Crashes sometimes when saving a scan

[David King]

I maintain the Simple Scan package in Fedora and a user has filed a bug report about a crash. From the downstream bug report:

I scanned in a doc from a USB connected Canon MP-830, when I went to save - click on save button - the application crashed.

Version-Release number of selected component:
simple-scan-3.10.2-1.fc20

Additional info:
reporter: libreport-2.2.0
backtrace_rating: 4
cmdline: /usr/bin/simple-scan
crash_function: gdk_property_change
executable: /usr/bin/simple-scan
kernel: 3.13.6-200.fc20.x86_64
runlevel: N 5
type: CCpp
uid: 1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 gdk_property_change at gdkwindow.c:10631
 #1 _gtk_selection_request at gtkselection.c:2453
 #2 _gtk_marshal_BOOLEAN__BOXEDv at gtkmarshalers.c:130
 #3 _g_closure_invoke_va at gclosure.c:840
 #6 gtk_widget_event_internal at gtkwidget.c:7168
 #7 gtk_widget_event at gtkwidget.c:6830
 #8 gtk_main_do_event at gtkmain.c:1657
 #14 gtk_dialog_run at gtkdialog.c:1075
 #15 user_interface_choose_file_location at /home/bob/bzr/simple-scan/3.10/src/ui.vala:453
 #16 user_interface_save_document at /home/bob/bzr/simple-scan/3.10/src/ui.vala:486

[marc (marc-redhat-bugs)]

Description of problem:
I scanned in a doc from a USB connected Canon MP-830, when I went to save - click on save button - the application crashed.

Version-Release number of selected component:
simple-scan-3.10.2-1.fc20

Additional info:
reporter: libreport-2.2.0
backtrace_rating: 4
cmdline: /usr/bin/simple-scan
crash_function: gdk_property_change
executable: /usr/bin/simple-scan
kernel: 3.13.6-200.fc20.x86_64
runlevel: N 5
type: CCpp
uid: 1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 gdk_property_change at gdkwindow.c:10631
 #1 _gtk_selection_request at gtkselection.c:2453
 #2 _gtk_marshal_BOOLEAN__BOXEDv at gtkmarshalers.c:130
 #3 _g_closure_invoke_va at gclosure.c:840
 #6 gtk_widget_event_internal at gtkwidget.c:7168
 #7 gtk_widget_event at gtkwidget.c:6830
 #8 gtk_main_do_event at gtkmain.c:1657
 #14 gtk_dialog_run at gtkdialog.c:1075
 #15 user_interface_choose_file_location at /home/bob/bzr/simple-scan/3.10/src/ui.vala:453
 #16 user_interface_save_document at /home/bob/bzr/simple-scan/3.10/src/ui.vala:486

[marc (marc-redhat-bugs)]

Created attachment 883639
File: backtrace

[marc (marc-redhat-bugs)]

Created attachment 883640
File: cgroup

[marc (marc-redhat-bugs)]

Created attachment 883641
File: core_backtrace

[marc (marc-redhat-bugs)]

Created attachment 883642
File: dso_list

[marc (marc-redhat-bugs)]

Created attachment 883643
File: environ

[marc (marc-redhat-bugs)]

Created attachment 883644
File: exploitable

[marc (marc-redhat-bugs)]

Created attachment 883645
File: limits

[marc (marc-redhat-bugs)]

Created attachment 883646
File: maps

[marc (marc-redhat-bugs)]

Created attachment 883647
File: open_fds

[marc (marc-redhat-bugs)]

Created attachment 883648
File: proc_pid_status

[marc (marc-redhat-bugs)]

Created attachment 883649
File: var_log_messages

[David (david-redhat-bugs)]

Can you reproduce this every time you try to save a scan? Did you select an image format in the save dialogue, or did you keep the default?

[marc (marc-redhat-bugs)]

it crashed on me 2-3 times over the last 2 weeks, when i would scan and then click on the save button. i just did a yum update and am not sure if simple-scan was updated, but know after the bugzilla update and your request - i have now scanned in 3 items and saved them with no issues.

thanks.

[David (david-redhat-bugs)]

I have filed an upstream bug about the crash:

https://bugs.launchpad.net/simple-scan/+bug/1303887

Could you please attach a debug log at Launchpad (or attach it here, and I can forward it), which you can get from running:

simple-scan --debug > simple-scan.log 2>&1

in a terminal? Unfortunately, as the bug is not easy to reproduce, I would ask that you start Simple Scan with that command until you can trigger a crash.

Simple Scan 3.10.2 was pushed to updates in Fedora 20 a few weeks ago:

https://admin.fedoraproject.org/updates/FEDORA-2014-3721/simple-scan-3.10.2-1.fc20

The autosaving feature was rewritten, so this crash could potentially be related.

[marc (marc-redhat-bugs)]

this appears to be fixed - i have tested and the saving feature is now workign for me in version:

simple-scan-3.10.3-1.fc20.x86_64

[David (david-redhat-bugs)]

Thanks for testing the latest version. The changes in 3.10.3 touched some file saving code, so maybe that fixed this bug as a side effect.

[David King (amigadave)]

The original reporter mentioned in the downstream bug report that they could not reproduce the bug with 3.10.3.