Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/poison.h b/include/linux/poison.h
index 15927eb..df34330 100644
--- a/include/linux/poison.h
+++ b/include/linux/poison.h
@@ -21,7 +21,7 @@
  * non-initialized list entries.
  */
 #define LIST_POISON1  ((void *) 0x100 + POISON_POINTER_DELTA)
-#define LIST_POISON2  ((void *) 0x200 + POISON_POINTER_DELTA)
+#define LIST_POISON2  ((void *) 0x122 + POISON_POINTER_DELTA)
 
 /********** include/linux/timer.h **********/
 /*
@@ -30,7 +30,7 @@
  */
 #define TIMER_ENTRY_STATIC	((void *) 0x300 + POISON_POINTER_DELTA)
 
-/********** mm/debug-pagealloc.c **********/
+/********** mm/page_poison.c **********/
 #ifdef CONFIG_PAGE_POISONING_ZERO
 #define PAGE_POISON 0x00
 #else
@@ -83,9 +83,6 @@
 #define MUTEX_DEBUG_FREE	0x22
 #define MUTEX_POISON_WW_CTX	((void *) 0x500 + POISON_POINTER_DELTA)
 
-/********** lib/flex_array.c **********/
-#define FLEX_ARRAY_FREE	0x6c	/* for use-after-free poisoning */
-
 /********** security/ **********/
 #define KEY_DESTROY		0xbd