From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753416AbbGNIcZ (ORCPT ); Tue, 14 Jul 2015 04:32:25 -0400 Received: from szxga01-in.huawei.com ([58.251.152.64]:16296 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753385AbbGNIcW (ORCPT ); Tue, 14 Jul 2015 04:32:22 -0400 Message-ID: <55A4C8F1.4000104@huawei.com> Date: Tue, 14 Jul 2015 16:31:45 +0800 From: Xishi Qiu User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:12.0) Gecko/20120428 Thunderbird/12.0.1 MIME-Version: 1.0 To: , LKML , "guozhibin 00179312" , Xishi Qiu , , Subject: bad pages when up/down network cable Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Originating-IP: [10.177.25.179] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 1、the host directly link to the storage device，by intel ixgbe NIC; between them, no switch or router. 2、the nic of the storage device suddenly become unused and then OK after a little time, this happened frequency. 3、the host printk a lot of message like these: The kernel is SUSE 3.0.13, use slab, and the following log shows the page still have PG_slab when free_pages(). Does anyone have seen the problem? Jul 9 11:31:36 root kernel: [1042291.977565] BUG: Bad page state in process swapper pfn:00bf2 Jul 9 11:31:36 root kernel: [1042291.977568] page:ffffea0000029cf0 count:0 mapcount:0 mapping: (null) index:0x7f6d4f500 Jul 9 11:31:36 root kernel: [1042291.977571] page flags: 0x40000000000100(slab) // here is the reason Jul 9 11:31:36 root kernel: [1042291.977574] Pid: 0, comm: swapper Tainted: G B X 3.0.13-0.27-default #1 Jul 9 11:31:36 root kernel: [1042291.977577] Call Trace: Jul 9 11:31:36 root kernel: [1042291.977583] [] dump_trace+0x75/0x300 Jul 9 11:31:36 root kernel: [1042291.977639] [] dump_stack+0x69/0x6f Jul 9 11:31:36 root kernel: [1042291.977644] [] bad_page+0xb1/0x120 Jul 9 11:31:37 root kernel: [1042291.977649] [] free_pages_prepare+0xe6/0x110 Jul 9 11:31:37 root kernel: [1042291.977654] [] free_hot_cold_page+0x49/0x1f0 Jul 9 11:31:37 root kernel: [1042291.977660] [] skb_release_data+0xb4/0xe0 Jul 9 11:31:37 root kernel: [1042291.977665] [] __kfree_skb+0x9/0x90 Jul 9 11:31:37 root kernel: [1042291.977676] [] ixgbe_clean_tx_irq+0xa9/0x480 [ixgbe] Jul 9 11:31:37 root kernel: [1042291.977693] [] ixgbe_poll+0x4b/0x1a0 [ixgbe] Jul 9 11:31:37 root kernel: [1042291.977705] [] net_rx_action+0x10a/0x2c0 Jul 9 11:31:37 root kernel: [1042291.977711] [] __do_softirq+0xef/0x220 Jul 9 11:31:37 root kernel: [1042291.977716] [] call_softirq+0x1c/0x30 Jul 9 11:31:37 root kernel: [1042291.978974] DWARF2 unwinder stuck at call_softirq+0x1c/0x30 Thanks, Xishi Qiu