[Bug 1877137] [NEW] 32-bit Arm emulation spins at 100% during emacs build

[Edward Vielmetti]

Public bug reported:

This test case exposes a QEMU bug when crossbuilding to arm32. The bug is only
exposed on amd64 architecture or aarch64 hosts that can *only* execute
64 bit applications.

Usage:

./setup.sh # installs docker and tweaks sysctl
./qemu.sh # register qemu so you are able to run containers from other
architectures
./build.sh # try to build the docker image. Process should get stuck
in a 100% CPU loop after a while

Originally reported by, and test case developed by,
Philippe Vaucher.

** Affects: qemu
     Importance: Undecided
         Status: New

** Attachment added: "scripts to reproduce bug"
   
https://bugs.launchpad.net/bugs/1877137/+attachment/5367408/+files/qemu-bug.tar.gz

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https://bugs.launchpad.net/bugs/1877137

Title:
  32-bit Arm emulation spins at 100% during emacs build

Status in QEMU:
  New

Bug description:
  This test case exposes a QEMU bug when crossbuilding to arm32. The bug is only
  exposed on amd64 architecture or aarch64 hosts that can *only* execute
  64 bit applications.

  Usage:

  ./setup.sh # installs docker and tweaks sysctl
  ./qemu.sh # register qemu so you are able to run containers from other
  architectures
  ./build.sh # try to build the docker image. Process should get stuck
  in a 100% CPU loop after a while

  Originally reported by, and test case developed by,
  Philippe Vaucher.

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