)]}'
{
  "commit": "4e474a00d7ff746ed177ddae14fa8b2d4bad7a00",
  "tree": "1255e88406191e4daa29e59ebd37fdc8042184e4",
  "parents": [
    "4e75732035d7e97e001bdf6e3149d3967c0221de"
  ],
  "author": {
    "name": "Lucas De Marchi",
    "email": "lucas.demarchi@profusion.mobi",
    "time": "Thu Mar 22 14:42:22 2012 -0700"
  },
  "committer": {
    "name": "Eric W. Biederman",
    "email": "ebiederm@xmission.com",
    "time": "Thu Mar 22 14:46:56 2012 -0700"
  },
  "message": "sysctl: protect poll() in entries that may go away\n\nProtect code accessing ctl_table by grabbing the header with grab_header()\nand after releasing with sysctl_head_finish().  This is needed if poll()\nis called in entries created by modules: currently only hostname and\ndomainname support poll(), but this bug may be triggered when/if modules\nuse it and if user called poll() in a file that doesn\u0027t support it.\n\nDave Jones reported the following when using a syscall fuzzer while\nhibernating/resuming:\n\nRIP: 0010:[\u003cffffffff81233e3e\u003e]  [\u003cffffffff81233e3e\u003e] proc_sys_poll+0x4e/0x90\nRAX: 0000000000000145 RBX: ffff88020cab6940 RCX: 0000000000000000\nRDX: ffffffff81233df0 RSI: 6b6b6b6b6b6b6b6b RDI: ffff88020cab6940\n[ ... ]\nCode: 00 48 89 fb 48 89 f1 48 8b 40 30 4c 8b 60 e8 b8 45 01 00 00 49 83\n7c 24 28 00 74 2e 49 8b 74 24 30 48 85 f6 74 24 48 85 c9 75 32 \u003c8b\u003e 16\nb8 45 01 00 00 48 63 d2 49 39 d5 74 10 8b 06 48 98 48 89\n\nIf an entry goes away while we are polling() it, ctl_table may not exist\nanymore.\n\nReported-by: Dave Jones \u003cdavej@redhat.com\u003e\nSigned-off-by: Lucas De Marchi \u003clucas.demarchi@profusion.mobi\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\nCc: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nCc: stable@vger.kernel.org\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "a7708b7c957ff8a8b1d9bb7c2b3f37ee25745310",
      "old_mode": 33188,
      "old_path": "fs/proc/proc_sysctl.c",
      "new_id": "47b474b572c1ea29c8a75abb1c444c309f9e3930",
      "new_mode": 33188,
      "new_path": "fs/proc/proc_sysctl.c"
    }
  ]
}