Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 11 Nov 2002 00:57:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 11 Nov 2002 00:57:26 -0500 Received: from [66.59.111.190] ([66.59.111.190]:60905 "EHLO sparrow.stearns.org") by vger.kernel.org with ESMTP id ; Mon, 11 Nov 2002 00:57:24 -0500 Date: Mon, 11 Nov 2002 01:03:56 -0500 (EST) From: William Stearns X-X-Sender: wstearns@sparrow Reply-To: William Stearns To: ML-linux-kernel cc: William Stearns Subject: 2.4.20-pre11 crash: kernel NULL pointer dereference in proc_pid_stat. Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7244 Lines: 143 Good day, all, I had a server hang on me yesterday (could no longer ping it; hosting company had to reboot it). It's a dual Athlon running 25 User-Mode Linux systems on host kernel 2.4.20-pre11. The host system runs very little, but it does run ps every 5 minutes to put up a system summary page. System details are at: http://www.stearns.org/slartibartfast/cpuinfo http://www.stearns.org/slartibartfast/dma http://www.stearns.org/slartibartfast/dmesg.2.4.20-pre11 http://www.stearns.org/slartibartfast/fstab http://www.stearns.org/slartibartfast/interrupts http://www.stearns.org/slartibartfast/iomem http://www.stearns.org/slartibartfast/ioports http://www.stearns.org/slartibartfast/lspci-vvv http://www.stearns.org/slartibartfast/meminfo http://www.stearns.org/slartibartfast/ (30 second summary; Dual AMD Athlon(tm) MP 1900+'s, 2G registered ECC ram, 360G raid array on a 3ware raid card (raid 5 across 4 120G ide's, dual 3C980-TX onboard nics, noapic, rack mounted.) I've deleted a slew of identical reports that follow these; the code traces are identical in all except for a single one which does not have the "Trace; c0143876 " line. Please let me know if there's more I can provide - thanks so much! Cheers, - Bill ksymoops 2.4.4 on i686 2.4.20-pre11. Options used -V (default) -k /proc/ksyms (default) -l /proc/modules (default) -o /lib/modules/2.4.20-pre11/ (default) -m /boot/System.map-2.4.20-pre11 (default) Warning: You did not tell me where to find symbol information. I will assume that the log matches the kernel and modules that are running right now and I'll use the default options above for symbol resolution. If the current kernel and/or modules do not match the log, you can get more accurate output by telling me the kernel version and where to find map, modules, ksyms etc. ksymoops -h explains the options. Nov 9 15:45:02 zaphod kernel: Unable to handle kernel NULL pointer dereference at virtual address 0000002f Nov 9 15:45:02 zaphod kernel: c0168b60 Nov 9 15:45:02 zaphod kernel: *pde = 00000000 Nov 9 15:45:02 zaphod kernel: Oops: 0000 Nov 9 15:45:02 zaphod kernel: CPU: 0 Nov 9 15:45:02 zaphod kernel: EIP: 0010:[] Not tainted Using defaults from ksymoops -t elf32-i386 -a i386 Nov 9 15:45:02 zaphod kernel: EFLAGS: 00010206 Nov 9 15:45:02 zaphod kernel: eax: 00001000 ebx: e1b04674 ecx: 00001000 edx: 00000027 Nov 9 15:45:02 zaphod kernel: esi: cdb62000 edi: cdb62000 ebp: ec6bff50 esp: ec6bff18 Nov 9 15:45:02 zaphod kernel: ds: 0018 es: 0018 ss: 0018 Nov 9 15:45:02 zaphod kernel: Process ps (pid: 11500, stackpage=ec6bf000) Nov 9 15:45:02 zaphod kernel: Stack: 5236e818 0000880d 000042ca 00000000 00000000 00000000 06f57000 c036e818 Nov 9 15:45:02 zaphod kernel: c036e988 000001f0 c0143876 e0957d9c 000001ff cdb62000 ec6bff78 c0166560 Nov 9 15:45:02 zaphod kernel: cdb62000 df1f7000 d80c5000 400279a0 df1f7000 00000000 e3c61b44 ffffffea Nov 9 15:45:02 zaphod kernel: Call Trace: [] [] [] [] [] Nov 9 15:45:02 zaphod kernel: Code: 8b 42 08 2b 42 04 01 45 e0 8b 52 0c 85 d2 75 f0 8b 86 ec 1f >>EIP; c0168b60 <===== Trace; c0143876 Trace; c0166560 Trace; c01442b6 Trace; c0143b33 Trace; c01093bb Code; c0168b60 00000000 <_EIP>: Code; c0168b60 <===== 0: 8b 42 08 mov 0x8(%edx),%eax <===== Code; c0168b63 3: 2b 42 04 sub 0x4(%edx),%eax Code; c0168b66 6: 01 45 e0 add %eax,0xffffffe0(%ebp) Code; c0168b69 9: 8b 52 0c mov 0xc(%edx),%edx Code; c0168b6c c: 85 d2 test %edx,%edx Code; c0168b6e e: 75 f0 jne 0 <_EIP> Code; c0168b70 10: 8b 86 ec 1f 00 00 mov 0x1fec(%esi),%eax Nov 9 15:45:03 zaphod kernel: Unable to handle kernel NULL pointer dereference at virtual address 0000002f Nov 9 15:45:03 zaphod kernel: c0168b60 Nov 9 15:45:03 zaphod kernel: *pde = 00000000 Nov 9 15:45:03 zaphod kernel: Oops: 0000 Nov 9 15:45:03 zaphod kernel: CPU: 0 Nov 9 15:45:03 zaphod kernel: EIP: 0010:[] Not tainted Nov 9 15:45:03 zaphod kernel: EFLAGS: 00010206 Nov 9 15:45:03 zaphod kernel: eax: 00001000 ebx: e1b04674 ecx: 00001000 edx: 00000027 Nov 9 15:45:03 zaphod kernel: esi: cdb62000 edi: cdb62000 ebp: cb03bf50 esp: cb03bf18 Nov 9 15:45:03 zaphod kernel: ds: 0018 es: 0018 ss: 0018 Nov 9 15:45:03 zaphod kernel: Process ps (pid: 11507, stackpage=cb03b000) Nov 9 15:45:03 zaphod kernel: Stack: 5236e818 0000880d 000042ca 00000000 00000000 00000000 06f57000 c036e818 Nov 9 15:45:03 zaphod kernel: c036e988 000001f0 c0143876 e0957d9c 000001ff cdb62000 cb03bf78 c0166560 Nov 9 15:45:03 zaphod kernel: cdb62000 e1447000 d80c5000 400279a0 e1447000 00000000 f2ccf984 ffffffea Nov 9 15:45:03 zaphod kernel: Call Trace: [] [] [] [] [] Nov 9 15:45:03 zaphod kernel: Code: 8b 42 08 2b 42 04 01 45 e0 8b 52 0c 85 d2 75 f0 8b 86 ec 1f >>EIP; c0168b60 <===== Trace; c0143876 Trace; c0166560 Trace; c01442b6 Trace; c0143b33 Trace; c01093bb Code; c0168b60 00000000 <_EIP>: Code; c0168b60 <===== 0: 8b 42 08 mov 0x8(%edx),%eax <===== Code; c0168b63 3: 2b 42 04 sub 0x4(%edx),%eax Code; c0168b66 6: 01 45 e0 add %eax,0xffffffe0(%ebp) Code; c0168b69 9: 8b 52 0c mov 0xc(%edx),%edx Code; c0168b6c c: 85 d2 test %edx,%edx Code; c0168b6e e: 75 f0 jne 0 <_EIP> Code; c0168b70 10: 8b 86 ec 1f 00 00 mov 0x1fec(%esi),%eax --------------------------------------------------------------------------- Boucher's Observation: He who blows his own horn always plays the music several octaves higher than originally written. (Courtesy of "Brett W. McCoy" ) -------------------------------------------------------------------------- William Stearns (wstearns@pobox.com). Mason, Buildkernel, named2hosts, and ipfwadm2ipchains are at: http://www.stearns.org -------------------------------------------------------------------------- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/