1 files changed, 4 insertions, 1 deletions

diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 91ce03fd0c84..df75d574246d 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -83,7 +83,6 @@ static inline int notify_page_fault(struct pt_regs *regs)
 
 /*
  * Find out which address space caused the exception.
- * Access register mode is impossible, ignore space == 3.
  */
 static enum fault_type get_fault_type(struct pt_regs *regs)
 {
@@ -108,6 +107,10 @@ static enum fault_type get_fault_type(struct pt_regs *regs)
                 }
                 return VDSO_FAULT;
         }
+        if (trans_exc_code == 1) {
+                /* access register mode, not used in the kernel */
+                return USER_FAULT;
+        }
         /* home space exception -> access via kernel ASCE */
         return KERNEL_FAULT;
 }