Re: [PATCH v3 5/5] block: validate user space vectors during extraction
Hannes Reinecke <[email protected]>
| Newsgroups | dev.linux.lists.dm-devel,org.kernel.vger.linux-block,org.kernel.vger.linux-fsdevel,org.kernel.vger.stable |
|---|---|
| Message-ID | <[email protected]> |
On 6/24/26 7:09 PM, Keith Busch wrote: > From: Keith Busch <[email protected]> > > The bio-based drivers don't necessarily check the alignment split, and > stacking block drivers don't always handle a misalignment detected after > submitting the bio. Validate user vectors against the device's > dma_alignment as the bio is built from the iov_iter, rejecting > misaligned early with -EINVAL. > > Cc: [email protected] > Fixes: 5ff3f74e145a ("block: simplify direct io validity check") > Fixes: 7eac33186957 ("iomap: simplify direct io validity check") > Signed-off-by: Keith Busch <[email protected]> > --- > block/bio.c | 56 +++++++++++++++++++++++++++++++++++++++++--- > block/blk-map.c | 2 +- > block/fops.c | 2 +- > fs/iomap/direct-io.c | 1 + > include/linux/bio.h | 2 +- > include/linux/uio.h | 10 +++++++- > lib/iov_iter.c | 9 ++++++- > 7 files changed, 74 insertions(+), 8 deletions(-) > Reviewed-by: Hannes Reinecke <[email protected]> Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect [email protected] +49 911 74053 688 SUSE Software Solutions GmbH, Frankenstr. 146, 90461 Nürnberg HRB 36809 (AG Nürnberg), GF: I. Totev, A. McDonald, W. Knoblich