[Samba] FW: Questions about Samba 4

[Rowland Penny]

On 26/08/15 20:54, Jeremy Allison wrote:
> On Wed, Aug 26, 2015 at 08:45:29PM +0100, Rowland Penny wrote:
>> On 26/08/15 19:39, Volker Lendecke wrote:
>>> On Wed, Aug 26, 2015 at 05:44:44PM +0200, L.P.H. van Belle wrote:
>>>> ok, i cant make i crash. but i notice my cpu load.
>>>>
>>>> 17535 username     20   0  294852  13716  11520 R 100.0  1.3 280:28.70 winbindd
>>>>    542 username     20   0  291040  16720  14172 R  99.6  1.6 281:45.88 winbindd
>>>>
>>>> and the funny thing.. this user isnt logged in anymore since the last 6 hours.
>>> What is the exact environment this is running on?
>>>
>>> Thanks,
>>>
>>> Volker
>>>
>> OK, I can confirm that if you set a user to change their password at
>> next login and then try to login to a member server via SSH as that
>> user, winbind runs the CPU on the member server up to 100% and you
>> have to kill winbind (I actually had to use kill -9 on 4 different
>> PIDs as they popped up).
>>
>> OK, what info do you want and how do I get it, please be explicit,
>> don't just say something like 'attach to x with xyz'
>>
>> DC: wheezy, Samba Version 4.1.17-Debian
>> Member Server: Linux Mint, Samba Version 4.1.6-Ubuntu
> Thanks Rowland, can you attach to one of the
> spinning winbindd processes via gdb and get
> a backtrace and upload to the bug report ?
>
> Cheers,
>
> 	Jeremy.

Jeremy, please don't take this the wrong way, but what part of of 
'please be explicit' do you not understand ? :-D

I have not got a clue how to attach to one of the spinning winbindd 
processes via gdb.

If you could please explain just how to do this, I will do it and then 
put something about using gdb on the wiki.

Rowland