From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Chung-Chi Lo" Subject: [BRIDGE] warning message when add an interface to bridge Date: Wed, 5 Dec 2007 10:44:17 +0800 Message-ID: <3f696b20712041844h7c049b71reda92edd7b8cb16e@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: netdev@vger.kernel.org Return-path: Received: from wa-out-1112.google.com ([209.85.146.180]:1753 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751442AbXLECoT (ORCPT ); Tue, 4 Dec 2007 21:44:19 -0500 Received: by wa-out-1112.google.com with SMTP id v27so6701205wah for ; Tue, 04 Dec 2007 18:44:17 -0800 (PST) Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-ID: My kernel is Linxu 2.6.22.1. SYSFS is off. When adding an interface to bridge, console will show WARNING message. If turn SYSFS to on, then the WARNING message is gone. Any suggestion how to debug this problem? Thanks. # ifconfig eth0 0.0.0.0 eth0: starting interface. # brctl addbr br0 # brctl addif br0 eth0 WARNING: at lib/kref.c:33 kref_get() Call Trace: [<80027844>] dump_stack+0x8/0x38 [<8011f348>] kref_get+0xdc/0xe4 [<8011ee20>] kobject_get+0x20/0x34 [<8011e910>] kobject_shadow_add+0x5c/0x170 [<8011ea34>] kobject_add+0x10/0x20 [<8020aac0>] br_add_if+0xb4/0x1b4 [<8020b354>] add_del_if+0x5c/0x118 [<8020bcc4>] br_dev_ioctl+0x6c/0x88 [<80182edc>] dev_ifsioc+0x334/0x3c0 [<80183184>] dev_ioctl+0x21c/0x2ec [<8016f76c>] sock_ioctl+0x130/0x2e4 [<800b3b2c>] do_ioctl+0x6c/0x84 [<800b3d40>] vfs_ioctl+0x80/0x248 [<800b3f58>] sys_ioctl+0x50/0x98 [<8002a8a8>] stack_done+0x20/0x3c