2.4.7-ac7 kernel, system freezed when copying files onto loop device

Hi,

I got my system frozen when copying my root partition to a loop device

dd if=/dev/zero of=root bs=1k count=100k
mke2fs -m 0 root

mount -o loop root /mnt/disk

tar -xf root.tgz -z
(root.tgz is small compressed backup root partition) cd root
cp -a * /mnt/disk

(the source partition is ext3, target ext2)

it runs for a while and system hang.No message, no oopses etc..

It did not happen with 2.4.6 with ext3 version 0.9.5 patch.

what is the cause?

Regards

=====
S.KIEU

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