Do you you know if this is a regression? Was there a prior kernel version that did not exhibit this bug?
Also, it would be good to know if the latest mainline kernel also has the bug. It can be downloaded from: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14-rc1-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/1275809 Title: (docker/lxc) container restart causes kernel to lockup Status in “linux” package in Ubuntu: Incomplete Bug description: After restarting some 'ghost' docker containers on precise with the raring-lts kernel, the kernel locks up and shows: [1095015.392057] BUG: soft lockup - CPU#0 stuck for 22s! [gunicorn:12804] ... (for each core) Here is the original, more docker focused bug report: https://github.com/dotcloud/docker/issues/3873 I could reproduce this bug with various kernel versions. I've set the softlockup_panic=1 kernel parameter to get some stack traces. See this gist for stack trace for 3.5 and 3.8 kernels (will add 3.11 any minute): https://gist.github.com/discordianfish/7886354d9a19b2084775 It also contains a small script to reproduce this, although I couldn't reproduce it in a vagrant VM just our Dell R710 systems so far. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1275809/+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