modules: fix modparam async_probe request

commit 4355efbd80482a961cae849281a8ef866e53d55c upstream.

Commit f2411da746985 ("driver-core: add driver module
asynchronous probe support") added async probe support,
in two forms:

  * in-kernel driver specification annotation
  * generic async_probe module parameter (modprobe foo async_probe)

To support the generic kernel parameter parse_args() was
extended via commit ecc8617053e0 ("module: add extra
argument for parse_params() callback") however commit
failed to f2411da746985 failed to add the required argument.

This causes a crash then whenever async_probe generic
module parameter is used. This was overlooked when the
form in which in-kernel async probe support was reworked
a bit... Fix this as originally intended.

Cc: Hannes Reinecke <hare@suse.de>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> [minimized]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/kernel/module.c b/kernel/module.c
index 56d138cdaadb0697e1cc6c0b891287bff42b5cd8..14833e6d5e372d41a02e61334b9867461e245bf4 100644 (file)
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -3515,7 +3515,7 @@ static int load_module(struct load_info *info, const char __user *uargs,
 
        /* Module is ready to execute: parsing args may do that. */
        after_dashes = parse_args(mod->name, mod->args, mod->kp, mod->num_kp,
-                                 -32768, 32767, NULL,
+                                 -32768, 32767, mod,
                                  unknown_module_param_cb);
        if (IS_ERR(after_dashes)) {
                err = PTR_ERR(after_dashes);