Version-Release number of selected component:
gnome-shell-3.18.0-1.fc23

Additional info:
reporter:       libreport-2.6.2
backtrace_rating: 4
cmdline:        /usr/bin/gnome-shell
crash_function: _cairo_surface_is_image
executable:     /usr/bin/gnome-shell
global_pid:     2602
kernel:         4.2.3-300.fc23.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 _cairo_surface_is_image at cairo-image-surface-inline.h:77
 #1 INT_cairo_image_surface_get_width at cairo-image-surface.c:613
 #2 paint_shadow_pattern_to_cairo_context at st/st-theme-node-drawing.c:736
 #3 paint_inset_box_shadow_to_cairo_context at st/st-theme-node-drawing.c:927
 #4 st_theme_node_prerender_background at st/st-theme-node-drawing.c:1249
 #5 st_theme_node_render_resources at st/st-theme-node-drawing.c:1474
 #6 st_theme_node_paint at st/st-theme-node-drawing.c:2422
 #7 st_widget_paint_background at st/st-widget.c:449
 #8 st_widget_paint at st/st-widget.c:458
 #9 _g_closure_invoke_va at gclosure.c:864

Potential duplicate: bug 1226645