In my case the issue with using Ubuntu 20.04 as a container host appears
to have come down to the use of the F, or "fix binary", flag by
binfmnt_misc:
# cat /proc/sys/fs/binfmt_misc/qemu-aarch64
enabled
interpreter /usr/bin/qemu-aarch64-static
flags: OCF
offset 0
magic 7f454c4602010100
I can confirm that I see the same issue when trying to run Ubuntu 20.04
aarch64 in a container, strace shows a tight loop on:
getsockopt(31, SOL_SOCKET, SO_PEERGROUPS, 0x7ffdbd58941c, [4]) = -1
ERANGE
Re-building qemu-user-static with the patch has fixed Debian 10 armhf
for me, but the same re-bu
Laurent's patch worked for me as well.
I grabbed the source for the Debian 10 qemu-user-static package,
qemu_3.1+dfsg-8+deb10u3, applied the patch and re-built the qemu-arm-
static binary. Copying the new binary into a Docker image based on
arm32v7/debian:10-slim allowed /sbin/init to bring up the
