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Diffstat (limited to 'Documentation/dev-tools/kasan.rst')
| -rw-r--r-- | Documentation/dev-tools/kasan.rst | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/Documentation/dev-tools/kasan.rst b/Documentation/dev-tools/kasan.rst index 703597a5c770..092773adbaf1 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 ~~~~~~~~~~~~~ |