kernel bug with pci passthrough

[sweet-t]

I am attempting to pass my pci usb controller into my vm. It is a nvidia chipset card supporting reset and I have it plugged into my pci-x slot which I have had success passing through other pci devices in this slot. The iommu groups are fine for this slot.

When I attempt to start my VM it fails:

Status stopped: unable to read tail (got 0 bytes)

When I review my PVE syslog it appears to deregister the device (02:00) followed by a a kernel BUG.

Im not sure who to report this to or who is best to help me.

Dec 24 02:00:26 pve pvedaemon[5053]: start VM 106: UPID:pve:000013BD:0000DAF6:5A3F508A:qmstart:106:root@pam:
Dec 24 02:00:28 pve kernel: vfio-pci 0000:04:00.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem
Dec 24 02:00:28 pve kernel: vfio-pci 0000:04:00.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem
Dec 24 02:00:28 pve kernel: vfio-pci 0000:04:00.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem
Dec 24 02:00:28 pve systemd[1]: sound.target: Unit not needed anymore. Stopping.
Dec 24 02:00:28 pve systemd[1]: Stopped target Sound Card.
Dec 24 02:00:28 pve kernel: ehci-pci 0000:02:00.3: remove, state 4
Dec 24 02:00:28 pve kernel: usb usb3: USB disconnect, device number 1
Dec 24 02:00:28 pve kernel: ehci-pci 0000:02:00.3: USB bus 3 deregistered
Dec 24 02:00:28 pve kernel: ohci-pci 0000:02:00.1: remove, state 4
Dec 24 02:00:28 pve kernel: usb usb5: USB disconnect, device number 1
Dec 24 02:00:28 pve kernel: ohci-pci 0000:02:00.1: USB bus 5 deregistered
Dec 24 02:00:28 pve kernel: ohci-pci 0000:02:00.2: remove, state 4
Dec 24 02:00:28 pve kernel: usb usb6: USB disconnect, device number 1
Dec 24 02:00:28 pve kernel: ohci-pci 0000:02:00.2: USB bus 6 deregistered
Dec 24 02:00:28 pve kernel: ohci-pci 0000:02:00.0: remove, state 4
Dec 24 02:00:28 pve kernel: usb usb4: USB disconnect, device number 1
Dec 24 02:00:28 pve kernel: ------------[ cut here ]------------
Dec 24 02:00:28 pve kernel: kernel BUG at drivers/iommu/intel-iommu.c:3765!
Dec 24 02:00:28 pve kernel: invalid opcode: 0000 [#1] SMP
Dec 24 02:00:28 pve kernel: Modules linked in: veth ip_set ip6table_filter ip6_tables iptable_filter softdog nfnetlink_log nfnetlink dm_thin_pool dm_persistent_data dm_bio_prison dm_bufio zfs(PO) intel_powerclamp coretemp kvm_intel kvm zunicode(PO) zavl(PO) crct10dif_pclmul icp(PO) crc32_pclmul ghash_clmulni_intel pcbc snd_hda_codec_analog snd_hda_codec_generic aesni_intel aes_x86_64 snd_hda_codec_hdmi snd_hda_intel zcommon(PO) znvpair(PO) snd_hda_codec dell_wmi snd_hda_core dell_smbios spl(O) crypto_simd snd_hwdep mxm_wmi sparse_keymap gpio_ich snd_pcm glue_helper video cryptd snd_timer dcdbas input_leds snd dell_smm_hwmon serio_raw soundcore pcspkr ppdev wmi_bmof intel_cstate mac_hid i7core_edac lpc_ich shpchp parport_pc parport wmi ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi
Dec 24 02:00:28 pve kernel:  vhost_net sunrpc vhost tap ip_tables x_tables autofs4 xfs libcrc32c btrfs xor raid6_pq vfio_pci irqbypass vfio_virqfd vfio_iommu_type1 vfio pci_stub usbmouse hid_generic usbkbd usbhid hid mptsas mptscsih mptbase tg3 ahci ptp i2c_i801 libahci pps_core scsi_transport_sas
Dec 24 02:00:28 pve kernel: CPU: 1 PID: 5053 Comm: task UPID:pve:0 Tainted: P           O    4.13.8-1-pve #1
Dec 24 02:00:28 pve kernel: Hardware name: Dell Inc. Precision WorkStation T7500  /06FW8P, BIOS A16 05/28/2013
Dec 24 02:00:28 pve kernel: task: ffff98599902c200 task.stack: ffffba83da834000
Dec 24 02:00:28 pve kernel: RIP: 0010:intel_unmap+0x1f1/0x200
Dec 24 02:00:28 pve kernel: RSP: 0018:ffffba83da837cf0 EFLAGS: 00010246
Dec 24 02:00:28 pve kernel: RAX: 0000000000000000 RBX: 00000000ffffc000 RCX: ffffffff9ef98b10
Dec 24 02:00:28 pve kernel: RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff9859c65f90a0
Dec 24 02:00:28 pve kernel: RBP: ffffba83da837d28 R08: 0000000000000000 R09: 0000000180200009
Dec 24 02:00:28 pve kernel: R10: ffffba83da837cf8 R11: 0000000000000e00 R12: 00000000ffffffff
Dec 24 02:00:28 pve kernel: R13: 0000000000001000 R14: ffffffff9efdad08 R15: ffff9859c65f90a0
Dec 24 02:00:28 pve kernel: FS:  00007f54fa7952c0(0000) GS:ffff9859cae40000(0000) knlGS:0000000000000000
Dec 24 02:00:28 pve kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Dec 24 02:00:28 pve kernel: CR2: 00007f54fa5df408 CR3: 0000000be37a6000 CR4: 00000000000006e0
Dec 24 02:00:28 pve kernel: Call Trace:
Dec 24 02:00:28 pve kernel:  ? kfree+0x14a/0x160
Dec 24 02:00:28 pve kernel:  intel_free_coherent+0x5e/0x80
Dec 24 02:00:28 pve kernel:  ohci_stop+0x13d/0x190
Dec 24 02:00:28 pve kernel:  usb_remove_hcd+0xff/0x250
Dec 24 02:00:28 pve kernel:  usb_hcd_pci_remove+0x6f/0x140
Dec 24 02:00:28 pve kernel:  pci_device_remove+0x39/0xb0
Dec 24 02:00:28 pve kernel:  device_release_driver_internal+0x155/0x210
Dec 24 02:00:28 pve kernel:  device_release_driver+0x12/0x20
Dec 24 02:00:28 pve kernel:  unbind_store+0x10d/0x160
Dec 24 02:00:28 pve kernel:  drv_attr_store+0x25/0x30
Dec 24 02:00:28 pve kernel:  sysfs_kf_write+0x37/0x40
Dec 24 02:00:28 pve kernel:  kernfs_fop_write+0x120/0x1b0
Dec 24 02:00:28 pve kernel:  __vfs_write+0x18/0x40
Dec 24 02:00:28 pve kernel:  vfs_write+0xb5/0x1a0
Dec 24 02:00:28 pve kernel:  SyS_write+0x55/0xc0
Dec 24 02:00:28 pve kernel:  ? SyS_fcntl+0x80/0xb0
Dec 24 02:00:28 pve kernel:  entry_SYSCALL_64_fastpath+0x1e/0xa9
Dec 24 02:00:28 pve kernel: RIP: 0033:0x7f54f9e6b190
Dec 24 02:00:28 pve kernel: RSP: 002b:00007ffc793900b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
Dec 24 02:00:28 pve kernel: RAX: ffffffffffffffda RBX: 000000000000000e RCX: 00007f54f9e6b190
Dec 24 02:00:28 pve kernel: RDX: 000000000000000c RSI: 0000561ea9a2d820 RDI: 000000000000000e
Dec 24 02:00:28 pve kernel: RBP: 0000561ea410c010 R08: 0000000000000000 R09: 0000561ea450fbf0
Dec 24 02:00:28 pve kernel: R10: 0000561ea42b3e80 R11: 0000000000000246 R12: 0000561ea9a05e60
Dec 24 02:00:28 pve kernel: R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Dec 24 02:00:28 pve kernel: Code: ff 49 8d bc 24 18 03 00 00 4c 89 ea 4c 89 f6 e8 e6 07 ff ff 48 89 df e8 1e ae ff ff 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <0f> 0b 49 8b 57 10 eb 8a 0f 1f 80 00 00 00 00 66 66 66 66 90 55 
Dec 24 02:00:28 pve kernel: RIP: intel_unmap+0x1f1/0x200 RSP: ffffba83da837cf0
Dec 24 02:00:28 pve kernel: ---[ end trace 8143b932e8aa06f7 ]---
Dec 24 02:00:28 pve pvedaemon[2144]: <root@pam> end task UPID:pve:000013BD:0000DAF6:5A3F508A:qmstart:106:root@pam: unable to read tail (got 0 bytes)

proxmox-ve: 5.1-27 (running kernel: 4.13.8-1-pve) 
pve-manager: 5.1-36 (running version: 5.1-36/131401db) 
pve-kernel-4.10.15-1-pve: 4.10.15-15 
pve-kernel-4.13.8-1-pve: 4.13.8-27 
libpve-http-server-perl: 2.0-6 
lvm2: 2.02.168-pve6 
corosync: 2.4.2-pve3 
libqb0: 1.0.1-1 
pve-cluster: 5.0-15 
qemu-server: 5.0-17 
pve-firmware: 2.0-3 
libpve-common-perl: 5.0-20 
libpve-guest-common-perl: 2.0-13 
libpve-access-control: 5.0-7 
libpve-storage-perl: 5.0-16 
pve-libspice-server1: 0.12.8-3 
vncterm: 1.5-2 
pve-docs: 5.1-12 
pve-qemu-kvm: 2.9.1-1 
pve-container: 2.0-17 
pve-firewall: 3.0-3 
pve-ha-manager: 2.0-3 
ksm-control-daemon: 1.2-2 
glusterfs-client: 3.8.8-1 
lxc-pve: 2.1.0-2 
lxcfs: 2.0.7-pve4 criu: 2.11.1-1~bpo90 
novnc-pve: 0.6-4 
smartmontools: 6.5+svn4324-1 
zfsutils-linux: 0.7.3-pve1~bpo9

 

[wji9na]

Did u get any progress? I've got the same error but on the process of installing Win10 to Guest on PVE 5