FYI this seems fixed since 2015-02-12 when I ran this fix: sudo ethtool -K com gso off gro off tso off
Which I found at: http://serverfault.com/questions/616485/e1000e-reset-adapter-unexpectedly-detected-hardware-unit-hang Here's a log of how many times it happened each day, 0 times since the fix on 2015-02-12, always at least once every day, so I think it's conclusive. 12 2015-01-18 17 2015-01-19 10 2015-01-20 11 2015-01-21 21 2015-01-22 17 2015-01-23 20 2015-01-24 20 2015-01-25 16 2015-01-26 15 2015-01-27 20 2015-01-28 14 2015-01-29 10 2015-01-30 20 2015-01-31 21 2015-02-01 20 2015-02-02 5 2015-02-03 11 2015-02-04 67 2015-02-05 14 2015-02-06 22 2015-02-07 27 2015-02-08 16 2015-02-09 8 2015-02-10 39 2015-02-11 24 2015-02-12 On 01/27/2015 11:27 AM, Peter Maloney wrote: > Hi, I have a problem on a machine running CentOS 7.0, where the > kernel/e1000e reports things like "Detected Hardware Unit Hang:" and > "Reset adapter unexpectedly". The kernel version is > 3.10.0-123.13.2.el7.x86_64. > > I had a similar issue years ago with the same machine running openSUSE > 12.3 with kernel 3.7.10, and downgrading to 3.4.47 fixed it completely. > At that time, I found this bug reported in fedora, marked as WONTFIX due > to the fedora release hitting EoL > https://bugzilla.redhat.com/show_bug.cgi?id=785806 and the dmesg output > looks similar. And recently I found this old bug for CentOS 6. > http://bugs.centos.org/view.php?id=6517 to which I replied but haven't > seen any activity there for a week. > > Years ago on openSUSE 12.3 with kernel 3.7.10, this would eventually > make the network fail completely requiring a reboot. So far (up 12 days) > the machine with 3.10.x hasn't been disconnected long enough to be > noticeable. > > I have seen > http://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git/commit/?id=09357b00255c233705b1cf6d76a8d147340545b8 > as mentioned in the fedora bug page, and it appears to already be > applied to this kernel. > > *Here are the details for the machine with the problem: > > *root@machine:~ # lsb_release -a > LSB Version: :core-4.1-amd64:core-4.1-noarch > Distributor ID: CentOS > Description: CentOS Linux release 7.0.1406 (Core) > Release: 7.0.1406 > Codename: Core > > root@machine:~ # uname -a > Linux machine.bc.local 3.10.0-123.13.2.el7.x86_64 #1 SMP Thu Dec 18 > 14:09:13 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux > > root@machine:~ # lspci -v > ... > 00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network > Connection (rev 05) > Subsystem: Super Micro Computer Inc Device 1502 > Flags: bus master, fast devsel, latency 0, IRQ 42 > Memory at dfd00000 (32-bit, non-prefetchable) [size=128K] > Memory at dfd25000 (32-bit, non-prefetchable) [size=4K] > I/O ports at f020 [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 > > > Here is dmesg right after boot and plugging in network after booted: > > [ 368.697841] e1000e 0000:00:19.0 com: Detected Hardware Unit Hang: > TDH <3d> > TDT <67> > next_to_use <67> > next_to_clean <39> > buffer_info[next_to_clean]: > time_stamp <1000106e9> > next_to_watch <3d> > jiffies <100010c60> > next_to_watch.status <0> > MAC Status <40080083> > PHY Status <796d> > PHY 1000BASE-T Status <3800> > PHY Extended Status <3000> > PCI Status <10> > [ 370.696960] e1000e 0000:00:19.0 com: Detected Hardware Unit Hang: > TDH <3d> > TDT <67> > next_to_use <67> > next_to_clean <39> > buffer_info[next_to_clean]: > time_stamp <1000106e9> > next_to_watch <3d> > jiffies <100011430> > next_to_watch.status <0> > MAC Status <40080083> > PHY Status <796d> > PHY 1000BASE-T Status <3800> > PHY Extended Status <3000> > PCI Status <10> > [ 372.695807] e1000e 0000:00:19.0 com: Detected Hardware Unit Hang: > TDH <3d> > TDT <67> > next_to_use <67> > next_to_clean <39> > buffer_info[next_to_clean]: > time_stamp <1000106e9> > next_to_watch <3d> > jiffies <100011c00> > next_to_watch.status <0> > MAC Status <40080083> > PHY Status <796d> > PHY 1000BASE-T Status <3800> > PHY Extended Status <3000> > PCI Status <10> > [ 374.694933] e1000e 0000:00:19.0 com: Detected Hardware Unit Hang: > TDH <3d> > TDT <67> > next_to_use <67> > next_to_clean <39> > buffer_info[next_to_clean]: > time_stamp <1000106e9> > next_to_watch <3d> > jiffies <1000123d0> > next_to_watch.status <0> > MAC Status <40080083> > PHY Status <796d> > PHY 1000BASE-T Status <3800> > PHY Extended Status <3000> > PCI Status <10> > [ 374.710096] ------------[ cut here ]------------ > [ 374.710124] WARNING: at net/sched/sch_generic.c:259 > dev_watchdog+0x270/0x280() > [ 374.710128] NETDEV WATCHDOG: com (e1000e): transmit queue 0 timed out > [ 374.710131] Modules linked in: binfmt_misc act_police cls_basic > cls_flow cls_fw cls_u32 sch_fq_codel sch_tbf sch_prio sch_htb sch_hfsc > sch_ingress sch_sfq xt_CHECKSUM ipt_rpfilter xt_stat > istic xt_CT xt_connlimit xt_realm xt_addrtype xt_comment xt_recent > xt_nat ipt_REJECT ipt_MASQUERADE ipt_ECN ipt_CLUSTERIP ipt_ah xt_set > ip_set ipt_ULOG xt_LOG nf_nat_tftp nf_nat_snmp_basic n > f_conntrack_snmp nf_nat_sip nf_nat_pptp nf_nat_proto_gre nf_nat_irc > nf_nat_h323 nf_nat_amanda ts_kmp nf_conntrack_amanda nf_conntrack_sane > nf_conntrack_tftp nf_conntrack_sip nf_conntrack_pro > to_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 xt_TPROXY > nf_defrag_ipv6 xt_time xt_TCPMSS xt_tcpmss xt_sctp > [ 374.710177] xt_policy 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 xt_state iptable_raw iptable_nat > nf_nat_ipv4 nf_conntrack_ipv4 nf_defrag_ipv4 iptable_mangle nfnetlink > nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack iptable_filter ip_tables > 8021q garp stp mrp llc sg iTCO_wdt iTCO_vendor_support coretemp kvm > crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel > aesni_intel lrw gf128mul glue_helper ablk_helper cryptd serio_raw pcspkr > i2c_i801 lpc_ich mfd_core shpchp ipmi_si video ipmi_msghandler > acpi_cpufreq mperf ext4 mbcache jbd2 raid1 sd_mod crc_t10dif > crct10dif_common mgag200 syscopyarea sysfillrect ahci sysimgblt > [ 374.710232] drm_kms_helper libahci ttm libata drm igb e1000e dca > i2c_algo_bit i2c_core ptp pps_core dm_mirror dm_region_hash dm_log dm_mod > [ 374.710247] CPU: 1 PID: 0 Comm: swapper/1 Not tainted > 3.10.0-123.13.2.el7.x86_64 #1 > [ 374.710251] Hardware name: Supermicro X9SCL/X9SCM/X9SCL/X9SCM, BIOS > 2.0b 09/17/2012 > [ 374.710254] ffff88022fc83d90 a08d8f9572a8441c ffff88022fc83d48 > ffffffff815e232c > [ 374.710259] ffff88022fc83d80 ffffffff8105dee1 0000000000000000 > ffff8802209b4000 > [ 374.710264] ffff880220f60e80 0000000000000001 0000000000000001 > ffff88022fc83de8 > [ 374.710268] Call Trace: > [ 374.710271] <IRQ> [<ffffffff815e232c>] dump_stack+0x19/0x1b > [ 374.710285] [<ffffffff8105dee1>] warn_slowpath_common+0x61/0x80 > [ 374.710291] [<ffffffff8105df5c>] warn_slowpath_fmt+0x5c/0x80 > [ 374.710298] [<ffffffff81088681>] ? run_posix_cpu_timers+0x51/0x840 > [ 374.710313] [<ffffffff814f0d20>] dev_watchdog+0x270/0x280 > [ 374.710318] [<ffffffff814f0ab0>] ? dev_graft_qdisc+0x80/0x80 > [ 374.710323] [<ffffffff8106d236>] call_timer_fn+0x36/0x110 > [ 374.710328] [<ffffffff814f0ab0>] ? dev_graft_qdisc+0x80/0x80 > [ 374.710333] [<ffffffff8106f2ff>] run_timer_softirq+0x21f/0x320 > [ 374.710339] [<ffffffff81067047>] __do_softirq+0xf7/0x290 > [ 374.710345] [<ffffffff815f435c>] call_softirq+0x1c/0x30 > [ 374.710352] [<ffffffff81014cf5>] do_softirq+0x55/0x90 > [ 374.710356] [<ffffffff810673e5>] irq_exit+0x115/0x120 > [ 374.710361] [<ffffffff815f4d35>] smp_apic_timer_interrupt+0x45/0x60 > [ 374.710366] [<ffffffff815f369d>] apic_timer_interrupt+0x6d/0x80 > [ 374.710368] <EOI> [<ffffffff814835a2>] ? cpuidle_enter_state+0x52/0xc0 > [ 374.710380] [<ffffffff814836d5>] cpuidle_idle_call+0xc5/0x200 > [ 374.710386] [<ffffffff8101bc7e>] arch_cpu_idle+0xe/0x30 > [ 374.710393] [<ffffffff810b47e5>] cpu_startup_entry+0xf5/0x290 > [ 374.710399] [<ffffffff815d028e>] start_secondary+0x1c4/0x1da > [ 374.710403] ---[ end trace feb9f00b67f36ca1 ]--- > [ 374.710420] e1000e 0000:00:19.0 com: Reset adapter unexpectedly > [ 378.560296] e1000e: com NIC Link is Up 1000 Mbps Full Duplex, Flow > Control: Rx/Tx > > > > And hours later, it repeats (no trace after first time) about 6-11 times > per day every day: > > [12881.408092] e1000e 0000:00:19.0 com: Detected Hardware Unit Hang: > TDH <63> > TDT <7d> > next_to_use <7d> > next_to_clean <60> > buffer_info[next_to_clean]: > time_stamp <100bfef24> > next_to_watch <63> > jiffies <100c012b9> > next_to_watch.status <0> > MAC Status <40080083> > PHY Status <796d> > PHY 1000BASE-T Status <3800> > PHY Extended Status <3000> > PCI Status <10> > [12881.414206] e1000e 0000:00:19.0 com: Reset adapter unexpectedly > [12885.520180] e1000e: com NIC Link is Up 1000 Mbps Full Duplex, Flow > Control: Rx/Tx > > > I scanned through all the machines here to see if any others use e1000e, > and found only one, which has no known issues, but doesn't have as much > network traffic. > > *Here are the details for the only other e1000e machine I have, without > problems:* > > 09:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network > Connection > Subsystem: Super Micro Computer Inc Device 0000 > Kernel driver in use: e1000e > Kernel modules: e1000e > > Linux machine2 3.2.0-55-generic #85-Ubuntu SMP Wed Oct 2 12:29:27 UTC > 2013 x86_64 x86_64 x86_64 GNU/Linux > > Distributor ID: Ubuntu > Description: Ubuntu 12.04.4 LTS > Release: 12.04 > Codename: precise > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > -- -------------------------------------------- Peter Maloney Brockmann Consult Max-Planck-Str. 2 21502 Geesthacht Germany Tel: +49 4152 889 300 Fax: +49 4152 889 333 E-mail: peter.malo...@brockmann-consult.de Internet: http://www.brockmann-consult.de -------------------------------------------- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/