diff --git a/arch/x86/kernel/uprobes.c b/arch/x86/kernel/uprobes.c
index cdd6909affcb35a013f3d7c1d8a392d41e90da1b..aecc220543843dc387675323951b2d7fa59a533c 100644
--- a/arch/x86/kernel/uprobes.c
+++ b/arch/x86/kernel/uprobes.c
@@ -408,6 +408,11 @@ struct uprobe_xol_ops {
 	int	(*post_xol)(struct arch_uprobe *, struct pt_regs *);
 };
 
+static inline int sizeof_long(void)
+{
+	return is_ia32_task() ? 4 : 8;
+}
+
 static int default_pre_xol_op(struct arch_uprobe *auprobe, struct pt_regs *regs)
 {
 	pre_xol_rip_insn(auprobe, regs, &current->utask->autask);
@@ -419,21 +424,14 @@ static int default_pre_xol_op(struct arch_uprobe *auprobe, struct pt_regs *regs)
  */
 static int adjust_ret_addr(unsigned long sp, long correction)
 {
-	int rasize, ncopied;
-	long ra = 0;
-
-	if (is_ia32_task())
-		rasize = 4;
-	else
-		rasize = 8;
+	int rasize = sizeof_long();
+	long ra;
 
-	ncopied = copy_from_user(&ra, (void __user *)sp, rasize);
-	if (unlikely(ncopied))
+	if (copy_from_user(&ra, (void __user *)sp, rasize))
 		return -EFAULT;
 
 	ra += correction;
-	ncopied = copy_to_user((void __user *)sp, &ra, rasize);
-	if (unlikely(ncopied))
+	if (copy_to_user((void __user *)sp, &ra, rasize))
 		return -EFAULT;
 
 	return 0;
@@ -450,10 +448,7 @@ static int default_post_xol_op(struct arch_uprobe *auprobe, struct pt_regs *regs
 
 	if (auprobe->fixups & UPROBE_FIX_CALL) {
 		if (adjust_ret_addr(regs->sp, correction)) {
-			if (is_ia32_task())
-				regs->sp += 4;
-			else
-				regs->sp += 8;
+			regs->sp += sizeof_long();
 			return -ERESTART;
 		}
 	}
@@ -714,23 +709,21 @@ bool arch_uprobe_skip_sstep(struct arch_uprobe *auprobe, struct pt_regs *regs)
 unsigned long
 arch_uretprobe_hijack_return_addr(unsigned long trampoline_vaddr, struct pt_regs *regs)
 {
-	int rasize, ncopied;
+	int rasize = sizeof_long(), nleft;
 	unsigned long orig_ret_vaddr = 0; /* clear high bits for 32-bit apps */
 
-	rasize = is_ia32_task() ? 4 : 8;
-	ncopied = copy_from_user(&orig_ret_vaddr, (void __user *)regs->sp, rasize);
-	if (unlikely(ncopied))
+	if (copy_from_user(&orig_ret_vaddr, (void __user *)regs->sp, rasize))
 		return -1;
 
 	/* check whether address has been already hijacked */
 	if (orig_ret_vaddr == trampoline_vaddr)
 		return orig_ret_vaddr;
 
-	ncopied = copy_to_user((void __user *)regs->sp, &trampoline_vaddr, rasize);
-	if (likely(!ncopied))
+	nleft = copy_to_user((void __user *)regs->sp, &trampoline_vaddr, rasize);
+	if (likely(!nleft))
 		return orig_ret_vaddr;
 
-	if (ncopied != rasize) {
+	if (nleft != rasize) {
 		pr_err("uprobe: return address clobbered: pid=%d, %%sp=%#lx, "
 			"%%ip=%#lx\n", current->pid, regs->sp, regs->ip);