Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751576Ab1BSGWt (ORCPT ); Sat, 19 Feb 2011 01:22:49 -0500 Received: from out01.mta.xmission.com ([166.70.13.231]:52621 "EHLO out01.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751204Ab1BSGWr (ORCPT ); Sat, 19 Feb 2011 01:22:47 -0500 From: ebiederm@xmission.com (Eric W. Biederman) To: Linus Torvalds Cc: Michal Hocko , Ingo Molnar , linux-mm@kvack.org, LKML , David Miller , Eric Dumazet References: <20110216185234.GA11636@tiehlicka.suse.cz> <20110216193700.GA6377@elte.hu> <20110217090910.GA3781@tiehlicka.suse.cz> <20110217163531.GF14168@elte.hu> <20110218122938.GB26779@tiehlicka.suse.cz> <20110218162623.GD4862@tiehlicka.suse.cz> Date: Fri, 18 Feb 2011 22:22:32 -0800 In-Reply-To: (Linus Torvalds's message of "Fri, 18 Feb 2011 08:39:02 -0800") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-XM-SPF: eid=;;;mid=;;;hst=in01.mta.xmission.com;;;ip=98.207.153.68;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX1+vg9tx4SoBpmTmvxYfuJIGydeuFsKvo7o= X-SA-Exim-Connect-IP: 98.207.153.68 X-SA-Exim-Mail-From: ebiederm@xmission.com X-Spam-Report: * 7.0 XM_URI_RBL URI blacklisted in uri.bl.xmission.com * [URIs: linux-foundation.org] * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP * 0.0 T_TM2_M_HEADER_IN_MSG BODY: T_TM2_M_HEADER_IN_MSG * -3.0 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa05 1397; Body=1 Fuz1=1 Fuz2=1] * 0.0 T_TooManySym_01 4+ unique symbols in subject * 0.0 T_TooManySym_02 5+ unique symbols in subject * 0.4 UNTRUSTED_Relay Comes from a non-trusted relay X-Spam-DCC: XMission; sa05 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: ***;Linus Torvalds X-Spam-Relay-Country: Subject: Re: BUG: Bad page map in process udevd (anon_vma: (null)) in 2.6.38-rc4 X-Spam-Flag: No X-SA-Exim-Version: 4.2.1 (built Fri, 06 Aug 2010 16:31:04 -0600) X-SA-Exim-Scanned: Yes (on in01.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3141 Lines: 61 Linus Torvalds writes: > On Fri, Feb 18, 2011 at 8:26 AM, Michal Hocko wrote: >>> Now, I will try with the 2 patches patches in this thread. I will also >>> turn on DEBUG_LIST and DEBUG_PAGEALLOC. >> >> I am not able to reproduce with those 2 patches applied. > > Thanks for verifying. Davem/EricD - you can add Michal's tested-by to > the patches too. > > And I think we can consider this whole thing solved. It hopefully also > explains all the other random crashes that EricB saw - just random > memory corruption in other datastructures. > > EricB - do all your stress-testers run ok now? > > Linus It looks like the same problematic dellink pattern made it into net_namespace.c, and your new LIST_DEBUG changes caught it. I will cook up a patch after I get some sleep. Eric ------------[ cut here ]------------ WARNING: at lib/list_debug.c:53 __list_del_entry+0xa1/0xd0() Hardware name: X7DWU list_del corruption. prev->next should be ffff88005fc12140, but was (null) Modules linked in: macvtap ipt_LOG xt_limit ipt_REJECT xt_hl xt_state dummy tulip xt_tcpudp iptable_filter inet_diag veth macvlan nfsd lockd nfs_acl auth_rpcgss exportfs sunrpc dm_mirror dm_region_hash dm_log uinput bonding ipv6 kvm_intel kvm fuse xt_multiport iptable_nat ip_tables nf_nat x_tables nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 tun 8021q iTCO_wdt microcode iTCO_vendor_support ghes hed sg i5k_amb i5400_edac ioatdma edac_core i2c_i801 serio_raw pcspkr dca shpchp radeon ttm drm_kms_helper drm hwmon i2c_algo_bit i2c_core sr_mod ehci_hcd cdrom netxen_nic uhci_hcd igb dm_mod [last unloaded: mperf] Pid: 4865, comm: kworker/u:0 Tainted: G W 2.6.38-rc4-359399.2010AroraKernelBeta.fc14.x86_64 #1 Call Trace: [] ? warn_slowpath_common+0x7a/0xb0 [] ? warn_slowpath_fmt+0x41/0x50 [] ? rtnl_lock+0x12/0x20 [] ? __rtnl_unlock+0x10/0x20 [] ? __list_del_entry+0xa1/0xd0 [] ? unregister_netdevice_queue+0x34/0xa0 [] ? veth_dellink+0x20/0x40 [veth] [] ? default_device_exit_batch+0x61/0xe0 [] ? ops_exit_list.clone.0+0x53/0x60 [] ? cleanup_net+0x100/0x1b0 [] ? process_one_work+0x187/0x4b0 [] ? process_one_work+0x121/0x4b0 [] ? cleanup_net+0x0/0x1b0 [] ? worker_thread+0x15c/0x330 [] ? worker_thread+0x0/0x330 [] ? kthread+0xb6/0xc0 [] ? kernel_thread_helper+0x4/0x10 [] ? _raw_spin_unlock_irq+0x2b/0x40 [] ? restore_args+0x0/0x30 [] ? kthread+0x0/0xc0 [] ? kernel_thread_helper+0x0/0x10 ---[ end trace bcdbebbab42b1e76 ]--- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/