Hi,
I have a problem while trying to manage my physical Ethernet interface from
DPDK (latest version compiled from source).
I have a:
NIC: 0000:00:1f.6 Ethernet controller: Intel Corporation Ethernet
Connection (13) I219-LM (rev 20)

which belongs to the list of supported NICs in DPDK.

Also, I have bound my NICto vfio-pci, not the kernel:

dpdk-23.07$ usertools/dpdk-devbind.py --status
Network devices using DPDK-compatible driver
============================================ 0000:00:1f.6 'Ethernet
Connection (13) I219-LM 15fb' drv=vfio-pci unused=e1000e

I also enabled hugepages (2G).

when I enter "sudo build/app/dpdk-testpmd -c7 -- -i" I get:
EAL: Detected CPU lcores: 8
EAL: Detected NUMA nodes: 1
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: VFIO support initialized
TELEMETRY: No legacy callbacks, legacy socket not created
testpmd: No probed ethernet devices
Interactive-mode selected
testpmd: create a new mbuf pool <mb_pool_0>: n=163456, size=2176, socket=0
testpmd: preferred mempool ops selected: ring_mp_mc
Done
testpmd>

When I enter "show port info all" in the testpmd CLI I get nothing (no
ports).

When I start testpmd with "-a 0000:00:1f.6" (the address of the ethernet
NIC I want to manage from DPDK), The same happens (no ports).

If I try to start testpmd with "-d build/drivers/librte_net_e1000.so" (the
shared library of the driver of that device), I get a crash:

dpdk-23.07$ sudo build/app/dpdk-testpmd -c7 -a 0000:00:1f.6 -d
build/drivers/librte_net_e1000.so -- -i
EAL: Detected CPU lcores: 8
EAL: Detected NUMA nodes: 1
EAL: Detected static linkage of DPDK
EAL: UIO_RESOURCE_LIST tailq is already registered PANIC in
tailqinitfn_rte_uio_tailq(): Cannot initialize tailq: UIO_RESOURCE_LIST
0: build/app/dpdk-testpmd (rte_dump_stack+0x32) [55be1839afe2]
1: build/app/dpdk-testpmd (__rte_panic+0xf1) [55be18369e68]
2: /home/anton/tdr/dpdk-23.07/build/drivers/librte_bus_pci.so.23
(7f52153f6000+0x5d86) [7f52153fbd86]
3: /lib64/ld-linux-x86-64.so.2 (7f5215f90000+0x11b9a) [7f5215fa1b9a]
4: /lib64/ld-linux-x86-64.so.2 (7f5215f90000+0x11ca1) [7f5215fa1ca1]
5: /lib/x86_64-linux-gnu/libc.so.6 (_dl_catch_exception+0xe5)
[7f5215970985]
6: /lib64/ld-linux-x86-64.so.2 (7f5215f90000+0x160cf) [7f5215fa60cf]
7: /lib/x86_64-linux-gnu/libc.so.6 (_dl_catch_exception+0x88)
[7f5215970928]
8: /lib64/ld-linux-x86-64.so.2 (7f5215f90000+0x1560a) [7f5215fa560a]
9: /lib/x86_64-linux-gnu/libdl.so.2 (7f5215e15000+0x134c) [7f5215e1634c]
10: /lib/x86_64-linux-gnu/libc.so.6 (_dl_catch_exception+0x88)
[7f5215970928]
11: /lib/x86_64-linux-gnu/libc.so.6 (_dl_catch_error+0x33) [7f52159709f3]
12: /lib/x86_64-linux-gnu/libdl.so.2 (7f5215e15000+0x1b59) [7f5215e16b59]
13: /lib/x86_64-linux-gnu/libdl.so.2 (dlopen+0x4a) [7f5215e163da]
14: build/app/dpdk-testpmd (55be17b79000+0x8013ee) [55be1837a3ee]
15: build/app/dpdk-testpmd (eal_plugins_init+0x14f) [55be1837a6d8]
16: build/app/dpdk-testpmd (rte_eal_init+0x1af) [55be1839ec21]
17: build/app/dpdk-testpmd (main+0xde) [55be17da108b]
18: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf3) [7f5215834083]
19: build/app/dpdk-testpmd (_start+0x2e) [55be17cef1fe]
Aborted

I have also checked that:
I have IOMMU enabled:
cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-5.15.0-83-generic
root=UUID=3c080ff1-1c00-4b5c-aa00-2084f9e68794 ro i915.enable_psr=1 quiet
splash intel_iommu=on vt.handoff=7
and other virtualization flags enabled (VT-x, VT-d), and the Secure Boot is
disabled.
Also the NIC works fine in normal circumstances (managed by the OS kernel).

I am running Ubuntu 20.04.6 on a Dell Precision 3560 laptop (1 year old).

I don't know whether this is a bug or I missed something, so I would
appreciate any guidance. Thanks in advance

Anton