From: Keith Busch <kbusch@xxxxxxxxxx>
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.
Signed-off-by: Keith Busch <kbusch@xxxxxxxxxx>
---
io_uring/rsrc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/io_uring/rsrc.c b/io_uring/rsrc.c
index 7034be555334d..f521c5965a933 100644
--- a/io_uring/rsrc.c
+++ b/io_uring/rsrc.c
@@ -1258,7 +1258,7 @@ int io_import_fixed(int ddir, struct iov_iter *iter,
*/
const struct bio_vec *bvec = imu->bvec;
- if (offset <= bvec->bv_len) {
+ if (offset < bvec->bv_len) {
/*
* Note, huge pages buffers consists of one large
* bvec entry and should always go this way. The other
--
2.34.1
