Orangefs: fix sloppy cleanups of debugfs and sysfs init failures.

Signed-off-by: Mike Marshall <hubcap@omnibond.com>

fs/orangefs/orangefs-debugfs.c

@@ -101,30 +101,33 @@ int orangefs_debugfs_init(void)
 	int rc = -ENOMEM;
 
 	debug_dir = debugfs_create_dir("orangefs", NULL);
-	if (!debug_dir)
+	if (!debug_dir) {
+		pr_info("%s: debugfs_create_dir failed.\n", __func__);
 		goto out;
+	}
 
 	help_file_dentry = debugfs_create_file(ORANGEFS_KMOD_DEBUG_HELP_FILE,
 				  0444,
 				  debug_dir,
 				  debug_help_string,
 				  &debug_help_fops);
-	if (!help_file_dentry)
+	if (!help_file_dentry) {
+		pr_info("%s: debugfs_create_file failed.\n", __func__);
 		goto out;
+	}
 
 	orangefs_debug_disabled = 0;
 	rc = 0;
 
 out:
-	if (rc)
-		orangefs_debugfs_cleanup();
 
 	return rc;
 }
 
 void orangefs_debugfs_cleanup(void)
 {
-	debugfs_remove_recursive(debug_dir);
+	if (debug_dir)
+		debugfs_remove_recursive(debug_dir);
 }
 
 /* open ORANGEFS_KMOD_DEBUG_HELP_FILE */
@@ -198,7 +201,6 @@ static int help_show(struct seq_file *m, void *v)
  */
 int orangefs_kernel_debug_init(void)
 {
-
 	int rc = -ENOMEM;
 	struct dentry *ret;
 	char *k_buffer = NULL;
@@ -232,8 +234,6 @@ int orangefs_kernel_debug_init(void)
 	rc = 0;
 
 out:
-	if (rc)
-		orangefs_debugfs_cleanup();
 
 	gossip_debug(GOSSIP_DEBUGFS_DEBUG, "%s: rc:%d:\n", __func__, rc);
 	return rc;
@@ -268,7 +268,7 @@ int orangefs_client_debug_init(void)
 						  c_buffer,
 						  &kernel_debug_fops);
 	if (!client_debug_dentry) {
-		pr_info("%s: failed to create %s.\n",
+		pr_info("%s: failed to create updated %s.\n",
 			__func__,
 			ORANGEFS_CLIENT_DEBUG_FILE);
 		goto out;
@@ -277,8 +277,6 @@ int orangefs_client_debug_init(void)
 	rc = 0;
 
 out:
-	if (rc)
-		orangefs_debugfs_cleanup();
 
 	gossip_debug(GOSSIP_DEBUGFS_DEBUG, "%s: rc:%d:\n", __func__, rc);
 	return rc;

fs/orangefs/orangefs-mod.c

@@ -185,22 +185,39 @@ static int __init orangefs_init(void)
 	 */
 	ret = orangefs_prepare_debugfs_help_string(1);
 	if (ret)
-		goto out;
+		goto prepare_helpstring_failed;
+
+	ret = orangefs_debugfs_init();
+	if (ret)
+		goto debugfs_init_failed;
 
-	orangefs_debugfs_init();
-	orangefs_kernel_debug_init();
-	orangefs_sysfs_init();
+	ret = orangefs_kernel_debug_init();
+	if (ret)
+		goto kernel_debug_init_failed;
+
+	ret = orangefs_sysfs_init();
+	if (ret)
+		goto sysfs_init_failed;
 
 	ret = register_filesystem(&orangefs_fs_type);
 	if (ret == 0) {
 		pr_info("orangefs: module version %s loaded\n", ORANGEFS_VERSION);
-		return 0;
+		ret = 0;
+		goto out;
 	}
 
-	orangefs_debugfs_cleanup();
 	orangefs_sysfs_exit();
 	fsid_key_table_finalize();
 
+sysfs_init_failed:
+
+kernel_debug_init_failed:
+
+debugfs_init_failed:
+	orangefs_debugfs_cleanup();
+
+prepare_helpstring_failed:
+
 cleanup_progress_table:
 	kfree(htable_ops_in_progress);
 

fs/orangefs/orangefs-sysfs.c

@@ -1611,27 +1611,22 @@ static struct stats_orangefs_obj *stats_orangefs_obj;
 
 int orangefs_sysfs_init(void)
 {
-	int rc;
+	int rc = -EINVAL;
 
 	gossip_debug(GOSSIP_SYSFS_DEBUG, "orangefs_sysfs_init: start\n");
 
 	/* create /sys/fs/orangefs. */
 	orangefs_obj = kzalloc(sizeof(*orangefs_obj), GFP_KERNEL);
-	if (!orangefs_obj) {
-		rc = -EINVAL;
+	if (!orangefs_obj)
 		goto out;
-	}
 
 	rc = kobject_init_and_add(&orangefs_obj->kobj,
 				  &orangefs_ktype,
 				  fs_kobj,
 				  ORANGEFS_KOBJ_ID);
 
-	if (rc) {
-		kobject_put(&orangefs_obj->kobj);
-		rc = -EINVAL;
-		goto out;
-	}
+	if (rc)
+		goto ofs_obj_bail;
 
 	kobject_uevent(&orangefs_obj->kobj, KOBJ_ADD);
 
@@ -1639,7 +1634,7 @@ int orangefs_sysfs_init(void)
 	acache_orangefs_obj = kzalloc(sizeof(*acache_orangefs_obj), GFP_KERNEL);
 	if (!acache_orangefs_obj) {
 		rc = -EINVAL;
-		goto out;
+		goto ofs_obj_bail;
 	}
 
 	rc = kobject_init_and_add(&acache_orangefs_obj->kobj,
@@ -1647,11 +1642,8 @@ int orangefs_sysfs_init(void)
 				  &orangefs_obj->kobj,
 				  ACACHE_KOBJ_ID);
 
-	if (rc) {
-		kobject_put(&acache_orangefs_obj->kobj);
-		rc = -EINVAL;
-		goto out;
-	}
+	if (rc)
+		goto acache_obj_bail;
 
 	kobject_uevent(&acache_orangefs_obj->kobj, KOBJ_ADD);
 
@@ -1660,18 +1652,15 @@ int orangefs_sysfs_init(void)
 		kzalloc(sizeof(*capcache_orangefs_obj), GFP_KERNEL);
 	if (!capcache_orangefs_obj) {
 		rc = -EINVAL;
-		goto out;
+		goto acache_obj_bail;
 	}
 
 	rc = kobject_init_and_add(&capcache_orangefs_obj->kobj,
 				  &capcache_orangefs_ktype,
 				  &orangefs_obj->kobj,
 				  CAPCACHE_KOBJ_ID);
-	if (rc) {
-		kobject_put(&capcache_orangefs_obj->kobj);
-		rc = -EINVAL;
-		goto out;
-	}
+	if (rc)
+		goto capcache_obj_bail;
 
 	kobject_uevent(&capcache_orangefs_obj->kobj, KOBJ_ADD);
 
@@ -1680,18 +1669,15 @@ int orangefs_sysfs_init(void)
 		kzalloc(sizeof(*ccache_orangefs_obj), GFP_KERNEL);
 	if (!ccache_orangefs_obj) {
 		rc = -EINVAL;
-		goto out;
+		goto capcache_obj_bail;
 	}
 
 	rc = kobject_init_and_add(&ccache_orangefs_obj->kobj,
 				  &ccache_orangefs_ktype,
 				  &orangefs_obj->kobj,
 				  CCACHE_KOBJ_ID);
-	if (rc) {
-		kobject_put(&ccache_orangefs_obj->kobj);
-		rc = -EINVAL;
-		goto out;
-	}
+	if (rc)
+		goto ccache_obj_bail;
 
 	kobject_uevent(&ccache_orangefs_obj->kobj, KOBJ_ADD);
 
@@ -1699,7 +1685,7 @@ int orangefs_sysfs_init(void)
 	ncache_orangefs_obj = kzalloc(sizeof(*ncache_orangefs_obj), GFP_KERNEL);
 	if (!ncache_orangefs_obj) {
 		rc = -EINVAL;
-		goto out;
+		goto ccache_obj_bail;
 	}
 
 	rc = kobject_init_and_add(&ncache_orangefs_obj->kobj,
@@ -1707,11 +1693,8 @@ int orangefs_sysfs_init(void)
 				  &orangefs_obj->kobj,
 				  NCACHE_KOBJ_ID);
 
-	if (rc) {
-		kobject_put(&ncache_orangefs_obj->kobj);
-		rc = -EINVAL;
-		goto out;
-	}
+	if (rc)
+		goto ncache_obj_bail;
 
 	kobject_uevent(&ncache_orangefs_obj->kobj, KOBJ_ADD);
 
@@ -1719,7 +1702,7 @@ int orangefs_sysfs_init(void)
 	pc_orangefs_obj = kzalloc(sizeof(*pc_orangefs_obj), GFP_KERNEL);
 	if (!pc_orangefs_obj) {
 		rc = -EINVAL;
-		goto out;
+		goto ncache_obj_bail;
 	}
 
 	rc = kobject_init_and_add(&pc_orangefs_obj->kobj,
@@ -1727,11 +1710,8 @@ int orangefs_sysfs_init(void)
 				  &orangefs_obj->kobj,
 				  "perf_counters");
 
-	if (rc) {
-		kobject_put(&pc_orangefs_obj->kobj);
-		rc = -EINVAL;
-		goto out;
-	}
+	if (rc)
+		goto pc_obj_bail;
 
 	kobject_uevent(&pc_orangefs_obj->kobj, KOBJ_ADD);
 
@@ -1739,7 +1719,7 @@ int orangefs_sysfs_init(void)
 	stats_orangefs_obj = kzalloc(sizeof(*stats_orangefs_obj), GFP_KERNEL);
 	if (!stats_orangefs_obj) {
 		rc = -EINVAL;
-		goto out;
+		goto pc_obj_bail;
 	}
 
 	rc = kobject_init_and_add(&stats_orangefs_obj->kobj,
@@ -1747,13 +1727,32 @@ int orangefs_sysfs_init(void)
 				  &orangefs_obj->kobj,
 				  STATS_KOBJ_ID);
 
-	if (rc) {
-		kobject_put(&stats_orangefs_obj->kobj);
-		rc = -EINVAL;
-		goto out;
-	}
+	if (rc)
+		goto stats_obj_bail;
 
 	kobject_uevent(&stats_orangefs_obj->kobj, KOBJ_ADD);
+	goto out;
+
+stats_obj_bail:
+		kobject_put(&stats_orangefs_obj->kobj);
+
+pc_obj_bail:
+		kobject_put(&pc_orangefs_obj->kobj);
+
+ncache_obj_bail:
+		kobject_put(&ncache_orangefs_obj->kobj);
+
+ccache_obj_bail:
+		kobject_put(&ccache_orangefs_obj->kobj);
+
+capcache_obj_bail:
+		kobject_put(&capcache_orangefs_obj->kobj);
+
+acache_obj_bail:
+		kobject_put(&acache_orangefs_obj->kobj);
+
+ofs_obj_bail:
+		kobject_put(&orangefs_obj->kobj);
 out:
 	return rc;
 }