udisksd crashed with SIGSEGV in handle_mount()

[Wade Menard]

1. I set manual mount options for a partition in the Disks app (updating /etc/fstab).
2. I then deleted the partition in Disks and created a new one. This did not remove the original fstab entry.
3. Setting manual mount options for the new partition with the same mountpoint created a second fstab entry with a different /dev/disk/by-uuid.
4. The crash was triggered when clicking mount in Disks.
5. After deleting the old mount line in /etc/fstab, the mount button in Disks worked as expected without crashing.

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: udisks2 2.7.6-2ubuntu4
ProcVersionSignature: Ubuntu 4.15.0-12.13-generic 4.15.7
Uname: Linux 4.15.0-12-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CustomUdevRuleFiles: 60-vboxdrv.rules 70-snap.core.rules
Date: Fri Mar 23 09:05:53 2018
ExecutablePath: /usr/lib/udisks2/udisksd
InstallationDate: Installed on 2018-03-22 (0 days ago)
InstallationMedia: Ubuntu-MATE 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180322)
MachineType: MSI MS-7924
ProcCmdline: /usr/lib/udisks2/udisksd
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-12-generic.efi.signed root=UUID=7163a03d-e388-4431-9fe2-157e35a52c0d ro quiet splash vt.handoff=1
SegvAnalysis:
 Segfault happened at: 0x561008f69b60: mov 0x8(%rax),%rbp
 PC (0x561008f69b60) ok
 source "0x8(%rax)" (0x00000008) not located in a known VMA region (needed readable region)!
 destination "%rbp" ok
 Stack memory exhausted (SP below stack segment)
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: udisks2
StacktraceTop:
 ?? ()
 ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
 ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
 g_cclosure_marshal_generic () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: udisksd crashed with SIGSEGV in ffi_call_unix64()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

dmi.bios.date: 02/15/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V1.12
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z97M-G43(MS-7924)
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.:bvrV1.12:bd02/15/2016:svnMSI:pnMS-7924:pvr1.0:rvnMSI:rnZ97M-G43(MS-7924):rvr1.0:cvnMSI:ct3:cvr1.0:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: MS-7924
dmi.product.version: 1.0
dmi.sys.vendor: MSI

[Apport retracing service (apport)]

StacktraceTop:
 handle_mount (filesystem=0x561009e74e00, invocation=0x7f800400b500, options=0x561009f49010) at udiskslinuxfilesystem.c:1447
 ffi_call_unix64 () at ../src/x86/unix64.S:76
 ffi_call (cif=cif@entry=0x7f7ffd7c5870, fn=fn@entry=0x561008f68270 <handle_mount>, rvalue=<optimized out>, avalue=avalue@entry=0x7f7ffd7c5780) at ../src/x86/ffi64.c:525
 g_cclosure_marshal_generic (closure=0x561009ebfc40, return_gvalue=0x7f7ffd7c5a40, n_param_values=<optimized out>, param_values=<optimized out>, invocation_hint=<optimized out>, marshal_data=<optimized out>) at ../../../../gobject/gclosure.c:1490
 g_closure_invoke (closure=0x561009ebfc40, return_value=0x7f7ffd7c5a40, n_param_values=3, param_values=0x7f7fe8002370, invocation_hint=0x7f7ffd7c5a20) at ../../../../gobject/gclosure.c:804