dmesg time wildly incorrect on paravirtual EC2 instances.
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Confirmed
|
Medium
|
Stefan Bader |
Bug Description
On Ubuntu 14.04 EC2 instances, during startup the dmesg time goes from 0 seconds to thousands of seconds. This causes kernel logs to be recorded for months in the future.
This appears to be related to the kernel trusting the TSC clock on Xen servers, as described here:
https:/
But I am not sure that is the cause.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-
ProcVersionSign
Uname: Linux 3.13.0-32-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jul 29 14:41 seq
crw-rw---- 1 root audio 116, 33 Jul 29 14:41 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.14.1-0ubuntu3.2
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:
CRDA: Error: [Errno 2] No such file or directory: 'iw'
CurrentDmesg: [7562292.301737] init: plymouth-
Date: Tue Jul 29 14:47:54 2014
Ec2AMI: ami-00dc1368
Ec2AMIManifest: (unknown)
Ec2Availability
Ec2InstanceType: m1.small
Ec2Kernel: aki-919dcaf8
Ec2Ramdisk: unavailable
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lspci:
Lsusb: Error: [Errno 2] No such file or directory: 'lsusb'
PciMultimedia:
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB:
ProcKernelCmdLine: root=LABEL=
RelatedPackageV
linux-
linux-
linux-firmware N/A
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:
---
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jul 29 14:41 seq
crw-rw---- 1 root audio 116, 33 Jul 29 14:41 timer
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory
CurrentDmesg: [7562292.301737] init: plymouth-
DistroRelease: Ubuntu 14.04
Ec2AMI: ami-00dc1368
Ec2AMIManifest: (unknown)
Ec2Availability
Ec2InstanceType: m1.small
Ec2Kernel: aki-919dcaf8
Ec2Ramdisk: unavailable
IwConfig: Error: [Errno 2] No such file or directory
Lspci:
Lsusb: Error: [Errno 2] No such file or directory
Package: linux (not installed)
PciMultimedia:
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB:
ProcKernelCmdLine: root=LABEL=
ProcVersionSign
RelatedPackageV
linux-
linux-
linux-firmware N/A
RfKill: Error: [Errno 2] No such file or directory
Tags: trusty ec2-images
Uname: Linux 3.13.0-32-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin ssh sudo
WifiSyslog:
_MarkForUpload: True
Changed in linux (Ubuntu): | |
assignee: | nobody → Stefan Bader (smb) |
Changed in linux (Ubuntu): | |
importance: | Undecided → Medium |
Appears to be related to bug #727459 , but I've added a new bug per request.