[Bug 1838390] Re: vmx_write_mem: mmu_gva_to_gpa failed when using hvf

[Jimmy]

Ubuntu 18.04 VM crashes after login. Works when the RAM is 4 Gb. Posting
this here as the error message looked very similar.

qemu-system-x86_64   -m 6G  -vga virtio   -show-cursor   -usb   -device
usb-tablet   -enable-kvm   -drive file=~/QEMU/ubuntu-
desktop-18.04.qcow2,if=virtio   -accel hvf   -cpu host

Crashed with below message
vmx_write_mem: mmu_gva_to_gpa ffff97ccb8dbe000 failed
Abort trap: 6

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https://bugs.launchpad.net/bugs/1838390

Title:
  vmx_write_mem: mmu_gva_to_gpa failed when using hvf

Status in QEMU:
  New

Bug description:
  Installed qemu 4.0.0 by homebrew, used below commands:

  1. qemu-img create -f raw arch-vm.img 100G
  2. qemu-system-x86_64 -show-cursor -only-migratable -nodefaults -boot order=d 
-cdrom archlinux-2019.07.01-x86_64.iso -cpu host -device virtio-keyboard 
-device virtio-mouse -device virtio-tablet -drive 
file=arch-vm.img,format=raw,if=virtio -m 4096 -machine q35,accel=hvf,vmport=off 
-nic user,ipv6=off,model=virtio -smp 4,sockets=1,cores=2,threads=2 -soundhw hda 
-vga virtio

  Displayed bootloader menu successfully, select "Boot Arch Linux" then
  crashed with message: vmx_write_mem: mmu_gva_to_gpa ffff91953b540000
  failed.

  Use tcg accelerator has no problem but very slow.

  See attachment for full crash report.

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