From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pb0-f53.google.com (mail-pb0-f53.google.com [209.85.160.53]) by kanga.kvack.org (Postfix) with ESMTP id C85316B005A for ; Wed, 18 Sep 2013 10:24:07 -0400 (EDT) Received: by mail-pb0-f53.google.com with SMTP id up15so7035744pbc.26 for ; Wed, 18 Sep 2013 07:24:07 -0700 (PDT) Date: Wed, 18 Sep 2013 16:24:00 +0200 From: Michal Hocko Subject: Re: [patch 0/7] improve memcg oom killer robustness v2 Message-ID: <20130918142400.GA3421@dhcp22.suse.cz> References: <20130916140607.GC3674@dhcp22.suse.cz> <20130916161316.5113F6E7@pobox.sk> <20130916145744.GE3674@dhcp22.suse.cz> <20130916170543.77F1ECB4@pobox.sk> <20130916152548.GF3674@dhcp22.suse.cz> <20130916225246.A633145B@pobox.sk> <20130917000244.GD3278@cmpxchg.org> <20130917131535.94E0A843@pobox.sk> <20130917141013.GA30838@dhcp22.suse.cz> <20130918160304.6EDF2729@pobox.sk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130918160304.6EDF2729@pobox.sk> Sender: owner-linux-mm@kvack.org List-ID: To: azurIt Cc: Johannes Weiner , Andrew Morton , David Rientjes , KAMEZAWA Hiroyuki , KOSAKI Motohiro , linux-mm@kvack.org, cgroups@vger.kernel.org, x86@kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org On Wed 18-09-13 16:03:04, azurIt wrote: [..] > I was finally able to get stack of problematic process :) I saved it > two times from the same process, as Michal suggested (i wasn't able to > take more). Here it is: > > First (doesn't look very helpfull): > [] 0xffffffffffffffff No it is not. > Second: > [] shrink_zone+0x481/0x650 > [] do_try_to_free_pages+0xde/0x550 > [] try_to_free_pages+0x9b/0x120 > [] free_more_memory+0x5d/0x60 > [] __getblk+0x14d/0x2c0 > [] __bread+0x13/0xc0 > [] ext3_get_branch+0x98/0x140 > [] ext3_get_blocks_handle+0xd7/0xdc0 > [] ext3_get_block+0xc4/0x120 > [] do_mpage_readpage+0x38a/0x690 > [] mpage_readpages+0xfb/0x160 > [] ext3_readpages+0x1d/0x20 > [] __do_page_cache_readahead+0x1c5/0x270 > [] ra_submit+0x21/0x30 > [] filemap_fault+0x380/0x4f0 > [] __do_fault+0x78/0x5a0 > [] handle_pte_fault+0x84/0x940 > [] handle_mm_fault+0x16a/0x320 > [] do_page_fault+0x13b/0x490 > [] page_fault+0x1f/0x30 > [] 0xffffffffffffffff This is the direct reclaim path. You are simply running out of memory globaly. There is no memcg specific code in that trace. -- Michal Hocko SUSE Labs -- 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