diff options
Diffstat (limited to 'arch/sh/kernel/return_address.c')
| -rw-r--r-- | arch/sh/kernel/return_address.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/sh/kernel/return_address.c b/arch/sh/kernel/return_address.c index df3ab581107..5124aeb28c3 100644 --- a/arch/sh/kernel/return_address.c +++ b/arch/sh/kernel/return_address.c @@ -9,6 +9,7 @@ * for more details. */ #include <linux/kernel.h> +#include <linux/module.h> #include <asm/dwarf.h> #ifdef CONFIG_DWARF_UNWINDER @@ -23,6 +24,8 @@ void *return_address(unsigned int depth) struct dwarf_frame *tmp; tmp = dwarf_unwind_stack(ra, frame); + if (!tmp) + return NULL; if (frame) dwarf_free_frame(frame); @@ -52,3 +55,5 @@ void *return_address(unsigned int depth) } #endif + +EXPORT_SYMBOL_GPL(return_address); |