From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753022AbYAMPwL (ORCPT ); Sun, 13 Jan 2008 10:52:11 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751835AbYAMPv5 (ORCPT ); Sun, 13 Jan 2008 10:51:57 -0500 Received: from usermail.globalproof.net ([194.146.153.18]:33480 "EHLO usermail.globalproof.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751703AbYAMPv4 (ORCPT ); Sun, 13 Jan 2008 10:51:56 -0500 From: "Denys Fedoryshchenko" To: linux-kernel@vger.kernel.org Subject: possible recursive locking, 2.6.24-rc7 Date: Sun, 13 Jan 2008 17:51:42 +0200 Message-Id: <20080113155142.M6056@visp.net.lb> X-Mailer: OpenWebMail 2.52 20060502 X-OriginatingIP: 195.69.208.251 (denys@visp.net.lb) MIME-Version: 1.0 Content-Type: text/plain; charset=koi8-r Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, got in dmesg Not sure where to send (there is TCP), so sending netdev@ and kernel@ [159859.491752] [159859.491755] ============================================= [159859.492021] [ INFO: possible recursive locking detected ] [159859.492156] 2.6.24-rc7-devel #2 [159859.492284] --------------------------------------------- [159859.492418] swapper/0 is trying to acquire lock: [159859.492550] (&q->lock){++..}, at: [] __wake_up+0x15/0x42 [159859.492883] [159859.492884] but task is already holding lock: [159859.493140] (&q->lock){++..}, at: [] __wake_up+0x15/0x42 [159859.493466] [159859.493467] other info that might help us debug this: [159859.493726] 5 locks held by swapper/0: [159859.495687] #0: (rcu_read_lock){..--}, at: [] netif_receive_skb+ 0x9c/0x3a7 [159859.496141] #1: (rcu_read_lock){..--}, at: [] ip_local_deliver_f inish+0x30/0x18d [159859.496604] #2: (slock-AF_INET/1){-+..}, at: [] tcp_v4_rcv+0x426 /0x812 [159859.497104] #3: (clock-AF_INET){-.-?}, at: [] sock_def_readable+ 0x18/0x6e [159859.497555] #4: (&q->lock){++..}, at: [] __wake_up+0x15/0x42 [159859.497931] [159859.497932] stack backtrace: [159859.498185] Pid: 0, comm: swapper Not tainted 2.6.24-rc7-devel #2 [159859.498320] [] show_trace_log_lvl+0x1a/0x2f [159859.498505] [] show_trace+0x12/0x14 [159859.498690] [] dump_stack+0x6c/0x72 [159859.498872] [] __lock_acquire+0x172/0xb8c [159859.499057] [] lock_acquire+0x5f/0x78 [159859.499239] [] _spin_lock_irqsave+0x34/0x44 [159859.499423] [] __wake_up+0x15/0x42 [159859.499604] [] ep_poll_safewake+0x8e/0xbf [159859.499787] [] ep_poll_callback+0x9f/0xac [159859.499970] [] __wake_up_common+0x32/0x5c [159859.500154] [] __wake_up+0x31/0x42 [159859.500335] [] sock_def_readable+0x42/0x6e [159859.500518] [] tcp_rcv_established+0x3bc/0x643 [159859.500704] [] tcp_v4_do_rcv+0x2f/0x325 [159859.500887] [] tcp_v4_rcv+0x7c9/0x812 [159859.501069] [] ip_local_deliver_finish+0x107/0x18d [159859.501255] [] ip_local_deliver+0x72/0x7c [159859.501438] [] ip_rcv_finish+0x2cf/0x2ee [159859.501623] [] ip_rcv+0x211/0x23b [159859.501805] [] netif_receive_skb+0x350/0x3a7 [159859.501989] [] bnx2_poll+0x975/0xb45 [bnx2] [159859.502177] [] net_rx_action+0x6c/0x116 [159859.502360] [] __do_softirq+0x6f/0xe9 [159859.502543] [] do_softirq+0x3a/0x52 [159859.502728] [] irq_exit+0x47/0x7b [159859.502911] [] do_IRQ+0x81/0x96 [159859.503098] [] common_interrupt+0x2e/0x34 [159859.503288] [] mwait_idle+0x12/0x14 [159859.503476] [] cpu_idle+0x7b/0x95 [159859.503662] [] rest_init+0x49/0x4b [159859.503844] [] start_kernel+0x2f9/0x301 [159859.504030] [<00000000>] 0x0 [159859.504210] ======================= -- Denys Fedoryshchenko Technical Manager Virtual ISP S.A.L.