Arch Linux

Description:
gsf-office-thumbnailer leaves files in /tmp (due to crashes?) when ran by gjs-console.
Since gjs-console is a daemon started by gnome on login, this completely fills all space in my /tmp mount.
Not sure whether this is arch specific or upstream, so i'm first reporting here to get some more insights.

My /tmp folder after a few minutes of normal usage:
> ls -lh /tmp
-rw------- 1 gerlof gerlof 48M Mar 14 21:24 /tmp/magick-22873hunCLjOUTMPY
-rw------- 1 gerlof gerlof 48M Mar 14 21:24 /tmp/magick-22873XuUHhKbz0vvq
-rw------- 1 gerlof gerlof 48M Mar 14 21:24 /tmp/magick-22906wEpu3Y1OXbqd
-rw------- 1 gerlof gerlof 48M Mar 14 21:24 /tmp/magick-22906zASiWsZjxiJS
-rw------- 1 gerlof gerlof 48M Mar 14 21:34 /tmp/magick-23783M2ej671S4ane
-rw------- 1 gerlof gerlof 48M Mar 14 21:34 /tmp/magick-2378472WrT5uczt9a
-rw------- 1 gerlof gerlof 48M Mar 14 21:34 /tmp/magick-23785VQQ1KsJUQDUb
-rw------- 1 gerlof gerlof 48M Mar 14 21:34 /tmp/magick-23814JGMOYQsaHc3y
-rw------- 1 gerlof gerlof 48M Mar 14 21:34 /tmp/magick-23814Uy97bUgg8Rv0

Identifying the culprit:
while true; do sleep .5; for pid in $(sudo lsof +D /tmp | tee log.txt | grep magick | awk -F' ' '{ print $2 }'); do ps auxf | grep -C 5 $pid; done; done

Led to the process tree:
The following line leads
gerlof 22079 12.6 0.9 1400340 75792 ? Sl 21:21 0:00 \_ /usr/bin/gjs-console /usr/bin/gnome-documents --gapplication-service
gerlof 22203 0.0 0.0 61352 5316 ? S 21:21 0:00 | \_ gsf-office-thumbnailer -i /home/gerlof/Downloads/Training Reseller - PI 2014 versie 3.2.ppt -o /tmp/.gnome_desktop_thumbnail.KE00WY -s 256
gerlof 22207 93.4 0.9 214316 73312 ? Rl 21:21 0:04 | \_ convert /tmp/gsf-thumbnailer-AP11WY +matte -thumbnail 256x256 png:/tmp/.gnome_desktop_thumbnail.KE00WY

When running the gsf-office-thumbnailer directly:
> gsf-office-thumbnailer -i '/home/gerlof/Downloads/Training Reseller - PI 2014 versie 3.2.ppt' -o /tmp/.gnome_desktop_thumbnail.KE00WY -s 256
calling convert '/tmp/gsf-thumbnailer-18N7WY' +matte -thumbnail 256x256 png:'/tmp/.gnome_desktop_thumbnail.KE00WY'

(gsf-office-thumbnailer:24267): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed



Additional info:
* package version(s)
extra/libgsf 1.14.40-1
extra/imagemagick 6.9.8.0-1
* config and/or log files etc.
no logs, only output from bash hackery like above

Steps to reproduce:
Install gnome-extra and imagemagick, put a .ppt file in your home directory.
Use the meta key to bring up the gnome overlay window, this should start file indexing and trigger a crash of gsf-office-thumbnailer.