Kernel Panic apres Changement du syscall CHROOT [Résolu]

[3logy]

Salut j'utilise Ubuntu Maverick,
lorsque je compile le kernel 2.6.36.2 en changeant la fonction syscall_chroot :

Code :

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 SYSCALL_DEFINE1(chroot, const char __user *, filename)
{
	struct path path;
	int error;
	
	/* Hack */
	struct user_struct * myUser;
	char * buf = NULL; //Buffer
	struct path user_path; // current path
	buf = vmalloc(sizeof(char)*PATH_MAX);
	/* Hack */

	error = user_path_dir(filename, &path);
	if (error)
		goto out;

	error = inode_permission(path.dentry->d_inode, MAY_EXEC | MAY_CHDIR);
	if (error)
		goto dput_and_out;

	error = -EPERM;
	if (!capable(CAP_SYS_CHROOT))
		goto dput_and_out;
	error = security_path_chroot(&path);
	if (error)
		goto dput_and_out;
	
	/* Hack */
	printk("HACK Begin \n");
	myUser = get_current_user();
        printk("current user : UID=%d \n", myUser->uid);
        
	printk("change from folder %s with Inode : %ld \n", d_path(&user_path, buf, PATH_MAX), user_path.dentry->d_inode->i_ino);
	printk("to folder %s with Inode : %ld \n", d_path(&path, buf, PATH_MAX), path.dentry->d_inode->i_ino);
	vfree(buf);
	
	/* End Hack */

        set_fs_root(current->fs, &path);
	error = 0;
dput_and_out:
	path_put(&path);
out:
	return error;


}

J'ai automatiquement un kernel Panic!
Y a t-il une Erreur dans le code?? je m'y connais pas tres bien en programmation kernel.

Merci