transmission-gtk crashed with SIGSEGV in tr_torrentInfo()

[Alban]

When adding a new torrent to download to an unmounted location.

ProblemType: Crash
DistroRelease: Ubuntu 15.04
Package: transmission-gtk 2.84-0.2ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-14.14-generic 3.19.3
Uname: Linux 3.19.0-14-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.17.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Apr 21 02:52:02 2015
ExecutablePath: /usr/bin/transmission-gtk
InstallationDate: Installed on 2014-11-18 (153 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
ProcCmdline: transmission-gtk
SegvAnalysis:
 Segfault happened at: 0x7ff94c4d3bd7 <tr_torrentInfo+7>: cmpl $0x1753d,0xb8(%rdi)
 PC (0x7ff94c4d3bd7) ok
 source "$0x1753d" ok
 destination "0xb8(%rdi)" (0x2ba058fb3c24ed65) not located in a known VMA region (needed writable region)!
 Stack memory exhausted (SP below stack segment)
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: transmission
StacktraceTop:
 tr_torrentInfo ()
 tr_cpMissingBlocksInPiece ()
 ?? ()
 ?? ()
 ?? ()
Title: transmission-gtk crashed with SIGSEGV in tr_torrentInfo()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin mythtv plugdev sambashare sudo

[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 #1222782, 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.