Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 8 Dec 2000 14:47:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 8 Dec 2000 14:46:57 -0500 Received: from [207.107.233.99] ([207.107.233.99]:39697 "EHLO posto.microflex.ca") by vger.kernel.org with ESMTP id ; Fri, 8 Dec 2000 14:46:46 -0500 Reply-To: From: "Jean-Francois Nadeau" To: Subject: Kernel oops 2.2.17 Date: Fri, 8 Dec 2000 14:14:31 -0500 Message-ID: <001d01c0614b$1886c1e0$a11410ac@microflex.ca> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, We run a heavily accessed Apache 1.3.6 Web server on a Redhat 6.0 distro over 2.2.17. We upgraded from 2.2.16 and I now got some kernel oops. System is : AMD Athlon 600 Mhz. 512 MB RAM. gcc version egcs-2.91.66 glibc 2.1.3-21 Kernel tweaks : echo 1 > /proc/sys/net/ipv4/tcp_syncookies echo 1 > /proc/sys/net/ipv4/conf/all/hidden echo 1 > /proc/sys/net/ipv4/conf/lo/hidden echo 60 > /proc/sys/net/ipv4/tcp_fin_timeout echo 16384 > /proc/sys/fs/file-max echo 32768 > /proc/sys/fs/inode-max I had 5 kernel Oops on the "tar" process every day. (it starts a backup every morning). Then, the master httpsd stops working and could not be killed (even with kill -9 !). Something strange is that it crashed at the same virtual address : Dec 5 06:03:20 trinity kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000010 Dec 6 06:03:01 trinity kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000010 Dec 7 06:03:06 trinity kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000010 Dec 7 17:01:54 trinity kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000010 Dec 8 06:03:02 trinity kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000010 Here's the output from ksymoops for the httpsd crash. ----------------------- No modules in ksyms, skipping objects Warning, no symbols in lsmod, is /proc/modules a valid lsmod file? Dec 7 17:01:54 trinity kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000010 Dec 7 17:01:54 trinity kernel: current->tss.cr3 = 03f00000, %%cr3 = 03f00000 Dec 7 17:01:54 trinity kernel: *pde = 00000000 Dec 7 17:01:54 trinity kernel: Oops: 0000 Dec 7 17:01:54 trinity kernel: CPU: 0 Dec 7 17:01:54 trinity kernel: EIP: 0010:[update_vm_cache_conditional+138/328] Dec 7 17:01:54 trinity kernel: EFLAGS: 00010202 Dec 7 17:01:54 trinity kernel: eax: 00000000 ebx: cb255ed0 ecx: 00000008 edx: 00000008 Dec 7 17:01:54 trinity kernel: esi: 00000000 edi: 0001ffff ebp: 00000400 esp: c1fb5e9c Dec 7 17:01:54 trinity kernel: ds: 0018 es: 0018 ss: 0018 Dec 7 17:01:54 trinity kernel: Process httpsd (pid: 21775, process nr: 127, stackpage=c1fb5000) Dec 7 17:01:54 trinity kernel: Stack: cb255ed0 cf1d0c00 00000008 0cb255ed c0138ba1 cb255ed0 0000d000 cf1d0c00 Dec 7 17:01:54 trinity kernel: 00000400 40349000 cf66f660 ffffffea cb255f1c 00001000 c9bf8300 c9bf8300 Dec 7 17:01:54 trinity kernel: c9bf8300 c1fb5f08 0000d000 00000000 00000000 00000000 dd6b9a00 00000000 Dec 7 17:01:54 trinity kernel: Call Trace: [ext2_file_write+1045/1572] [__kfree_skb+161/168] [boomerang_interrupt+700/908] [u Dec 7 17:01:54 trinity kernel: Code: 39 59 08 75 e1 8b 5c 24 20 39 59 0c 75 d8 ff 41 14 b8 02 00 Warning: trailing garbage ignored on Code: line Text: 'Code: 39 59 08 75 e1 8b 5c 24 20 39 59 0c 75 d8 ff 41 14 b8 02 00 ' Garbage: ' ' Code: 00000000 Before first symbol 00000000 <_IP>: <=== Code: 00000000 Before first symbol 0: 39 59 08 cmpl %ebx,0x8(%ecx) <=== Code: 00000003 Before first symbol 3: 75 e1 jne ffffffe6 Code: 00000005 Before first symbol 5: 8b 5c 24 20 movl 0x20(%esp,1),%ebx Code: 00000009 Before first symbol 9: 39 59 0c cmpl %ebx,0xc(%ecx) Code: 0000000c Before first symbol c: 75 d8 jne ffffffe6 Code: 0000000e Before first symbol e: ff 41 14 incl 0x14(%ecx) Code: 00000011 Before first symbol 11: b8 02 00 00 00 movl $0x2,%eax 5 warnings issued. Results may not be reliable. ----------------------- Do you have any idea of the problem ? Regards, Jean-Francois Nadeau Network Administrator at Microflex (418)694-2300 ext.141 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/