Re: [PATCH] bad_inode: add missing i_op initializers

From: Christoph Hellwig
Date: Mon Nov 07 2016 - 10:02:53 EST


On Mon, Nov 07, 2016 at 10:16:21AM +0100, Miklos Szeredi wrote:
> New inode operations were forgotten to be added to bad_inode. Most of the
> time the op is checked for NULL before being called but marking the inode
> bad and the check can race (very unlikely).
>
> However in case of ->get_link() only DCACHE_SYMLINK_TYPE is checked before
> calling the op, so there's no race and will definitely oops when trying to
> follow links on such a beast.
>
> Also remove comments about extinct ops.

Can someone come up with some BUILD_BUG_ON magic to catch issues like
this?