plymouthd crashed with SIGSEGV in ply_list_find_node() from ply_event_loop_remove_source() from on_udev_queue_changed()

[Warren Jacques]

https://errors.ubuntu.com/problem/9f87987e780656de08b1f25032fdd6ccacba72f1

Crashed on login

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: plymouth 0.9.2-3ubuntu11
ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6
Uname: Linux 4.4.0-18-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu1
Architecture: amd64
Date: Mon Apr 11 23:25:21 2016
DefaultPlymouth: /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
ExecutablePath: /sbin/plymouthd
InstallationDate: Installed on 2015-12-15 (118 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: Apple Inc. MacBookAir6,1
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-18-generic.efi.signed root=UUID=fbd7899b-a33f-4d19-b5d6-4ab340964912 ro quiet splash vt.handoff=7
ProcCmdline: @sbin/plymouthd --mode=boot --pid-file=/run/plymouth/pid --attach-to-session
ProcEnviron:
 LANG=en_GB.UTF-8
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-18-generic.efi.signed root=UUID=fbd7899b-a33f-4d19-b5d6-4ab340964912 ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x7f39daecd4f8 <ply_list_find_node+8>: cmp (%rax),%rsi
 PC (0x7f39daecd4f8) ok
 source "(%rax)" (0xffffffff) not located in a known VMA region (needed readable region)!
 destination "%rsi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: plymouth
StacktraceTop:
 ply_list_find_node () from /lib/x86_64-linux-gnu/libply.so.4
 ?? () from /lib/x86_64-linux-gnu/libply.so.4
 ?? () from /lib/x86_64-linux-gnu/libply-splash-core.so.4
 ply_event_loop_process_pending_events () from /lib/x86_64-linux-gnu/libply.so.4
 ply_event_loop_run () from /lib/x86_64-linux-gnu/libply.so.4
TextPlymouth: /usr/share/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
Title: plymouthd crashed with SIGSEGV in ply_list_find_node()
UpgradeStatus: Upgraded to xenial on 2016-04-08 (3 days ago)
UserGroups:

dmi.bios.date: 02/22/2016
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBA61.88Z.0099.B22.1602221559
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-35C1E88140C3E6CF
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookAir6,1
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-35C1E88140C3E6CF
dmi.modalias: dmi:bvnAppleInc.:bvrMBA61.88Z.0099.B22.1602221559:bd02/22/2016:svnAppleInc.:pnMacBookAir6,1:pvr1.0:rvnAppleInc.:rnMac-35C1E88140C3E6CF:rvrMacBookAir6,1:cvnAppleInc.:ct10:cvrMac-35C1E88140C3E6CF:
dmi.product.name: MacBookAir6,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.

[Apport retracing service (apport)]

StacktraceTop:
 ply_list_find_node () from /tmp/apport_sandbox_IKNY1v/lib/x86_64-linux-gnu/libply.so.4
 ply_event_loop_remove_source () from /tmp/apport_sandbox_IKNY1v/lib/x86_64-linux-gnu/libply.so.4
 on_udev_queue_changed () from /tmp/apport_sandbox_IKNY1v/lib/x86_64-linux-gnu/libply-splash-core.so.4
 ply_event_loop_process_pending_events () from /tmp/apport_sandbox_IKNY1v/lib/x86_64-linux-gnu/libply.so.4
 ply_event_loop_run () from /tmp/apport_sandbox_IKNY1v/lib/x86_64-linux-gnu/libply.so.4

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Zero crashes in the final release of 18.04 onward. Consider it fixed.