On Mon, Dec 20, 2010 at 08:56:46PM +0000, bugzilla-daemon@bugzilla.kernel.org wrote:
> 
> Using resize2fs on an ext4 will result in a corrupted filesystem. This is a
> regression (obviously).

Yes, this is a regression new to 2.6.37-rc1, which was introduced by
commit a31437b85: ext4: use sb_issue_zeroout in setup_new_group_blocks.

When we replaced the loop zero'ing the inode table blocks with
sb_issue_zeroout, we accidentally also removed this little tidbit:

-               ext4_set_bit(bit, bh->b_data);

... which was responsible for setting the block allocation bitmap to
reserve the block descriptor blocks and inode table blocks.  Oops...

I believe this patch should fix things.

						- Ted