Re: [PATCH 10/17] lkdtm: use __va_function

Kees Cook
2021-03-12T02:46:38Z

On Thu, Mar 11, 2021 at 04:49:12PM -0800, Sami Tolvanen wrote:
> To ensure we take the actual address of a function in kernel text, use
> __va_function. Otherwise, with CONFIG_CFI_CLANG, the compiler replaces
> the address with a pointer to the CFI jump table, which is actually in
> the module when compiled with CONFIG_LKDTM=m.
>
> Signed-off-by: Sami Tolvanen <samitolvanen@google.com>

Acked-by: Kees Cook <keescook@chromium.org>

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Kees Cook