)]}'
{
  "commit": "79bbefb19f1359fb2cbd144d5a054649e7e583be",
  "tree": "26a75c709f304b8ba73f135a0741abf15549b6b0",
  "parents": [
    "23c51bed6f5d21aeebeaf9cdcd63ac3d3cbd0f83"
  ],
  "author": {
    "name": "Chao Yu",
    "email": "yuchao0@huawei.com",
    "time": "Mon Mar 23 17:43:04 2020 +0800"
  },
  "committer": {
    "name": "Jaegeuk Kim",
    "email": "jaegeuk@kernel.org",
    "time": "Mon Mar 30 20:46:25 2020 -0700"
  },
  "message": "f2fs: fix NULL pointer dereference in f2fs_verity_work()\n\nIf both compression and fsverity feature is on, generic/572 will\nreport below NULL pointer dereference bug.\n\n BUG: kernel NULL pointer dereference, address: 0000000000000018\n RIP: 0010:f2fs_verity_work+0x60/0x90 [f2fs]\n #PF: supervisor read access in kernel mode\n Workqueue: fsverity_read_queue f2fs_verity_work [f2fs]\n RIP: 0010:f2fs_verity_work+0x60/0x90 [f2fs]\n Call Trace:\n  process_one_work+0x16c/0x3f0\n  worker_thread+0x4c/0x440\n  ? rescuer_thread+0x350/0x350\n  kthread+0xf8/0x130\n  ? kthread_unpark+0x70/0x70\n  ret_from_fork+0x35/0x40\n\nThere are two issue in f2fs_verity_work():\n- it needs to traverse and verify all pages in bio.\n- if pages in bio belong to non-compressed cluster, accessing\ndecompress IO context stored in page private will cause NULL\npointer dereference.\n\nFix them.\n\nSigned-off-by: Chao Yu \u003cyuchao0@huawei.com\u003e\nSigned-off-by: Jaegeuk Kim \u003cjaegeuk@kernel.org\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "d66d372d104dc97bcba12c128b887f052bed18d2",
      "old_mode": 33188,
      "old_path": "fs/f2fs/compress.c",
      "new_id": "adac6fcb2830ee4667679cddcac99c163cfe33fc",
      "new_mode": 33188,
      "new_path": "fs/f2fs/compress.c"
    },
    {
      "type": "modify",
      "old_id": "bb66faf09eeaffeb399ce2ccad111c2b07b80985",
      "old_mode": 33188,
      "old_path": "fs/f2fs/data.c",
      "new_id": "0197b7b80d191736f8041fa87576110ad51ba399",
      "new_mode": 33188,
      "new_path": "fs/f2fs/data.c"
    }
  ]
}