[Bug 2009607] Re: ubiquity-dm crashed with SIGSEGV in PyObject_Vectorcall()

[Bernard Stafford]

2nd install Edubuntu passed.
3rd install Edubuntu bootloader failed.
Daily Build 20230307 QA Testing.
Including screenshot of bootloader failure.
Used automatic install entire disk method.
All testing using same download.

** Attachment added: "Screenshot_2023-01-06_07-24-32.png"
   https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/2009607/+attachment/5652481/+files/Screenshot_2023-01-06_07-24-32.png

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Title:
  ubiquity-dm crashed with SIGSEGV in PyObject_Vectorcall()

Status in ubiquity package in Ubuntu:
  New

Bug description:
  Edubuntu 23.04 Daily Build 20230307 Ubiquity crashed during QA Testing.
  Firefox crashed during this bug report, then reloaded info sent to Firefox.
  Installed in Virtual Box.

  ProblemType: Crash
  DistroRelease: Ubuntu 23.04
  Package: ubiquity 23.04.4
  ProcVersionSignature: Ubuntu 6.1.0-16.16-generic 6.1.6
  Uname: Linux 6.1.0-16-generic x86_64
  ApportVersion: 2.26.0-0ubuntu2
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.480
  Date: Tue Mar  7 14:23:08 2023
  ExecutablePath: /usr/bin/ubiquity-dm
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/edubuntu.seed maybe-ubiquity quiet splash ---
  InterpreterPath: /usr/bin/python3.11
  LiveMediaBuild: Edubuntu 23.04 "Lunar Lobster" - Alpha amd64 Binary-1 (20230307)
  ProcCmdline: /usr/bin/python3 /usr/bin/ubiquity-dm vt1 :0 ubuntu /usr/bin/ubiquity --greeter --only
  ProcEnviron:
   LANG=C.UTF-8
   PATH=(custom, no user)
  Python3Details: /usr/bin/python3.11, Python 3.11.1, python3-minimal, 3.11.1-3
  PythonDetails: N/A
  SegvAnalysis:
   Segfault happened at: 0x4f754a:	mov    0x8(%rax),%rdx
   PC (0x004f754a) ok
   source "0x8(%rax)" (0x4678280d813b9af4) not located in a known VMA region (needed readable region)!
   destination "%rdx" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: ubiquity
  StacktraceTop:
   ?? ()
   PyObject_Vectorcall ()
   _PyEval_EvalFrameDefault ()
   ?? ()
   PySequence_Tuple ()
  Title: ubiquity-dm crashed with SIGSEGV in PyObject_Vectorcall()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: N/A
  separator:

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