From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751926AbaILQTr (ORCPT ); Fri, 12 Sep 2014 12:19:47 -0400 Received: from mout.gmx.net ([212.227.17.22]:50615 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751733AbaILQTo (ORCPT ); Fri, 12 Sep 2014 12:19:44 -0400 Message-ID: <54131D1D.1030904@gmx.de> Date: Fri, 12 Sep 2014 18:19:41 +0200 From: =?UTF-8?B?VG9yYWxmIEbDtnJzdGVy?= User-Agent: Mozilla/5.0 (X11; Linux i686; rv:31.0) Gecko/20100101 Thunderbird/31.1.1 MIME-Version: 1.0 To: cgroups@vger.kernel.org CC: Linux Kernel Subject: cgroups/netfilter : kernel NULL pointer BUG at 00000038 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K0:9x0f9UjwlnSqFtQLhA8wprzO/r67pV5E2WoJQz7ZKqu9WQsunaB dr5i6pb2ooGdCAA2Zag5h4EO3Nv6Ck7YBRXuXuxj3c9YpYJxN2HARZPnT544SS0emkoMOYI LeqxymrcH30QsmQceWK9xKjJGwoVw4oYbnw5Ti+6K+Vsua7y65170JUFd0pWthmgqXd9QAV nMq7+utZcBBhhhK3/41oQ== X-UI-Out-Filterresults: notjunk:1; Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Today I observed within a 32 bit KVM machine (stable Gentoo x86 Linux) the following : Sep 12 18:14:37 n22kvmclone kernel: [ 37.964900] ip_tables: (C) 2000-2006 Netfilter Core Team Sep 12 18:14:38 n22kvmclone kernel: [ 38.412110] nf_conntrack version 0.5.0 (16384 buckets, 65536 max) Sep 12 18:14:38 n22kvmclone kernel: [ 39.032978] ------------[ cut here ]------------ Sep 12 18:14:38 n22kvmclone kernel: [ 39.033009] WARNING: CPU: 0 PID: 1632 at kernel/cgroup.c:1034 cgroup_get+0x91/0xb0() Sep 12 18:14:38 n22kvmclone kernel: [ 39.033013] Modules linked in: xt_NFLOG xt_limit ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_recent xt_conntrack nf_conntrack iptable_filter ip_tables af_packet dm_crypt dm_mod usbhid mousedev uhci_hcd ehci_pci microcode psmouse ehci_hcd evdev usbcore atkbd usb_common virtio_console processor button Sep 12 18:14:38 n22kvmclone kernel: [ 39.033104] CPU: 0 PID: 1632 Comm: runscript.sh Not tainted 3.17.0-rc4 #18 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033107] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.7.5-0-ge51488c-20140602_164612-nilsson.home.kraxel.org 04/01/2014 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033110] 00000000 00000000 f4b33e54 cc04b292 00000000 f4b33e84 cbc46d64 cc18f11c Sep 12 18:14:38 n22kvmclone kernel: [ 39.033119] 00000000 00000660 cc19bcc5 0000040a cbcb5841 cbcb5841 f56de400 f4963688 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033128] f4983cb8 f4b33e94 cbc46da2 00000009 00000000 f4b33eb0 cbcb5841 cbe59246 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033137] Call Trace: Sep 12 18:14:38 n22kvmclone kernel: [ 39.033163] [] dump_stack+0x41/0x52 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033179] [] warn_slowpath_common+0x84/0xa0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033186] [] ? cgroup_get+0x91/0xb0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033191] [] ? cgroup_get+0x91/0xb0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033197] [] warn_slowpath_null+0x22/0x30 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033202] [] cgroup_get+0x91/0xb0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033223] [] ? kstrtoll+0x16/0x70 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033230] [] cgroup_kn_lock_live+0x2d/0x70 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033235] [] __cgroup_procs_write.isra.26+0x56/0x240 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033240] [] ? __cgroup_procs_write.isra.26+0x240/0x240 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033245] [] cgroup_tasks_write+0x17/0x20 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033250] [] cgroup_file_write+0x45/0x140 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033256] [] ? kill_css+0xd0/0xd0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033275] [] kernfs_fop_write+0xd1/0x160 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033281] [] ? kernfs_vma_page_mkwrite+0x90/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033291] [] vfs_write+0x9d/0x1e0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033297] [] ? kernfs_vma_page_mkwrite+0x90/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033306] [] ? __fdget+0x12/0x20 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033311] [] SyS_write+0x52/0xa0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033321] [] sysenter_do_call+0x12/0x12 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033325] ---[ end trace f3513225d53cf0f3 ]--- Sep 12 18:14:38 n22kvmclone kernel: [ 39.036277] BUG: unable to handle kernel NULL pointer dereference at 00000038 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] IP: [] cgroup_put+0xc/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] *pde = 00000000 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Oops: 0000 [#1] SMP Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Modules linked in: xt_NFLOG xt_limit ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_recent xt_conntrack nf_conntrack iptable_filter ip_tables af_packet dm_crypt dm_mod usbhid mousedev uhci_hcd ehci_pci microcode psmouse ehci_hcd evdev usbcore atkbd usb_common virtio_console processor button Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] CPU: 0 PID: 1632 Comm: runscript.sh Tainted: G W 3.17.0-rc4 #18 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.7.5-0-ge51488c-20140602_164612-nilsson.home.kraxel.org 04/01/2014 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] task: f6216390 ti: f4b32000 task.ti: f4b32000 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] EIP: 0060:[] EFLAGS: 00010282 CPU: 0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] EIP is at cgroup_put+0xc/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] EAX: 00000000 EBX: f4963688 ECX: 0042621a EDX: 00000008 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] ESI: 00000000 EDI: f4983cb8 EBP: f4b33ea0 ESP: f4b33e8c Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] CR0: 8005003b CR2: 00000038 CR3: 35610000 CR4: 000006c0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Stack: Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] cbda848d 00000000 00000001 00000000 f4963688 f4b33eb0 cbcb5cee 00000000 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] f4963688 f4b33ec0 cbcb5d79 f6216390 00000000 f4b33efc cbcb8386 00000246 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] 00000000 f62168fc f62168f0 00000002 00000000 f611c880 f611c000 f4b33f1c Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Call Trace: Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] [] ? kernfs_unbreak_active_protection+0x4d/0x50 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] [] cgroup_kn_unlock+0x3e/0x60 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] [] cgroup_kn_lock_live+0x69/0x70 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] [] __cgroup_procs_write.isra.26+0x56/0x240 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] [] ? __cgroup_procs_write.isra.26+0x240/0x240 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] [] cgroup_tasks_write+0x17/0x20 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] [] cgroup_file_write+0x45/0x140 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] [] ? kill_css+0xd0/0xd0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] [] kernfs_fop_write+0xd1/0x160 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] [] ? kernfs_vma_page_mkwrite+0x90/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] [] vfs_write+0x9d/0x1e0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] [] ? kernfs_vma_page_mkwrite+0x90/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] [] ? __fdget+0x12/0x20 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] [] SyS_write+0x52/0xa0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] [] sysenter_do_call+0x12/0x12 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Code: ff c7 04 24 e8 2f 19 cc e8 45 35 39 00 e9 76 ff ff ff 8d b6 00 00 00 00 8d bc 27 00 00 00 00 55 89 e5 53 83 ec 10 3e 8d 74 26 00 40 38 01 89 c3 74 0c 83 c4 10 5b 5d c3 8d b6 00 00 00 00 31 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] EIP: [] cgroup_put+0xc/0x90 SS:ESP 0068:f4b33e8c Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] CR2: 0000000000000038 Sep 12 18:14:38 n22kvmclone kernel: [ 39.092883] ---[ end trace f3513225d53cf0f4 ]--- -- Toralf pgp key: 0076 E94E