plymouthd crashed with SIGSEGV in script_obj_deref_direct()

[Mattia Vitturi]

Booted up Ubuntu 18.04 and welcomed with this error

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: plymouth 0.9.3-1ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
Uname: Linux 4.15.0-10-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
Date: Sun Mar 11 19:02:39 2018
DefaultPlymouth: /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
ExecutablePath: /sbin/plymouthd
InstallationDate: Installed on 2018-03-11 (0 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180311)
MachineType: Acer Aspire E5-772G
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-10-generic.efi.signed root=UUID=8f03d902-b460-46fa-b8e1-53aafa30626c ro quiet splash vt.handoff=1
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-4.15.0-10-generic.efi.signed root=UUID=8f03d902-b460-46fa-b8e1-53aafa30626c ro quiet splash vt.handoff=1
SegvAnalysis:
 Segfault happened at: 0x7fcf797fd480 <script_obj_deref_direct>: cmpl $0x1,(%rdi)
 PC (0x7fcf797fd480) ok
 source "$0x1" ok
 destination "(%rdi)" (0x2d504400305f3230) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown 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_display_normal () from /usr/lib/x86_64-linux-gnu/plymouth/script.so
 ?? () 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: 07/28/2015
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V1.09
dmi.board.asset.tag: No Asset Tag
dmi.board.name: Aspire E5-772G
dmi.board.vendor: Acer
dmi.board.version: V1.09
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.09
dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.09:bd07/28/2015:svnAcer:pnAspireE5-772G:pvrV1.09:rvnAcer:rnAspireE5-772G:rvrV1.09:cvnAcer:ct10:cvrV1.09:
dmi.product.family: BDW
dmi.product.name: Aspire E5-772G
dmi.product.version: V1.09
dmi.sys.vendor: Acer

[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 #1745406, 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.