[bionic] gnome-disks crashed when reformatting FAT partition with SIGSEGV in udisks_partition_table_get_type_()

[Trent Lloyd]

This crash is reproducible with bionic updated as of today and with -proposed

(1) Open disks
(2) Select my 8GB usb disk with a FAT partition existing
(3) Select the FAT partition, format partition, as FAT, label "test" - everything else defaults.
(4) Hit next, then hit the "Format" button, crashed immediately on clicking Format

[disk was automounted at the time]

If not reproducible feel free to close due to bionic-proposed

[ 447.975024] gnome-disks[13303]: segfault at 0 ip 00007f04e2df66a9 sp 00007ffcd3b88ea0 error 4 in libudisks2.so.0.0.0[7f04e2dc1000+69000]

lathiat@ubuntu:~$ sudo sfdisk -l /dev/sde
Disk /dev/sde: 7.5 GiB, 8004304896 bytes, 15633408 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00000000

Device Boot Start End Sectors Size Id Type
/dev/sde1 2 15633407 15633406 7.5G b W95 FAT32

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: gnome-disk-utility 3.27.92-0ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-11.12-generic 4.15.5
Uname: Linux 4.15.0-11-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CurrentDesktop: GNOME
Date: Thu Mar 8 10:45:28 2018
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/gnome-disks
ProcCmdline: /usr/bin/gnome-disks --gapplication-service
ProcEnviron:
 XDG_RUNTIME_DIR=<set>
 SHELL=/bin/bash
 LANGUAGE=en_AU:en
 PATH=(custom, user)
 LANG=en_AU.UTF-8
SegvAnalysis:
 Segfault happened at: 0x7f4053fcd6a9 <udisks_partition_table_get_type_+9>: mov (%rbx),%rdi
 PC (0x7f4053fcd6a9) ok
 source "(%rbx)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%rdi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gnome-disk-utility
StacktraceTop:
 udisks_partition_table_get_type_ () at /usr/lib/x86_64-linux-gnu/libudisks2.so.0
 finish_cb ()
 <emit signal ??? on instance 0x5589a7c45340 [GtkButton] or 0x5589a7f09170 [GtkDialog]> (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at ../../../../gobject/gsignal.c:3447
 () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
Title: gnome-disks crashed with SIGSEGV in udisks_partition_table_get_type_()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dialout dip libvirt lxd plugdev sbuild sudo wireshark

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1750289, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.