From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 5 Apr 2002 02:48:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 5 Apr 2002 02:48:33 -0500 Received: from [203.199.83.24] ([203.199.83.24]:23773 "HELO mailweb12.rediffmail.com") by vger.kernel.org with SMTP id ; Fri, 5 Apr 2002 02:48:19 -0500 Date: 5 Apr 2002 07:42:51 -0000 Message-ID: <20020405074251.22007.qmail@mailweb12.rediffmail.com> MIME-Version: 1.0 From: "Umaid Singh Rajpurohit" Reply-To: "Umaid Singh Rajpurohit" To: linux-kernel@vger.kernel.org Subject: Unable to handle kernel NULL pointer dereference Content-type: text/plain; format=flowed Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello all, we are running clearcase,sun grid engine on RedHat Linux 7.1 (kernel 2.4.2) on IBM Xseries one U servers that has two CPU's and we mount all the files to be processed using autofs. Here is uname -a Linux 2.4.2-2smp #1 SMP Sun Apr 8 20:21:34 EDT 2001 i686 unknown I have more then sufficient physical memory and swap space Here is some swap space detail form top Mem: 1543868K av, 507684K used, 1036184K free, 0K shrd, 317576K buff Swap: 5116576K av,0K used, 5116576K free 33076K cached we are running n number of IBM X Series server every now and then one or two servers crashes and don't allow me to do anything except hard reset. The /var/log/messages says something like: Jan 6 17:59:45 kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000014 Jan 6 17:59:45 kernel: printing eip: Jan 6 17:59:45 kernel: f8b510b2 Jan 6 17:59:45 kernel: pgd entry eb571000: 0000000000000000 Jan 6 17:59:45 kernel: pmd entry eb571000: 0000000000000000 Jan 6 17:59:45 kernel: ... pmd not present! Jan 6 17:59:45 kernel: Oops: 0000 Jan 6 17:59:45 kernel: CPU: 1 Jan 6 17:59:45 kernel: EIP: 0010:[] Jan 6 17:59:45 kernel: EFLAGS: 00010246 Jan 6 17:59:45 kernel: eax: d951f220 ebx: 00000040 ecx: c027e140 edx: 00000000 Jan 6 17:59:45 kernel: esi: 00000000 edi: ea10fe60 ebp: ea10fe20 esp: ea10fde8 Jan 6 17:59:45 kernel: ds: 0018 es: 0018 ss: 0018 Jan 6 17:59:45 kernel: Process tcsh (pid: 31185, stackpage=ea10f000) Jan 6 17:59:45 kernel: Stack: 00000040 f68c86c4 ea10fea0 d32e2ca0 00000040 f68c86c4 ea10fea0 00000000 Jan 6 17:59:45 kernel: 00000000 00000000 f68c86c4 d951f220 00029508 00000002 ea10fe70 f8b4c6cf Jan 6 17:59:45 kernel: 00000001 ea10fe60 d32e2ca0 f8b4c423 00000040 f68c86c4 d32e2ca0 000079d1 Jan 6 17:59:45 kernel: Call Trace: [] [] [] [] [] [] [] Jan 6 17:59:45 kernel: [] [] [dput+59/416] [permission+69/144] [] [path_walk+2392/2432] [__user_walk+58/96] [sys_stat64+19/112] Jan 6 17:59:45 kernel: [] [] [] [] [] [] [] [] Jan 6 17:59:45 kernel: [error_code+52/60] [system_call+51/56] Jan 6 17:59:45 kernel: [] [] Jan 6 17:59:45 kernel: Jan 6 17:59:45 kernel: Code: 83 7e 14 06 0f 85 f7 00 00 00 83 c4 f8 6a 00 56 e8 3d a8 ff Jan 6 17:59:45 kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000014 Jan 6 17:59:45 kernel: printing eip: Jan 6 17:59:45 kernel: f8b510b2 Jan 6 17:59:45 kernel: pgd entry d4f8d000: 0000000000000000 Jan 6 17:59:45 kernel: pmd entry d4f8d000: 0000000000000000 Jan 6 17:59:45 kernel: ... pmd not present! Jan 6 17:59:45 kernel: Oops: 0000 Jan 6 17:59:45 kernel: CPU: 0 Jan 6 17:59:45 kernel: EIP: 0010:[] Jan 6 17:59:45 kernel: EFLAGS: 00010246 Jan 6 17:59:45 kernel: eax: d951f220 ebx: 00000040 ecx: c027e140 edx: 00000000 Jan 6 17:59:45 kernel: esi: 00000000 edi: e6041e60 ebp: e6041e20 esp: e6041de8 Jan 6 17:59:45 kernel: ds: 0018 es: 0018 ss: 0018 Jan 6 17:59:45 kernel: Process tcsh (pid: 31184, stackpage=e6041000) Jan 6 17:59:45 kernel: Stack: 00000040 f68c8ec8 e6041ea0 eca3ace0 00000040 f68c8ec8 e6041ea0 00000000 Jan 6 17:59:45 kernel: 00000000 00000000 f68c8ec8 d951f220 00029508 00000002 e6041e70 f8b4c6cf Jan 6 17:59:45 kernel: 00000001 e6041e60 eca3ace0 f8b4c423 00000040 f68c8ec8 eca3ace0 000079d0 Jan 6 17:59:45 kernel: Call Trace: [] [] [] [] [] [] [] Jan 6 17:59:45 kernel: [] [] [dput+59/416] [permission+69/144] [] [path_walk+2392/2432] [__user_walk+58/96] [sys_stat64+19/112] Jan 6 17:59:45 kernel: [] [] [] [] [] [] [] [] I am unable to find any information on it.Can any one help me out.If you need any other information please mail me. Warm Regard umaid linux support (TI india)