diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index 17616d79ab90..19c749a5b610 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -131,7 +131,7 @@ static long get_user_pfn(struct mm_struct *mm, unsigned long addr)
 	long pfn = -1;
 	pgd_t *pgd;
 
-	if (!mm)
+	if (!mm || addr >= VMALLOC_START)
 		mm = &init_mm;
 
 	pgd = pgd_offset(mm, addr);
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c
index d97e502e6d9f..2a976fc4299c 100644
--- a/arch/arm64/mm/fault.c
+++ b/arch/arm64/mm/fault.c
@@ -174,7 +174,7 @@ static long get_user_pfn(struct mm_struct *mm, unsigned long addr)
 	long pfn = -1;
 	pgd_t *pgd;
 
-	if (!mm)
+	if (!mm || addr >= VMALLOC_START)
 		mm = &init_mm;
 
 	pgd = pgd_offset(mm, addr);