ext4: fix special inode number checks in __ext4_iget()
authorTheodore Ts'o <tytso@mit.edu>
Tue, 1 Jan 2019 03:34:31 +0000 (22:34 -0500)
committerTheodore Ts'o <tytso@mit.edu>
Tue, 1 Jan 2019 03:34:31 +0000 (22:34 -0500)
The check for special (reserved) inode number checks in __ext4_iget()
was broken by commit 8a363970d1dc: ("ext4: avoid declaring fs
inconsistent due to invalid file handles").  This was caused by a
botched reversal of the sense of the flag now known as
EXT4_IGET_SPECIAL (when it was previously named EXT4_IGET_NORMAL).
Fix the logic appropriately.

Fixes: 8a363970d1dc ("ext4: avoid declaring fs inconsistent...")
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable@kernel.org
fs/ext4/inode.c

index 165ff33..34d7e07 100644 (file)
@@ -4834,7 +4834,7 @@ struct inode *__ext4_iget(struct super_block *sb, unsigned long ino,
        gid_t i_gid;
        projid_t i_projid;
 
-       if (((flags & EXT4_IGET_NORMAL) &&
+       if ((!(flags & EXT4_IGET_SPECIAL) &&
             (ino < EXT4_FIRST_INO(sb) && ino != EXT4_ROOT_INO)) ||
            (ino < EXT4_ROOT_INO) ||
            (ino > le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count))) {