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

[Tobias Koch]

I carried out the following test:

* fetched the QEMU coming with 18.04,
* added this patch,
* built an LXD container with arch arm64 and the patched qemu-aarch64-static 
inside,
* launched it on amd64

Previously various systemd services would not come up properly, now they
are running like a charm. The only grief I have is that network
configuration does not work, but that is due to

    # ip addr
    Unsupported setsockopt level=270 optname=11

which is a different story.

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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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