[RDP] gnome-boxes crashed with SIGSEGV in convert_alpha()

[El jinete sin cabeza]

https://gitlab.gnome.org/GNOME/gnome-boxes/issues/327

---

1. Open gnome-boxes
2. Clicked in 'New'
3. Clicked in 'Connect to remote box'
4. Data: rdp://MyIP.Windows10Professional
5. Login to 'Remote Host'
6. Clicked in '<' (Top bar)
7. Crash gnome-boxes

ProblemType: Crash
DistroRelease: Ubuntu 19.04
Package: gnome-boxes 3.31.90-2
Uname: Linux 5.0.2-050002-generic x86_64
ApportVersion: 2.20.10-0ubuntu23
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Mar 18 14:53:02 2019
ExecutablePath: /usr/bin/gnome-boxes
InstallationDate: Installed on 2018-12-02 (106 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
ProcCmdline: /usr/bin/gnome-boxes --gapplication-service
ProcEnviron:
 XDG_RUNTIME_DIR=<set>
 SHELL=/bin/bash
 LANGUAGE=es_CL:es
 PATH=(custom, no user)
 LANG=es_CL.UTF-8
SegvAnalysis:
 Segfault happened at: 0x7fec226cd4db <gdk_pixbuf_get_from_surface+459>: mov (%r15,%rdi,4),%eax
 PC (0x7fec226cd4db) ok
 source "(%r15,%rdi,4)" (0x7feb8d7e5000) in non-readable VMA region: 0x7feb8d7e5000-0x7feb90000000 ---p None
 destination "%eax" ok
SegvReason: reading VMA None
Signal: 11
SourcePackage: gnome-boxes
StacktraceTop:
 gdk_pixbuf_get_from_surface () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
 ?? ()
 ?? ()
 boxes_machine_set_screenshot_enable ()
 g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: gnome-boxes crashed with SIGSEGV in gdk_pixbuf_get_from_surface()
UpgradeStatus: Upgraded to disco on 2018-12-02 (105 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
separator:

[Apport retracing service (apport)]

StacktraceTop:
 convert_alpha (height=1012, width=1886, src_y=0, src_x=<optimized out>, src_stride=4096, src_data=0x7feb8d7e3a30 "", dest_stride=7544, dest_data=0x55bea0b6d888 "") at ../../../../gdk/gdkpixbuf-drawable.c:187
 gdk_pixbuf_get_from_surface (surface=0x7feb8d7c1d10, src_x=<optimized out>, src_y=0, width=1886, height=1012) at ../../../../gdk/gdkpixbuf-drawable.c:295
 boxes_machine_real_take_screenshot_co (_data_=0x55bea0500f30) at ../src/machine.vala:375
 boxes_machine_real_take_screenshot (self=0x55be9ec29240, _callback_=0x55be9d3c0470 <boxes_machine_update_screenshot_ready>, _user_data_=0x55bea04f4630) at ../src/machine.vala:5
 boxes_machine_take_screenshot (_user_data_=0x55bea04f4630, _callback_=0x55be9d3c0470 <boxes_machine_update_screenshot_ready>, self=<optimized out>) at ../src/machine.vala:5