Hans Holmberg 0d92a3eaa6 null_blk: set dma alignment to logical block size ... This driver assumes that bio vectors are memory aligned to the logical block size, so set the queue limit to reflect that. Unless we set up the limit based on the logical block size, we will go out of page bounds in copy_to_nullb / copy_from_nullb. Apparently this wasn't noticed so far because none of the tests generate such buffers, but since commit 851c4c96db ("xfs: implement XFS_IOC_DIOINFO in terms of vfs_getattr") xfstests generates unaligned I/O, which now lead to memory corruption when using null_blk devices with 4k block size. Fixes: bf8d08532b ("iomap: add support for dma aligned direct-io") Fixes: b1a000d3b8 ("block: relax direct io memory alignment") Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Hans Holmberg <hans.holmberg@wdc.com> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2025-10-31 09:03:12 -06:00
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Kconfig	block: null_blk: make fault-injection dynamically configurable per device	2023-04-13 07:38:55 -06:00
Makefile	…
main.c	null_blk: set dma alignment to logical block size	2025-10-31 09:03:12 -06:00
null_blk.h	null_blk: do partial IO for bad blocks	2025-03-03 11:17:52 -07:00
trace.c	…
trace.h	null_blk: Fix two sparse warnings	2024-05-13 17:51:17 -06:00
zoned.c	null_blk: do partial IO for bad blocks	2025-03-03 11:17:52 -07:00