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[Brian Avery <briansvgs@xxxxxxxxx>]

I see the following stack trace. This seems to match the original
description of the bug:

#0  0x00007fb1fbc00610 in cairo_surface_set_device_scale () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#1  0x00000000004416cf in thumbnail_job_completed_callback (job=0x7fb1e4005f30, sidebar_thumbnails=<optimized out>)
    at /build/buildd/evince-3.14.2/./shell/ev-sidebar-thumbnails.c:941
#2  0x00007fb1fb3ae504 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#3  0x00007fb1fb3c7fa7 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#4  0x00007fb1fb3c88ff in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#5  0x00007fb1fd55cb63 in emit_finished (job=<optimized out>) at /build/buildd/evince-3.14.2/./libview/ev-jobs.c:180
#6  0x00007fb1fb0d8b4d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fb1fb0d8f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fb1fb0d8fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fb1fb69966c in g_application_run () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#10 0x000000000041cc22 in main (argc=1, argv=0x7ffc4af3f7b8) at /build/buildd/evince-3.14.2/./shell/main.c:316


Based on this stack trace, I have determined that the crash occurs on line 949  of ev-sidebar-thumbnails.c when the following is executed:

cairo_surface_set_device_scale (job->thumbnail_surface, device_scale,
device_scale);

The crash occurs because job->thumbnail_surface is null. I have not yet
figured out why  it is null though.

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https://bugs.launchpad.net/bugs/1449700

Title:
  evince crashed with SIGSEGV in add_range()

Status in Evince document viewer:
  Confirmed
Status in evince package in Ubuntu:
  Triaged

Bug description:
  To reproduce this bug:

   - load the attached PS file into evince
   - if thumbnails are not displayed press F9 and choose to display thumbnails
   - wait for the crash

  ProblemType: Crash
  DistroRelease: Ubuntu 15.04
  Package: evince 3.16.0-0ubuntu1~vivid1 [origin: LP-PPA-gnome3-team-gnome3-staging]
  ProcVersionSignature: Error: [Errno 2] No such file or directory: '/proc/version_signature'
  Uname: Linux 4.0.0-040000-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Tue Apr 28 20:03:29 2015
  EcryptfsInUse: Yes
  ExecutablePath: /usr/bin/evince
  ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-4.0.0-040000-generic root=UUID=749a9901-bdd3-4b5f-b80e-69414667e058 ro enable_mtrr_cleanup mtrr_spare_reg_nr=1 mtrr_gran_size=32M mtrr_chunk_size=128M quiet splash vt.handoff=7
  SegvAnalysis:
   Segfault happened at: 0x7effc04a7610 <cairo_surface_set_device_scale>:	mov    0x1c(%rdi),%eax
   PC (0x7effc04a7610) ok
   source "0x1c(%rdi)" (0x0000001c) not located in a known VMA region (needed readable region)!
   destination "%eax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: evince
  StacktraceTop:
   cairo_surface_set_device_scale () at /usr/lib/x86_64-linux-gnu/libcairo.so.2
   thumbnail_job_completed_callback (job=0x268acf0 [EvJobThumbnail], sidebar_thumbnails=<optimized out>) at /build/buildd/evince-3.16.0/./shell/ev-sidebar-thumbnails.c:941
   _g_closure_invoke_va (closure=0x0, closure@entry=0x27fd230, return_value=0x2238970, return_value@entry=0x0, instance=0x26284c0, instance@entry=0x268acf0, args=0x1, args@entry=0x7ffe80214180, n_params=35867472, param_types=0x255d1f0) at /build/buildd/glib2.0-2.44.0/./gobject/gclosure.c:831
   g_signal_emit_valist (instance=0x268acf0, signal_id=<optimized out>, detail=0, var_args=var_args@entry=0x7ffe80214180) at /build/buildd/glib2.0-2.44.0/./gobject/gsignal.c:3214
   g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=detail@entry=0) at /build/buildd/glib2.0-2.44.0/./gobject/gsignal.c:3361
  Title: evince crashed with SIGSEGV in cairo_surface_set_device_scale()
  UpgradeStatus: Upgraded to vivid on 2015-04-26 (2 days ago)
  UserGroups: adm autopilot cdrom dip fuse libvirtd lpadmin plugdev sambashare staff sudo

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