Messages in this thread | | | Date | Wed, 13 Oct 2021 12:03:23 -0700 | From | Kees Cook <> | Subject | Re: [PATCH v5 05/15] tracepoint: Exclude tp_stub_func from CFI checking |
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On Wed, Oct 13, 2021 at 11:16:48AM -0700, Sami Tolvanen wrote: > If allocate_probes fails, func_remove replaces the old function > with a pointer to tp_stub_func, which is called using a mismatching > function pointer that will always trip indirect call checks with > CONFIG_CFI_CLANG. Use DEFINE_CFI_IMMEDATE_RETURN_STUB to define > tp_stub_func to allow it to pass CFI checking. > > Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
-- Kees Cook
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