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[Qemu-devel] [Bug 1755912] Re: qemu-system-x86_64 crashed with SIGABRT w

From: Leonardo Müller
Subject: [Qemu-devel] [Bug 1755912] Re: qemu-system-x86_64 crashed with SIGABRT when using option -vga qxl
Date: Mon, 16 Jul 2018 17:26:03 -0000

I meant the option --enable-opengl and, for old versions, --enable-gtk-
gl. I know it is required to use virtual machines using Intel GVT-g with
dma-buf, and is a option strangely absent from QEMU configuration from
Ubuntu's build. Without it, virgl fails too, making virt-manager have an
option that does not work (under Spice Display, OpenGL option does not

The 2.12 build does crash when tested. That while loop is pretty
efficient to trigger it. The git version can keep running it for hours
straight with no problem, while the problematic versions crash in

As QEMU configuration is a result mixed between packages found
automatically and those manually set by me, here is the configure
command and its results from my QEMU build:

Please note that I had no need to build other targets for my use, so the
configuration is much smaller than the one used by Ubuntu's QEMU.

You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.

  qemu-system-x86_64 crashed with SIGABRT when using option -vga qxl

Status in QEMU:
Status in qemu package in Ubuntu:

Bug description:
  When using qemu-system-x86_64 with the option -vga qxl, it crashes.
  The easiest way to crash it is by trying to change the guest's
  resolution. However, the system may randomly crash too, not happening
  only when changing resolution. Here is the terminal output of one of
  these random crashes:


  $ qemu-system-x86_64 -hda /dev/sdb -m 2048 -enable-kvm -cpu host -vga qxl 
-nodefaults -netdev user,id=hostnet0 -device 
  WARNING: Image format was not specified for '/dev/sdb' and probing guessed 
           Automatically detecting the format is dangerous for raw images, 
write operations on block 0 will be restricted.
           Specify the 'raw' format explicitly to remove the restrictions.

  (process:21313): Spice-WARNING **: 16:01:45.759: display-
  channel.c:2431:display_channel_validate_surface: canvas address is
  0x7f8eb948ab18 for 0 (and is NULL)

  (process:21313): Spice-WARNING **: 16:01:45.759: 
display-channel.c:2432:display_channel_validate_surface: failed on 0

  (process:21313): Spice-CRITICAL **: 16:01:45.759: 
display-channel.c:2035:display_channel_update: condition 
`display_channel_validate_surface(display, surface_id)' failed
  Abortado (imagem do núcleo gravada)


  I was running QEMU as a normal user which is on the groups kvm and
  disk. Initially I supposed the problem was because I was running QEMU
  as root, but as a normal user this happens too.

  I have tested with guests with different Ubuntu version: 18.04, 17.10
  and 16.04. It is happening with them all.

  ProblemType: Crash
  DistroRelease: Ubuntu 18.04
  Package: qemu-system-x86 1:2.11+dfsg-1ubuntu4
  ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
  Uname: Linux 4.15.0-10-generic x86_64
  ApportVersion: 2.20.8-0ubuntu10
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Wed Mar 14 17:13:52 2018
  ExecutablePath: /usr/bin/qemu-system-x86_64
  InstallationDate: Installed on 2017-06-13 (273 days ago)
  InstallationMedia: Xubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
  MachineType: LENOVO 80UG
  ProcCmdline: qemu-system-x86_64 -hda /dev/sdb -smp cpus=2 -m 512 -enable-kvm 
-cpu host -vga qxl -nodefaults -netdev user,id=hostnet0 -device 
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-10-generic.efi.signed 
root=UUID=6b4ae5c0-c78c-49a6-a1ba-029192618a7a ro quiet
  Signal: 6
  SourcePackage: qemu
   () at /usr/lib/x86_64-linux-gnu/libspice-server.so.1
   () at /usr/lib/x86_64-linux-gnu/libspice-server.so.1
   () at /usr/lib/x86_64-linux-gnu/libspice-server.so.1
   () at /usr/lib/x86_64-linux-gnu/libspice-server.so.1
   () at /usr/lib/x86_64-linux-gnu/libspice-server.so.1
  Title: qemu-system-x86_64 crashed with SIGABRT
  UpgradeStatus: Upgraded to bionic on 2017-10-20 (145 days ago)
  UserGroups: adm bluetooth cdrom dialout dip disk kvm libvirt lpadmin netdev 
plugdev sambashare sudo
  dmi.bios.date: 07/10/2017
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 0XCN43WW
  dmi.board.asset.tag: NO Asset Tag
  dmi.board.name: Toronto 4A2
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0J40679 WIN
  dmi.chassis.asset.tag: NO Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo ideapad 310-14ISK
  dmi.product.family: IDEAPAD
  dmi.product.name: 80UG
  dmi.product.version: Lenovo ideapad 310-14ISK
  dmi.sys.vendor: LENOVO

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