From: Jens Axboe <[email protected]> commit dddb3e26f6d88c5344d28cb5ff9d3d6fa05c4f7a upstream.
We already have the buffer selected, but we should set the iter list again. Cc: [email protected] # v5.7 Signed-off-by: Jens Axboe <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- fs/io_uring.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -2333,8 +2333,14 @@ static ssize_t __io_iov_buffer_select(st static ssize_t io_iov_buffer_select(struct io_kiocb *req, struct iovec *iov, bool needs_lock) { - if (req->flags & REQ_F_BUFFER_SELECTED) + if (req->flags & REQ_F_BUFFER_SELECTED) { + struct io_buffer *kbuf; + + kbuf = (struct io_buffer *) (unsigned long) req->rw.addr; + iov[0].iov_base = u64_to_user_ptr(kbuf->addr); + iov[0].iov_len = kbuf->len; return 0; + } if (!req->rw.len) return 0; else if (req->rw.len > 1)
