Sophos UTM stops responding. I unable to access the internet or ping the internal nic (eth0). The only solution I've found so far s to reboot my server. (Dell Power Edge T20). See the logs in description:

Question

Kernal Messages
2016:08:22-08:24:20 sophos kernel: [335601.176531] e1000e 0000:00:19.0 eth0: Reset adapter unexpectedly
2016:08:22-08:24:24 sophos kernel: [335605.192590] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
2016:08:22-08:28:47 sophos kernel: [ 56.275642] hwinfo: vm86 mode not supported on 64 bit kernel
2016:08:22-09:07:02 sophos kernel: [ 2349.899413] e1000e 0000:00:19.0 eth0: Detected Hardware Unit Hang:
2016:08:22-09:07:02 sophos kernel: [ 2349.899413] TDH <d7>
2016:08:22-09:07:02 sophos kernel: [ 2349.899413] TDT 
2016:08:22-09:07:02 sophos kernel: [ 2349.899413] next_to_use 
2016:08:22-09:07:02sophos kernel: [ 2349.899413] next_to_clean <d6>
2016:08:22-09:07:02 sophos kernel: [ 2349.899413] buffer_info[next_to_clean]:
2016:08:22-09:07:02 sophos kernel: [ 2349.899413] time_stamp <10007d05d>
2016:08:22-09:07:02 sophos kernel: [ 2349.899413] next_to_watch <d8>
2016:08:22-09:07:02 sophos kernel: [ 2349.899413] jiffies <10007d2c1>
2016:08:22-09:07:02 sophos kernel: [ 2349.899413] next_to_watch.status <0>
2016:08:22-09:07:02 sophos kernel: [ 2349.899413] MAC Status <40080083>
2016:08:22-09:07:02 sophos kernel: [ 2349.899413] PHY Status <796d>
2016:08:22-09:07:02 sophos kernel: [ 2349.899413] PHY 1000BASE-T Status <3800>
2016:08:22-09:07:02 sophos kernel: [ 2349.899413] PHY Extended Status <3000>
2016:08:22-09:07:02 sophos kernel: [ 2349.899413] PCI Status <10>
2016:08:22-09:07:04 sophos kernel: [ 2351.898661] e1000e 0000:00:19.0 eth0: Detected Hardware Unit Hang:
2016:08:22-09:07:04 sophos kernel: [ 2351.898661] TDH <d7>
2016:08:22-09:07:04 sophos kernel: [ 2351.898661] TDT 
2016:08:22-09:07:04 sophos kernel: [ 2351.898661] next_to_use 
2016:08:22-09:07:04 sophos kernel: [ 2351.898661] next_to_clean <d6>
2016:08:22-09:07:04 sophos kernel: [ 2351.898661] buffer_info[next_to_clean]:
2016:08:22-09:07:04 sophos kernel: [ 2351.898661] time_stamp <10007d05d>
2016:08:22-09:07:04 sophos kernel: [ 2351.898661] next_to_watch <d8>
2016:08:22-09:07:04 sophos kernel: [ 2351.898661] jiffies <10007d4b5>
2016:08:22-09:07:04 sophos kernel: [ 2351.898661] next_to_watch.status <0>
2016:08:22-09:07:04 sophos kernel: [ 2351.898661] MAC Status <40080083>
2016:08:22-09:07:04 sophos kernel: [ 2351.898661] PHY Status <796d>
2016:08:22-09:07:04 sophos kernel: [ 2351.898661] PHY 1000BASE-T Status <3800>
2016:08:22-09:07:04 sophos kernel: [ 2351.898661] PHY Extended Status <3000>
2016:08:22-09:07:04 sophos kernel: [ 2351.898661] PCI Status <10>
2016:08:22-09:07:06 sophos kernel: [ 2353.897909] e1000e 0000:00:19.0 eth0: Detected Hardware Unit Hang:
2016:08:22-09:07:06 sophos kernel: [ 2353.897909] TDH <d7>
2016:08:22-09:07:06 sophos kernel: [ 2353.897909] TDT 
2016:08:22-09:07:06 sophos kernel: [ 2353.897909] next_to_use 
2016:08:22-09:07:06 sophos kernel: [ 2353.897909] next_to_clean <d6>
2016:08:22-09:07:06 sophos kernel: [ 2353.897909] buffer_info[next_to_clean]:
2016:08:22-09:07:06 sophos kernel: [ 2353.897909] time_stamp <10007d05d>
2016:08:22-09:07:06 sophos kernel: [ 2353.897909] next_to_watch <d8>
2016:08:22-09:07:06 sophos kernel: [ 2353.897909] jiffies <10007d6a9>
2016:08:22-09:07:06 sophos kernel: [ 2353.897909] next_to_watch.status <0>
2016:08:22-09:07:06 sophos kernel: [ 2353.897909] MAC Status <40080083>
2016:08:22-09:07:06 sophos kernel: [ 2353.897909] PHY Status <796d>
2016:08:22-09:07:06 sophos kernel: [ 2353.897909] PHY 1000BASE-T Status <3800>
2016:08:22-09:07:06 sophos kernel: [ 2353.897909] PHY Extended Status <3000>
2016:08:22-09:07:06 sophos kernel: [ 2353.897909] PCI Status <10>
2016:08:22-09:07:06 sophos kernel: [ 2353.909563] ------------[ cut here ]------------
2016:08:22-09:07:06 sophos kernel: [ 2353.909569] WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:264 dev_watchdog+0xe6/0x181()
2016:08:22-09:07:06 sophos kernel: [ 2353.909571] NETDEV WATCHDOG: eth0 (e1000e): transmit queue 0 timed out
2016:08:22-09:07:06 tcgsophos kernel: [ 2353.909572] Modules linked in: sr_mod cdrom ipt_MASQUERADE xt_nat ip_set_hash_net xt_hashlimit xt_connlabel xt_TPROXY xt_socket xt_NFQUEUE xt_connmark xt_limit xt_mark xt_set xt_multiport xt_psd(O) xt_addrtype xt_tcpudp xt_policy nf_nat_pptp nf_nat_proto_gre nf_nat_irc nf_nat_ftp nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_irc nf_conntrack_ftp ip_set_hash_ip nfnetlink_queue ebt_arp bridge stp llc ebtable_filter ebtables redv2_netlink(O) af_packet ip6table_ips ip6table_mangle ip6table_nat nf_nat_ipv6 iptable_ips iptable_mangle iptable_nat nf_nat_ipv4 xt_NFLOG xt_condition(O) xt_logmark xt_confirmed xt_owner ip6t_REJECT ipt_REJECT xt_state ip_set red2(O) ip_scheduler red nfnetlink_log nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6table_raw nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack iptable_filter iptable_raw xt_CT nf_conntrack_dns nf_nat nf_conntrack_netlink nfnetlink nf_conntrack ip6_tables ip_tables x_tables ipv6 loop e1000e(O) ptp i2c_i801 rtc_cmos pps_core evdev r8169 pcspkr mii sg button thermal sd_mod processor thermal_sys xhci_hcd hwmon edd ahci libahci libata scsi_mod hid_generic usbhid ehci_pci ehci_hcd
2016:08:22-09:07:06 sophos kernel: [ 2353.909615] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G O 3.12.48-0.233766410.gba768e5.rb6-smp64 #1
2016:08:22-09:07:06 sophos kernel: [ 2353.909616] Hardware name: Dell Inc. PowerEdge T20/0VD5HY, BIOS A06 01/27/2015

System Messages:
2016:08:22-04:22:41 tcgsophos ntpd[19884]: Listen normally on 22 eth0 192.168.1.###:123
2016:08:22-04:22:41 tcgsophos ntpd[19884]: new interface(s) found: waking up resolver
2016:08:22-04:22:51 tcgsophos ntpd[19884]: Deleting interface #22 eth0, 192.168.1.###:123, interface stats: received=0, sent=0, dropped=0, active_time=10 secs
2016:08:22-04:22:55 tcgsophos ntpd[19884]: Listen normally on 23 eth0 192.168.1.###:123
2016:08:22-04:22:55 tcgsophos ntpd[19884]: new interface(s) found: waking up resolver
2016:08:22-04:23:05 tcgsophos ntpd[19884]: Deleting interface #23 eth0, 192.168.1.###123, interface stats: received=0, sent=0, dropped=0, active_time=10 secs
2016:08:22-04:23:09 tcgsophos ntpd[19884]: Listen normally on 24 eth0 192.168.1.###:123
2016:08:22-04:23:09 tcgsophos ntpd[19884]: new interface(s) found: waking up resolver
2016:08:22-04:25:01 tcgsophos /usr/sbin/cron[20645]: (root) CMD ( /usr/local/bin/reporter/system-reporter.pl)
2016:08:22-04:30:01 tcgsophos /usr/sbin/cron[20775]: (root) CMD ( /usr/local/bin/rpmdb_backup )
2016:08:22-04:30:01 tcgsophos /usr/sbin/cron[20781]: (root) CMD (/var/mdw/scripts/pmx-blocklist-update)
2016:08:22-04:30:01 tcgsophos /usr/sbin/cron[20783]: (root) CMD ( /usr/local/bin/reporter/system-reporter.pl)
2016:08:22-04:31:01 tcgsophos /usr/sbin/cron[20845]: (root) CMD (/sbin/audld.plx --trigger)
2016:08:22-04:31:09 tcgsophos ntpd[19884]: Deleting interface #24 eth0, 192.168.1.###123, interface stats: received=0, sent=0, dropped=0, active_time=480 secs

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sachingurung · Answer

Hi Chris, 
 2016:08:22-09:07:06 sophos kernel: [ 2353.897909] e1000e 0000:00:19.0 eth0: Detected Hardware Unit Hang: 
 The line states issues with the hardware or the NIC. I think the issue is on the hardware side. You can find a possible solution on other forums, R&D on "eth0: Detected Hardware Unit Hang". 
 Thanks