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From: Andrey Konovalov <andreyknvl@google.com>
To: Andrew Morton <akpm@linux-foundation.org>,
	Alexander Potapenko <glider@google.com>,
	 Marco Elver <elver@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>,
	Dmitry Vyukov <dvyukov@google.com>,
	 kasan-dev@googlegroups.com, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org,
	 Andrey Konovalov <andreyknvl@google.com>
Subject: [PATCH 03/11] kasan: docs: update usage section
Date: Thu, 11 Mar 2021 22:37:15 +0100	[thread overview]
Message-ID: <ffe645426d4d9f6de97dcacebb2ff698cfa47a43.1615498565.git.andreyknvl@google.com> (raw)
In-Reply-To: <f6efb2f36fc1f40eb22df027e6bc956cac71745e.1615498565.git.andreyknvl@google.com>

Update the "Usage" section in KASAN documentation:

- Add inline code snippet markers.
- Reword the part about stack traces for clarity.
- Other minor clean-ups.

Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
---
 Documentation/dev-tools/kasan.rst | 23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/Documentation/dev-tools/kasan.rst b/Documentation/dev-tools/kasan.rst
index 343a683d0520..f21c0cbebcb3 100644
--- a/Documentation/dev-tools/kasan.rst
+++ b/Documentation/dev-tools/kasan.rst
@@ -41,22 +41,21 @@ and riscv architectures, and tag-based KASAN modes are supported only for arm64.
 Usage
 -----
 
-To enable KASAN configure kernel with::
+To enable KASAN, configure the kernel with::
 
-	  CONFIG_KASAN = y
+	  CONFIG_KASAN=y
 
-and choose between CONFIG_KASAN_GENERIC (to enable generic KASAN),
-CONFIG_KASAN_SW_TAGS (to enable software tag-based KASAN), and
-CONFIG_KASAN_HW_TAGS (to enable hardware tag-based KASAN).
+and choose between ``CONFIG_KASAN_GENERIC`` (to enable generic KASAN),
+``CONFIG_KASAN_SW_TAGS`` (to enable software tag-based KASAN), and
+``CONFIG_KASAN_HW_TAGS`` (to enable hardware tag-based KASAN).
 
-For software modes, you also need to choose between CONFIG_KASAN_OUTLINE and
-CONFIG_KASAN_INLINE. Outline and inline are compiler instrumentation types.
-The former produces smaller binary while the latter is 1.1 - 2 times faster.
+For software modes, also choose between ``CONFIG_KASAN_OUTLINE`` and
+``CONFIG_KASAN_INLINE``. Outline and inline are compiler instrumentation types.
+The former produces a smaller binary while the latter is 1.1-2 times faster.
 
-For better error reports that include stack traces, enable CONFIG_STACKTRACE.
-
-To augment reports with last allocation and freeing stack of the physical page,
-it is recommended to enable also CONFIG_PAGE_OWNER and boot with page_owner=on.
+To include alloc and free stack traces of affected slab objects into reports,
+enable ``CONFIG_STACKTRACE``. To include alloc and free stack traces of affected
+physical pages, enable ``CONFIG_PAGE_OWNER`` and boot with ``page_owner=on``.
 
 Error reports
 ~~~~~~~~~~~~~
-- 
2.31.0.rc2.261.g7f71774620-goog



  parent reply	other threads:[~2021-03-11 21:37 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-11 21:37 [PATCH 01/11] kasan: docs: clean up sections Andrey Konovalov
2021-03-11 21:37 ` [PATCH 02/11] kasan: docs: update overview section Andrey Konovalov
2021-03-12 10:17   ` Marco Elver
2021-03-12 13:51     ` Andrey Konovalov
2021-03-11 21:37 ` Andrey Konovalov [this message]
2021-03-11 21:37 ` [PATCH 04/11] kasan: docs: update error reports section Andrey Konovalov
2021-03-11 21:37 ` [PATCH 05/11] kasan: docs: update boot parameters section Andrey Konovalov
2021-03-11 21:37 ` [PATCH 06/11] kasan: docs: update GENERIC implementation details section Andrey Konovalov
2021-03-11 21:37 ` [PATCH 07/11] kasan: docs: update SW_TAGS " Andrey Konovalov
2021-03-11 21:37 ` [PATCH 08/11] kasan: docs: update HW_TAGS " Andrey Konovalov
2021-03-11 21:37 ` [PATCH 09/11] kasan: docs: update shadow memory section Andrey Konovalov
2021-03-12 10:52   ` Marco Elver
2021-03-12 13:52     ` Andrey Konovalov
2021-03-11 21:37 ` [PATCH 10/11] kasan: docs: update ignoring accesses section Andrey Konovalov
2021-03-12 11:02   ` Marco Elver
2021-03-12 14:07     ` Andrey Konovalov
2021-03-11 21:37 ` [PATCH 11/11] kasan: docs: update tests section Andrey Konovalov
2021-03-12 10:47   ` Marco Elver
2021-03-12 13:53     ` Andrey Konovalov

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