Bug 47331 - e1000: Detected Tx Unit Hang - network is not operational
Summary: e1000: Detected Tx Unit Hang - network is not operational
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: Network (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: drivers_network@kernel-bugs.osdl.org
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-09-10 19:51 UTC by Khomutov Vladimir
Modified: 2022-08-25 07:45 UTC (History)
32 users (show)

See Also:
Kernel Version: 3.5.3
Tree: Mainline
Regression: No


Attachments
dmesg (1.96 KB, text/plain)
2012-09-10 19:51 UTC, Khomutov Vladimir
Details
ethtool (1.20 KB, text/plain)
2012-09-10 19:52 UTC, Khomutov Vladimir
Details
kernel config (91.25 KB, text/plain)
2012-09-10 19:52 UTC, Khomutov Vladimir
Details
lshw (25.38 KB, text/plain)
2012-09-10 19:52 UTC, Khomutov Vladimir
Details
lspci -vvv (41.34 KB, text/plain)
2012-09-10 19:53 UTC, Khomutov Vladimir
Details
uname (131 bytes, text/plain)
2012-09-10 19:53 UTC, Khomutov Vladimir
Details
dmesg output with verbose settings on (26.17 KB, text/plain)
2012-10-25 05:01 UTC, Khomutov Vladimir
Details
lspci -vvv after the issue occured (40.12 KB, text/plain)
2012-10-25 05:04 UTC, Khomutov Vladimir
Details
lspci -vvv after reboot (no issues) (40.10 KB, text/plain)
2012-10-25 17:52 UTC, Khomutov Vladimir
Details
kernel log with full dump of registers after the issue (148.67 KB, text/x-log)
2012-10-25 17:53 UTC, Khomutov Vladimir
Details
logs demonstrating the issue with 3.7.9 and 2 gig of ram (133.01 KB, application/x-gzip)
2013-02-27 20:30 UTC, Khomutov Vladimir
Details
dmesg (31.85 KB, text/plain)
2015-02-10 23:02 UTC, abandoned account
Details

Description Khomutov Vladimir 2012-09-10 19:51:47 UTC
Created attachment 79641 [details]
dmesg

Under any significant load the driver starts producing
detected Tx Unit hang messages and resets adapter, thus
networking is not really usable.
By significant load i mean an attempt to download big (>2 Mb) 
file over ssh. 
Please see attached files for system details.
The bug is 100% reproducible.

It looks like the problem is known for a long time, but
there is some mess with linux e1000 drivers: it looks
like kernel contains 7.x version (alive) and there is 
8.x version by intel on sourceforge (not maintained
and doesn't compile for newer kernels). A lot of suggestions
are about intel's version of the driver.
Please sched some light on the situation with e1000 in linux...
Comment 1 Khomutov Vladimir 2012-09-10 19:52:14 UTC
Created attachment 79651 [details]
ethtool
Comment 2 Khomutov Vladimir 2012-09-10 19:52:32 UTC
Created attachment 79661 [details]
kernel config
Comment 3 Khomutov Vladimir 2012-09-10 19:52:54 UTC
Created attachment 79671 [details]
lshw
Comment 4 Khomutov Vladimir 2012-09-10 19:53:18 UTC
Created attachment 79681 [details]
lspci -vvv
Comment 5 Khomutov Vladimir 2012-09-10 19:53:37 UTC
Created attachment 79691 [details]
uname
Comment 6 Stefan de Konink 2012-10-16 20:08:27 UTC
I want to confirm this also happened to me today using 3.3.1-gentoo after 192 days of uptime, while the system was _not_ under any significant load.

e1000 0000:01:03.0: eth0: Detected Tx Unit Hang
  Tx Queue             <0>
  TDH                  <bd>
  TDT                  <bd>
  next_to_use          <bd>
  next_to_clean        <73>
buffer_info[next_to_clean]
  time_stamp           <5fd26739>
  next_to_watch        <74>
  jiffies              <5fd267fb>
  next_to_watch.status <0>
e1000 0000:01:03.0: eth0: Detected Tx Unit Hang
  Tx Queue             <0>
  TDH                  <bd>
  TDT                  <bd>
  next_to_use          <bd>
  next_to_clean        <73>
buffer_info[next_to_clean]
  time_stamp           <5fd26739>
  next_to_watch        <74>
  jiffies              <5fd268c3>
  next_to_watch.status <0>
e1000 0000:01:03.0: eth0: Detected Tx Unit Hang
  Tx Queue             <0>
  TDH                  <bd>
  TDT                  <bd>
  next_to_use          <bd>
  next_to_clean        <73>
buffer_info[next_to_clean]
  time_stamp           <5fd26739>
  next_to_watch        <74>
  jiffies              <5fd2698b>
  next_to_watch.status <0>
------------[ cut here ]------------
WARNING: at net/sched/sch_generic.c:256 dev_watchdog+0x1b3/0x1bc()
Hardware name: PowerEdge 650              
NETDEV WATCHDOG: eth0 (e1000): transmit queue 0 timed out
Modules linked in: usb_storage usb_libusual xt_comment nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack xt_tcpudp iptable_filter ip_tables x_tables ohci_hcd usbcore usb_common
Pid: 0, comm: swapper Not tainted 3.3.1-gentoo #3
Call Trace:
 [<c101fa16>] warn_slowpath_common+0x67/0x8e
 [<c123d824>] ? dev_watchdog+0x1b3/0x1bc
 [<c123d824>] ? dev_watchdog+0x1b3/0x1bc
 [<c101fab9>] warn_slowpath_fmt+0x2e/0x30
 [<c123d824>] dev_watchdog+0x1b3/0x1bc
 [<c102a8d1>] run_timer_softirq+0xfb/0x28a
 [<c123d671>] ? netif_carrier_off+0x26/0x26
 [<c102461b>] __do_softirq+0x72/0x14a
 [<c10245a9>] ? __tasklet_hi_schedule_first+0x4b/0x4b
 <IRQ>  [<c102485f>] ? irq_exit+0x64/0x85
 [<c100395d>] ? do_IRQ+0x3d/0x84
 [<c12b6029>] ? common_interrupt+0x29/0x30
 [<c10082b3>] ? default_idle+0x4d/0x129
 [<c100167f>] ? cpu_idle+0x40/0x63
 [<c12aa515>] ? rest_init+0x55/0x60
 [<c13ce607>] ? start_kernel+0x24c/0x252
 [<c13ce13f>] ? loglevel+0x2b/0x2b
 [<c13ce044>] ? i386_start_kernel+0x44/0x46
---[ end trace 7a625de8614c18af ]---
Comment 7 Tushar 2012-10-23 22:10:55 UTC
Set the current msglvl by 'ethtool -s ethx msglvl 0x2c01' so driver will print hw ring info when problem occurs.
Please submit full dmesg log  and lspci -vvv output after issue occurs.

-Tushar
Comment 8 Khomutov Vladimir 2012-10-25 05:01:50 UTC
Created attachment 84761 [details]
dmesg output with verbose settings on
Comment 9 Khomutov Vladimir 2012-10-25 05:04:01 UTC
Created attachment 84771 [details]
lspci -vvv after the issue occured
Comment 10 Tushar 2012-10-25 05:14:25 UTC
dmesg log seems to be overwritten. It does not contain tx ring info. If you have not attached full dmesg please attach.

I do see PCI Master Abort error in lspci. 
07:03.0 Ethernet controller: Intel Corporation 82541PI Gigabit Ethernet 	Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
             ^^

You may need to freshly boot system and dump lspci -vvv before and after tx hang occurs to confirm that MAbort is the cause.
Comment 11 Khomutov Vladimir 2012-10-25 17:52:36 UTC
Created attachment 84821 [details]
lspci -vvv after reboot (no issues)
Comment 12 Khomutov Vladimir 2012-10-25 17:53:43 UTC
Created attachment 84831 [details]
kernel log with full dump of registers after the issue
Comment 13 Tushar 2012-10-25 23:25:19 UTC
So looking at lspci -vvv before and after confirms that root cause of the tx hang is PCI MAbort. (For some reason I don't see TX descriptor ring dump logged in dmesg log.)

Looks like system has 8GB RAM. Can you test with only 2 GB ram and see if issue occurs?
Comment 14 Stefan de Konink 2012-10-25 23:28:13 UTC
My problem was on a much older system, with only 1.5GB of RAM. Doubt that is related.
Comment 15 Tushar 2012-10-25 23:33:14 UTC
Was this working at all before and start appearing with kernel upgrade?
Comment 16 Khomutov Vladimir 2012-10-26 10:08:05 UTC
(In reply to comment #13)
 
> Looks like system has 8GB RAM. Can you test with only 2 GB ram and see if
> issue
> occurs?

When I've just installed the hardware and hit the issue, I spent some time
looking for solution, and one of possible causes named was ram > 4 G, so I've
tried with 4 G and the result was the same. Can't remember if I've tried with
2G. Anyway, I need it working with 8G.
Comment 17 Tushar 2012-11-01 20:53:44 UTC
pci bus trace would be very helpful to find out cause of Mabort error. Do you have facility to capture bus trace?

If not then can you send me the dmesg log again with Tx ring info.
(Last time you sent dmesg log - Comment #12, it has not dumped the tx ring. Make sure msglvl is set to value 0x2c01 - 'ethtool -s ethx msglvl 0x2c01')
Comment 18 Khomutov Vladimir 2012-11-01 21:01:27 UTC
I have no idea how to get PCI bus trace.
If it does not require some special hardware, I can try if you explain how.

I don't know why kernel didn't dump TX ring, since I've entered 
command 'ethtool -s ethx msglvl 0x2c01' and the result was that
there were a lot of verbose messages from driver, not just errors.

I thought that this line was one marking start of what you are looking for:

>> Oct 25 21:22:13 myhost kernel: e1000: Tx descriptor cache in 64bit format
Comment 19 Phil 2012-11-19 18:21:37 UTC
I upgraded a number of boxes using 82546GB from 3.1.x kernels to 3.6.x recently, and a number of them have started having these TX hangs regularly.  So what changed between 3.1 and 3.6 to cause this?  Any output I can provide which would assist?
Comment 20 Stefan de Konink 2012-11-19 18:27:19 UTC
With my report regarding 3.3.1 we can reduce that to: what happened between 3.1 and 3.3.1.
Comment 21 ulf kypke 2013-01-10 15:06:37 UTC
hey,
i have this at kernel 2.6 as well as with kernel 3.3.8
i use openwrt on a router with 5 intel e1000 and e1000e cards.
most of this routers have 1 or 2 gb ram
this bug happens after aprox. 5 hours of running, does not matter if there is a lot of traffic or not.
i can reproduce this bug on various kernel versions, but with kernel 3.3.8 it happens way more often then with kernel 2.6
g i also posted this bug @ 52571 (sorry for crossposting)

best ulf
Comment 22 Tushar 2013-01-10 21:22:57 UTC
(In reply to comment #18)
> I have no idea how to get PCI bus trace.
> If it does not require some special hardware, I can try if you explain how.
> I don't know why kernel didn't dump TX ring, since I've entered 
> command 'ethtool -s ethx msglvl 0x2c01' and the result was that
> there were a lot of verbose messages from driver, not just errors.

Yes please send me the full dmesg log taken.
> I thought that this line was one marking start of what you are looking for:
> >> Oct 25 21:22:13 myhost kernel: e1000: Tx descriptor cache in 64bit format

 
Would you also please try disabling tso with 'ethtool -K ethx tso off'. See if that makes any difference. Meanwhile I will see if I get hold off similar system as yours and can reproduce issue locally.
Comment 23 Rich Ercolani 2013-02-06 23:42:44 UTC
So this looks a lot like the problem I once had with these cards.

http://sourceforge.net/p/e1000/bugs/266/ is the relevant bug report.

Verbatim quote from the bug report at the time, though it seems to be gone from the updated version (sf.net migrated bug trackers I suppose):

"We were able to reproduce this bug here, and verify that the system in
question has a cache coherency problem.  the driver is correctly updating
the system memory and then requesting hardware to DMA the data.  When the
hardware DMA request is completed by the memory controller, the data in
question is stale (the value prior to the update) and then the software
suffers an apparent "tx hang"

We are still investigating if there is a fix possible."

I believe they eventually did indeed have a fix in the 8.x series - at least, at some point I downloaded it and used it, and the problem went away.

The motherboard being Intel-branded implies it probably isn't a crap board with cache coherency bugs...one hopes, at least.  But that is the same era of hardware we had these problems on.
Comment 24 Tushar 2013-02-06 23:43:13 UTC
I am on vacation 02/06

-Tushar
Comment 25 Khomutov Vladimir 2013-02-27 20:30:05 UTC
we all hope vacation was great =))

but ack on topic:

1) I was able to reproduce the problem with kernel 3.7.9
2) The problem is 100% reproducible with 2 gig of RAM
3) Turning tso off doesn't help
4) I was able to get full logs with "ethtool -s ethx msglvl 0x2c01"

I'm attaching tarball with logs (kernel log, lscpi and some other related information) for all this cases.
Comment 26 Khomutov Vladimir 2013-02-27 20:30:42 UTC
Created attachment 94201 [details]
logs demonstrating the issue with 3.7.9 and 2 gig of ram
Comment 27 abandoned account 2015-02-10 23:02:13 UTC
Created attachment 166421 [details]
dmesg

I got this same thing, unexpectedly, inside virtualbox(8GB RAM) with kernel 3.16.5-gentoo (found on install-amd64-minimal-20141204.iso)
Comment 28 peter.eldridge.bailey 2016-03-09 05:36:49 UTC
I am also affected by this on 4.4.0-1-686-pae #1 SMP Debian 4.4.2-3 (2016-02-21).
Comment 29 Victor Pablos Ceruelo 2016-05-16 15:58:53 UTC
Me too, Ubuntu 4.4.0-22.39-generic 4.4.8 + Intel(R) PRO/1000 Network Driver - 3.2.6-k

Trying now with options:

ethtool -K eno1 gso off gro off tso off
ethtool -s eno1 msglvl 0x2c01
ethtool --set-eee eno1 eee off
ethtool --set-eee eno1 advertise 0

Not tried yet to disable Active-State Power Management (boot option):

pcie_aspm=off

Seems to be the link goes off/on at some times, but no more details in dmesg.

Thinking into forcing the network adapter to work at 100Mb speed ...
Comment 30 Victor Pablos Ceruelo 2016-05-16 16:39:17 UTC
Hi again.

It seems to be the problem is fixed by setting the options I wrote before and reducing the speed to 100 Mb. 

ethtool -s eno1 speed 100 duplex full

I've been 1/2h downloading at 600Kb-1Mb.
At home I do not need more, but it could be interesting to know why ...

There are more ideas around, like 

ethtool -K eno1 gso off gro off tso off lro off

and upgrading to e1000e-3.3.3

https://communities.intel.com/thread/70244
https://downloadcenter.intel.com/download/15817/Network-Adapter-Driver-for-PCI-E-Gigabit-Network-Connections-under-Linux-?v=t

Hope it helps others ...
Comment 31 Till Schäfer 2018-03-01 13:29:19 UTC
I can confirm the issue with gentoo sources 4.15.2 on a C220 chipset under heavy load (> 500 Mbit / adapter hangs up every few seconds). I can also confirm, that the following workaround helps. The only popped up recently after using the hardware without any problem up to recent kernels. 

ethtool -K eno1 gso off gro off tso off



00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection I217-LM [8086:153a] (rev 05)
        Subsystem: ASUSTeK Computer Inc. Ethernet Connection I217-LM [1043:8535]
        Flags: bus master, fast devsel, latency 0, IRQ 27
        Memory at f7d00000 (32-bit, non-prefetchable) [size=128K]
        Memory at f7d35000 (32-bit, non-prefetchable) [size=4K]
        I/O ports at f080 [size=32]
        Capabilities: [c8] Power Management version 2
        Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [e0] PCI Advanced Features
        Kernel driver in use: e1000e
Comment 32 Nikolay Kichukov 2019-08-16 13:15:21 UTC
After a recent kernel upgrade to 5.2.8 on GNU/Gentoo Linux I started to experience the same problem. This is observed on Dell Precision Tower 5810 with x86_64 kernel.

This also seems to be a regression, as the issue was not there at least on the below earlier kernels: 

kernel-genkernel-x86_64-4.19.27-gentoo-r1
kernel-genkernel-x86_64-5.0.5-gentoo
kernel-genkernel-x86_64-5.0.7-gentoo
kernel-genkernel-x86_64-5.0.10-gentoo
kernel-genkernel-x86_64-5.1.0-gentoo
kernel-genkernel-x86_64-5.1.3-gentoo
kernel-genkernel-x86_64-5.1.7-gentoo
kernel-genkernel-x86_64-5.1.11-gentoo

Same ethernet driver from kernel 5.2.8 is in use on a Dell Latitude laptop and the problem has not yet shown, thus this seems to be hardware related.

On the Precision Tower 5810, disabling the segmentation offloading with:
ethtool -K enp0s25 gso off gro off tso off

does seem to provide relief.

Thanks!
-N
Comment 33 Nikolay Kichukov 2019-08-16 13:17:15 UTC
I overlooked the kernel driver name as originally reported in year 2012, I use 'e1000e' kernel driver nowadays, not 'e1000'.
Comment 34 SB 2019-09-15 12:55:16 UTC
This is still an issue.

I'm running OpenWRT with Kernel 4.14.131.  Any reasonable load on the Intel onboard I217LM NIC causes it to hardware fault repeatedly. 

[  917.996439] e1000e 0000:00:19.0 eth0: Detected Hardware Unit Hang:
[  917.996439]   TDH                  <db>
[  917.996439]   TDT                  <f1>
[  917.996439]   next_to_use          <f1>
[  917.996439]   next_to_clean        <db>
[  917.996439] buffer_info[next_to_clean]:
[  917.996439]   time_stamp           <10000efce>
[  917.996439]   next_to_watch        <db>
[  917.996439]   jiffies              <10000f168>
[  917.996439]   next_to_watch.status <0>
[  917.996439] MAC Status             <80083>
[  917.996439] PHY Status             <796d>
[  917.996439] PHY 1000BASE-T Status  <3800>
[  917.996439] PHY Extended Status    <3000>
[  917.996439] PCI Status             <10>

I can confirm the "ethtool -K enp0s25 gso off gro off tso off" workaround does indeed appear to work.
Comment 35 SB 2019-09-15 13:29:02 UTC
I have this running and repeatable on a test-rig if there are any diagnostics that would be useful.
Comment 36 Charles Curley 2019-11-21 21:46:59 UTC
Still an issue for me also. I'm running on a single board computer w/ a 3 network PC/104+ card and getting these errors like crazy. 

[Thu Nov 21 21:08:35 2019] perf: interrupt took too long (5094 > 5083), lowering kernel.perf_event_max_sample_rate to 39000
[Thu Nov 21 21:09:48 2019] e1000 0000:03:06.0 eth-lcs: Detected Tx Unit Hang
                             Tx Queue             <0>
                             TDH                  <6d>
                             TDT                  <6d>
                             next_to_use          <6d>
                             next_to_clean        <5b>
                           buffer_info[next_to_clean]
                             time_stamp           <1002a3b17>
                             next_to_watch        <5c>
                             jiffies              <1002a3d00>
                             next_to_watch.status <0>
[Thu Nov 21 21:09:50 2019] e1000 0000:03:06.0 eth-lcs: Detected Tx Unit Hang
                             Tx Queue             <0>
                             TDH                  <6d>
                             TDT                  <6d>
                             next_to_use          <6d>
                             next_to_clean        <5b>
                           buffer_info[next_to_clean]
                             time_stamp           <1002a3b17>
                             next_to_watch        <5c>
                             jiffies              <1002a3f80>
                             next_to_watch.status <0>
[Thu Nov 21 21:09:52 2019] e1000 0000:03:06.0 eth-lcs: Detected Tx Unit Hang
                             Tx Queue             <0>
                             TDH                  <6d>
                             TDT                  <6d>
                             next_to_use          <6d>
                             next_to_clean        <5b>
                           buffer_info[next_to_clean]
                             time_stamp           <1002a3b17>
                             next_to_watch        <5c>
                             jiffies              <1002a4200>
                             next_to_watch.status <0>
[Thu Nov 21 21:09:54 2019] e1000 0000:03:06.0 eth-lcs: Detected Tx Unit Hang
                             Tx Queue             <0>
                             TDH                  <6d>
                             TDT                  <6d>
                             next_to_use          <6d>
                             next_to_clean        <5b>
                           buffer_info[next_to_clean]
                             time_stamp           <1002a3b17>
                             next_to_watch        <5c>
                             jiffies              <1002a4480>
                             next_to_watch.status <0>
[Thu Nov 21 21:09:55 2019] e1000 0000:03:06.0 eth-lcs: Reset adapter
[Thu Nov 21 21:10:00 2019] e1000: eth-lcs NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
Comment 37 Jonathan Bisson 2020-06-05 15:09:20 UTC
Kernel Version impacted
-----------------------
5.4.43 and 5.6.15

Trigger
-------

On heavy network use (so the bug may be much older than the kernels I found it in).

Consequence
-----------
 I get random packet drops and packets with wrong data (for example checksums of some downloaded files fail)

Log
---

###dmesg
[68832.822344] e1000e 0000:00:19.0 enp0s25: Detected Hardware Unit Hang:
                 TDH                  <23>
                 TDT                  <42>
                 next_to_use          <42>
                 next_to_clean        <23>
               buffer_info[next_to_clean]:
                 time_stamp           <10139b38b>
                 next_to_watch        <24>
                 jiffies              <10139b540>
                 next_to_watch.status <0>
               MAC Status             <80083>
               PHY Status             <796d>
               PHY 1000BASE-T Status  <3800>
               PHY Extended Status    <3000>
               PCI Status             <10>
[68834.742296] e1000e 0000:00:19.0 enp0s25: Detected Hardware Unit Hang:
                 TDH                  <23>
                 TDT                  <42>
                 next_to_use          <42>
                 next_to_clean        <23>
               buffer_info[next_to_clean]:
                 time_stamp           <10139b38b>
                 next_to_watch        <24>
                 jiffies              <10139b780>
                 next_to_watch.status <0>
               MAC Status             <80083>
               PHY Status             <796d>
               PHY 1000BASE-T Status  <3800>
               PHY Extended Status    <3000>
               PCI Status             <10>
[68836.662275] e1000e 0000:00:19.0 enp0s25: Detected Hardware Unit Hang:
                 TDH                  <23>
                 TDT                  <42>
                 next_to_use          <42>
                 next_to_clean        <23>
               buffer_info[next_to_clean]:
                 time_stamp           <10139b38b>
                 next_to_watch        <24>
                 jiffies              <10139b9c0>
                 next_to_watch.status <0>
               MAC Status             <80083>
               PHY Status             <796d>
               PHY 1000BASE-T Status  <3800>
               PHY Extended Status    <3000>
               PCI Status             <10>
[68838.796845] e1000e 0000:00:19.0 enp0s25: Detected Hardware Unit Hang:
                 TDH                  <23>
                 TDT                  <42>
                 next_to_use          <42>
                 next_to_clean        <23>
               buffer_info[next_to_clean]:
                 time_stamp           <10139b38b>
                 next_to_watch        <24>
                 jiffies              <10139bc40>
                 next_to_watch.status <0>
               MAC Status             <80083>
               PHY Status             <796d>
               PHY 1000BASE-T Status  <3800>
               PHY Extended Status    <3000>
               PCI Status             <10>
[68839.648816] e1000e 0000:00:19.0 enp0s25: Reset adapter unexpectedly
[68843.384565] e1000e 0000:00:19.0 enp0s25: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx

###


Temporary solution
------------------
It is solved with: 
ethtool -K enp0s25 tso off gso off


HW info (lshw)
--------------
*-network
             description: Ethernet interface
             product: Ethernet Connection (3) I218-LM
             vendor: Intel Corporation
             physical id: 19
             bus info: pci@0000:00:19.0
             logical name: enp0s25
             version: 03
             serial: <SNIP>
             size: 1Gbit/s
             capacity: 1Gbit/s
             width: 32 bits
             clock: 33MHz
             capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
             configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k duplex=full firmware=0.2-4 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
             resources: irq:48 memory:c1300000-c131ffff memory:c133d000-c133dfff ioport:5080(size=32)


HW info (lspci)
---------------

00:19.0 Ethernet controller: Intel Corporation Ethernet Connection (3) I218-LM (rev 03)
	Subsystem: Hewlett-Packard Company Ethernet Connection (3) I218-LM
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 48
	Region 0: Memory at c1300000 (32-bit, non-prefetchable) [size=128K]
	Region 1: Memory at c133d000 (32-bit, non-prefetchable) [size=4K]
	Region 2: I/O ports at 5080 [disabled] [size=32]
	Capabilities: [c8] Power Management version 2
		Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=1 PME-
	Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
		Address: 00000000fee00358  Data: 0000
	Capabilities: [e0] PCI Advanced Features
		AFCap: TP+ FLR+
		AFCtrl: FLR-
		AFStatus: TP-
	Kernel driver in use: e1000e
	Kernel modules: e1000e
Comment 38 Thomas Clark 2020-09-07 20:46:26 UTC
Running kernel 5.8.4, I am seeing the same errors.

Sep 06 22:30:10 kernel: e1000e 0000:00:19.0 eno1: Detected Hardware Unit Hang:
                                                 TDH                  <39>
                                                 TDT                  <60>
                                                 next_to_use          <60>
                                                 next_to_clean        <38>
                                               buffer_info[next_to_clean]:
                                                 time_stamp           <1030819ce>
                                                 next_to_watch        <39>
                                                 jiffies              <103082240>
                                                 next_to_watch.status <0>
                                               MAC Status             <80083>
                                               PHY Status             <796d>
                                               PHY 1000BASE-T Status  <3800>
                                               PHY Extended Status    <3000>
                                               PCI Status             <10>
Sep 06 22:30:12 kernel: e1000e 0000:00:19.0 eno1: Detected Hardware Unit Hang:
                                                 TDH                  <39>
                                                 TDT                  <60>
                                                 next_to_use          <60>
                                                 next_to_clean        <38>
                                               buffer_info[next_to_clean]:
                                                 time_stamp           <1030819ce>
                                                 next_to_watch        <39>
                                                 jiffies              <103082a00>
                                                 next_to_watch.status <0>
                                               MAC Status             <80083>
                                               PHY Status             <796d>
                                               PHY 1000BASE-T Status  <3800>
                                               PHY Extended Status    <3000>
                                               PCI Status             <10>
Sep 06 22:30:14 kernel: e1000e 0000:00:19.0 eno1: Detected Hardware Unit Hang:
                                                 TDH                  <39>
                                                 TDT                  <60>
                                                 next_to_use          <60>
                                                 next_to_clean        <38>
                                               buffer_info[next_to_clean]:
                                                 time_stamp           <1030819ce>
                                                 next_to_watch        <39>
                                                 jiffies              <103083200>
                                                 next_to_watch.status <0>
                                               MAC Status             <80083>
                                               PHY Status             <796d>
                                               PHY 1000BASE-T Status  <3800>
                                               PHY Extended Status    <3000>
                                               PCI Status             <10>
Sep 06 22:30:16 kernel: e1000e 0000:00:19.0 eno1: Detected Hardware Unit Hang:
                                                 TDH                  <39>
                                                 TDT                  <60>
                                                 next_to_use          <60>
                                                 next_to_clean        <38>
                                               buffer_info[next_to_clean]:
                                                 time_stamp           <1030819ce>
                                                 next_to_watch        <39>
                                                 jiffies              <1030839c0>
                                                 next_to_watch.status <0>
                                               MAC Status             <80083>
                                               PHY Status             <796d>
                                               PHY 1000BASE-T Status  <3800>
                                               PHY Extended Status    <3000>
                                               PCI Status             <10>
Sep 06 22:30:17 kernel: NETDEV WATCHDOG: eno1 (e1000e): transmit queue 0 timed out
Sep 06 22:30:17 kernel:  snd_intel_dspcfg snd_hda_codec snd_hda_core snd_hwdep snd_seq snd_seq_device at24 snd_pcm snd_timer i2c_i801 snd intel_pch_thermal lpc_ich mei_me i2c_sm>
Sep 06 22:30:17 kernel: e1000e 0000:00:19.0 eno1: Reset adapter unexpectedly
Sep 06 22:30:20 kernel: e1000e 0000:00:19.0 eno1: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
Comment 39 sshaikh 2020-12-24 20:53:21 UTC
Same issue in 5.4.78, except that the workaround of:

ethtool -K enp0s25 tso off gso off

Doesn't seem to apply (they are already off and "fixed")
Comment 40 Robert Dinse 2021-09-02 11:18:33 UTC
I had hoped hardware offloading would be fixed in 5.14.0, but no, this driver is still thoroughly fuxored. I got around this on my other servers by installing an ethernet card with a marvel chipset, but unfortunately that card conflicts with an iomemory-vsl flash card I have in this machine and need so that solution doesn't work.  For now I've disabled hardware offloading again but would really like this to be fixed.  You would think a bug on common hardware that is eight years old would be addressed.
Comment 41 Robert Dinse 2021-09-02 11:30:03 UTC
(In reply to Robert Dinse from comment #40)
> I had hoped hardware offloading would be fixed in 5.14.0, but no, this
> driver is still thoroughly fuxored. I got around this on my other servers by
> installing an ethernet card with a marvel chipset, but unfortunately that
> card conflicts with an iomemory-vsl flash card I have in this machine and
> need so that solution doesn't work.  For now I've disabled hardware
> offloading again but would really like this to be fixed.  You would think a
> bug on common hardware that is eight years old would be addressed.

[13762.953724] e1000e 0000:00:19.0 eno1: Detected Hardware Unit Hang:
                 TDH                  <1f>
                 TDT                  <6f>
                 next_to_use          <6f>
                 next_to_clean        <1e>
               buffer_info[next_to_clean]:
                 time_stamp           <10014897b>
                 next_to_watch        <1f>
                 jiffies              <100148a88>
                 next_to_watch.status <0>
               MAC Status             <80083>
               PHY Status             <796d>
               PHY 1000BASE-T Status  <3800>
               PHY Extended Status    <3000>
               PCI Status             <10>
[13764.953680] e1000e 0000:00:19.0 eno1: Detected Hardware Unit Hang:
                 TDH                  <1f>
                 TDT                  <6f>
                 next_to_use          <6f>
                 next_to_clean        <1e>
               buffer_info[next_to_clean]:
                 time_stamp           <10014897b>
                 next_to_watch        <1f>
                 jiffies              <100148b50>
                 next_to_watch.status <0>
               MAC Status             <80083>
               PHY Status             <796d>
               PHY 1000BASE-T Status  <3800>
               PHY Extended Status    <3000>
               PCI Status             <10>
[13766.953901] e1000e 0000:00:19.0 eno1: Detected Hardware Unit Hang:
                 TDH                  <1f>
                 TDT                  <6f>
                 next_to_use          <6f>
                 next_to_clean        <1e>
               buffer_info[next_to_clean]:
                 time_stamp           <10014897b>
                 next_to_watch        <1f>
                 jiffies              <100148c18>
                 next_to_watch.status <0>
               MAC Status             <80083>
               PHY Status             <796d>
               PHY 1000BASE-T Status  <3800>
               PHY Extended Status    <3000>
               PCI Status             <10>
[13768.953875] e1000e 0000:00:19.0 eno1: Detected Hardware Unit Hang:
                 TDH                  <1f>
                 TDT                  <6f>
                 next_to_use          <6f>
                 next_to_clean        <1e>
               buffer_info[next_to_clean]:
                 time_stamp           <10014897b>
                 next_to_watch        <1f>
                 jiffies              <100148ce0>
                 next_to_watch.status <0>
               MAC Status             <80083>
               PHY Status             <796d>
               PHY 1000BASE-T Status  <3800>
               PHY Extended Status    <3000>
               PCI Status             <10>
Comment 42 Jesse Brandeburg 2021-09-13 19:03:37 UTC
This thread is probably scoped over a bunch of different bugs, since the one symptom we have of a transmit issue is a tx-hang and recovery. The most recent comments seem to be about e1000e and not e1000 as the original reports.

However, if turning off TSO seems to help, we might be able to figure out what is causing the problem, if we can reproduce the issue.

As for e1000e, if you have a good reproducer, I will try to get it reproduced or work internally to get it so.
Comment 43 Robert Dinse 2021-09-14 02:45:21 UTC
I apologize, you are correct, this is for the E1000e, but yes turning off TSO results in stable operation, with it enabled it will hang two or three times in a 24 hour period.  The machine that it is on: 

iglulik
    description: Desktop Computer
    product: All Series (All)
    vendor: ASUS
    version: System Version
    serial: System Serial Number
    width: 64 bits
    capabilities: smbios-3.0.0 dmi-3.0.0 smp vsyscall32
    configuration: boot=normal chassis=desktop family=ASUS MB sku=All uuid=40E0EFA1-21C0-D311-88D8-704D7BB335D9
  *-core
       description: Motherboard
       product: X99-E
       vendor: ASUSTeK COMPUTER INC.
       physical id: 0
       version: Rev 1.xx
       serial: 161086337600177
       slot: Default string
     *-firmware
          description: BIOS
          vendor: American Megatrends Inc.
          physical id: 0
          version: 2101
          date: 07/10/2019
          size: 64KiB
          capacity: 16MiB
          capabilities: pci apm upgrade shadowing cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer acpi usb biosbootspecification uefi
     *-memory
          description: System Memory
          physical id: 5b
          slot: System board or motherboard
          size: 128GiB
        *-bank:0
             description: DIMM DDR4 Synchronous 2400 MHz (0.4 ns)
             product: F4-2400C14-16GRK
             vendor: G-Skill
             physical id: 0
             serial: 00000000
             slot: DIMM_A1
             size: 16GiB
             width: 72 bits
             clock: 2400MHz (0.4ns)
        *-bank:1
             description: DIMM DDR4 Synchronous 2400 MHz (0.4 ns)
             product: F4-2400C14-16GRK
             vendor: G-Skill
             physical id: 1
             serial: 00000000
             slot: DIMM_A2
             size: 16GiB
             width: 72 bits
             clock: 2400MHz (0.4ns)
        *-bank:2
             description: DIMM DDR4 Synchronous 2400 MHz (0.4 ns)
             product: F4-2400C14-16GRK
             vendor: G-Skill
             physical id: 2
             serial: 00000000
             slot: DIMM_B1
             size: 16GiB
             width: 72 bits
             clock: 2400MHz (0.4ns)
        *-bank:3
             description: DIMM DDR4 Synchronous 2400 MHz (0.4 ns)
             product: F4-2400C14-16GRK
             vendor: G-Skill
             physical id: 3
             serial: 00000000
             slot: DIMM_B2
             size: 16GiB
             width: 72 bits
             clock: 2400MHz (0.4ns)
        *-bank:4
             description: DIMM DDR4 Synchronous 2400 MHz (0.4 ns)
             product: F4-2400C14-16GRK
             vendor: G-Skill
             physical id: 4
             serial: 00000000
             slot: DIMM_C1
             size: 16GiB
             width: 72 bits
             clock: 2400MHz (0.4ns)
        *-bank:5
             description: DIMM DDR4 Synchronous 2400 MHz (0.4 ns)
             product: F4-2400C14-16GRK
             vendor: G-Skill
             physical id: 5
             serial: 00000000
             slot: DIMM_C2
             size: 16GiB
             width: 72 bits
             clock: 2400MHz (0.4ns)
        *-bank:6
             description: DIMM DDR4 Synchronous 2400 MHz (0.4 ns)
             product: F4-2400C14-16GRK
             vendor: G-Skill
             physical id: 6
             serial: 00000000
             slot: DIMM_D1
             size: 16GiB
             width: 72 bits
             clock: 2400MHz (0.4ns)
        *-bank:7
             description: DIMM DDR4 Synchronous 2400 MHz (0.4 ns)
             product: F4-2400C14-16GRK
             vendor: G-Skill
             physical id: 7
             serial: 00000000
             slot: DIMM_D2
             size: 16GiB
             width: 72 bits
             clock: 2400MHz (0.4ns)
     *-cache:0
          description: L1 cache
          physical id: 6d
          slot: CPU Internal L1
          size: 384KiB
          capacity: 384KiB
          capabilities: internal write-back
          configuration: level=1
     *-cache:1
          description: L2 cache
          physical id: 6e
          slot: CPU Internal L2
          size: 1536KiB
          capacity: 1536KiB
          capabilities: internal write-back unified
          configuration: level=2
     *-cache:2
          description: L3 cache
          physical id: 6f
          slot: CPU Internal L3
          size: 15MiB
          capacity: 15MiB
          capabilities: internal write-back unified
          configuration: level=3
     *-cpu
          description: CPU
          product: Intel(R) Core(TM) i7-6850K CPU @ 3.60GHz
          vendor: Intel Corp.
          physical id: 70
          bus info: cpu@0
          version: Intel(R) Core(TM) i7-6850K CPU @ 3.60GHz
          slot: SOCKET 2011
          size: 4199MHz
          capacity: 4200MHz
          width: 64 bits
          clock: 100MHz
          capabilities: lm fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp x86-64 constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cp
l vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 invpcid_single pti intel_ppin ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 s
mep bmi2 erms invpcid rtm cqm rdt_a rdseed adx smap intel_pt xsaveopt cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts md_clear flush_l1d cpufreq          configuration: cores=6 enabledcores=6 threads=12
     *-pci
          description: Host bridge
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DMI2
          vendor: Intel Corporation
          physical id: 100
          bus info: pci@0000:00:00.0
          version: 01
          width: 32 bits
          clock: 33MHz
        *-pci:0
             description: PCI bridge
             product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D PCI Express Root Port 1
             vendor: Intel Corporation
             physical id: 1
             bus info: pci@0000:00:01.0
             version: 01
             width: 32 bits
             clock: 33MHz
             capabilities: pci msi pciexpress pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:25
        *-pci:1
             description: PCI bridge
             product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D PCI Express Root Port 1
             vendor: Intel Corporation
             physical id: 1.1
             bus info: pci@0000:00:01.1
             version: 01
             width: 32 bits
             clock: 33MHz
             capabilities: pci msi pciexpress pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:26
        *-pci:2
             description: PCI bridge
             product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D PCI Express Root Port 2
             vendor: Intel Corporation
             physical id: 2
             bus info: pci@0000:00:02.0
             version: 01
             width: 32 bits
             clock: 33MHz
             capabilities: pci msi pciexpress pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:28 memory:fb100000-fb2fffff
           *-storage
                description: Mass storage controller
                product: ioDrive2
                vendor: SanDisk
                physical id: 0
                bus info: pci@0000:02:00.0
                version: 04
                width: 32 bits
                clock: 33MHz
                capabilities: storage pm msi pciexpress msix bus_master cap_list rom
                configuration: driver=iodrive latency=0
                resources: irq:49 memory:fb220000-fb221fff memory:fb200000-fb21ffff memory:fb100000-fb1fffff
        *-pci:3
             description: PCI bridge
             product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D PCI Express Root Port 3
             vendor: Intel Corporation
             physical id: 3
             bus info: pci@0000:00:03.0
             version: 01
             width: 32 bits
             clock: 33MHz
             capabilities: pci msi pciexpress pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:30 ioport:e000(size=4096) memory:fa000000-fb0fffff ioport:c0000000(size=301989888)
           *-display
                description: VGA compatible controller
                product: GT218 [GeForce 210]
                vendor: NVIDIA Corporation
                physical id: 0

                bus info: pci@0000:01:00.0
                version: a2
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
                configuration: driver=nouveau latency=0
                resources: irq:45 memory:fa000000-faffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:e000(size=128) memory:c0000-dffff
           *-multimedia
                description: Audio device
                product: High Definition Audio Controller
                vendor: NVIDIA Corporation
                physical id: 0.1
                bus info: pci@0000:01:00.1
                version: a1
                width: 32 bits
                clock: 33MHz
                capabilities: pm msi pciexpress bus_master cap_list
                configuration: driver=snd_hda_intel latency=0
                resources: irq:48 memory:fb080000-fb083fff
        *-generic:0 UNCLAIMED
             description: System peripheral
             product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Map/VTd_Misc/System Management
             vendor: Intel Corporation
             physical id: 5
             bus info: pci@0000:00:05.0
             version: 01
             width: 32 bits
             clock: 33MHz
             capabilities: pciexpress cap_list
             configuration: latency=0
        *-generic:1 UNCLAIMED
             description: System peripheral
             product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D IIO Hot Plug
             vendor: Intel Corporation
             physical id: 5.1
             bus info: pci@0000:00:05.1
             version: 01
             width: 32 bits
             clock: 33MHz
             capabilities: pciexpress msi cap_list
             configuration: latency=0
        *-generic:2 UNCLAIMED
             description: System peripheral
             product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D IIO RAS/Control Status/Global Errors
             vendor: Intel Corporation
             physical id: 5.2
             bus info: pci@0000:00:05.2
             version: 01
             width: 32 bits
             clock: 33MHz
             capabilities: pciexpress cap_list
             configuration: latency=0
        *-generic:3 UNCLAIMED
             description: PIC
             product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D I/O APIC
             vendor: Intel Corporation
             physical id: 5.4
             bus info: pci@0000:00:05.4
             version: 01
             width: 32 bits
             clock: 33MHz
             capabilities: pciexpress pm io_x_-apic bus_master cap_list
             configuration: latency=0
             resources: memory:fb43e000-fb43efff
        *-generic:4 UNCLAIMED
             description: Unassigned class
             product: C610/X99 series chipset SPSR
             vendor: Intel Corporation
             physical id: 11
             bus info: pci@0000:00:11.0
             version: 05
             width: 32 bits
             clock: 33MHz
             capabilities: pciexpress pm bus_master cap_list
             configuration: latency=0
        *-sata:0
             description: SATA controller
             product: C610/X99 series chipset sSATA Controller [AHCI mode]
             vendor: Intel Corporation
             physical id: 11.4
             bus info: pci@0000:00:11.4
             version: 05
             width: 32 bits
             clock: 66MHz
             capabilities: sata msi pm ahci_1.0 bus_master cap_list
             configuration: driver=ahci latency=0
             resources: irq:43 ioport:f0f0(size=8) ioport:f0e0(size=4) ioport:f0d0(size=8) ioport:f0c0(size=4) ioport:f020(size=32) memory:fb43a000-fb43a7ff
        *-usb:0
             description: USB controller
             product: C610/X99 series chipset USB xHCI Host Controller
             vendor: Intel Corporation
             physical id: 14
             bus info: pci@0000:00:14.0
             version: 05
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi xhci bus_master cap_list
             configuration: driver=xhci_hcd latency=0
             resources: irq:34 memory:fb420000-fb42ffff
           *-usbhost:0
                product: xHCI Host Controller
                vendor: Linux 5.14.0 xhci-hcd
                physical id: 0
                bus info: usb@3
                logical name: usb3
                version: 5.14
                capabilities: usb-2.00
                configuration: driver=hub slots=15 speed=480Mbit/s
              *-usb
                   description: USB hub
                   product: ASM107x
                   vendor: ASUS TEK.
                   physical id: 4
                   bus info: usb@3:4
                   version: 0.01
                   capabilities: usb-2.10
                   configuration: driver=hub maxpower=100mA slots=4 speed=480Mbit/s
           *-usbhost:1
                product: xHCI Host Controller
                vendor: Linux 5.14.0 xhci-hcd
                physical id: 1
                bus info: usb@4
                logical name: usb4
                version: 5.14
                capabilities: usb-3.00
                configuration: driver=hub slots=6 speed=5000Mbit/s
              *-usb
                   description: USB hub
                   product: ASM107x
                   vendor: ASUS TEK.
                   physical id: 4
                   bus info: usb@4:4
                   version: 0.01
                   capabilities: usb-3.00
                   configuration: driver=hub maxpower=8mA slots=4 speed=5000Mbit/s
        *-communication
             description: Communication controller
             product: C610/X99 series chipset MEI Controller #1
             vendor: Intel Corporation
             physical id: 16
             bus info: pci@0000:00:16.0
             version: 05
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi bus_master cap_list
             configuration: driver=mei_me latency=0
             resources: irq:46 memory:fb439000-fb43900f
        *-network
             description: Ethernet interface
             product: Ethernet Connection (2) I218-V
             vendor: Intel Corporation
             physical id: 19
             bus info: pci@0000:00:19.0
             logical name: eno1
             version: 05
             serial: 70:4d:7b:b3:35:d9
             size: 1Gbit/s
             capacity: 1Gbit/s
             width: 32 bits
             clock: 33MHz
             capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
             configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=5.14.0 duplex=full firmware=0.1-4 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
             resources: irq:33 memory:fb400000-fb41ffff memory:fb436000-fb436fff ioport:f000(size=32)
        *-usb:1
             description: USB controller
             product: C610/X99 series chipset USB Enhanced Host Controller #2
             vendor: Intel Corporation
             physical id: 1a
             bus info: pci@0000:00:1a.0
             version: 05
             width: 32 bits
             clock: 33MHz
             capabilities: pm debug ehci bus_master cap_list
             configuration: driver=ehci-pci latency=0
             resources: irq:18 memory:fb435000-fb4353ff
           *-usbhost
                product: EHCI Host Controller
                vendor: Linux 5.14.0 ehci_hcd
                physical id: 1
                bus info: usb@1
                logical name: usb1
                version: 5.14
                capabilities: usb-2.00
                configuration: driver=hub slots=2 speed=480Mbit/s
              *-usb
                   description: USB hub
                   vendor: Intel Corp.
                   physical id: 1
                   bus info: usb@1:1
                   version: 0.05
                   capabilities: usb-2.00
                   configuration: driver=hub slots=6 speed=480Mbit/s
        *-multimedia
             description: Audio device
             product: C610/X99 series chipset HD Audio Controller
             vendor: Intel Corporation
             physical id: 1b
             bus info: pci@0000:00:1b.0
             version: 05
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi pciexpress bus_master cap_list
             configuration: driver=snd_hda_intel latency=0
             resources: irq:47 memory:fb430000-fb433fff
        *-pci:4
             description: PCI bridge
             product: C610/X99 series chipset PCI Express Root Port #1
             vendor: Intel Corporation
             physical id: 1c
             bus info: pci@0000:00:1c.0
             version: d5
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:31
        *-pci:5
             description: PCI bridge
             product: C610/X99 series chipset PCI Express Root Port #5
             vendor: Intel Corporation
             physical id: 1c.4
             bus info: pci@0000:00:1c.4
             version: d5
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:32 memory:fb300000-fb3fffff
           *-usb
                description: USB controller
                product: ASM1142 USB 3.1 Host Controller
                vendor: ASMedia Technology Inc.
                physical id: 0
                bus info: pci@0000:06:00.0
                version: 00
                width: 64 bits
                clock: 33MHz
                capabilities: msi msix pm pciexpress xhci bus_master cap_list
                configuration: driver=xhci_hcd latency=0
                resources: irq:17 memory:fb300000-fb307fff
              *-usbhost:0
                   product: xHCI Host Controller
                   vendor: Linux 5.14.0 xhci-hcd
                   physical id: 0
                   bus info: usb@5
                   logical name: usb5
                   version: 5.14
                   capabilities: usb-2.00
                   configuration: driver=hub slots=2 speed=480Mbit/s
              *-usbhost:1
                   product: xHCI Host Controller
                   vendor: Linux 5.14.0 xhci-hcd
                   physical id: 1
                   bus info: usb@6
                   logical name: usb6
                   version: 5.14
                   capabilities: usb-3.10
                   configuration: driver=hub slots=2 speed=10000Mbit/s
        *-usb:2
             description: USB controller
             product: C610/X99 series chipset USB Enhanced Host Controller #1
             vendor: Intel Corporation
             physical id: 1d
             bus info: pci@0000:00:1d.0
             version: 05
             width: 32 bits
             clock: 33MHz
             capabilities: pm debug ehci bus_master cap_list
             configuration: driver=ehci-pci latency=0
             resources: irq:21 memory:fb434000-fb4343ff
           *-usbhost
                product: EHCI Host Controller
                vendor: Linux 5.14.0 ehci_hcd
                physical id: 1
                bus info: usb@2
                logical name: usb2
                version: 5.14
                capabilities: usb-2.00
                configuration: driver=hub slots=2 speed=480Mbit/s
              *-usb
                   description: USB hub
                   vendor: Intel Corp.
                   physical id: 1
                   bus info: usb@2:1
                   version: 0.05
                   capabilities: usb-2.00
                   configuration: driver=hub slots=8 speed=480Mbit/s
        *-isa
             description: ISA bridge
             product: C610/X99 series chipset LPC Controller
             vendor: Intel Corporation
             physical id: 1f
             bus info: pci@0000:00:1f.0
             version: 05
             width: 32 bits
             clock: 33MHz
             capabilities: isa bus_master cap_list
             configuration: driver=lpc_ich latency=0
             resources: irq:0
        *-sata:1
             description: SATA controller
             product: C610/X99 series chipset 6-Port SATA Controller [AHCI mode]
             vendor: Intel Corporation
             physical id: 1f.2
             bus info: pci@0000:00:1f.2
             version: 05
             width: 32 bits
             clock: 66MHz
             capabilities: sata msi pm ahci_1.0 bus_master cap_list
             configuration: driver=ahci latency=0
             resources: irq:44 ioport:f130(size=8) ioport:f120(size=4) ioport:f110(size=8) ioport:f100(size=4) ioport:f040(size=32) memory:fb43d000-fb43d7ff
        *-serial
             description: SMBus
             product: C610/X99 series chipset SMBus Controller
             vendor: Intel Corporation
             physical id: 1f.3
             bus info: pci@0000:00:1f.3
             version: 05
             width: 64 bits
             clock: 33MHz
             configuration: driver=i801_smbus latency=0
             resources: irq:18 memory:fb43c000-fb43c0ff ioport:580(size=32)
     *-generic:0 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D R3 QPI Link 0/1
          vendor: Intel Corporation
          physical id: b
          bus info: pci@0000:ff:0b.0
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:1
          description: Performance counters
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D R3 QPI Link 0/1
          vendor: Intel Corporation
          physical id: b.1
          bus info: pci@0000:ff:0b.1
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: driver=bdx_uncore latency=0
          resources: irq:0
     *-generic:2
          description: Performance counters
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D R3 QPI Link 0/1
          vendor: Intel Corporation
          physical id: b.2
          bus info: pci@0000:ff:0b.2
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: driver=bdx_uncore latency=0
          resources: irq:0
     *-generic:3 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D R3 QPI Link Debug
          vendor: Intel Corporation
          physical id: b.3
          bus info: pci@0000:ff:0b.3
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:4 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent
          vendor: Intel Corporation
          physical id: c
          bus info: pci@0000:ff:0c.0
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:5 UNCLAIMED          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent
          vendor: Intel Corporation
          physical id: c.1
          bus info: pci@0000:ff:0c.1
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:6 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent
          vendor: Intel Corporation
          physical id: c.2
          bus info: pci@0000:ff:0c.2
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:7 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent
          vendor: Intel Corporation
          physical id: c.3
          bus info: pci@0000:ff:0c.3
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:8 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent
          vendor: Intel Corporation
          physical id: c.4
          bus info: pci@0000:ff:0c.4
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:9 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent
          vendor: Intel Corporation
          physical id: c.5
          bus info: pci@0000:ff:0c.5
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:10 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent
          vendor: Intel Corporation
          physical id: f
          bus info: pci@0000:ff:0f.0
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:11 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent
          vendor: Intel Corporation
          physical id: f.1
          bus info: pci@0000:ff:0f.1
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:12 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent
          vendor: Intel Corporation
          physical id: f.4
          bus info: pci@0000:ff:0f.4
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:13 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent
          vendor: Intel Corporation
          physical id: f.5
          bus info: pci@0000:ff:0f.5
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:14 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Caching Agent
          vendor: Intel Corporation
          physical id: f.6
          bus info: pci@0000:ff:0f.6
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:15 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D R2PCIe Agent
          vendor: Intel Corporation
          physical id: 10
          bus info: pci@0000:ff:10.0
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:16
          description: Performance counters
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D R2PCIe Agent
          vendor: Intel Corporation
          physical id: 10.1
          bus info: pci@0000:ff:10.1
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: driver=bdx_uncore latency=0
          resources: irq:0
     *-generic:17 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Ubox
          vendor: Intel Corporation
          physical id: 10.5
          bus info: pci@0000:ff:10.5
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:18 UNCLAIMED
          description: Performance counters
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Ubox
          vendor: Intel Corporation
          physical id: 10.6
          bus info: pci@0000:ff:10.6
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:19 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Ubox
          vendor: Intel Corporation
          physical id: 10.7
          bus info: pci@0000:ff:10.7
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:20 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Home Agent 0
          vendor: Intel Corporation
          physical id: 12
          bus info: pci@0000:ff:12.0
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:21
          description: Performance counters
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Home Agent 0
          vendor: Intel Corporation
          physical id: 12.1
          bus info: pci@0000:ff:12.1
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: driver=bdx_uncore latency=0
          resources: irq:0
     *-generic:22 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Target Address/Thermal/RAS
          vendor: Intel Corporation
          physical id: 13
          bus info: pci@0000:ff:13.0
          version: 01
          width: 32 bits
          clock: 33MHz
          capabilities: pciexpress cap_list
          configuration: latency=0
     *-generic:23 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Target Address/Thermal/RAS
          vendor: Intel Corporation
          physical id: 13.1
          bus info: pci@0000:ff:13.1
          version: 01
          width: 32 bits
          clock: 33MHz
          capabilities: pciexpress cap_list
          configuration: latency=0
     *-generic:24 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel Target Address Decoder
          vendor: Intel Corporation
          physical id: 13.2
          bus info: pci@0000:ff:13.2
          version: 01
          width: 32 bits
          clock: 33MHz
          capabilities: pciexpress cap_list
          configuration: latency=0
     *-generic:25 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel Target Address Decoder
          vendor: Intel Corporation
          physical id: 13.3
          bus info: pci@0000:ff:13.3
          version: 01
          width: 32 bits
          clock: 33MHz
          capabilities: pciexpress cap_list
          configuration: latency=0
     *-generic:26 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel Target Address Decoder
          vendor: Intel Corporation
          physical id: 13.4
          bus info: pci@0000:ff:13.4
          version: 01
          width: 32 bits
          clock: 33MHz
          capabilities: pciexpress cap_list
          configuration: latency=0
     *-generic:27 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel Target Address Decoder
          vendor: Intel Corporation
          physical id: 13.5
          bus info: pci@0000:ff:13.5
          version: 01
          width: 32 bits
          clock: 33MHz
          capabilities: pciexpress cap_list
          configuration: latency=0
     *-generic:28 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Channel 0/1 Broadcast
          vendor: Intel Corporation
          physical id: 13.6
          bus info: pci@0000:ff:13.6
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:29 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Global Broadcast
          vendor: Intel Corporation
          physical id: 13.7
          bus info: pci@0000:ff:13.7
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:30
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel 0 Thermal Control
          vendor: Intel Corporation
          physical id: 14
          bus info: pci@0000:ff:14.0
          version: 01
          width: 32 bits
          clock: 33MHz
          capabilities: pciexpress cap_list
          configuration: driver=bdx_uncore latency=0
          resources: irq:0
     *-generic:31
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel 1 Thermal Control
          vendor: Intel Corporation
          physical id: 14.1
          bus info: pci@0000:ff:14.1
          version: 01
          width: 32 bits
          clock: 33MHz
          capabilities: pciexpress cap_list
          configuration: driver=bdx_uncore latency=0
          resources: irq:0
     *-generic:32 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel 0 Error
          vendor: Intel Corporation
          physical id: 14.2
          bus info: pci@0000:ff:14.2
          version: 01
          width: 32 bits
          clock: 33MHz
          capabilities: pciexpress cap_list
          configuration: latency=0
     *-generic:33 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel 1 Error
          vendor: Intel Corporation
          physical id: 14.3
          bus info: pci@0000:ff:14.3
          version: 01
          width: 32 bits
          clock: 33MHz
          capabilities: pciexpress cap_list
          configuration: latency=0
     *-generic:34 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Channel 0/1 Interface
          vendor: Intel Corporation
          physical id: 14.4
          bus info: pci@0000:ff:14.4
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:35 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Channel 0/1 Interface
          vendor: Intel Corporation
          physical id: 14.5
          bus info: pci@0000:ff:14.5
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:36 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Channel 0/1 Interface
          vendor: Intel Corporation
          physical id: 14.6
          bus info: pci@0000:ff:14.6
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:37 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Channel 0/1 Interface
          vendor: Intel Corporation
          physical id: 14.7
          bus info: pci@0000:ff:14.7
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:38
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel 2 Thermal Control
          vendor: Intel Corporation
          physical id: 15
          bus info: pci@0000:ff:15.0
          version: 01
          width: 32 bits
          clock: 33MHz
          capabilities: pciexpress cap_list
          configuration: driver=bdx_uncore latency=0
          resources: irq:0
     *-generic:39
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel 3 Thermal Control
          vendor: Intel Corporation
          physical id: 15.1
          bus info: pci@0000:ff:15.1
          version: 01
          width: 32 bits
          clock: 33MHz
          capabilities: pciexpress cap_list
          configuration: driver=bdx_uncore latency=0
          resources: irq:0
     *-generic:40 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel 2 Error
          vendor: Intel Corporation
          physical id: 15.2
          bus info: pci@0000:ff:15.2
          version: 01
          width: 32 bits
          clock: 33MHz
          capabilities: pciexpress cap_list
          configuration: latency=0
     *-generic:41 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 0 - Channel 3 Error
          vendor: Intel Corporation
          physical id: 15.3
          bus info: pci@0000:ff:15.3
          version: 01
          width: 32 bits
          clock: 33MHz
          capabilities: pciexpress cap_list
          configuration: latency=0
     *-generic:42 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Target Address/Thermal/RAS
          vendor: Intel Corporation
          physical id: 16
          bus info: pci@0000:ff:16.0
          version: 01
          width: 32 bits
          clock: 33MHz
          capabilities: cap_list
          configuration: latency=0
     *-generic:43 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Channel 2/3 Broadcast
          vendor: Intel Corporation
          physical id: 16.6
          bus info: pci@0000:ff:16.6
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:44 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Global Broadcast
          vendor: Intel Corporation
          physical id: 16.7
          bus info: pci@0000:ff:16.7
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:45
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Memory Controller 1 - Channel 0 Thermal Control
          vendor: Intel Corporation
          physical id: 17
          bus info: pci@0000:ff:17.0
          version: 01
          width: 32 bits
          clock: 33MHz
          capabilities: cap_list
          configuration: driver=bdx_uncore latency=0
          resources: irq:0
     *-generic:46 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Channel 2/3 Interface
          vendor: Intel Corporation
          physical id: 17.4
          bus info: pci@0000:ff:17.4
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:47 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Channel 2/3 Interface
          vendor: Intel Corporation
          physical id: 17.5
          bus info: pci@0000:ff:17.5
          version: 01
          wid          clock: 33MHz
          configuration: latency=0
     *-generic:48 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Channel 2/3 Interface
          vendor: Intel Corporation
          physical id: 17.6
          bus info: pci@0000:ff:17.6
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:49 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D DDRIO Channel 2/3 Interface
          vendor: Intel Corporation
          physical id: 17.7
          bus info: pci@0000:ff:17.7
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:50 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Power Control Unit
          vendor: Intel Corporation
          physical id: 1e
          bus info: pci@0000:ff:1e.0
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:51 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Power Control Unit
          vendor: Intel Corporation
          physical id: 1e.1
          bus info: pci@0000:ff:1e.1
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:52 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Power Control Unit
          vendor: Intel Corporation
          physical id: 1e.2
          bus info: pci@0000:ff:1e.2
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:53 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Power Control Unit
          vendor: Intel Corporation
          physical id: 1e.3
          bus info: pci@0000:ff:1e.3
          version: 01
          width: 64 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:54 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Power Control Unit
          vendor: Intel Corporation
          physical id: 1e.4
          bus info: pci@0000:ff:1e.4
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:55 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Power Control Unit
th: 32 bits
          vendor: Intel Corporation
          physical id: 1f
          bus info: pci@0000:ff:1f.0
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-generic:56 UNCLAIMED
          description: System peripheral
          product: Xeon E7 v4/Xeon E5 v4/Xeon E3 v4/Xeon D Power Control Unit
          vendor: Intel Corporation
          physical id: 1f.2
          bus info: pci@0000:ff:1f.2
          version: 01
          width: 32 bits
          clock: 33MHz
          configuration: latency=0
     *-pnp00:00
          product: PnP device PNP0b00
          physical id: 1
          capabilities: pnp
          configuration: driver=rtc_cmos
     *-pnp00:01
          product: PnP device PNP0c02
          physical id: 2
          capabilities: pnp
          configuration: driver=system
     *-pnp00:02
          product: PnP device PNP0c02
          physical id: 3
          capabilities: pnp
          configuration: driver=system
     *-pnp00:03
          product: PnP device PNP0501
          physical id: 4
          capabilities: pnp
          configuration: driver=serial
     *-scsi:0
          physical id: 5
          logical name: scsi2
          capabilities: emulated
        *-disk
             description: ATA Disk
             product: WDC WD100EFAX-68
             vendor: Western Digital
             physical id: 0.0.0
             bus info: scsi@2:0.0.0
             logical name: /dev/sda
             version: 0A83
             serial: JEJXVLXN
             size: 9314GiB (10TB)
             configuration: ansiversion=5 logicalsectorsize=512 sectorsize=4096
     *-scsi:1
          physical id: 6
          logical name: scsi3
          capabilities: emulated
        *-disk
             description: ATA Disk
             product: WDC WD100EFAX-68
             vendor: Western Digital
             physical id: 0.0.0
             bus info: scsi@3:0.0.0
             logical name: /dev/sdb
             version: 0A83
             serial: JEJWTYNN
             size: 9314GiB (10TB)
             configuration: ansiversion=5 logicalsectorsize=512 sectorsize=4096
     *-scsi:2
          physical id: 7
          logical name: scsi4
          capabilities: emulated
        *-disk
             description: ATA Disk
             product: WDC WD2002FAEX-0
             vendor: Western Digital
             physical id: 0.0.0
             bus info: scsi@4:0.0.0
             logical name: /dev/sdc
             version: 1D05
             serial: WD-WMAWP0382725
             size: 1863GiB (2TB)
             capabilities: gpt-1.00 partitioned partitioned:gpt
             configuration: ansiversion=5 guid=514bbf6c-cc02-458b-82f2-2bf484dbb2ca logicalsectorsize=512 sectorsize=512
           *-volume:0
                description: BIOS Boot partition
                vendor: EFI
                physical id: 1
                bus info: scsi@4:0.0.0,1
                logical name: /dev/sdc1
                serial: c72aa955-eb69-4dc5-9b15-9f0f86f0141f
                capacity: 8015KiB
                capabilities: nofs
                configuration: name=bios_grub
           *-volume:1
                description: Windows FAT volume
                vendor: mkfs.fat
                physical id: 2
                bus info: scsi@4:0.0.0,2
                logical name: /dev/sdc2
                logical name: /boot/efi
                version: FAT32
                serial: ebaa-74cc
                size: 188MiB
                capacity: 196MiB
                capabilities: boot fat initialized
                configuration: FATs=2 filesystem=fat label=EFI BOOT mount.fstype=vfat mount.options=rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro name=EFI System Partition state=mounted
           *-volume:2
                description: EXT4 volume
                vendor: Linux
                physical id: 3
                bus info: scsi@4:0.0.0,3
                logical name: /dev/sdc3
                logical name: /boot
                version: 1.0
                serial: 806823aa-fd55-4613-bb5e-0d3f8f367b2f
                size: 501MiB
                capabilities: journaled extended_attributes large_files huge_files dir_nlink recover 64bit extents ext4 ext2 initialized
                configuration: created=2017-05-05 07:15:27 filesystem=ext4 lastmountpoint=/boot modified=2021-09-02 00:11:29 mount.fstype=ext4 mount.options=rw,relatime mounted=2021-09-02 00:11:29 name=boot state=mounted
           *-volume:3
                description: Linux swap volume
                vendor: Linux
                physical id: 4
                bus info: scsi@4:0.0.0,4
                logical name: /dev/sdc4
                version: 1
                serial: 963cb206-8962-4fc0-82a1-fc4f02a9b5c5
                size: 249GiB
                capacity: 249GiB
                capabilities: nofs swap initialized
                configuration: filesystem=swap name=swap pagesize=4096
           *-volume:4
                description: EXT4 volume
                vendor: Linux
                physical id: 5
                bus info: scsi@4:0.0.0,5
                logical name: /dev/sdc5
                logical name: /
                version: 1.0
                serial: 28825f5b-a6fd-4e09-982c-0513ae4d2842
                size: 1612GiB
                capacity: 1612GiB
                capabilities: journaled extended_attributes large_files huge_files dir_nlink recover 64bit extents ext4 ext2 initialized
                configuration: created=2017-05-05 07:15:27 filesystem=ext4 lastmountpoint=/ modified=2021-09-02 00:11:07 mount.fstype=ext4 mount.options=rw,relatime,errors=remount-ro mounted=2021-09-02 00:11:21 name=root state=mounted
     *-scsi:3
          physical id: 8
          logical name: scsi5
          capabilities: emulated
        *-disk
             description: ATA Disk
             product: WDC WD4001FAEX-0
             vendor: Western Digital
             physical id: 0.0.0
             bus info: scsi@5:0.0.0
             logical name: /dev/sdd
             version: 1L01
             serial: WD-WCC131138500
             size: 3726GiB (4TB)
             configuration: ansiversion=5 logicalsectorsize=512 sectorsize=512
     *-scsi:4
          physical id: 9
          logical name: scsi6
          capabilities: emulated
        *-disk
             description: ATA Disk
             product: WDC WD4003FZEX-0
             vendor: Western Digital
             physical id: 0.0.0
             bus info: scsi@6:0.0.0
             logical name: /dev/sde
             version: 1A01
             serial: WD-WMC5D0D8WL11
             size: 3726GiB (4TB)
             configuration: ansiversion=5 logicalsectorsize=512 sectorsize=4096
     *-scsi:5
          physical id: a
          logical name: scsi7
          capabilities: emulated
        *-disk
             description: ATA Disk
             product: HGST HUS726T4TAL
             physical id: 0.0.0
             bus info: scsi@7:0.0.0
             logical name: /dev/sdf
             version: W40H
             serial: V6HEM0PS
             size: 3726GiB (4TB)
             configuration: ansiversion=5 logicalsectorsize=512 sectorsize=512
     *-scsi:6
          physical id: d
          logical name: scsi8
          capabilities: emulated
        *-disk
             description: ATA Disk
             product: WDC WD4003FZEX-0
             vendor: Western Digital
             physical id: 0.0.0
             bus info: scsi@8:0.0.0
             logical name: /dev/sdg
             version: 1A01
             serial: WD-WMC5D0D4H5TC
             size: 3726GiB (4TB)
             configuration: ansiversion=5 logicalsectorsize=512 sectorsize=4096
     *-scsi:7
          physical id: e
          logical name: scsi9
          capabilities: emulated
        *-cdrom
             description: DVD-RAM writer
             product: DRW-24B1ST   a
             vendor: ASUS
             physical id: 0.0.0
             bus info: scsi@9:0.0.0
             logical name: /dev/cdrom
             logical name: /dev/cdrw
             logical name: /dev/dvd
             logical name: /dev/dvdrw
             logical name: /dev/sr0
             version: 1.04
             capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
             configuration: ansiversion=5 status=nodisc
  *-power UNCLAIMED
       description: To Be Filled By O.E.M.
       product: To Be Filled By O.E.M.
       vendor: To Be Filled By O.E.M.
       physical id: 1
             configuration: ansiversion=5 logicalsectorsize=512 sectorsize=4096
     *-scsi:7
          physical id: e
          logical name: scsi9
          capabilities: emulated
        *-cdrom
             description: DVD-RAM writer
             product: DRW-24B1ST   a
             vendor: ASUS
             physical id: 0.0.0
             bus info: scsi@9:0.0.0
             logical name: /dev/cdrom
             logical name: /dev/cdrw
             logical name: /dev/dvd
             logical name: /dev/dvdrw
             logical name: /dev/sr0
             version: 1.04
             capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
             configuration: ansiversion=5 status=nodisc
  *-power UNCLAIMED
       description: To Be Filled By O.E.M.
       product: To Be Filled By O.E.M.
       vendor: To Be Filled By O.E.M.
       physical id: 1
       version: To Be Filled By O.E.M.
       serial: To Be Filled By O.E.M.
       capacity: 32768mWh
  *-network:0 DISABLED
       description: Ethernet interface
       physical id: 2
       logical name: virbr0-nic
       serial: 52:54:00:15:2d:d0
       size: 10Mbit/s
       capabilities: ethernet physical
       configuration: autonegotiation=off broadcast=yes driver=tun driverversion=1.6 duplex=full link=no multicast=yes port=twisted pair speed=10Mbit/s
  *-network:1
       description: Ethernet interface
       physical id: 3
       logical name: vnet0
       serial: fe:54:00:23:40:47
       size: 10Mbit/s
       capabilities: ethernet physical
       configuration: autonegotiation=off broadcast=yes driver=tun driverversion=1.6 duplex=full link=yes multicast=yes port=twisted pair speed=10Mbit/s
  *-network:2
       description: Ethernet interface
       physical id: 4
       logical name: vnet1
       serial: fe:54:00:6f:da:d0
       size: 10Mbit/s
       capabilities: ethernet physical
       configuration: autonegotiation=off broadcast=yes driver=tun driverversion=1.6 duplex=full link=yes multicast=yes port=twisted pair speed=10Mbit/s
  *-network:3
       description: Ethernet interface
       physical id: 5
       logical name: vnet2
       serial: fe:54:00:31:7f:f7
       size: 10Mbit/s
       capabilities: ethernet physical
       configuration: autonegotiation=off broadcast=yes driver=tun driverversion=1.6 duplex=full link=yes multicast=yes port=twisted pair speed=10Mbit/s
  *-network:4
       description: Ethernet interface
       physical id: 6
       logical name: vnet3
       serial: fe:54:00:51:fc:f3
       size: 10Mbit/s
       capabilities: ethernet physical
       configuration: autonegotiation=off broadcast=yes driver=tun driverversion=1.6 duplex=full link=yes multicast=yes port=twisted pair speed=10Mbit/s
  *-network:5
       description: Ethernet interface
       physical id: 7
       logical name: vnet4
       serial: fe:54:00:da:81:0c
       size: 10Mbit/s
       capabilities: ethernet physical
       configuration: autonegotiation=off broadcast=yes driver=tun driverversion=1.6 duplex=full link=yes multicast=yes port=twisted pair speed=10Mbit/s
Comment 44 Julian S. 2021-11-24 21:06:20 UTC
The problem is definitely related to the intel driver. I have had no issues with the servers containing the Broadcom chip and having exactly the same OS configuration, packages installed, kernel version etc. It always appeared on the igb driver. The workaround with ethtool -K eno1 gso off gro off tso off didn't really help. I also tried to change the smp_affinity on the related IRQs (thought it might be related). No luck. But the good news is, that after upgrading to kernel  5.11.0-40-generic the issue is absolutely not reproducable (I have an environment where it was an easy test and always resulted in the Adapter reset). Now no resets visible. Also "Detected Tx Unit Hang" is no more.
Comment 45 Christian 2022-06-14 15:18:46 UTC
Kernels: Problem arises under both 5.18.3 and 5.15.42 (but not necessarily only). So the problem doesn't seem to went away. Happens mostly straight after initial dhcp, so not much net load then. If it doesn't happen, system boots correctly and works.

journal snippet:

Jun 10 15:30:30 zerz2001 kernel: e1000e 0000:00:1f.6 boot0: Detected Hardware Unit Hang:
                                   TDH                  <0>
                                   TDT                  <1>
                                   next_to_use          <1>
                                   next_to_clean        <0>
                                 buffer_info[next_to_clean]:
                                   time_stamp           <fffee272>
                                   next_to_watch        <0>
                                   jiffies              <fffee690>
                                   next_to_watch.status <0>
                                 MAC Status             <80083>
                                 PHY Status             <796d>
                                 PHY 1000BASE-T Status  <3c00>
                                 PHY Extended Status    <3000>
                                 PCI Status             <10>
Jun 10 15:30:32 zerz2001 kernel: ------------[ cut here ]------------
Jun 10 15:30:32 zerz2001 kernel: NETDEV WATCHDOG: boot0 (e1000e): transmit queue 0 timed out
Jun 10 15:30:32 zerz2001 kernel: WARNING: CPU: 2 PID: 0 at net/sched/sch_generic.c:477 dev_watchdog+0x267/0x270
Jun 10 15:30:32 zerz2001 kernel: Modules linked in: i915 aesni_intel crypto_simd cec rc_core ahci intel_gtt cryptd e1000e ttm libahci wmi video xloop_file_fmt_raw(OE) xloop_file_fmt_qcow(OE) xloop(OE) dnbd3(OE) autofs4
Jun 10 15:30:32 zerz2001 kernel: CPU: 2 PID: 0 Comm: swapper/2 Tainted: G           OE     5.15.42 #1
Jun 10 15:30:32 zerz2001 kernel: Hardware name: FUJITSU ESPRIMO Q958/D3613-A1, BIOS V5.0.0.13 R1.13.0 for D3613-A1x                    02/11/2019
Jun 10 15:30:32 zerz2001 kernel: RIP: 0010:dev_watchdog+0x267/0x270
Jun 10 15:30:32 zerz2001 kernel: Code: eb a6 48 8b 5d d0 c6 05 85 a7 fc 00 01 48 89 df e8 4e e0 f9 ff 44 89 e1 48 89 de 48 c7 c7 28 b1 71 bd 48 89 c2 e8 f7 3b 18 00 <0f> 0b eb 83 0f 1f 44 00 00 0f 1f 44 00 00 55 48 89 e5 41 57 49 89
Jun 10 15:30:32 zerz2001 kernel: RSP: 0018:ffffac4d00148e88 EFLAGS: 00010282
Jun 10 15:30:32 zerz2001 kernel: RAX: 0000000000000000 RBX: ffff8db199b7c000 RCX: 000000000000083f
Jun 10 15:30:32 zerz2001 kernel: RDX: 0000000000000000 RSI: 00000000000000f6 RDI: 000000000000083f
Jun 10 15:30:32 zerz2001 kernel: RBP: ffffac4d00148ec0 R08: ffff8db4dc4a03d0 R09: ffffac4d00148c68
Jun 10 15:30:32 zerz2001 kernel: R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
Jun 10 15:30:32 zerz2001 kernel: R13: ffff8db181010280 R14: 0000000000000001 R15: ffff8db199b7c4c0
Jun 10 15:30:32 zerz2001 kernel: FS:  0000000000000000(0000) GS:ffff8db4dc480000(0000) knlGS:0000000000000000
Jun 10 15:30:32 zerz2001 kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jun 10 15:30:32 zerz2001 kernel: CR2: 0000556836b811d8 CR3: 00000001c620a004 CR4: 00000000003706e0
Jun 10 15:30:32 zerz2001 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Jun 10 15:30:32 zerz2001 kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Jun 10 15:30:32 zerz2001 kernel: Call Trace:
Jun 10 15:30:32 zerz2001 kernel:  <IRQ>
Jun 10 15:30:32 zerz2001 kernel:  ? pfifo_fast_enqueue+0x150/0x150
Jun 10 15:30:32 zerz2001 kernel:  call_timer_fn+0x29/0x100
Jun 10 15:30:32 zerz2001 kernel:  run_timer_softirq+0x413/0x490
Jun 10 15:30:32 zerz2001 kernel:  ? lapic_next_deadline+0x2c/0x40
Jun 10 15:30:32 zerz2001 kernel:  ? clockevents_program_event+0x8f/0xe0
Jun 10 15:30:32 zerz2001 kernel:  __do_softirq+0xcc/0x275
Jun 10 15:30:32 zerz2001 kernel:  irq_exit_rcu+0x79/0xa0
Jun 10 15:30:32 zerz2001 kernel:  sysvec_apic_timer_interrupt+0x7c/0x90
Jun 10 15:30:32 zerz2001 kernel:  </IRQ>
Jun 10 15:30:32 zerz2001 kernel:  <TASK>
Jun 10 15:30:32 zerz2001 kernel:  asm_sysvec_apic_timer_interrupt+0x12/0x20
Jun 10 15:30:32 zerz2001 kernel: RIP: 0010:cpuidle_enter_state+0xcc/0x360
Jun 10 15:30:32 zerz2001 kernel: Code: 3d 61 f5 56 43 e8 34 cf 68 ff 49 89 c6 0f 1f 44 00 00 31 ff e8 85 da 68 ff 80 7d d7 00 0f 85 01 01 00 00 fb 66 0f 1f 44 00 00 <45> 85 ff 0f 88 0d 01 00 00 49 63 c7 4c 2b 75 c8 48 8d 14 40 48 8d
Jun 10 15:30:32 zerz2001 kernel: RSP: 0018:ffffac4d000cfe48 EFLAGS: 00000246
Jun 10 15:30:32 zerz2001 kernel: RAX: ffff8db4dc4b07c0 RBX: 0000000000000008 RCX: 000000000000001f
Jun 10 15:30:32 zerz2001 kernel: RDX: 0000000000000000 RSI: 000000003c9b3d5b RDI: 0000000000000000
Jun 10 15:30:32 zerz2001 kernel: RBP: ffffac4d000cfe80 R08: 0000000310e8c483 R09: 0000000000022b00
Jun 10 15:30:32 zerz2001 kernel: R10: 00000000dc4a2000 R11: ffff8db4dc4af484 R12: ffffcc4cffc91300
Jun 10 15:30:32 zerz2001 kernel: R13: ffffffffbda793a0 R14: 0000000310e8c483 R15: 0000000000000008
Jun 10 15:30:32 zerz2001 kernel:  ? cpuidle_enter_state+0xbb/0x360
Jun 10 15:30:32 zerz2001 kernel:  cpuidle_enter+0x2e/0x40
Jun 10 15:30:32 zerz2001 kernel:  call_cpuidle+0x23/0x40
Jun 10 15:30:32 zerz2001 kernel:  do_idle+0x1e6/0x260
Jun 10 15:30:32 zerz2001 kernel:  cpu_startup_entry+0x20/0x30
Jun 10 15:30:32 zerz2001 kernel:  start_secondary+0x11a/0x150
Jun 10 15:30:32 zerz2001 kernel:  secondary_startup_64_no_verify+0xb0/0xbb
Jun 10 15:30:32 zerz2001 kernel:  </TASK>
Jun 10 15:30:32 zerz2001 kernel: ---[ end trace f63dbc1bc6719ce1 ]---


lspci says:
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (7) I219-LM (rev 10)

lspci -n:
00:1f.6 0200: 8086:15bb (rev 10)

lspci -v:
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (7) I219-LM (rev 10)
        DeviceName: Onboard - Ethernet
        Subsystem: Fujitsu Technology Solutions Ethernet Connection (7) I219-LM
        Flags: bus master, fast devsel, latency 0, IRQ 132
        Memory at 8f900000 (32-bit, non-prefetchable) [size=128K]
        Capabilities: [c8] Power Management version 3
        Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Kernel driver in use: e1000e
        Kernel modules: e1000e
Comment 46 Steven Haigh 2022-06-28 02:02:00 UTC
So I'll just add to this - as I fell down this rabbithole while trying to diagnose corosync failures where network connectivity on an Intel NUC dies for multiple seconds.

The error printed to dmesg is:
[293502.911056] e1000e 0000:00:1f.6 eno1: Detected Hardware Unit Hang:
                  TDH                  <fe>
                  TDT                  <65>
                  next_to_use          <65>
                  next_to_clean        <fd>
                buffer_info[next_to_clean]:
                  time_stamp           <1045e7288>
                  next_to_watch        <fe>
                  jiffies              <1045e7400>
                  next_to_watch.status <0>
                MAC Status             <80083>
                PHY Status             <796d>
                PHY 1000BASE-T Status  <3800>
                PHY Extended Status    <3000>
                PCI Status             <10>
[293504.899112] e1000e 0000:00:1f.6 eno1: Detected Hardware Unit Hang:
                  TDH                  <fe>
                  TDT                  <65>
                  next_to_use          <65>
                  next_to_clean        <fd>
                buffer_info[next_to_clean]:
                  time_stamp           <1045e7288>
                  next_to_watch        <fe>
                  jiffies              <1045e75f1>
                  next_to_watch.status <0>
                MAC Status             <80083>
                PHY Status             <796d>
                PHY 1000BASE-T Status  <3800>
                PHY Extended Status    <3000>
                PCI Status             <10>


Hardware details:

Extract from dmidecode:
Handle 0x0000, DMI type 0, 26 bytes
BIOS Information
        Vendor: Intel Corp.
        Version: PNWHL57v.0047.2022.0330.1436
        Release Date: 03/30/2022

System Information
        Manufacturer: Intel(R) Client Systems
        Product Name: NUC8v7PNH
        Version: K60013-402
        Serial Number: <sn>
        UUID: a15f153a-eb5f-11ea-a0f5-4002a8e72d00
        Wake-up Type: Power Switch
        SKU Number: BKNUC8v7PNH
        Family: PN

# lspci | grep Ethernet
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (6) I219-LM (rev 30)

# cat /sys/class/mei/mei0/fw_ver
0:12.0.90.2072
0:12.0.90.2072
0:12.0.45.1509

Kernel Version:
Linux version 5.15.35-3-pve (build@proxmox) (gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2) #1 SMP PVE 5.15.35-6 (Fri, 17 Jun 2022 13:42:35 +0200)


I am currently testing with disabling tso / gso / gro - and this seems to reduce the problem, but I'm not yet convinced that it works around the issue:

In /etc/network/interfaces:

iface eno1 inet manual
        post-up /usr/bin/logger -p debug -t ifup "Disabling segmentation offload for eno1" && /sbin/ethtool -K $IFACE tso off gso off gro off && /usr/bin/logger -p debug -t ifup "Disabled offload for eno1"

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