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Re: (ITS#8296) slapd suddenly crash when using syncprov

To: openldap-its@OpenLDAP.org
Subject: Re: (ITS#8296) slapd suddenly crash when using syncprov
From: maurizio.lattuada@gmail.com
Date: Fri, 30 Oct 2015 08:36:13 +0000
Auto-submitted: auto-generated (OpenLDAP-ITS)
Hello Quanah,

I added the syncprov overlay to the 1st database, but is neither used
by our application (rather than by another off-the-shelf application)
nor replicated as is for the 2nd database.
For your 2nd request, unfortunately I'm not able to test it, since
between the LDAP and my test-bench application there is another server
side application:

Test-bench_application --> spring_http_invoker --> Server_side_app
---> data_for_db_2 ---> LDAP ---> data_from_db_2 --->
App_in_syncprov_with_ldap

I don't have the control over the section "server_side_app --->
data_for_db_2 ---> LDAP".

Anyway, as said above, now I enabled the syncprov over both databases:

--- begin slapd.conf ---
database bdb
suffix "o=3Dorgname,c=3Dat"
checkpoint 1024 15
rootdn "cn=3Droot,o=3Dorgname,c=3Dat"
rootpw XYZ
directory /var/lib/ldap
index entryCSN                                  eq
index entryUUID                                 eq
overlay syncprov
syncprov-checkpoint 1000 10
syncprov-sessionlog 1000
syncprov-reloadhint TRUE
syncprov-nopresent FALSE

database bdb
suffix "o=3Dvivates,c=3Dch"
checkpoint 1024 15
rootdn "cn=3Droot,o=3Dvivates,c=3Dch"
rootpw XXX
directory /var/lib/ldap-hpd
index entryCSN                                  eq
index entryUUID                                 eq
overlay unique
unique_attributes hcIdentifier
overlay syncprov
syncprov-checkpoint 1000 10
syncprov-sessionlog 1000
syncprov-reloadhint TRUE
syncprov-nopresent FALSE
--- end slapd.conf ---




but unfortunately I had the same issue (as usual, I restarted the
server before debugging SLAPD).
Please note: if I keep stopped the application that is in syncprov
with LDAP ("App_in_syncprov_with_ldap" on the schema above), I load
all the entries in the 2nd database, then I turn that application on,
then slapd works flawless and the (offline) synchronization is done
right.


--- begin gdb session ---
top - 08:56:12 up 4 min,  2 users,  load average: 0.09, 0.27, 0.14
Tasks: 124 total,   1 running, 123 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.5%us,  0.5%sy,  0.0%ni, 99.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0=
%st
Mem:   4019472k total,  2928668k used,  1090804k free,    56080k buffers
Swap:  2064380k total,        0k used,  2064380k free,  1572400k cached


[root@ibb0301 .libs]# pwd
/root/src_openldap/openldap/servers/slapd/.libs
[root@ibb0301 .libs]# ./slapd -VVV
@(#) $OpenLDAP: slapd 2.4.X (Oct 30 2015 08:49:20) $
    root@ibb0301:/root/src_openldap/openldap/servers/slapd

Included static overlays:
    syncprov
Included static backends:
    config
    ldif
    monitor
    bdb
    hdb
    ldap
    mdb
    relay
[root@ibb0301 .libs]# gdb ./slapd
GNU gdb (GDB) Red Hat Enterprise Linux (7.2-83.el6)
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.htm=
l>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from
/root/src_openldap/openldap/servers/slapd/.libs/slapd...done.
(gdb) run -d 1 -h ldap://
Starting program:
/root/src_openldap/openldap/servers/slapd/.libs/slapd -d 1 -h ldap://
[Thread debugging using libthread_db enabled]
ldap_url_parse_ext(ldap://localhost/)
ldap_init: trying /etc/openldap/ldap.conf
ldap_init: using /etc/openldap/ldap.conf
ldap_url_parse_ext(ldap://localhost/)
ldap_init: HOME env is /root
ldap_init: trying /root/ldaprc
ldap_init: trying /root/.ldaprc
ldap_init: trying ldaprc
ldap_init: LDAPCONF env is NULL
ldap_init: LDAPRC env is NULL
56332204 @(#) $OpenLDAP: slapd 2.4.X (Oct 30 2015 08:49:20) $
    root@ibb0301:/root/src_openldap/openldap/servers/slapd
ldap_pvt_gethostbyname_a: host=3Dibb0301, r=3D0
56332204 daemon_init: listen on ldap://
56332204 daemon_init: 1 listeners to open...
ldap_url_parse_ext(ldap://)
56332204 daemon: listener initialized ldap://
56332204 daemon_init: 2 listeners opened
56332205 slapd init: initiated server.
56332205 slap_sasl_init: initialized!
56332205 bdb_back_initialize: initialize BDB backend
56332205 bdb_back_initialize: Berkeley DB 4.7.25: (September 22, 2015)
56332205 hdb_back_initialize: initialize HDB backend
56332205 hdb_back_initialize: Berkeley DB 4.7.25: (September 22, 2015)
56332205 mdb_back_initialize: initialize MDB backend
56332205 mdb_back_initialize: LMDB 0.9.16: (August 14, 2015)
56332205 backend_startup_one: starting "cn=3Dconfig"
56332205 ldif_read_file: read entry file: "/etc/openldap/slapd.d/cn=3Dconfi=
g.ldif"

CUT CUT CUT

56332764 connection_get(19): got connid=3D1000
56332764 connection_read(19): checking for input on id=3D1000
ber_get_next
ber_get_next: tag 0x30 len 192 contents:
56332764 op tag 0x66, time 1446192996
ber_get_next
56332764 conn=3D1000 op=3D45578 do_modify
ber_scanf fmt ({m) ber:
ber_scanf fmt ({e{m[W]}}) ber:
56332764 =3D> get_ctrls
ber_scanf fmt ({m) ber:
56332764 =3D> get_ctrls: oid=3D"2.16.840.1.113730.3.4.2" (noncritical)
56332764 <=3D get_ctrls: n=3D1 rc=3D0 err=3D""
56332764 >>> dnPrettyNormal:
<cn=3D1000000000000_O2HP,ou=3DRelationship,dc=3DHPD,o=3Dvivates,c=3Dch>
56332764 <<< dnPrettyNormal:
<cn=3D1000000000000_O2HP,ou=3DRelationship,dc=3DHPD,o=3Dvivates,c=3Dch>,
<cn=3D1000000000000_o2hp,ou=3Drelationship,dc=3Dhpd,o=3Dvivates,c=3Dch>
56332764 >>> dnPretty: <cn=3Dentry.xxx,ou=3DHCProfessional,dc=3DHPD,o=3Dviv=
ates,c=3Dch>
56332764 <<< dnPretty: <cn=3Dentry.xxx,ou=3DHCProfessional,dc=3DHPD,o=3Dviv=
ates,c=3Dch>
56332764 >>> dnNormalize: <cn=3Dentry.xxx,ou=3DHCProfessional,dc=3DHPD,o=3D=
vivates,c=3Dch>
56332764 <<< dnNormalize: <cn=3Dentry.xxx,ou=3Dhcprofessional,dc=3Dhpd,o=3D=
vivates,c=3Dch>
56332764 bdb_dn2entry("cn=3D1000000000000_o2hp,ou=3Drelationship,dc=3Dhpd,o=
=3Dvivates,c=3Dch")
56332764 bdb_entry_get: rc=3D0
56332764 syncprov_matchops: sid 000 fscope 1 rc 6
56332764 =3D=3D> unique_modify
<cn=3D1000000000000_O2HP,ou=3DRelationship,dc=3DHPD,o=3Dvivates,c=3Dch>
56332764 bdb_dn2entry("cn=3D1000000000000_o2hp,ou=3Drelationship,dc=3Dhpd,o=
=3Dvivates,c=3Dch")
56332764 bdb_entry_get: rc=3D0
56332764 unique_modify: administrative bypass, skipping
56332764 bdb_modify: txn1 id: 80005ad3
56332764 bdb_dn2entry("cn=3D1000000000000_o2hp,ou=3Drelationship,dc=3Dhpd,o=
=3Dvivates,c=3Dch")
56332764 bdb_modify: txn2 id: 80005ad4
56332764 bdb_modify_internal: 0x00000288:
cn=3D1000000000000_O2HP,ou=3DRelationship,dc=3DHPD,o=3Dvivates,c=3Dch
56332764 oc_check_required entry
(cn=3D1000000000000_O2HP,ou=3DRelationship,dc=3DHPD,o=3Dvivates,c=3Dch),
objectClass "VivatesHCRelationship"
56332764 oc_check_allowed type "relationshipType"
56332764 oc_check_allowed type "owner"
56332764 oc_check_allowed type "objectClass"
56332764 oc_check_allowed type "cn"
56332764 oc_check_allowed type "member"
56332764 oc_check_allowed type "structuralObjectClass"
56332764 oc_check_allowed type "entryUUID"
56332764 oc_check_allowed type "creatorsName"
56332764 oc_check_allowed type "createTimestamp"
56332764 oc_check_allowed type "entryCSN"
56332764 oc_check_allowed type "modifiersName"
56332764 oc_check_allowed type "modifyTimestamp"
56332764 =3D> key_change(DELETE,288)
56332764 <=3D key_change 0
56332764 =3D> key_change(ADD,288)
56332764 <=3D key_change 0
56332764 =3D> entry_encode(0x00000288):
cn=3D1000000000000_O2HP,ou=3DRelationship,dc=3DHPD,o=3Dvivates,c=3Dch
56332764 ch_malloc of 824480 bytes failed
slapd: ch_malloc.c:57: ch_malloc: Assertion `0' failed.

Program received signal SIGABRT, Aborted.
[Switching to Thread 0xa01f8b70 (LWP 2339)]
0x00130424 in __kernel_vsyscall ()
Missing separate debuginfos, use: debuginfo-install
libtool-ltdl-2.2.6-15.5.el6.i686
(gdb) bt
#0  0x00130424 in __kernel_vsyscall ()
#1  0x003a9871 in raise (sig=3D6) at ../nptl/sysdeps/unix/sysv/linux/raise.=
c:64
#2  0x003ab14a in abort () at abort.c:92
#3  0x003a2b8b in __assert_fail_base (fmt=3D0x4d7d58 "%s%s%s:%u:
%s%sAssertion `%s' failed.\n%n", assertion=3D0x81b75e9 "0",
file=3D0x819d0e7 "ch_malloc.c", line=3D57, function=3D0x819d17f "ch_malloc"=
)
at assert.c:96
#4  0x003a2c46 in __assert_fail (assertion=3D0x81b75e9 "0",
file=3D0x819d0e7 "ch_malloc.c", line=3D57, function=3D0x819d17f "ch_malloc"=
)
at assert.c:105
#5  0x0809470a in ch_malloc (size=3D824480) at ch_malloc.c:57
#6  0x08082b71 in entry_encode (e=3D0xa01f6bac, bv=3D0xa01f6a14) at entry.c=
:710
#7  0x0813e2d5 in bdb_id2entry_put (be=3D<value optimized out>,
tid=3D<value optimized out>, e=3D<value optimized out>, flag=3D0) at
id2entry.c:54
#8  0x080f1b0c in bdb_modify (op=3D0xa21b62d8, rs=3D0xa01f80dc) at modify.c=
:712
#9  0x080e41f3 in overlay_op_walk (op=3D0xa21b62d8, rs=3D0xa01f80dc,
which=3Dop_modify, oi=3D0x833f368, on=3D0x0) at backover.c:677
#10 0x080e4cd9 in over_op_func (op=3D0xa21b62d8, rs=3D0xa01f80dc,
which=3Dop_modify) at backover.c:730
#11 0x08091561 in fe_op_modify (op=3D0xa21b62d8, rs=3D0xa01f80dc) at modify=
.c:303
#12 0x08091fd7 in do_modify (op=3D0xa21b62d8, rs=3D0xa01f80dc) at modify.c:=
177
#13 0x080784ac in connection_operation (ctx=3D0xa01f81ec,
arg_v=3D0xa21b62d8) at connection.c:1158
#14 0x08078d47 in connection_read_thread (ctx=3D0xa01f81ec, argv=3D0x13)
at connection.c:1294
#15 0x0013c7d4 in ldap_int_thread_pool_wrapper (xpool=3D0x8287b80) at tpool=
.c:696
#16 0x0036ab39 in start_thread (arg=3D0xa01f8b70) at pthread_create.c:301
#17 0x00461c2e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:133
(gdb) bt full
#0  0x00130424 in __kernel_vsyscall ()
No symbol table info available.
#1  0x003a9871 in raise (sig=3D6) at ../nptl/sysdeps/unix/sysv/linux/raise.=
c:64
        resultvar =3D <value optimized out>
        resultvar =3D <value optimized out>
        pid =3D 5312500
        selftid =3D 2339
#2  0x003ab14a in abort () at abort.c:92
        save_stage =3D 2
        act =3D {__sigaction_handler =3D {sa_handler =3D 0xbe728f38,
sa_sigaction =3D 0xbe728f38}, sa_mask =3D {__val =3D {5312500, 64, 1,
4125602, 2686412784, 0, 104, 57, 2718957584, 5312500, 57, 56,
2686412956, 4097042, 3195178816, 57, 2686412996, 3195178816, 0,
4222451712,
              3195178816, 3195178816, 3195178816, 3195178816,
3195178872, 3195178916, 3195178816, 3195178916, 0, 0, 0, 0}}, sa_flags
=3D 0, sa_restorer =3D 0x4d54d8 <_libc_intl_domainname>}
        sigs =3D {__val =3D {32, 0 <repeats 31 times>}}
#3  0x003a2b8b in __assert_fail_base (fmt=3D0x4d7d58 "%s%s%s:%u:
%s%sAssertion `%s' failed.\n%n", assertion=3D0x81b75e9 "0",
file=3D0x819d0e7 "ch_malloc.c", line=3D57, function=3D0x819d17f "ch_malloc"=
)
at assert.c:96
        str =3D 0xbe728f40 ""
        total =3D 4096
#4  0x003a2c46 in __assert_fail (assertion=3D0x81b75e9 "0",
file=3D0x819d0e7 "ch_malloc.c", line=3D57, function=3D0x819d17f "ch_malloc"=
)
at assert.c:105
No locals.
#5  0x0809470a in ch_malloc (size=3D824480) at ch_malloc.c:57
        new =3D <value optimized out>
        __PRETTY_FUNCTION__ =3D "ch_malloc"
#6  0x08082b71 in entry_encode (e=3D0xa01f6bac, bv=3D0xa01f6a14) at entry.c=
:710
        len =3D 824480
        dnlen =3D 59
        ndnlen =3D 59
        i =3D <value optimized out>
        nattrs =3D <value optimized out>
        nvals =3D <value optimized out>
        a =3D <value optimized out>
        ptr =3D <value optimized out>
        __PRETTY_FUNCTION__ =3D "entry_encode"
#7  0x0813e2d5 in bdb_id2entry_put (be=3D<value optimized out>,
tid=3D<value optimized out>, e=3D<value optimized out>, flag=3D0) at
id2entry.c:54
        bdb =3D <value optimized out>
        db =3D 0x82c5848
        key =3D {data =3D 0xa01f6a1c, size =3D 4, ulen =3D 0, dlen =3D 0, d=
off =3D
0, app_data =3D 0x0, flags =3D 0}
        data =3D {data =3D 0x1, size =3D 137288968, ulen =3D 0, dlen =3D
2638157064, doff =3D 2686413844, app_data =3D 0x0, flags =3D 2638157064}
        bv =3D {bv_len =3D 824480, bv_val =3D 0x37c57660 "cn=3Droot,o=3Dviv=
ates,c=3Dch"}
        rc =3D <value optimized out>
        nid =3D 2281832448
#8  0x080f1b0c in bdb_modify (op=3D0xa21b62d8, rs=3D0xa01f80dc) at modify.c=
:712
        bdb =3D 0x833fbe0
        e =3D 0x8373a64
        ei =3D 0x83e08b0
        manageDSAit =3D 2
        textbuf =3D
"\377\023\000\000\233\353\064\242\000\000\000\000\000\000\000\000\024\061\2=
13\000\330b\033\242\274\070\037\b8l\037\240,\032\213\000\330b\033\242d:7\b\=
000\000\000\000\210\316\064\b",
'\000' <repeats 16 times>"\200, ", '\000' <repeats 11 times>,
"\026\000\000\000X\353\064\242\026\000\000\000\210\316\064\b\000\000\000\00=
0\000\000\000\000<k\037\240",
'\000' <repeats 20 times>"\220,
\317\064\b\000\000\000\000\000\000\000\000\300s=CF=9F\260c\033\242f\000\000=
\000d'3V\a\000\000\000\260l\037\240;\000\000\000`r=CF=9F;\000\000\000\020s=
=CF=9F\350.\335j",
'\000' <repeats 71 times>
        ltid =3D 0x9d3f1508
        lt2 =3D 0x9d3136d0
        opinfo =3D {boi_oe =3D {oe_next =3D {sle_next =3D 0x0}, oe_key =3D
0x833fbe0}, boi_txn =3D 0x9d3f1508, boi_locks =3D 0x0, boi_err =3D 0,
boi_acl_cache =3D 0 '\000', boi_flag =3D 0 '\000'}
        dummy =3D {e_id =3D 648, e_name =3D {bv_len =3D 59, bv_val =3D 0x83=
e1470
"cn=3D1", '0' <repeats 12 times>,
"_O2HP,ou=3DRelationship,dc=3DHPD,o=3Dvivates,c=3Dch"}, e_nname =3D {bv_len=
 =3D
59,
            bv_val =3D 0x83e0700 "cn=3D1", '0' <repeats 12 times>,
"_o2hp,ou=3Drelationship,dc=3Dhpd,o=3Dvivates,c=3Dch"}, e_attrs =3D 0xbc17e=
c14,
e_ocflags =3D 65792, e_bv =3D {bv_len =3D 0, bv_val =3D 0x0}, e_private =3D
0x83e08b0}
        lock =3D {off =3D 120504, ndx =3D 605, gen =3D 11022, mode =3D DB_L=
OCK_READ}
        num_retries =3D 0
        preread_ctrl =3D 0x0
        postread_ctrl =3D 0x0
        ctrls =3D {0x0, 0x16, 0x9ef978e8, 0x0, 0x0, 0x0}
        num_ctrls =3D 0
        rc =3D <value optimized out>
#9  0x080e41f3 in overlay_op_walk (op=3D0xa21b62d8, rs=3D0xa01f80dc,
which=3Dop_modify, oi=3D0x833f368, on=3D0x0) at backover.c:677
        func =3D <value optimized out>
        rc =3D <value optimized out>
#10 0x080e4cd9 in over_op_func (op=3D0xa21b62d8, rs=3D0xa01f80dc,
which=3Dop_modify) at backover.c:730
        oi =3D <value optimized out>
        on =3D 0x834cc78
        be =3D <value optimized out>
---Type <return> to continue, or q <return> to quit---
        db =3D {bd_info =3D 0x81f329c, bd_self =3D 0x834c400, be_ctrls =3D
"\000\000\000\001\001\001\000\001\000\000\001\000\000\001\001\000\001\000\0=
00\001",
'\000' <repeats 12 times>, "\001", be_flags =3D 2312, be_restrictops =3D
0, be_requires =3D 0, be_ssf_set =3D {sss_ssf =3D 0,
            sss_transport =3D 0, sss_tls =3D 0, sss_sasl =3D 0,
sss_update_ssf =3D 0, sss_update_transport =3D 0, sss_update_tls =3D 0,
sss_update_sasl =3D 0, sss_simple_bind =3D 0}, be_suffix =3D 0x82b1f10,
be_nsuffix =3D 0x834c500, be_schemadn =3D {bv_len =3D 0, bv_val =3D 0x0},
          be_schemandn =3D {bv_len =3D 0, bv_val =3D 0x0}, be_rootdn =3D
{bv_len =3D 22, bv_val =3D 0x8301ea0 "cn=3Droot,o=3Dvivates,c=3Dch"}, be_ro=
otndn
=3D {bv_len =3D 22, bv_val =3D 0x834c548 "cn=3Droot,o=3Dvivates,c=3Dch"},
be_rootpw =3D {bv_len =3D 6, bv_val =3D 0x8340368 "etoile"},
          be_max_deref_depth =3D 15, be_def_limit =3D {lms_t_soft =3D 3600,
lms_t_hard =3D 0, lms_s_soft =3D 500, lms_s_hard =3D 0, lms_s_unchecked =3D
-1, lms_s_pr =3D 0, lms_s_pr_hide =3D 0, lms_s_pr_total =3D 0}, be_limits =
=3D
0x0, be_acl =3D 0x0, be_dfltaccess =3D ACL_READ,
          be_extra_anlist =3D 0x0, be_update_ndn =3D {bv_len =3D 0, bv_val =
=3D
0x0}, be_update_refs =3D 0x0, be_pending_csn_list =3D 0x82ed968,
be_pcl_mutex =3D {__data =3D {__lock =3D 0, __count =3D 0, __owner =3D 0, _=
_kind
=3D 0, __nusers =3D 0, {__spins =3D 0, __list =3D {__next =3D 0x0}}},
            __size =3D '\000' <repeats 23 times>, __align =3D 0},
be_syncinfo =3D 0x0, be_pb =3D 0x0, be_cf_ocs =3D 0x81f58c0, be_private =3D
0x833fbe0, be_next =3D {stqe_next =3D 0x834c8e0}}
        cb =3D {sc_next =3D 0x0, sc_response =3D 0x80e3f10
<over_back_response>, sc_cleanup =3D 0, sc_writewait =3D 0, sc_private =3D
0x833f368}
        sc =3D <value optimized out>
        rc =3D 32768
        __PRETTY_FUNCTION__ =3D "over_op_func"
#11 0x08091561 in fe_op_modify (op=3D0xa21b62d8, rs=3D0xa01f80dc) at modify=
.c:303
        update =3D <value optimized out>
        repl_user =3D <value optimized out>
        op_be =3D <value optimized out>
        bd =3D 0x81f8ac0
        textbuf =3D
"\000\000\000\000\000\000\000\000hn\037\240\342\350\b\b\001\000\000\000\001=
\000\000\000b\300\031\b\bs\275\237\000\000\000\000\000\000\000\000\br=CF=9F=
\220\201Z\274\270\355,\b\340\203Z\274\310n\037\240?M\t\b\002\000\000\000X\3=
11&\b\200\324'\b\340\203Z\274\220\201Z\274\000\000\000\000\310n\037\240\030=
\000\000\000\020\000\020\242\034\000\020\242\001\000\000\000\300\351\b\b\02=
0\000\020\242\000\000\000\000\250n\037\240\236=3D?\000\020\000\020\242\030\=
000\000\000\210\201Z\274$\346\027\000\000\000\000\000\000\000\000\000I\000\=
000\000\360`\275\237\020\000\000\000\270\302\032\242\000\000\000\000\210\36=
0\062\242\000\000\000\000\000\000\000\000(o\037\240\261\020\t\b\002\000\000=
\000\210\360\062\242\200\324'\b\340\203Z\274\220\201Z\274\000\000\000\000\3=
74\302\031\b`r=CF=9F\020s=CF=9F\350.\335j\210\360\062\242\220\201Z\274\241\=
204Z\274I\000\000\000\360`\275\237@r=CF=9F"
#12 0x08091fd7 in do_modify (op=3D0xa21b62d8, rs=3D0xa01f80dc) at modify.c:=
177
        dn =3D {bv_len =3D 59, bv_val =3D 0xbc5a8402 "cn=3D1", '0' <repeats=
 12
times>, "_O2HP,ou=3DRelationship,dc=3DHPD,o=3Dvivates,c=3Dch"}
        textbuf =3D
"\001\000\000\000\201\000\000\000\346\033G\000\250\177\037\240\370\004\060\=
242\000\262\205\273\250\177\037\240\004\026\067\000\022\026\067\000\233\275=
\027\000\023\000\000\000\v\262\205\273\b\000\000\000\374\200\037\240\330c\0=
33\242$\346\027\000x\200\037\240\352\256\027\000\340\004\060\242\v\262\205\=
273\b\000\000\000P\207>\000P\207>\000\340\177\037\240\344\211\031\b\374\200=
\037\240\330c\033\242\000\000\000\000\340\177\037\240\377\000\000\000\001\2=
00\255\373\000\000\000\000\330c\033\242\330c\033\242\330c\033\242\352c\033\=
242\327d\033\242\330b\033\242\270\302\032\242\004\000\020\000\210\200\037\2=
40)\370\f\b\000\000\000\000\270\302\032\242l\200\037\240\000\000\000\000HW\=
356\006\000\000\000\000\000\000\000\000^V\027\000\354\201\037\240Xe\033\242=
\031\000\000\000\000\000\000\000d\240\370\267\030\201\037\240\210\200\037\2=
40As\a\b\267\303\066\000\020s\a\b#\t\000\000\274\020\027\000d\240\370\267d\=
240",
<incomplete sequence \370\267>
        tmp =3D <value optimized out>
#13 0x080784ac in connection_operation (ctx=3D0xa01f81ec,
arg_v=3D0xa21b62d8) at connection.c:1158
        rc =3D 80
        cancel =3D <value optimized out>
        op =3D 0xa21b62d8
        rs =3D {sr_type =3D REP_RESULT, sr_tag =3D 0, sr_msgid =3D 0, sr_er=
r =3D
0, sr_matched =3D 0x0, sr_text =3D 0x0, sr_ref =3D 0x0, sr_ctrls =3D 0x0,
sr_un =3D {sru_search =3D {r_entry =3D 0x0, r_attr_flags =3D 0,
r_operational_attrs =3D 0x0, r_attrs =3D 0x0, r_nentries =3D 0, r_v2ref =3D
0x0},
            sru_sasl =3D {r_sasldata =3D 0x0}, sru_extended =3D {r_rspoid =
=3D
0x0, r_rspdata =3D 0x0}}, sr_flags =3D 0}
        tag =3D 102
        opidx =3D SLAP_OP_MODIFY
        conn =3D 0xb7f8a064
        memctx =3D 0xa21ac2b8
        memctx_null =3D 0x0
        memsiz =3D 1048576
        __PRETTY_FUNCTION__ =3D "connection_operation"
#14 0x08078d47 in connection_read_thread (ctx=3D0xa01f81ec, argv=3D0x13)
at connection.c:1294
        cri =3D {op =3D 0xa21b62d8, func =3D 0, arg =3D 0x0, ctx =3D 0xa01f=
81ec,
nullop =3D 0}
        s =3D 19
#15 0x0013c7d4 in ldap_int_thread_pool_wrapper (xpool=3D0x8287b80) at tpool=
.c:696
        pool =3D 0x8287b80
        task =3D 0xa2d00518
        work_list =3D <value optimized out>
        ctx =3D {ltu_id =3D 2686421872, ltu_key =3D {{ltk_key =3D 0x8077310=
,
ltk_data =3D 0xa21abbb0, ltk_free =3D 0x80773e0 <conn_counter_destroy>},
{ltk_key =3D 0x80cf660, ltk_data =3D 0xa21ac2b8, ltk_free =3D 0x80cf690
<slap_sl_mem_destroy>}, {ltk_key =3D 0x82ed978,
              ltk_data =3D 0xa21ab928, ltk_free =3D 0x81336b0
<bdb_reader_free>}, {ltk_key =3D 0x808c910, ltk_data =3D 0x0, ltk_free =3D
0x808c720 <slap_op_q_destroy>}, {ltk_key =3D 0x80f6260, ltk_data =3D
0x9f2ff008, ltk_free =3D 0x80f6320 <search_stack_free>}, {ltk_key =3D 0x0,
              ltk_data =3D 0x0, ltk_free =3D 0} <repeats 27 times>}}
        kctx =3D <value optimized out>
        keyslot =3D 602
        hash =3D <value optimized out>
        __PRETTY_FUNCTION__ =3D "ldap_int_thread_pool_wrapper"
#16 0x0036ab39 in start_thread (arg=3D0xa01f8b70) at pthread_create.c:301
        __res =3D <value optimized out>
        __ignore1 =3D 2339
        __ignore2 =3D 6
        pd =3D 0xa01f8b70
        now =3D <value optimized out>
        unwind_buf =3D {cancel_jmp_buf =3D {{jmp_buf =3D {3653620, 0,
4001536, -1608547176, 1573480548, 261634852}, mask_was_saved =3D 0}},
priv =3D {pad =3D {0x0, 0x0, 0x0, 0x0}, data =3D {prev =3D 0x0, cleanup =3D=
 0x0,
canceltype =3D 0}}}
        not_first_call =3D <value optimized out>
        pagesize_m1 =3D <value optimized out>
        sp =3D <value optimized out>
        freesize =3D <value optimized out>
#17 0x00461c2e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:133
---Type <return> to continue, or q <return> to quit---
No locals.
--- end gdb session ---


Cheers,

 Maurizio

2015-10-29 23:00 GMT+01:00 Quanah Gibson-Mount <quanah@zimbra.com>:
> --On Thursday, October 29, 2015 11:25 AM +0100 Maurizio Lattuada
> <maurizio.lattuada@gmail.com> wrote:
>
>> Hello Quanah,
>> thanks for the hint.
>>
>> I cloned the repository and checked out the branch you told me:
>>
>> [root@ibb0301 openldap]# git checkout OPENLDAP_REL_ENG_2_4
>> Already on 'OPENLDAP_REL_ENG_2_4'
>> [root@ibb0301 openldap]# git branch
>> * OPENLDAP_REL_ENG_2_4
>>   master
>>
>> Then, after compiling the whole stuff, I started it as usual with GDB
>> and with my client application active (synch via syncprov).
>> Here again I got a failure due to failed malloc (returns NULL). As
>> that moment, the %MEM shown by top was about 66% (it increased till
>> here up to 1% every 10s). Please consider that, before starting gdb, I
>> rebooted my server (4 GB RAM, 2 GB swap)
>
>
> If you add syncprov overlay to the other data db, do you have the same
> issue?
>
> Also, if you make it a single DB (using a suffix of "") rather than two
> distinct DBs, do you still hit the issue?
>
>
> --Quanah
>
>
> --
>
> Quanah Gibson-Mount
> Platform Architect
> Zimbra, Inc.
> --------------------
> Zimbra ::  the leader in open source messaging and collaboration



--=20
 Maurizio Lattuada
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