io_uring: check for valid register opcode earlier

[platform/kernel/linux-starfive.git] / io_uring / splice.c

diff --git a/io_uring/splice.c b/io_uring/splice.c
index b013ba3..53e4232 100644 (file)
--- a/io_uring/splice.c
+++ b/io_uring/splice.c
@@ -26,7 +26,7 @@ struct io_splice {
 static int __io_splice_prep(struct io_kiocb *req,
                            const struct io_uring_sqe *sqe)
 {
-       struct io_splice *sp = io_kiocb_to_cmd(req);
+       struct io_splice *sp = io_kiocb_to_cmd(req, struct io_splice);
        unsigned int valid_flags = SPLICE_F_FD_IN_FIXED | SPLICE_F_ALL;
 
        sp->len = READ_ONCE(sqe->len);
@@ -46,7 +46,7 @@ int io_tee_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 
 int io_tee(struct io_kiocb *req, unsigned int issue_flags)
 {
-       struct io_splice *sp = io_kiocb_to_cmd(req);
+       struct io_splice *sp = io_kiocb_to_cmd(req, struct io_splice);
        struct file *out = sp->file_out;
        unsigned int flags = sp->flags & ~SPLICE_F_FD_IN_FIXED;
        struct file *in;
@@ -78,7 +78,7 @@ done:
 
 int io_splice_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 {
-       struct io_splice *sp = io_kiocb_to_cmd(req);
+       struct io_splice *sp = io_kiocb_to_cmd(req, struct io_splice);
 
        sp->off_in = READ_ONCE(sqe->splice_off_in);
        sp->off_out = READ_ONCE(sqe->off);
@@ -87,7 +87,7 @@ int io_splice_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 
 int io_splice(struct io_kiocb *req, unsigned int issue_flags)
 {
-       struct io_splice *sp = io_kiocb_to_cmd(req);
+       struct io_splice *sp = io_kiocb_to_cmd(req, struct io_splice);
        struct file *out = sp->file_out;
        unsigned int flags = sp->flags & ~SPLICE_F_FD_IN_FIXED;
        loff_t *poff_in, *poff_out;