From mboxrd@z Thu Jan 1 00:00:00 1970 From: Valdis.Kletnieks@vt.edu Subject: mmotm 2010-04-28 - RCU whinges Date: Sun, 02 May 2010 13:46:34 -0400 Message-ID: <5702.1272822394@localhost> References: <201004290021.o3T0L04Y028017@imap1.linux-foundation.org> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1272822394_4025P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, netfilter-devel@vger.kernel.org, netdev@vger.kernel.org To: Andrew Morton , Peter Zijlstra , Patrick McHardy , "David S. Miller" Return-path: In-Reply-To: Your message of "Wed, 28 Apr 2010 16:53:32 PDT." <201004290021.o3T0L04Y028017@imap1.linux-foundation.org> Sender: linux-kernel-owner@vger.kernel.org List-Id: netfilter-devel.vger.kernel.org --==_Exmh_1272822394_4025P Content-Type: text/plain; charset=us-ascii On Wed, 28 Apr 2010 16:53:32 PDT, akpm@linux-foundation.org said: > The mm-of-the-moment snapshot 2010-04-28-16-53 has been uploaded to > > http://userweb.kernel.org/~akpm/mmotm/ I thought we swatted all these, hit another one... [ 9.131490] ctnetlink v0.93: registering with nfnetlink. [ 9.131535] [ 9.131535] =================================================== [ 9.131704] [ INFO: suspicious rcu_dereference_check() usage. ] [ 9.131794] --------------------------------------------------- [ 9.131883] net/netfilter/nf_conntrack_ecache.c:88 invoked rcu_dereference_check() without protection! [ 9.131977] [ 9.131977] other info that might help us debug this: [ 9.131978] [ 9.132218] [ 9.132219] rcu_scheduler_active = 1, debug_locks = 0 [ 9.132434] 1 lock held by swapper/1: [ 9.132519] #0: (nf_ct_ecache_mutex){+.+...}, at: [] nf_conntrack_register_notifier+0x1a/0x75 [ 9.132938] [ 9.132939] stack backtrace: [ 9.133129] Pid: 1, comm: swapper Tainted: G W 2.6.34-rc5-mmotm0428 #1 [ 9.133220] Call Trace: [ 9.133319] [] lockdep_rcu_dereference+0xaa/0xb2 [ 9.133410] [] nf_conntrack_register_notifier+0x3d/0x75 [ 9.133521] [] ctnetlink_init+0x71/0xd5 [ 9.133627] [] ? ctnetlink_init+0x0/0xd5 [ 9.133735] [] do_one_initcall+0x59/0x14e [ 9.133843] [] kernel_init+0x144/0x1ce [ 9.133949] [] kernel_thread_helper+0x4/0x10 [ 9.134060] [] ? restore_args+0x0/0x30 [ 9.134196] [] ? kernel_init+0x0/0x1ce [ 9.134328] [] ? kernel_thread_helper+0x0/0x10 [ 9.134530] ip_tables: (C) 2000-2006 Netfilter Core Team [ 9.134655] TCP bic registered --==_Exmh_1272822394_4025P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Exmh version 2.5 07/13/2001 iD8DBQFL3bp6cC3lWbTT17ARAlQ9AKCPdEUkjgTxgN/FDhI2IsgMQc4SQQCghz57 bPOuH/bz2IQsitympyBwbWs= =yp5X -----END PGP SIGNATURE----- --==_Exmh_1272822394_4025P--