Re: (ITS#3456) test018 consumer segfault

[ando@sys-net.it]

hyc@symas.com wrote:

>I just realized what is going on - the syncprov overlay is searching for 
>the greatest entryCSN in the main process, before the thread subsystem 
>has started. So it is using the default process stack, not our large 
>thread stack. Setting a larger process stack with "ulimit -s" should fix 
>this issue. I wonder if we should rewrite the overlay to perform this 
>check using the runqueue instead, so that the check occurs in a thread. 
>Then we would need a way to prevent syncrepl searches from proceeding 
>until the check finished.
>  
>
I had a related problem with back-sql when acting as a provider, where 
few calls to ch_free() wouldn't get the right context; I worked it 
around byusing a special hlper that checks the  
ldap_pvt_thread_pool_context() and, if it's NULL or different from the 
op->o_tmpmemctx,  uses the latter to explicitly free memory before it 
gets to the regular destroyer functions.  See backsql_entry_clean() in 
back-sql/search.c.

Of course, if you continue with your fix, this will become redundant.

Ciao, p.



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