Re: [PATCH v6 4/4] kasan: update documentation for generic kasan

[Dmitry Vyukov]

On Fri, May 22, 2020 at 4:02 AM Walter Wu <walter-zh.wu@xxxxxxxxxxxx> wrote:
>
> Generic KASAN will support to record the last two call_rcu() call stacks
> and print them in KASAN report. So that need to update documentation.

Reviewed-and-tested-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx>

> Signed-off-by: Walter Wu <walter-zh.wu@xxxxxxxxxxxx>
> Cc: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
> Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
> Cc: Alexander Potapenko <glider@xxxxxxxxxx>
> Cc: Jonathan Corbet <corbet@xxxxxxx>
> ---
>  Documentation/dev-tools/kasan.rst | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/Documentation/dev-tools/kasan.rst b/Documentation/dev-tools/kasan.rst
> index c652d740735d..fede42e6536b 100644
> --- a/Documentation/dev-tools/kasan.rst
> +++ b/Documentation/dev-tools/kasan.rst
> @@ -193,6 +193,9 @@ function calls GCC directly inserts the code to check the shadow memory.
>  This option significantly enlarges kernel but it gives x1.1-x2 performance
>  boost over outline instrumented kernel.
>
> +Generic KASAN prints up to 2 call_rcu() call stacks in reports, the last one
> +and the second to last.
> +
>  Software tag-based KASAN
>  ~~~~~~~~~~~~~~~~~~~~~~~~
>
> --
> 2.18.0
>
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