modules: better error messages when modules fail to load due to a sysfs problem.

This helps people when debugging problems like the ones that were in the
recent -mm releases.


Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 6 insertions, 1 deletions

diff --git a/kernel/params.c b/kernel/params.c
index effbaaedd7f3..4e57732fcfb4 100644
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -567,7 +567,12 @@ static void __init kernel_param_sysfs_setup(const char *name,
         kobject_set_name(&mk->kobj, name);
         kobject_init(&mk->kobj);
         ret = kobject_add(&mk->kobj);
-        BUG_ON(ret < 0);
+        if (ret) {
+                printk(KERN_ERR "Module '%s' failed to be added to sysfs, "
+                      "error number %d\n", name, ret);
+                printk(KERN_ERR "The system will be unstable now.\n");
+                return;
+        }
         param_sysfs_setup(mk, kparam, num_params, name_skip);
         kobject_uevent(&mk->kobj, KOBJ_ADD);
 }