From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ob0-f182.google.com (mail-ob0-f182.google.com [209.85.214.182]) by kanga.kvack.org (Postfix) with ESMTP id 4D3036B0035 for ; Mon, 3 Feb 2014 15:04:45 -0500 (EST) Received: by mail-ob0-f182.google.com with SMTP id wm4so8520768obc.27 for ; Mon, 03 Feb 2014 12:04:45 -0800 (PST) Received: from mail-ob0-x230.google.com (mail-ob0-x230.google.com [2607:f8b0:4003:c01::230]) by mx.google.com with ESMTPS id p3si10351859oew.41.2014.02.03.12.04.44 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 03 Feb 2014 12:04:44 -0800 (PST) Received: by mail-ob0-f176.google.com with SMTP id gq1so8349411obb.21 for ; Mon, 03 Feb 2014 12:04:44 -0800 (PST) Message-ID: <52EFF658.2080001@lwfinger.net> Date: Mon, 03 Feb 2014 14:04:40 -0600 From: Larry Finger MIME-Version: 1.0 Subject: Kernel WARNING splat in 3.14-rc1 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org, LKML On my freshly built 3.14-rc1 kernel, I get the following new warning splat from slub: [ 69.008845] ------------[ cut here ]------------ [ 69.008861] WARNING: CPU: 0 PID: 1578 at mm/slub.c:1007 deactivate_slab+0x4bb/0x520() [ 69.008863] Modules linked in: rfcomm nfs fscache af_packet lockd sunrpc bnep rtl8723be arc4 rtl8723_common b43 rtl_pci rtlwifi mac80211 cfg80211 btusb bl uetooth powernow_k8 kvm_amd kvm snd_hda_intel snd_hda_codec bcma snd_hwdep r852 sdhci_pci sdhci snd_pcm sr_mod snd_seq ssb cdrom forcedeth sm_common pcspkr s nd_timer serio_raw snd_seq_device snd nand mtd mmc_core rfkill ata_generic pata_amd nand_ids nand_bch bch nand_ecc 6lowpan_iphc soundcore btcoexist r592 ac v ideo memstick button battery sg dm_mod autofs4 thermal processor thermal_sys hwmon [ 69.008934] CPU: 0 PID: 1578 Comm: akonadi_newmail Not tainted 3.14.0-rc1-wl+ #60 [ 69.008936] Hardware name: Hewlett-Packard HP Pavilion dv2700 Notebook PC/30D6, BIOS F.27 11/27/2008 [ 69.008939] 0000000000000009 ffff880085ab1cd0 ffffffff815ee4a0 0000000000000000 [ 69.008945] ffff880085ab1d08 ffffffff8104e768 ffffea0001ee69c0 ffff8800bb401800 [ 69.008950] 0000000000000000 ffff8800bb400c80 0000000000000002 ffff880085ab1d18 [ 69.008956] Call Trace: [ 69.008965] [] dump_stack+0x4d/0x6f [ 69.008971] [] warn_slowpath_common+0x78/0xa0 [ 69.008976] [] warn_slowpath_null+0x15/0x20 [ 69.008980] [] deactivate_slab+0x4bb/0x520 [ 69.008985] [] ? new_slab+0x1f9/0x300 [ 69.008989] [] __slab_alloc+0x34d/0x4f5 [ 69.008994] [] ? kmem_cache_alloc+0x18b/0x1c0 [ 69.008999] [] ? prepare_creds+0x21/0x1a0 [ 69.009003] [] ? prepare_creds+0x21/0x1a0 [ 69.009007] [] kmem_cache_alloc+0x18b/0x1c0 [ 69.009011] [] prepare_creds+0x21/0x1a0 [ 69.009016] [] SyS_access+0x35/0x1f0 [ 69.009019] [] system_call_fastpath+0x16/0x1b [ 69.009019] ---[ end trace c63f75644bfb030a ]--- There is a similar warning for my other CPU as well. The warning comes from "lockdep_assert_held(&n->list_lock);". If needed, I can bisect this issue. Larry -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org