From ececdc021ba8f48ce87f476dd412e2ed50f9cd8e Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 8 Feb 2016 15:34:21 +0100 Subject: [PATCH] lkdtm: mark execute_location as noinline The kernel sometimes fails to link when lkdrm is built-in and compiled with clang: relocation truncated to fit: R_ARM_THM_CALL against `.bss' The reason here is that a relocation from .text to .bss fails to generate a trampoline because .bss is not an executable section. Marking the function 'noinline' turns the relative branch to .bss into an absolute branch to the function argument, and that works fine. Signed-off-by: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman --- drivers/misc/lkdtm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/misc/lkdtm.c b/drivers/misc/lkdtm.c index 11fdadc..5c1351b 100644 --- a/drivers/misc/lkdtm.c +++ b/drivers/misc/lkdtm.c @@ -335,7 +335,7 @@ static noinline void corrupt_stack(void) memset((void *)data, 0, 64); } -static void execute_location(void *dst) +static void noinline execute_location(void *dst) { void (*func)(void) = dst; -- 2.7.4