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| author | Keith Busch <kbusch@kernel.org> | 2023-11-21 01:18:31 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-11-21 01:21:38 +0300 |
| commit | d6fef34ee4d102be448146f24caf96d7b4a05401 (patch) | |
| tree | 3745518ea8f7e860b7a3fbc6178a9ee2c063aac7 /io_uring/io_uring.c | |
| parent | 8479063f1fbee201a8739130e816cc331b675838 (diff) | |
| download | linux-d6fef34ee4d102be448146f24caf96d7b4a05401.tar.xz | |
io_uring: fix off-by one bvec index
If the offset equals the bv_len of the first registered bvec, then the
request does not include any of that first bvec. Skip it so that drivers
don't have to deal with a zero length bvec, which was observed to break
NVMe's PRP list creation.
Cc: stable@vger.kernel.org
Fixes: bd11b3a391e3 ("io_uring: don't use iov_iter_advance() for fixed buffers")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Link: https://lore.kernel.org/r/20231120221831.2646460-1-kbusch@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/io_uring.c')
0 files changed, 0 insertions, 0 deletions