Public bug reported:
Ubuntu 16.04 guest VM running under vmware hypervisor. VM is used for
running qemu/docker instances of virtual routers.
After upgrade to linux-image-4.4.0-184-generic we get hard-lockup of the
kernel (no interaction on the console, no crash report or anything) as
soon as VM is put under load (several minutes in, 5 virtual routers
started and configured).
VM was running -177 or -178 for ~50 days without issue. I tested -179 as
well, doesn't have this problem. linux-image-4.15.0-106-generic (latest
hwe kernel) also doesn't have this problem. All of these are Ubuntu
provided kernels installed using regular install process.
So to sum up:
Works: 4.4.0-177 to -179. 4.15.0-106 also works.
Doesn't work: 4.4.0-184 causes immediate problems (within 10 minutes
after starting this test/simulation environment). Hard-lockup only
happens during the test and seems to be either memory/load dependent.
Unfortunately I don't have any debug output because of this hard-lockup.
$ sudo dpkg --list | grep -i linux-image
ii linux-image-4.15.0-106-generic 4.15.0-106.107~16.04.1
amd64
Signed kernel image generic
rc linux-image-4.4.0-177-generic 4.4.0-177.207
amd64 Signed kernel image generic
rc linux-image-4.4.0-178-generic 4.4.0-178.208
amd64 Signed kernel image generic
ii linux-image-4.4.0-179-generic 4.4.0-179.209
amd64 Signed kernel image generic
ii linux-image-4.4.0-184-generic 4.4.0-184.214
amd64 Signed kernel image generic
ii linux-image-generic 4.4.0.184.190
amd64 Generic Linux kernel image
ii linux-image-generic-hwe-16.04 4.15.0.106.111
amd64 Generic Linux kernel image
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-184-generic 4.4.0-184.214
ProcVersionSignature: Ubuntu 4.15.0-106.107~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-106-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.23
Architecture: amd64
Date: Fri Jun 26 07:10:53 2020
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-signed (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1885249
Title:
hard lock kernel
Status in linux-signed package in Ubuntu:
New
Bug description:
Ubuntu 16.04 guest VM running under vmware hypervisor. VM is used for
running qemu/docker instances of virtual routers.
After upgrade to linux-image-4.4.0-184-generic we get hard-lockup of
the kernel (no interaction on the console, no crash report or
anything) as soon as VM is put under load (several minutes in, 5
virtual routers started and configured).
VM was running -177 or -178 for ~50 days without issue. I tested -179
as well, doesn't have this problem. linux-image-4.15.0-106-generic
(latest hwe kernel) also doesn't have this problem. All of these are
Ubuntu provided kernels installed using regular install process.
So to sum up:
Works: 4.4.0-177 to -179. 4.15.0-106 also works.
Doesn't work: 4.4.0-184 causes immediate problems (within 10 minutes
after starting this test/simulation environment). Hard-lockup only
happens during the test and seems to be either memory/load dependent.
Unfortunately I don't have any debug output because of this hard-
lockup.
$ sudo dpkg --list | grep -i linux-image
ii linux-image-4.15.0-106-generic 4.15.0-106.107~16.04.1
amd64
Signed kernel image generic
rc linux-image-4.4.0-177-generic 4.4.0-177.207
amd64 Signed kernel image generic
rc linux-image-4.4.0-178-generic 4.4.0-178.208
amd64 Signed kernel image generic
ii linux-image-4.4.0-179-generic 4.4.0-179.209
amd64 Signed kernel image generic
ii linux-image-4.4.0-184-generic 4.4.0-184.214
amd64 Signed kernel image generic
ii linux-image-generic 4.4.0.184.190
amd64 Generic Linux kernel image
ii linux-image-generic-hwe-16.04 4.15.0.106.111
amd64 Generic Linux kernel image
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-184-generic 4.4.0-184.214
ProcVersionSignature: Ubuntu 4.15.0-106.107~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-106-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.23
Architecture: amd64
Date: Fri Jun 26 07:10:53 2020
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed
UpgradeStatus: No upgrade log present (probably fresh install)
To manage notifications about this bug go to:
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