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. ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Tags added: trusty -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1507959 Title: Regression: Kernel update breaks all lxc-containers lxc-start failing with (apparmor="DENIED" operation="mount") Status in linux package in Ubuntu: Incomplete Bug description: 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1507959/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp