Re: [PATCH v2] configfs: Fix use-after-free when accessing sd->s_dentry

[Christoph Hellwig]

On Thu, May 16, 2019 at 06:27:53PM +0530, stummala@xxxxxxxxxxxxxx wrote:
> Hi Christoph, Al,
>
> Can you please consider this patch for merging?

I've been sitting on this for a while, mostly because I can't convince
myself it is safe.  What protects other threads from using ->s_dentry
just when we clear it?  Also why would sd->s_dentry == dentry ever be
false?