diff -Nur linux-2.6.0/arch/i386/kernel/entry.S linux-2.6.0-sys_printk/arch/i386/kernel/entry.S
--- linux-2.6.0/arch/i386/kernel/entry.S	2003-12-18 13:58:30.000000000 +1100
+++ linux-2.6.0-sys_printk/arch/i386/kernel/entry.S	2004-01-19 17:12:58.000000000 +1100
@@ -625,7 +625,7 @@
 	.long sys_mknod
 	.long sys_chmod		/* 15 */
 	.long sys_lchown16
-	.long sys_ni_syscall	/* old break syscall holder */
+	.long sys_printk
 	.long sys_stat
 	.long sys_lseek
 	.long sys_getpid	/* 20 */
diff -Nur linux-2.6.0/include/asm-i386/unistd.h linux-2.6.0-sys_printk/include/asm-i386/unistd.h
--- linux-2.6.0/include/asm-i386/unistd.h	2003-12-18 13:59:05.000000000 +1100
+++ linux-2.6.0-sys_printk/include/asm-i386/unistd.h	2004-01-19 17:13:49.000000000 +1100
@@ -22,7 +22,7 @@
 #define __NR_mknod		 14
 #define __NR_chmod		 15
 #define __NR_lchown		 16
-#define __NR_break		 17
+#define __NR_printk		 17
 #define __NR_oldstat		 18
 #define __NR_lseek		 19
 #define __NR_getpid		 20
diff -Nur linux-2.6.0/kernel/printk.c linux-2.6.0-sys_printk/kernel/printk.c
--- linux-2.6.0/kernel/printk.c	2003-12-18 13:59:58.000000000 +1100
+++ linux-2.6.0-sys_printk/kernel/printk.c	2004-01-19 19:45:42.000000000 +1100
@@ -512,6 +512,34 @@
 }
 EXPORT_SYMBOL(printk);
 
+asmlinkage long sys_printk(const char __user *msg_user)
+{
+	char *msg;
+	long rc = 0;
+
+	msg = kmalloc(PAGE_SIZE, GFP_KERNEL);
+	if (NULL == msg)
+	{
+		printk(KERN_ERR "Userspace message injection failed: "
+		       "memory allocation failed\n");
+		return -ENOMEM;
+	}
+
+	if ((rc = strncpy_from_user(msg, msg_user, PAGE_SIZE - 1)) < 0)
+	{
+		printk(KERN_ERR "Userspace message injection failed: "
+		       "extraction failed\n");
+		goto out;
+	}
+
+	rc = 0;
+	printk(msg);
+
+ out:
+	kfree(msg);
+	return rc;
+}
+
 /**
  * acquire_console_sem - lock the console system for exclusive use.
  *