I have a consumer slapd in refreshandpersist mode and a provider slapd that aborts on the first search operation issued by the consumer. I've tracked it down to the cachesize option. If I set the cachesize option to any value, the provider fails an assertion in pthread_mutex_lock.

here is the output from stdout when running the provider in gdb.

send_ldap_result: conn=0 op=1 p=3 slapd: pthread_mutex_lock.c:108: __pthread_mutex_lock: Assertion `mutex->__data.__owner == 0' failed.

Here is the contents of the mutex in pthread_mutex_lock (gdb) up #7 0xb7eb10c7 in __pthread_mutex_lock (mutex=0x8252b50) at pthread_mutex_lock.c:54 54 pthread_mutex_lock.c: No such file or directory. in pthread_mutex_lock.c (gdb) p *mutex $1 = {__data = {__lock = 1, __count = 0, __owner = 1000, __kind = 0, __nusers = 0, __spins = 0}, __size = "\001\000\000\000\000\000\000\000?\003", '\0' <repeats 13 times>, __align = 1}

Here is the rest of he stack Backtrace

Program received signal SIGABRT, Aborted. [Switching to Thread -1860699216 (LWP 32141)] 0xb7f95410 in ?? () (gdb) bt #0 0xb7f95410 in ?? () #1 0x9117dca4 in ?? () #2 0x00000006 in ?? () #3 0x00007d8d in ?? () #4 0xb7c29041 in *__GI_raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64 #5 0xb7c2a7d7 in *__GI_abort () at ../sysdeps/generic/abort.c:88 #6 0xb7c2279f in *__GI___assert_fail (assertion=0x0, file=0x0, line=0, function=0xb7eb6fc8 "__pthread_mutex_lock") at assert.c:83 #7 0xb7eb10c7 in __pthread_mutex_lock (mutex=0x8252b50) at pthread_mutex_lock.c:54 #8 0x0815a7d9 in ldap_pvt_thread_mutex_lock (mutex=0x8252b50) at thr_posix.c:333 #9 0x08142365 in syncprov_op_search (op=0x82b3f20, rs=0x9117f230) at syncprov.c:1993 #10 0x080ceb3c in overlay_op_walk (op=0x82b3f20, rs=0x9117f230, which=op_search, oi=0x8252c18, on=0x8252d08) at backover.c:498 #11 0x080ced6e in over_op_func (op=0x82b3f20, rs=0x9117f230, which=op_search) at backover.c:560 #12 0x080cedff in over_op_search (op=0x82b3f20, rs=0x9117f230) at backover.c:582 #13 0x08068fd7 in fe_op_search (op=0x82b3f20, rs=0x9117f230) at search.c:355 #14 0x08068aad in do_search (op=0x82b3f20, rs=0x9117f230) at search.c: 217 #15 0x08065ebb in connection_operation (ctx=0x9117f2c0, arg_v=0x82b3f20) at connection.c:1133 #16 0x08159859 in ldap_int_thread_pool_wrapper (xpool=0x8232500) at tpool.c:478 #17 0xb7eafc6b in start_thread (arg=0x9117fbb0) at pthread_create.c:261 #18 0xb7cb8d9e in clone () from /lib/libc.so.6 (gdb) =====================

I am running: linux 2.6.18.3 glibc-2.3.6 OpenLDAP-2.3.35 BerkeleyDB.4.2 w/ patches

Here is my provider config file: # include /etc/openldap/schema/core.schema include /etc/openldap/schema/cosine.schema include /etc/openldap/schema/inetorgperson.schema include /etc/openldap/schema/nis.schema include /etc/openldap/schema/local.schema # access to dn.base="" by * read

# default settings defaultsearchbase "dc=umich,dc=edu" allow bind_v2 bind_anon_cred bind_anon_dn # # file locations pidfile /home/pturgyan/openldap-2.3/slapd.prov.pid argsfile /home/pturgyan/openldap-2.3/slapd.prov.args # threads 32 # # database settings database bdb suffix "dc=umich,dc=edu" rootdn "cn=root,dc=umich,dc=edu" rootpw BD=fast

overlay syncprov #syncprov-checkpoint 100 10 #syncprov-sessionlog 100

directory /var/slapd/tmp/db/db.save cachesize 1000 idlcachesize 25000 checkpoint 1024 5 lastmod on # include /home/pturgyan/openldap-2.3/slapd.index

============================= here is the output from stdout when running the provider in gdb and a stack backtrace after the abort

send_ldap_result: conn=0 op=1 p=3 slapd: pthread_mutex_lock.c:108: __pthread_mutex_lock: Assertion `mutex->__data.__owner == 0' failed.

Program received signal SIGABRT, Aborted. [Switching to Thread -1860699216 (LWP 32141)] 0xb7f95410 in ?? () (gdb) bt #0 0xb7f95410 in ?? () #1 0x9117dca4 in ?? () #2 0x00000006 in ?? () #3 0x00007d8d in ?? () #4 0xb7c29041 in *__GI_raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64 #5 0xb7c2a7d7 in *__GI_abort () at ../sysdeps/generic/abort.c:88 #6 0xb7c2279f in *__GI___assert_fail (assertion=0x0, file=0x0, line=0, function=0xb7eb6fc8 "__pthread_mutex_lock") at assert.c:83 #7 0xb7eb10c7 in __pthread_mutex_lock (mutex=0x8252b50) at pthread_mutex_lock.c:54 #8 0x0815a7d9 in ldap_pvt_thread_mutex_lock (mutex=0x8252b50) at thr_posix.c:333 #9 0x08142365 in syncprov_op_search (op=0x82b3f20, rs=0x9117f230) at syncprov.c:1993 #10 0x080ceb3c in overlay_op_walk (op=0x82b3f20, rs=0x9117f230, which=op_search, oi=0x8252c18, on=0x8252d08) at backover.c:498 #11 0x080ced6e in over_op_func (op=0x82b3f20, rs=0x9117f230, which=op_search) at backover.c:560 #12 0x080cedff in over_op_search (op=0x82b3f20, rs=0x9117f230) at backover.c:582 #13 0x08068fd7 in fe_op_search (op=0x82b3f20, rs=0x9117f230) at search.c:355 #14 0x08068aad in do_search (op=0x82b3f20, rs=0x9117f230) at search.c: 217 #15 0x08065ebb in connection_operation (ctx=0x9117f2c0, arg_v=0x82b3f20) at connection.c:1133 #16 0x08159859 in ldap_int_thread_pool_wrapper (xpool=0x8232500) at tpool.c:478 #17 0xb7eafc6b in start_thread (arg=0x9117fbb0) at pthread_create.c:261 #18 0xb7cb8d9e in clone () from /lib/libc.so.6 (gdb)