diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 257ffb993ea2..f00de83d0246 100644
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -137,7 +137,7 @@ static void __acct_update_integrals(struct task_struct *tsk,
 	 * the rest of the math is done in xacct_add_tsk.
 	 */
 	tsk->acct_rss_mem1 += delta * get_mm_rss(tsk->mm) >> 10;
-	tsk->acct_vm_mem1 += delta * tsk->mm->total_vm >> 10;
+	tsk->acct_vm_mem1 += delta * READ_ONCE(tsk->mm->total_vm) >> 10;
 }
 
 /**
diff --git a/mm/mmap.c b/mm/mmap.c
index 88dcc5c25225..b22a07f5e761 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -3332,7 +3332,7 @@ bool may_expand_vm(struct mm_struct *mm, vm_flags_t flags, unsigned long npages)
 
 void vm_stat_account(struct mm_struct *mm, vm_flags_t flags, long npages)
 {
-	mm->total_vm += npages;
+	WRITE_ONCE(mm->total_vm, READ_ONCE(mm->total_vm)+npages);
 
 	if (is_exec_mapping(flags))
 		mm->exec_vm += npages;