Re: (ITS#7723) slapd crashes on multi core machines if a search request is *immediately* followed by an unbind

[hyc@symas.com]

hyc@symas.com wrote:
> michael.vishchers@7p-group.com wrote:
>> Full_Name: Michael Vishchers
>> Version: 2.4.36
>> OS: RHEL 6.3
>> URL: ftp://ftp.openldap.org/incoming/
>> Submission from: (NULL) (109.41.86.33)
>>
>>
>> The bug mentioned in ITS #7716 unfortunately still persists in 2.4.36.
>>
>> We now found a way to reproduce it:

If you want anyone to spend time on this:

Send the stack trace from the crash. Also send your slapd config, sample data, 
and the actual query used in your client.
>>
>> - make sure that threads can run freely (i.e., provide enough cpus)

>
>> - start slapd with the rwm overlay
>> - run a client loop that
>> -- binds as a valid user
>> -- sends a valid search request that is *immediately* (i.e., don't wait for any
>> answers) followed by an unbind request
>>
>> after several iterations (with 2.4.23 it was between 2 and 7, with 2.4.36 it was
>> about 30) slapd crashes in malloc.c
>>
>>
>
>


-- 
   -- Howard Chu
   CTO, Symas Corp.           http://www.symas.com
   Director, Highland Sun     http://highlandsun.com/hyc/
   Chief Architect, OpenLDAP  http://www.openldap.org/project/