System crash on a machine without swap
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Incomplete
|
High
|
Unassigned |
Bug Description
From a long time, I use a machine without swap, because most of the time if I run out of memory, swap would save me at too high a cost (waiting for a long time).
Yesterday, I upgraded from 16.10 to ubuntu 17.04 and changed my sessions from unity to gnome.
The bug occurs as firefox is requesting more memory, and about 10/15% memory is still free.
First Firefox freeze, I try to kill -SIGKILL it without success, then whole system freezes. It happens three times today.
I attach the kern.log extracts reporting the problem
Each time I have the same message: kernel BUG at /build/
There is no swap partition, and swapinness is set to 0.
$ tail -n 2 /etc/sysctl.conf
# I say NO SWAP
vm.swappiness = 0
$ LANG=C free -h
total used free shared buff/cache available
Mem: 7,7G 2,1G 3,8G 433M 1,9G 4,9G
Swap: 0B 0B 0B
Also:
$ LANG=C systemctl --type swap
0 loaded units listed. Pass --all to see loaded but inactive units, too.
To show all installed unit files use 'systemctl list-unit-files'.
$ LANG=C systemctl list-unit-files --type swap
0 unit files listed.
ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: linux-image-
ProcVersionSign
Uname: Linux 4.10.0-20-generic x86_64
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
CurrentDesktop: GNOME
Date: Tue May 2 20:46:06 2017
HibernationDevice: RESUME=
InstallationDate: Installed on 2015-11-10 (538 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: Intel Corporation Skylake Platform
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.164
SourcePackage: linux
UpgradeStatus: Upgraded to zesty on 2017-02-25 (66 days ago)
dmi.bios.date: 11/06/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 5.11
dmi.board.
dmi.board.name: WhiteTip Mountain1 Fab2
dmi.board.vendor: Topstar
dmi.board.version: RVP7
dmi.chassis.
dmi.chassis.type: 9
dmi.chassis.vendor: Default string
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: Skylake Platform
dmi.product.
dmi.sys.vendor: Intel Corporation
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