Qemu Debian x86 on RaspberryPi

Issue

I want to create i386 environment with QEMU and chroot on Raspberry Pi. I am using Raspberry Pi ver B, but I guess it should not matter much which version is used.

So far I did:

apt-get install qemu qemu-user qemu-user-static binfmt-support debootstrap binutils

Then I mounted chroot directory to /tmp/mnt and ran:

sudo debootstrap --foreign --arch i386 buster  ./ http://deb.debian.org/debian/

Then I mounted:

mount -t sysfs /sys /tmp/mnt/sys/
mount -t proc /proc /tmp/mnt/proc/
mount –bind /dev /tmp/mnt/dev/
mount –bind /dev/pts /tmp/mnt/dev/pts/
mount –bind /dev/shm /tmp/mnt/dev/shm/

Now when I try to run second stage of debootstrap:

sudo chroot ./ ./debootstrap/debootstrap --second-stage

I get the following error message:

W: Failure trying to run:  /sbin/ldconfig
W: See //debootstrap/debootstrap.log for details

I checked the debootstrap/debootstrap.log:

qemu: uncaught target signal 11 (Segmentation fault) - core dumped 
Segmentation fault

Indeed when I try sudo chroot ./ ./sbin/ldconfig I get same Seg fault. But when I try sudo chroot ./ ./bin/bash it works.

I am not sure what should be my next step.

I guess it is something related to my qemu config or verison (I am using version 2.8.1(Debian 1:2.8+dfsg-6+deb9u4)). I checked many threads about similar issues, but I could not find one which would help me to find the solution.

Solution

OK, I think I figured it out.

It works when I select stretch as Debian version in debootstrap command.

sudo debootstrap --foreign --arch i386 stretch  ./ http://deb.debian.org/debian/

Now when I think about it more, it makes sense. I guess running i386 Debian in chroot does not provide full separation from host OS (I mounted proc, sys, etc.).

Answered By - Michal