Commit a43e236f authored by Ming Lei's avatar Ming Lei Committed by Jens Axboe
Browse files

io_uring/uring_cmd: fix buffer index retrieval 



Add back buffer index retrieval for IORING_URING_CMD_FIXED.

Reported-by: default avatarGuangwu Zhang <guazhang@redhat.com>
Cc: Jeff Moyer <jmoyer@redhat.com>
Fixes: b54a1404 ("io_uring/rsrc: add io_rsrc_node_lookup() helper")
Signed-off-by: default avatarMing Lei <ming.lei@redhat.com>
Reviewed-by: default avatarKanchan Joshi <joshi.k@samsung.com>
Reviewed-by: default avatarAnuj Gupta <anuj20.g@samsung.com>
Tested-by: default avatarGuangwu Zhang <guazhang@redhat.com>
Link: https://lore.kernel.org/r/20241111101318.1387557-1-ming.lei@redhat.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 039c878d

io_uring/uring_cmd.c

+2 −1
Original line number Diff line number Diff line
@@ -210,8 +210,9 @@ int io_uring_cmd_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) 
	if (ioucmd->flags & IORING_URING_CMD_FIXED) {

		struct io_ring_ctx *ctx = req->ctx;

		struct io_rsrc_node *node;

		u16 index = READ_ONCE(sqe->buf_index);



		node = io_rsrc_node_lookup(&ctx->buf_table, req->buf_index);

		node = io_rsrc_node_lookup(&ctx->buf_table, index);

		if (unlikely(!node))

			return -EFAULT;

		/*