Hello,
The following recent kernel update completely break our lxc-start usage on precise both with precise original kernel 3.2 + also the trusty-lts-stack using 3.13
After installing those new kernel updates all lxc-start of a container fail with:
"Permission denied - mount failed '/dev/pts/ptmx'->'/dev/ptmx'"
with strace pointing to:
13695 mount("/dev/pts/ptmx", "/dev/ptmx", 0x7f4d68c85d37, MS_BIND, NULL) = -1 EACCES (Permission denied)
and dmesg showing:
Oct 20 10:59:00 titan226 kernel: [ 663.508664] type=1400
audit(1445331540.807:29): apparmor="DENIED" operation="mount"
info="failed type match" error=-13 profile="/usr/bin/lxc-start"
name="/dev/ptmx" pid=2897 comm="lxc-start"
srcname="/dev/pts/ptmx" flags="rw, bind"
After downgrading kernel version the problem immediately dissappeared and the lxc-start for containers works again as before.
Bad versions:
ii linux-image-3.13.0-66-generic 3.13.0-66.108~precise1 Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii linux-image-3.2.0-92-generic 3.2.0-92.130 Linux kernel image for version 3.2.0 on 64 bit x86 SMP
Good versions:
ii linux-image-3.13.0-61-generic 3.13.0-61.100~precise1 Linux kernel image for version 3.13.0 on 64 bit x86 SMP
ii linux-image-3.2.0-88-generic 3.2.0-88.126 Linux kernel image for version 3.2.0 on 64 bit x86 SMP
From kernel changelog maybe this other issue here maybe causing it but not verified:
* SAUCE: (no-up) apparmor: fix mount not handling disconnected paths
- LP: #1496430
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.13.0-61-generic.
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.0.1-0ubuntu17.11
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D3p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info: Error: [Errno 2] No such file or directory
Card0.Amixer.values: Error: [Errno 2] No such file or directory
DistroRelease: Ubuntu 12.04
HibernationDevice: RESUME=UUID=ee5d3bc2-531d-4fbf-ba3f-033c27498274
IwConfig: Error: [Errno 2] No such file or directory
MachineType: FUJITSU PRIMERGY MX130 S1
MarkForUpload: True
Package: linux (not installed)
ProcEnviron:
LANGUAGE=en_US
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-61-generic root=UUID=8c11de07-6403-46cf-994b-15750a7404ba ro rootdelay=80
ProcVersionSignature: Ubuntu 3.13.0-61.100~precise1-generic 3.13.11-ckt22
RelatedPackageVersions:
linux-restricted-modules-3.13.0-61-generic N/A
linux-backports-modules-3.13.0-61-generic N/A
linux-firmware 1.79.18
RfKill: Error: [Errno 2] No such file or directory
Tags: precise
Uname: Linux 3.13.0-61-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
dmi.bios.date: 01/18/2011
dmi.bios.vendor: FUJITSU // Phoenix Technologies Ltd.
dmi.bios.version: 6.00 R1.01.2974.A1
dmi.board.asset.tag: -
dmi.board.name: D2974
dmi.board.vendor: FUJITSU
dmi.board.version: S26361-D2974-A1
dmi.chassis.type: 3
dmi.chassis.vendor: FUJITSU
dmi.chassis.version: MX130S1F
dmi.modalias: dmi:bvnFUJITSU//PhoenixTechnologiesLtd.:bvr6.00R1.01.2974.A1:bd01/18/2011:svnFUJITSU:pnPRIMERGYMX130S1:pvr:rvnFUJITSU:rnD2974:rvrS26361-D2974-A1:cvnFUJITSU:ct3:cvrMX130S1F:
dmi.product.name: PRIMERGY MX130 S1
dmi.sys.vendor: FUJITSU
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1507959
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.