Comment # 28 on bug 1175908 from Harald Koenig

(In reply to Franck Bui from comment #23)
> (In reply to Harald Koenig from comment #22)
> > but I notice that lsinitrd does not show the *.ko.xz
> 
> That's due to the sed expression which only shows *.ko modules so it needs
> to be adapted to match *.ko.xz too.

I checked the raw output of lsinitrd, no sed....

in my initrd-5.8.4-1-default I find 2 copies of e.g. dm-crypt.ko.xz with
binwalk,
on in the compressed cpio block starting at 0x19000 (manually extracted into
cpio-root-19000/)
and a 2nd copy in the next uncompressed cpio block which follows (extracted
with "binwalk -e" into cpio-root-0/)
at offset 0x3A40CE :

binwalk /boot/initrd-5.8.4-1-default | grep dm-crypt.ko.xz
3817678       0x3A40CE        ASCII cpio archive (SVR4 with no CRC), file name:
"lib/modules/5.8.4-1-default/kernel/drivers/md/dm-crypt.ko.xz", file name
length: "0x0000003D", file size: "0x000056D0"


stuff extracted with "binwalk -e" and "mkdir pio-root-19000 ; cd pio-root-19000
; cpio -id < ../19000"

$ find /root/I1/_initrd-5.8.4-1-default.extracted/ -name dm-crypt.ko.xz
/root/I1/_initrd-5.8.4-1-default.extracted/cpio-root-19000/lib/modules/5.8.4-1-default/kernel/drivers/md/dm-crypt.ko.xz
/root/I1/_initrd-5.8.4-1-default.extracted/cpio-root-0/lib/modules/5.8.4-1-default/kernel/drivers/md/dm-crypt.ko.xz


whereas lsinitrd only lists one copy -- maybe the output is "optimized" ?
lsinitrd output:

$ lsinitrd | grep dm-crypt.ko.xz
-rw-r--r--   1 root     root        19604 Dec 19  2019
lib/modules/5.3.12-2-default/kernel/drivers/md/dm-crypt.ko.xz