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

Friday, 11 October 2013


hyc(a)symas.com wrote:
...
 michael.vishchers(a)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/

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