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| author | Theodore Ts'o <tytso@mit.edu> | 2023-05-23 23:49:48 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2023-05-28 14:18:03 -0400 |
| commit | b3e6bcb94590dea45396b9481e47b809b1be4afa (patch) | |
| tree | fc4ee8b7fd26e3e0df1dd673fd3b4f53739d3e62 /fs/ext4/ext4.h | |
| parent | 7877cb91f1081754a1487c144d85dc0d2e2e7fc4 (diff) | |
| download | linux-b3e6bcb94590dea45396b9481e47b809b1be4afa.tar.gz linux-b3e6bcb94590dea45396b9481e47b809b1be4afa.tar.bz2 linux-b3e6bcb94590dea45396b9481e47b809b1be4afa.zip | |
ext4: add EA_INODE checking to ext4_iget()
Add a new flag, EXT4_IGET_EA_INODE which indicates whether the inode
is expected to have the EA_INODE flag or not. If the flag is not
set/clear as expected, then fail the iget() operation and mark the
file system as corrupted.
This commit also makes the ext4_iget() always perform the
is_bad_inode() check even when the inode is already inode cache. This
allows us to remove the is_bad_inode() check from the callers of
ext4_iget() in the ea_inode code.
Reported-by: syzbot+cbb68193bdb95af4340a@syzkaller.appspotmail.com
Reported-by: syzbot+62120febbd1ee3c3c860@syzkaller.appspotmail.com
Reported-by: syzbot+edce54daffee36421b4c@syzkaller.appspotmail.com
Cc: stable@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Link: https://lore.kernel.org/r/20230524034951.779531-2-tytso@mit.edu
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 6948d673bba2..9525c52b78dc 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2901,7 +2901,8 @@ typedef enum { EXT4_IGET_NORMAL = 0, EXT4_IGET_SPECIAL = 0x0001, /* OK to iget a system inode */ EXT4_IGET_HANDLE = 0x0002, /* Inode # is from a handle */ - EXT4_IGET_BAD = 0x0004 /* Allow to iget a bad inode */ + EXT4_IGET_BAD = 0x0004, /* Allow to iget a bad inode */ + EXT4_IGET_EA_INODE = 0x0008 /* Inode should contain an EA value */ } ext4_iget_flags; extern struct inode *__ext4_iget(struct super_block *sb, unsigned long ino, |