From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julian Anastasov Subject: Re: 3.5rc6 modprobe -r ip_vs oopses Date: Wed, 11 Jul 2012 23:59:06 +0300 (EEST) Message-ID: References: <20120711190722.GA31185@redhat.com> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: netdev@vger.kernel.org, wensong@linux-vs.org, horms@verge.net.au To: Dave Jones Return-path: Received: from ja.ssi.bg ([178.16.129.10]:45203 "EHLO ja.ssi.bg" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030191Ab2GKUwc (ORCPT ); Wed, 11 Jul 2012 16:52:32 -0400 In-Reply-To: <20120711190722.GA31185@redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: Hello, On Wed, 11 Jul 2012, Dave Jones wrote: > Triggered during modprobe -r ip_vs > (W taint flag came from something unrelated: 80211 trying >MAX_ORDER alloc failing). > > BUG: unable to handle kernel NULL pointer dereference at 0000000000000750 > IP: [] ip_vs_dst_event+0x18b/0x200 [ip_vs] > PGD ae993067 PUD 35cbb067 PMD 0 > Oops: 0000 [#1] SMP > CPU 2 > > Pid: 11534, comm: modprobe Tainted: G WC 3.5.0-rc6+ #78 > Dell Inc. Precision WorkStation 490 > /0DT031 > > RIP: 0010:[] [] ip_vs_dst_event+0x18b/0x200 [ip_vs] > RSP: 0000:ffff8800c92b7e28 EFLAGS: 00010246 > RAX: 0000000000000000 RBX: ffff880222fa22a0 RCX: 0000000000000006 > RDX: ffffffffa4caba50 RSI: 2222222222222222 RDI: 2222222222222222 > RBP: ffff8800c92b7e78 R08: 2222222222222222 R09: 2222222222222222 > R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff82bec540 > R13: ffffffff82bec638 R14: ffffffff82bec540 R15: ffffffffa4caba40 > FS: 00007f652be40700(0000) GS:ffff880226a00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > CR2: 0000000000000750 CR3: 0000000035ea4000 CR4: 00000000000007e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Process modprobe (pid: 11534, threadinfo ffff8800c92b6000, task ffff8801278d4900) > Stack: > 2222222222222222 0000000000000100 ffffffffa4caba50 ffffffffa4caa7a0 > ffffffffa4ca8750 ffff880222fa22a0 ffffffffa4ca8750 ffffffff82bec638 > ffffffff82bec540 0000000000000000 ffff8800c92b7eb8 ffffffff8156adcf > > Call Trace: > [] unregister_netdevice_notifier+0x7f/0x100 > [] ip_vs_control_cleanup+0x15/0x20 [ip_vs] > [] ip_vs_cleanup+0x41/0xc8f [ip_vs] > [] sys_delete_module+0x19c/0x2c0 > [] ? sysret_check+0x22/0x5d > [] ? trace_hardirqs_on_thunk+0x3a/0x3f > [] system_call_fastpath+0x16/0x1b > Code: 18 75 cd 4c 89 ef e8 35 48 00 00 eb c3 0f 1f 00 48 83 45 b8 01 48 81 > 7d b8 00 01 00 00 0f 85 cd fe ff ff 49 8b 84 24 c0 0c 00 00 <4c> 8b a8 50 07 > 00 00 48 05 50 07 00 00 49 39 c5 75 38 48 c7 c7 > > RIP > [] ip_vs_dst_event+0x18b/0x200 [ip_vs] > RSP > CR2: 0000000000000750 > ---[ end trace 83bf880b95bd63b8 ]--- > > That's here... > > list_for_each_entry(dest, &net_ipvs(net)->dest_trash, n_list) { > 226b: 4c 8b a8 50 07 00 00 mov 0x750(%rax),%r13 > Yes, I got the same oops 4 days ago, we already have a fix: http://archive.linuxvirtualserver.org/html/lvs-devel/2012-07/msg00002.html http://archive.linuxvirtualserver.org/html/lvs-devel/2012-07/msg00020.html Regards -- Julian Anastasov