diff options
| author | Jens Axboe <axboe@kernel.dk> | 2021-06-23 09:07:45 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-06-30 14:15:39 -0600 |
| commit | 22634bc5620d29765e5199c7b230a372c7ddcda2 (patch) | |
| tree | a466f7acfb186f4da5a64a8a93a246dcd9051712 /fs | |
| parent | ed7eb2592286ead7d3bfdf8adf65e65392167cc4 (diff) | |
| download | linux-22634bc5620d29765e5199c7b230a372c7ddcda2.tar.bz2 | |
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: 14a1143b68ee ("io_uring: add support for IORING_OP_UNLINKAT")
Cc: stable@vger.kernel.org
Reported-by: Dmitry Kadashev <dkadashev@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/io_uring.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 02eda0575c56..a0bb3cc7d3bb 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -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; |