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io_uring/fs: remove sqe->rw_flags checking from LINKAT

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commit a52d4f657568d6458e873f74a9602e022afe666f upstream.

This is unionized with the actual link flags, so they can of course be
set and they will be evaluated further down. If not we fail any LINKAT
that has to set option flags.

Fixes: cf30da90bc3a ("io_uring: add support for IORING_OP_LINKAT")
Cc: stable@vger.kernel.org
Reported-by: Thomas Leonard <talex5@gmail.com>
Link: https://github.com/axboe/liburing/issues/955
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jens Axboe 2023-10-04 08:43:13 -06:00 committed by Greg Kroah-Hartman
parent 111fe77cb1
commit a2b1d486fb
1 changed files with 1 additions and 1 deletions
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2
io_uring/io_uring.c
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@ -4038,7 +4038,7 @@ static int io_linkat_prep(struct io_kiocb *req,
if (unlikely(req->ctx->flags & IORING_SETUP_IOPOLL))
return -EINVAL;
if (sqe->ioprio || sqe->rw_flags || sqe->buf_index || sqe->splice_fd_in)
if (sqe->ioprio || sqe->buf_index || sqe->splice_fd_in)
return -EINVAL;
if (unlikely(req->flags & REQ_F_FIXED_FILE))
return -EBADF;