--- zzzz-none-000/linux-3.10.107/arch/powerpc/oprofile/backtrace.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/powerpc/oprofile/backtrace.c	2021-02-04 17:41:59.000000000 +0000
@@ -10,8 +10,9 @@
 #include <linux/oprofile.h>
 #include <linux/sched.h>
 #include <asm/processor.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <asm/compat.h>
+#include <asm/oprofile_impl.h>
 
 #define STACK_SP(STACK)		*(STACK)
 
@@ -104,6 +105,7 @@
 			first_frame = 0;
 		}
 	} else {
+		pagefault_disable();
 #ifdef CONFIG_PPC64
 		if (!is_32bit_task()) {
 			while (depth--) {
@@ -112,7 +114,7 @@
 					break;
 				first_frame = 0;
 			}
-
+			pagefault_enable();
 			return;
 		}
 #endif
@@ -123,5 +125,6 @@
 				break;
 			first_frame = 0;
 		}
+		pagefault_enable();
 	}
 }