EAP-Method=PEAP and tls_reset_handshake/authentication timeout results in core-dumped

EAP-Method=PEAP and tls_reset_handshake/authentication timeout results in core-dumped

[Simon Brand]

[-- Attachment #1: Type: text/plain, Size: 505 bytes --]

Hello,

I use a config with EAP-Method=PEAP and
EAP-PEAP-Phase2-Method=MSCHAPV2, which results in (random?) core-dump.
[0]
This happens after authentication timeout or tls_reset_handshake. [1]
My system is an uptodate arch linux machine with iwd 1.2-1, Linux
5.4.2-arch1-1, glibc 2.30-3. If you need more information I am happy to
provide it. There is no problem with PreSharedKey Wifis.
Thank you for your time and this great tool.

[0] http://sprunge.us/5Ez0pP
[1] http://sprunge.us/c13AYe

Re: EAP-Method=PEAP and tls_reset_handshake/authentication timeout results in core-dumped

[Denis Kenzior]

[-- Attachment #1: Type: text/plain, Size: 991 bytes --]

Hi Simon,

On 12/9/19 10:51 PM, Simon Brand wrote:
> Hello,
> 
> I use a config with EAP-Method=PEAP and
> EAP-PEAP-Phase2-Method=MSCHAPV2, which results in (random?) core-dump.
> [0]

So from the log it appears as if you're able to authenticate and 
establish a connection successfully the first time after iwd starts. 
Right?  And the crash happens after the AP requests reauthentication.

> This happens after authentication timeout or tls_reset_handshake. [1]
> My system is an uptodate arch linux machine with iwd 1.2-1, Linux
> 5.4.2-arch1-1, glibc 2.30-3. If you need more information I am happy to
> provide it. There is no problem with PreSharedKey Wifis.
> Thank you for your time and this great tool.

Any chance you can send us a core dump, or compile iwd with debugging 
enabled (./bootstrap-configure --enable-debug --disable-optimization if 
building from git) and send us the backtrace?

Also, what hardware are you running this on?

Regards,
-Denis

Re: EAP-Method=PEAP and tls_reset_handshake/authentication timeout results in core-dumped

[Simon Brand]

[-- Attachment #1: Type: text/plain, Size: 1664 bytes --]

Hello Denis,

exactly, sometimes I am able to establish a connection and use it for a
long time.
I am using Intel Corporation Wireless 8265 / 8275 (rev 78). [0]
Is there any authentication data stored in the core dump?
I will compile it with debugging enabled, but I probably wont get to it
the next two days.

Best and thanks,
Simon

[0] http://sprunge.us/Gyjrbx


On Tue, 10 Dec 2019 01:29:34 -0600
Denis Kenzior <denkenz@gmail.com> wrote:

> Hi Simon,
> 
> On 12/9/19 10:51 PM, Simon Brand wrote:
> > Hello,
> > 
> > I use a config with EAP-Method=PEAP and
> > EAP-PEAP-Phase2-Method=MSCHAPV2, which results in (random?)
> > core-dump. [0]  
> 
> So from the log it appears as if you're able to authenticate and 
> establish a connection successfully the first time after iwd starts. 
> Right?  And the crash happens after the AP requests reauthentication.
> 
> > This happens after authentication timeout or tls_reset_handshake.
> > [1] My system is an uptodate arch linux machine with iwd 1.2-1,
> > Linux 5.4.2-arch1-1, glibc 2.30-3. If you need more information I
> > am happy to provide it. There is no problem with PreSharedKey Wifis.
> > Thank you for your time and this great tool.  
> 
> Any chance you can send us a core dump, or compile iwd with debugging 
> enabled (./bootstrap-configure --enable-debug --disable-optimization
> if building from git) and send us the backtrace?
> 
> Also, what hardware are you running this on?
> 
> Regards,
> -Denis
> _______________________________________________
> iwd mailing list -- iwd(a)lists.01.org
> To unsubscribe send an email to iwd-leave(a)lists.01.org

Re: EAP-Method=PEAP and tls_reset_handshake/authentication timeout results in core-dumped

[Denis Kenzior]

[-- Attachment #1: Type: text/plain, Size: 966 bytes --]

Hi Simon,

On 12/11/19 2:51 AM, Simon Brand wrote:
> Hello Denis,
> 
> exactly, sometimes I am able to establish a connection and use it for a
> long time.

Interesting.  I'm starting to suspect that the firmware / driver sends 
something unexpected, confusing iwd.  If you can get us a backtrace and 
iwd debug log, that would be great.  An iwmon trace would also be very 
helpful to pinpoint what the kernel/driver is sending us.  See 
https://iwd.wiki.kernel.org/debugging.

> I am using Intel Corporation Wireless 8265 / 8275 (rev 78). [0]
> Is there any authentication data stored in the core dump?

Yes, in theory there is.  Really all we want is the backtrace, so no 
need to share the core dump if you can provide that instead.

> I will compile it with debugging enabled, but I probably wont get to it
> the next two days.

No worries.

> 
> Best and thanks,
> Simon
> 
> [0] http://sprunge.us/Gyjrbx
> 
> 

Regards,
-Denis

Re: EAP-Method=PEAP and tls_reset_handshake/authentication timeout results in core-dumped

[Simon Brand]

[-- Attachment #1: Type: text/plain, Size: 2272 bytes --]

Hello,

today I noticed that the same happend with a PSK WPA2 Network.
iwd log: http://sprunge.us/7CJCtJ
dmesg: http://sprunge.us/aeUNQa

I looked through the log and I had the same behaviour with kernel 4.19
and also iwd 0.23.

Regards,
Simon


On Wed, 11 Dec 2019 09:51:02 +0100
Simon Brand <simon.brand@postadigitale.de> wrote:

> Hello Denis,
> 
> exactly, sometimes I am able to establish a connection and use it for
> a long time.
> I am using Intel Corporation Wireless 8265 / 8275 (rev 78). [0]
> Is there any authentication data stored in the core dump?
> I will compile it with debugging enabled, but I probably wont get to
> it the next two days.
> 
> Best and thanks,
> Simon
> 
> [0] http://sprunge.us/Gyjrbx
> 
> 
> On Tue, 10 Dec 2019 01:29:34 -0600
> Denis Kenzior <denkenz@gmail.com> wrote:
> 
> > Hi Simon,
> > 
> > On 12/9/19 10:51 PM, Simon Brand wrote:  
> > > Hello,
> > > 
> > > I use a config with EAP-Method=PEAP and
> > > EAP-PEAP-Phase2-Method=MSCHAPV2, which results in (random?)
> > > core-dump. [0]    
> > 
> > So from the log it appears as if you're able to authenticate and 
> > establish a connection successfully the first time after iwd
> > starts. Right?  And the crash happens after the AP requests
> > reauthentication. 
> > > This happens after authentication timeout or tls_reset_handshake.
> > > [1] My system is an uptodate arch linux machine with iwd 1.2-1,
> > > Linux 5.4.2-arch1-1, glibc 2.30-3. If you need more information I
> > > am happy to provide it. There is no problem with PreSharedKey
> > > Wifis. Thank you for your time and this great tool.    
> > 
> > Any chance you can send us a core dump, or compile iwd with
> > debugging enabled (./bootstrap-configure --enable-debug
> > --disable-optimization if building from git) and send us the
> > backtrace?
> > 
> > Also, what hardware are you running this on?
> > 
> > Regards,
> > -Denis
> > _______________________________________________
> > iwd mailing list -- iwd(a)lists.01.org
> > To unsubscribe send an email to iwd-leave(a)lists.01.org  
> _______________________________________________
> iwd mailing list -- iwd(a)lists.01.org
> To unsubscribe send an email to iwd-leave(a)lists.01.org

Re: EAP-Method=PEAP and tls_reset_handshake/authentication timeout results in core-dumped

[Simon Brand]

[-- Attachment #1: Type: text/plain, Size: 378 bytes --]

Hi,

I build iwd 1.2 with the mentioned options, got 4 backtraces and the
journalctl and iwmon logs.
I tried to reproduce with another device, but was not able to, so
probably device related (or just easier to reproduce with this device).

https://www.dropbox.com/s/w2xs4oggf0zognf/logs.tar.xz?dl=1

If I can provide anything else, please let me know.

Thanks,
Simon

Re: EAP-Method=PEAP and tls_reset_handshake/authentication timeout results in core-dumped

[Denis Kenzior]

[-- Attachment #1: Type: text/plain, Size: 804 bytes --]

Hi Simon,

On 12/12/19 1:37 AM, Simon Brand wrote:
> Hi,
> 
> I build iwd 1.2 with the mentioned options, got 4 backtraces and the
> journalctl and iwmon logs.
> I tried to reproduce with another device, but was not able to, so
> probably device related (or just easier to reproduce with this device).
> 
> https://www.dropbox.com/s/w2xs4oggf0zognf/logs.tar.xz?dl=1
> 
> If I can provide anything else, please let me know.
> 

So looking at your traces, it seems you've hit the same bug that was 
fixed upstream recently.  Can you apply this fix (or just run iwd git 
HEAD) and see if the issue persists?

https://git.kernel.org/pub/scm/network/wireless/iwd.git/commit/?id=d2556a48b7d65eb670fb0ce20e3f929bf9839a20

We should have iwd 1.3 out in the next few days.

Regards,
-Denis

Re: EAP-Method=PEAP and tls_reset_handshake/authentication timeout results in core-dumped

[Simon Brand]

[-- Attachment #1: Type: text/plain, Size: 1250 bytes --]

Hi Denis,

this seams to fix my problem, thank you very much.
Sorry for your time, I should have tested the git version first.

Regards,
Simon


On Thu, 12 Dec 2019 10:46:08 -0600
Denis Kenzior <denkenz@gmail.com> wrote:

> Hi Simon,
> 
> On 12/12/19 1:37 AM, Simon Brand wrote:
> > Hi,
> > 
> > I build iwd 1.2 with the mentioned options, got 4 backtraces and the
> > journalctl and iwmon logs.
> > I tried to reproduce with another device, but was not able to, so
> > probably device related (or just easier to reproduce with this
> > device).
> > 
> > https://www.dropbox.com/s/w2xs4oggf0zognf/logs.tar.xz?dl=1
> > 
> > If I can provide anything else, please let me know.
> >   
> 
> So looking at your traces, it seems you've hit the same bug that was 
> fixed upstream recently.  Can you apply this fix (or just run iwd git 
> HEAD) and see if the issue persists?
> 
> https://git.kernel.org/pub/scm/network/wireless/iwd.git/commit/?id=d2556a48b7d65eb670fb0ce20e3f929bf9839a20
> 
> We should have iwd 1.3 out in the next few days.
> 
> Regards,
> -Denis
> _______________________________________________
> iwd mailing list -- iwd(a)lists.01.org
> To unsubscribe send an email to iwd-leave(a)lists.01.org