[Bug 1794292] Re: plymouthd crashed with SIGSEGV in /sbin/plymouthd:11 in ply_renderer_set_handler_for_input_source -> ply_keyboard_stop_watching_for_renderer_input -> ply_keyboard_stop_watching_for_input -> ply_device_manager_deactivate_keyboards -> on_deactivate

[Kevin Torkelson]

Hello!

I've been having these crashes on two laptops nearly every reboot.  I
installed plymouth 0.9.3-1ubuntu10.1 from the -proposed repository on a
fairly recently installed version 18.10 (cosmic) which contains no other
proposed updates.  So far, after rebooting many times, I'm happy to
report that I am not seeing the error.

Thanks to everyone who has been looking into this.

Kevin

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Title:
  plymouthd crashed with SIGSEGV in /sbin/plymouthd:11 in
  ply_renderer_set_handler_for_input_source ->
  ply_keyboard_stop_watching_for_renderer_input ->
  ply_keyboard_stop_watching_for_input ->
  ply_device_manager_deactivate_keyboards -> on_deactivate

Status in plymouth package in Ubuntu:
  Fix Released
Status in plymouth source package in Bionic:
  Triaged
Status in plymouth source package in Cosmic:
  Fix Committed

Bug description:
  [Impact]
  plymouth has been crashing a whole bunch and notifying users about it.

  [Test Case]
  We don't have a specific test case but luckily :-( there are thousands of crashes in the Error Tracker about this issue. Subsequently, it should be enough to verify that the new version of plymouth doesn't appear in the following bucket:

  https://errors.ubuntu.com/problem/6aa06f1bc51946c787a01d38e58bc76114555334

  [Regression Potential]
  The fix has to do with keyboard handling so a possible regression would be the inability to unlock your disks.

  Original Description
  --------------------
  A green Xubuntu splash screen with a spinning circle normally appears on boot up.

  Now just a blank black screen shows until the login box appears. On
  logging in, the desktop appears as normal but an error message pops up
  offering to report a bug to developers.

  Description:	Ubuntu Cosmic Cuttlefish (development branch)
  Release:	18.10

  All packages up-to-date as of 25 September 2018 14:00 BST

  Errors Tracker:
  https://errors.ubuntu.com/problem/6aa06f1bc51946c787a01d38e58bc76114555334

  ProblemType: CrashDistroRelease: Ubuntu 18.10
  Package: plymouth 0.9.3-1ubuntu8
  ProcVersionSignature: Ubuntu 4.18.0-7.8-generic 4.18.5
  Uname: Linux 4.18.0-7-generic x86_64
  ApportVersion: 2.20.10-0ubuntu11
  Architecture: amd64
  CrashCounter: 1
  Date: Tue Sep 25 13:47:47 2018
  DefaultPlymouth: /usr/share/plymouth/themes/xubuntu-logo/xubuntu-logo.plymouth
  ExecutablePath: /sbin/plymouthd
  MachineType: Acer Veriton N280G
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-7-generic root=UUID=ff708f10-3fbc-4fa2-b7a5-93f0dd61eb21 ro splash quiet vt.handoff=1
  ProcCmdline: @sbin/plymouthd --mode=boot --pid-file=/run/plymouth/pid --attach-to-session
  ProcEnviron:
   LANG=en_GB.UTF-8
   PATH=(custom, no user)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-7-generic root=UUID=ff708f10-3fbc-4fa2-b7a5-93f0dd61eb21 ro splash quiet vt.handoff=1
  SegvAnalysis:
   Segfault happened at: 0x7f05452a07f9 <ply_renderer_set_handler_for_input_source+25>:	mov    0x78(%rax),%rax
   PC (0x7f05452a07f9) ok
   source "0x78(%rax)" (0x00000078) not located in a known VMA region (needed readable region)!
   destination "%rax" ok
  SegvReason: reading NULL VMA
  Signal: 11SourcePackage: plymouth
  StacktraceTop:
   ply_renderer_set_handler_for_input_source () from /lib/x86_64-linux-gnu/libply-splash-core.so.4
   ply_keyboard_stop_watching_for_input () from /lib/x86_64-linux-gnu/libply-splash-core.so.4
   ply_device_manager_deactivate_keyboards () from /lib/x86_64-linux-gnu/libply-splash-core.so.4
   ?? ()
   ?? ()
  TextPlymouth: /usr/share/plymouth/themes/xubuntu-text/xubuntu-text.plymouth
  Title: plymouthd crashed with SIGSEGV in ply_renderer_set_handler_for_input_source()
  UpgradeStatus: Upgraded to cosmic on 2018-08-21 (34 days ago)
  UserGroups:

  dmi.bios.date: 01/15/2011
  dmi.bios.vendor: Acer
  dmi.bios.version: P01-A3
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: TPDS03
  dmi.board.vendor: Acer
  dmi.board.version: To be filled by O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Acer
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAcer:bvrP01-A3:bd01/15/2011:svnAcer:pnVeritonN280G:pvrToBeFilledByO.E.M.:rvnAcer:rnTPDS03:rvrTobefilledbyO.E.M.:cvnAcer:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.family: Acer Desktop
  dmi.product.name: Veriton N280G
  dmi.product.sku: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: Acer

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