Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 24 Nov 2000 17:46:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 24 Nov 2000 17:46:45 -0500 Received: from step.polymtl.ca ([132.207.4.32]:22759 "EHLO step.polymtl.ca") by vger.kernel.org with ESMTP id ; Fri, 24 Nov 2000 17:46:34 -0500 Date: Fri, 24 Nov 2000 17:16:32 -0500 From: Marc Heckmann To: Mark Ellis Cc: linux-kernel@vger.kernel.org Subject: Re: OOPS on bringing down ppp Message-ID: <20001124171631.D6276@step.polymtl.ca> In-Reply-To: <20001124105539.A18945@ElCapitan> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20001124105539.A18945@ElCapitan>; from mark.uzumati@virgin.net on Fri, Nov 24, 2000 at 10:55:39AM +0000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Nov 24, 2000 at 10:55:39AM +0000, Mark Ellis wrote: > Hi all, consistently getting the following when pppd is terminated. Happens > in 2.4.0-test11, fine in 2.4.0-test9, don't know about test10. Same happens > for pppd 2.4.0b4 and 2.4.0, both recompiled for test11. Is this related to > the modutils incompatability (modutils 2.3.19) ? I get the same oops w/ 2.4.0-test11pre7, pppd-2.3.11 and pppd-2.4.0, not quite sure if it happens on _every_ pppd termination, but it does happen a lot. Modutils-2.3.2[01]. ksymoops below, notice that it is preceded by a waitpid failed, don't wether it is important or not... My kernel is compiled on a fairly stock RH-7.0 with kgcc. system: -- Versions installed: (if some fields are empty or look -- unusual then possibly you have very old versions) Linux fsck.ikr.org 2.4.0-test11 #2 Sun Nov 19 00:16:38 EST 2000 i586 unknown Kernel modules 2.3.20 Gnu C egcs-2.91.66 Gnu Make 3.79.1 Binutils 2.10.0.18 Linux C Library 2.1.94 Dynamic linker ldd (GNU libc) 2.1.94 Procps 2.0.7 Mount 2.10m Net-tools 1.56 Console-tools 0.3.3 Sh-utils 2.0 Modules Loaded ppp_deflate bsd_comp ppp_async ppp_generic slhc ide-cd cdrom soundcore de4x5 raid1 BusLogic Nov 23 16:05:13 fsck kernel: waitpid(1808) failed, -512 Nov 23 16:05:13 fsck kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000008 Nov 23 16:05:13 fsck kernel: printing eip: Nov 23 16:05:13 fsck kernel: c011556e Nov 23 16:05:13 fsck kernel: *pde = 00000000 Nov 23 16:05:13 fsck kernel: Oops: 0000 Nov 23 16:05:13 fsck kernel: CPU: 0 Nov 23 16:05:13 fsck kernel: EIP: 0010:[exec_usermodehelper+734/944] Nov 23 16:05:13 fsck kernel: EFLAGS: 00010246 Nov 23 16:05:13 fsck kernel: eax: 00000000 ebx: c1177b20 ecx: c1fb4fb0 edx: c1fb4fa4 Nov 23 16:05:13 fsck kernel: esi: c2694000 edi: c2694000 ebp: 00000000 esp: c2695fb0 Nov 23 16:05:13 fsck kernel: ds: 0018 es: 0018 ss: 0018 Nov 23 16:05:13 fsck kernel: Process pppd (pid: 1808, stackpage=c2695000) Nov 23 16:05:13 fsck kernel: Stack: 00000100 c34e7d90 c34e6000 c1a640c0 c3eca9a0 c36fc160 c1177b20 c3eca9a0 Nov 23 16:05:13 fsck kernel: c3eca9a0 c1177b20 c3eca9a0 c3eca9a0 c0115890 c0222840 c34e7e4c c34e7e38 Nov 23 16:05:13 fsck kernel: c0108e87 c34e7dbc c34e7dbc c34e7e4c Nov 23 16:05:13 fsck kernel: Call Trace: [exec_helper+20/24] [kernel_thread+35/48] Nov 23 16:05:13 fsck kernel: Code: 3b 68 08 7d 2a 8b 40 14 83 3c a8 00 74 15 b8 06 00 00 00 89 ksymoops: ksymoops 2.3.5 on i586 2.2.16-22. Options used -v /usr/src/linux/vmlinux (specified) -K (specified) -L (specified) -o /lib/modules/2.4.0-test11/ (specified) -m /usr/src/linux/System.map (specified) No modules in ksyms, skipping objects Nov 23 16:05:13 fsck kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000008 Nov 23 16:05:13 fsck kernel: c011556e Nov 23 16:05:13 fsck kernel: *pde = 00000000 Nov 23 16:05:13 fsck kernel: Oops: 0000 Nov 23 16:05:13 fsck kernel: CPU: 0 Nov 23 16:05:13 fsck kernel: EIP: 0010:[exec_usermodehelper+734/944] Nov 23 16:05:13 fsck kernel: EFLAGS: 00010246 Nov 23 16:05:13 fsck kernel: eax: 00000000 ebx: c1177b20 ecx: c1fb4fb0 edx: c1fb4fa4 Nov 23 16:05:13 fsck kernel: esi: c2694000 edi: c2694000 ebp: 00000000 esp: c2695fb0 Nov 23 16:05:13 fsck kernel: ds: 0018 es: 0018 ss: 0018 Nov 23 16:05:13 fsck kernel: Process pppd (pid: 1808, stackpage=c2695000) Nov 23 16:05:13 fsck kernel: Stack: 00000100 c34e7d90 c34e6000 c1a640c0 c3eca9a0 c36fc160 c1177b20 c3eca9a0 Nov 23 16:05:13 fsck kernel: c3eca9a0 c1177b20 c3eca9a0 c3eca9a0 c0115890 c0222840 c34e7e4c c34e7e38 Nov 23 16:05:13 fsck kernel: c0108e87 c34e7dbc c34e7dbc c34e7e4c Nov 23 16:05:13 fsck kernel: Call Trace: [exec_helper+20/24] [kernel_thread+35/48] Nov 23 16:05:13 fsck kernel: Code: 3b 68 08 7d 2a 8b 40 14 83 3c a8 00 74 15 b8 06 00 00 00 89 Using defaults from ksymoops -t elf32-i386 -a i386 Code; 00000000 Before first symbol 00000000 <_EIP>: Code; 00000000 Before first symbol 0: 3b 68 08 cmp 0x8(%eax),%ebp Code; 00000003 Before first symbol 3: 7d 2a jge 2f <_EIP+0x2f> 0000002f Before first symbol Code; 00000005 Before first symbol 5: 8b 40 14 mov 0x14(%eax),%eax Code; 00000008 Before first symbol 8: 83 3c a8 00 cmpl $0x0,(%eax,%ebp,4) Code; 0000000c Before first symbol c: 74 15 je 23 <_EIP+0x23> 00000023 Before first symbol Code; 0000000e Before first symbol e: b8 06 00 00 00 mov $0x6,%eax Code; 00000013 Before first symbol 13: 89 00 mov %eax,(%eax) -Marc > CONFIG_PPP and CONFIG_PPP_ASYNC are built in, CONFIG_PPP_DEFLATE and > CONFIG_PPP_BSDCOMP as modules, but oopses whether they are loaded or not. > > ksymoops 2.3.4 on i686 2.4.0-test11. Options used > -V (default) > -k /proc/ksyms (default) > -l /proc/modules (default) > -o /lib/modules/2.4.0-test11/ (default) > -m /usr/src/linux/System.map (specified) > > Warning (compare_maps): snd symbol pm_register not found in > /lib/modules/2.4.0-test11/sound/snd.o. Ignoring > /lib/modules/2.4.0-test11/sound/snd.o entry > Warning (compare_maps): snd symbol pm_send not found in > /lib/modules/2.4.0-test11/sound/snd.o. Ignoring > /lib/modules/2.4.0-test11/sound/snd.o entry > Warning (compare_maps): snd symbol pm_unregister not found in > /lib/modules/2.4.0-test11/sound/snd.o. Ignoring > /lib/modules/2.4.0-test11/sound/snd.o entry > c0114c6c > *pde = 00000000 > Oops: 0000 > CPU: 0 > EIP: 0010:[] > Using defaults from ksymoops -t elf32-i386 -a i386 > EFLAGS: 00010246 > eax: c4bb1544 ebx: c4e72000 ecx: c5fe83a0 edx: 00000000 > esi: 00000006 edi: 00000000 ebp: c5fe83a0 esp: c4e73fb8 > ds: 0018 es: 0018 ss: 0018 > Process pppd (pid: 1099, stackpage=c4e73000) > Stack: 00000100 c4e6delc c4e6de4c c5b27e20 c5fe83a0 c11c35c0 c11c35c0 > c11c35c0 c11c35c0 c0114f60 c0225f60 c4e6dedc c4e6dec8 c0108914 > c4e6de4c 00000078 c4e6dedc > Call Trace: [] [] > Code: 8b 4f 08 39 ca 7d 22 8b 47 14 83 3c 90 00 74 14 89 f0 89 d3 > > >>EIP; c0114c6c <===== > Trace; c0114f60 > Trace; c0108914 > Code; c0114c6c > 00000000 <_EIP>: > Code; c0114c6c <===== > 0: 8b 4f 08 mov 0x8(%edi),%ecx <===== > Code; c0114c6f > 3: 39 ca cmp %ecx,%edx > Code; c0114c71 > 5: 7d 22 jge 29 <_EIP+0x29> c0114c95 > > Code; c0114c73 > 7: 8b 47 14 mov 0x14(%edi),%eax > Code; c0114c76 > a: 83 3c 90 00 cmpl $0x0,(%eax,%edx,4) > Code; c0114c7a > e: 74 14 je 24 <_EIP+0x24> c0114c90 > > Code; c0114c7c > 10: 89 f0 mov %esi,%eax > Code; c0114c7e > 12: 89 d3 mov %edx,%ebx > > > 3 warnings issued. Results may not be reliable. > > > Any ideas ? > > Mark > > > - > 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/ - 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/