We've successfully reproduced the error on a newly built instance. We'll proceed to run the mainline kernel on the same instance.
Worth noting that it took 441529 seconds (5.1 days) since boot for this to manifest in this case. On our previous instance the time to failure was in the order of a hours to days. [441529.300238] ------------[ cut here ]------------ [441529.300288] WARNING: CPU: 1 PID: 10409 at /build/linux-lts-xenial-N0BD4p/linux-lts-xenial-4.4.0/net/ipv6/addrconf_core.c:159 in6_dev_finish_destroy+0x6b/0xb0() [441529.300359] CPU: 1 PID: 10409 Comm: kworker/u4:0 Not tainted 4.4.0-87-generic #110~14.04.1-Ubuntu [441529.300361] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 09/17/2015 [441529.300374] Workqueue: netns cleanup_net [441529.300376] 0000000000000000 ffff880088ddbbb8 ffffffff813de2dc 0000000000000000 [441529.300378] ffffffff81d7aa60 ffff880088ddbbf0 ffffffff8107ea46 ffff880139e5a400 [441529.300380] 0000000000000000 0000000000000006 ffff880088ddbcc0 0000000000000000 [441529.300382] Call Trace: [441529.300398] [<ffffffff813de2dc>] dump_stack+0x63/0x87 [441529.300413] [<ffffffff8107ea46>] warn_slowpath_common+0x86/0xc0 [441529.300415] [<ffffffff8107eb3a>] warn_slowpath_null+0x1a/0x20 [441529.300417] [<ffffffff817e8b9b>] in6_dev_finish_destroy+0x6b/0xb0 [441529.300421] [<ffffffff817be360>] ip6_route_dev_notify+0x110/0x130 [441529.300425] [<ffffffff8109dde9>] notifier_call_chain+0x49/0x70 [441529.300427] [<ffffffff8109df06>] raw_notifier_call_chain+0x16/0x20 [441529.300429] [<ffffffff81701d35>] call_netdevice_notifiers_info+0x35/0x60 [441529.300432] [<ffffffff8170c007>] netdev_run_todo+0x157/0x300 [441529.300436] [<ffffffff81703a4e>] ? rollback_registered_many+0x22e/0x2e0 [441529.300440] [<ffffffff817172fe>] rtnl_unlock+0xe/0x10 [441529.300442] [<ffffffff81704d98>] default_device_exit_batch+0x138/0x150 [441529.300452] [<ffffffff810bf540>] ? __wake_up_sync+0x20/0x20 [441529.300454] [<ffffffff816fd252>] ops_exit_list.isra.4+0x52/0x60 [441529.300456] [<ffffffff816fe223>] cleanup_net+0x1b3/0x280 [441529.300461] [<ffffffff81096d90>] process_one_work+0x150/0x3f0 [441529.300463] [<ffffffff8109750a>] worker_thread+0x11a/0x470 [441529.300471] [<ffffffff81808d99>] ? __schedule+0x359/0x980 [441529.300473] [<ffffffff810973f0>] ? rescuer_thread+0x310/0x310 [441529.300475] [<ffffffff8109cdc6>] kthread+0xd6/0xf0 [441529.300477] [<ffffffff81081875>] ? do_exit+0x655/0xae0 [441529.300479] [<ffffffff8109ccf0>] ? kthread_park+0x60/0x60 [441529.300481] [<ffffffff8180d00f>] ret_from_fork+0x3f/0x70 [441529.300483] [<ffffffff8109ccf0>] ? kthread_park+0x60/0x60 [441529.300484] ---[ end trace 5e09761f8674a0af ]--- [441529.300485] ------------[ cut here ]------------ [441529.300487] WARNING: CPU: 1 PID: 10409 at /build/linux-lts-xenial-N0BD4p/linux-lts-xenial-4.4.0/net/ipv6/addrconf_core.c:160 in6_dev_finish_destroy+0xa4/0xb0() [441529.300510] CPU: 1 PID: 10409 Comm: kworker/u4:0 Tainted: G W 4.4.0-87-generic #110~14.04.1-Ubuntu [441529.300511] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 09/17/2015 [441529.300513] Workqueue: netns cleanup_net [441529.300514] 0000000000000000 ffff880088ddbbb8 ffffffff813de2dc 0000000000000000 [441529.300515] ffffffff81d7aa60 ffff880088ddbbf0 ffffffff8107ea46 ffff880139e5a400 [441529.300517] 0000000000000000 0000000000000006 ffff880088ddbcc0 0000000000000000 [441529.300518] Call Trace: [441529.300520] [<ffffffff813de2dc>] dump_stack+0x63/0x87 [441529.300522] [<ffffffff8107ea46>] warn_slowpath_common+0x86/0xc0 [441529.300524] [<ffffffff8107eb3a>] warn_slowpath_null+0x1a/0x20 [441529.300526] [<ffffffff817e8bd4>] in6_dev_finish_destroy+0xa4/0xb0 [441529.300528] [<ffffffff817be360>] ip6_route_dev_notify+0x110/0x130 [441529.300529] [<ffffffff8109dde9>] notifier_call_chain+0x49/0x70 [441529.300531] [<ffffffff8109df06>] raw_notifier_call_chain+0x16/0x20 [441529.300533] [<ffffffff81701d35>] call_netdevice_notifiers_info+0x35/0x60 [441529.300535] [<ffffffff8170c007>] netdev_run_todo+0x157/0x300 [441529.300538] [<ffffffff81703a4e>] ? rollback_registered_many+0x22e/0x2e0 [441529.300540] [<ffffffff817172fe>] rtnl_unlock+0xe/0x10 [441529.300543] [<ffffffff81704d98>] default_device_exit_batch+0x138/0x150 [441529.300546] [<ffffffff810bf540>] ? __wake_up_sync+0x20/0x20 [441529.300549] [<ffffffff816fd252>] ops_exit_list.isra.4+0x52/0x60 [441529.300552] [<ffffffff816fe223>] cleanup_net+0x1b3/0x280 [441529.300555] [<ffffffff81096d90>] process_one_work+0x150/0x3f0 [441529.300558] [<ffffffff8109750a>] worker_thread+0x11a/0x470 [441529.300561] [<ffffffff81808d99>] ? __schedule+0x359/0x980 [441529.300563] [<ffffffff810973f0>] ? rescuer_thread+0x310/0x310 [441529.300564] [<ffffffff8109cdc6>] kthread+0xd6/0xf0 [441529.300566] [<ffffffff81081875>] ? do_exit+0x655/0xae0 [441529.300568] [<ffffffff8109ccf0>] ? kthread_park+0x60/0x60 [441529.300570] [<ffffffff8180d00f>] ret_from_fork+0x3f/0x70 [441529.300571] [<ffffffff8109ccf0>] ? kthread_park+0x60/0x60 [441529.300573] ---[ end trace 5e09761f8674a0b0 ]--- [441529.300775] PGD b97cd067 PUD b97ad067 PMD 0 [441529.300877] Oops: 0000 [#1] SMP [441529.301242] CPU: 1 PID: 10409 Comm: kworker/u4:0 Tainted: G W 4.4.0-87-generic #110~14.04.1-Ubuntu [441529.301281] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 09/17/2015 [441529.302097] Workqueue: netns cleanup_net [441529.302114] task: ffff880057de0e00 ti: ffff880088dd8000 task.ti: ffff880088dd8000 [441529.302143] RIP: 0010:[<ffffffff817e8b5d>] [<ffffffff817e8b5d>] in6_dev_finish_destroy+0x2d/0xb0 [441529.328032] RSP: 0018:ffff880088ddbc10 EFLAGS: 00010246 [441529.328064] RAX: 0000000000000024 RBX: ffff880139e5a400 RCX: 0000000000000006 [441529.328092] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009 [441529.328120] RBP: ffff880088ddbc20 R08: 000000002d2d2d5d R09: 3520656361727420 [441529.328147] R10: 3866313637393065 R11: 000000000003183f R12: 0000000000000000 [441529.328175] R13: 0000000000000006 R14: ffff880088ddbcc0 R15: 0000000000000000 [441529.328206] FS: 0000000000000000(0000) GS:ffff88013fd00000(0000) knlGS:0000000000000000 [441529.328237] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [441529.328260] CR2: 0000000000000448 CR3: 00000000b9743000 CR4: 00000000000406e0 [441529.328351] Stack: [441529.328363] ffff8800b0349880 0000000000000000 ffff880088ddbc38 ffffffff817be360 [441529.328397] 00000000ffffffed ffff880088ddbc70 ffffffff8109dde9 ffff880088ddbcc0 [441529.328429] 0000000000000006 ffff88002397d000 0000000106932e35 00000000000000fa [441529.329355] Call Trace: [441529.330187] [<ffffffff817be360>] ip6_route_dev_notify+0x110/0x130 [441529.331043] [<ffffffff8109dde9>] notifier_call_chain+0x49/0x70 [441529.331927] [<ffffffff8109df06>] raw_notifier_call_chain+0x16/0x20 [441529.332740] [<ffffffff81701d35>] call_netdevice_notifiers_info+0x35/0x60 [441529.333546] [<ffffffff8170c007>] netdev_run_todo+0x157/0x300 [441529.334360] [<ffffffff81703a4e>] ? rollback_registered_many+0x22e/0x2e0 [441529.335187] [<ffffffff817172fe>] rtnl_unlock+0xe/0x10 [441529.335981] [<ffffffff81704d98>] default_device_exit_batch+0x138/0x150 [441529.336771] [<ffffffff810bf540>] ? __wake_up_sync+0x20/0x20 [441529.337534] [<ffffffff816fd252>] ops_exit_list.isra.4+0x52/0x60 [441529.338296] [<ffffffff816fe223>] cleanup_net+0x1b3/0x280 [441529.339013] [<ffffffff81096d90>] process_one_work+0x150/0x3f0 [441529.339750] [<ffffffff8109750a>] worker_thread+0x11a/0x470 [441529.340448] [<ffffffff81808d99>] ? __schedule+0x359/0x980 [441529.341116] [<ffffffff810973f0>] ? rescuer_thread+0x310/0x310 [441529.341820] [<ffffffff8109cdc6>] kthread+0xd6/0xf0 [441529.342471] [<ffffffff81081875>] ? do_exit+0x655/0xae0 [441529.343102] [<ffffffff8109ccf0>] ? kthread_park+0x60/0x60 [441529.343696] [<ffffffff8180d00f>] ret_from_fork+0x3f/0x70 [441529.344306] [<ffffffff8109ccf0>] ? kthread_park+0x60/0x60 [441529.344890] Code: 66 66 90 55 48 8d 47 08 48 89 e5 41 54 53 48 39 47 08 48 89 fb 4c 8b 27 75 3e 48 83 7b 18 00 75 70 48 83 bb b8 02 00 00 00 75 53 <49> 8b 84 24 48 04 00 00 65 ff 08 8b 83 58 01 00 00 85 c0 74 2b [441529.347349] RSP <ffff880088ddbc10> [441529.347956] CR2: 0000000000000448 [441529.349682] ---[ end trace 5e09761f8674a0b1 ]--- -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1702910 Title: System freeze after in6_dev_finish_destroy errors Status in linux package in Ubuntu: Incomplete Bug description: After the upgrade to the `4.4.0-83-generic #106~14.04.1-Ubuntu` kernel we are seeing system hangs with the following logs. Prior to this upgrade there were no crashes or kernel traces of this sort. We have ruled out physical hardware issues by moving the VM to another physical host. In the logs there's reference to docker instances on the host. This results in veth devices being brought up and torn down frequently, which is likely related. As a possible workaround we have disabled IPv6 for now. ``` kernel: [337352.274907] vethf317e0d: renamed from eth0 kernel: [337352.386446] docker0: port 1(veth160ed4a) entered disabled state kernel: [337352.393444] docker0: port 1(veth160ed4a) entered disabled state kernel: [337352.395408] device veth160ed4a left promiscuous mode kernel: [337352.395417] docker0: port 1(veth160ed4a) entered disabled state kernel: [337359.301576] vethee2599d: renamed from eth0 kernel: [337359.339582] docker0: port 2(veth3100aab) entered disabled state kernel: [337359.343059] docker0: port 2(veth3100aab) entered disabled state kernel: [337359.344987] device veth3100aab left promiscuous mode kernel: [337359.344997] docker0: port 2(veth3100aab) entered disabled state kernel: [337475.398358] ------------[ cut here ]------------ kernel: [337475.398370] WARNING: CPU: 3 PID: 23671 at /build/linux-lts-xenial-ep3zLI/linux-lts-xenial-4.4.0/net/ipv6/addrconf_core.c:159 in6_dev_f kernel: [337475.398372] Modules linked in: btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c veth ip6table_filter ip6_tab comment ipt_MASQUERADE nf_nat_masquerade_ipv4 xfrm_user xfrm_algo iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_fil filter bridge stp llc aufs tcp_diag inet_diag coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel ppdev aes_x86_64 lrw gf128mul input_leds serio_raw drm_kms_helper parport_pc drm lp fb_sys_fops syscopyarea sysfillrect sysimgblt vmw_vmci parport shpchp 8250_fintek i2c_piix4 kernel: [337475.398416] CPU: 3 PID: 23671 Comm: kworker/u8:0 Not tainted 4.4.0-83-generic #106~14.04.1-Ubuntu kernel: [337475.398418] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 09/17/2015 kernel: [337475.398423] Workqueue: netns cleanup_net kernel: [337475.398424] 0000000000000000 ffff8801b197fbb8 ffffffff813ddefc 0000000000000000 kernel: [337475.398427] ffffffff81d7aa10 ffff8801b197fbf0 ffffffff8107ea36 ffff88016f97d400 kernel: [337475.398428] ffff88016f97e800 0000000000000006 ffff8801b197fcc0 0000000000000000 kernel: [337475.398430] Call Trace: kernel: [337475.398435] [<ffffffff813ddefc>] dump_stack+0x63/0x87 kernel: [337475.398440] [<ffffffff8107ea36>] warn_slowpath_common+0x86/0xc0 kernel: [337475.398442] [<ffffffff8107eb2a>] warn_slowpath_null+0x1a/0x20 kernel: [337475.398444] [<ffffffff817e886b>] in6_dev_finish_destroy+0x6b/0xb0 kernel: [337475.398447] [<ffffffff817be120>] ip6_route_dev_notify+0x110/0x130 kernel: [337475.398450] [<ffffffff8109dd89>] notifier_call_chain+0x49/0x70 kernel: [337475.398452] [<ffffffff8109dea6>] raw_notifier_call_chain+0x16/0x20 kernel: [337475.398455] [<ffffffff81701d25>] call_netdevice_notifiers_info+0x35/0x60 kernel: [337475.398458] [<ffffffff8170c017>] netdev_run_todo+0x157/0x300 kernel: [337475.398461] [<ffffffff81703a3e>] ? rollback_registered_many+0x22e/0x2e0 kernel: [337475.398463] [<ffffffff817172be>] rtnl_unlock+0xe/0x10 kernel: [337475.398464] [<ffffffff81704d88>] default_device_exit_batch+0x138/0x150 kernel: [337475.398468] [<ffffffff810bf4e0>] ? __wake_up_sync+0x20/0x20 kernel: [337475.398470] [<ffffffff816fd242>] ops_exit_list.isra.4+0x52/0x60 kernel: [337475.398472] [<ffffffff816fe213>] cleanup_net+0x1b3/0x280 kernel: [337475.398476] [<ffffffff81096d30>] process_one_work+0x150/0x3f0 kernel: [337475.398478] [<ffffffff810974aa>] worker_thread+0x11a/0x470 kernel: [337475.398481] [<ffffffff818089c9>] ? __schedule+0x359/0x980 kernel: [337475.398483] [<ffffffff81097390>] ? rescuer_thread+0x310/0x310 kernel: [337475.398484] [<ffffffff8109cd66>] kthread+0xd6/0xf0 kernel: [337475.398486] [<ffffffff8109cc90>] ? kthread_park+0x60/0x60 kernel: [337475.398488] [<ffffffff8180cc0f>] ret_from_fork+0x3f/0x70 kernel: [337475.398490] [<ffffffff8109cc90>] ? kthread_park+0x60/0x60 kernel: [337475.398491] ---[ end trace 6d63274dc9a3dbec ]--- kernel: [337475.398492] ------------[ cut here ]------------ ``` ProblemType: Bug ApportVersion: 2.14.1-0ubuntu3.24 Architecture: amd64 Date: Fri Jul 7 13:59:36 2017 Dependencies: adduser 3.113+nmu3ubuntu3 apt-utils 1.0.1ubuntu2.17 base-passwd 3.5.33 busybox-initramfs 1:1.21.0-1ubuntu1 coreutils 8.21-1ubuntu5.4 cpio 2.11+dfsg-1ubuntu1.2 dbus 1.6.18-0ubuntu4.5 debconf 1.5.51ubuntu2 debconf-i18n 1.5.51ubuntu2 debianutils 4.4 dmsetup 2:1.02.77-6ubuntu2 dpkg 1.17.5ubuntu5.7 e2fslibs 1.42.9-3ubuntu1.3 e2fsprogs 1.42.9-3ubuntu1.3 findutils 4.4.2-7 gcc-4.8-base 4.8.4-2ubuntu1~14.04.3 gcc-4.9-base 4.9.3-0ubuntu4 gettext-base 0.18.3.1-1ubuntu3 grub-common 2.02~beta2-9ubuntu1.12 grub-gfxpayload-lists 0.6 grub-pc 2.02~beta2-9ubuntu1.12 grub-pc-bin 2.02~beta2-9ubuntu1.12 grub2-common 2.02~beta2-9ubuntu1.12 ifupdown 0.7.47.2ubuntu4.4 initramfs-tools 0.103ubuntu4.7 initramfs-tools-bin 0.103ubuntu4.7 initscripts 2.88dsf-41ubuntu6.3 insserv 1.14.0-5ubuntu2 iproute2 3.12.0-2ubuntu1 isc-dhcp-client 4.2.4-7ubuntu12.10 isc-dhcp-common 4.2.4-7ubuntu12.10 klibc-utils 2.0.3-0ubuntu1.14.04.2 kmod 15-0ubuntu6 libacl1 2.2.52-1 libapparmor1 2.10.95-0ubuntu2.6~14.04.1 libapt-inst1.5 1.0.1ubuntu2.17 libapt-pkg4.12 1.0.1ubuntu2.17 libasprintf0c2 0.18.3.1-1ubuntu3 libattr1 1:2.4.47-1ubuntu1 libaudit-common 1:2.3.2-2ubuntu1 libaudit1 1:2.3.2-2ubuntu1 libblkid1 2.20.1-5.1ubuntu20.9 libbz2-1.0 1.0.6-5 libc6 2.19-0ubuntu6.13 libcap2 1:2.24-0ubuntu2 libcgmanager0 0.24-0ubuntu7.5 libcomerr2 1.42.9-3ubuntu1.3 libdb5.3 5.3.28-3ubuntu3 libdbus-1-3 1.6.18-0ubuntu4.5 libdebconfclient0 0.187ubuntu1 libdevmapper1.02.1 2:1.02.77-6ubuntu2 libdrm2 2.4.67-1ubuntu0.14.04.1 libexpat1 2.1.0-4ubuntu1.3 libffi6 3.1~rc1+r3.0.13-12ubuntu0.1 libfreetype6 2.5.2-1ubuntu2.8 libfuse2 2.9.2-4ubuntu4.14.04.1 libgcc1 1:4.9.3-0ubuntu4 libglib2.0-0 2.40.2-0ubuntu1 libglib2.0-data 2.40.2-0ubuntu1 libgpm2 1.20.4-6.1 libjson-c2 0.11-3ubuntu1.2 libjson0 0.11-3ubuntu1.2 libklibc 2.0.3-0ubuntu1.14.04.2 libkmod2 15-0ubuntu6 liblocale-gettext-perl 1.05-7build3 liblzma5 5.1.1alpha+20120614-2ubuntu2 libmount1 2.20.1-5.1ubuntu20.9 libncurses5 5.9+20140118-1ubuntu1 libncursesw5 5.9+20140118-1ubuntu1 libnih-dbus1 1.0.3-4ubuntu25 libnih1 1.0.3-4ubuntu25 libpam-modules 1.1.8-1ubuntu2.2 libpam-modules-bin 1.1.8-1ubuntu2.2 libpam-runtime 1.1.8-1ubuntu2.2 libpam-systemd 204-5ubuntu20.24 libpam0g 1.1.8-1ubuntu2.2 libpcre3 1:8.31-2ubuntu2.3 libplymouth2 0.8.8-0ubuntu17.1 libpng12-0 1.2.50-1ubuntu2.14.04.2 libprocps3 1:3.3.9-1ubuntu2.2 libselinux1 2.2.2-1ubuntu0.1 libsemanage-common 2.2-1 libsemanage1 2.2-1 libsepol1 2.2-1ubuntu0.1 libslang2 2.2.4-15ubuntu1 libss2 1.42.9-3ubuntu1.3 libstdc++6 4.8.4-2ubuntu1~14.04.3 libsystemd-daemon0 204-5ubuntu20.24 libsystemd-login0 204-5ubuntu20.24 libtext-charwidth-perl 0.04-7build3 libtext-iconv-perl 1.7-5build2 libtext-wrapi18n-perl 0.06-7 libtinfo5 5.9+20140118-1ubuntu1 libudev1 204-5ubuntu20.24 libustr-1.0-1 1.0.4-3ubuntu2 libuuid1 2.20.1-5.1ubuntu20.9 libxml2 2.9.1+dfsg1-3ubuntu4.9 libxtables10 1.4.21-1ubuntu1 lsb-base 4.1+Debian11ubuntu6.2 makedev 2.3.1-93ubuntu2~ubuntu14.04.1 module-init-tools 15-0ubuntu6 mount 2.20.1-5.1ubuntu20.9 mountall 2.53 multiarch-support 2.19-0ubuntu6.13 netbase 5.2 os-prober 1.63ubuntu1.1 passwd 1:4.1.5.1-1ubuntu9.5 perl-base 5.18.2-2ubuntu1.1 plymouth 0.8.8-0ubuntu17.1 procps 1:3.3.9-1ubuntu2.2 psmisc 22.20-1ubuntu2 sed 4.2.2-4ubuntu1 sensible-utils 0.0.9 sgml-base 1.26+nmu4ubuntu1 shared-mime-info 1.2-0ubuntu3 systemd-services 204-5ubuntu20.24 systemd-shim 6-2bzr1 sysv-rc 2.88dsf-41ubuntu6.3 sysvinit-utils 2.88dsf-41ubuntu6.3 tar 1.27.1-1ubuntu0.1 tzdata 2016j-0ubuntu0.14.04 ucf 3.0027+nmu1 udev 204-5ubuntu20.24 upstart 1.12.1-0ubuntu4.2 util-linux 2.20.1-5.1ubuntu20.9 xml-core 0.13+nmu2 zlib1g 1:1.2.8.dfsg-1ubuntu1 DistroRelease: Ubuntu 14.04 InstallationDate: Installed on 2015-08-20 (686 days ago) InstallationMedia: Ubuntu-Server 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) Package: linux-image-4.4.0-83-generic 4.4.0-83.106~14.04.1 PackageArchitecture: amd64 ProcCpuinfoMinimal: processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 45 model name : Intel(R) Xeon(R) CPU E5-2680 0 @ 2.70GHz stepping : 2 microcode : 0x710 cpu MHz : 2700.000 cache size : 20480 KB physical id : 6 siblings : 1 core id : 0 cpu cores : 1 apicid : 6 initial apicid : 6 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc arch_perfmon nopl xtopology tsc_reliable nonstop_tsc aperfmperf pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 x2apic popcnt aes xsave avx hypervisor lahf_lm epb dtherm ida arat pln pts bugs : bogomips : 5400.00 clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ProcEnviron: LANGUAGE=en_GB: LC_CTYPE=C TERM=screen PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/zsh ProcVersionSignature: Ubuntu 4.4.0-83.106~14.04.1-generic 4.4.70 SourcePackage: linux-lts-xenial Tags: trusty Uname: Linux 4.4.0-83-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1702910/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
