[Bug 1737312] Re: Qemu crashes with signal 6 on arm64 chroot creation on amd64 (installing bash)

[Florian Weimer]

This is a QEMU bug.  It does not implement vfork with proper semantics
and runs both the parent and child in parallel.  It is expected that the
parent blocks until the fate of the child process is decided (successful
execve or exit).

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Title:
  Qemu crashes with signal 6 on arm64 chroot creation on amd64
  (installing bash)

Status in glibc package in Ubuntu:
  New
Status in qemu package in Ubuntu:
  Invalid
Status in glibc source package in Artful:
  New

Bug description:
  Hello, steps to reproduce:

  install pbuilder-dist, and qemu
  pbuilder-dist sid arm64 create (this one works)
  pbuilder-dist bionic arm64 create (this one fails, with this log: http://paste.ubuntu.com/26140607/ )

  Preparing to unpack .../bash_4.4-5ubuntu1_arm64.deb ...
  preinst: ../sysdeps/unix/sysv/linux/spawni.c:368: __spawnix: Assertion `ec >= 0' failed.
  qemu: uncaught target signal 6 (Aborted) - core dumped
  dpkg: error processing archive /var/cache/apt/archives/bash_4.4-5ubuntu1_arm64.deb (--unpack):
   new bash package pre-installation script subprocess was killed by signal (Aborted), core dumped
  dpkg: regarding .../bsdutils_1%3a2.30.2-0.1ubuntu1_arm64.deb containing bsdutils, pre-dependency problem:
   bsdutils pre-depends on libsystemd0
    libsystemd0:arm64 is unpacked, but has never been configured.

  
  somewhat this seems bug https://bugs.launchpad.net/ubuntu/+source/bash/+bug/1725333

  https://github.com/Microsoft/WSL/issues/1878
  https://github.com/Microsoft/WSL/issues/2615

  let me know if you need anything else

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