[Bug 1823790] Re: QEMU mishandling of SO_PEERSEC forces systemd into tight loop

[Charlie Sharpsteen]

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 container with
a responsive systemctl command.

Prior to the patch, systemd did not start any services inside the
container and systemctl would hang when executed directly.

Thanks!
-Charlie

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https://bugs.launchpad.net/bugs/1823790

Title:
  QEMU mishandling of SO_PEERSEC forces systemd into tight loop

Status in QEMU:
  Confirmed

Bug description:
  While building Debian images for embedded ARM target systems I
  detected that QEMU seems to force newer systemd daemons into a tight
  loop.

  My setup is the following:

  Host machine: Ubuntu 18.04, amd64
  LXD container: Debian Buster, arm64, systemd 241
  QEMU: qemu-aarch64-static, 4.0.0-rc2 (custom build) and 3.1.0 (Debian 
1:3.1+dfsg-7)

  To easily reproduce the issue I have created the following repository:
  https://github.com/lueschem/edi-qemu

  The call where systemd gets looping is the following:
  2837 getsockopt(3,1,31,274891889456,274887218756,274888927920) = -1 errno=34 
(Numerical result out of range)

  Furthermore I also verified that the issue is not related to LXD.
  The same behavior can be reproduced using systemd-nspawn.

  This issue reported against systemd seems to be related:
  https://github.com/systemd/systemd/issues/11557

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