)]}'
{
  "commit": "7b574b7b0124ed344911f5d581e9bc2d83bbeb19",
  "tree": "6511203310d77359017accb466f3f5e1e90abe13",
  "parents": [
    "7d3b56ba37a95f1f370f50258ed3954c304c524b"
  ],
  "author": {
    "name": "Li Zefan",
    "email": "lizf@cn.fujitsu.com",
    "time": "Sun Jan 04 12:00:45 2009 -0800"
  },
  "committer": {
    "name": "Linus Torvalds",
    "email": "torvalds@linux-foundation.org",
    "time": "Sun Jan 04 13:33:19 2009 -0800"
  },
  "message": "cgroups: fix a race between cgroup_clone and umount\n\nThe race is calling cgroup_clone() while umounting the ns cgroup subsys,\nand thus cgroup_clone() might access invalid cgroup_fs, or kill_sb() is\ncalled after cgroup_clone() created a new dir in it.\n\nThe BUG I triggered is BUG_ON(root-\u003enumber_of_cgroups !\u003d 1);\n\n  ------------[ cut here ]------------\n  kernel BUG at kernel/cgroup.c:1093!\n  invalid opcode: 0000 [#1] SMP\n  ...\n  Process umount (pid: 5177, ti\u003de411e000 task\u003de40c4670 task.ti\u003de411e000)\n  ...\n  Call Trace:\n   [\u003cc0493df7\u003e] ? deactivate_super+0x3f/0x51\n   [\u003cc04a3600\u003e] ? mntput_no_expire+0xb3/0xdd\n   [\u003cc04a3ab2\u003e] ? sys_umount+0x265/0x2ac\n   [\u003cc04a3b06\u003e] ? sys_oldumount+0xd/0xf\n   [\u003cc0403911\u003e] ? sysenter_do_call+0x12/0x31\n  ...\n  EIP: [\u003cc0456e76\u003e] cgroup_kill_sb+0x23/0xe0 SS:ESP 0068:e411ef2c\n  ---[ end trace c766c1be3bf944ac ]---\n\nCc: Serge E. Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: \"Serge E. Hallyn\" \u003cserue@us.ibm.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "48348dde6d814ea52270edee180c3db89da5d0c4",
      "old_mode": 33188,
      "old_path": "kernel/cgroup.c",
      "new_id": "891a84eb9d30c193e7094b39a8b1ad1d3611d251",
      "new_mode": 33188,
      "new_path": "kernel/cgroup.c"
    }
  ]
}