** Changed in: linux (Ubuntu Yakkety)
Status: In Progress => Fix Committed
** Changed in: linux (Ubuntu Zesty)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1698264
Title:
Processes in "D" state due to zap_pid_ns_processes kernel call with
Ubuntu + Docker
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Xenial:
Fix Committed
Status in linux source package in Yakkety:
Fix Committed
Status in linux source package in Zesty:
Fix Committed
Bug description:
SRU Justification
Impact: In some cases some docker processes can be stuck in the D
state after a container has terminated. They will remain in this state
until reboot.
Fix: Cherry pick upstream commit
b9a985db98961ae1ba0be169f19df1c567e4ffe0, which has already been
included as a stable commit in maintained upstream stable kernels.
Test case: See below.
Regression potential: Low, this is a simple change and as stated above
the patch has already been shipped out in upstream stable kernels.
---
(please refer to
https://github.com/moby/moby/issues/31007#issuecomment-308877825 for
context)
Precondition: Ubuntu 16.04.2 with Docker 17.03 (kernel 4.4)
Steps to reproduce:
- Install latest Docker
- Run 300 containers with health check (for i in {1..300}; do docker run -d
-it --restart=always --name poc_$i talves/health_poc; done)
- Send termination signal to the containers (docker kill -s TERM $(docker ps
-q)
- A few processes are going to be stuck in "uninterruptible sleep" ("D"
state). The only know way to recover from this is host reboot
Expected behavior:
- All containers should be terminated without any dangling process
Actual behavior:
- Some processes are left in "D" state. In our production environment this
leads over time to performance degradation and maintenance issues due to
containers that cannot be stopped / removed.
A fix is provided on kernel 4.12 - it would be nice if it could be
backported and included in the next Ubuntu release within the
supported kernel.
Thanks in advance
---
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 May 29 16:54 seq
crw-rw---- 1 root audio 116, 33 May 29 16:54 timer
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.20.1-0ubuntu2.6
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: Cannot stat file /proc/11652/fd/4: Stale file handle
Cannot stat file /proc/11652/fd/5: Stale file handle
Cannot stat file /proc/11652/fd/6: Stale file handle
Cannot stat file /proc/11652/fd/7: Stale file handle
Cannot stat file /proc/11652/fd/11: Stale file handle
DistroRelease: Ubuntu 16.04
Ec2AMI: ami-45b69e52
Ec2AMIManifest: (unknown)
Ec2AvailabilityZone: us-east-1c
Ec2InstanceType: t2.large
Ec2Kernel: unavailable
Ec2Ramdisk: unavailable
IwConfig: Error: [Errno 2] No such file or directory
Lsusb: Error: command ['lsusb'] failed with exit code 1:
MachineType: Xen HVM domU
Package: linux (not installed)
PciMultimedia:
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 cirrusdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-78-generic
root=UUID=9b05a884-ac72-4bd2-8660-3bfa5cb22246 ro net.ifnames=0 biosdevname=0
cgroup_enable=memory swapaccount=1 console=tty1 console=ttyS0
ProcVersionSignature: Ubuntu 4.4.0-78.99-generic 4.4.62
RelatedPackageVersions:
linux-restricted-modules-4.4.0-78-generic N/A
linux-backports-modules-4.4.0-78-generic N/A
linux-firmware 1.157.10
RfKill: Error: [Errno 2] No such file or directory
Tags: xenial ec2-images
Uname: Linux 4.4.0-78-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 02/16/2017
dmi.bios.vendor: Xen
dmi.bios.version: 4.2.amazon
dmi.chassis.type: 1
dmi.chassis.vendor: Xen
dmi.modalias:
dmi:bvnXen:bvr4.2.amazon:bd02/16/2017:svnXen:pnHVMdomU:pvr4.2.amazon:cvnXen:ct1:cvr:
dmi.product.name: HVM domU
dmi.product.version: 4.2.amazon
dmi.sys.vendor: Xen
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