Re: Urgent fix for 4.15: 62530ed8b1d (bio: ensure __bio_clone_fast copies bi_partno)

On Mon, Nov 20, 2017 at 03:47:40PM -0800, Michael Lyle wrote:

Hi---

Previously sent to stable was this patch, and it's made it into
Linus's tree for 4.16.  It's a rather urgent data corruption issue
that affects at minimum bcache but possibly other block subsystems.
Several users have lost data.  The issue was introduced in the 4.15
branch by 74d46992e0d9 ("block: replace bi_bdev with a gendisk pointer
and partitions index").

I'd really appreciate anything that can be done to get this into a
stable 4.15 release soon.

Now queued up, thanks for letting me know.  Normally I wait until a
patch hits a public -rc release before adding it to a stable kernel
release, but if you ever want it ot get there sooner, always feel free
to just email stable@vger with this info and I will try to queue it up
sooner.

thanks,

greg k-h