(ITS#3546) Sync rep provider and server crash on SIGTERM

[m.d.t.evans@qmul.ac.uk]

Full_Name: Martin Evans
Version: 2.2.23
OS: Linux mdte 2.6.10-1.766_FC3.mdte30 #1 Tue Feb 15 13:50:26 GMT 2005 i686 i686 i386 GNU/Linux
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (217.42.8.111)


While a syncrep consumer being populated, if it is sent TERM signal, both it and
the provider segfault. This did not happen in 2.2.17 (I havent checked
intermediate versions). This can be reproduced by removing the consumers bdb
backend files, starting both the provider and consumer, then sending TERM while
the consumer is replicating.

My provider has a bdb backend.

My consumer is refreshAndPersist:
syncrepl rid=140
         provider=ldap://localhost:11389/
         type=refreshAndPersist
         searchbase="<hidden>"
         filter="(objectClass=*)"
         scope=sub
         schemachecking=off
         updatedn="<hidden>"
         bindmethod=simple
         binddn="<hidden>"
         credentials=<hidden>

For the provider, gdb bt says:
#0  0x0057f7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1  0x005bf955 in raise () from /lib/tls/libc.so.6
#2  0x005c1319 in abort () from /lib/tls/libc.so.6
#3  0x005b8f41 in __assert_fail () from /lib/tls/libc.so.6
#4  0x08066ea4 in connection2anonymous ()
#5  0x08067913 in connection_read ()
#6  0x08064e67 in slapd_daemon_destroy ()
#7  0x007df3ae in start_thread () from /lib/tls/libpthread.so.0
#8  0x0065eb6e in clone () from /lib/tls/libc.so.6

And for the consumer:
#0  0x0057f7a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1  0x005bf955 in raise () from /lib/tls/libc.so.6
#2  0x005c1319 in abort () from /lib/tls/libc.so.6
#3  0x005b8f41 in __assert_fail () from /lib/tls/libc.so.6
#4  0x080db4e2 in ldap_next_message ()
#5  0x0809e8a4 in do_syncrepl ()
#6  0x080d79ef in ldap_int_thread_pool_shutdown ()
#7  0x007df3ae in start_thread () from /lib/tls/libpthread.so.0
#8  0x0065eb6e in clone () from /lib/tls/libc.so.6

This might be related to #3534.

Take care,
Martin.