plymouthd crashed with SIGSEGV in script_obj_deref_direct()

[rikolino]

It happens every time starting Ubuntu.

ProblemType: Crash
DistroRelease: Ubuntu 17.10
Package: plymouth 0.9.2-3ubuntu17
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu3
Architecture: amd64
BootLog: Error: [Errno 2] No such file or directory: '/var/log/boot.log'
Date: Fri Oct 20 10:15:54 2017
DefaultPlymouth: /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
ExecutablePath: /sbin/plymouthd
InstallationDate: Installed on 2017-10-20 (2 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 002 Device 002: ID 80ee:0021 VirtualBox USB Tablet
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: innotek GmbH VirtualBox
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-16-generic root=UUID=57388cbf-468b-4d5e-899e-5ad827b3e4e5 ro quiet splash
ProcCmdline: @sbin/plymouthd --mode=boot --pid-file=/run/plymouth/pid --attach-to-session
ProcFB: 0 vboxdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-16-generic root=UUID=57388cbf-468b-4d5e-899e-5ad827b3e4e5 ro quiet splash
SegvAnalysis:
 Segfault happened at: 0x7f23818d6434 <script_obj_deref_direct+20>: cmpl $0x1,(%rax)
 PC (0x7f23818d6434) ok
 source "$0x1" ok
 destination "(%rax)" (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-text/ubuntu-text.plymouth
Title: plymouthd crashed with SIGSEGV in script_obj_deref_direct()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.board.name: VirtualBox
dmi.board.vendor: Oracle Corporation
dmi.board.version: 1.2
dmi.chassis.type: 1
dmi.chassis.vendor: Oracle Corporation
dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr:
dmi.product.family: Virtual Machine
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #927636, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.