plymouthd crashed with SIGSEGV in script_obj_deref_direct()

[Per-Inge]

Got this directly after restart after installing updates 2018-01-27.
Answered a question about Grub with "keep the installed customized version".

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: plymouth 0.9.3-1ubuntu1
Uname: Linux 4.15.0-041500rc7-generic x86_64
ApportVersion: 2.20.8-0ubuntu6
Architecture: amd64
Date: Wed Jan 24 21:13:40 2018
DefaultPlymouth: /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
ExecutablePath: /sbin/plymouthd
InstallationDate: Installed on 2017-09-15 (133 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170915)
MachineType: Micro-Star International Co., Ltd. MS-7A34
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-041500rc7-generic root=UUID=527726c6-7d7b-4747-a720-5516b68ae81a ro amdgpu.dc=1 quiet splash vt.handoff=1
ProcCmdline: @sbin/plymouthd --mode=boot --pid-file=/run/plymouth/pid --attach-to-session
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-041500rc7-generic root=UUID=527726c6-7d7b-4747-a720-5516b68ae81a ro amdgpu.dc=1 quiet splash vt.handoff=1
SegvAnalysis:
 Segfault happened at: 0x7efda0cd0494 <script_obj_deref_direct+20>: cmpl $0x1,(%rax)
 PC (0x7efda0cd0494) ok
 source "$0x1" ok
 destination "(%rax)" (0x001be6ea) 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_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: 09/19/2017
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.90
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: B350 TOMAHAWK (MS-7A34)
dmi.board.vendor: Micro-Star International Co., Ltd.
dmi.board.version: 1.0
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Micro-Star International Co., Ltd.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.90:bd09/19/2017:svnMicro-StarInternationalCo.,Ltd.:pnMS-7A34:pvr1.0:rvnMicro-StarInternationalCo.,Ltd.:rnB350TOMAHAWK(MS-7A34):rvr1.0:cvnMicro-StarInternationalCo.,Ltd.:ct3:cvr1.0:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: MS-7A34
dmi.product.version: 1.0
dmi.sys.vendor: Micro-Star International Co., Ltd.

[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.