Description of problem:

An online reinitialization from a supplier to a consumer is causing the crash
of the consumer after 15 hours.

Version-Release number of selected component (if applicable):

How reproducible:

Not sure how easy to reproduce as the import is running for a long time ( 15
hours ) before the crash.

Steps to Reproduce:

Customer was reinitializing a consumer from a supplier using the Console.
After some hours, the consumer crashed.

Additional info:
The crash seems to happen in the import code:

========================================
Core was generated by `/usr/sbin/ns-slapd -D /etc/dirsrv/slapd-389 -i
/var/run/dirsrv/slapd-389.pid -w'.
Program terminated with signal 11, Segmentation fault.
#0  0x00007f688fa8d072 in import_wait_for_space_in_fifo (job=0x7f6744032850,
new_esize=7011) at ldap/servers/slapd/back-ldbm/import-threads.c:1857
1857                temp_ep = job->fifo.item[i].entry;
========================================

An excerpt of the code:
========================================
1844 static void
1845 import_wait_for_space_in_fifo(ImportJob *job, size_t new_esize)
1846 {
1847     struct backentry *temp_ep = NULL;
1848     size_t i;
1849     int slot_found;
1850     PRIntervalTime sleeptime;
1851
1852     sleeptime = PR_MillisecondsToInterval(import_sleep_time);
1853
1854     /* Now check if fifo has enough space for the new entry */
1855     while ((job->fifo.c_bsize + new_esize) > job->fifo.bsize) {
1856         for ( i = 0, slot_found = 0 ; i < job->fifo.size ; i++ ) {
1857             temp_ep = job->fifo.item[i].entry;
1858             if (temp_ep) {
1859                 if (temp_ep->ep_refcnt == 0 && temp_ep->ep_id <=
job->ready_EID) {
1860                     job->fifo.item[i].entry = NULL;
1861                     if (job->fifo.c_bsize > job->fifo.item[i].esize)
1862                         job->fifo.c_bsize -= job->fifo.item[i].esize;
1863                     else
1864                         job->fifo.c_bsize = 0;
1865                     backentry_free(&temp_ep);
1866                     slot_found = 1;
1867                 }
1868             }
1869         }
1870         if ( slot_found == 0 )
1871             DS_Sleep(sleeptime);
1872     }
1873 }
========================================