Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933094AbaAaXWP (ORCPT ); Fri, 31 Jan 2014 18:22:15 -0500 Received: from mail-pd0-f179.google.com ([209.85.192.179]:42817 "EHLO mail-pd0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932368AbaAaXWN (ORCPT ); Fri, 31 Jan 2014 18:22:13 -0500 Date: Fri, 31 Jan 2014 15:22:10 -0800 (PST) From: David Rientjes X-X-Sender: rientjes@chino.kir.corp.google.com To: dormando cc: Alexei Starovoitov , Eric Dumazet , netdev@vger.kernel.org, "linux-kernel@vger.kernel.org" , Alexei Starovoitov Subject: Re: kmem_cache_alloc panic in 3.10+ In-Reply-To: Message-ID: References: <1390062576.31367.519.camel@edumazet-glaptop2.roam.corp.google.com> <1391134615.28432.83.camel@edumazet-glaptop2.roam.corp.google.com> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 31 Jan 2014, dormando wrote: > > CONFIG_SLUB_DEBUG_ON will definitely be slower but can help to identify > > any possible corruption issues. > > > > I'm wondering if you have CONFIG_MEMCG enabled and are actually allocating > > slab in a non-root memcg? What does /proc/self/cgroup say? > > > > /proc/self/cgroup is empty on these hosts. CONFIG_MEMCG is enabled though. > It _looks_ like the cmpxchg_double() so seeing if there is anything else funny going on with CONFIG_SLUB_DEBUG_ON would definitely be helpful; otherwise, try using CONFIG_SLAB is Eric suggested and seeing if the problem goes away. -- 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/