Offsets and lengths need to be validated against the dma alignment. This
check was skipped for sufficiently a small bio with a single bvec, which
may allow an invalid request dispatched to the driver. Force the
validation for an unaligned bvec by forcing the bio split path that
handles this condition.
Fixes: 7eac331869 ("iomap: simplify direct io validity check")
Fixes: 5ff3f74e14 ("block: simplify direct io validity check")
Reported-by: Carlos Maiolino <cem@kernel.org>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Link: https://patch.msgid.link/20260612223205.465913-1-kbusch@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
9b0c3673c8