** Tags removed: kernel-key
** Tags added: kernel-da-key
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https://bugs.launchpad.net/bugs/1799497
Title:
4.15 kernel hard lockup about once a week
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Bionic:
Incomplete
Bug description:
My main server has been running into hard lockups about once a week
ever since I switched to the 4.15 Ubuntu 18.04 kernel.
When this happens, nothing is printed to the console, it's effectively
stuck showing a login prompt. The system is running with panic=1 on
the cmdline but isn't rebooting so the kernel isn't even processing
this as a kernel panic.
As this felt like a potential hardware issue, I had my hosting provider give
me a completely different system, different motherboard, different CPU,
different RAM and different storage, I installed that system on 18.04 and moved
my data over, a week later, I hit the issue again.
We've since also had a LXD user reporting similar symptoms here also on
varying hardware:
https://github.com/lxc/lxd/issues/5197
My system doesn't have a lot of memory pressure with about 50% of free memory:
root@vorash:~# free -m
total used free shared buff/cache
available
Mem: 31819 17574 402 513 13842
13292
Swap: 15909 2687 13222
I will now try to increase console logging as much as possible on the
system in the hopes that next time it hangs we can get a better idea
of what happened but I'm not too hopeful given the complete silence on
the console when this occurs.
System is currently on:
Linux vorash 4.15.0-36-generic #39-Ubuntu SMP Mon Sep 24 16:19:09 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
But I've seen this since the GA kernel on 4.15 so it's not a recent
regression.
---
ProblemType: Bug
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Oct 23 16:12 seq
crw-rw---- 1 root audio 116, 33 Oct 23 16:12 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.9-0ubuntu7.4
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord':
'arecord'
AudioDevicesInUse:
Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with
exit code 1: Cannot stat file /proc/22822/fd/10: Permission denied
Cannot stat file /proc/22831/fd/10: Permission denied
DistroRelease: Ubuntu 18.04
HibernationDevice:
RESUME=none
CRYPTSETUP=n
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 046b:ff10 American Megatrends, Inc. Virtual Keyboard
and Mouse
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Intel Corporation S1200SP
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
Package: linux (not installed)
PciMultimedia:
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 mgadrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-38-generic
root=UUID=575c878a-0be6-4806-9c83-28f67aedea65 ro biosdevname=0 net.ifnames=0
panic=1 verbose console=tty0 console=ttyS0,115200n8
ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18
RelatedPackageVersions:
linux-restricted-modules-4.15.0-38-generic N/A
linux-backports-modules-4.15.0-38-generic N/A
linux-firmware 1.173.1
RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
Tags: bionic
Uname: Linux 4.15.0-38-generic x86_64
UnreportableReason: This report is about a package that is not installed.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: False
dmi.bios.date: 01/25/2018
dmi.bios.vendor: Intel Corporation
dmi.bios.version: S1200SP.86B.03.01.1029.012520180838
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: S1200SP
dmi.board.vendor: Intel Corporation
dmi.board.version: H57532-271
dmi.chassis.asset.tag: ....................
dmi.chassis.type: 23
dmi.chassis.vendor: ...............................
dmi.chassis.version: ..................
dmi.modalias:
dmi:bvnIntelCorporation:bvrS1200SP.86B.03.01.1029.012520180838:bd01/25/2018:svnIntelCorporation:pnS1200SP:pvr....................:rvnIntelCorporation:rnS1200SP:rvrH57532-271:cvn...............................:ct23:cvr..................:
dmi.product.family: Family
dmi.product.name: S1200SP
dmi.product.version: ....................
dmi.sys.vendor: Intel Corporation
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