set,
filtered_suite = new_filtered_suite;
if (*err)
goto err;
goto free_parsed_filters;
if (IS_ERR(filtered_suite)) {
*err = PTR_ERR(filtered_suite);
goto err;
goto free_parsed_filters;
}
if (!filtered_suite)
break;
@ -213,17 +229,19 @@ kunit_filter_suites(const struct kunit_suite_set *suite_set,
filtered.start = copy_start;
filtered.end = copy;
err:
if (*err)
kfree(copy);
free_parsed_filters:
if (filter_count)
kfree(parsed_filters);
free_parsed_glob:
if (filter_glob) {
kfree(parsed_glob.suite_glob);
kfree(parsed_glob.test_glob);
}
if (filter_count)
kfree(parsed_filters);
free_copy:
if (*err)
kfree(copy);
return filtered;
}

13
lib/kunit/executor_test.c
View File

@ -119,7 +119,7 @@ static void parse_filter_attr_test(struct kunit *test)
{
int j, filter_count;
struct kunit_attr_filter *parsed_filters;
char *filters = "speed>slow, module!=example";
char filters[] = "speed>slow, module!=example", *filter = filters;
int err = 0;
filter_count = kunit_get_filter_count(filters);
@ -128,7 +128,7 @@ static void parse_filter_attr_test(struct kunit *test)
parsed_filters = kunit_kcalloc(test, filter_count, sizeof(*parsed_filters),
GFP_KERNEL);
for (j = 0; j < filter_count; j++) {
parsed_filters[j] = kunit_next_attr_filter(&filters, &err);
parsed_filters[j] = kunit_next_attr_filter(&filter, &err);
KUNIT_ASSERT_EQ_MSG(test, err, 0, "failed to parse filter '%s'", filters[j]);
}
@ -154,6 +154,7 @@ static void filter_attr_test(struct kunit *test)
.start = subsuite, .end = &subsuite[2],
};
struct kunit_suite_set got;
char filter[] = "speed>slow";
int err = 0;
subsuite[0] = alloc_fake_suite(test, "normal_suite", dummy_attr_test_cases);
@ -168,7 +169,7 @@ static void filter_attr_test(struct kunit *test)
* attribute is unset and thus, the filtering is based on the parent attribute
* of slow.
*/
got = kunit_filter_suites(&suite_set, NULL, "speed>slow", NULL, &err);
got = kunit_filter_suites(&suite_set, NULL, filter, NULL, &err);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, got.start);
KUNIT_ASSERT_EQ(test, err, 0);
kfree_at_end(test, got.start);
@ -191,12 +192,13 @@ static void filter_attr_empty_test(struct kunit *test)
.start = subsuite, .end = &subsuite[2],
};
struct kunit_suite_set got;
char filter[] = "module!=dummy";
int err = 0;
subsuite[0] = alloc_fake_suite(test, "suite1", dummy_attr_test_cases);
subsuite[1] = alloc_fake_suite(test, "suite2", dummy_attr_test_cases);
got = kunit_filter_suites(&suite_set, NULL, "module!=dummy", NULL, &err);
got = kunit_filter_suites(&suite_set, NULL, filter, NULL, &err);
KUNIT_ASSERT_EQ(test, err, 0);
kfree_at_end(test, got.start); /* just in case */
@ -211,12 +213,13 @@ static void filter_attr_skip_test(struct kunit *test)
.start = subsuite, .end = &subsuite[1],
};
struct kunit_suite_set got;
char filter[] = "speed>slow";
int err = 0;
subsuite[0] = alloc_fake_suite(test, "suite", dummy_attr_test_cases);
/* Want: suite(slow, normal), NULL -> suite(slow with SKIP, normal), NULL */
got = kunit_filter_suites(&suite_set, NULL, "speed>slow", "skip", &err);
got = kunit_filter_suites(&suite_set, NULL, filter, "skip", &err);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, got.start);
KUNIT_ASSERT_EQ(test, err, 0);
kfree_at_end(test, got.start);

3
lib/kunit/test.c
View File

@ -784,12 +784,13 @@ static int kunit_module_notify(struct notifier_block *nb, unsigned long val,
switch (val) {
case MODULE_STATE_LIVE:
kunit_module_init(mod);
break;
case MODULE_STATE_GOING:
kunit_module_exit(mod);
break;
case MODULE_STATE_COMING:
kunit_module_init(mod);
break;
case MODULE_STATE_UNFORMED:
break;
}