Xwayland crashed with signal 7 in XkbDeviceApplyKeymap()

[ubuntu-bolivia]

none

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: xwayland 2:1.19.6-1ubuntu3
ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
Uname: Linux 4.15.0-13-generic x86_64
ApportVersion: 2.20.9-0ubuntu4
Architecture: amd64
CompositorRunning: None
CrashCounter: 1
CurrentDesktop: GNOME-Greeter:GNOME
Date: Sat Apr 7 17:18:23 2018
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
ExecutablePath: /usr/bin/Xwayland
GraphicsCard:
 Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Haswell-ULT Integrated Graphics Controller [1043:13ed]
InstallationDate: Installed on 2018-03-01 (40 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180301)
MachineType: ASUSTeK COMPUTER INC. S301LA
ProcCmdline: /usr/bin/Xwayland :1024 -rootless -terminate -accessx -core -listen 4 -listen 5 -displayfd 6
ProcEnviron:
 LANGUAGE=es_BO:es
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=es_BO.UTF-8
 SHELL=/bin/false
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-13-generic.efi.signed root=UUID=47cb83ff-b68f-4365-9a97-07b0b4723c16 ro quiet splash vt.handoff=1
Signal: 7
SourcePackage: xorg-server
StacktraceTop:
 ?? ()
 XkbDeviceApplyKeymap ()
 ?? ()
 ?? ()
 ?? ()
Title: Xwayland crashed with signal 7 in XkbDeviceApplyKeymap()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

dmi.bios.date: 08/19/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: S301LA.205
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: S301LA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrS301LA.205:bd08/19/2013:svnASUSTeKCOMPUTERINC.:pnS301LA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnS301LA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.family: S
dmi.product.name: S301LA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.91-2
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.0~rc5-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.0~rc5-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

[Apport retracing service (apport)]

StacktraceTop:
 XkbCopyKeymap (dst=0x55f359b784b0, src=0x55f359ba03b0) at ../../../../xkb/xkbUtils.c:1957
 XkbCopyKeymap (src=<optimized out>, dst=<optimized out>) at ../../../../xkb/xkbUtils.c:1965
 XkbDeviceApplyKeymap (dst=dst@entry=0x55f359b77690, desc=<optimized out>) at ../../../../xkb/xkbUtils.c:2025
 CopyKeyClass (device=device@entry=0x55f359b4dbb0, master=master@entry=0x55f359b77690) at ../../../../Xi/exevents.c:233
 DeepCopyKeyboardClasses (to=0x55f359b77690, from=0x55f359b4dbb0) at ../../../../Xi/exevents.c:427

[Sebastien Bacher (seb128)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please answer these questions:
* Is this reproducible?
* If so, what specific steps should we take to recreate this bug?

This will help us to find and resolve the problem.

[Launchpad Janitor (janitor)]

[Expired for xorg-server (Ubuntu) because there has been no activity for 60 days.]

[Daniel van Vugt (vanvugt)]

Although the binary is different, the stack is identical. Let's call this bug 1774723.

Both Xorg and Xwayland share the same source so it makes sense to group them.