[dm-devel] [git pull] device mapper changes for 6.1

[Christoph Hellwig]

On Tue, Oct 18, 2022 at 12:20:50PM -0400, Mike Snitzer wrote:
> 
> - Enhance DM ioctl interface to allow returning an error string to
>   userspace. Depends on exporting is_vmalloc_or_module_addr() to allow
>   DM core to conditionally free memory allocated with kasprintf().

That really does not sound like a good idea at all.  And it does not
seem to have any MM or core maintainer signoffs.