Chao Yu fcc2d8cc96 f2fs: fix to detect corrupted meta ino
It is possible that ino of dirent or orphan inode is corrupted in a
fuzzed image, occasionally, if corrupted ino is equal to meta ino:
meta_ino, node_ino or compress_ino, caller of f2fs_iget() from below
call paths will get meta inode directly, it's not allowed, let's
add sanity check to detect such cases.

case #1
- recover_dentry
 - __f2fs_find_entry
 - f2fs_iget_retry

case #2
- recover_orphan_inode
 - f2fs_iget_retry

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2022-10-04 13:31:44 -07:00
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