samba - Feb 2020 - smbd fails to start after upgrade to version 4.11.6

On 05/02/2020 10:33, L.P.H. van Belle via samba wrote:
>   
>> I didn't bother checking, I can cause the panic just by editing
>> smb.conf, adding the two lines in question and then
>> restarting Samba. I
>> do this over SSH, so presumably the network is up on eth0 ;-)
> Ah, ok, so we clearly have bug in samba???
> But i dont see this one on Debian Buster (amd64)..
> I just checked one of my production servers and it work fine..
Neither do I, I am typing this on a Devuan boewulf (you know this as 
buster) using your 4.11.6 packages. It also has an eth0 and wlan0 
packages (I am using wlan0) and this works
>
> Rowland, can you check the pi with the Debian Buster armhf packages?
> Or Dirk, can you test this on Debian Buster.
>
> Its only about these 2 lines.
>
>      interfaces = lo eth0
>      bind interfaces only = yes
>
> ( if needed correct eth0 to your interface name )
>
> I want to know if this is only on Raspbian buster or also on Debian Buster
armhf .
What I can fairly easily do is, dig out my very long ethernet cable and 
use eth0 instead of wlan0. I could then try using the lines and see if 
this works.

Rowland

On 05/02/2020 11:42, Rowland penny via samba wrote:
> On 05/02/2020 10:33, L.P.H. van Belle via samba wrote:
>>> I didn't bother checking, I can cause the panic just by editing
>>> smb.conf, adding the two lines in question and then
>>> restarting Samba. I
>>> do this over SSH, so presumably the network is up on eth0 ;-)
>> Ah, ok, so we clearly have bug in samba???
>> But i dont see this one on Debian Buster (amd64)..
>> I just checked one of my production servers and it work fine..
> Neither do I, I am typing this on a Devuan boewulf (you know this as 
> buster) using your 4.11.6 packages. It also has an eth0 and wlan0 
> packages (I am using wlan0) and this works
>>
>> Rowland, can you check the pi with the Debian Buster armhf packages?
>> Or Dirk, can you test this on Debian Buster.
>>
>> Its only about these 2 lines.
>>
>> ???? interfaces = lo eth0
>> ???? bind interfaces only = yes
>>
>> ( if needed correct eth0 to your interface name )
>>
>> I want to know if this is only on Raspbian buster or also on Debian 
>> Buster armhf .
>
> What I can fairly easily do is, dig out my very long ethernet cable 
> and use eth0 instead of wlan0. I could then try using the lines and 
> see if this works.
>
> Rowland
>
>
>
>
OK, my computer is now running on eth0 and has the two lines in smb.conf 
and it works.

So, a few thoughts based on what we already know:

It seemingly only occurs on a Raspberry pi

It only occurs if the Samba version is 4.11.x (is this true ?)

It seemingly only occurs if the eth0 interface is being used (again is 
this true ?)

We need to know if this happens with the standard Raspbian Samba 
packages, I think I will post on the Rpi forum and ask.

Rowland

> 
> So, a few thoughts based on what we already know:
> 
> It seemingly only occurs on a Raspberry pi
Yes, but.. 
- Only on Raspbian buster armhf ?? 
Or 
- Only on Debian buster armhf  ( Dirk is going to test this tonight ). ?? 
Or ?? Both ?? 

And, there are reports of failty mainboards of the Pi4. 
Where simular things happen..
> 
> It only occurs if the Samba version is 4.11.x (is this true ?)
Roy noticed it with 4.11.6, it did not happen in 4.11.4 also my repo. 
> 
> It seemingly only occurs if the eth0 interface is being used 
> (again is this true ?)
Unknown.. 
> 
> We need to know if this happens with the standard Raspbian Samba 
> packages, I think I will post on the Rpi forum and ask.
I suggest wait untill Dirk kan confirms it with the Debian Buster armhf build. 

Greetz, 

Louis

On 05/02/2020 17:51, Roy Eastwood wrote:
> Hi Rowland,
>> OK, my computer is now running on eth0 and has the two lines in
smb.conf and it works.
> Let me get this right - with the two lines in smb.conf on your pi:
> 	When using wlan0, smbd fails and core dumps?
I haven't tested this on my rpi4 yet, I will though.
> 	When using eth0, smbd starts ok?
No, this is what I have tested, add the lines, restart smbd and it 
panics, remove the lines and restart smbd and it is OK.
> If so that's not my experience, though I don?t use wlan0.
Neither do I.
>> So, a few thoughts based on what we already know:
>>
>> It seemingly only occurs on a Raspberry pi
>>
>> It only occurs if the Samba version is 4.11.x (is this true ?)
> No, it was OK on 4.11.4 - only after I upgraded to 4.11.6 using Louis'
repo BUT there were a load of other changes done at the same time in areas
seemingly unrelated to samba, so one of these could be the cause as well.
So something happened between 4.11.4 and 4.11.6, though as you say, a 
lot of other things changed as well. I have my suspicions, but will not 
say what.

Rowland

Am 05.02.20 um 16:27 schrieb L.P.H. van Belle via samba:
>  
>> So, a few thoughts based on what we already know:
>>
>> It seemingly only occurs on a Raspberry pi
> Yes, but.. 
> - Only on Raspbian buster armhf ?? 
> Or 
> - Only on Debian buster armhf  ( Dirk is going to test this tonight ). ?? 
> Or ?? Both ?? 
>
> And, there are reports of failty mainboards of the Pi4. 
> Where simular things happen..
>
>> It only occurs if the Samba version is 4.11.x (is this true ?)
> Roy noticed it with 4.11.6, it did not happen in 4.11.4 also my repo. 
>
>> It seemingly only occurs if the eth0 interface is being used 
>> (again is this true ?)
> Unknown.. 
>
>> We need to know if this happens with the standard Raspbian Samba 
>> packages, I think I will post on the Rpi forum and ask.
> I suggest wait untill Dirk kan confirms it with the Debian Buster armhf
build.
I have here a little technical Problem with my PI4 that i have to fix it
first.

Think, tomorrow i will test and let you know the Results of my testing
Louis and Rowland.

Have a nice evening

Dirk



>
> Greetz, 
>
> Louis
>
>