From: Al Viro <viro@ftp.linux.org.uk>
Date: Sat, 23 Sep 2006 00:37:41 +0000 (+0100)
Subject: [POWERPC] powerpc oprofile __user annotations
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=62034f03380a64c0144b6721f4a2aa55d65346c1;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[POWERPC] powerpc oprofile __user annotations

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

diff --git a/arch/powerpc/oprofile/backtrace.c b/arch/powerpc/oprofile/backtrace.c
index 75f57bc96b40..b4278cfd1f80 100644
--- a/arch/powerpc/oprofile/backtrace.c
+++ b/arch/powerpc/oprofile/backtrace.c
@@ -11,6 +11,7 @@
 #include <linux/sched.h>
 #include <asm/processor.h>
 #include <asm/uaccess.h>
+#include <asm/compat.h>
 
 #define STACK_SP(STACK)		*(STACK)
 
@@ -26,8 +27,9 @@
 static unsigned int user_getsp32(unsigned int sp, int is_first)
 {
 	unsigned int stack_frame[2];
+	void __user *p = compat_ptr(sp);
 
-	if (!access_ok(VERIFY_READ, sp, sizeof(stack_frame)))
+	if (!access_ok(VERIFY_READ, p, sizeof(stack_frame)))
 		return 0;
 
 	/*
@@ -35,8 +37,7 @@ static unsigned int user_getsp32(unsigned int sp, int is_first)
 	 * which means that we've done all that we can do from
 	 * interrupt context.
 	 */
-	if (__copy_from_user_inatomic(stack_frame, (void *)(long)sp,
-					sizeof(stack_frame)))
+	if (__copy_from_user_inatomic(stack_frame, p, sizeof(stack_frame)))
 		return 0;
 
 	if (!is_first)
@@ -54,10 +55,10 @@ static unsigned long user_getsp64(unsigned long sp, int is_first)
 {
 	unsigned long stack_frame[3];
 
-	if (!access_ok(VERIFY_READ, sp, sizeof(stack_frame)))
+	if (!access_ok(VERIFY_READ, (void __user *)sp, sizeof(stack_frame)))
 		return 0;
 
-	if (__copy_from_user_inatomic(stack_frame, (void *)sp,
+	if (__copy_from_user_inatomic(stack_frame, (void __user *)sp,
 					sizeof(stack_frame)))
 		return 0;