On Wed, 17 Oct 2007, Eric Dumazet wrote:

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> Krzysztof Oledzki a =E9crit :
>>=20
>>=20
>> On Wed, 17 Oct 2007, Eric Dumazet wrote:
>>=20
>>> Krzysztof Oledzki a =E9crit :
>>>> Hello,
>>>>=20
>>>> Today I found in my logs:
>>>>=20
>>>> BUG: unable to handle kernel NULL pointer dereference at virtual addre=
ss=20
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>>>> 000000b0
>>>>  printing eip:
>>>> 78395f65
>>>> *pde =3D 00000000
>>>> Oops: 0000 [#1]
>>>> PREEMPT SMP
>>>> CPU:    0
>>>> EIP:    0060:[<78395f65>]    Not tainted VLI
>>>> EFLAGS: 00210286   (2.6.22.9 #1)
>>>> EIP is at __ip_route_output_key+0x412/0x722
>>>> eax: 80000000   ebx: 00000000   ecx: 5dd2b1c3   edx: 00000000
>>>> esi: 00000000   edi: d44c7e30   ebp: ec8c4980   esp: d44c7ddc
>>>> ds: 007b   es: 007b   fs: 00d8  gs: 0033  ss: 0068
>>>> Process smtpd (pid: 12479, ti=3Dd44c6000 task=3D9e759510 task.ti=3Dd44=
c6000)
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>>>> Stack: d44c7e7c d44c7e7c d44c7eb8 00000000 d44c7e7c 00000000 00000000=
=20
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>>>> 00000005
>>>>        00000000 ffffffff 5dd2b1c3 00000000 00000000 00000000 00000000=
=20
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>>>> 00000000
>>>>        00000000 00000000 00000000 00000000 00000000 00030000 00000000=
=20
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>>>> d44c7e7c
>>>> Call Trace:
>>>>  [<78396280>] ip_route_output_flow+0xb/0x3e
>>>>  [<783b2b29>] ip4_datagram_connect+0x1c9/0x308
>>>>  [<783ba70a>] inet_dgram_connect+0x45/0x4e
>>>>  [<7837135e>] sys_connect+0x72/0x9c
>>>>  [<78371607>] sock_map_fd+0x41/0x4a
>>>>  [<7840d1b1>] _spin_lock+0x33/0x3e
>>>>  [<7840d623>] _spin_unlock+0x25/0x3b
>>>>  [<78371607>] sock_map_fd+0x41/0x4a
>>>>  [<78372792>] sys_socketcall+0x8f/0x242
>>>>  [<7813e99c>] trace_hardirqs_on+0x122/0x14c
>>>>  [<78103dc6>] sysenter_past_esp+0x8f/0x99
>>>>  [<78103d96>] sysenter_past_esp+0x5f/0x99
>>>>  =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>>> Code: fa e0 00 00 00 75 07 c6 44 24 56 05 eb 14 81 fa f0 00 00 00 0f 8=
4=20
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>>>> e1 02 00 00 84 c0 0f 84 d9 02 00 00 8b 44 24 0c 0d 00 00 00 80 <f6> 86=
 b0=20
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>>>> 00 00 00 08 0f 44 44 24 0c 89 44 24 0c b8 01 00 00 00
>>>> EIP: [<78395f65>] __ip_route_output_key+0x412/0x722 SS:ESP 0068:d44c7d=
dc
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>>>>=20
>>>> Shortly before it there was:
>>>> Oct 17 07:17:55 cougar postfix/master[3400]: warning: process=20
>>>> /usr/lib/postfix/smtpd pid 12479 killed by signal 11
>>>>=20
>>>> Best regards,
>>>>=20
>>>>
>>>>                 Krzysztof Ol=EAdzki
>>>=20
>>> Hello Krzysztof
>>>=20
>>> Could you give us some details about this ? kernel version at least.
>>=20
>> Yes, I was little to hurry sending this bug report. Anyway, it is 2.6.22=
=2E9=20
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>> like mentioned in the oops: EFLAGS: 00210286 (2.6.22.9 #1)
>>=20
>>> (you could for example take a look at REPORTING-BUGS, or run
>>> scripts/ver_linux)
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>> Linux cougar 2.6.22.9 #1 SMP PREEMPT Wed Oct 3 10:24:19 CEST 2007 i686=
=20
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>> Intel(R) Pentium(R) D CPU 3.20GHz GenuineIntel GNU/Linux
>>=20
>> Gnu C                  4.1.2
>> Gnu make               3.81
>> binutils               2.17
>> util-linux             2.12r
>> mount                  2.12r
>> module-init-tools      3.2.2
>> e2fsprogs              1.40.2
>> Linux C Library        > libc.2.5
>> Dynamic linker (ldd)   2.5
>> Procps                 3.2.7
>> Net-tools              1.60
>> Kbd                    1.12
>> Sh-utils               6.9
>>=20
>
> Yes indeed, version was on your initial report.
>
> It seems this kernel is unusual (VMSPLIT_2G_OPT instead of stdandard=20
> VMSPLIT_3G), any chance you provide full .config ?

Attached, both .config and dmesg.

Thank you.

Best regards,

 =09=09=09=09Krzysztof Ol=EAdzki