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kunit: Add tests for fault

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Add a test case to check NULL pointer dereference and make sure it would
result as a failed test.

The full kunit_fault test suite is marked as skipped when run on UML
because it would result to a kernel panic.

Tested with:
./tools/testing/kunit/kunit.py run --arch x86_64 kunit_fault
./tools/testing/kunit/kunit.py run --arch arm64 \
  --cross_compile=aarch64-linux-gnu- kunit_fault

Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: Rae Moar <rmoar@google.com>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Link: https://lore.kernel.org/r/20240408074625.65017-8-mic@digikod.net
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Mickaël Salaün 2024-04-08 09:46:25 +02:00 committed by Shuah Khan
parent 8bd5d74bab
commit 170c31737c
1 changed files with 44 additions and 1 deletions
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45
lib/kunit/kunit-test.c
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@ -109,6 +109,48 @@ static struct kunit_suite kunit_try_catch_test_suite = {
.test_cases = kunit_try_catch_test_cases,
};
#ifndef CONFIG_UML
static void kunit_test_null_dereference(void *data)
{
struct kunit *test = data;
int *null = NULL;
*null = 0;
KUNIT_FAIL(test, "This line should never be reached\n");
}
static void kunit_test_fault_null_dereference(struct kunit *test)
{
struct kunit_try_catch_test_context *ctx = test->priv;
struct kunit_try_catch *try_catch = ctx->try_catch;
kunit_try_catch_init(try_catch,
test,
kunit_test_null_dereference,
kunit_test_catch);
kunit_try_catch_run(try_catch, test);
KUNIT_EXPECT_EQ(test, try_catch->try_result, -EINTR);
KUNIT_EXPECT_TRUE(test, ctx->function_called);
}
#endif /* !CONFIG_UML */
static struct kunit_case kunit_fault_test_cases[] = {
#ifndef CONFIG_UML
KUNIT_CASE(kunit_test_fault_null_dereference),
#endif /* !CONFIG_UML */
{}
};
static struct kunit_suite kunit_fault_test_suite = {
.name = "kunit_fault",
.init = kunit_try_catch_test_init,
.test_cases = kunit_fault_test_cases,
};
/*
* Context for testing test managed resources
* is_resource_initialized is used to test arbitrary resources
@ -826,6 +868,7 @@ static struct kunit_suite kunit_current_test_suite = {
kunit_test_suites(&kunit_try_catch_test_suite, &kunit_resource_test_suite,
&kunit_log_test_suite, &kunit_status_test_suite,
&kunit_current_test_suite, &kunit_device_test_suite);
&kunit_current_test_suite, &kunit_device_test_suite,
&kunit_fault_test_suite);
MODULE_LICENSE("GPL v2");