This is happening to me on Xenial, crash in the same function when selecting Google Chrome from the default application list after selecting another item first (since it is currently the default when the dialog opens)
This occurred on a fresh install, seemingly after telling Chrome "yes" to setting itself as default. We can see that mime_types = g_app_info_get_supported_types (info) returns NULL but there is no check for this condition. Upstream patch d9f08df39cafbd1f15c510da444f8ac913cdc493 introduces a NULL check and fixes this issue. Thread 1 "unity-control-c" received signal SIGSEGV, Segmentation fault. default_app_changed (button=<optimised out>, self=<optimised out>) at cc-info-panel.c:816 816 for (i = 0; mime_types[i]; i++) (gdb) bt #0 default_app_changed (button=<optimised out>, self=<optimised out>) at cc-info-panel.c:816 <truncated> #32 0x0000000000407503 in main (argc=1, argv=0x7fffffffdee8) at control-center.c:317 (gdb) l 814 mime_types = g_app_info_get_supported_types (info); 815 816 for (i = 0; mime_types[i]; i++) (gdb) print mime_types $1 = (const char * const *) 0x0 >From d9f08df39cafbd1f15c510da444f8ac913cdc493 Mon Sep 17 00:00:00 2001 From: Bastien Nocera <[email protected]> Date: Wed, 18 Feb 2015 10:10:08 +0100 Subject: [PATCH] info: Fix crash when application supports no mime-type It seems to be possible for Firefox Nightly to set itself up as the default x-scheme-handler/http without actually handling any mime-types. See https://bugzilla.redhat.com/show_bug.cgi?id=1193680 https://bugzilla.gnome.org/show_bug.cgi?id=744695 --- panels/info/cc-info-panel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/panels/info/cc-info-panel.c b/panels/info/cc-info-panel.c index 86513a4..ad89d54 100644 --- a/panels/info/cc-info-panel.c +++ b/panels/info/cc-info-panel.c @@ -854,7 +854,7 @@ default_app_changed (GtkAppChooserButton *button, pattern = g_pattern_spec_new (app_data->extra_type_filter); mime_types = g_app_info_get_supported_types (info); - for (i = 0; mime_types[i]; i++) + for (i = 0; mime_types && mime_types[i]; i++) { if (!g_pattern_match_string (pattern, mime_types[i])) continue; -- 2.7.4 ** Bug watch added: Red Hat Bugzilla #1193680 https://bugzilla.redhat.com/show_bug.cgi?id=1193680 ** Bug watch added: GNOME Bug Tracker #744695 https://bugzilla.gnome.org/show_bug.cgi?id=744695 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to unity-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1304388 Title: unity-control-center crashed with SIGSEGV in default_app_changed() Status in unity-control-center package in Ubuntu: Confirmed Bug description: Crash report and bug appeared straight after boot, cause unknown, though system went on to run normally after. Ubuntu 14.04 Beta 2 ProblemType: Crash DistroRelease: Ubuntu 14.04 Package: unity-control-center 14.04.3+14.04.20140407-0ubuntu1 ProcVersionSignature: Ubuntu 3.13.0-23.45-generic 3.13.8 Uname: Linux 3.13.0-23-generic i686 ApportVersion: 2.14.1-0ubuntu1 Architecture: i386 CurrentDesktop: Unity Date: Tue Apr 8 13:25:48 2014 ExecutablePath: /usr/bin/unity-control-center ProcCmdline: unity-control-center ProcEnviron: PATH=(custom, no user) LANGUAGE=en_GB:en XDG_RUNTIME_DIR=<set> LANG=en_GB.UTF-8 SHELL=/bin/bash SegvAnalysis: Segfault happened at: 0xac26dcbd: mov (%eax),%ecx PC (0xac26dcbd) ok source "(%eax)" (0x00000000) not located in a known VMA region (needed readable region)! destination "%ecx" ok SegvReason: reading NULL VMA Signal: 11 SourcePackage: unity-control-center StacktraceTop: ?? () from /usr/lib/i386-linux-gnu/unity-control-center-1/panels/libinfo.so g_cclosure_marshal_VOID__VOID () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0 g_closure_invoke () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0 ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0 g_signal_emit_valist () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0 Title: unity-control-center crashed with SIGSEGV in g_cclosure_marshal_VOID__VOID() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo usr_lib_unity-control-center: deja-dup 30.0-0ubuntu4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-control-center/+bug/1304388/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
