diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 0d62d21b91897d..0294e4f1887395 100644
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -758,9 +758,13 @@ static void ffs_user_copy_worker(struct work_struct *work)
 	bool kiocb_has_eventfd = io_data->kiocb->ki_flags & IOCB_EVENTFD;
 
 	if (io_data->read && ret > 0) {
+		mm_segment_t oldfs = get_fs();
+
+		set_fs(USER_DS);
 		use_mm(io_data->mm);
 		ret = ffs_copy_to_iter(io_data->buf, ret, &io_data->data);
 		unuse_mm(io_data->mm);
+		set_fs(oldfs);
 	}
 
 	io_data->kiocb->ki_complete(io_data->kiocb, ret, ret);