[Pkg-xfce-devel] Bug#800723: intermittent segfault on file drag and drop

Ben Caradoc-Davies ben at transient.nz
Fri Oct 2 23:11:30 UTC 2015

Package: thunar
Version: 1.6.10-2
Severity: important

Dear Maintainer,

thunar often segfaults when dragging and dropping files to a different folder.
Segfaults observed on a single local filesystem. When dragging between thunar
processes, the segfault occurs in the destination process. Segfaults also
observed dragging and dropping in a single thunar window (dragging to a parent
directory). File move is successful before the crash.

(thunar:2619): GLib-GObject-WARNING **: invalid unclassed pointer in cast to
(thunar:2619): GLib-GObject-CRITICAL **: g_object_set_qdata: assertion
'G_IS_OBJECT (object)' failed
Segmentation fault

Installing thunar-dbg and running in gdb reveals heap corruption:

(thunar:3549): GLib-GObject-WARNING **: invalid uninstantiatable type '(null)'
in cast to 'GObject'
(thunar:3549): GLib-GObject-CRITICAL **: g_object_set_qdata: assertion
'G_IS_OBJECT (object)' failed
(thunar:3549): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT
(object)' failed
*** Error in `/usr/bin/thunar': malloc(): smallbin double linked list
corrupted: 0x00005555559cc0b0 ***
Program received signal SIGABRT, Aborted.
0x00007ffff4581107 in __GI_raise (sig=sig at entry=6)
    at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
56      ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.

Kind regards,

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.2.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages thunar depends on:
ii  desktop-file-utils  0.22-1
ii  exo-utils           0.10.7-1
ii  libatk1.0-0         2.18.0-1
ii  libc6               2.19-22
ii  libcairo2           1.14.2-2
ii  libdbus-1-3         1.10.0-3
ii  libdbus-glib-1-2    0.102-1
ii  libexo-1-0          0.10.7-1
ii  libgdk-pixbuf2.0-0  2.32.0-1
ii  libglib2.0-0        2.46.0-2
ii  libgtk2.0-0         2.24.28-1
ii  libgudev-1.0-0      230-2
ii  libice6             2:1.0.9-1+b1
ii  libnotify4          0.7.6-2
ii  libpango-1.0-0      1.38.0-3
ii  libsm6              2:1.2.2-1+b1
ii  libthunarx-2-0      1.6.10-2
ii  libxfce4ui-1-0      4.12.1-2
ii  libxfce4util7       4.12.1-2
ii  libxfconf-0-2       4.12.0-2+b1
ii  shared-mime-info    1.5-2
ii  thunar-data         1.6.10-2

Versions of packages thunar recommends:
ii  dbus-x11             1.10.0-3
ii  gvfs                 1.26.0-2
ii  libfontconfig1       2.11.0-6.3
ii  libfreetype6         2.6-2
ii  libpangocairo-1.0-0  1.38.0-3
ii  libpangoft2-1.0-0    1.38.0-3
ii  thunar-volman        0.8.1-2
ii  tumbler              0.1.31-2+b1
ii  xdg-user-dirs        0.15-2
ii  xfce4-panel          4.12.0-3

Versions of packages thunar suggests:
ii  thunar-archive-plugin     0.3.1-4
ii  thunar-media-tags-plugin  0.2.1-1+b2

-- no debconf information

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