[Bug 927636] Re: plymouthd crashed with SIGSEGV in script_obj_deref_direct()

[corrado venturini]

just inserted an usb pen containing an iso created with startup disk
creator

corrado at corrado-art-gnome:~$ inxi -Fx
System:    Host: corrado-art-gnome Kernel: 4.10.0-22-generic x86_64 (64 bit gcc: 6.3.0)
           Desktop: Gnome 3.24.2 (Gtk 3.22.15-0ubuntu1) Distro: Ubuntu Artful Aardvark (development branch)
Machine:   Device: desktop Mobo: Gigabyte model: H87M-D3H v: x.x UEFI: American Megatrends v: F3 date: 04/24/2013
CPU:       Dual core Intel Core i3-4130 (-HT-MCP-) cache: 3072 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 13569
           clock speeds: max: 3400 MHz 1: 1115 MHz 2: 953 MHz 3: 1173 MHz 4: 822 MHz
Graphics:  Card: Intel 4th Generation Core Processor Family Integrated Graphics Controller bus-ID: 00:02.0
           Display Server: X.Org 1.19.3 driver: N/A Resolution: 1680x1050 at 59.88hz
           GLX Renderer: Mesa DRI Intel Haswell GLX Version: 3.0 Mesa 17.1.0 Direct Rendering: Yes
Audio:     Card-1 Intel 8 Series/C220 Series High Definition Audio Controller
           driver: snd_hda_intel bus-ID: 00:1b.0
           Card-2 Intel Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller
           driver: snd_hda_intel bus-ID: 00:03.0
           Sound: Advanced Linux Sound Architecture v: k4.10.0-22-generic
Network:   Card: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           driver: r8169 v: 2.3LK-NAPI port: e000 bus-ID: 02:00.0
           IF: enp2s0 state: up speed: 100 Mbps duplex: full mac: 94:de:80:7e:90:a7
Drives:    HDD Total Size: 1016.5GB (13.0% used)
           ID-1: /dev/sda model: ST1000DM003 size: 1000.2GB
           ID-2: USB /dev/sdf model: SanDisk_Cruzer size: 16.3GB
Partition: ID-1: / size: 32G used: 7.3G (25%) fs: ext4 dev: /dev/sda8
           ID-2: swap-1 size: 8.59GB used: 0.00GB (0%) fs: swap dev: /dev/sda2
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 29.8C mobo: 27.8C
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 274 Uptime: 1:59 Memory: 1598.1/7861.1MB Init: systemd runlevel: 5 Gcc sys: 6.3.0
           Client: Shell (bash 4.4.121) inxi: 2.3.8 
corrado at corrado-art-gnome:~$

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https://bugs.launchpad.net/bugs/927636

Title:
  plymouthd crashed with SIGSEGV in script_obj_deref_direct()

Status in Plymouth:
  Confirmed
Status in plymouth package in Ubuntu:
  Triaged

Bug description:
  Ubuntu 12.04 LTS (development branch)

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: plymouth 0.8.2-2ubuntu28
  ProcVersionSignature: Ubuntu 3.2.0-14.23-generic 3.2.3
  Uname: Linux 3.2.0-14-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 1.91-0ubuntu1
  Architecture: amd64
  Date: Mon Feb  6 07:03:15 2012
  DefaultPlymouth: /lib/plymouth/themes/xubuntu-logo/xubuntu-logo.plymouth
  ExecutablePath: /sbin/plymouthd
  MachineType: Foxconn AMD HDZS01
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-14-generic root=UUID=0bb93586-7343-45bd-802b-03adbb46f430 ro quiet splash vt.handoff=7
  ProcCmdline: /sbin/plymouthd --mode=boot --attach-to-session
  ProcEnviron: PATH=(custom, no user)
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-14-generic root=UUID=0bb93586-7343-45bd-802b-03adbb46f430 ro quiet splash vt.handoff=7
  SegvAnalysis:
   Segfault happened at: 0x7effe6b50ea0 <script_obj_deref_direct>:	cmpl   $0x1,(%rdi)
   PC (0x7effe6b50ea0) 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 /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_update_status () from /lib/plymouth/script.so
   ?? ()
  TextPlymouth: /lib/plymouth/themes/xubuntu-text/xubuntu-text.plymouth
  Title: plymouthd crashed with SIGSEGV in script_obj_deref_direct()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  dmi.bios.date: 04/19/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: A93F1022
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: AHD1S
  dmi.board.vendor: Foxconn
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrA93F1022:bd04/19/2011:svnFoxconn:pnAMDHDZS01:pvrTobefilledbyO.E.M.:rvnFoxconn:rnAHD1S:rvr:
  dmi.product.name: AMD HDZS01
  dmi.product.version: To be filled by O.E.M.
  dmi.sys.vendor: Foxconn

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