plymouthd crashed with SIGSEGV in script_obj_deref_direct()

[Jeremy Price]

After leaving the system idle for ~20 minutes, it was completely unresponsive. After rebooting, the crash occured immediately after logging in.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: plymouth 0.8.2-2ubuntu28
ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
Uname: Linux 3.0.0-11-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu2
Architecture: amd64
Date: Thu Sep 29 18:05:58 2011
DefaultPlymouth: /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
ExecutablePath: /sbin/plymouthd
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413)
MachineType: MSI MS-7578
ProcCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-11-generic root=UUID=55782129-5448-4cfa-a7d2-24fc03322b05 ro quiet splash vt.handoff=7
ProcCmdline: /sbin/plymouthd --mode=boot --attach-to-session
ProcEnviron: PATH=(custom, no user)
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-11-generic root=UUID=55782129-5448-4cfa-a7d2-24fc03322b05 ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x7f0a31070ea0 <script_obj_deref_direct>: cmpl $0x1,(%rdi)
 PC (0x7f0a31070ea0) ok
 source "$0x1" ok
 destination "(%rdi)" (0x726f207465792079) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: plymouth
StacktraceTop:
 script_obj_deref_direct () from /lib/plymouth/script.so
 script_obj_as_custom () from /lib/plymouth/script.so
 script_execute_object () from /lib/plymouth/script.so
 script_lib_plymouth_on_message () from /lib/plymouth/script.so
 ?? () from /lib/plymouth/script.so
TextPlymouth: /lib/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
Title: plymouthd crashed with SIGSEGV in script_obj_deref_direct()
UpgradeStatus: Upgraded to oneiric on 2011-09-04 (25 days ago)
UserGroups:

dmi.bios.date: 03/03/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V1.7
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: NF750-G55 (MS-7578)
dmi.board.vendor: MSI
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV1.7:bd03/03/2011:svnMSI:pnMS-7578:pvr1.0:rvnMSI:rnNF750-G55(MS-7578):rvr1.0:cvnMSI:ct3:cvr1.0:
dmi.product.name: MS-7578
dmi.product.version: 1.0
dmi.sys.vendor: MSI

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #733453, 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.