Commit 5a1e99b6 authored by Jens Axboe's avatar Jens Axboe
Browse files

io_uring: check reserved fields for recv/recvmsg 



We should check unused fields for non-zero and -EINVAL if they are set,
making it consistent with other opcodes.

Fixes: aa1fa28f ("io_uring: add support for recvmsg()")
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 588faa1e

fs/io_uring.c

+2 −0
Original line number Diff line number Diff line
@@ -5420,6 +5420,8 @@ static int io_recvmsg_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe) 


	if (unlikely(req->ctx->flags & IORING_SETUP_IOPOLL))

		return -EINVAL;

	if (unlikely(sqe->addr2 || sqe->file_index))

		return -EINVAL;



	sr->umsg = u64_to_user_ptr(READ_ONCE(sqe->addr));

	sr->len = READ_ONCE(sqe->len);