From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934838AbaGXXNf (ORCPT ); Thu, 24 Jul 2014 19:13:35 -0400 Received: from mail2.candelatech.com ([208.74.158.173]:53479 "EHLO mail2.candelatech.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932130AbaGXXNe (ORCPT ); Thu, 24 Jul 2014 19:13:34 -0400 X-Greylist: delayed 316 seconds by postgrey-1.27 at vger.kernel.org; Thu, 24 Jul 2014 19:13:34 EDT Message-ID: <53D191E1.3080107@candelatech.com> Date: Thu, 24 Jul 2014 16:08:17 -0700 From: Ben Greear Organization: Candela Technologies User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7 MIME-Version: 1.0 To: Linux Kernel Mailing List Subject: Crashes in 3.14.13+ related to anon_vma_clone. X-Enigmail-Version: 1.5.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org A few of our systems are repeatedly crashing when upgraded from the 3.14.6+ to 3.14.13+ kernels. Both kernels have a fair bit of our out-of-tree patches, so could be our fault. But, in case this is a known problem...has anyone seen crashes like this below? Test case is using some ath9k APs and stations, but not certain that has much to do with the problem. BUG: unable to handle kernel paging request at 0000003f9840b000 IP: [] anon_vma_clone+0x88/0xf5 PGD be580067 PUD bab85067 PMD babd5067 PTE 80000000bebbd065 Oops: 0003 [#1] PREEMPT SMP Modules linked in: 8021q garp stp mrp llc fuse macvlan wanlink(O) pktgen ip6table_filter ip6_tables ebtable_nat ebtables coretemp hwmoo CPU: 1 PID: 1777 Comm: btserver Tainted: G C O 3.14.13+ #19 Hardware name: To be filled by O.E.M. To be filled by O.E.M./To be filled by O.E.M., BIOS 4.6.3 03/06/2012 task: ffff88020dcfb100 ti: ffff8800baa3e000 task.ti: ffff8800baa3e000 RIP: 0010:[] [] anon_vma_clone+0x88/0xf5 RSP: 0018:ffff8800baa3fda0 EFLAGS: 00010246 RAX: ffff8800ba8b8380 RBX: 0000003f9840b000 RCX: 000000000142b101 RDX: 0000000000000000 RSI: ffff8800ba8b8380 RDI: ffff8800ba8b8388 RBP: ffff8800baa3fdd0 R08: 0000000000015d60 R09: 0000003f9840b000 R10: 000000000000000b R11: 0000000000016338 R12: 0000000000000000 R13: ffff8800bc609450 R14: ffff8802212db980 R15: ffff8800ba8b8380 FS: 00007f0b70511740(0000) GS:ffff88022bc80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000003f9840b000 CR3: 00000000bab8f000 CR4: 00000000000007e0 Stack: ffff880221ba92a0 ffff88020dcfc980 ffff8800bc609450 ffff880221ba9228 ffff8800bc609450 ffff880221ba9228 ffff8800baa3fe08 ffffffff81169b7b ffff88020dcfc980 ffff880211db5f80 ffff880221ba9228 ffff8800bc609450 Call Trace: [] anon_vma_fork+0x26/0xec [] copy_process.part.28+0xf98/0x16ca [] do_fork+0xb4/0x211 [] ? __set_task_blocked+0x5e/0x64 [] ? _raw_spin_unlock_irq+0xc/0x1f [] SyS_clone+0x11/0x13 [] stub_clone+0x69/0x90 [] ? system_call_fastpath+0x1a/0x1f Code: 48 8b 3d 64 f1 b0 00 be d0 00 00 00 e8 9b 5e 01 00 48 85 c0 48 89 c3 74 62 45 31 e4 4d 8b 7e 08 4c 89 e7 49 8b 37 e8 fa ec ff ff RIP [] anon_vma_clone+0x88/0xf5 RSP CR2: 0000003f9840b000 -- Ben Greear Candela Technologies Inc http://www.candelatech.com