On Mon, Sep 11, 2023 at 07:15:18AM -0600, Jens Axboe wrote:
On 9/11/23 3:54 AM, Pavel Machek wrote:
Hi!
From: Kent Overstreet <kent.overstreet@xxxxxxxxx>
[ Upstream commit 168145f617d57bf4e474901b7ffa869337a802e6 ]
bio_iov_iter_get_pages() trims the IO based on the block size of the
block device the IO will be issued to.
However, bcachefs is a multi device filesystem; when we're creating the
bio we don't yet know which block device the bio will be submitted to -
we have to handle the alignment checks elsewhere.
Thus this is needed to avoid a null ptr deref.
We are certainly not going to backport bcachefs to -stable. Please
drop.
I already said as much 3 days ago:
https://lore.kernel.org/all/cd341326-cfaf-4796-8894-2241e7b630d9@xxxxxxxxx/
but didn't hear back yet.
Dropped, and sorry for lack of timely replies on this - I let them
collect feedback for a few weeks before going through it and dropping
what needs to be dropped.
--
Thanks,
Sasha
