Xorg crashed with SIGABRT in FlushAllOutput()

[mrl586]

When I browsing on Internet with Opera 31, xorg crash sometimes.

tux@Z50:~$ lsb_release -rd
Description: Ubuntu Wily Werewolf (development branch)
Release: 15.10

tux@Z50:~$ apt-cache policy xserver-xorg-core
xserver-xorg-core:
  Asennettu: 2:1.17.2-1ubuntu3
  Ehdokas: 2:1.17.2-1ubuntu3
  Versiotaulukko:
 *** 2:1.17.2-1ubuntu3 0
        500 http://archive.ubuntu.com/ubuntu/ wily/main amd64 Packages
        100 /var/lib/dpkg/status
     2:1.17.2~git20150703+server-1.17-branch.2123f768-0ubuntu0ricotz 0
        500 http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu/ wily/main amd64 Packages

tux@Z50:~$ apt-cache policy opera-beta
opera-beta:
  Asennettu: 31.0.1889.98
  Ehdokas: 31.0.1889.98
  Versiotaulukko:
 *** 31.0.1889.98 0
        500 http://deb.opera.com/opera-beta/ stable/non-free amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Crash
DistroRelease: Ubuntu 15.10
Package: xserver-xorg-core 2:1.17.2-1ubuntu3
ProcVersionSignature: Ubuntu 4.1.0-3.3-generic 4.1.3
Uname: Linux 4.1.0-3-generic x86_64
ApportVersion: 2.18-0ubuntu5
Architecture: amd64
Date: Wed Aug 5 19:26:11 2015
ExecutablePath: /usr/bin/Xorg
InstallationDate: Installed on 2015-08-05 (0 days ago)
InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150728.1)
ProcCmdline: /usr/bin/X :0 -auth /var/run/sddm/:0 -nolisten tcp -background none -noreset vt7
ProcEnviron:
 PATH=(custom, no user)
 LANG=fi_FI.UTF-8
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
 FlushAllOutput ()
 ?? ()
 ?? ()
 __libc_start_main (main=0x557ddb8e3760, argc=10, argv=0x7fff12bb5298, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff12bb5288) at libc-start.c:289
 _start ()
Title: Xorg crashed with SIGABRT in FlushAllOutput()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 FlushAllOutput () at ../../os/io.c:675
 Dispatch () at ../../dix/dispatch.c:454
 dix_main (argc=10, argv=0x7fff12bb5298, envp=<optimized out>) at ../../dix/main.c:298
 __libc_start_main (main=0x557ddb8e3760 <main>, argc=10, argv=0x7fff12bb5298, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff12bb5288) at libc-start.c:289
 _start ()

[mrl586 (mrl586)]

Also vivaldi kills X with same bug.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[James Young (marmarama)]

This is also: https://bugs.freedesktop.org/show_bug.cgi?id=91316

Patch is available on the bugs.freedesktop.org bug.