Mono segfaults in dbus_pending_call_get_completed()

[Andrew Mitchell]

gdb backtrace:

(gdb) bt full
#0 0xb6410ecd in dbus_pending_call_get_completed ()
   from /usr/lib/libdbus-1.so.3
No symbol table info available.
#1 0xb6403d3f in dbus_connection_flush () from /usr/lib/libdbus-1.so.3
No symbol table info available.
#2 0xb64111fd in dbus_pending_call_block () from /usr/lib/libdbus-1.so.3
No symbol table info available.
#3 0xb6404299 in dbus_connection_send_with_reply_and_block ()
   from /usr/lib/libdbus-1.so.3
No symbol table info available.
#4 0xb2c84ac9 in libhal_find_device_by_capability () from /usr/lib/libhal.so.1
No symbol table info available.
#5 0xb3123d27 in gp_port_library_list ()
   from /usr/lib/libgphoto2_port/0.6.1/disk.so
No symbol table info available.
#6 0xb2e93081 in gp_port_info_list_load () from /usr/lib/libgphoto2_port.so.0
No symbol table info available.
#7 0xb2e98538 in gp_port_result_as_string ()
   from /usr/lib/libgphoto2_port.so.0
No symbol table info available.
#8 0xb2e980b2 in gp_port_result_as_string ()
   from /usr/lib/libgphoto2_port.so.0
No symbol table info available.
---Type <return> to continue, or q <return> to quit---

[Andrew Mitchell (ajmitch)]

F-Spot appears to crash on selecting the camera in the import dialog, giving a backtrace of:

=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================

Stacktrace:

  at (wrapper managed-to-native) LibGPhoto2.PortInfoList.gp_port_info_list_load (System.Runtime.InteropServices.HandleRef) <0x00012>
  at (wrapper managed-to-native) LibGPhoto2.PortInfoList.gp_port_info_list_load (System.Runtime.InteropServices.HandleRef) <0xffffffff>
  at LibGPhoto2.PortInfoList.Load () <0x00037>
  at GPhotoCamera..ctor () <0x0005c>
  at SourceMenu..ctor (ImportCommand) <0x004ec>
  at ImportCommand.ImportFromFile (PhotoStore,string) <0x00231>
  at MainWindow.HandleImportCommand (object,System.EventArgs) <0x00080>
  at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void_object_EventArgs (object,System.EventArgs) <0xffffffff>
  at GLib.Signal.voidObjectCallback (intptr,intptr) <0x000d4>
  at (wrapper native-to-managed) GLib.Signal.voidObjectCallback (intptr,intptr) <0xffffffff>
  at (wrapper managed-to-native) Gtk.Application.gtk_main () <0x0000b>
  at (wrapper managed-to-native) Gtk.Application.gtk_main () <0xffffffff>
  at Gtk.Application.Run () <0x00008>
  at Gnome.Program.Run () <0x0000c>
  at FSpot.Driver.Main (string[]) <0x0086e>
  at (wrapper runtime-invoke) System.Object.runtime_invoke_void_string[] (object,intptr,intptr,intptr) <0xffffffff>

Native stacktrace:

        mono(mono_handle_native_sigsegv+0xe2) [0x502932]
        mono [0x4d03dd]
        /lib/libpthread.so.0 [0x2aafecd8c2a0]
        /usr/lib/libdbus-1.so.3(dbus_pending_call_get_completed+0x11) [0x2aaaabada961]
        /usr/lib/libdbus-1.so.3 [0x2aaaabace8b6]
        /usr/lib/libdbus-1.so.3(dbus_connection_send_with_reply_and_block+0x73) [0x2aaaabacee13]
        /usr/lib/libhal.so.1(libhal_find_device_by_capability+0xc0) [0x2aaab5a6ec20]
        /usr/lib/libgphoto2_port/0.6.1/disk.so(gp_port_library_list+0xc0) [0x2aaab59510a0]
        /usr/lib/libgphoto2_port.so.0 [0x2aaab56e4b11]
        /usr/lib/libgphoto2_port.so.0 [0x2aaab56e9696]
        /usr/lib/libgphoto2_port.so.0 [0x2aaab56e923e]
        /usr/lib/libgphoto2_port.so.0(gp_port_info_list_load+0x7d) [0x2aaab56e49dd]
        [0x406efb98]

[Andrew Mitchell (ajmitch)]

Rebuilding libgphoto2 without hal support (dropping libhal-dev build dependency) works around this issue - apparantly the code in libgphoto2 isn't particularly well tested & may be broken.

[Andrew Mitchell (ajmitch)]

Uploaded libgphoto2 2.2.1-2ubuntu3 without libhal-dev build-dependency