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: [<c01ba298>] [<c02825cb>] [<c01f9f45>] [<c01f7c5c>] [<c01f7b33>] [<c015ba70>] [<c015c681>] [<c010951b>]
Unable to handle kernel NULL pointer dereference at virtual address 0000006c
c0280249
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0060:[<c0280249>] 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: [<c02802e1>] [<c02805a3>] [<c0282209>] [<c02bb8e6>] [<c0279315>] [<c015c681>] [<c010951b>]
Code: ac ae 75 08 84 c0 75 f5 31 c0 eb 04 19 c0 0c 01 85 c0 74 07
Trace; c01ba298 <kobject_register+58/70>
Trace; c02825cb <register_netdevice+16b/1b0>
Trace; c01f9f45 <ppp_create_interface+125/1d0>
Trace; c01f7c5c <ppp_unattached_ioctl+11c/1d0>
Trace; c01f7b33 <ppp_ioctl+843/850>
Trace; c015ba70 <setfl+c0/f0>
Trace; c015c681 <sys_ioctl+c1/230>
Trace; c010951b <syscall_call+7/b>
>>EIP; c0280249 <__dev_get_by_name+29/50> <=====
Trace; c02802e1 <dev_get+21/50>
Trace; c02805a3 <dev_load+13/60>
Trace; c0282209 <dev_ioctl+a9/2b0>
Trace; c02bb8e6 <inet_ioctl+e6/100>
Trace; c0279315 <sock_ioctl+c5/210>
Trace; c015c681 <sys_ioctl+c1/230>
Trace; c010951b <syscall_call+7/b>
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: [<c01ba298>] [<c02825cb>] [<c01f9f45>] [<c01f7c5c>] [<c01f7b33>] [<c015ba70>] [<c015c681>] [<c010951b>]
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:[<c0280249>] 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: [<c02802e1>] [<c02805a3>] [<c0282209>] [<c02bb8e6>] [<c0279315>] [<c015c681>] [<c010951b>]
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:[<c0280249>] 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: [<c02802e1>] [<c02805a3>] [<c0282209>] [<c02bb8e6>] [<c0279315>] [<c015c681>] [<c010951b>]
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:[<c0280249>] 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: [<c02802e1>] [<c02805a3>] [<c0282209>] [<c02bb8e6>] [<c0279315>] [<c015c681>] [<c0119aa0>] [<c010951b>]
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:[<c0280249>] 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: [<c02802e1>] [<c02805a3>] [<c0282209>] [<c02bb8e6>] [<c0279315>] [<c015c681>] [<c010951b>]
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--
-
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/