-
Sami Tolvanen authored
With CONFIG_CFI_CLANG, the compiler replaces function address references with the address of the function's CFI jump table entry. This means that __pa_symbol(function) returns the physical address of the jump table entry, which can lead to address space confusion as the jump table points to the function's virtual address. Therefore, use the function_nocfi() macro to ensure we are always taking the address of the actual function instead. Signed-off-by:
Sami Tolvanen <samitolvanen@google.com> Reviewed-by:
Kees Cook <keescook@chromium.org> Acked-by:
Mark Rutland <mark.rutland@arm.com> Tested-by:
Nathan Chancellor <nathan@kernel.org> Signed-off-by:
Sami Tolvanen authoredWith CONFIG_CFI_CLANG, the compiler replaces function address references with the address of the function's CFI jump table entry. This means that __pa_symbol(function) returns the physical address of the jump table entry, which can lead to address space confusion as the jump table points to the function's virtual address. Therefore, use the function_nocfi() macro to ensure we are always taking the address of the actual function instead. Signed-off-by:
Loading