{"action":"created","issue":{"url":"https://api.github.com/repos/docker/docker/issues/18758","labels_url":"https://api.github.com/repos/docker/docker/issues/18758/labels{/name}","comments_url":"https://api.github.com/repos/docker/docker/issues/18758/comments","events_url":"https://api.github.com/repos/docker/docker/issues/18758/events","html_url":"https://github.com/docker/docker/issues/18758","id":122848136,"number":18758,"title":"hang on `docker stop`","user":{"login":"andybalholm","id":868908,"avatar_url":"https://avatars.githubusercontent.com/u/868908?v=3","gravatar_id":"","url":"https://api.github.com/users/andybalholm","html_url":"https://github.com/andybalholm","followers_url":"https://api.github.com/users/andybalholm/followers","following_url":"https://api.github.com/users/andybalholm/following{/other_user}","gists_url":"https://api.github.com/users/andybalholm/gists{/gist_id}","starred_url":"https://api.github.com/users/andybalholm/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/andybalholm/subscriptions","organizations_url":"https://api.github.com/users/andybalholm/orgs","repos_url":"https://api.github.com/users/andybalholm/repos","events_url":"https://api.github.com/users/andybalholm/events{/privacy}","received_events_url":"https://api.github.com/users/andybalholm/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":7,"created_at":"2015-12-17T23:51:19Z","updated_at":"2015-12-19T00:16:50Z","closed_at":null,"body":"When we stop our Discourse Docker container with `docker stop app` or `service docker restart`, it hangs. One or more `runsv` processes inside the container hang, consuming 100% CPU. top shows the CPU usage as \"system\" usage, so they are hung inside the kernel somewhere. Because of this, they can't be killed even with SIGKILL; we need to reboot the server.\r\n\r\nThis is a regression that showed up after we did some routine updates on the server (the ones that Ubuntu nags you to do). The packages that were upgraded included the kernel and Docker.\r\n\r\n```\r\nroot@mail:~# uname -a\r\nLinux mail.daystar.io 3.13.0-73-generic #116-Ubuntu SMP Fri Dec 4 15:31:30 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux\r\nroot@mail:~# docker version\r\nClient:\r\n Version:      1.9.1\r\n API version:  1.21\r\n Go version:   go1.4.3\r\n Git commit:   a34a1d5\r\n Built:        Fri Nov 20 17:56:04 UTC 2015\r\n OS/Arch:      linux/amd64\r\n\r\nServer:\r\n Version:      1.9.1\r\n API version:  1.21\r\n Go version:   go1.4.3\r\n Git commit:   a34a1d5\r\n Built:        Fri Nov 20 17:56:04 UTC 2015\r\n OS/Arch:      linux/amd64\r\nroot@mail:~# docker info\r\nContainers: 34\r\nImages: 131\r\nServer Version: 1.9.1\r\nStorage Driver: aufs\r\n Root Dir: /var/lib/docker/aufs\r\n Backing Filesystem: extfs\r\n Dirs: 230\r\n Dirperm1 Supported: false\r\nExecution Driver: native-0.2\r\nLogging Driver: json-file\r\nKernel Version: 3.13.0-73-generic\r\nOperating System: Ubuntu 14.04.3 LTS\r\nCPUs: 12\r\nTotal Memory: 51.08 GiB\r\nName: mail.daystar.io\r\nID: 5PHA:QONL:U6TH:2IPO:AVNK:LMCW:R6XT:AVZZ:KNGC:T4TF:SX5S:5DHN\r\nWARNING: No swap limit support\r\n\r\n```"},"comment":{"url":"https://api.github.com/repos/docker/docker/issues/comments/165925446","html_url":"https://github.com/docker/docker/issues/18758#issuecomment-165925446","issue_url":"https://api.github.com/repos/docker/docker/issues/18758","id":165925446,"user":{"login":"thaJeztah","id":1804568,"avatar_url":"https://avatars.githubusercontent.com/u/1804568?v=3","gravatar_id":"","url":"https://api.github.com/users/thaJeztah","html_url":"https://github.com/thaJeztah","followers_url":"https://api.github.com/users/thaJeztah/followers","following_url":"https://api.github.com/users/thaJeztah/following{/other_user}","gists_url":"https://api.github.com/users/thaJeztah/gists{/gist_id}","starred_url":"https://api.github.com/users/thaJeztah/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/thaJeztah/subscriptions","organizations_url":"https://api.github.com/users/thaJeztah/orgs","repos_url":"https://api.github.com/users/thaJeztah/repos","events_url":"https://api.github.com/users/thaJeztah/events{/privacy}","received_events_url":"https://api.github.com/users/thaJeztah/received_events","type":"User","site_admin":false},"created_at":"2015-12-19T00:16:50Z","updated_at":"2015-12-19T00:16:50Z","body":"@andybalholm actually, they are, though thinking now that it's not on \"stop\", just during the process"}}