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. -- Jens Axboe
