From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 11 Jan 2003 12:29:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 11 Jan 2003 12:29:48 -0500 Received: from kilo.rb.xcalibre.co.uk ([217.204.38.22]:21523 "EHLO kilo.rb.xcalibre.co.uk") by vger.kernel.org with ESMTP id ; Sat, 11 Jan 2003 12:27:57 -0500 Envelope-to: linux-kernel@vger.kernel.org From: Alistair Strachan Date: Sat, 11 Jan 2003 17:36:57 +0000 User-Agent: KMail/1.5.9 MIME-Version: 1.0 Content-Disposition: inline To: linux-kernel@vger.kernel.org Subject: [2.5.56] Oops using pppd. Content-Type: Multipart/Mixed; boundary="Boundary-00=_5YFI+fQfjdk1IDc" Message-Id: <200301111736.57416.alistair@devzero.co.uk> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --Boundary-00=_5YFI+fQfjdk1IDc Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Find attached a decoded kernel oops which I have only _noticed_ since 2.5.56. This is difficult to reproduce, but seems to happen when pppd completes authentication. The connection is dropped immediately. kobject problems? Regards, Alistair Strachan. --Boundary-00=_5YFI+fQfjdk1IDc Content-Type: text/plain; charset="utf-8"; name="ksymoops" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="ksymoops" ksymoops 2.4.8 on i686 2.5.56. Options used -V (default) -k /proc/ksyms (default) -l /proc/modules (default) -o /lib/modules/2.5.56/ (default) -m /boot/System.map-2.5.56 (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. Error (regular_file): read_ksyms stat /proc/ksyms failed No modules in ksyms, skipping objects No ksyms, skipping lsmod Call Trace: [] [] [] [] [] [] [] [] Unable to handle kernel NULL pointer dereference at virtual address 0000006c c0280249 *pde = 00000000 Oops: 0000 CPU: 0 EIP: 0060:[] Tainted: P Using defaults from ksymoops -t elf32-i386 -a i386 EFLAGS: 00010216 eax: ffffffff ebx: dc4cff34 ecx: 0000000f edx: 0000006c esi: 0000006c edi: dc4cff34 ebp: 00000010 esp: dc4cfef4 ds: 007b es: 007b ss: 0068 Stack: dc4ce000 00000001 00008913 dc4cff34 c02802e1 dc4cff34 dc4cff34 00000001 c02805a3 dc4cff34 dc4ce000 c0282209 dc4cff34 bffff140 00000020 00000000 30707070 08148d00 bffff168 0060de02 406962fc bffff1a0 00000089 00000012 Call Trace: [] [] [] [] [] [] [] Code: ac ae 75 08 84 c0 75 f5 31 c0 eb 04 19 c0 0c 01 85 c0 74 07 Trace; c01ba298 Trace; c02825cb Trace; c01f9f45 Trace; c01f7c5c Trace; c01f7b33 Trace; c015ba70 Trace; c015c681 Trace; c010951b >>EIP; c0280249 <__dev_get_by_name+29/50> <===== Trace; c02802e1 Trace; c02805a3 Trace; c0282209 Trace; c02bb8e6 Trace; c0279315 Trace; c015c681 Trace; c010951b Code; c0280249 <__dev_get_by_name+29/50> 00000000 <_EIP>: Code; c0280249 <__dev_get_by_name+29/50> <===== 0: ac lods %ds:(%esi),%al <===== Code; c028024a <__dev_get_by_name+2a/50> 1: ae scas %es:(%edi),%al Code; c028024b <__dev_get_by_name+2b/50> 2: 75 08 jne c <_EIP+0xc> Code; c028024d <__dev_get_by_name+2d/50> 4: 84 c0 test %al,%al Code; c028024f <__dev_get_by_name+2f/50> 6: 75 f5 jne fffffffd <_EIP+0xfffffffd> Code; c0280251 <__dev_get_by_name+31/50> 8: 31 c0 xor %eax,%eax Code; c0280253 <__dev_get_by_name+33/50> a: eb 04 jmp 10 <_EIP+0x10> Code; c0280255 <__dev_get_by_name+35/50> c: 19 c0 sbb %eax,%eax Code; c0280257 <__dev_get_by_name+37/50> e: 0c 01 or $0x1,%al Code; c0280259 <__dev_get_by_name+39/50> 10: 85 c0 test %eax,%eax Code; c028025b <__dev_get_by_name+3b/50> 12: 74 07 je 1b <_EIP+0x1b> 1 warning and 1 error issued. Results may not be reliable. --Boundary-00=_5YFI+fQfjdk1IDc Content-Type: text/plain; charset="utf-8"; name="oops" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="oops" Badness in kobject_register at lib/kobject.c:129 Call Trace: [] [] [] [] [] [] [] [] PPP: couldn't register device ppp0 (-17) Unable to handle kernel NULL pointer dereference at virtual address 0000006c printing eip: c0280249 *pde = 00000000 Oops: 0000 CPU: 0 EIP: 0060:[] Tainted: P EFLAGS: 00010216 eax: ffffffff ebx: dc4cff34 ecx: 0000000f edx: 0000006c esi: 0000006c edi: dc4cff34 ebp: 00000010 esp: dc4cfef4 ds: 007b es: 007b ss: 0068 Process kppp (pid: 370, threadinfo=dc4ce000 task=dd5d2d20) Stack: dc4ce000 00000001 00008913 dc4cff34 c02802e1 dc4cff34 dc4cff34 00000001 c02805a3 dc4cff34 dc4ce000 c0282209 dc4cff34 bffff140 00000020 00000000 30707070 08148d00 bffff168 0060de02 406962fc bffff1a0 00000089 00000012 Call Trace: [] [] [] [] [] [] [] Code: ac ae 75 08 84 c0 75 f5 31 c0 eb 04 19 c0 0c 01 85 c0 74 07 <6>note: kppp[370] exited with preempt_count 1 Unable to handle kernel paging request at virtual address 64203361 printing eip: c0280249 *pde = 00000000 Oops: 0000 CPU: 0 EIP: 0060:[] Tainted: P EFLAGS: 00010216 eax: ffffffff ebx: c6831f34 ecx: 0000000f edx: 64203361 esi: 64203361 edi: c6831f34 ebp: 00000010 esp: c6831ef4 ds: 007b es: 007b ss: 0068 Process kppp (pid: 631, threadinfo=c6830000 task=d873a1a0) Stack: c6830000 00000001 00008913 c6831f34 c02802e1 c6831f34 c6831f34 00000001 c02805a3 c6831f34 c6830000 c0282209 c6831f34 bfffe5a0 00000020 00000000 30707070 00000200 080d67e0 00ffe5e0 bfffef78 4000aa80 bfffe5d4 00005410 Call Trace: [] [] [] [] [] [] [] Code: ac ae 75 08 84 c0 75 f5 31 c0 eb 04 19 c0 0c 01 85 c0 74 07 <6>note: kppp[631] exited with preempt_count 1 Unable to handle kernel paging request at virtual address 0007003e printing eip: c0280249 *pde = 00000000 Oops: 0000 CPU: 0 EIP: 0060:[] Tainted: P EFLAGS: 00010216 eax: 00000001 ebx: c7925f34 ecx: 0000000f edx: 0007003e esi: 0007003e edi: c7925f34 ebp: 00000010 esp: c7925ef4 ds: 007b es: 007b ss: 0068 Process kppp (pid: 632, threadinfo=c7924000 task=d873a1a0) Stack: c7924000 00000001 00008913 c7925f34 c02802e1 c7925f34 c7925f34 00000001 c02805a3 c7925f34 c7924000 c0282209 c7925f34 bffff130 00000020 00000000 30707070 081ba300 bffff158 0060de02 406962fc bffff190 00000089 00000012 Call Trace: [] [] [] [] [] [] [] [] Code: ac ae 75 08 84 c0 75 f5 31 c0 eb 04 19 c0 0c 01 85 c0 74 07 <6>note: kppp[632] exited with preempt_count 1 Unable to handle kernel paging request at virtual address 0006000a printing eip: c0280249 *pde = 00000000 Oops: 0000 CPU: 0 EIP: 0060:[] Tainted: P EFLAGS: 00010216 eax: ffffffff ebx: c2cbff34 ecx: 0000000f edx: 0006000a esi: 0006000a edi: c2cbff34 ebp: 00000010 esp: c2cbfef4 ds: 007b es: 007b ss: 0068 Process kppp (pid: 640, threadinfo=c2cbe000 task=c8d16140) Stack: c2cbe000 00000001 00008913 c2cbff34 c02802e1 c2cbff34 c2cbff34 00000001 c02805a3 c2cbff34 c2cbe000 c0282209 c2cbff34 bfffe590 00000020 00000000 30707070 00000200 080d67e0 00ffe5d0 bfffef68 4000aa80 bfffe5c4 00005410 Call Trace: [] [] [] [] [] [] [] Code: ac ae 75 08 84 c0 75 f5 31 c0 eb 04 19 c0 0c 01 85 c0 74 07 <6>note: kppp[640] exited with preempt_count 1 --Boundary-00=_5YFI+fQfjdk1IDc--