[B.A.T.M.A.N.] bridge detaching crash

[B.A.T.M.A.N.] bridge detaching crash

[Alessandro Bolletta]

Hi,
in my Openwrt x86 testbed, I created a bridge between a vlan over eth0 and a vlan over bat0.
It works as expected but, when I try to restart network, bridge seems to be not correctly detached and networking stack gets hanged.

This is the dmesg: http://pastebin.com/rxUUGvgX

Can you help me to debug this crash?

Thanks,
Alessandro

Re: [B.A.T.M.A.N.] bridge detaching crash

[Simon Wunderlich]

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Hi,

On Sunday 08 November 2015 23:45:14 Alessandro Bolletta wrote:
> Hi,
> in my Openwrt x86 testbed, I created a bridge between a vlan over eth0 and a
> vlan over bat0. It works as expected but, when I try to restart network,
> bridge seems to be not correctly detached and networking stack gets hanged.
> 
> This is the dmesg: http://pastebin.com/rxUUGvgX
> 
> Can you help me to debug this crash?

Could you please post:

 * batman-adv version
 * your network setup (batctl if, brctl show, etc)
 * commands you use to restart network (OpenWRT or something else?)

Thanks,
    Simon

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Re: [B.A.T.M.A.N.] bridge detaching crash

[Marek Lindner]

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On Monday, November 09, 2015 16:31:17 Simon Wunderlich wrote:
> Could you please post:
> 
>  * batman-adv version
>  * your network setup (batctl if, brctl show, etc)
>  * commands you use to restart network (OpenWRT or something else?)

Please also add the kernel version. 

Cheers,
Marek

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Re: [B.A.T.M.A.N.] bridge detaching crash

[Sven Eckelmann]

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On Monday 09 November 2015 16:31:17 Simon Wunderlich wrote:
> Hi,
> 
> On Sunday 08 November 2015 23:45:14 Alessandro Bolletta wrote:
> > Hi,
> > in my Openwrt x86 testbed, I created a bridge between a vlan over eth0 and 
a
> > vlan over bat0. It works as expected but, when I try to restart network,
> > bridge seems to be not correctly detached and networking stack gets 
hanged.
> > 
> > This is the dmesg: http://pastebin.com/rxUUGvgX
> > 
> > Can you help me to debug this crash?
> 
> Could you please post:
> 
>  * batman-adv version
>  * your network setup (batctl if, brctl show, etc)
>  * commands you use to restart network (OpenWRT or something else?)

And please also enable DEBUG_BUGVERBOSE in your kernel builds and post the 
output from the kernel oops with this option set.

Kind regards,
	Sven

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Re: [B.A.T.M.A.N.] bridge detaching crash

[Alessandro Bolletta]

Hi Simon,

- batman-adv 2015.1.0 with patches from OpenWRT feeds
- the unique bridge present on this machine is between eth0.6 and bat0.2
- /etc/init.d/network restart
- OS: OpenWRT 15.05 stable downloaded from git repo with lastest patches
________________________________________
Da: Simon Wunderlich [sw@simonwunderlich.de]
Inviato: lunedì 9 novembre 2015 16.31
A: b.a.t.m.a.n@lists.open-mesh.org
Cc: Alessandro Bolletta
Oggetto: Re: [B.A.T.M.A.N.] bridge detaching crash

Hi,

On Sunday 08 November 2015 23:45:14 Alessandro Bolletta wrote:
> Hi,
> in my Openwrt x86 testbed, I created a bridge between a vlan over eth0 and a
> vlan over bat0. It works as expected but, when I try to restart network,
> bridge seems to be not correctly detached and networking stack gets hanged.
>
>
>
> Can you help me to debug this crash?

Could you please post:

 * batman-adv version
 * your network setup (batctl if, brctl show, etc)
 * commands you use to restart network (OpenWRT or something else?)

Thanks,
    Simon

Re: [B.A.T.M.A.N.] bridge detaching crash

[Alessandro Bolletta]

Hi Marek,
kernel is 3.18.21
________________________________________
Da: Marek Lindner [mareklindner@neomailbox.ch]
Inviato: lunedì 9 novembre 2015 16.36
A: b.a.t.m.a.n@lists.open-mesh.org
Cc: Simon Wunderlich; Alessandro Bolletta
Oggetto: Re: [B.A.T.M.A.N.] bridge detaching crash

On Monday, November 09, 2015 16:31:17 Simon Wunderlich wrote:
> Could you please post:
>
>  * batman-adv version
>  * your network setup (batctl if, brctl show, etc)
>  * commands you use to restart network (OpenWRT or something else?)

Please also add the kernel version.

Cheers,
Marek

Re: [B.A.T.M.A.N.] bridge detaching crash

[Alessandro Bolletta]

Hi Sven,
sure, I can do that when I'm back to my laboratory since I've to rebuild my OpenWRT image :)

________________________________________
Da: Sven Eckelmann [sven@narfation.org]
Inviato: lunedì 9 novembre 2015 16.54
A: b.a.t.m.a.n@lists.open-mesh.org
Cc: Simon Wunderlich; Alessandro Bolletta
Oggetto: Re: [B.A.T.M.A.N.] bridge detaching crash

On Monday 09 November 2015 16:31:17 Simon Wunderlich wrote:
> Hi,
>
> On Sunday 08 November 2015 23:45:14 Alessandro Bolletta wrote:
> > Hi,
> > in my Openwrt x86 testbed, I created a bridge between a vlan over eth0 and
a
> > vlan over bat0. It works as expected but, when I try to restart network,
> > bridge seems to be not correctly detached and networking stack gets
hanged.
> >
> > This is the dmesg: 
> >
> > Can you help me to debug this crash?
>
> Could you please post:
>
>  * batman-adv version
>  * your network setup (batctl if, brctl show, etc)
>  * commands you use to restart network (OpenWRT or something else?)

And please also enable DEBUG_BUGVERBOSE in your kernel builds and post the
output from the kernel oops with this option set.

Kind regards,
        Sven

Re: [B.A.T.M.A.N.] bridge detaching crash

[Simon Wunderlich]

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Hi Alessandro,

one question unanswered is which interfaces are used for batman-adv in your 
setup. In your kernel log we see eth0.90 and eth0.20.

Also was puzzling me is the message "tried to remove device eth0 from bat0.2". 
This is coming from __netdev_adjacent_dev_remove(), but I don't see how eth0 
would be adjacent to bat0.2 ...

Can you please post batctl if and brctl show while your setup is running?

How repeatable is this problem? Is one node sufficient to reproduce?

Thanks,
    Simon

On Monday 09 November 2015 22:21:51 Alessandro Bolletta wrote:
> Hi Simon,
> 
> - batman-adv 2015.1.0 with patches from OpenWRT feeds
> - the unique bridge present on this machine is between eth0.6 and bat0.2
> - /etc/init.d/network restart
> - OS: OpenWRT 15.05 stable downloaded from git repo with lastest patches
> ________________________________________
> Da: Simon Wunderlich [sw@simonwunderlich.de]
> Inviato: lunedì 9 novembre 2015 16.31
> A: b.a.t.m.a.n@lists.open-mesh.org
> Cc: Alessandro Bolletta
> Oggetto: Re: [B.A.T.M.A.N.] bridge detaching crash
> 
> Hi,
> 
> On Sunday 08 November 2015 23:45:14 Alessandro Bolletta wrote:
> > Hi,
> > in my Openwrt x86 testbed, I created a bridge between a vlan over eth0 and
> > a vlan over bat0. It works as expected but, when I try to restart
> > network, bridge seems to be not correctly detached and networking stack
> > gets hanged.
> > 
> > 
> > 
> > Can you help me to debug this crash?
> 
> Could you please post:
> 
>  * batman-adv version
>  * your network setup (batctl if, brctl show, etc)
>  * commands you use to restart network (OpenWRT or something else?)
> 
> Thanks,
>     Simon

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[B.A.T.M.A.N.] R: RE: bridge detaching crash

[Alessandro Bolletta]

Hi Simon,
sorry for my delay but I couldn't reply before then now.

Here is the brctl show:

bridge name     bridge id               STP enabled     interfaces
br-mgmt         7fff.0cc47a2006d0       no                  eth0.6
                                                        			bat0.2

batctl if:

eth0.50: active
eth0.40: active
eth0.20: active
eth0.90: active
eth0.80: active
eth0.70: active
eth0.60: active
eth1.30: active
eth1.10: active

Every time I try to restart networking stack on OpenWRT or everytime I simply disconnect ethernet cable on eth0 network card I get this dump on dmesg and I can't estabilish new ethernet connection if I don't reboot the whole system.

Now I'm trying to reproduce this behaviour in another node, we'll keep in touch about it.

Any idea?

Thank you guys,
Alessandro

-----Messaggio originale-----
Da: Simon Wunderlich [mailto:sw@simonwunderlich.de] 
Inviato: martedì 10 novembre 2015 17.47
A: Alessandro Bolletta <alessandro@mediaspot.net>
Cc: b.a.t.m.a.n@lists.open-mesh.org
Oggetto: Re: RE: [B.A.T.M.A.N.] bridge detaching crash

Hi Alessandro,

one question unanswered is which interfaces are used for batman-adv in your setup. In your kernel log we see eth0.90 and eth0.20.

Also was puzzling me is the message "tried to remove device eth0 from bat0.2". 
This is coming from __netdev_adjacent_dev_remove(), but I don't see how eth0 would be adjacent to bat0.2 ...

Can you please post batctl if and brctl show while your setup is running?

How repeatable is this problem? Is one node sufficient to reproduce?

Thanks,
    Simon

On Monday 09 November 2015 22:21:51 Alessandro Bolletta wrote:
> Hi Simon,
> 
> - batman-adv 2015.1.0 with patches from OpenWRT feeds
> - the unique bridge present on this machine is between eth0.6 and 
> bat0.2
> - /etc/init.d/network restart
> - OS: OpenWRT 15.05 stable downloaded from git repo with lastest 
> patches ________________________________________
> Da: Simon Wunderlich [sw@simonwunderlich.de]
> Inviato: lunedì 9 novembre 2015 16.31
> A: b.a.t.m.a.n@lists.open-mesh.org
> Cc: Alessandro Bolletta
> Oggetto: Re: [B.A.T.M.A.N.] bridge detaching crash
> 
> Hi,
> 
> On Sunday 08 November 2015 23:45:14 Alessandro Bolletta wrote:
> > Hi,
> > in my Openwrt x86 testbed, I created a bridge between a vlan over 
> > eth0 and a vlan over bat0. It works as expected but, when I try to 
> > restart network, bridge seems to be not correctly detached and 
> > networking stack gets hanged.
> > 
> > 
> > 
> > Can you help me to debug this crash?
> 
> Could you please post:
> 
>  * batman-adv version
>  * your network setup (batctl if, brctl show, etc)
>  * commands you use to restart network (OpenWRT or something else?)
> 
> Thanks,
>     Simon