PVE 6.2 PCI passthrough error - unable to read tail (got 0 bytes)

ouxiang08

New Member
Aug 4, 2020
5
0
1
35
Hello, i'm experiencing PCIe passthrough (GTX1650) with the latest Proxmox 6.2 and kernel 5.4.44-2 (efi boot)
On 6.2 everything works but i boot a vm with passthrough again, i get 'unable to read tail (got 0 bytes)'

Here's a trace

g 15 15:39:15 debian-jia kernel: Code: 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 1e de ff ff 31 c0 65 48 8b 14 25 c0 6b 01 00 <f0> 48 0f b1 13 74 08 48 89 df e8 b4 ff ff ff 5b 5d c3 90 0f 1f 44

Aug 15 15:39:15 debian-jia kernel: RSP: 0018:ffffa04483ebf9a8 EFLAGS: 00010246
Aug 15 15:39:15 debian-jia kernel: RAX: 0000000000000000 RBX: 0000000000000048 RCX: 0000000000000000
Aug 15 15:39:15 debian-jia kernel: RDX: ffff933b5efd2e80 RSI: 0000000000000000 RDI: 0000000000000048
Aug 15 15:39:15 debian-jia kernel: RBP: ffffa04483ebf9b0 R08: 0000000000000009 R09: 0000000000000010
Aug 15 15:39:15 debian-jia kernel: R10: 0000000000000009 R11: ffff933ba6394a20 R12: ffff933bc3deb400
Aug 15 15:39:15 debian-jia kernel: R13: ffff933bcb1c4608 R14: ffff933bc283d400 R15: ffffa04483ebfb70
Aug 15 15:39:15 debian-jia kernel: FS: 00007f765d42b1c0(0000) GS:ffff933bcf080000(0000) knlGS:0000000000000000
Aug 15 15:39:15 debian-jia kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Aug 15 15:39:15 debian-jia kernel: CR2: 0000000000000048 CR3: 000000079c7c6000 CR4: 0000000000340ee0
Aug 15 15:39:15 debian-jia pvedaemon[4348]: <root@pam> end task UPID:debian-jia:00004614:0003DF67:5F37911F:qmstart:103:root@pam: unable to read tail (got 0 bytes)
Aug 15 15:39:33 debian-jia NetworkManager[928]: <info> [1597477173.8458] device (wlp7s0): set-hw-addr: set MAC address to AA:64:1F:C9:29:64 (scanning)



====================Hardware==========================

AMD Ryzen™ 7 PRO 4750G
ASROCK B550 Phantom Gaming-ITX/ax
GTX 1650
WD Blue 1T SN550 M2.0(NVMe)

===================PVE=========================

pveversion -v
proxmox-ve: 6.2-1 (running kernel: 5.4.44-2-pve)
pve-manager: 6.2-10 (running version: 6.2-10/a20769ed)
pve-kernel-5.4: 6.2-4
pve-kernel-helper: 6.2-4
pve-kernel-5.4.44-2-pve: 5.4.44-2
ceph-fuse: 14.2.10-pve1
corosync: 3.0.4-pve1
criu: 3.11-3
glusterfs-client: 5.5-3
ifupdown: 0.8.35+pve1
libjs-extjs: 6.0.1-10
libknet1: 1.16-pve1
libproxmox-acme-perl: 1.0.4
libpve-access-control: 6.1-2
libpve-apiclient-perl: 3.0-3
libpve-common-perl: 6.1-5
libpve-guest-common-perl: 3.1-2
libpve-http-server-perl: 3.0-6
libpve-storage-perl: 6.2-5
libqb0: 1.0.5-1
libspice-server1: 0.14.2-4~pve6+1
lvm2: 2.03.02-pve4
lxc-pve: 4.0.2-1
lxcfs: 4.0.3-pve
novnc-pve: 1.1.0-1
proxmox-mini-journalreader: 1.1-1
proxmox-widget-toolkit: 2.2-9
pve-cluster: 6.1-8
pve-container: 3.1-12
pve-docs: 6.2-5
pve-edk2-firmware: 2.20200531-1
pve-firewall: 4.1-2
pve-firmware: 3.1-1
pve-ha-manager: 3.0-9
pve-i18n: 2.1-3
pve-qemu-kvm: 5.0.0-11
pve-xtermjs: 4.3.0-1
qemu-server: 6.2-11
smartmontools: 7.1-pve2
spiceterm: 3.1-1
vncterm: 1.6-1
zfsutils-linux: 0.8.4-pve1



==================Qemu-Server===========================

root@debian-jia:/etc/pve/qemu-server# cat 103.conf
balloon: 0
bios: ovmf
bootdisk: scsi0
cores: 8
cpu: host
efidisk0: Win10:103/vm-103-disk-0.qcow2,size=128K
hostpci0: 01:00,pcie=1,x-vga=1
ide0: local:iso/virtio-win.iso,media=cdrom,size=423082K
ide2: local:iso/Win10_2004_Simplified_x64.iso,media=cdrom
machine: q35
memory: 16384
name: Win10-GTX1650
net0: virtio=C2:57:95:27:8B:6E,bridge=vmbr1
numa: 1
ostype: win10
scsi0: NVme1:vm-103-disk-0,backup=0,size=150G,ssd=1
scsihw: virtio-scsi-pci
smbios1: uuid=20ccae08-2e42-4405-a902-cf891e5777e2
sockets: 1
vmgenid: cbfae448-0d1e-4ac7-a444-c95fc0ba2693
 
Last edited:

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!