Bug 452926 – crash in Epiphany Web Browser: A better stack trace for...

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Bug 452926 - crash in Epiphany Web Browser: A better stack trace for...


Summary:	crash in Epiphany Web Browser: A better stack trace for...


Status:	RESOLVED DUPLICATE of bug 452119

Product:	epiphany-extensions
Classification:	Deprecated
Component:	adblock
Version:	2.19.x
Hardware:	Other All

Importance:	High critical
Target Milestone:	---
Assigned To:	epiphany-extensions-maint
QA Contact:	epiphany-extensions-maint

URL:
Whiteboard:

Depends on:
Blocks:

Reported:	2007-07-01 20:49 UTC by Reinout van Schouwen
Modified:	2007-07-02 11:03 UTC

See Also:
GNOME target:	---
GNOME version:	2.19/2.20

Description Reinout van Schouwen 2007-07-01 20:49:04 UTC

Version: 2.19.2

What were you doing when the application crashed?
A better stack trace for the crash that happens when one updates Filterset.G.


Distribution: Mandriva Linux release 2008.0 (Cooker) for i586
Gnome Release: 2.19.4 2007-06-17 (Mandriva)
BugBuddy Version: 2.18.1

System: Linux 2.6.17.14-mm-laptop-8mdv #1 Sun May 27 09:07:38 EDT 2007 i686
X Vendor: The X.Org Foundation
X Vendor Release: 10300000
Selinux: No
Accessibility: Disabled
GTK+ Theme: Ia Ora Free
Icon Theme: gnome

Memory status: size: 233254912 vsize: 233254912 resident: 124108800 share: 43544576 rss: 124108800 rss_rlim: 4294967295
CPU usage: start_time: 1183301229 rtime: 36809 utime: 28923 stime: 7886 cutime:0 cstime: 1 timeout: 0 it_real_value: 0 frequency: 100

Backtrace was generated from '/usr/bin/epiphany'

Using host libthread_db library "/lib/i686/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread -1232550192 (LWP 3857)]
[New Thread -1352234080 (LWP 16236)]
[New Thread -1340920928 (LWP 4228)]
[New Thread -1332528224 (LWP 4227)]
[New Thread -1262560352 (LWP 4189)]
[New Thread -1244406880 (LWP 4153)]
0xffffe410 in __kernel_vsyscall ()

+ Trace 145114

Thread 1 (Thread -1232550192 (LWP 3857))

#0 __kernel_vsyscall
#1 waitpid
from /lib/i686/libpthread.so.0
#2 libgnomeui_segv_handle
at gnome-ui-init.c line 865
#3 nsProfileLock::FatalSignalHandler
at nsProfileLock.cpp line 210
#4 <signal handler called>
#5 __cxa_pure_virtual
from /usr/lib/epiphany/2.19/extensions/libadblockextension.so
#6 __cxa_pure_virtual
from /usr/lib/epiphany/2.19/extensions/libadblockextension.so
#7 IA__g_cclosure_marshal_VOID__VOID
at gmarshal.c line 77
#8 IA__g_closure_invoke
at gclosure.c line 490
#9 signal_emit_unlocked_R
at gsignal.c line 2440
#10 IA__g_signal_emit_valist
at gsignal.c line 2199
#11 IA__g_signal_emit
at gsignal.c line 2243
#12 IA__gtk_button_clicked
at gtkbutton.c line 889
#13 gtk_real_button_released
at gtkbutton.c line 1484
#14 IA__g_cclosure_marshal_VOID__VOID
at gmarshal.c line 77
#15 g_type_class_meta_marshal
at gclosure.c line 567
#16 IA__g_closure_invoke
at gclosure.c line 490
#17 signal_emit_unlocked_R
at gsignal.c line 2370
#18 IA__g_signal_emit_valist
at gsignal.c line 2199
#19 IA__g_signal_emit
at gsignal.c line 2243
#20 IA__gtk_button_released
at gtkbutton.c line 881
#21 gtk_button_button_release
at gtkbutton.c line 1377
#22 _gtk_marshal_BOOLEAN__BOXED
at gtkmarshalers.c line 84
#23 g_type_class_meta_marshal
at gclosure.c line 567
#24 IA__g_closure_invoke
at gclosure.c line 490
#25 signal_emit_unlocked_R
at gsignal.c line 2478
#26 IA__g_signal_emit_valist
at gsignal.c line 2209
#27 IA__g_signal_emit
at gsignal.c line 2243
#28 gtk_widget_event_internal
at gtkwidget.c line 4267
#29 IA__gtk_propagate_event
at gtkmain.c line 2350
#30 IA__gtk_main_do_event
at gtkmain.c line 1570
#31 gdk_event_dispatch
at gdkevents-x11.c line 2349
#32 IA__g_main_context_dispatch
at gmain.c line 2061
#33 g_main_context_iterate
at gmain.c line 2694
#34 IA__g_main_loop_run
at gmain.c line 2898
#35 IA__gtk_main
at gtkmain.c line 1144
#36 main
at ephy-main.c line 720
#0 __kernel_vsyscall



----------- .xsession-errors ---------------------
** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
** (epiphany:3857): WARNING **: Could not get rules file from filterg site
sys:1: Warning: g_strsplit: assertion `string != NULL' failed
Cannot access memory at address 0x0
Cannot access memory at address 0x0
--------------------------------------------------

Comment 1 Reinout van Schouwen 2007-07-01 20:53:16 UTC

Note this debug line: 
** (epiphany:3857): WARNING **: Could not get rules file from filterg site

Comment 2 Reinout van Schouwen 2007-07-01 20:58:00 UTC

Now with epiphany-extensions debug symbols.

Distribution: Mandriva Linux release 2008.0 (Cooker) for i586
Gnome Release: 2.19.4 2007-06-17 (Mandriva)
BugBuddy Version: 2.18.1

System: Linux 2.6.17.14-mm-laptop-8mdv #1 Sun May 27 09:07:38 EDT 2007 i686
X Vendor: The X.Org Foundation
X Vendor Release: 10300000
Selinux: No
Accessibility: Disabled
GTK+ Theme: Ia Ora Free
Icon Theme: gnome

Memory status: size: 203079680 vsize: 203079680 resident: 80244736 share: 37314560 rss: 80244736 rss_rlim: 4294967295
CPU usage: start_time: 1183322983 rtime: 903 utime: 863 stime: 40 cutime:0 cstime: 0 timeout: 0 it_real_value: 0 frequency: 100

Backtrace was generated from '/usr/bin/epiphany'

Using host libthread_db library "/lib/i686/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread -1231690032 (LWP 16604)]
[New Thread -1314485344 (LWP 16610)]
[New Thread -1306092640 (LWP 16609)]
[New Thread -1261565024 (LWP 16606)]
[New Thread -1243546720 (LWP 16605)]
0xffffe410 in __kernel_vsyscall ()

+ Trace 145117

Thread 1 (Thread -1231690032 (LWP 16604))

#0 __kernel_vsyscall
#1 waitpid
from /lib/i686/libpthread.so.0
#2 libgnomeui_segv_handle
at gnome-ui-init.c line 865
#3 nsProfileLock::FatalSignalHandler
at nsProfileLock.cpp line 210
#4 <signal handler called>
#5 adblock_pattern_get_filtersetg_patterns
at adblock-pattern.c line 190
#6 adblock_ui_load_cb
at adblock-ui.c line 329
#7 IA__g_cclosure_marshal_VOID__VOID
at gmarshal.c line 77
#8 IA__g_closure_invoke
at gclosure.c line 490
#9 signal_emit_unlocked_R
at gsignal.c line 2440
#10 IA__g_signal_emit_valist
at gsignal.c line 2199
#11 IA__g_signal_emit
at gsignal.c line 2243
#12 IA__gtk_button_clicked
at gtkbutton.c line 889
#13 gtk_real_button_released
at gtkbutton.c line 1484
#14 IA__g_cclosure_marshal_VOID__VOID
at gmarshal.c line 77
#15 g_type_class_meta_marshal
at gclosure.c line 567
#16 IA__g_closure_invoke
at gclosure.c line 490
#17 signal_emit_unlocked_R
at gsignal.c line 2370
#18 IA__g_signal_emit_valist
at gsignal.c line 2199
#19 IA__g_signal_emit
at gsignal.c line 2243
#20 IA__gtk_button_released
at gtkbutton.c line 881
#21 gtk_button_button_release
at gtkbutton.c line 1377
#22 _gtk_marshal_BOOLEAN__BOXED
at gtkmarshalers.c line 84
#23 g_type_class_meta_marshal
at gclosure.c line 567
#24 IA__g_closure_invoke
at gclosure.c line 490
#25 signal_emit_unlocked_R
at gsignal.c line 2478
#26 IA__g_signal_emit_valist
at gsignal.c line 2209
#27 IA__g_signal_emit
at gsignal.c line 2243
#28 gtk_widget_event_internal
at gtkwidget.c line 4267
#29 IA__gtk_propagate_event
at gtkmain.c line 2350
#30 IA__gtk_main_do_event
at gtkmain.c line 1570
#31 gdk_event_dispatch
at gdkevents-x11.c line 2349
#32 IA__g_main_context_dispatch
at gmain.c line 2061
#33 g_main_context_iterate
at gmain.c line 2694
#34 IA__g_main_loop_run
at gmain.c line 2898
#35 IA__gtk_main
at gtkmain.c line 1144
#36 main
at ephy-main.c line 720
#0 __kernel_vsyscall



----------- .xsession-errors ---------------------
(gnome-panel:3841): GConf-WARNING **: Directory `/apps/panel/toplevels/top_panel_screen1/screen' was not being monitored by GConfClient 0x80f0f58
(gnome-panel:3841): GConf-WARNING **: Directory `/apps/panel/toplevels/bottom_panel_screen1/screen' was not being monitored by GConfClient 0x80f0f58
** (gnome-panel:3841): WARNING **: panel-applet-frame.c:1278: failed to load applet OAFIID:GrandrApplet:
'!prefs_key=/apps/panel/applets/applet_14/prefs;background=none:;orient=down;size=x-small;locked_down=false kon niet gevonden worden of het uitbreiden hiervan is mislukt
(gnome-panel:3841): GConf-WARNING **: Directory `/apps/panel/toplevels/top_panel_screen1/screen' was not being monitored by GConfClient 0x80f0f58
(gnome-panel:3841): GConf-WARNING **: Directory `/apps/panel/toplevels/bottom_panel_screen1/screen' was not being monitored by GConfClient 0x80f0f58
** (epiphany:16604): WARNING **: Could not get rules file from filterg site
sys:1: Warning: g_strsplit: assertion `string != NULL' failed
Cannot access memory at address 0x0
Cannot access memory at address 0x0
--------------------------------------------------

Comment 3 Reinout van Schouwen 2007-07-01 21:10:36 UTC

The offending bit of code:

	t = lines = g_strsplit (contents, "\n", 0);

	while (TRUE)
	{
(190)    	line = *t++;
		if (line == NULL) break;
---
Just a guess: the variable t is an uninitialized array so that accessing it causes a crash?!

Comment 4 Christian Persch 2007-07-02 11:03:00 UTC

t is NULL here.

*** This bug has been marked as a duplicate of 452119 ***