我们最近在商店中部署了英特尔 NUC6i5 设备用于 POS 显示，并且在几台设备上遇到了奇怪的无法解释的冻结现象。
非常奇怪的是，所有设备在启动后 4 小时都冻结了。日志中没有任何内容。没有内核崩溃，也没有kern.log或中的内容syslog。
系统似乎完全冻结（显示播放的视频/应用程序的帧）并且完全没有响应。
我们在 20 多台设备（超过 100 台）上都遇到过同样的问题，这些设备的部件来自不同的批次，并且都在启动后 4 小时准确冻结（但这种情况不可重现，不会每天都冻结）。有些设备正在播放 MPV 视频，而其他设备则运行 Chromium。它们不停地运行，但每天都会在 05h05 重启。
我们有点不知道该注意什么？我们测试了 RAM+DISK，一切似乎都正常。
有什么可以解释这种完全冻结的情况吗？为什么启动 4 小时后出现这种情况？我们可以启用详细模式吗？
谢谢！
更新2017-02-27：
终于找到了正确的踪迹！看来我遇到了这个问题：
https://lkml.org/lkml/2015/6/11/787
但目前还没有任何线索可以找到解决办法。
DHCPREQUEST of 10.34.242.77 on eth0 to 10.32.65.65 port 67 (xid=0x30fdf923)
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<ffffffff810fa7e3>] timecounter_read+0x13/0x60
PGD 0
Oops: 0000 [#1] SMP
Modules linked in: rfcomm ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_multiport xfrm_user xfrm_algo iptable_nat nf_nat_ipv4 br_netfilter bridge stp llc aufs pl2303 usbserial bnep arc4 snd_hda_codec_hdmi snd_soc_skl snd_soc_skl_ipc snd_hda_ext_core snd_soc_sst_ipc snd_hda_codec_realtek snd_soc_sst_dsp snd_hda_codec_generic nls_iso8859_1 snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine dw_dmac_core snd_hda_intel iwlmvm snd_hda_codec snd_hda_core intel_rapl 8250_dw snd_hwdep mac80211 x86_pkg_temp_thermal intel_powerclamp coretemp snd_pcm kvm_intel kvm snd_seq_midi snd_seq_midi_event irqbypass crct10dif_pclmul crc32_pclmul iwlwifi ghash_clmulni_intel snd_rawmidi aesni_intel snd_seq aes_x86_64 lrw gf128mul glue_helper cfg80211 snd_seq_device ablk_helper cryptd snd_timer snd soundcore idma64
virt_dma shpchp ir_lirc_codec ir_xmp_decoder lirc_dev ir_mce_kbd_decoder ir_sharp_decoder intel_lpss_pci ir_sanyo_decoder btusb ir_sony_decoder hci_uart btrtl ir_jvc_decoder ir_rc6_decoder btbcm btqca ir_rc5_decoder btintel ir_nec_decoder bluetooth mei_me rc_rc6_mce ite_cir rc_core intel_lpss_acpi intel_lpss mei acpi_pad mac_hid acpi_als kfifo_buf industrialio ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack iptable_filter ip_tables x_tables parport_pc ppdev sunrpc lp parport autofs4 i915_bpo intel_ips
i2c_algo_bit drm_kms_helper syscopyarea e1000e sysfillrect sysimgblt fb_sys_fops ptp sdhci_pci ahci drm pps_core sdhci libahci video pinctrl_sunrisepoint i2c_hid pinctrl_intel hid fjes
CPU: 3 PID: 15471 Comm: kworker/3:0 Not tainted 4.4.0-64-generic #85-Ubuntu
Hardware name: /NUC6i5SYB, BIOS SYSKLi35.86A.0051.2016.0804.1114 08/04/2016
Workqueue: events e1000e_systim_overflow_work [e1000e]
task: ffff880031f32d00 ti: ffff8800350e8000 task.ti: ffff8800350e8000
RIP: 0010:[<ffffffff810fa7e3>] [<ffffffff810fa7e3>] timecounter_read+0x13/0x60
RSP: 0018:ffff8800350ebdb0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8800353ab7a0 RCX: 0000000000000001
RDX: 0000000000000001 RSI: ffff8800350ebdf8 RDI: 0000000000000000
RBP: ffff8800350ebdb8 R08: ffff88016ed965c0 R09: 0000000000000000
R10: 000000010035ffff R11: 0000000000000001 R12: ffff8800353ab780
R13: ffff8800350ebdf8 R14: 0000000000000246 R15: ffff8800353ab6d0
FS: 0000000000000000(0000) GS:ffff88016ed80000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000002e0a000 CR4: 00000000003406e0
Stack:
ffff8800353ab7d0 ffff8800350ebde8 ffffffffc014d36e ffff8800353ab6d0
ffff88016ed965c0 ffff88016ed9af00 00000000000000c0 ffff8800350ebe18
ffffffffc014d521 ffffffff81837e26 ffff88016ed9af00 00000000a91221c0
Call Trace:
[<ffffffffc014d36e>] e1000e_phc_gettime+0x2e/0x60 [e1000e]
[<ffffffffc014d521>] e1000e_systim_overflow_work+0x31/0xa0 [e1000e]
[<ffffffff81837e26>] ? __schedule+0x3b6/0xa30
[<ffffffff8109a515>] process_one_work+0x165/0x480
[<ffffffff8109a87b>] worker_thread+0x4b/0x4c0
[<ffffffff8109a830>] ? process_one_work+0x480/0x480
[<ffffffff8109a830>] ? process_one_work+0x480/0x480
[<ffffffff810a0ba8>] kthread+0xd8/0xf0
[<ffffffff810a0ad0>] ? kthread_create_on_node+0x1e0/0x1e0
[<ffffffff8183c98f>] ret_from_fork+0x3f/0x70
[<ffffffff810a0ad0>] ? kthread_create_on_node+0x1e0/0x1e0
Code: 00 48 d3 e0 48 83 e8 01 48 89 43 18 5b 41 5c 41 5d 5d c3 0f 1f 44 00 00 0f 1f 44 00 00 55 48 89 e5 53 48 8b 07 48 89 fb 48 89 c7 <ff> 10 48 8b 33 48 89 c2 48 2b 53 08 8b 4e 10 48 23 56 08 48 0f
RIP [<ffffffff810fa7e3>] timecounter_read+0x13/0x60
RSP <ffff8800350ebdb0>
CR2: 0000000000000000
---[ end trace 7d024538180dff79 ]---
BUG: unable to handle kernel paging request at ffffffffffffffd8
IP: [<ffffffff810a1250>] kthread_data+0x10/0x20
PGD 2e0d067 PUD 2e0f067 PMD 0
Oops: 0000 [#2] SMP
Modules linked in: rfcomm ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_multiport xfrm_user xfrm_algo iptable_nat nf_nat_ipv4 br_netfilter bridge stp llc aufs pl2303 usbserial bnep arc4 snd_hda_codec_hdmi snd_soc_skl snd_soc_skl_ipc snd_hda_ext_core snd_soc_sst_ipc snd_hda_codec_realtek snd_soc_sst_dsp snd_hda_codec_generic nls_iso8859_1 snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine dw_dmac_core snd_hda_intel iwlmvm snd_hda_codec snd_hda_core intel_rapl 8250_dw snd_hwdep mac80211 x86_pkg_temp_thermal intel_powerclamp coretemp snd_pcm kvm_intel kvm snd_seq_midi snd_seq_midi_event irqbypass crct10dif_pclmul crc32_pclmul iwlwifi ghash_clmulni_intel snd_rawmidi aesni_intel snd_seq aes_x86_64 lrw gf128mul glue_helper cfg80211 snd_seq_device ablk_helper cryptd snd_timer snd soundcore idma64
virt_dma shpchp ir_lirc_codec ir_xmp_decoder lirc_dev ir_mce_kbd_decoder ir_sharp_decoder intel_lpss_pci ir_sanyo_decoder btusb ir_sony_decoder hci_uart btrtl ir_jvc_decoder ir_rc6_decoder btbcm btqca ir_rc5_decoder btintel ir_nec_decoder bluetooth mei_me rc_rc6_mce ite_cir rc_core intel_lpss_acpi intel_lpss mei acpi_pad mac_hid acpi_als kfifo_buf industrialio ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack iptable_filter ip_tables x_tables parport_pc ppdev sunrpc lp parport autofs4 i915_bpo intel_ips
i2c_algo_bit drm_kms_helper syscopyarea e1000e sysfillrect sysimgblt fb_sys_fops ptp sdhci_pci ahci drm pps_core sdhci libahci video pinctrl_sunrisepoint i2c_hid pinctrl_intel hid fjes
CPU: 3 PID: 15471 Comm: kworker/3:0 Tainted: G D 4.4.0-64-generic #85-Ubuntu
Hardware name: /NUC6i5SYB, BIOS SYSKLi35.86A.0051.2016.0804.1114 08/04/2016
task: ffff880031f32d00 ti: ffff8800350e8000 task.ti: ffff8800350e8000
RIP: 0010:[<ffffffff810a1250>] [<ffffffff810a1250>] kthread_data+0x10/0x20
RSP: 0018:ffff8800350ebaa8 EFLAGS: 00010002
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffffff82109e80
RDX: 0000000000000003 RSI: 0000000000000003 RDI: ffff880031f32d00
RBP: ffff8800350ebaa8 R08: 00000000ffffffff R09: 0000000000000000
R10: ffff880031f32d60 R11: 0000000000005c00 R12: 0000000000000000
R13: 0000000000016dc0 R14: ffff880031f32d00 R15: ffff88016ed96dc0
FS: 0000000000000000(0000) GS:ffff88016ed80000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000028 CR3: 00000001653c0000 CR4: 00000000003406e0
Stack:
ffff8800350ebac0 ffffffff8109b8b1 ffff88016ed96dc0 ffff8800350ebb10
ffffffff818380c0 ffff8800350ebb28 ffffffff00000003 ffff880031f32d00
ffff8800350ec000 ffff880031f333d0 ffff8800350eb6c0 0000000000000046
Call Trace:
[<ffffffff8109b8b1>] wq_worker_sleeping+0x11/0x90
[<ffffffff818380c0>] __schedule+0x650/0xa30
[<ffffffff818384d5>] schedule+0x35/0x80
[<ffffffff81084425>] do_exit+0x775/0xb00
[<ffffffff81031c41>] oops_end+0xa1/0xd0
[<ffffffff8106ad05>] no_context+0x135/0x380
[<ffffffff8106afd0>] __bad_area_nosemaphore+0x80/0x1f0
[<ffffffff8106b153>] bad_area_nosemaphore+0x13/0x20
[<ffffffff8106b417>] __do_page_fault+0xb7/0x400
[<ffffffffc01ecb7b>] ? __i915_wait_request+0xcb/0x660 [i915_bpo]
[<ffffffff8106b782>] do_page_fault+0x22/0x30
[<ffffffff8183e778>] page_fault+0x28/0x30
[<ffffffff810fa7e3>] ? timecounter_read+0x13/0x60
[<ffffffffc014d36e>] e1000e_phc_gettime+0x2e/0x60 [e1000e]
[<ffffffffc014d521>] e1000e_systim_overflow_work+0x31/0xa0 [e1000e]
[<ffffffff81837e26>] ? __schedule+0x3b6/0xa30
[<ffffffff8109a515>] process_one_work+0x165/0x480
[<ffffffff8109a87b>] worker_thread+0x4b/0x4c0
[<ffffffff8109a830>] ? process_one_work+0x480/0x480
[<ffffffff8109a830>] ? process_one_work+0x480/0x480
[<ffffffff810a0ba8>] kthread+0xd8/0xf0
[<ffffffff810a0ad0>] ? kthread_create_on_node+0x1e0/0x1e0
[<ffffffff8183c98f>] ret_from_fork+0x3f/0x70
[<ffffffff810a0ad0>] ? kthread_create_on_node+0x1e0/0x1e0
Code: ff ff ff be 46 02 00 00 48 c7 c7 a0 ac cb 81 e8 c7 01 fe ff e9 a6 fe ff ff 66 90 0f 1f 44 00 00 48 8b 87 18 05 00 00 55 48 89 e5 <48> 8b 40 d8 5d c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00
RIP [<ffffffff810a1250>] kthread_data+0x10/0x20
RSP <ffff8800350ebaa8>
CR2: ffffffffffffffd8
---[ end trace 7d024538180dff7a ]---
Fixing recursive fault but reboot is needed!
以下是 的结束日志kern.log：
Jan 26 05:05:32 player-ccaa NetworkManager[893]: <info> [1485403532.2307] manager: (docker0): new Bridge device (/org/freedesktop/NetworkManager/Devices/3)
Jan 26 05:05:32 player-ccaa NetworkManager[893]: <info> [1485403532.2466] devices added (path: /sys/devices/virtual/net/docker0, iface: docker0)
Jan 26 05:05:32 player-ccaa NetworkManager[893]: <info> [1485403532.2466] device added (path: /sys/devices/virtual/net/docker0, iface: docker0): no ifupdown configuration found.
Jan 26 05:05:32 player-ccaa NetworkManager[893]: <info> [1485403532.3475] device (docker0): state change: unmanaged -> unavailable (reason 'connection-assumed') [10 20 41]
Jan 26 05:05:32 player-ccaa NetworkManager[893]: <info> [1485403532.3490] keyfile: add connection in-memory (ce78eed6-7fa3-4e1b-a835-30fc21b5165a,"docker0")
Jan 26 05:05:32 player-ccaa NetworkManager[893]: <info> [1485403532.3497] device (docker0): state change: unavailable -> disconnected (reason 'connection-assumed') [20 30 41]
Jan 26 05:05:32 player-ccaa NetworkManager[893]: <info> [1485403532.3512] device (docker0): Activation: starting connection 'docker0' (ce78eed6-7fa3-4e1b-a835-30fc21b5165a)
Jan 26 05:05:32 player-ccaa kernel: [ 14.224889] IPv6: ADDRCONF(NETDEV_UP): docker0: link is not ready
Jan 26 05:05:32 player-ccaa NetworkManager[893]: <info> [1485403532.3551] device (docker0): state change: disconnected -> prepare (reason 'none') [30 40 0]
Jan 26 05:05:32 player-ccaa NetworkManager[893]: <info> [1485403532.3669] device (docker0): state change: prepare -> config (reason 'none') [40 50 0]
Jan 26 05:05:32 player-ccaa NetworkManager[893]: <info> [1485403532.3686] device (docker0): state change: config -> ip-config (reason 'none') [50 70 0]
Jan 26 05:05:32 player-ccaa NetworkManager[893]: <info> [1485403532.3760] device (docker0): state change: ip-config -> ip-check (reason 'none') [70 80 0]
Jan 26 05:05:32 player-ccaa kernel: [ 14.253721] [UFW BLOCK] IN=eth0 OUT= MAC=33:33:00:00:00:01:f4:4d:30:65:04:da:86:dd SRC=fe80:0000:0000:0000:382f:9166:a48e:182a DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=818314 PROTO=UDP SPT=8612 DPT=8612 LEN=24
Jan 26 05:05:32 player-ccaa kernel: [ 14.253735] [UFW BLOCK] IN=eth0 OUT= MAC=33:33:00:00:00:01:f4:4d:30:65:04:da:86:dd SRC=fe80:0000:0000:0000:382f:9166:a48e:182a DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=757395 PROTO=UDP SPT=8612 DPT=8610 LEN=24
Jan 26 05:05:32 player-ccaa NetworkManager[893]: <info> [1485403532.3852] device (docker0): state change: ip-check -> secondaries (reason 'none') [80 90 0]
Jan 26 05:05:32 player-ccaa NetworkManager[893]: <info> [1485403532.3865] device (docker0): state change: secondaries -> activated (reason 'none') [90 100 0]
Jan 26 05:05:32 player-ccaa kernel: [ 14.264506] [UFW BLOCK] IN=eth0 OUT= MAC=33:33:00:00:00:01:f4:4d:30:65:04:da:86:dd SRC=fe80:0000:0000:0000:382f:9166:a48e:182a DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=818314 PROTO=UDP SPT=8612 DPT=8612 LEN=24
Jan 26 05:05:32 player-ccaa kernel: [ 14.264518] [UFW BLOCK] IN=eth0 OUT= MAC=33:33:00:00:00:01:f4:4d:30:65:04:da:86:dd SRC=fe80:0000:0000:0000:382f:9166:a48e:182a DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=757395 PROTO=UDP SPT=8612 DPT=8610 LEN=24
Jan 26 05:05:32 player-ccaa NetworkManager[893]: <info> [1485403532.3992] device (docker0): Activation: successful, device activated.
Jan 26 05:05:32 player-ccaa kernel: [ 14.282714] [UFW BLOCK] IN=eth0 OUT= MAC= SRC=fe80:0000:0000:0000:c224:80e3:560c:97d7 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=69955 PROTO=UDP SPT=8612 DPT=8612 LEN=24
Jan 26 05:05:32 player-ccaa kernel: [ 14.282735] [UFW BLOCK] IN=eth0 OUT= MAC= SRC=fe80:0000:0000:0000:c224:80e3:560c:97d7 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=909475 PROTO=UDP SPT=8612 DPT=8610 LEN=24
Jan 26 05:05:32 player-ccaa kernel: [ 14.293332] [UFW BLOCK] IN=eth0 OUT= MAC= SRC=fe80:0000:0000:0000:c224:80e3:560c:97d7 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=69955 PROTO=UDP SPT=8612 DPT=8612 LEN=24
Jan 26 05:05:32 player-ccaa kernel: [ 14.293356] [UFW BLOCK] IN=eth0 OUT= MAC= SRC=fe80:0000:0000:0000:c224:80e3:560c:97d7 DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=64 TC=0 HOPLIMIT=1 FLOWLBL=909475 PROTO=UDP SPT=8612 DPT=8610 LEN=24
Jan 26 05:05:33 player-ccaa NetworkManager[893]: <info> [1485403533.1294] WiFi hardware radio set enabled
Jan 26 05:05:33 player-ccaa NetworkManager[893]: <info> [1485403533.1294] WWAN hardware radio set enabled
Jan 26 05:05:33 player-ccaa kernel: [ 15.037186] nf_conntrack: automatic helper assignment is deprecated and it will be removed soon. Use the iptables CT target to attach helpers instead.
Jan 26 05:05:33 player-ccaa NetworkManager[893]: <info> [1485403533.5487] manager: startup complete
Jan 26 05:05:40 player-ccaa NetworkManager[893]: <info> [1485403540.1485] manager: (tun0): new Tun device (/org/freedesktop/NetworkManager/Devices/4)
Jan 26 05:05:40 player-ccaa NetworkManager[893]: <info> [1485403540.1548] devices added (path: /sys/devices/virtual/net/tun0, iface: tun0)
Jan 26 05:05:40 player-ccaa NetworkManager[893]: <info> [1485403540.1554] device added (path: /sys/devices/virtual/net/tun0, iface: tun0): no ifupdown configuration found.
Jan 26 05:05:40 player-ccaa NetworkManager[893]: <info> [1485403540.1559] device (tun0): state change: unmanaged -> unavailable (reason 'connection-assumed') [10 20 41]
Jan 26 05:05:40 player-ccaa NetworkManager[893]: <info> [1485403540.1576] keyfile: add connection in-memory (4a5b5eae-6b0c-4887-8500-78a2526a94b2,"tun0")
Jan 26 05:05:40 player-ccaa NetworkManager[893]: <info> [1485403540.1585] device (tun0): state change: unavailable -> disconnected (reason 'connection-assumed') [20 30 41]
Jan 26 05:05:40 player-ccaa NetworkManager[893]: <info> [1485403540.1628] device (tun0): Activation: starting connection 'tun0' (4a5b5eae-6b0c-4887-8500-78a2526a94b2)
Jan 26 05:05:40 player-ccaa NetworkManager[893]: <info> [1485403540.1641] device (tun0): state change: disconnected -> prepare (reason 'none') [30 40 0]
Jan 26 05:05:40 player-ccaa NetworkManager[893]: <info> [1485403540.1649] device (tun0): state change: prepare -> config (reason 'none') [40 50 0]
Jan 26 05:05:40 player-ccaa NetworkManager[893]: <info> [1485403540.1657] device (tun0): state change: config -> ip-config (reason 'none') [50 70 0]
Jan 26 05:05:40 player-ccaa NetworkManager[893]: <info> [1485403540.1670] device (tun0): state change: ip-config -> ip-check (reason 'none') [70 80 0]
Jan 26 05:05:40 player-ccaa NetworkManager[893]: <info> [1485403540.1676] device (tun0): state change: ip-check -> secondaries (reason 'none') [80 90 0]
Jan 26 05:05:40 player-ccaa NetworkManager[893]: <info> [1485403540.1682] device (tun0): state change: secondaries -> activated (reason 'none') [90 100 0]
Jan 26 05:05:40 player-ccaa NetworkManager[893]: <info> [1485403540.1757] device (tun0): Activation: successful, device activated.
Jan 26 05:05:48 player-ccaa kernel: [ 30.612550] [UFW BLOCK] IN=eth0 OUT= MAC=f4:4d:30:64:50:ef:c4:72:95:0e:0e:47:08:00 SRC=51.255.59.184 DST=10.34.210.76 LEN=123 TOS=0x18 PREC=0x00 TTL=52 ID=61912 DF PROTO=TCP SPT=443 DPT=60296 WINDOW=32038 RES=0x00 ACK PSH URGP=0
Jan 26 05:06:31 player-ccaa kernel: [ 73.684805] [UFW BLOCK] IN=eth0 OUT= MAC=f4:4d:30:64:50:ef:c4:72:95:0e:0e:47:08:00 SRC=51.255.59.184 DST=10.34.210.76 LEN=123 TOS=0x18 PREC=0x00 TTL=52 ID=61913 DF PROTO=TCP SPT=443 DPT=60296 WINDOW=32038 RES=0x00 ACK PSH URGP=0
Jan 26 05:07:57 player-ccaa kernel: [ 159.829079] [UFW BLOCK] IN=eth0 OUT= MAC=f4:4d:30:64:50:ef:c4:72:95:0e:0e:47:08:00 SRC=51.255.59.184 DST=10.34.210.76 LEN=123 TOS=0x18 PREC=0x00 TTL=52 ID=61914 DF PROTO=TCP SPT=443 DPT=60296 WINDOW=32038 RES=0x00 ACK PSH URGP=0
Jan 26 05:24:46 player-ccaa kernel: [ 1168.341626] snd_hda_intel 0000:00:1f.3: azx_get_response timeout, switching to polling mode: last cmd=0x205f3100
Jan 26 05:55:26 player-ccaa kernel: [ 3008.471662] snd_hda_intel 0000:00:1f.3: IRQ timing workaround is activated for card #0. Suggest a bigger bdl_pos_adj.
Jan 26 06:12:44 player-ccaa kernel: [ 4046.651139] perf interrupt took too long (2538 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
Jan 26 07:06:32 player-ccaa kernel: [ 7274.913169] traps: pool[28796] trap int3 ip:7f9213409a6b sp:7f91f081b6f0 error:0
Jan 26 08:13:38 player-ccaa kernel: [11301.034720] perf interrupt took too long (5025 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
Jan 26 08:44:57 player-ccaa NetworkManager[893]: <info> [1485416697.5313] address 10.34.210.76
Jan 26 08:44:57 player-ccaa NetworkManager[893]: <info> [1485416697.5337] plen 25 (255.255.255.128)
Jan 26 08:44:57 player-ccaa NetworkManager[893]: <info> [1485416697.5338] gateway 10.34.210.1
Jan 26 08:44:57 player-ccaa NetworkManager[893]: <info> [1485416697.5338] server identifier 10.33.85.50
Jan 26 08:44:57 player-ccaa NetworkManager[893]: <info> [1485416697.5338] lease time 28800
Jan 26 08:44:57 player-ccaa NetworkManager[893]: <info> [1485416697.5339] nameserver '10.32.24.93'
Jan 26 08:44:57 player-ccaa NetworkManager[893]: <info> [1485416697.5339] nameserver '10.33.81.251'
Jan 26 08:44:57 player-ccaa NetworkManager[893]: <info> [1485416697.5339] nameserver '10.32.24.94'
Jan 26 08:44:57 player-ccaa NetworkManager[893]: <info> [1485416697.5339] domain name 'vuitton.lvmh'
Jan 26 08:44:57 player-ccaa NetworkManager[893]: <info> [1485416697.5340] wins '10.32.24.93'
Jan 26 08:44:57 player-ccaa NetworkManager[893]: <info> [1485416697.5340] wins '10.33.81.251'
Jan 26 08:44:57 player-ccaa NetworkManager[893]: <info> [1485416697.5340] wins '10.32.24.94'
Jan 26 08:44:57 player-ccaa NetworkManager[893]: <info> [1485416697.5350] dhcp4 (eth0): state changed bound -> bound
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] Initializing cgroup subsys cpuset
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] Initializing cgroup subsys cpu
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] Initializing cgroup subsys cpuacct
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] Linux version 4.4.0-59-generic (buildd@lgw01-11) (gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.4) ) #80-Ubuntu SMP Fri Jan 6 17:47:47 UTC 2017 (Ubuntu 4.4.0-59.80-generic 4.4.35)
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-59-generic.efi.signed root=UUID=1f60f9c9-bbf1-45df-bdc3-9b4da883839e ro quiet splash net.ifnames=0 vt.handoff=7
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] KERNEL supported cpus:
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] Intel GenuineIntel
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] AMD AuthenticAMD
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] Centaur CentaurHauls
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] x86/fpu: xstate_offset[3]: 960, xstate_sizes[3]: 64
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] x86/fpu: xstate_offset[4]: 1024, xstate_sizes[4]: 64
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] x86/fpu: Supporting XSAVE feature 0x01: 'x87 floating point registers'
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] x86/fpu: Supporting XSAVE feature 0x02: 'SSE registers'
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] x86/fpu: Supporting XSAVE feature 0x04: 'AVX registers'
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] x86/fpu: Supporting XSAVE feature 0x08: 'MPX bounds registers'
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] x86/fpu: Supporting XSAVE feature 0x10: 'MPX CSR'
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] x86/fpu: Enabled xstate features 0x1f, context size is 1088 bytes, using 'standard' format.
Feb 15 06:04:36 player-ccaa kernel: [ 0.000000] x86/fpu: Using 'eager' FPU context switches.
结尾syslog：
Jan 26 09:01:11 player-ccaa wpa_supplicant[1098]: wlan0: Failed to initiate sched scan
Jan 26 09:02:14 player-ccaa wpa_supplicant[1098]: wlan0: Failed to initiate sched scan
Jan 26 09:03:18 player-ccaa wpa_supplicant[1098]: wlan0: Failed to initiate sched scan
Jan 26 09:04:21 player-ccaa wpa_supplicant[1098]: wlan0: Failed to initiate sched scan
Jan 26 09:05:23 player-ccaa wpa_supplicant[1098]: wlan0: Failed to initiate sched scan
---
Feb 15 06:04:36 player-ccaa rsyslogd-2222: command 'KLogPermitNonKernelFacility' is currently not permitted - did you already set it via a RainerScript command (v6+ config)? [v8.16.0 try http://www.rsyslog.com/e/2222 ]
Feb 15 06:04:36 player-ccaa rsyslogd: rsyslogd's groupid changed to 108
Feb 15 06:04:36 player-ccaa rsyslogd: rsyslogd's userid changed to 104
Feb 15 06:04:36 player-ccaa rsyslogd-2039: Could not open output pipe '/dev/xconsole':: No such file or directory [v8.16.0 try http://www.rsyslog.com/e/2039 ]
Feb 15 06:04:36 player-ccaa rsyslogd-2007: action 'action 10' suspended, next retry is Wed Feb 15 06:05:06 2017 [v8.16.0 try http://www.rsyslog.com/e/2007 ]
Feb 15 06:04:36 player-ccaa systemd-modules-load[238]: Inserted module 'lp'
Feb 15 06:04:36 player-ccaa systemd-modules-load[238]: Inserted module 'ppdev'
Feb 15 06:04:36 player-ccaa systemd-modules-load[238]: Inserted module 'parport_pc'
Feb 15 06:04:36 player-ccaa loadkeys[225]: Loading /etc/console-setup/cached.kmap.gz
Feb 15 06:04:36 player-ccaa systemd[1]: Started Set console keymap.
Feb 15 06:04:36 player-ccaa systemd[1]: Started Apply Kernel Variables.
Feb 15 06:04:36 player-ccaa systemd[1]: Started Create Static Device Nodes in /dev.
Feb 15 06:04:36 player-ccaa systemd[1]: Starting udev Kernel Device Manager...
Feb 15 06:04:36 player-ccaa ureadahead[217]: ureadahead:/lib/modprobe.d/blacklist_linux_4.4.0-36-generic.conf: No such file or directory
Feb 15 06:04:36 player-ccaa systemd-udevd[291]: Network interface NamePolicy= disabled on kernel command line, ignoring.