--- linux-2.6.11.6-vs1.9.5.5/kernel/sys.c	2005-04-04 05:14:16 +0200
+++ linux-2.6.11.6-vs1.9.5.5/kernel/sys.c	2005-04-04 21:54:48 +0200
@@ -1087,8 +1087,13 @@ asmlinkage long sys_setsid(void)
 	struct pid *pid;
 	int err = -EPERM;
 
+	printk("sys_setsid(%p): pid=%d, tgl=%d, initpid=%d\n",
+		current, current->pid, thread_group_leader(current), 
+		vx_current_initpid(current->pid));
+
 	if (!thread_group_leader(current))
 		return -EINVAL;
+	printk("sys_setsid(%p) -- no EINVAL\n", current);
 
 	down(&tty_sem);
 	write_lock_irq(&tasklist_lock);
@@ -1096,6 +1101,7 @@ asmlinkage long sys_setsid(void)
 	pid = find_pid(PIDTYPE_PGID, current->pid);
 	if (pid || vx_current_initpid(current->pid))
 		goto out;
+	printk("sys_setsid(%p) -- no EPERM\n", current);
 
 	current->signal->leader = 1;
 	__set_special_task_pids(current, current->pid, current->pid);
@@ -1105,6 +1111,7 @@ asmlinkage long sys_setsid(void)
 out:
 	write_unlock_irq(&tasklist_lock);
 	up(&tty_sem);
+	printk("sys_setsid(%p) -- ret=%d\n", current, err);
 	return err;
 }