Commit 22634bc5 authored by Jens Axboe's avatar Jens Axboe
Browse files

io_uring: add IOPOLL and reserved field checks to IORING_OP_UNLINKAT 



We can't support IOPOLL with non-pollable request types, and we should
check for unused/reserved fields like we do for other request types.

Fixes: 14a1143b ("io_uring: add support for IORING_OP_UNLINKAT")
Cc: stable@vger.kernel.org
Reported-by: default avatarDmitry Kadashev <dkadashev@gmail.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent ed7eb259

fs/io_uring.c

+4 −0
Original line number Diff line number Diff line
@@ -3514,6 +3514,10 @@ static int io_unlinkat_prep(struct io_kiocb *req, 
	struct io_unlink *un = &req->unlink;

	const char __user *fname;



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

		return -EINVAL;

	if (sqe->ioprio || sqe->off || sqe->len || sqe->buf_index)

		return -EINVAL;

	if (unlikely(req->flags & REQ_F_FIXED_FILE))

		return -EBADF;