From: Arnd Bergmann <a...@arndb.de> With -Wmissing-prototypes enabled, the stackleak code produces a couple of warnings that have no declarations because they are only called from assembler:
stackleak.c:127:25: error: no previous prototype for 'stackleak_erase' [-Werror=missing-prototypes] stackleak.c:139:25: error: no previous prototype for 'stackleak_erase_on_task_stack' [-Werror=missing-prototypes] stackleak.c:151:25: error: no previous prototype for 'stackleak_erase_off_task_stack' [-Werror=missing-prototypes] stackleak.c:159:49: error: no previous prototype for 'stackleak_track_stack' [-Werror=missing-prototypes] Add declarations to the stackleak header to shut up the warnings. Signed-off-by: Arnd Bergmann <a...@arndb.de> --- include/linux/stackleak.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/stackleak.h b/include/linux/stackleak.h index c36e7a3b45e7..3be2cb564710 100644 --- a/include/linux/stackleak.h +++ b/include/linux/stackleak.h @@ -14,6 +14,7 @@ #ifdef CONFIG_GCC_PLUGIN_STACKLEAK #include <asm/stacktrace.h> +#include <linux/linkage.h> /* * The lowest address on tsk's stack which we can plausibly erase. @@ -76,6 +77,11 @@ static inline void stackleak_task_init(struct task_struct *t) # endif } +asmlinkage void noinstr stackleak_erase(void); +asmlinkage void noinstr stackleak_erase_on_task_stack(void); +asmlinkage void noinstr stackleak_erase_off_task_stack(void); +void __no_caller_saved_registers noinstr stackleak_track_stack(void); + #else /* !CONFIG_GCC_PLUGIN_STACKLEAK */ static inline void stackleak_task_init(struct task_struct *t) { } #endif -- 2.39.2