[Arm-dev] Chrooting/Docker to armv7hl and armv5tel on aarch64
gordan at redsleeve.org
Sat Jan 26 17:44:52 UTC 2019
Yes, they are "wrong", but not "WRONG!".
As I (possibly poorly) explained, I'm running on an aarch64 machine, but am
trying to run armv5tel and armv7hl chroots.
I just dug out an old kernel I was using (4.4.72) and I can now chroot just
So it's something that changed in the kernel, but I'm not sure what else it
could be other than the page size (which I already checked).
I'm going to build the latest 4.4.172 with my 4.4.72 config and see if that
works. If it does, I'll try to make oldconfig that on 4.9.153 and try
again, see if that breaks things again. I was just hoping there might be an
option I missed in 4.9 that enables/disables downward compatibility.
On Sat, Jan 26, 2019 at 5:41 PM Stephan GUILLOUX <stephan.guilloux at free.fr>
> Wrong architecture binaries, in the chroot'ed folder ?
> What do you get with:
> file <chroot>/bin/bash
> On 26-Jan-19 17:49, Gordan Bobic wrote:
> > It's been so long since I last had to do this, that it looks like a
> > kernel update somewhere along the way broke this for me. :-(
> > What happens now:
> > # chroot rs7
> > chroot: failed to run command ‘/bin/bash’: Exec format error
> > I could have sworn that this was all I needed to make this work last
> > # grep 4K_PAGES config-4.9.153-1.el7.centos.aarch64
> > CONFIG_ARM64_4K_PAGES=y
> > # CONFIG_ARM64_64K_PAGES is not set
> > Unfortunately, now trying to chroot into either hard-float or
> > soft-float chroot results in the exec format error.
> > Looking at time stamps of various things, I had this working with
> > 4.4.70, but have since switched to 4.9.x kernels. Any thoughts on what
> > changed between 4.4 and 4.9 would be most appreciated.
> > What am I missing?
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