Update the "Tests" section in KASAN documentation:
- Add an introductory sentence.
- Add proper indentation for the list of ways to run KUnit tests.
- Punctuation, readability, and other minor clean-ups.
Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
---
Documentation/dev-tools/kasan.rst | 33 +++++++++++++++----------------
1 file changed, 16 insertions(+), 17 deletions(-)
diff --git a/Documentation/dev-tools/kasan.rst b/Documentation/dev-tools/kasan.rst
index 6628b133c9ad..c4a3c8a9fe71 100644
--- a/Documentation/dev-tools/kasan.rst
+++ b/Documentation/dev-tools/kasan.rst
@@ -398,19 +398,20 @@ To disable KASAN reports in a certain part of the kernel code:
Tests
~~~~~
-KASAN tests consist of two parts:
+There are KASAN tests that allow verifying that KASAN works and can detect
+certain types of memory corruptions. The tests consist of two parts:
1. Tests that are integrated with the KUnit Test Framework. Enabled with
``CONFIG_KASAN_KUNIT_TEST``. These tests can be run and partially verified
-automatically in a few different ways, see the instructions below.
+automatically in a few different ways; see the instructions below.
2. Tests that are currently incompatible with KUnit. Enabled with
``CONFIG_KASAN_MODULE_TEST`` and can only be run as a module. These tests can
-only be verified manually, by loading the kernel module and inspecting the
+only be verified manually by loading the kernel module and inspecting the
kernel log for KASAN reports.
-Each KUnit-compatible KASAN test prints a KASAN report if an error is detected.
-Then the test prints its number and status.
+Each KUnit-compatible KASAN test prints one of multiple KASAN reports if an
+error is detected. Then the test prints its number and status.
When a test passes::
@@ -438,27 +439,25 @@ Or, if one of the tests failed::
not ok 1 - kasan
-
There are a few ways to run KUnit-compatible KASAN tests.
1. Loadable module
-With ``CONFIG_KUNIT`` enabled, ``CONFIG_KASAN_KUNIT_TEST`` can be built as
-a loadable module and run on any architecture that supports KASAN by loading
-the module with insmod or modprobe. The module is called ``test_kasan``.
+ With ``CONFIG_KUNIT`` enabled, KASAN-KUnit tests can be built as a loadable
+ module and run by loading the `test_kasan.ko`` with ``insmod`` or
+ ``modprobe``.
2. Built-In
-With ``CONFIG_KUNIT`` built-in, ``CONFIG_KASAN_KUNIT_TEST`` can be built-in
-on any architecure that supports KASAN. These and any other KUnit tests enabled
-will run and print the results at boot as a late-init call.
+ With ``CONFIG_KUNIT`` built-in, KASAN-KUnit tests can be built-in as well.
+ In this case, the tests will run at boot as a late-init call.
3. Using kunit_tool
-With ``CONFIG_KUNIT`` and ``CONFIG_KASAN_KUNIT_TEST`` built-in, it's also
-possible use ``kunit_tool`` to see the results of these and other KUnit tests
-in a more readable way. This will not print the KASAN reports of the tests that
-passed. Use `KUnit documentation <https://www.kernel.org/doc/html/latest/dev-tools/kunit/index.html>`_
-for more up-to-date information on ``kunit_tool``.
+ With ``CONFIG_KUNIT`` and ``CONFIG_KASAN_KUNIT_TEST`` built-in, it is also
+ possible to use ``kunit_tool`` to see the results of KUnit tests in a more
+ readable way. This will not print the KASAN reports of the tests that passed.
+ See `KUnit documentation <https://www.kernel.org/doc/html/latest/dev-tools/kunit/index.html>`_
+ for more up-to-date information on ``kunit_tool``.
.. _KUnit: https://www.kernel.org/doc/html/latest/dev-tools/kunit/index.html
--
2.31.0.rc2.261.g7f71774620-goog
