kernel panic on ext3

["Hiroyuki Kudo" <h-kudo pst fujitsu com>]

Hello, Sir.

My name is Hiroyuki Kudo.
I have a problem using ext3 in my system DELL PowerEdge 1550.
I recently installed RedHat 7.2 (kernel-2.4.7-2) and found that it
used ext3. Later, since I needed to use nfsv4, I got 
kernel-2.4.4-nfsv4.  But it didn't start up and saying `kernel panic`
What is wrong with it?
If the problem can be cleared with ext3-patch, how can I do it?

-----------------------------------
Hiroyuki Kudo
Fujitsu Prime Software Technologies Ltd.
Nagoya, Japan
e-mail <h-kudo pst fujitsu com>

operations
---------
cd /usr/src/
rm linux linux.org
tar zxvf nfsv4-01-07-16.tar.gz
ln -s linux-2.4.4-nfsv4 linux-2.4
ln -s linux-2.4.4-nfsv4 linux

cd /usr/include/
rm linux linux-org
rm asm asm-org
ln -s /usr/src/linux-2.4/include/linux  linux
ln -s /usr/src/linux-2.4/include/asm  asm

cd /usr/src/linux-2.4/
make distclean
make menuconfig
make dep clean bzImage modules modules_install
cp System.map  /boot/System.map-nfsv4
cp arch/i386/boot/bzImage  /boot/vmlinuz-nfsv4

cd /boot/grub
vi grub.conf
(add list for vmlinuz-nfsv4)
:wq

reboot

... kernel panic