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[Bug 1263257] [NEW] "Disks" formatted mounted disk ext4->NTFS without unmount, resulting in kernel panic

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1263257@xxxxxxxxxxxxxxxxxx>
Date: Fri, 09 Oct 2015 07:43:56 -0000
Reply-to: Bug 1263257 <1263257@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

You have been subscribed to a public bug:

gnome-disk-utility "Disks", version 3.6.1-1ubuntu1

System in question:
   uname -a = 'Linux scorpio 3.8.0-19-generic #29-Ubuntu SMP Wed Apr 17 18:16:28 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux'
   lsb_release -a = 'Distributor ID:	LinuxMint
                                 Description:	Linux Mint 15 Olivia
                                 Release:	15
                                 Codename:	olivia'
   (This is Linux Mint 15 MATE edition)
   lsblk = 'NAME    MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINT
                sda       8:0    0 298.1G  0 disk
               ├─sda1    8:1    0  15.3G  0 part  /
               ├─sda2    8:2    0   2.8G  0 part  [SWAP]
               ├─sda3    8:3    0  15.6G  0 part
               ├─sda4    8:4    0   7.9M  0 part
               └─sda5    8:5    0 264.5G  0 part  /home
                sdb       8:16   0 465.8G  0 disk
               └─sdb1    8:17   0 465.8G  0 part
               └─md0   9:0    0 465.7G  0 raid1
                sdc       8:32   0 698.7G  0 disk
               ├─sdc1    8:33   0 465.8G  0 part
               │ └─md0   9:0    0 465.7G  0 raid1
               └─sdc2    8:34   0 232.9G  0 part  /media/ed/Spare
                sdd       8:48   1   7.9G  0 disk
               └─sdd1    8:49   1   7.9G  0 part  /media/ed/MEMSTICK

Attempted to format partition in question (/dev/sdc2, /dev/sdb2 before
reboot) from ext4 to NTFS, failed to unmount partition beforehand.
Admittably a failure in proper user policy; but a frontend graphical
program like "Disks" should know better than to have actually tried to
preform said operation without doing an unmount first. Result was a
partition which read 16EB (exabyte) ext3/ext4 in caja shell properties
window. Attempt to unmount via caja shell resulted in kernel panic :(

Clearly this is a very serious issue; anybody working on disk partioning
could potentially make this mistake. Terminal format utilites would
actually complain about mounted partitions-- the fact the "Disks" was
able to format an in-use, mounted partition is very worrying.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

-- 
"Disks" formatted mounted disk ext4->NTFS without unmount, resulting in kernel panic
https://bugs.launchpad.net/bugs/1263257
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