My team is working on a CI environment.
A ko
file, named x.ko
, is always generated from the CI environment at a regular time everyday and its type is ELF 64-bit LSB relocatable
.
Today, I found that the type of this ko
file became data
.
I'm trying to figure out the reason.
I try to cat
this ko
file but the output is nothing. Then, I try to cat -et x.ko
, and it gives me lots of ^@^@^@^@^@^@^@^@^@^@^@^@^@^@
...
Do you know what ^@^@^@^@^@^@^@^@^@
means?
^@
.... that is a CTRL-@ ..... hold ctrl key and press @ ..... it is a NULL ....0
byteod
to analyse binary data. However in this case, all the evidence suggests it is a lot of zero bytes (nulls).