webbrowser-app crashed with SIGSEGV in dri2_create_context()

[Doug McMahon]

Todays image of 16.10, updated. login to unity8 gives pretty much unusable session & 3 crashes, this is one.
(- nothing actually works except opening items in the launcher, the items/scopes don't work & can't be closed/quit directly, only from the launcher.

Other 2 crashes -
private - Bug #1620939 Bug #1622826

ProblemType: Crash
DistroRelease: Ubuntu 16.10
Package: webbrowser-app 0.23+16.10.20160825-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-9136.55-generic 4.4.16
Uname: Linux 4.4.0-9136-generic x86_64
ApportVersion: 2.20.3-0ubuntu7
Architecture: amd64
Date: Mon Sep 12 23:20:56 2016
ExecutablePath: /usr/bin/webbrowser-app
InstallationDate: Installed on 2016-09-13 (0 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Alpha amd64 (20160910)
ProcCmdline: webbrowser-app
ProcEnviron:
 PATH=(custom, user)
 LANGUAGE=en_US
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f73b78b1512: cmpq $0x0,0x38(%r13)
 PC (0x7f73b78b1512) ok
 source "$0x0" ok
 destination "0x38(%r13)" (0x00000038) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: webbrowser-app
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/mesa-egl/libEGL.so.1
 eglCreateContext () from /usr/lib/x86_64-linux-gnu/mesa-egl/libEGL.so.1
 ?? () from /usr/lib/x86_64-linux-gnu/libOxideQtCore.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libOxideQtCore.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libOxideQtCore.so.0
Title: webbrowser-app crashed with SIGSEGV in eglCreateContext()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 dri2_create_context (drv=<optimized out>, disp=<optimized out>, conf=0x0, share_list=<optimized out>, attrib_list=0x7fffeb9f4990) at ../../../src/egl/drivers/dri2/egl_dri2.c:1135
 eglCreateContext (dpy=0x55e3fc1f09d0, config=0x0, share_list=0x0, attrib_list=0x7fffeb9f4990) at ../../../src/egl/main/eglapi.c:636
 gfx::GLContextEGL::Initialize (this=0x55e3fc6f7000, compatible_surface=<optimized out>, gpu_preference=<optimized out>) at ../../../ui/gl/gl_context_egl.cc:85
 gfx::GLContext::CreateGLContext (share_group=share_group@entry=0x0, compatible_surface=compatible_surface@entry=0x55e3fc6f7310, gpu_preference=gpu_preference@entry=gfx::PreferIntegratedGpu) at ../../../ui/gl/gl_context_oxide_linux.cc:46
 gfx::GLSurfaceEGL::InitializeOneOff () at ../../../ui/gl/gl_surface_egl.cc:493

[Launchpad Janitor (janitor)]

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