From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753021Ab3LPJGw (ORCPT ); Mon, 16 Dec 2013 04:06:52 -0500 Received: from mail-pd0-f174.google.com ([209.85.192.174]:61891 "EHLO mail-pd0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752905Ab3LPJGr (ORCPT ); Mon, 16 Dec 2013 04:06:47 -0500 Date: Mon, 16 Dec 2013 12:04:12 +0300 From: Sergey Senozhatsky To: "David S. Miller" Cc: James Morris , Hideaki YOSHIFUJI , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [linux-next] sk->sk_dst_lock inconsistent lock state Message-ID: <20131216090412.GA2230@swordfish.minsk.epam.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.22 (2013-10-16) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, 3.13.0-rc4-next-20131216 [ 114.923321] ================================= [ 114.923324] [ INFO: inconsistent lock state ] [ 114.923330] 3.13.0-rc4-next-20131216-dbg-dirty #59 Not tainted [ 114.923333] --------------------------------- [ 114.923337] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 114.923342] swapper/0/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 114.923346] (&(&sk->sk_dst_lock)->rlock){+.?...}, at: [] __udp4_lib_rcv+0x537/0x765 [ 114.923363] {SOFTIRQ-ON-W} state was registered at: [ 114.923367] [] __lock_acquire+0xa49/0x1b03 [ 114.923376] [] lock_acquire+0x6f/0x8e [ 114.923381] [] _raw_spin_lock+0x33/0x3f [ 114.923390] [] inet_bind+0x18b/0x216 [ 114.923397] [] SyS_bind+0x7d/0xaa [ 114.923405] [] tracesys+0xd4/0xd9 [ 114.923412] irq event stamp: 1386010 [ 114.923415] hardirqs last enabled at (1386010): [] kmem_cache_free+0xf0/0x17d [ 114.923424] hardirqs last disabled at (1386009): [] kmem_cache_free+0xc4/0x17d [ 114.923431] softirqs last enabled at (1385998): [] _local_bh_enable+0x3e/0x40 [ 114.923440] softirqs last disabled at (1385999): [] irq_exit+0x52/0xe2 [ 114.923446] other info that might help us debug this: [ 114.923450] Possible unsafe locking scenario: [ 114.923454] CPU0 [ 114.923456] ---- [ 114.923459] lock(&(&sk->sk_dst_lock)->rlock); [ 114.923464] [ 114.923467] lock(&(&sk->sk_dst_lock)->rlock); [ 114.923472] *** DEADLOCK *** [ 114.923478] 2 locks held by swapper/0/0: [ 114.923480] #0: (rcu_read_lock){.+.+..}, at: [] __netif_receive_skb_core+0x1c1/0x9b0 [ 114.923494] #1: (rcu_read_lock){.+.+..}, at: [] ip_local_deliver+0x54/0x34b [ 114.923509] stack backtrace: [ 114.923516] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.13.0-rc4-next-20131216-dbg-dirty #59 [ 114.923520] Hardware name: Acer Aspire 5741G /Aspire 5741G , BIOS V1.20 02/08/2011 [ 114.923524] 0000000000000000 ffff880157c03a58 ffffffff813e57ff ffffffff81612490 [ 114.923533] ffff880157c03aa8 ffffffff813e2e0c 0000000000000001 ffff880100000001 [ 114.923542] ffffffff00000000 ffffffff81612b70 0000000000000004 0000000000000006 [ 114.923551] Call Trace: [ 114.923554] [] dump_stack+0x4e/0x7a [ 114.923566] [] print_usage_bug+0x2b1/0x31c [ 114.923574] [] ? print_irq_inversion_bug+0x234/0x234 [ 114.923580] [] mark_lock+0x341/0x698 [ 114.923586] [] __lock_acquire+0x9d7/0x1b03 [ 114.923594] [] ? check_leaf.isra.10+0x20d/0x20d [ 114.923601] [] lock_acquire+0x6f/0x8e [ 114.923608] [] ? __udp4_lib_rcv+0x537/0x765 [ 114.923614] [] _raw_spin_lock+0x33/0x3f [ 114.923620] [] ? __udp4_lib_rcv+0x537/0x765 [ 114.923627] [] __udp4_lib_rcv+0x537/0x765 [ 114.923633] [] udp_rcv+0x15/0x17 [ 114.923640] [] ip_local_deliver+0x1d4/0x34b [ 114.923646] [] ? ip_local_deliver+0x54/0x34b [ 114.923653] [] ip_rcv+0x613/0x6a3 [ 114.923659] [] __netif_receive_skb_core+0x910/0x9b0 [ 114.923665] [] ? __netif_receive_skb_core+0x1c1/0x9b0 [ 114.923674] [] ? read_tsc+0x9/0x1b [ 114.923680] [] __netif_receive_skb+0x13/0x55 [ 114.923686] [] netif_receive_skb+0xd5/0x1b8 [ 114.923693] [] napi_gro_receive+0x26/0x66 [ 114.923705] [] tg3_poll_work+0x878/0xc80 [tg3] [ 114.923716] [] tg3_poll+0x19f/0x352 [tg3] [ 114.923723] [] net_rx_action+0xec/0x1c0 [ 114.923729] [] __do_softirq+0xfe/0x254 [ 114.923735] [] irq_exit+0x52/0xe2 [ 114.923743] [] do_IRQ+0x97/0xae [ 114.923751] [] common_interrupt+0x72/0x72 [ 114.923754] [] ? cpuidle_enter_state+0x54/0xb0 [ 114.923767] [] cpuidle_idle_call+0xd3/0x11c [ 114.923774] [] arch_cpu_idle+0x9/0x23 [ 114.923781] [] cpu_startup_entry+0xdf/0x164 [ 114.923788] [] rest_init+0x12d/0x131 [ 114.923794] [] ? csum_partial_copy_generic+0x16c/0x16c [ 114.923802] [] start_kernel+0x3e2/0x3ee [ 114.923808] [] ? repair_env_string+0x58/0x58 [ 114.923816] [] ? early_idt_handlers+0x120/0x120 [ 114.923823] [] x86_64_start_reservations+0x2a/0x2c [ 114.923830] [] x86_64_start_kernel+0xee/0xfb -ss