Bug#844749: live-build: Jessie image with backported kernel (linux-image-4.7.0-0.bpo.1-amd64) doesn't boot

["Igor Starkov" <debian22@lanoffice.ru>]

> Igor Starkov:
>>    [    2.974235] FAT-fs (sda1): IO charset ascii not found
>>    mount: mounting /dev/sda1 on /live/medium failed: Invalid argument
>>       ....  skipped similar lines ....
>>    [   63.554664] FAT-fs (sda1): IO charset ascii not found
>>    mount: mounting /dev/sda1 on /live/medium failed: Invalid argument
>
> Try adding a "nls_ascii" line (without quotes) in
> /etc/initramfs-tools/modules.
>
>

After "lb config" I did:

mkdir -p config/includes.chroot/etc/initramfs-tools/
echo "nls_ascii" > config/includes.chroot/etc/initramfs-tools/modules

Then I've builded image. Error has changed:

---------------------------
[    2.283298] usbcore: registered new interface driver usb-storage
Begin: Running /scripts/live-realpremount ..  done.
Begin: Mounting "/live/medium/live/filesystem.squashfs" on
"//filesystem.squashfs" via "/dev/loop0".   done.
[    2.928209] clocksource: Switched to clocksource tsc


BusyBox v1.22.1 (Debian 1:1.22.0-9+deb8u1) built-in shell (ash)
Enter 'help' for a list of built-in commands.

/bin/sh: can't access tty; job control turned off
(initramfs) mount: mounting /dev/sda on /live/persistence/sda failed: No
such device
mount: mounting aufs on /root/ failed: No such device
mount aufs on /root/ failed with option -o
noatime,noxino,dirs=/live/overlay/=rw://filesystem.squashfs/=rr+wh
modprobe: module ehci-orion not found in modules.dep

(initramfs)
---------------------------

But still no luck.