.
Thread 3 (process 23205):
#0  0xb8026430 in __kernel_vsyscall ()
#1  0xb7495cf9 in __lll_lock_wait () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb7491104 in _L_lock_89 () from /lib/tls/i686/cmov/libpthread.so.0
#3  0xb7490a32 in pthread_mutex_lock ()
   from /lib/tls/i686/cmov/libpthread.so.0
#4  0xb7fe7d36 in ev_document_fc_mutex_lock () from /usr/lib/libevbackend.so.0
#5  0x0807a82b in ?? ()
#6  0x0807b23a in ?? ()
#7  0xb7d41ed6 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#8  0xb75683c9 in ?? () from /usr/lib/libgobject-2.0.so.0
#9  0xb7569c4b in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#10 0xb757fd3d in ?? () from /usr/lib/libgobject-2.0.so.0
#11 0xb758162b in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#12 0xb7581c26 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#13 0xb7e5700e in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#14 0xb7d3bfdd in gtk_main_do_event () from /usr/lib/libgtk-x11-2.0.so.0
#15 0xb79799c5 in ?? () from /usr/lib/libgdk-x11-2.0.so.0
#16 0xb7979fdf in gdk_window_process_all_updates ()
   from /usr/lib/libgdk-x11-2.0.so.0
#17 0xb7cb8eef in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#18 0xb795d46b in ?? () from /usr/lib/libgdk-x11-2.0.so.0
#19 0xb74da7c1 in ?? () from /usr/lib/libglib-2.0.so.0
#20 0xb74dc6f8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#21 0xb74dfda3 in ?? () from /usr/lib/libglib-2.0.so.0
#22 0xb74e02c2 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#23 0xb7d3c249 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#24 0x0809155b in ?? ()
#25 0xb7341685 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#26 0x0805e071 in ?? ()
.
Thread 2 (process 23210):
#0  0xb8026430 in __kernel_vsyscall ()
#1  0xb7493392 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb7fd40bd in ?? () from /usr/lib/libgthread-2.0.so.0
#3  0xb74b6269 in ?? () from /usr/lib/libglib-2.0.so.0
#4  0xb7508738 in ?? () from /usr/lib/libglib-2.0.so.0
#5  0xb750705f in ?? () from /usr/lib/libglib-2.0.so.0
#6  0xb748f4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb740c64e in clone () from /lib/tls/i686/cmov/libc.so.6
.
Thread 1 (process 23209):
#0  0xb717a0fb in Form::findWidgetByRef () from /usr/lib/libpoppler.so.3
#1  0xb716bf84 in AnnotWidget::initialize () from /usr/lib/libpoppler.so.3
#2  0xb716c294 in AnnotWidget::AnnotWidget () from /usr/lib/libpoppler.so.3
#3  0xb716e6b2 in Annots::createAnnot () from /usr/lib/libpoppler.so.3
#4  0xb716e9ca in Annots::Annots () from /usr/lib/libpoppler.so.3
#5  0xb71d4666 in Page::displaySlice () from /usr/lib/libpoppler.so.3
#6  0xb79e705a in ?? () from /usr/lib/libpoppler-glib.so.3
#7  0xb79e7197 in poppler_page_render () from /usr/lib/libpoppler-glib.so.3
#8  0xb589a668 in ?? () from /usr/lib/evince/backends/libpdfdocument.so
#9  0xb7fe8050 in ev_document_render () from /usr/lib/libevbackend.so.0
#10 0x08063dfc in ?? ()
#11 0x080615c0 in ?? ()
#12 0xb750705f in ?? () from /usr/lib/libglib-2.0.so.0
#13 0xb748f4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#14 0xb740c64e in clone () from /lib/tls/i686/cmov/libc.so.6