ext4: mark inode dirty after converting inline directory

commit b9cf625d6ecde0d372e23ae022feead72b4228a6 upstream.

If ext4_convert_inline_data() was called on a directory with inline
data, the filesystem was left in an inconsistent state (as considered by
e2fsck) because the file size was not increased to cover the new block.
This happened because the inode was not marked dirty after i_disksize
was updated.  Fix this by marking the inode dirty at the end of
ext4_finish_convert_inline_dir().

This bug was probably not noticed before because most users mark the
inode dirty afterwards for other reasons.  But if userspace executed
FS_IOC_SET_ENCRYPTION_POLICY with invalid parameters, as exercised by
'kvm-xfstests -c adv generic/396', then the inode was never marked dirty
after updating i_disksize.

Fixes: 3c47d54170b6a678875566b1b8d6dcf57904e49b
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c
index d4be4e23bc216310e3354bb0abb010b4e41d620b..dad8e7bdf0a61c19c0afe352d1252ffa09cfdf84 100644 (file)
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -1158,10 +1158,9 @@ static int ext4_finish_convert_inline_dir(handle_t *handle,
        set_buffer_uptodate(dir_block);
        err = ext4_handle_dirty_dirent_node(handle, inode, dir_block);
        if (err)
-               goto out;
+               return err;
        set_buffer_verified(dir_block);
-out:
-       return err;
+       return ext4_mark_inode_dirty(handle, inode);
 }
 
 static int ext4_convert_inline_data_nolock(handle_t *handle,