From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933793Ab1EWURB (ORCPT ); Mon, 23 May 2011 16:17:01 -0400 Received: from mail.agmk.net ([91.192.224.71]:44951 "EHLO mail.agmk.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757356Ab1EWUQt (ORCPT ); Mon, 23 May 2011 16:16:49 -0400 X-Greylist: delayed 1878 seconds by postgrey-1.27 at vger.kernel.org; Mon, 23 May 2011 16:16:49 EDT From: =?utf-8?q?Pawe=C5=82_Sikora?= To: linux-kernel@vger.kernel.org Subject: [2.6.38.6] opteron server dies / how to debug call trace flood? Date: Mon, 23 May 2011 21:45:23 +0200 User-Agent: KMail/1.13.7 (Linux/2.6.38.6-8; KDE/4.6.3; x86_64; ; ) Cc: arekm@pld-linux.org MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <201105232145.23365.pluto@agmk.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, i'm currently testing the 2.6.38.6 with vserver/grsec on dual opteron and it dies after some time. afaics on the remote ipmi console there's a call trace flood without explicite kernel oops. machine respones to pings but ssh is unavailable. here's the looged ipmi terminal: (...) Resource Manager: Runlevel has been reached...........................[ 3 ] .------------------------< PLD Linux 2.99 (Th) >------------------------* :|: :|: Welcome to odra :|: Mon May 23 2011 19:31:50 :|: `---{ 0 users }---[ 2.6.38.6-8 ]---( x86_64 )------* ttyS1 odra login: [ 3192.210129] Stack: [ 3192.212164] Call Trace: [ 3192.213016] Code: 90 90 90 90 90 55 48 c7 c0 d0 dd 00 00 48 89 e5 65 48 03 04 25 08 b5 00 00 ba 00 01 00 00 f0 66 0f c1 10 38 f2 74 06 f3 90 8a 10 f6 c9 c3 66 0f 1f 44 00 00 55 48 c7 c0 d0 dd 00 00 48 89 e5 [ 3192.313455] Stack: [ 3192.315494] Call Trace: [ 3192.316350] Code: eb ad 90 90 90 90 90 90 90 55 48 c7 c0 d0 dd 00 00 48 89 e5 65 48 03 04 25 08 b5 00 00 ba 00 01 00 00 f0 66 0f c1 10 38 f2 74 06 90 8a 10 eb f6 c9 c3 66 0f 1f 44 00 00 55 48 c7 c0 d0 dd 00 [ 3192.416782] Stack: [ 3192.418813] Call Trace: [ 3192.419682] Code: 90 90 90 90 90 90 90 55 48 c7 c0 d0 dd 00 00 48 89 e5 65 48 03 04 25 08 b5 00 00 ba 00 01 00 00 f0 66 0f c1 10 38 f2 74 06 f3 90 <8a> 10 eb f6 c9 c3 66 0f 1f 44 00 00 55 48 c7 c0 d0 dd 00 00 48 [ 3192.520109] Stack: [ 3192.522135] Call Trace: [ 3192.523015] Code: 90 90 90 90 90 90 90 55 48 c7 c0 d0 dd 00 00 48 89 e5 65 48 03 04 25 08 b5 00 00 ba 00 01 00 00 f0 66 0f c1 10 38 f2 74 06 f3 90 <8a> 10 eb f6 c9 c3 66 0f 1f 44 00 00 55 48 c7 c0 d0 dd 00 00 48 [ 3192.626777] Stack: [ 3192.628810] Call Trace: [ 3192.629682] Code: 90 90 90 90 90 90 90 55 48 c7 c0 d0 dd 00 00 48 89 e5 65 48 03 04 25 08 b5 00 00 ba 00 01 00 00 f0 66 0f c1 10 38 f2 74 06 f3 90 <8a> 10 eb f6 c9 c3 66 0f 1f 44 00 00 55 48 c7 c0 d0 dd 00 00 48 [ 3192.833431] Stack: [ 3192.835461] Call Trace: [ 3192.836350] Code: 90 90 90 90 90 90 90 55 48 c7 c0 d0 dd 00 00 48 89 e5 65 48 03 04 25 08 b5 00 00 ba 00 01 00 00 f0 66 0f c1 10 38 f2 74 06 f3 90 <8a> 10 eb f6 c9 c3 66 0f 1f 44 00 00 55 48 c7 c0 d0 dd 00 00 48 [ 3192.936757] Stack: [ 3192.938792] Call Trace: [ 3192.939685] Code: 90 90 90 90 90 90 90 55 48 c7 c0 d0 dd 00 00 48 89 e5 65 48 03 04 25 08 b5 00 00 ba 00 01 00 00 f0 66 0f c1 10 38 f2 74 06 f3 90 <8a> 10 eb f6 c9 c3 66 0f 1f 44 00 00 55 48 c7 c0 d0 dd 00 00 48 (...) is there any way to decrypt such flood? BR, Paweł.