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Introduce CONFIG_STACKLEAK_RUNTIME_DISABLE option, which provides 'stack_erasing' sysctl. It can be used in runtime to control kernel stack erasing for kernels built with CONFIG_GCC_PLUGIN_STACKLEAK. Suggested-by: Ingo Molnar <[email protected]> Signed-off-by: Alexander Popov <[email protected]> Tested-by: Laura Abbott <[email protected]> Signed-off-by: Kees Cook <[email protected]>