Re: [Qemu-devel] [PATCH] virtio-gpu: fix crashes upon warm reboot with vga mode

[Gerd Hoffmann]

On Fri, Aug 03, 2018 at 05:32:35PM +0200, Marc-André Lureau wrote:
> With vga=775 on the Linux command line a first boot of the VM running
> Linux works fine. After a warm reboot it crashes during Linux boot.
> 
> Before that, valgrind points out bad memory write to console
> surface. The VGA code is not aware that virtio-gpu got a message
> surface scanout when the display is disabled. Let's reset VGA graphic
> mode when it is the case, so that a new display surface is created
> when doing further VGA operations.

I guess we should simply call vga_common_reset() in virtio_vga_reset()
instead, can you try that?

thanks,
  Gerd