FWIW, kernel trace happens with the kernel in: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1753662/comments/77
But I will let it running anyway since I'm not sure if it affects to the testing or not. ==== [ 5.999557] rtc_cmos 00:00: setting system clock to 2018-04-11 15:52:23 UTC (1523461943) [ 5.999637] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found [ 5.999637] EDD information not available. [ 6.856436] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x229834d6ac9, max_idle_ns: 440795285103 ns [ 6.872996] Freeing unused kernel memory: 1844K (ffffffff81f71000 - ffffffff8213e000) [ 6.885727] Write protecting the kernel read-only data: 14336k [ 6.897566] Freeing unused kernel memory: 1964K (ffff880001815000 - ffff880001a00000) [ 6.911315] Freeing unused kernel memory: 272K (ffff880001dbc000 - ffff880001e00000) [ 6.924438] ------------[ cut here ]------------ [ 6.934158] WARNING: CPU: 16 PID: 1 at /home/jsalisbury/bugs/lp1753662/v4.4/linux/arch/x86/mm/dump_pagetables.c:225 note_page+0x649/0x840() [ 6.958330] x86/mm: Found insecure W+X mapping at address ffff880000010000/0xffff880000010000 [ 6.973431] Modules linked in: [ 6.982498] CPU: 16 PID: 1 Comm: swapper/0 Not tainted 4.4.0-040400-generic #201803261439 [ 6.997629] Hardware name: Dell Inc. PowerEdge R730/072T6D, BIOS 2.5.5 08/16/2017 [ 7.012149] 0000000000000000 000000009d064fa9 ffff883f6576fd48 ffffffff813da8d8 [ 7.026822] ffff883f6576fd90 ffff883f6576fd80 ffffffff8107ec52 ffff883f6576fe90 [ 7.041667] 8000000000000163 0000000000000004 0000000000000000 0000000000000000 [ 7.056684] Call Trace: [ 7.066183] [<ffffffff813da8d8>] dump_stack+0x44/0x5c [ 7.078824] [<ffffffff8107ec52>] warn_slowpath_common+0x82/0xc0 [ 7.092586] [<ffffffff8107ecec>] warn_slowpath_fmt+0x5c/0x80 [ 7.106139] [<ffffffff81070a09>] note_page+0x649/0x840 [ 7.119215] [<ffffffff81070ef9>] ptdump_walk_pgd_level_core+0x2f9/0x430 [ 7.134087] [<ffffffff81071067>] ptdump_walk_pgd_level_checkwx+0x17/0x20 [ 7.149121] [<ffffffff81066e2c>] mark_rodata_ro+0xec/0x100 [ 7.162852] [<ffffffff81801b60>] ? rest_init+0x80/0x80 [ 7.176273] [<ffffffff81801b7d>] kernel_init+0x1d/0xe0 [ 7.189752] [<ffffffff8180e18f>] ret_from_fork+0x3f/0x70 [ 7.203505] [<ffffffff81801b60>] ? rest_init+0x80/0x80 [ 7.217134] ---[ end trace 43f75b6421b8d01c ]--- [ 7.235677] x86/mm: Checked W+X mappings: FAILED, 235610 W+X pages found. -- 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/1753662 Title: [i40e] LACP bonding start up race conditions Status in linux package in Ubuntu: Triaged Status in linux source package in Xenial: Triaged Bug description: When provisioning Ubuntu servers with MAAS at once, some bonding pairs will have unexpected LACP status such as "Expired". It randomly happens at each provisioning with the default xenial kernel(4.4), but not reproducible with HWE kernel(4.13). I'm using Intel X710 cards (Dell-branded). Using the HWE kernel works as a workaround for short term, but it's not ideal since 4.13 is not covered by Canonical Livepatch service. How to reproduce: 1. configure LACP bonding with MAAS 2. provision machines 3. check the bonding status in /proc/net/bonding/bond* frequency of occurrence: About 5 bond pairs in 22 pairs at each provisioning. [reproducible combination] $ uname -a Linux comp006 4.4.0-116-generic #140-Ubuntu SMP Mon Feb 12 21:23:04 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux $ sudo ethtool -i eno1 driver: i40e version: 1.4.25-k firmware-version: 6.00 0x800034e6 18.3.6 expansion-rom-version: bus-info: 0000:01:00.0 supports-statistics: yes supports-test: yes supports-eeprom-access: yes supports-register-dump: yes supports-priv-flags: yes [non-reproducible combination] $ uname -a Linux comp006 4.13.0-36-generic #40~16.04.1-Ubuntu SMP Fri Feb 16 23:25:58 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux $ sudo ethtool -i eno1 driver: i40e version: 2.1.14-k firmware-version: 6.00 0x800034e6 18.3.6 expansion-rom-version: bus-info: 0000:01:00.0 supports-statistics: yes supports-test: yes supports-eeprom-access: yes supports-register-dump: yes supports-priv-flags: yes ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-116-generic 4.4.0-116.140 ProcVersionSignature: Ubuntu 4.4.0-116.140-generic 4.4.98 Uname: Linux 4.4.0-116-generic x86_64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Mar 6 06:37 seq crw-rw---- 1 root audio 116, 33 Mar 6 06:37 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Date: Tue Mar 6 06:46:32 2018 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' Lsusb: Bus 002 Device 002: ID 8087:8002 Intel Corp. Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 003: ID 413c:a001 Dell Computer Corp. Hub Bus 001 Device 002: ID 8087:800a Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. PowerEdge R730 PciMultimedia: ProcEnviron: TERM=screen PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-116-generic.efi.signed root=UUID=0528f88e-cf1a-43e2-813a-e7261b88d460 ro console=tty0 console=ttyS0,115200n8 RelatedPackageVersions: linux-restricted-modules-4.4.0-116-generic N/A linux-backports-modules-4.4.0-116-generic N/A linux-firmware 1.157.17 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/16/2017 dmi.bios.vendor: Dell Inc. dmi.bios.version: 2.5.5 dmi.board.name: 072T6D dmi.board.vendor: Dell Inc. dmi.board.version: A08 dmi.chassis.asset.tag: 0018880 dmi.chassis.type: 23 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr2.5.5:bd08/16/2017:svnDellInc.:pnPowerEdgeR730:pvr:rvnDellInc.:rn072T6D:rvrA08:cvnDellInc.:ct23:cvr: dmi.product.name: PowerEdge R730 dmi.sys.vendor: Dell Inc. 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