[Bug 1542000] Re: plymouthd crashed with SIGSEGV in script_obj_deref_direct()

[YANG Gengzhen]

does this bug fixed?
it happened to me on Ubuntu 18.04.1

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Title:
  plymouthd crashed with SIGSEGV in script_obj_deref_direct()

Status in plymouth package in Ubuntu:
  Confirmed

Bug description:
  when start login screen plimuth crash and auto login don't start.
  Start login screen GDM3

  ProblemType: Crash
  DistroRelease: Ubuntu 16.04
  Package: plymouth 0.9.2-3ubuntu9
  ProcVersionSignature: Ubuntu 4.4.0-2.16-generic 4.4.0
  Uname: Linux 4.4.0-2-generic x86_64
  ApportVersion: 2.19.4-0ubuntu2
  Architecture: amd64
  Date: Thu Feb  4 20:19:23 2016
  DefaultPlymouth: /usr/share/plymouth/themes/ubuntu-gnome-logo/ubuntu-gnome-logo.plymouth
  ExecutablePath: /sbin/plymouthd
  InstallationDate: Installed on 2016-01-27 (8 days ago)
  InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160126)
  MachineType: LENOVO 80EW
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-2-generic root=UUID=96e91037-4caa-46d6-b0b0-ecc19860fae0 ro quiet splash vt.handoff=7
  ProcCmdline: @sbin/plymouthd --mode=boot --pid-file=/run/plymouth/pid --attach-to-session
  ProcEnviron:
   LANG=it_IT.UTF-8
   PATH=(custom, no user)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-2-generic root=UUID=96e91037-4caa-46d6-b0b0-ecc19860fae0 ro quiet splash vt.handoff=7
  SegvAnalysis:
   Segfault happened at: 0x7fac854ff660 <script_obj_deref_direct>:	cmpl   $0x1,(%rdi)
   PC (0x7fac854ff660) ok
   source "$0x1" ok
   destination "(%rdi)" (0x00000000) not located in a known VMA region (needed writable region)!
  SegvReason: writing NULL VMA
  Signal: 11
  SourcePackage: plymouth
  StacktraceTop:
   script_obj_deref_direct () from /usr/lib/x86_64-linux-gnu/plymouth/script.so
   script_obj_as_custom () from /usr/lib/x86_64-linux-gnu/plymouth/script.so
   script_execute_object () from /usr/lib/x86_64-linux-gnu/plymouth/script.so
   script_lib_plymouth_on_update_status () from /usr/lib/x86_64-linux-gnu/plymouth/script.so
   ?? ()
  TextPlymouth: /usr/share/plymouth/themes/ubuntu-gnome-text/ubuntu-gnome-text.plymouth
  Title: plymouthd crashed with SIGSEGV in script_obj_deref_direct()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  dmi.bios.date: 07/14/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: A8CN47WW(V3.00)
  dmi.board.asset.tag: NO Asset Tag
  dmi.board.name: Lenovo B50-80
  dmi.board.vendor: LENOVO
  dmi.board.version: No DPK
  dmi.chassis.asset.tag: NO Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo B50-80
  dmi.modalias: dmi:bvnLENOVO:bvrA8CN47WW(V3.00):bd07/14/2015:svnLENOVO:pn80EW:pvrLenovoB50-80:rvnLENOVO:rnLenovoB50-80:rvrNoDPK:cvnLENOVO:ct10:cvrLenovoB50-80:
  dmi.product.name: 80EW
  dmi.product.version: Lenovo B50-80
  dmi.sys.vendor: LENOVO

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