devil-linux-discuss

[Devil-Linux-discuss] 1.4RC2 Oopsing on me ...

[Frank W. <Fra...@ct...>]

Hi all,

I am testing pptp authentication against an AD backend with pppd's
winbind plugin.. (I use this without trouble on several DL-1.2.x
releases...)

The authentication part seems to work alright, but the kernel is oopsing
on me. I don't have the slightest clue how to tackle this problem, but
I'll gladly provide any info that might help....

Thanks,

Frank




Nov 27 13:33:04 src@testmachine pppd[3626]: rcvd [CHAP Response id=0xb5
<e2b6e553c27aec7ad1e96b28884381100000000000000000628cdd3666013b34f7a23ca2c93a6
f0131117300a3cc6efe00>, name = "weifr259"]
Nov 27 13:33:06 src@testmachine kernel: : BUG: unable to handle kernel
NULL pointer dereference at 00000002
Nov 27 13:33:06 src@testmachine kernel: : IP: [<e0775f0f>]
Nov 27 13:33:06 src@testmachine kernel: : *pde = 00000000
Nov 27 13:33:06 src@testmachine kernel: : Oops: 0000 [#3] SMP
Nov 27 13:33:06 src@testmachine kernel: : last sysfs file:
/sys/class/i2c-adapter/i2c-0/name
Nov 27 13:33:06 src@testmachine kernel: : Modules linked in: ppp_deflate
ppp_async crc_ccitt arc4 ppp_mppe_mppc ppp_generic slhc ipv6 deflate
zlib_deflate ctr twofish twofish_common camellia serpent blowfish cast5
aes_i586 aes_generic xcbc rmd160 sha1_generic hmac crypto_null e1000
8021q garp stp dm_mod md_mod parport_pc parport iTCO_wdt thermal button
e1000e i2c_i801 ata_generic iTCO_vendor_support rng_core pata_acpi
i2c_core shpchp pci_hotplug aufs ahci ata_piix libata loop
Nov 27 13:33:06 src@testmachine kernel: :
Nov 27 13:33:06 src@testmachine kernel: : Pid: 3626, comm: pppd Tainted:
G      D    (2.6.31.5-grsec #1)
Nov 27 13:33:06 src@testmachine kernel: : EIP: 0060:[<e0775f0f>] EFLAGS:
00010282 CPU: 0
Nov 27 13:33:06 src@testmachine kernel: : EAX: ffffffea EBX: 00000012
ECX: e0544120 EDX: 00000000
Nov 27 13:33:04 src@testmachine pppd[3626]: sent [CHAP Success id=0xb5
"S=C0961E1AE6EEDA0C89DAB8EFCC3D048893727853 M=Access granted"]
Nov 27 13:33:06 src@testmachine kernel: : ESI: de06debc EDI: de0037b8
EBP: de003740 ESP: de06ddf4
Nov 27 13:33:06 src@testmachine kernel: : DS: 0068 ES: 0068 FS: 00d8 GS:
00e0 SS: 0068
Nov 27 13:33:06 src@testmachine kernel: : Process pppd (pid: 3626,
ti=de06c000 task=dec60890 task.ti=de06c000)
Nov 27 13:33:06 src@testmachine kernel: : Stack:
Nov 27 13:33:06 src@testmachine kernel: : 5b3c0068 8954ec68 5b3c3750
5b3c3750 e075f700 dec0f1a8 c10c9091 8954ec68
Nov 27 13:33:06 src@testmachine kernel: : <0> de06debe 00000000 00000000
e077717e 00000020 8954ec68 de06debc e0771000
Nov 27 13:33:06 src@testmachine kernel: : <0> 5b3c3708 de1ed300 e0761dd6
00000000 df024f94 c120af8f 8954ec68 df024f94
Nov 27 13:33:06 src@testmachine kernel: : Call Trace:
Nov 27 13:33:06 src@testmachine kernel: : [<e075f700>] ?
Nov 27 13:33:06 src@testmachine kernel: : [<c10c9091>] ?
Nov 27 13:33:06 src@testmachine kernel: : [<e077717e>] ?
Nov 27 13:33:06 src@testmachine kernel: : [<e0761dd6>] ?
Nov 27 13:33:06 src@testmachine kernel: : [<c120af8f>] ?
Nov 27 13:33:06 src@testmachine kernel: : [<c1033412>] ?
Nov 27 13:33:06 src@testmachine kernel: : [<c1092dd7>] ?
Nov 27 13:33:06 src@testmachine kernel: : [<e0761070>] ?
Nov 27 13:33:06 src@testmachine kernel: : [<c10bd4b7>] ?
Nov 27 13:33:06 src@testmachine kernel: : [<c10bd789>] ?
Nov 27 13:33:06 src@testmachine kernel: : [<c10b17d5>] ?
Nov 27 13:33:06 src@testmachine kernel: : [<c10b1817>] ?
Nov 27 13:33:06 src@testmachine kernel: : [<c10bdf64>] ?
Nov 27 13:33:06 src@testmachine kernel: : [<c1003fbc>] ?
Nov 27 13:33:06 src@testmachine kernel: : Code: 77 e0 e8 35 01 a6 e0 85
c0 89 45 00 0f 84 9b 01 00 00 31 c9 31 d2 b8 a9 71 77 e0 e8 1c 01 a6 e0
85 c0 89 45 04 0f 84 d2 01 00 00 <8b> 58 18 83 fb 0f 0f 86 b5 00 00 00
ba d0 00 00 00 89 d8 e8 39
Nov 27 13:33:06 src@testmachine kernel: : EIP: [<e0775f0f>]  SS:ESP
0068:de06ddf4
Nov 27 13:33:06 src@testmachine kernel: : CR2: 0000000000000002
Nov 27 13:33:06 src@testmachine kernel: : ---[ end trace
1272391bd654229a ]---

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Re: [Devil-Linux-discuss] 1.4RC2 Oopsing on me ...

[Serge L. <fi...@in...>]

Hi Frank,

On 11/27/2009 07:17 AM, Frank Weis wrote:
> Hi all,
> 
> I am testing pptp authentication against an AD backend with pppd's
> winbind plugin.. (I use this without trouble on several DL-1.2.x
> releases...)
Do you use mppc patch for DL 1.4? I see the latest mppe-mppc patch was from you.
I haven't tested it, but all my attempts to adapt mppc caused the same result -
oops in mppe_mppc module. If it's not critical, I'd suggest omitting this patch.

I have the similar setup but pptpd authenticates against AD via RADIUS (IAS
service). It works.

Serge

Re: [Devil-Linux-discuss] 1.4RC2 Oopsing on me ...

[Frank W. <Fra...@ct...>]

Hi Serge,

I have 2 questions regarding this...

*) will VPN with MS clients work without the mppc/mppe module?
*) I remember trying IAS a long time ago, and I didn't really like it,
but I can't recall why.... Doesn't it need the user's password to be
stored in a special way in AD to work?

Thanks a lot,

Frank




Serge Leschinsky wrote:
> Hi Frank,
> 
> On 11/27/2009 07:17 AM, Frank Weis wrote:
>> Hi all,
>>
>> I am testing pptp authentication against an AD backend with pppd's
>> winbind plugin.. (I use this without trouble on several DL-1.2.x
>> releases...)
> Do you use mppc patch for DL 1.4? I see the latest mppe-mppc patch was from you.
> I haven't tested it, but all my attempts to adapt mppc caused the same result -
> oops in mppe_mppc module. If it's not critical, I'd suggest omitting this patch.
> 
> I have the similar setup but pptpd authenticates against AD via RADIUS (IAS
> service). It works.
> 
> Serge
> 
> ------------------------------------------------------------------------------
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-- 
_______________________________________________
 Centre de Technologie de l'Education
 29 avenue John F. Kennedy
 L-1855 Luxembourg-Kirchberg
 email: Fra...@ct...
 tél.: +352 247-85973
 fax: +352 333797
_______________________________________________

Re: [Devil-Linux-discuss] 1.4RC2 Oopsing on me ...

[Serge L. <fi...@in...>]

Hi Frank,

On 11/30/2009 05:03 AM, Frank Weis wrote:
> Hi Serge,
> 
> I have 2 questions regarding this...
> 
> *) will VPN with MS clients work without the mppc/mppe module?
mppe without mppc will work (i.e. encryption without compression), but without
mppe at all it will not work (at least with default settings).

> *) I remember trying IAS a long time ago, and I didn't really like it,
> but I can't recall why.... Doesn't it need the user's password to be
> stored in a special way in AD to work?
No, there are no special steps to make it operable.

PS. I can send my configs if you want to have a working example.

Serge

> 
> Thanks a lot,
> 
> Frank
> 
> 
> 
> 
> Serge Leschinsky wrote:
>> Hi Frank,
>>
>> On 11/27/2009 07:17 AM, Frank Weis wrote:
>>> Hi all,
>>>
>>> I am testing pptp authentication against an AD backend with pppd's
>>> winbind plugin.. (I use this without trouble on several DL-1.2.x
>>> releases...)
>> Do you use mppc patch for DL 1.4? I see the latest mppe-mppc patch was from you.
>> I haven't tested it, but all my attempts to adapt mppc caused the same result -
>> oops in mppe_mppc module. If it's not critical, I'd suggest omitting this patch.
>>
>> I have the similar setup but pptpd authenticates against AD via RADIUS (IAS
>> service). It works.
>>
>> Serge