From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752395AbcFBBut (ORCPT ); Wed, 1 Jun 2016 21:50:49 -0400 Received: from mail-pf0-f194.google.com ([209.85.192.194]:36633 "EHLO mail-pf0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751846AbcFBBur (ORCPT ); Wed, 1 Jun 2016 21:50:47 -0400 Date: Thu, 2 Jun 2016 10:48:35 +0900 From: Sergey Senozhatsky To: Andrew Morton Cc: Vlastimil Babka , Michal Hocko , "Kirill A. Shutemov" , Stephen Rothwell , linux-mm@kvack.org, linux-next@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [linux-next: Tree for Jun 1] __khugepaged_exit rwsem_down_write_failed lockup Message-ID: <20160602014835.GA635@swordfish> References: <20160601131122.7dbb0a65@canb.auug.org.au> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160601131122.7dbb0a65@canb.auug.org.au> User-Agent: Mutt/1.6.1 (2016-04-27) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On (06/01/16 13:11), Stephen Rothwell wrote: > Hi all, > > Changes since 20160531: > > My fixes tree contains: > > of: silence warnings due to max() usage > > The arm tree gained a conflict against Linus' tree. > > Non-merge commits (relative to Linus' tree): 1100 > 936 files changed, 38159 insertions(+), 17475 deletions(-) Hello, the cc1 process ended up in DN state during kernel -j4 compilation. ... [ 2856.323052] INFO: task cc1:4582 blocked for more than 21 seconds. [ 2856.323055] Not tainted 4.7.0-rc1-next-20160601-dbg-00012-g52c180e-dirty #453 [ 2856.323056] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 2856.323059] cc1 D ffff880057e9fd78 0 4582 4575 0x00000000 [ 2856.323062] ffff880057e9fd78 ffff880057e08000 ffff880057e9fd90 ffff880057ea0000 [ 2856.323065] ffff88005dc3dc68 ffffffff00000001 ffff880057e09500 ffff88005dc3dc80 [ 2856.323067] ffff880057e9fd90 ffffffff81441e33 ffff88005dc3dc68 ffff880057e9fe00 [ 2856.323068] Call Trace: [ 2856.323074] [] schedule+0x83/0x98 [ 2856.323077] [] rwsem_down_write_failed+0x18e/0x1d3 [ 2856.323080] [] ? unlock_page+0x2b/0x2d [ 2856.323083] [] call_rwsem_down_write_failed+0x17/0x30 [ 2856.323084] [] ? call_rwsem_down_write_failed+0x17/0x30 [ 2856.323086] [] down_write+0x1f/0x2e [ 2856.323089] [] __khugepaged_exit+0x104/0x11a [ 2856.323091] [] mmput+0x29/0xc5 [ 2856.323093] [] do_exit+0x34c/0x894 [ 2856.323095] [] ? __do_page_fault+0x2f7/0x399 [ 2856.323097] [] do_group_exit+0x3c/0x98 [ 2856.323099] [] SyS_exit_group+0xf/0xf [ 2856.323101] [] entry_SYSCALL_64_fastpath+0x13/0x8f [ 2877.322853] INFO: task cc1:4582 blocked for more than 21 seconds. [ 2877.322858] Not tainted 4.7.0-rc1-next-20160601-dbg-00012-g52c180e-dirty #453 [ 2877.322858] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 2877.322861] cc1 D ffff880057e9fd78 0 4582 4575 0x00000000 [ 2877.322865] ffff880057e9fd78 ffff880057e08000 ffff880057e9fd90 ffff880057ea0000 [ 2877.322867] ffff88005dc3dc68 ffffffff00000001 ffff880057e09500 ffff88005dc3dc80 [ 2877.322867] ffff880057e9fd90 ffffffff81441e33 ffff88005dc3dc68 ffff880057e9fe00 [ 2877.322870] Call Trace: [ 2877.322875] [] schedule+0x83/0x98 [ 2877.322878] [] rwsem_down_write_failed+0x18e/0x1d3 [ 2877.322881] [] ? unlock_page+0x2b/0x2d [ 2877.322884] [] call_rwsem_down_write_failed+0x17/0x30 [ 2877.322885] [] ? call_rwsem_down_write_failed+0x17/0x30 [ 2877.322887] [] down_write+0x1f/0x2e [ 2877.322890] [] __khugepaged_exit+0x104/0x11a [ 2877.322892] [] mmput+0x29/0xc5 [ 2877.322894] [] do_exit+0x34c/0x894 [ 2877.322896] [] ? __do_page_fault+0x2f7/0x399 [ 2877.322898] [] do_group_exit+0x3c/0x98 [ 2877.322900] [] SyS_exit_group+0xf/0xf [ 2877.322902] [] entry_SYSCALL_64_fastpath+0x13/0x8f ... ps aux | grep cc1 ss 4582 0.0 0.0 0 0 pts/23 DN+ 10:10 0:01 [cc1] -ss