did compat-wireless-2011-01-27 crash dhcpcd?

did compat-wireless-2011-01-27 crash dhcpcd?

[James]

cfg80211: Calling CRDA to update world regulatory domain
Compat-wireless backport release: compat-wireless-2011-01-06-3-g8db1608
Backport based on linux-next.git next-20110121
ath9k 0000:02:09.0: PCI INT A -> Link[LNKB] -> GSI 17 (level, low) -> IRQ 17
ath: EEPROM regdomain: 0x10
ath: EEPROM indicates we should expect a direct regpair map
ath: Country alpha2 being used: CO
ath: Regpair used: 0x10
ieee80211 phy0: Selected rate control algorithm 'ath9k_rate_control'
cfg80211: wext will not work because kernel was compiled with
CONFIG_WIRELESS_EXT=n. Tools using wext interface, like iwconfig will
not work.
BUG: unable to handle kernel NULL pointer dereference at 00000000000001dc
IP: [<ffffffff8130fb9d>] wext_handle_ioctl+0xae/0x165
PGD 2262a9067 PUD 2262c7067 PMD 0
Oops: 0000 [#1] SMP
last sysfs file:
/sys/devices/pci0000:00/0000:00:08.0/0000:02:09.0/net/wlan0/type
CPU 0
Modules linked in: ath9k(+) mac80211 compat ath9k_common ath9k_hw ath
cfg80211 nvidia(P) [last unloaded: cfg80211]

Pid: 1795, comm: dhcpcd Tainted: P            2.6.37 #14
ALiveNF5-eSATA2+ /To Be Filled By O.E.M.
RIP: 0010:[<ffffffff8130fb9d>]  [<ffffffff8130fb9d>]
wext_handle_ioctl+0xae/0x165
RSP: 0018:ffff88022632fd68  EFLAGS: 00010283
RAX: 0000000000000104 RBX: ffff88022632fdf8 RCX: 000000000000001b
RDX: 0000000000008b1b RSI: 000000000000e050 RDI: ffff8801d2431000
RBP: 0000000000000001 R08: ffffffff8130f43d R09: 000000000000000a
R10: 0000000000000000 R11: 0000000001e683bc R12: 00007fff01d6fa40
R13: ffffffff815d7f10 R14: 0000000000000000 R15: 00007fff01d6fb60
FS:  00007fcad00c1700(0000) GS:ffff8800cec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000001dc CR3: 000000022760c000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process dhcpcd (pid: 1795, threadinfo ffff88022632e000, task
ffff8802285f7380)
Stack:
 0000000000000008 0000000000008b1b 00007fca00008b1b ffffffff812c3834
 0000000000008b1b ffffffff815d7f10 00007fff01d6fa40 0000000000000000
 0000000000000000 ffffffff812c48b8 ffff8801d24315c8 ffff8801d24315b8
Call Trace:
 [<ffffffff812c3834>] ? dev_get_by_name_rcu+0x89/0x95
 [<ffffffff812c48b8>] ? dev_ioctl+0x5f9/0x63b
 [<ffffffff812b687a>] ? sk_prot_alloc+0x8b/0xe3
 [<ffffffff812b2a4d>] ? sock_ioctl+0x225/0x232
 [<ffffffff81093845>] ? get_empty_filp+0x9d/0x155
 [<ffffffff8109ee1b>] ? do_vfs_ioctl+0x479/0x4c6
 [<ffffffff812b3e20>] ? sock_alloc_file+0xc9/0x127
 [<ffffffff81090bd0>] ? fd_install+0x27/0x4d
 [<ffffffff8109eeb3>] ? sys_ioctl+0x4b/0x6f
 [<ffffffff81001e3b>] ? system_call_fastpath+0x16/0x1b
Code: 85 c0 74 4a 48 8b 00 48 85 c0 74 42 48 8b 80 f8 01 00 00 48 85 c0
74 36 0f b7 70 08 8d 8a 00 75 ff ff 39 f1 73 28 48 8b 00 89 c9 <4c> 8b
04 c8 4d 85 c0 74 1a 81 fa df 8b 00 00 77 12 48 8d 4c 24
RIP  [<ffffffff8130fb9d>] wext_handle_ioctl+0xae/0x165
 RSP <ffff88022632fd68>
CR2: 00000000000001dc
---[ end trace 31d89d579b4bd813 ]---
Registered led device: ath9k-phy0::radio
Registered led device: ath9k-phy0::assoc
Registered led device: ath9k-phy0::tx
Registered led device: ath9k-phy0::rx
ieee80211 phy0: Atheros AR5416 MAC/BB Rev:2 AR2133 RF Rev:81
mem=0xffffc90003a00000, irq=17

Re: did compat-wireless-2011-01-27 crash dhcpcd?

[Hauke Mehrtens]

On 01/27/2011 09:52 PM, James wrote:
> cfg80211: Calling CRDA to update world regulatory domain
> Compat-wireless backport release: compat-wireless-2011-01-06-3-g8db1608
> Backport based on linux-next.git next-20110121
> ath9k 0000:02:09.0: PCI INT A -> Link[LNKB] -> GSI 17 (level, low) -> IRQ 17
> ath: EEPROM regdomain: 0x10
> ath: EEPROM indicates we should expect a direct regpair map
> ath: Country alpha2 being used: CO
> ath: Regpair used: 0x10
> ieee80211 phy0: Selected rate control algorithm 'ath9k_rate_control'


> cfg80211: wext will not work because kernel was compiled with
> CONFIG_WIRELESS_EXT=n. Tools using wext interface, like iwconfig will
> not work.

WEXT is deactivated in compat-wireless because CONFIG_WIRELESS_EXT=y was
not set in your kernel config and iwconfig does not work without wext.

See: http://www.spinics.net/lists/linux-wireless/msg63449.html

Hauke

Re: did compat-wireless-2011-01-27 crash dhcpcd?

[James]

On 01/27/11 17:09, Hauke Mehrtens wrote:
> On 01/27/2011 09:52 PM, James wrote:
>> cfg80211: Calling CRDA to update world regulatory domain
>> Compat-wireless backport release: compat-wireless-2011-01-06-3-g8db1608
>> Backport based on linux-next.git next-20110121
>> ath9k 0000:02:09.0: PCI INT A -> Link[LNKB] -> GSI 17 (level, low) -> IRQ 17
>> ath: EEPROM regdomain: 0x10
>> ath: EEPROM indicates we should expect a direct regpair map
>> ath: Country alpha2 being used: CO
>> ath: Regpair used: 0x10
>> ieee80211 phy0: Selected rate control algorithm 'ath9k_rate_control'
>
>> cfg80211: wext will not work because kernel was compiled with
>> CONFIG_WIRELESS_EXT=n. Tools using wext interface, like iwconfig will
>> not work.
> WEXT is deactivated in compat-wireless because CONFIG_WIRELESS_EXT=y was
> not set in your kernel config and iwconfig does not work without wext.
>
> See: http://www.spinics.net/lists/linux-wireless/msg63449.html
>
> Hauke
> --

I'm not using any tools.
The call trace happens after I do a modprobe.
I'm guessing it doesn't like dhcpcd.

Do I really need CONFIG_WIRELESS_EXT?

Re: did compat-wireless-2011-01-27 crash dhcpcd?

[Brian Prodoehl]

On Thu, Jan 27, 2011 at 6:21 PM, James <bjlockie@lockie.ca> wrote:
> On 01/27/11 17:09, Hauke Mehrtens wrote:
>> On 01/27/2011 09:52 PM, James wrote:
>>> cfg80211: Calling CRDA to update world regulatory domain
>>> Compat-wireless backport release: compat-wireless-2011-01-06-3-g8db1608
>>> Backport based on linux-next.git next-20110121
>>> ath9k 0000:02:09.0: PCI INT A -> Link[LNKB] -> GSI 17 (level, low) -> IRQ 17
>>> ath: EEPROM regdomain: 0x10
>>> ath: EEPROM indicates we should expect a direct regpair map
>>> ath: Country alpha2 being used: CO
>>> ath: Regpair used: 0x10
>>> ieee80211 phy0: Selected rate control algorithm 'ath9k_rate_control'
>>
>>> cfg80211: wext will not work because kernel was compiled with
>>> CONFIG_WIRELESS_EXT=n. Tools using wext interface, like iwconfig will
>>> not work.
>> WEXT is deactivated in compat-wireless because CONFIG_WIRELESS_EXT=y was
>> not set in your kernel config and iwconfig does not work without wext.
>>
>> See: http://www.spinics.net/lists/linux-wireless/msg63449.html
>>
>> Hauke
>> --
>
> I'm not using any tools.
> The call trace happens after I do a modprobe.
> I'm guessing it doesn't like dhcpcd.
>
> Do I really need CONFIG_WIRELESS_EXT?
> --


Something is trying to use wext.  This is from your original message:

BUG: unable to handle kernel NULL pointer dereference at 00000000000001dc
IP: [<ffffffff8130fb9d>] wext_handle_ioctl+0xae/0x165

How are you trying to bring up the interface, in order to use dhcpcd
on it?  Anyways, I would say that, yes, you do need
CONFIG_WIRELESS_EXT.

-Brian

Re: did compat-wireless-2011-01-27 crash dhcpcd?

[Johannes Berg]

On Thu, 2011-01-27 at 18:39 -0500, Brian Prodoehl wrote:
> On Thu, Jan 27, 2011 at 6:21 PM, James <bjlockie@lockie.ca> wrote:
> > On 01/27/11 17:09, Hauke Mehrtens wrote:
> >> On 01/27/2011 09:52 PM, James wrote:
> >>> cfg80211: Calling CRDA to update world regulatory domain
> >>> Compat-wireless backport release: compat-wireless-2011-01-06-3-g8db1608
> >>> Backport based on linux-next.git next-20110121
> >>> ath9k 0000:02:09.0: PCI INT A -> Link[LNKB] -> GSI 17 (level, low) -> IRQ 17
> >>> ath: EEPROM regdomain: 0x10
> >>> ath: EEPROM indicates we should expect a direct regpair map
> >>> ath: Country alpha2 being used: CO
> >>> ath: Regpair used: 0x10
> >>> ieee80211 phy0: Selected rate control algorithm 'ath9k_rate_control'
> >>
> >>> cfg80211: wext will not work because kernel was compiled with
> >>> CONFIG_WIRELESS_EXT=n. Tools using wext interface, like iwconfig will
> >>> not work.
> >> WEXT is deactivated in compat-wireless because CONFIG_WIRELESS_EXT=y was
> >> not set in your kernel config and iwconfig does not work without wext.
> >>
> >> See: http://www.spinics.net/lists/linux-wireless/msg63449.html
> >>
> >> Hauke
> >> --
> >
> > I'm not using any tools.
> > The call trace happens after I do a modprobe.
> > I'm guessing it doesn't like dhcpcd.
> >
> > Do I really need CONFIG_WIRELESS_EXT?
> > --
> 
> 
> Something is trying to use wext.  This is from your original message:
> 
> BUG: unable to handle kernel NULL pointer dereference at 00000000000001dc
> IP: [<ffffffff8130fb9d>] wext_handle_ioctl+0xae/0x165

There's still something wrong in compat if that causes it to crash
though.

johannes

enable CONFIG_WIRELESS_EXT

[James]

On 01/27/11 18:39, Brian Prodoehl wrote:
> How are you trying to bring up the interface, in order to use dhcpcd
> on it?  Anyways, I would say that, yes, you do need
> CONFIG_WIRELESS_EXT.
>
> -Brian
>
I had to enable Device Drivers->Network device support->Wireless
LAN->Intel PRO/Wireless 2100 Network Connection  to get
CONFIG_WIRELESS_EXT=y
I propose there should be a new obvious kernel option to enable
CONFIG_WIRELESS_EXT.

Re: enable CONFIG_WIRELESS_EXT

[Randy Dunlap]

On Fri, 28 Jan 2011 11:07:28 -0500 James wrote:

> On 01/27/11 18:39, Brian Prodoehl wrote:
> > How are you trying to bring up the interface, in order to use dhcpcd
> > on it?  Anyways, I would say that, yes, you do need
> > CONFIG_WIRELESS_EXT.
> >
> > -Brian
> >
> I had to enable Device Drivers->Network device support->Wireless
> LAN->Intel PRO/Wireless 2100 Network Connection  to get
> CONFIG_WIRELESS_EXT=y
> I propose there should be a new obvious kernel option to enable
> CONFIG_WIRELESS_EXT.


What wireless driver are you using?

---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***

Re: did compat-wireless-2011-01-27 crash dhcpcd?

[Brian Prodoehl]

On Thu, Jan 27, 2011 at 6:21 PM, James <bjlockie@lockie.ca> wrote:
> On 01/27/11 17:09, Hauke Mehrtens wrote:
>> On 01/27/2011 09:52 PM, James wrote:
>>> cfg80211: Calling CRDA to update world regulatory domain
>>> Compat-wireless backport release: compat-wireless-2011-01-06-3-g8db1608
>>> Backport based on linux-next.git next-20110121
>>> ath9k 0000:02:09.0: PCI INT A -> Link[LNKB] -> GSI 17 (level, low) -> IRQ 17
>>> ath: EEPROM regdomain: 0x10
>>> ath: EEPROM indicates we should expect a direct regpair map
>>> ath: Country alpha2 being used: CO
>>> ath: Regpair used: 0x10
>>> ieee80211 phy0: Selected rate control algorithm 'ath9k_rate_control'
>>
>>> cfg80211: wext will not work because kernel was compiled with
>>> CONFIG_WIRELESS_EXT=n. Tools using wext interface, like iwconfig will
>>> not work.
>> WEXT is deactivated in compat-wireless because CONFIG_WIRELESS_EXT=y was
>> not set in your kernel config and iwconfig does not work without wext.
>>
>> See: http://www.spinics.net/lists/linux-wireless/msg63449.html
>>
>> Hauke
>> --
>
> I'm not using any tools.
> The call trace happens after I do a modprobe.
> I'm guessing it doesn't like dhcpcd.
>
> Do I really need CONFIG_WIRELESS_EXT?

This still doesn't feel like the entire story.  Do you have
NetworkManager running, by chance?

-Brian

Re: did compat-wireless-2011-01-27 crash dhcpcd?

[James]

On 01/28/11 11:12, Brian Prodoehl wrote:
> On Thu, Jan 27, 2011 at 6:21 PM, James <bjlockie@lockie.ca> wrote:
>> On 01/27/11 17:09, Hauke Mehrtens wrote:
>>> On 01/27/2011 09:52 PM, James wrote:
>>>> cfg80211: Calling CRDA to update world regulatory domain
>>>> Compat-wireless backport release: compat-wireless-2011-01-06-3-g8db1608
>>>> Backport based on linux-next.git next-20110121
>>>> ath9k 0000:02:09.0: PCI INT A -> Link[LNKB] -> GSI 17 (level, low) -> IRQ 17
>>>> ath: EEPROM regdomain: 0x10
>>>> ath: EEPROM indicates we should expect a direct regpair map
>>>> ath: Country alpha2 being used: CO
>>>> ath: Regpair used: 0x10
>>>> ieee80211 phy0: Selected rate control algorithm 'ath9k_rate_control'
>>>> cfg80211: wext will not work because kernel was compiled with
>>>> CONFIG_WIRELESS_EXT=n. Tools using wext interface, like iwconfig will
>>>> not work.
>>> WEXT is deactivated in compat-wireless because CONFIG_WIRELESS_EXT=y was
>>> not set in your kernel config and iwconfig does not work without wext.
>>>
>>> See: http://www.spinics.net/lists/linux-wireless/msg63449.html
>>>
>>> Hauke
>>> --
>> I'm not using any tools.
>> The call trace happens after I do a modprobe.
>> I'm guessing it doesn't like dhcpcd.
>>
>> Do I really need CONFIG_WIRELESS_EXT?
> This still doesn't feel like the entire story.  Do you have
> NetworkManager running, by chance?
>
> -Brian
>
No Network Manager, I use Gentoo.
dhcpcd is running
I disabled wpa_suppliucant from auto starting.

Any ideas of what other processes to check for?

Re: did compat-wireless-2011-01-27 crash dhcpcd?

[Brian Prodoehl]

On Fri, Jan 28, 2011 at 10:01 PM, James <bjlockie@lockie.ca> wrote:
> On 01/28/11 11:12, Brian Prodoehl wrote:
>> On Thu, Jan 27, 2011 at 6:21 PM, James <bjlockie@lockie.ca> wrote:
>>> On 01/27/11 17:09, Hauke Mehrtens wrote:
>>>> On 01/27/2011 09:52 PM, James wrote:
>>>>> cfg80211: Calling CRDA to update world regulatory domain
>>>>> Compat-wireless backport release: compat-wireless-2011-01-06-3-g8db1608
>>>>> Backport based on linux-next.git next-20110121
>>>>> ath9k 0000:02:09.0: PCI INT A -> Link[LNKB] -> GSI 17 (level, low) -> IRQ 17
>>>>> ath: EEPROM regdomain: 0x10
>>>>> ath: EEPROM indicates we should expect a direct regpair map
>>>>> ath: Country alpha2 being used: CO
>>>>> ath: Regpair used: 0x10
>>>>> ieee80211 phy0: Selected rate control algorithm 'ath9k_rate_control'
>>>>> cfg80211: wext will not work because kernel was compiled with
>>>>> CONFIG_WIRELESS_EXT=n. Tools using wext interface, like iwconfig will
>>>>> not work.
>>>> WEXT is deactivated in compat-wireless because CONFIG_WIRELESS_EXT=y was
>>>> not set in your kernel config and iwconfig does not work without wext.
>>>>
>>>> See: http://www.spinics.net/lists/linux-wireless/msg63449.html
>>>>
>>>> Hauke
>>>> --
>>> I'm not using any tools.
>>> The call trace happens after I do a modprobe.
>>> I'm guessing it doesn't like dhcpcd.
>>>
>>> Do I really need CONFIG_WIRELESS_EXT?
>> This still doesn't feel like the entire story.  Do you have
>> NetworkManager running, by chance?
>>
>> -Brian
>>
> No Network Manager, I use Gentoo.
> dhcpcd is running
> I disabled wpa_suppliucant from auto starting.
>
> Any ideas of what other processes to check for?

I dug through the source of dhcpcd a bit, and it uses wext to fetch
the SSID.  So, maybe that does explain it.  I guess the real fix is
for dhcpcd to get updated to use nl80211.

Re: did compat-wireless-2011-01-27 crash dhcpcd?

[Kalle Valo]

Brian Prodoehl <bprodoehl@gmail.com> writes:

> I dug through the source of dhcpcd a bit, and it uses wext to fetch
> the SSID.  So, maybe that does explain it.  I guess the real fix is
> for dhcpcd to get updated to use nl80211.

You got me curious now. Why does dhcpd need ssid?

-- 
Kalle Valo