This bug was fixed in the package udisks2 - 2.7.6-2ubuntu6

---------------
udisks2 (2.7.6-2ubuntu6) bionic; urgency=medium

  * debian/patches/remove_sigint_source.patch:
    - backport a segfault fix from an upstream PR, thanks andyrock!
      (lp: #1707451)

 -- Sebastien Bacher <seb...@ubuntu.com>  Wed, 04 Apr 2018 09:39:45
+0200

** Changed in: udisks2 (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1707451

Title:
  udisksd crashed with SIGSEGV in g_mutex_lock()

Status in udisks:
  New
Status in glib package in Ubuntu:
  Confirmed
Status in udisks2 package in Ubuntu:
  Fix Released

Bug description:
  Showed up after login

  ProblemType: Crash
  DistroRelease: Ubuntu 17.10
  Package: udisks2 2.6.5-2ubuntu1
  ProcVersionSignature: Ubuntu 4.11.0-10.15-generic 4.11.8
  Uname: Linux 4.11.0-10-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.6-0ubuntu4
  Architecture: amd64
  Date: Sun Jul 30 00:35:31 2017
  ExecutablePath: /usr/lib/udisks2/udisksd
  InstallationDate: Installed on 2017-06-22 (37 days ago)
  InstallationMedia: Ubuntu-GNOME 17.10 "Artful Aardvark" - Alpha amd64 
(20170622)
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  ProcCmdline: /usr/lib/udisks2/udisksd
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.11.0-10-generic.efi.signed 
root=UUID=44b31662-d2ab-443b-9546-86d022d8de0d ro quiet splash vt.handoff=7
  SegvAnalysis:
   Segfault happened at: 0x7f4900fb5c65 <g_mutex_lock+5>:       lock xadd 
%eax,(%rdi)
   PC (0x7f4900fb5c65) ok
   source "%eax" ok
   destination "(%rdi)" (0x3a9d80e262617474) not located in a known VMA region 
(needed writable region)!
  SegvReason: writing unknown VMA
  Signal: 11
  SourcePackage: udisks2
  StacktraceTop:
   g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   main ()
  Title: udisksd crashed with SIGSEGV in g_mutex_lock()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  dmi.bios.date: 04/12/2016
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P3.40
  dmi.board.name: Z87 Extreme4
  dmi.board.vendor: ASRock
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrP3.40:bd04/12/2016:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnZ87Extreme4:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.

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