CRC error in cramfsck

[w h]

Hi,

Today I meet a problem which makes me tear my hair out. This phenomenon 
never occurred before.I use Moto DragonBall MX1 ADS.

The command "cramfsck -x Dir Filename" worked ok before. But this afternoon 
when I use it to decompress some cramfs file I made by myself, it occurs 
the error as following. But it works well with the original root.cramfs in 
MX1 ADS. 
warning: file extends past end of filesystem
./crmfsck: crc error

Also there is error in using "mkcrmfs Dir Filename" to make my own cramfs 
file, which never 
happened before:

Everything: 4 kilobytes
Super block:76 bytes
CRC:fdeb894a

Is there anyone who knows the reason? Please help. Thanks!

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