** Description changed: + [Impact] + Users of VLANs with LXC containers will see kernel BUGs when starting and stopping containers. + + [Test Case] + - In trusty, install lxc and vlan. + - Edit /etc/lxc/default.conf as follows: + lxc.network.type=vlan + lxc.network.vlan.id=10 + lxc.network.flags=up + lxc.network.link=eth0 + lxc.aa_profile = unconfined + - Setup LXC container + sudo lxc-create -t download -n u1 -- --dist ubuntu --release trusty --arch amd64 + - Run the following until you see the failure: + lxc-start --name u1 -d + lxc-stop --name u1 + + [Fix] + commit 5bb025fae53889cc99a21058c5dd369bf8cce820 + support patches: + commit 0a59f3a9fd7e2801a445682465ea0522ea497183 + commit 3ee32707560955e92d30f7f6e5138cb92a3b1a7e + + -- + Stopping a container and starting it again results in kernel stack trace with a vlan interface. ---8<--- lxc.network.type = vlan lxc.network.flags = up lxc.network.link = p3p1 lxc.network.vlan.id = 2 ---8<--- dpkg -l | grep lxc ii liblxc1 1.0.6-0ubuntu0.1 amd64 Linux Containers userspace tools (library) ii lxc 1.0.6-0ubuntu0.1 amd64 Linux Containers userspace tools ii lxc-templates 1.0.6-0ubuntu0.1 amd64 Linux Containers userspace tools (templates) ii python3-lxc 1.0.6-0ubuntu0.1 amd64 Linux Containers userspace tools (Python 3.x bindings) - cat /proc/cmdline + cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-3.13.0-44-generic root=UUID=6d1fc9aa-735c-4e61-ae1c-0a9d2587e77b ro acpi_osi=Linux acpi=force acpi_enforce_resources=lax i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1 i915.semaphores=1 - Snipplet from stack trace: ---8<--- [35188.374621] WARNING: CPU: 4 PID: 3933 at /build/buildd/linux-3.13.0/fs/sysfs/dir.c:486 sysfs_warn_dup+0x86/0xa0() [35188.374623] sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:1c.3/0000:02:00.0/net/p3p1/upper_vlan2' ---8<--- Is deconfiguration on stop of an lxc instance not working anymore?
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1410852 Title: restarting container with a vlan interface results in kernel stack trace To manage notifications about this bug go to: https://bugs.launchpad.net/lxc/+bug/1410852/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
