[Bug 1897481] Re: qemu crashes with VGA pass-through, e-GPU, nvidia 1060

[Thomas Huth]

The QEMU project is currently moving its bug tracking to another system.
For this we need to know which bugs are still valid and which could be
closed already. Thus we are setting the bug state to "Incomplete" now.

If the bug has already been fixed in the latest upstream version of QEMU,
then please close this ticket as "Fix released".

If it is not fixed yet and you think that this bug report here is still
valid, then you have two options:

1) If you already have an account on gitlab.com, please open a new ticket
for this problem in our new tracker here:

    https://gitlab.com/qemu-project/qemu/-/issues

and then close this ticket here on Launchpad (or let it expire auto-
matically after 60 days). Please mention the URL of this bug ticket on
Launchpad in the new ticket on GitLab.

2) If you don't have an account on gitlab.com and don't intend to get
one, but still would like to keep this ticket opened, then please switch
the state back to "New" or "Confirmed" within the next 60 days (other-
wise it will get closed as "Expired"). We will then eventually migrate
the ticket automatically to the new system (but you won't be the reporter
of the bug in the new system and thus you won't get notified on changes
anymore).

Thank you and sorry for the inconvenience.


** Changed in: qemu
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1897481

Title:
  qemu crashes with VGA pass-through, e-GPU, nvidia 1060

Status in QEMU:
  Incomplete

Bug description:
  I try to pass-through nvidia 1060 6gb card, which is connected via
  ExpressCard (EXP-GDC converter).

  I can successfully run my virtual machine without pass-through, but
  when I try to add the devices, qemu crashes.

  The coredump contains:

  Stack trace of thread 3289311:
  #0  0x0000000000614c49 memory_region_update_container_subregions 
(qemu-system-x86_64 + 0x214c49)
  #1  0x00000000005c0e8c vfio_probe_nvidia_bar0_quirk (qemu-system-x86_64 + 
0x1c0e8c)
  #2  0x00000000005bcec0 vfio_realize (qemu-system-x86_64 + 0x1bcec0)
  #3  0x000000000079b423 pci_qdev_realize (qemu-system-x86_64 + 0x39b423)
  #4  0x00000000006facda device_set_realized (qemu-system-x86_64 + 0x2facda)
  #5  0x0000000000887e57 property_set_bool (qemu-system-x86_64 + 0x487e57)
  #6  0x000000000088ac48 object_property_set (qemu-system-x86_64 + 0x48ac48)
  #7  0x000000000088d1d2 object_property_set_qobject (qemu-system-x86_64 + 
0x48d1d2)
  #8  0x000000000088b1f7 object_property_set_bool (qemu-system-x86_64 + 
0x48b1f7)
  #9  0x0000000000693785 qdev_device_add (qemu-system-x86_64 + 0x293785)
  #10 0x000000000061aad0 device_init_func (qemu-system-x86_64 + 0x21aad0)
  #11 0x000000000098c87b qemu_opts_foreach (qemu-system-x86_64 + 0x58c87b)
  #12 0x00000000006211cb qemu_init (qemu-system-x86_64 + 0x2211cb)
  #13 0x00000000005002aa main (qemu-system-x86_64 + 0x1002aa)
  #14 0x00007fce8af21152 __libc_start_main (libc.so.6 + 0x28152)
  #15 0x000000000050087e _start (qemu-system-x86_64 + 0x10087e)

  The whole running command is pretty long, since I use libvirt to
  manage my machines:

  LC_ALL=C \
  PATH=/usr/local/sbin:/usr/local/bin:/usr/bin \
  HOME=/var/lib/libvirt/qemu/domain-2-Win10 \
  XDG_DATA_HOME=/var/lib/libvirt/qemu/domain-2-Win10/.local/share \
  XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain-2-Win10/.cache \
  XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain-2-Win10/.config \
  QEMU_AUDIO_DRV=spice \
  /usr/bin/qemu-system-x86_64 \
  -name guest=Win10,debug-threads=on \
  -S \
  -blockdev 
'{"driver":"file","filename":"/usr/share/edk2-ovmf/x64/OVMF_CODE.fd","node-name":"libvirt-pflash0-storage","auto-read-only":true,"discard":"unmap"}'
 \
  -blockdev 
'{"node-name":"libvirt-pflash0-format","read-only":true,"driver":"raw","file":"libvirt-pflash0-storage"}'
 \
  -blockdev 
'{"driver":"file","filename":"/var/lib/libvirt/qemu/nvram/Win10_VARS.fd","node-name":"libvirt-pflash1-storage","auto-read-only":true,"discard":"unmap"}'
 \
  -blockdev 
'{"node-name":"libvirt-pflash1-format","read-only":false,"driver":"raw","file":"libvirt-pflash1-storage"}'
 \
  -machine 
pc-q35-5.1,accel=kvm,usb=off,vmport=off,dump-guest-core=off,pflash0=libvirt-pflash0-format,pflash1=libvirt-pflash1-format
 \
  -cpu host,migratable=on,hv-time,hv-relaxed,hv-vapic,hv-spinlocks=0x1fff \
  -m 8192 \
  -overcommit mem-lock=off \
  -smp 2,sockets=2,cores=1,threads=1 \
  -uuid 7043c77b-4903-4527-8089-9679d9a17fee \
  -no-user-config \
  -nodefaults \
  -chardev stdio,mux=on,id=charmonitor \
  -mon chardev=charmonitor,id=monitor,mode=control \
  -rtc base=localtime,driftfix=slew \
  -global kvm-pit.lost_tick_policy=delay \
  -no-hpet \
  -no-shutdown \
  -global ICH9-LPC.disable_s3=1 \
  -global ICH9-LPC.disable_s4=1 \
  -boot strict=on \
  -device 
pcie-root-port,port=0x10,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x2
 \
  -device pcie-root-port,port=0x11,chassis=2,id=pci.2,bus=pcie.0,addr=0x2.0x1 \
  -device pcie-root-port,port=0x12,chassis=3,id=pci.3,bus=pcie.0,addr=0x2.0x2 \
  -device pcie-root-port,port=0x13,chassis=4,id=pci.4,bus=pcie.0,addr=0x2.0x3 \
  -device pcie-root-port,port=0x14,chassis=5,id=pci.5,bus=pcie.0,addr=0x2.0x4 \
  -device pcie-root-port,port=0x15,chassis=6,id=pci.6,bus=pcie.0,addr=0x2.0x5 \
  -device qemu-xhci,p2=15,p3=15,id=usb,bus=pci.2,addr=0x0 \
  -device virtio-serial-pci,id=virtio-serial0,bus=pci.3,addr=0x0 \
  -blockdev '{"driver":"file","filename":"/home/sergiy/VirtualBox 
VMs/win4games.img","node-name":"libvirt-2-storage","auto-read-only":true,"discard":"unmap"}'
 \
  -blockdev 
'{"node-name":"libvirt-2-format","read-only":false,"driver":"raw","file":"libvirt-2-storage"}'
 \
  -device ide-hd,bus=ide.0,drive=libvirt-2-format,id=sata0-0-0,bootindex=1 \
  -blockdev 
'{"driver":"file","filename":"/home/sergiy/Downloads/Win10_2004_Ukrainian_x64.iso","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}'
 \
  -blockdev 
'{"node-name":"libvirt-1-format","read-only":true,"driver":"raw","file":"libvirt-1-storage"}'
 \
  -device ide-cd,bus=ide.1,drive=libvirt-1-format,id=sata0-0-1 \
  -chardev pty,id=charserial0 \
  -device isa-serial,chardev=charserial0,id=serial0 \
  -chardev spicevmc,id=charchannel0,name=vdagent \
  -device 
virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0
 \
  -spice 
port=5900,addr=127.0.0.1,disable-ticketing,image-compression=off,seamless-migration=on
 \
  -device 
qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,vram64_size_mb=0,vgamem_mb=16,max_outputs=1,bus=pcie.0,addr=0x1
 \
  -chardev spicevmc,id=charredir0,name=usbredir \
  -device usb-redir,chardev=charredir0,id=redir0,bus=usb.0,port=1 \
  -chardev spicevmc,id=charredir1,name=usbredir \
  -device usb-redir,chardev=charredir1,id=redir1,bus=usb.0,port=2 \
  -device 
vfio-pci,host=0000:04:00.0,id=hostdev0,bus=pci.4,multifunction=on,addr=0x0 \
  -device vfio-pci,host=0000:04:00.1,id=hostdev1,bus=pci.4,addr=0x0.0x1 \
  -device virtio-balloon-pci,id=balloon0,bus=pci.5,addr=0x0 \
  -sandbox 
on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
  -msg timestamp=on

  I've forced vfio_pci module for the VGA, and ensured that lspci shows

    Kernel driver in use: vfio_pci

  My laptop is Thinkpad x230, that runs on Intel(R) Core(TM) i5-3320M CPU @ 
2.60GHz. 
  I run 5.8.6-1-MANJARO kernel and run QEMU emulator version 5.1.0.

  Thank you for your attention. I'd love to provide more information,
  but I don't know what else matters.

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