[cairo] FW: infrequent crash in cairo_pattern_destroy

Wed Aug 6 09:14:03 PDT 2014

Thank you, I'll try that. I'm having trouble getting the latest though. The
git command

git clone git://anongit.freedesktop.org/git/cairo

Errors out after a while.

$ git clone git://anongit.freedesktop.org/git/cairo
Cloning into 'cairo'...
fatal: unable to connect to anongit.freedesktop.org:
anongit.freedesktop.org[0: 131.252.210.161]: errno=No error

I was, however, able to get the 1.12.16 snapshot, and plan to test with
that. 

Caleb

-----Original Message-----
From: Bryce Harrington [mailto:bryce at osg.samsung.com] 
Sent: Tuesday, August 05, 2014 1:03 PM
To: Caleb Alden
Cc: cairo at cairographics.org
Subject: Re: [cairo] FW: infrequent crash in cairo_pattern_destroy

On Tue, Aug 05, 2014 at 11:01:18AM -0700, Caleb Alden wrote:
> Hi
> 
> I'm getting a very infrequent ( once every 10-15 days ) crash of my
> application. Based on the core dump backtrace, it’s crashing while
redrawing
> the UI during the function cairo_pattern_destroy. 
> 
> ·         wxWidgets version 2.95 
> 
> ·         Cairo version 1.8.0 

Might start by re-testing against current git.  If it doesn't repro
there, then git bisect to find the patch.

If it does repro, then file a bug report and do 'bt full' in gdb to get
more details about why it's crashing there.

Bryce

> ·         Fedora core 10 
> 
> ·         LXDE windows manager
> 
> Here is the full backtrace for one of the crashes. I have seen 6
backtraces
> so far and they all end at __libc_free in cairo_pattern_destroy. If anyone
> has any suggestions it would be greatly appreciated.
> 
> Thank you!
> 
> Caleb
> 
>  
> 
> #0  __libc_free (mem=0x7) at malloc.c:3599
> 
> 3599      if (chunk_is_mmapped(p))                       /* release
mmapped
> memory. */
> 
> (gdb) bt
> 
> #0  __libc_free (mem=0x7) at malloc.c:3599
> 
> #1  0x00ff76d6 in cairo_pattern_destroy (pattern=0xc7b5088)
> 
>     at cairo-pattern.c:738
> 
> #2  0x00fe7a5d in _cairo_gstate_fini (gstate=0xd20bc00) at
> cairo-gstate.c:204
> 
> #3  0x00fe7a98 in _cairo_gstate_restore (gstate=0x0, freelist=0xdb2e1f4)
> 
>     at cairo-gstate.c:260
> 
> #4  0x00fe1ffd in cairo_restore (cr=0xdb2e070) at cairo.c:363
> 
> #5  0x07881fe2 in gdk_pango_renderer_draw_glyphs (renderer=0xc50d800, 
> 
>     font=0xa29d808, glyphs=0xceed960, x=129024, y=91136) at gdkpango.c:247
> 
> #6  0x07d345ea in pango_renderer_draw_glyphs (renderer=0xc50d800, 
> 
>     font=0xa29d808, glyphs=0xceed960, x=129024, y=91136)
> 
>     at pango-renderer.c:639
> 
> #7  0x07d3466e in pango_renderer_default_draw_glyph_item
> (renderer=0xc50d800, 
> 
>     text=0xd411b00 "Pause", glyph_item=0xb2e11d80, x=129024, y=91136)
> 
>     at pango-renderer.c:715
> 
> #8  0x07d3455a in pango_renderer_draw_glyph_item (renderer=0xc50d800, 
> 
>     text=0xd411b00 "Pause", glyph_item=0xb2e11d80, x=129024, y=91136)
> 
>     at pango-renderer.c:703
> 
> #9  0x07d34dd3 in pango_renderer_draw_layout_line (renderer=0xc50d800, 
> 
>     line=0xd242648, x=129024, y=91136) at pango-renderer.c:568
> 
> #10 0x07d350e1 in pango_renderer_draw_layout (renderer=0xc50d800, 
> 
>     layout=0xd5a5e10, x=129024, y=77824) at pango-renderer.c:192
> 
> #11 0x07880f11 in IA__gdk_draw_layout_with_colors (drawable=0xc690580, 
> 
> ---Type <return> to continue, or q <return> to quit---
> 
>     gc=0xa26f050, x=126, y=76, layout=0xd5a5e10, foreground=0x0, 
> 
>     background=0x0) at gdkpango.c:951
> 
> #12 0x078810c1 in IA__gdk_draw_layout (drawable=0xc690580, gc=0xa26f050, 
> 
>     x=126, y=76, layout=0xd5a5e10) at gdkpango.c:1013
> 
> #13 0x07a96e92 in gtk_default_draw_layout (style=0xa360500,
> window=0xc690580, 
> 
>     state_type=GTK_STATE_INSENSITIVE, use_text=0, area=0xcdf165c, 
> 
>     widget=0xd7afa60, detail=0x7c42081 "label", x=126, y=76,
> layout=0xda63110)
> 
>     at gtkstyle.c:5084
> 
> #14 0x07a92fa2 in IA__gtk_paint_layout (style=0xa360500, window=0xc690580,

> 
>     state_type=GTK_STATE_INSENSITIVE, use_text=0, area=0xcdf165c, 
> 
>     widget=0xd7afa60, detail=0x7c42081 "label", x=126, y=76,
> layout=0xda63110)
> 
>     at gtkstyle.c:6401
> 
> #15 0x07a0ea9c in gtk_label_expose (widget=0xd7afa60, event=0xcdf1650)
> 
>     at gtklabel.c:2848
> 
> #16 0x07a1e116 in _gtk_marshal_BOOLEAN__BOXED (closure=0xa1daae8, 
> 
>     return_value=0xbfae5910, n_param_values=2, param_values=0xdb00740, 
> 
>     invocation_hint=0xbfae58fc, marshal_data=0x7a0e990) at
> gtkmarshalers.c:84
> 
> #17 0x05a80959 in g_type_class_meta_marshal (closure=0xa1daae8, 
> 
>     return_value=0xbfae5910, n_param_values=2, param_values=0xdb00740, 
> 
>     invocation_hint=0xbfae58fc, marshal_data=0xc8) at gclosure.c:878
> 
> #18 0x05a82108 in IA__g_closure_invoke (closure=0xa1daae8, 
> 
>     return_value=0xbfae5910, n_param_values=2, param_values=0xdb00740, 
> 
>     invocation_hint=0xbfae58fc) at gclosure.c:767
> 
> ---Type <return> to continue, or q <return> to quit---
> 
> #19 0x05a982cd in signal_emit_unlocked_R (node=0xa1dabe0, detail=0, 
> 
>     instance=0xd7afa60, emission_return=0xbfae5a48, 
> 
>     instance_and_params=0xdb00740) at gsignal.c:3282
> 
> #20 0x05a99bbb in IA__g_signal_emit_valist (instance=0xd7afa60,
> signal_id=38, 
> 
>     detail=0, var_args=0xbfae5aa0
> "ï¿½Zï¿½ï¿½P\026ï¿½\f`ï¿½z\rï¿½\225ï¿½\a`ï¿½z\rho\035\n")
> 
>     at gsignal.c:2987
> 
> #21 0x05a9a1b6 in IA__g_signal_emit (instance=0xd7afa60, signal_id=38, 
> 
>     detail=0) at gsignal.c:3034
> 
> #22 0x07b333ae in gtk_widget_event_internal (widget=0xd7afa60,
> event=0xcdf1650)
> 
>     at gtkwidget.c:4745
> 
> #23 0x079941a3 in IA__gtk_container_propagate_expose (container=0xc050930,

> 
>     child=0xd7afa60, event=0xda6fdf8) at gtkcontainer.c:2687
> 
> #24 0x079941d1 in gtk_container_expose_child (child=0xd7afa60, 
> 
>     client_data=0xbfae5b68) at gtkcontainer.c:2575
> 
> #25 0x0795e61d in gtk_bin_forall (container=0xc050930,
include_internals=1, 
> 
>     callback=0x79941b0 <gtk_container_expose_child>,
> callback_data=0xbfae5b68)
> 
>     at gtkbin.c:128
> 
> #26 0x07994d66 in IA__gtk_container_forall (container=0xc050930, 
> 
>     callback=0x79941b0 <gtk_container_expose_child>,
> callback_data=0xbfae5b68)
> 
>     at gtkcontainer.c:1455
> 
> #27 0x07996450 in gtk_container_expose (widget=0xc050930, event=0xda6fdf8)
> 
>     at gtkcontainer.c:2598
> 
> #28 0x079689b1 in gtk_button_expose (widget=0xc050930, event=0xda6fdf8)
> 
> ---Type <return> to continue, or q <return> to quit---
> 
>     at gtkbutton.c:1348
> 
> #29 0x07a1e116 in _gtk_marshal_BOOLEAN__BOXED (closure=0xa1daae8, 
> 
>     return_value=0xbfae5d70, n_param_values=2, param_values=0xd6b2140, 
> 
>     invocation_hint=0xbfae5d5c, marshal_data=0x7968930) at
> gtkmarshalers.c:84
> 
> #30 0x05a80959 in g_type_class_meta_marshal (closure=0xa1daae8, 
> 
>     return_value=0xbfae5d70, n_param_values=2, param_values=0xd6b2140, 
> 
>     invocation_hint=0xbfae5d5c, marshal_data=0xc8) at gclosure.c:878
> 
> #31 0x05a82108 in IA__g_closure_invoke (closure=0xa1daae8, 
> 
>     return_value=0xbfae5d70, n_param_values=2, param_values=0xd6b2140, 
> 
>     invocation_hint=0xbfae5d5c) at gclosure.c:767
> 
> #32 0x05a982cd in signal_emit_unlocked_R (node=0xa1dabe0, detail=0, 
> 
>     instance=0xc050930, emission_return=0xbfae5ea8, 
> 
>     instance_and_params=0xd6b2140) at gsignal.c:3282
> 
> #33 0x05a99bbb in IA__g_signal_emit_valist (instance=0xc050930,
> signal_id=38, 
> 
>     detail=0, 
> 
>     var_args=0xbfae5f00
> "\030_ï¿½ï¿½ï¿½ï¿½ï¿½\r0\t\005\fï¿½\225ï¿½\a0\t\005\fho\035\n")
> 
>     at gsignal.c:2987
> 
> #34 0x05a9a1b6 in IA__g_signal_emit (instance=0xc050930, signal_id=38, 
> 
>     detail=0) at gsignal.c:3034
> 
> #35 0x07b333ae in gtk_widget_event_internal (widget=0xc050930,
> event=0xda6fdf8)
> 
>     at gtkwidget.c:4745
> 
> #36 0x079941a3 in IA__gtk_container_propagate_expose (container=0xc010228,

> 
>     child=0xc050930, event=0xbfae63f4) at gtkcontainer.c:2687
> 
> ---Type <return> to continue, or q <return> to quit---
> 
> #37 0x079941d1 in gtk_container_expose_child (child=0xc050930, 
> 
>     client_data=0xbfae5fd8) at gtkcontainer.c:2575
> 
> #38 0x079d2f79 in gtk_fixed_forall (container=0xc010228,
> include_internals=1, 
> 
>     callback=0x79941b0 <gtk_container_expose_child>,
> callback_data=0xbfae5fd8)
> 
>     at gtkfixed.c:449
> 
> #39 0x07994d66 in IA__gtk_container_forall (container=0xc010228, 
> 
>     callback=0x79941b0 <gtk_container_expose_child>,
> callback_data=0xbfae5fd8)
> 
>     at gtkcontainer.c:1455
> 
> #40 0x07996450 in gtk_container_expose (widget=0xc010228,
event=0xbfae63f4)
> 
>     at gtkcontainer.c:2598
> 
> #41 0x07a1e116 in _gtk_marshal_BOOLEAN__BOXED (closure=0xa1daae8, 
> 
>     return_value=0xbfae61b0, n_param_values=2, param_values=0xd1e88c8, 
> 
>     invocation_hint=0xbfae619c, marshal_data=0x79963b0) at
> gtkmarshalers.c:84
> 
> #42 0x05a80959 in g_type_class_meta_marshal (closure=0xa1daae8, 
> 
>     return_value=0xbfae61b0, n_param_values=2, param_values=0xd1e88c8, 
> 
>     invocation_hint=0xbfae619c, marshal_data=0xc8) at gclosure.c:878
> 
> #43 0x05a821db in IA__g_closure_invoke (closure=0xa1daae8, 
> 
>     return_value=0xbfae61b0, n_param_values=2, param_values=0xd1e88c8, 
> 
>     invocation_hint=0xbfae619c) at gclosure.c:767
> 
> #44 0x05a982cd in signal_emit_unlocked_R (node=0xa1dabe0, detail=0, 
> 
>     instance=0xc010228, emission_return=0xbfae62e8, 
> 
>     instance_and_params=0xd1e88c8) at gsignal.c:3282
> 
> #45 0x05a99bbb in IA__g_signal_emit_valist (instance=0xc010228,
> signal_id=38, 
> 
> ---Type <return> to continue, or q <return> to quit---
> 
>     detail=0, 
> 
>     var_args=0xbfae6340
> "Xcï¿½ï¿½ï¿½cï¿½ï¿½(\002\001\fï¿½\225ï¿½\a(\002\001\fho\035\n")
> 
>     at gsignal.c:2987
> 
> #46 0x05a9a1b6 in IA__g_signal_emit (instance=0xc010228, signal_id=38, 
> 
>     detail=0) at gsignal.c:3034
> 
> #47 0x07b333ae in gtk_widget_event_internal (widget=0xc010228, 
> 
>     event=0xbfae63f4) at gtkwidget.c:4745
> 
> #48 0x07a1821d in IA__gtk_main_do_event (event=0xbfae63f4) at
gtkmain.c:1553
> 
> #49 0x07892625 in gdk_window_process_updates_internal (window=0xc690580)
> 
>     at gdkwindow.c:2598
> 
> #50 0x07892c3f in IA__gdk_window_process_all_updates () at
gdkwindow.c:2664
> 
> #51 0x07994eff in gtk_container_idle_sizer (data=0x0) at
gtkcontainer.c:1309
> 
> #52 0x078760cb in gdk_threads_dispatch (data=0xc935530) at gdk.c:473
> 
> #53 0x066122d1 in g_idle_dispatch (source=0xd663908, callback=0xffffffff, 
> 
>     user_data=0xc935530) at gmain.c:4235
> 
> #54 0x06614208 in g_main_dispatch () at gmain.c:2144
> 
> #55 IA__g_main_context_dispatch (context=0xa1d5508) at gmain.c:2697
> 
> #56 0x066178b3 in g_main_context_iterate (context=0xa1d5508, block=1, 
> 
>     dispatch=1, self=0xa1ba5e0) at gmain.c:2778
> 
> #57 0x06617dd2 in IA__g_main_loop_run (loop=0xbb03cc0) at gmain.c:2986
> 
> #58 0x07a18489 in IA__gtk_main () at gtkmain.c:1200
> 
> #59 0x006b333d in wxGUIEventLoop::DoRun ()
> 
>    from /usr/local/lib/libwx_gtk2u_core-2.9.so.5
> 
>  
> 
>  
> 

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