diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 47017975fc2b..fc4e81dafca7 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -200,6 +200,7 @@ config PPC
 	select HAVE_ARCH_KCSAN            	if PPC_BOOK3S_64
 	select HAVE_ARCH_KFENCE			if ARCH_SUPPORTS_DEBUG_PAGEALLOC
 	select HAVE_ARCH_RANDOMIZE_KSTACK_OFFSET
+	select HAVE_ARCH_WITHIN_STACK_FRAMES
 	select HAVE_ARCH_KGDB
 	select HAVE_ARCH_MMAP_RND_BITS
 	select HAVE_ARCH_MMAP_RND_COMPAT_BITS	if COMPAT
diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h
index d2f44612f4b0..1f1a64b780e3 100644
--- a/arch/powerpc/include/asm/ppc_asm.h
+++ b/arch/powerpc/include/asm/ppc_asm.h
@@ -837,4 +837,12 @@ END_FTR_SECTION_NESTED(CPU_FTR_CELL_TB_BUG, CPU_FTR_CELL_TB_BUG, 96)
 #define BTB_FLUSH(reg)
 #endif /* CONFIG_PPC_E500 */
 
+#if defined(CONFIG_PPC64_ELF_ABI_V1)
+#define STACK_FRAME_PARAMS 48
+#elif defined(CONFIG_PPC64_ELF_ABI_V2)
+#define STACK_FRAME_PARAMS 32
+#elif defined(CONFIG_PPC32)
+#define STACK_FRAME_PARAMS 8
+#endif
+
 #endif /* _ASM_POWERPC_PPC_ASM_H */
diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h
index af58f1ed3952..cf13d84c4eb9 100644
--- a/arch/powerpc/include/asm/thread_info.h
+++ b/arch/powerpc/include/asm/thread_info.h
@@ -45,6 +45,7 @@
 #include <linux/cache.h>
 #include <asm/processor.h>
 #include <asm/accounting.h>
+#include <asm/ppc_asm.h>
 
 #define SLB_PRELOAD_NR	16U
 /*
@@ -186,6 +187,43 @@ static inline bool test_thread_local_flags(unsigned int flags)
 #define is_elf2_task() (0)
 #endif
 
+/*
+ * Walks up the stack frames to make sure that the specified object is
+ * entirely contained by a single stack frame.
+ *
+ * Returns:
+ *	GOOD_FRAME	if within a frame
+ *	BAD_STACK	if placed across a frame boundary (or outside stack)
+ */
+static inline int arch_within_stack_frames(const void * const stack,
+					   const void * const stackend,
+					   const void *obj, unsigned long len)
+{
+	const void *params;
+	const void *frame;
+
+	params = *(const void * const *)current_stack_pointer + STACK_FRAME_PARAMS;
+	frame = **(const void * const * const *)current_stack_pointer;
+
+	/*
+	 * low -----------------------------------------------------------> high
+	 * [backchain][metadata][params][local vars][saved registers][backchain]
+	 *                      ^------------------------------------^
+	 *                      |  allows copies only in this region |
+	 *                      |                                    |
+	 *                    params                               frame
+	 * The metadata region contains the saved LR, CR etc.
+	 */
+	while (stack <= frame && frame < stackend) {
+		if (obj + len <= frame)
+			return obj >= params ? GOOD_FRAME : BAD_STACK;
+		params = frame + STACK_FRAME_PARAMS;
+		frame = *(const void * const *)frame;
+	}
+
+	return BAD_STACK;
+}
+
 #endif	/* !__ASSEMBLY__ */
 
 #endif /* __KERNEL__ */