Re: e1000e interface hang on 82574L

From: Chris Boot
Date: Sat Mar 17 2012 - 13:54:38 EST

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On 17/03/2012 15:59, Chris Boot wrote:

On 16/01/2012 16:04, Chris Boot wrote:
On 16/01/2012 15:56, Wyborny, Carolyn wrote:

-----Original Message-----
From: Chris Boot [mailto:bootc@xxxxxxxxx]
Sent: Sunday, January 15, 2012 3:11 AM
To: Wyborny, Carolyn
Cc: netdev; lkml; e1000-devel@xxxxxxxxxxxxxxxxxxxxx
Subject: Re: e1000e interface hang on 82574L

On 04/01/2012 17:12, Chris Boot wrote:
On 03/01/2012 00:02, Wyborny, Carolyn wrote:

-----Original Message-----
From: netdev-owner@xxxxxxxxxxxxxxx [mailto:netdev-

owner@xxxxxxxxxxxxxxx]
On Behalf Of Chris Boot
Sent: Saturday, December 31, 2011 1:32 AM
To: netdev; lkml; e1000-devel@xxxxxxxxxxxxxxxxxxxxx
Subject: Re: e1000e interface hang on 82574L

On 27 Dec 2011, at 22:01, Chris Boot wrote:

Hi folks,

Another networking issue I've run into, this time with e1000e
(Intel
Corporation 82574L Gigabit). My new VM cluster appears to drop a NIC
-
the port stops responding within Linux and shows the link as being
down
with ethtool. My ISP says 'Ports running Half Duplex or reduced
speed'
on the port.
When the port stops working I see this in dmesg:

[35481.659629] ------------[ cut here ]------------
[35481.667837] WARNING: at net/sched/sch_generic.c:255

dev_watchdog+0xe9/0x148()
[35481.676370] Hardware name: X9SCL/X9SCM
[35481.684793] NETDEV WATCHDOG: eth2 (e1000e): transmit queue 0

timed
out
[35481.684795] Modules linked in: hmac sha256_generic dlm configfs
ebtable_nat ebtables acpi_cpufreq mperf cpufreq_stats
cpufreq_conservative cpufreq_userspace cpufreq_powersave microcode
xt_NOTRACK ip_set_hash_net act_police cls_basic cls_flow cls_fw

cls_u32
sch_tbf sch_prio sch_htb sch_hfsc sch_ingress sch_sfq xt_connlimit
xt_realm xt_addrtype ip_set_hash_ip iptable_raw xt_comment xt_recent
ipt_ULOG ipt_REJECT ipt_REDIRECT ipt_NETMAP ipt_MASQUERADE ipt_ECN
ipt_ecn ipt_CLUSTERIP ipt_ah nf_nat_tftp nf_nat_snmp_basic
nf_conntrack_snmp nf_nat_sip nf_nat_pptp nf_nat_proto_gre nf_nat_irc
nf_nat_h323 nf_nat_ftp ip6_queue nf_nat_amanda xt_set ip_set
nf_conntrack_tftp nf_conntrack_sip nf_conntrack_sane
nf_conntrack_proto_udplite nf_conntrack_proto_sctp nf_conntrack_pptp
nf_conntrack_proto_gre nf_conntrack_netlink nf_conntrack_netbios_ns
nf_conntrack_broadcast nf_conntrack_irc nf_conntrack_h323
nf_conntrack_ftp ts_kmp nf_conntrack_amanda xt_TPROXY xt_NFLOG
nfnetlink_log nf_tproxy_core xt_time xt_TCPMSS xt_tcpmss xt_sctp
xt_policy xt_pkttype xt_physdev xt_owner xt_NFQUEUE xt_multiport

xt_mark
xt_mac xt_limit xt_length xt_iprange xt_helper xt_hashlimit xt_DSCP
xt_dscp xt_dccp xt_connmark xt_CLASSIFY xt_AUDIT ip6t_LOG

ip6t_REJECT
nf_conntrack_ipv6 nf_defrag_ipv6 xt_conntrack ip6table_raw ipt_LOG
xt_tcpudp ip6table_mangle xt_state iptable_nat nf_nat

nf_conntrack_ipv4
nf_defrag_ipv4 nf_conntrack iptable_mangle nfnetlink iptable_filter
ip_tables ip6table_filter ip6_tables x_tables bridge stp bonding
w83627ehf hwmon_vid coretemp sha1_ssse3 sha1_generic crc32c_intel
aesni_intel cryptd aes_x86_64 aes_generic ipmi_poweroff ipmi_devintf
ipmi_si ipmi_msghandler vhost_net macvtap macvlan tun drbd lru_cache

cn
loop kvm_intel kvm snd_pcm snd_timer snd iTCO_wdt soundcore psmouse
snd_page_alloc i2c_i801 i2c_core cdc_acm iTCO_vendor_support joydev
evdev serio_raw processor button pcspkr thermal_sys ext4 mbcache

jbd2
crc16 dm_mod raid1 md_mod sd_mod crc_t10dif usb_storage uas usbhid
hid
ahci libahci libata igb ehci_hcd scsi_mod usbcore e1000e dca
usb_common
[last unloaded: scsi_wait_scan]
[35481.685740] Pid: 0, comm: swapper/4 Not tainted 3.2.0-rc6+ #4
[35481.685744] Call Trace:
[35481.685746]<IRQ> [<ffffffff810467ed>] ?

warn_slowpath_common+0x78/0x8c
[35481.685849] [<ffffffff81046899>] ? warn_slowpath_fmt+0x45/0x4a
[35481.685875] [<ffffffff810aeaa0>] ?

perf_event_task_tick+0x166/0x1ab
[35481.686018] [<ffffffff81294219>] ? netif_tx_lock+0x40/0x72
[35481.686090] [<ffffffff8129437a>] ? dev_watchdog+0xe9/0x148
[35481.686136] [<ffffffff81051e58>] ? run_timer_softirq+0x19a/0x261
[35481.686176] [<ffffffff81294291>] ? netif_tx_unlock+0x46/0x46
[35481.686215] [<ffffffff810659bb>] ? timekeeping_get_ns+0xd/0x2a
[35481.686286] [<ffffffff8104bdd4>] ? __do_softirq+0xb9/0x177
[35481.686365] [<ffffffff81341d6c>] ? call_softirq+0x1c/0x30
[35481.686530] [<ffffffff8100f841>] ? do_softirq+0x3c/0x7b
[35481.686580] [<ffffffff8104c03c>] ? irq_exit+0x3c/0x9a
[35481.686742] [<ffffffff81023e58>] ?

smp_apic_timer_interrupt+0x74/0x82
[35481.686820] [<ffffffff813405de>] ?
apic_timer_interrupt+0x6e/0x80
[35481.686826]<EOI> [<ffffffff811ddf49>] ? intel_idle+0xea/0x119
[35481.686991] [<ffffffff811ddf28>] ? intel_idle+0xc9/0x119
[35481.687051] [<ffffffff8125dce3>] ? cpuidle_idle_call+0xec/0x179
[35481.687089] [<ffffffff8100d255>] ? cpu_idle+0xa1/0xe8
[35481.687143] [<ffffffff810706ee>] ?

arch_local_irq_restore+0x2/0x8
[35481.687189] [<ffffffff8132d191>] ? start_secondary+0x1d5/0x1db
[35481.687234] ---[ end trace 01e9907674757948 ]---
[35481.687817] e1000e 0000:05:00.0: eth2: Reset adapter

To try to regain connectivity I bring down the bond and the
interface
(eth2), then unload e1000e. Upon loading the module again:
[36021.888962] e1000e: Intel(R) PRO/1000 Network Driver - 1.5.1-k
[36021.900258] e1000e: Copyright(c) 1999 - 2011 Intel Corporation.
[36021.911446] e1000e 0000:00:19.0: PCI INT A -> GSI 20 (level,

low) -
IRQ 20
[36021.923204] e1000e 0000:00:19.0: setting latency timer to 64
[36021.923372] e1000e 0000:00:19.0: irq 45 for MSI/MSI-X
[36022.202737] e1000e 0000:00:19.0: eth2: (PCI

Express:2.5GT/s:Width
x1) 00:25:90:56:ac:75
[36022.214480] e1000e 0000:00:19.0: eth3: Intel(R) PRO/1000 Network
Connection
[36022.227506] e1000e 0000:00:19.0: eth3: MAC: 10, PHY: 11, PBA No:
FFFFFF-0FF
[36022.239789] e1000e 0000:05:00.0: Disabling ASPM L0s
[36022.239805] e1000e 0000:05:00.0: enabling device (0000 -> 0002)
[36022.239829] e1000e 0000:05:00.0: PCI INT A -> GSI 16 (level,

low) -
IRQ 16
[36022.239921] e1000e 0000:05:00.0: setting latency timer to 64
[36022.240963] e1000e 0000:05:00.0: irq 64 for MSI/MSI-X
[36022.240995] e1000e 0000:05:00.0: irq 65 for MSI/MSI-X
[36022.241028] e1000e 0000:05:00.0: irq 66 for MSI/MSI-X
[36022.241596] e1000e 0000:05:00.0: PCI INT A disabled
[36022.241606] e1000e: probe of 0000:05:00.0 failed with error -2
[36022.304706] udevd[3634]: renamed network interface eth2 to eth3

I then don't get an eth2 interface. Only a reboot brings the
interface
back. This has happened twice so far on this server in the past
week,
both times using v3.2-rc7-3-g4962516.
lspci -vnn shows:

05:00.0 Ethernet controller [0200]: Intel Corporation 82574L
Gigabit
Network Connection [8086:10d3]
Subsystem: Super Micro Computer Inc Device [15d9:0000]
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at fbd00000 (32-bit, non-prefetchable) [size=128K]
I/O ports at e000 [size=32]
Memory at fbd20000 (32-bit, non-prefetchable) [size=16K]
Capabilities: [c8] Power Management version 2
Capabilities: [d0] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [e0] Express Endpoint, MSI 00
Capabilities: [a0] MSI-X: Enable+ Count=5 Masked-
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number 00-25-90-ff-ff-56-ac-

74
Kernel driver in use: e1000e
I've just had this happen on my other (identical) server with a
nearly
identical trace. Is there anything I can do do avoid this at all or
at
least help narrow down the problem?

Cheers,
Chris

--
Chris Boot
bootc@xxxxxxxxx

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Hello,

Sorry for the delay in responding. We have seen some hang issues
using
MSI-X on 82574 parts. Can you try reloading the driver the IntMode
module parameter. IntMode=1 (you'll need a setting for each device in
the system so two adapters would be IntMode=1,1) See if that changes
the symptom you are seeing with this part. That setting will make

sure
the adapter uses MSI interrupts instead of MSI-X.
Carolyn,

I'll give this a go next time I reproduce it. I built a new kernel
with
more debugging and so far it hasn't yet triggered again...
Upgrading to a more recent 3.2-rc snapshot seems to have cured the
problem - I haven't had an interface stop responding since. Must have
been some seemingly unrelated patch that I can't seem to locate.

Cheers,
Chris

--
Chris Boot
bootc@xxxxxxxxx

Thanks for letting me know Chris. For my own edification, are you
still configured with MSI-X?

Carolyn,

I have made no changes to my configuration to change the interrupt
format. I see the following in dmesg at boot:

[ 3.276819] e1000e: Intel(R) PRO/1000 Network Driver - 1.5.1-k
[ 3.288193] e1000e: Copyright(c) 1999 - 2011 Intel Corporation.

[ 3.299842] e1000e 0000:00:19.0: PCI INT A -> GSI 20 (level, low)
-> IRQ 20
[ 3.299909] e1000e 0000:00:19.0: setting latency timer to 64
[ 3.352929] e1000e 0000:00:19.0: irq 45 for MSI/MSI-X
[ 3.710080] e1000e 0000:00:19.0: eth2: (PCI Express:2.5GT/s:Width
x1) 00:25:90:56:ac:75
[ 3.710082] e1000e 0000:00:19.0: eth2: Intel(R) PRO/1000 Network
Connection
[ 3.710670] e1000e 0000:00:19.0: eth2: MAC: 10, PHY: 11, PBA No:
FFFFFF-0FF

[ 3.710678] e1000e 0000:05:00.0: Disabling ASPM L0s
[ 3.710850] e1000e 0000:05:00.0: PCI INT A -> GSI 16 (level, low)
-> IRQ 16
[ 3.710951] e1000e 0000:05:00.0: setting latency timer to 64
[ 3.712757] e1000e 0000:05:00.0: irq 64 for MSI/MSI-X
[ 3.712787] e1000e 0000:05:00.0: irq 65 for MSI/MSI-X
[ 3.712805] e1000e 0000:05:00.0: irq 66 for MSI/MSI-X
[ 3.830364] e1000e 0000:05:00.0: eth3: (PCI Express:2.5GT/s:Width
x1) 00:25:90:56:ac:74
[ 3.830366] e1000e 0000:05:00.0: eth3: Intel(R) PRO/1000 Network
Connection
[ 3.830510] e1000e 0000:05:00.0: eth3: MAC: 3, PHY: 8, PBA No:
FFFFFF-0FF

/proc/interrupts shows:

45: 615958 0 0 0 0 0
0 0 IR-PCI-MSI-edge eth3
64: 65126106 0 0 0 0 0
0 0 IR-PCI-MSI-edge eth2-rx-0
65: 52700392 0 0 0 0 0
0 0 IR-PCI-MSI-edge eth2-tx-0
66: 2 0 0 0 0 0
0 0 IR-PCI-MSI-edge eth2

Carolyn,

I've just had the opportunity to upgrade to a 3.2.9 kernel on these
systems and have made sure e1000e is loaded with IntMode=1,1. One of the
servers was only up 5.5 hours before the NIC has crashed/stopped working
again.

Here is the latest dmesg after the failure:

[ 3.254553] e1000e: Intel(R) PRO/1000 Network Driver - 1.5.1-k
[ 3.265852] e1000e: Copyright(c) 1999 - 2011 Intel Corporation.
[ 3.266034] e1000e 0000:00:19.0: PCI INT A -> GSI 20 (level, low) ->
IRQ 20
[ 3.266067] e1000e 0000:00:19.0: setting latency timer to 64
[ 3.266460] e1000e 0000:00:19.0: (unregistered net_device): Interrupt
Mode set to 1
[ 3.266800] e1000e 0000:00:19.0: irq 45 for MSI/MSI-X
[ 3.611840] e1000e 0000:00:19.0: eth2: (PCI Express:2.5GT/s:Width x1)
00:25:90:56:ac:75
[ 3.611855] e1000e 0000:00:19.0: eth2: Intel(R) PRO/1000 Network
Connection
[ 3.612303] e1000e 0000:00:19.0: eth2: MAC: 10, PHY: 11, PBA No:
FFFFFF-0FF
[ 3.612350] e1000e 0000:05:00.0: Disabling ASPM L0s
[ 3.612594] e1000e 0000:05:00.0: PCI INT A -> GSI 16 (level, low) ->
IRQ 16
[ 3.612812] e1000e 0000:05:00.0: setting latency timer to 64
[ 3.613582] e1000e 0000:05:00.0: (unregistered net_device): Interrupt
Mode set to 1
[ 3.614156] e1000e 0000:05:00.0: irq 64 for MSI/MSI-X
[ 3.734442] e1000e 0000:05:00.0: eth3: (PCI Express:2.5GT/s:Width x1)
00:25:90:56:ac:74
[ 3.734465] e1000e 0000:05:00.0: eth3: Intel(R) PRO/1000 Network
Connection
[ 3.734689] e1000e 0000:05:00.0: eth3: MAC: 3, PHY: 8, PBA No: FFFFFF-0FF
[ 13.799848] e1000e 0000:05:00.0: irq 64 for MSI/MSI-X
[ 13.855646] e1000e 0000:05:00.0: irq 64 for MSI/MSI-X
[ 14.031739] e1000e 0000:00:19.0: irq 45 for MSI/MSI-X
[ 14.087566] e1000e 0000:00:19.0: irq 45 for MSI/MSI-X
[ 16.112504] e1000e: eth2 NIC Link is Up 100 Mbps Full Duplex, Flow
Control: None
[ 16.124129] e1000e 0000:05:00.0: eth2: 10/100 speed: disabling TSO

And here is the output just as it hangs:

[19745.327241] ------------[ cut here ]------------
[19745.334501] WARNING: at
/build/buildd-linux-2.6_3.2.9-1-amd64-KTPapN/linux-2.6-3.2.9/debian/build/source_amd64_none/net/sched/sch_generic.c:255
dev_watchdog+0xe9/0x148()
[19745.350441] Hardware name: X9SCL/X9SCM
[19745.358859] NETDEV WATCHDOG: eth2 (e1000e): transmit queue 0 timed out
[19745.367287] Modules linked in: hmac sha256_generic dlm configfs
ebtable_nat ebtables acpi_cpufreq mperf cpufreq_stats
cpufreq_conservative cpufreq_userspace cpufreq_powersave microcode
ip6_queue xt_TCPMSS xt_sctp ip6t_LOG ip6t_REJECT nf_conntrack_ipv6
ip6table_raw ip6table_mangle ip6table_filter xt_NOTRACK ip_set_hash_net
act_police cls_basic cls_flow cls_fw cls_u32 sch_tbf sch_prio sch_htb
sch_hfsc sch_ingress sch_sfq xt_statistic xt_CT xt_time xt_connlimit
xt_realm xt_addrtype ip_set_hash_ip iptable_raw xt_comment xt_recent
xt_policy ipt_ULOG ipt_REJECT ipt_REDIRECT ipt_NETMAP ipt_MASQUERADE
ipt_ECN ipt_ecn ipt_CLUSTERIP ipt_ah xt_set ip_set nf_nat_tftp
nf_nat_snmp_basic nf_conntrack_snmp nf_nat_sip nf_nat_pptp
nf_nat_proto_gre nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat_amanda ts_kmp
nf_conntrack_amanda nf_conntrack_sane nf_conntrack_tftp nf_conntrack_sip
nf_conntrack_proto_udplite nf_conntrack_proto_sctp nf_conntrack_pptp
nf_conntrack_proto_gre nf_conntrack_netlink nf_conntrack_netbios_ns
nf_conntrack_broadcast nf_conntrack_irc nf_conntrack_h323
nf_conntrack_ftp xt_TPROXY nf_tproxy_core ip6_tables nf_defrag_ipv6
xt_tcpmss xt_pkttype xt_physdev xt_owner xt_NFQUEUE xt_NFLOG
nfnetlink_log xt_multiport xt_mark xt_mac xt_limit xt_length xt_iprange
xt_helper xt_hashlimit xt_DSCP xt_dscp xt_dccp xt_conntrack xt_connmark
xt_CLASSIFY xt_AUDIT ipt_LOG xt_tcpudp xt_state iptable_nat nf_nat
nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack iptable_mangle nfnetlink
iptable_filter ip_tables x_tables kvm_intel kvm bridge stp bonding
w83627ehf hwmon_vid coretemp sha1_ssse3 sha1_generic crc32c_intel
aesni_intel cryptd aes_x86_64 aes_generic ipmi_poweroff ipmi_devintf
ipmi_si ipmi_msghandler vhost_net macvtap macvlan tun drbd lru_cache cn
loop snd_pcm snd_timer snd soundcore snd_page_alloc iTCO_wdt i2c_i801
psmouse cdc_acm processor i2c_core iTCO_vendor_support serio_raw pcspkr
thermal_sys button evdev joydev ext4 mbcache jbd2 crc16 dm_mod raid1
md_mod sd_mod crc_t10dif usb_storage uas usbhid hid ahci libahci libata
ehci_hcd usbcore igb scsi_mod e1000e usb_common dca [last unloaded:
scsi_wait_scan]
[19745.502559] Pid: 0, comm: swapper/0 Not tainted 3.2.0-2-amd64 #1
[19745.502561] Call Trace:
[19745.502562]<IRQ> [<ffffffff81046879>] ? warn_slowpath_common+0x78/0x8c
[19745.502570] [<ffffffff81046925>] ? warn_slowpath_fmt+0x45/0x4a
[19745.502574] [<ffffffff8129aa11>] ? netif_tx_lock+0x40/0x72
[19745.502588] [<ffffffff8129ab72>] ? dev_watchdog+0xe9/0x148
[19745.502601] [<ffffffff81051f38>] ? run_timer_softirq+0x19a/0x261
[19745.502603] [<ffffffff8129aa89>] ? netif_tx_unlock+0x46/0x46
[19745.502606] [<ffffffff81065a73>] ? timekeeping_get_ns+0xd/0x2a
[19745.502609] [<ffffffff8104be98>] ? __do_softirq+0xb9/0x177
[19745.502612] [<ffffffff8134892c>] ? call_softirq+0x1c/0x30
[19745.502615] [<ffffffff8100f8e5>] ? do_softirq+0x3c/0x7b
[19745.502617] [<ffffffff8104c100>] ? irq_exit+0x3c/0x9a
[19745.502621] [<ffffffff81023f18>] ? smp_apic_timer_interrupt+0x74/0x82
[19745.502624] [<ffffffff8134719e>] ? apic_timer_interrupt+0x6e/0x80
[19745.502625]<EOI> [<ffffffff81070761>] ? arch_local_irq_save+0x11/0x17
[19745.502631] [<ffffffff811e45d9>] ? intel_idle+0xea/0x119
[19745.502633] [<ffffffff811e45b8>] ? intel_idle+0xc9/0x119
[19745.502637] [<ffffffff812643f7>] ? cpuidle_idle_call+0xec/0x179
[19745.502639] [<ffffffff8100d248>] ? cpu_idle+0xa5/0xf2
[19745.502641] [<ffffffff816aab3d>] ? start_kernel+0x3bd/0x3c8
[19745.502643] [<ffffffff816aa140>] ? early_idt_handlers+0x140/0x140
[19745.502645] [<ffffffff816aa3c4>] ? x86_64_start_kernel+0x104/0x111
[19745.502646] ---[ end trace 10e791a6f31603fa ]---
[19745.503125] e1000e 0000:05:00.0: eth2: Reset adapter

Once again, rmmod e1000e followed by modprobe e1000e does not fix the
problem:

[20508.158919] e1000e 0000:05:00.0: PCI INT A disabled
[20508.194927] e1000e 0000:00:19.0: PCI INT A disabled
[20511.119765] e1000e: Intel(R) PRO/1000 Network Driver - 1.5.1-k
[20511.130711] e1000e: Copyright(c) 1999 - 2011 Intel Corporation.
[20511.141206] e1000e 0000:00:19.0: PCI INT A -> GSI 20 (level, low) ->
IRQ 20
[20511.151797] e1000e 0000:00:19.0: setting latency timer to 64
[20511.151921] e1000e 0000:00:19.0: (unregistered net_device): Interrupt
Mode set to 1
[20511.162853] e1000e 0000:00:19.0: irq 45 for MSI/MSI-X
[20511.528436] e1000e 0000:00:19.0: eth2: (PCI Express:2.5GT/s:Width x1)
00:25:90:56:ac:75
[20511.539261] e1000e 0000:00:19.0: eth3: Intel(R) PRO/1000 Network
Connection
[20511.550066] e1000e 0000:00:19.0: eth3: MAC: 10, PHY: 11, PBA No:
FFFFFF-0FF
[20511.561027] e1000e 0000:05:00.0: Disabling ASPM L0s
[20511.571883] e1000e 0000:05:00.0: enabling device (0000 -> 0002)
[20511.575224] udevd[5449]: renamed network interface eth2 to eth3
[20511.594234] e1000e 0000:05:00.0: PCI INT A -> GSI 16 (level, low) ->
IRQ 16
[20511.605703] e1000e 0000:05:00.0: setting latency timer to 64
[20511.605871] e1000e 0000:05:00.0: (unregistered net_device): Interrupt
Mode set to 1
[20511.617706] e1000e 0000:05:00.0: irq 64 for MSI/MSI-X
[20511.617828] e1000e 0000:05:00.0: PCI INT A disabled
[20511.629565] e1000e: probe of 0000:05:00.0 failed with error -2

Please let me know if/how I can debug this further.

As further information, I have a machine with the same NIC and chipset (Intel S1200BTL motherboard) but with quite different lspci -vvv outputs. Both are pasted below.

First, from the working S1200BTL:

03:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
Subsystem: Intel Corporation Device 3578
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, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 16
Region 0: Memory at c1300000 (32-bit, non-prefetchable) [size=128K]
Region 2: I/O ports at 2000 [size=32]
Region 3: Memory at c1320000 (32-bit, non-prefetchable) [size=16K]
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: 0000000000000000 Data: 0000
Capabilities: [e0] Express (v1) Endpoint, MSI 00
DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable+ Non-Fatal+ Fatal+ Unsupported+
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <128ns, L1 <64us
ClockPM- Surprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
Capabilities: [a0] MSI-X: Enable+ Count=5 Masked-
Vector table: BAR=3 offset=00000000
PBA: BAR=3 offset=00002000
Capabilities: [100 v1] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq+ ACSViol-
UESvrt: DLP+ SDES- TLP+ FCP+ CmpltTO+ CmpltAbrt+ UnxCmplt+ RxOF+ MalfTLP+ ECRC- UnsupReq+ ACSViol-
CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn-
Capabilities: [140 v1] Device Serial Number 00-1e-67-ff-ff-14-69-f4
Kernel driver in use: e1000e

And from the Supermicro server, where the NIC hangs:

05:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
Subsystem: Super Micro Computer Inc Device 0000
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, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 65
Region 0: Memory at fbd00000 (32-bit, non-prefetchable) [size=128K]
Region 2: I/O ports at e000 [size=32]
Region 3: Memory at fbd20000 (32-bit, non-prefetchable) [size=16K]
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: 00000000fee00858 Data: 0000
Capabilities: [e0] Express (v1) Endpoint, MSI 00
DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable+ Non-Fatal+ Fatal+ Unsupported+
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <128ns, L1 <64us
ClockPM- Surprise- LLActRep- BwNot-
LnkCtl: ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
Capabilities: [a0] MSI-X: Enable- Count=5 Masked-
Vector table: BAR=3 offset=00000000
PBA: BAR=3 offset=00002000
Capabilities: [100 v1] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq+ ACSViol-
UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
CESta: RxErr+ BadTLP+ BadDLLP+ Rollover- Timeout- NonFatalErr+
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
AERCap: First Error Pointer: 14, GenCap- CGenEn- ChkCap- ChkEn-
Capabilities: [140 v1] Device Serial Number 00-25-90-ff-ff-56-ac-74
Kernel driver in use: e1000e

Most notably it appears as though MSI-X is not enabled on the Supermicro, and ASPM L1 is. There appears to be no difference on the Supermicro as to the MSI-X status when booting with IntMode=1,1 compared to without it.

Thanks,
Chris

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