From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Hutchings Subject: RE: kernel ipsec error Date: Tue, 12 Jun 2012 17:53:03 +0100 Message-ID: <1339519983.2701.9.camel@bwh-desktop.uk.solarflarecom.com> References: ,<1339436963.2665.5.camel@bwh-desktop.uk.solarflarecom.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: To: Marco Berizzi Return-path: Received: from webmail.solarflare.com ([12.187.104.25]:7747 "EHLO ocex02.SolarFlarecom.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752262Ab2FLQxG (ORCPT ); Tue, 12 Jun 2012 12:53:06 -0400 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: On Tue, 2012-06-12 at 08:31 +0200, Marco Berizzi wrote: > bhutchings@solarflare.com wrote: > > On Mon, 2012-06-11 at 14:45 +0200, Marco Berizzi wrote: > > > Hello everybody. > > > > > > After 12 days uptime I got this message. > > > Linux is 3.3.5 32bit, running openswan > > > (this is an ipsec gateway/netfilter > > > firewall) and squid. > > > > > > Jun 11 12:53:02 Pleiadi kernel: SLUB: Unable to allocate memory on node -1 (gfp=0x20) > > > Jun 11 12:53:02 Pleiadi kernel: cache: kmalloc-2048, object size: 2048, buffer size: 2048, default order: 2, min order: 0 > > > Jun 11 12:53:02 Pleiadi kernel: node 0: slabs: 61, objs: 476, free: 0 > > > Jun 11 12:53:02 Pleiadi kernel: kworker/0:2: page allocation failure: order:0, mode:0x4020 > > > > So a single page allocation in atomic (non-sleeping) context failed. > > > > [...] > > > Jun 11 12:53:02 Pleiadi kernel: Free swap = 130908kB > > > Jun 11 12:53:02 Pleiadi kernel: Total swap = 151164kB > > > Jun 11 12:53:02 Pleiadi kernel: 40944 pages RAM > > [...] > > > > Not too surprising with this little RAM available (swap didn't help > > since we couldn't wait for swap-out). > > yes, this is really a very old hardware. > > > There could be a memory leak, but you would need to read /proc/meminfo > > and /proc/slabinfo at intervals to work out whether that was the case. > > Kindly, may you tell me which should be the intervals? One second? one minute? Given that you saw this after 12 days, I would think somewhere between an hour and a day would be appropriate. Ben. -- Ben Hutchings, Staff Engineer, Solarflare Not speaking for my employer; that's the marketing department's job. They asked us to note that Solarflare product names are trademarked.