diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 13815d39f7dd2c757590c416298c71176f795f81..7cf46423441940a975de0c60cdbca6a736018921 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -65,6 +65,7 @@ FixPerRegisters(struct task_struct *task)
 {
 	struct pt_regs *regs;
 	per_struct *per_info;
+	per_cr_words cr_words;
 
 	regs = task_pt_regs(task);
 	per_info = (per_struct *) &task->thread.per_info;
@@ -98,6 +99,13 @@ FixPerRegisters(struct task_struct *task)
 		per_info->control_regs.bits.storage_alt_space_ctl = 1;
 	else
 		per_info->control_regs.bits.storage_alt_space_ctl = 0;
+
+	if (task == current) {
+		__ctl_store(cr_words, 9, 11);
+		if (memcmp(&cr_words, &per_info->control_regs.words,
+			   sizeof(cr_words)) != 0)
+			__ctl_load(per_info->control_regs.words, 9, 11);
+	}
 }
 
 void user_enable_single_step(struct task_struct *task)