diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 59cedfb..cf5bc2f 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -246,8 +246,8 @@
 	unsigned n;
 	if (unlikely(!ctx))
 		return 0;
-
 	n = ctx->major;
+
 	switch (audit_classify_syscall(ctx->arch, n)) {
 	case 0:	/* native */
 		if ((mask & AUDIT_PERM_WRITE) &&
@@ -1204,13 +1204,13 @@
 				 (context->return_valid==AUDITSC_SUCCESS)?"yes":"no",
 				 context->return_code);
 
-	mutex_lock(&tty_mutex);
-	read_lock(&tasklist_lock);
+	spin_lock_irq(&tsk->sighand->siglock);
 	if (tsk->signal && tsk->signal->tty && tsk->signal->tty->name)
 		tty = tsk->signal->tty->name;
 	else
 		tty = "(none)";
-	read_unlock(&tasklist_lock);
+	spin_unlock_irq(&tsk->sighand->siglock);
+
 	audit_log_format(ab,
 		  " a0=%lx a1=%lx a2=%lx a3=%lx items=%d"
 		  " ppid=%d pid=%d auid=%u uid=%u gid=%u"
@@ -1230,7 +1230,6 @@
 		  context->egid, context->sgid, context->fsgid, tty,
 		  tsk->sessionid);
 
-	mutex_unlock(&tty_mutex);
 
 	audit_log_task_info(ab, tsk);
 	if (context->filterkey) {