2.4.44 + ITS 8432 patch segfault in modify_add_values

["Paul B. Henson" <henson@acm.org>]

So I've gotten a total of 5 crashes so far since I updated my production
environment to 2.4.44 with a locally applied ITS 8432 patch. I finally
went ahead and built a debug enabled binary to take a better look at the
core files.

They all have the same signature, SIGSEGV in modify_add_values; and in all of
them, "&mod->sm_values[mod->sm_numvals]", is NULL. I included a full
backtrace from one of the cores. Any thoughts as to what might be going on
here?

Thanks...


#0  0x0000000000485c61 in modify_add_values (e=e@entry=0x7fbdef662480, mod=mod@entry=0x7fbdd0000980, 
    permissive=0, text=text@entry=0x7fbdef6629a0, 
    textbuf=textbuf@entry=0x7fbdef6624d0 "modify/delete: eduPersonAffiliation: no such attribute", 
    textlen=textlen@entry=256)
    at /var/lib/portage/tmp/portage/net-nds/openldap-2.4.44-r1/work/openldap-2.4.44/servers/slapd/mods.c:61
61              if ( !BER_BVISNULL( &mod->sm_values[mod->sm_numvals] )) {
(gdb) print &mod->sm_values[mod->sm_numvals]
$1 = (BerValue *) 0x0



#0  0x0000000000485c61 in modify_add_values (e=e@entry=0x7f3a720f3480, mod=mod@entry=0x7f3a6c0013a0, 
    permissive=0, text=text@entry=0x7f3a720f39a0, 
    textbuf=textbuf@entry=0x7f3a720f34d0 "modify/delete: eduPersonAffiliation: no such attribute", 
    textlen=textlen@entry=256)
    at /var/lib/portage/tmp/portage/net-nds/openldap-2.4.44-r1/work/openldap-2.4.44/servers/slapd/mods.c:61
61              if ( !BER_BVISNULL( &mod->sm_values[mod->sm_numvals] )) {
(gdb) print &mod->sm_values[mod->sm_numvals]
$1 = (BerValue *) 0x0



#0  0x0000000000485c61 in modify_add_values (e=e@entry=0x7fa36fffd480, mod=mod@entry=0x7fa358000980, 
    permissive=0, text=text@entry=0x7fa36fffd9a0, 
    textbuf=textbuf@entry=0x7fa36fffd4d0 "modify/delete: eduPersonAffiliation: no such attribute", 
    textlen=textlen@entry=256)
    at /var/lib/portage/tmp/portage/net-nds/openldap-2.4.44-r1/work/openldap-2.4.44/servers/slapd/mods.c:61
61              if ( !BER_BVISNULL( &mod->sm_values[mod->sm_numvals] )) {
(gdb) print &mod->sm_values[mod->sm_numvals]
$1 = (BerValue *) 0x0



#0  0x0000000000485c61 in modify_add_values (e=e@entry=0x7f7e249f8480, mod=mod@entry=0x7f7e10001f00, 
    permissive=0, text=text@entry=0x7f7e249f89a0, 
    textbuf=textbuf@entry=0x7f7e249f84d0 "modify/delete: eduPersonAffiliation: no such attribute", 
    textlen=textlen@entry=256)
    at /var/lib/portage/tmp/portage/net-nds/openldap-2.4.44-r1/work/openldap-2.4.44/servers/slapd/mods.c:61
61              if ( !BER_BVISNULL( &mod->sm_values[mod->sm_numvals] )) {
(gdb) print &mod->sm_values[mod->sm_numvals]
$1 = (BerValue *) 0x0



#0  0x0000000000485c61 in modify_add_values (e=e@entry=0x7f50727fb480, mod=mod@entry=0x7f50600019a0, 
    permissive=0, text=text@entry=0x7f50727fb9a0, 
    textbuf=textbuf@entry=0x7f50727fb4d0 "modify/delete: eduPersonAffiliation: no such attribute", 
    textlen=textlen@entry=256)
    at /var/lib/portage/tmp/portage/net-nds/openldap-2.4.44-r1/work/openldap-2.4.44/servers/slapd/mods.c:61
61              if ( !BER_BVISNULL( &mod->sm_values[mod->sm_numvals] )) {
(gdb) print &mod->sm_values[mod->sm_numvals]
$1 = (BerValue *) 0x0




(gdb) bt full
#0  0x0000000000485c61 in modify_add_values (e=e@entry=0x7f50727fb480, mod=mod@entry=0x7f50600019a0, 
    permissive=0, text=text@entry=0x7f50727fb9a0, 
    textbuf=textbuf@entry=0x7f50727fb4d0 "modify/delete: eduPersonAffiliation: no such attribute", 
    textlen=textlen@entry=256)
    at /var/lib/portage/tmp/portage/net-nds/openldap-2.4.44-r1/work/openldap-2.4.44/servers/slapd/mods.c:61
        rc = <optimized out>
        op = 0x4fe045 "add"
        a = <optimized out>
        pmod = {sm_desc = <optimized out>, sm_values = 0x0, sm_nvalues = 0x0, sm_numvals = <optimized out>, 
          sm_op = <optimized out>, sm_flags = <optimized out>, sm_type = {bv_len = <optimized out>, 
            bv_val = <optimized out>}}
        __PRETTY_FUNCTION__ = "modify_add_values"
#1  0x00007f526dfccd0c in mdb_modify_internal (op=op@entry=0x7f50727fc600, tid=tid@entry=0x1088a90, 
    modlist=0x7f5060001960, e=e@entry=0x7f50727fb480, text=text@entry=0x7f50727fb9a0, 
    textbuf=textbuf@entry=0x7f50727fb4d0 "modify/delete: eduPersonAffiliation: no such attribute", 
    textlen=256)
    at /var/lib/portage/tmp/portage/net-nds/openldap-2.4.44-r1/work/openldap-2.4.44/servers/slapd/back-mdb/mod
ify.c:137
        rc = <optimized out>
        err = <optimized out>
        mod = 0x7f50600019a0
        ml = 0x7f50600019a0
        save_attrs = 0x7f5060004270
        ap = 0x7f5272f53010
        glue_attr_delete = <optimized out>
        got_delete = 0
        __PRETTY_FUNCTION__ = "mdb_modify_internal"
#2  0x00007f526dfce134 in mdb_modify (op=0x7f50727fc600, rs=0x7f50727fb980)
    at /var/lib/portage/tmp/portage/net-nds/openldap-2.4.44-r1/work/openldap-2.4.44/servers/slapd/back-mdb/mod
ify.c:624
        mdb = 0x7f5272f53010
        e = 0x7f5060004220
        manageDSAit = <optimized out>
        textbuf = "modify/delete: eduPersonAffiliation: no such attribute\000\377\037\000\000\000\000\000\000\000@\003\315\000\000\000\000\000\200\271\177rP\177\000\000\021\000\000\000\000\000\000\000.,\020`P\177\000\000
\360o\315\000\000\000\000\000\360\002\315\000\000\000\000\000\037\000\000\000\000\000\000\000\000\306\177rP\17
7\000\000\300\064\000`P\177\000\000\000\000\000\000\000\000\000\000\360o\315\000\000\000\000\000 T\315\000\000
\000\000\000\000\306\177rP\177\000\000\270\232N\000\000\000\000\000 l\315\000\000\000\000\000\350\064\000`P\17
7\000\000\000\306\177rP\177\000\000\000\000\000\000\000\000\000\000"...
        txn = 0x1088a90
        opinfo = {moi_oe = {oe_next = {sle_next = 0x7f50727fb930}, oe_key = 0x7f5272f53010}, 
          moi_txn = 0x1088a90, moi_ref = 1, moi_flag = 0 '\000'}
        moi = 0x7f50727fb430
        dummy = {e_id = 66196, e_name = {bv_len = 40, 
            bv_val = 0x7f50600041e8 "uid=aapriest,ou=user,dc=csupomona,dc=edu"}, e_nname = {bv_len = 40, 
            bv_val = 0x7f5060004d18 "uid=aapriest,ou=user,dc=csupomona,dc=edu"}, e_attrs = 0xd202e8, 
          e_ocflags = 256, e_bv = {bv_len = 0, bv_val = 0x0}, e_private = 0x7f5060004220}
        preread_ctrl = 0x0
        postread_ctrl = 0x0
        ctrls = {0x0, 0x0, 0x0, 0x0, 0x0, 0x7f50727fb250}
        num_ctrls = 0
        numads = 55
#3  0x000000000049c2ea in overlay_op_walk (op=op@entry=0x7f50727fc600, rs=0x7f50727fb980, which=op_modify, 
    oi=0xcd6a40, on=<optimized out>)
    at /var/lib/portage/tmp/portage/net-nds/openldap-2.4.44-r1/work/openldap-2.4.44/servers/slapd/backover.c:6
77
        func = <optimized out>
        rc = <optimized out>
#4  0x000000000049c441 in over_op_func (op=0x7f50727fc600, rs=<optimized out>, which=<optimized out>)
    at /var/lib/portage/tmp/portage/net-nds/openldap-2.4.44-r1/work/openldap-2.4.44/servers/slapd/backover.c:7
30
        oi = <optimized out>
        on = <optimized out>
        be = 0xcd0ac0
        db = {bd_info = 0x7f526e1e6d40 <bi>, bd_self = 0xcd0ac0, 
          be_ctrls = "\000\001\001\001\000\001\000\000\001\000\000\001\001\000\001\000\000\001", '\000' <repea
ts 14 times>, "\001", be_flags = 563464, be_restrictops = 0, be_requires = 0, be_ssf_set = {sss_ssf = 0, 
            sss_transport = 0, sss_tls = 0, sss_sasl = 0, sss_update_ssf = 0, sss_update_transport = 0, 
            sss_update_tls = 0, sss_update_sasl = 0, sss_simple_bind = 64}, be_suffix = 0xcd0880, 
          be_nsuffix = 0xca5c90, be_schemadn = {bv_len = 0, bv_val = 0x0}, be_schemandn = {bv_len = 0, 
            bv_val = 0x0}, be_rootdn = {bv_len = 31, bv_val = 0xcd02f0 "cn=ldaproot,dc=csupomona,dc=edu"}, 
          be_rootndn = {bv_len = 31, bv_val = 0xcd0340 "cn=ldaproot,dc=csupomona,dc=edu"}, be_rootpw = {
            bv_len = 38, bv_val = 0xca49a0 "{SSHA}XXXXXXXXXXXXXXXXXXXXXXX"}, 
          be_max_deref_depth = 15, be_def_limit = {lms_t_soft = 3600, lms_t_hard = 0, lms_s_soft = -1, 
            lms_s_hard = 0, lms_s_unchecked = -1, lms_s_pr = 0, lms_s_pr_hide = 0, lms_s_pr_total = 0}, 
          be_limits = 0xca5840, be_acl = 0xcd1c80, be_dfltaccess = ACL_READ, be_extra_anlist = 0x0, 
          be_update_ndn = {bv_len = 0, bv_val = 0x0}, be_update_refs = 0x0, be_pending_csn_list = 0xf85dc0, 
          be_pcl_mutex = {__data = {__lock = 0, __count = 0, __owner = 0, __nusers = 0, __kind = 0, 
              __spins = 0, __elision = 0, __list = {__prev = 0x0, __next = 0x0}}, 
            __size = '\000' <repeats 39 times>, __align = 0}, be_syncinfo = 0xcd75c0, be_pb = 0x0, 
          be_cf_ocs = 0x7f526e1e68c0 <mdbocs>, be_private = 0x7f5272f53010, be_next = {stqe_next = 0x0}}
        cb = {sc_next = 0x7f50727fb950, sc_response = 0x49b650 <over_back_response>, sc_cleanup = 0x0, 
          sc_writewait = 0x0, sc_private = 0xcd6a40}
        sc = <optimized out>
        rc = 32768
        __PRETTY_FUNCTION__ = "over_op_func"
#5  0x000000000048d938 in syncrepl_message_to_op (si=si@entry=0xcd8520, op=op@entry=0x7f50727fc600, 
    msg=0x7f5060102940)
    at /var/lib/portage/tmp/portage/net-nds/openldap-2.4.44-r1/work/openldap-2.4.44/servers/slapd/syncrepl.c:2
394
        oes = {oe = {oe_next = {sle_next = 0x0}, oe_key = 0x48cd60 <syncrepl_message_to_op>}, 
          oe_si = 0xcd8520}
        ber = 0x7f50604b5390
        modlist = 0x7f5060496f60
        ls = 0x778940 <accesslog_sc>
        rs = {sr_type = REP_RESULT, sr_tag = 0, sr_msgid = 0, sr_err = 0, sr_matched = 0x0, 
          sr_text = 0x7f50727fb4d0 "modify/delete: eduPersonAffiliation: no such attribute", sr_ref = 0x0, 
          sr_ctrls = 0x0, sr_un = {sru_search = {r_entry = 0x0, r_attr_flags = 0, r_operational_attrs = 0x0, 
              r_attrs = 0x0, r_nentries = 0, r_v2ref = 0x0}, sru_sasl = {r_sasldata = 0x0}, sru_extended = {
              r_rspoid = 0x0, r_rspdata = 0x0}}, sr_flags = 0}
        cb = {sc_next = 0x7f5060003490, sc_response = 0x48c8d0 <null_callback>, sc_cleanup = 0x0, 
          sc_writewait = 0x0, sc_private = 0x0}
        text = 0x0
        txtbuf = "@\277\177rP\177\000\000\020\274\177rP\177\000\000X\371P\000\000\000\000\000\266P\246rR\177\0
00\000@\277\177rP\177\000\000X\371P\000\000\000\000\000\240\272\177rP\177\000\000\060\275\246rR\177\000\000X\3
71P\000\000\000\000\000@^\246rR\177\000\000\000\000\000\000\000\000\000\000\002\000\000\000P\177\000\000\020\0
00\000\000\000\000\000\000\260\272\177rP\177\000\000\377\377\377\377\377\377\377\377&\000\000\017\000\000\000\
000\020\t\020\230P\177\000\000x\215I`P\177\000\000\177\215I`P\177\000\000\000\275\177rP\177\000\000p\234\305\0
00\000\000\000\000@\275\177rP\177\000\000 \205\315\000\000\000\000\000\313\343I\000\000\000\000\000\020", '\00
0' <repeats 23 times>...
        bdn = {bv_len = 40, bv_val = 0x7f50600013ac "uid=aapriest,ou=user,dc=csupomona,dc=edu"}
        dn = {bv_len = 40, bv_val = 0x7f5060001c48 "\360!"}
        ndn = {bv_len = 40, bv_val = 0x7f5060001cd8 "\340\034"}
        bv = {bv_len = 0, bv_val = 0x0}
        bv2 = {bv_len = 0, bv_val = 0x0}
        bvals = 0x7f506049fb80
        rdn = {bv_len = 0, bv_val = 0x0}
        sup = {bv_len = 0, bv_val = 0x0}
        prdn = {bv_len = 0, bv_val = 0x0}
        nrdn = {bv_len = 0, bv_val = 0x0}
        psup = {bv_len = 0, bv_val = 0x0}
        nsup = {bv_len = 0, bv_val = 0x0}
        rc = 0
        deleteOldRdn = 0
        freeReqDn = 1
        do_graduate = 1
#6  0x00000000004915d7 in do_syncrep2 (op=op@entry=0x7f50727fc600, si=si@entry=0xcd8520)
    at /var/lib/portage/tmp/portage/net-nds/openldap-2.4.44-r1/work/openldap-2.4.44/servers/slapd/syncrepl.c:1
013
        match = <optimized out>
        syncUUID = {{bv_len = 16, 
            bv_val = 0x7f506049fb47 "~\373\337l\214\335IȻ\346\230\350\r\n", <incomplete sequence \316>}, {
            bv_len = 0, bv_val = 0x0}}
        cookie = {bv_len = 15, bv_val = 0x7f506049fb59 "rid=003,sid=003"}
        rctrls = 0x7f506049abe0
        rctrlp = <optimized out>
        bdn = {bv_len = 44, bv_val = 0x7f506000135a "reqStart=20161225113103.000003Z,cn=accesslog"}
        si_tag = <optimized out>
        entry = <optimized out>
        punlock = -1
        syncstate = 1
        retdata = 0x0
        retoid = 0x78 <error: Cannot access memory at address 0x78>
        syncUUIDs = 0x0
        len = 15
        berbuf = {
          buffer = "\002\000\001", '\000' <repeats 29 times>, "@\373I`P\177\000\000h\373I`P\177\000\000h\373I`
P\177", '\000' <repeats 26 times>, "п\177rP\177\000\000\000\000\000\000R\177\000\000\001\000\000\000\000\000\0
00\000dZ\023qR\177\000\000Dh,\200\207\001\305\345\000\000\000\000\001\000\000\000\200\255J`P\177\000\000`\305\
177rP\177\000\000\257X\244qR\177\000\000\031p-rR\177\000\000\000\000\000\000\000\000\000\000\b\246\246rR\177\0
00\000\060", '\000' <repeats 15 times>, "\001\000\000\000\000\000\000\000d"..., ialign = 65538, 
          lalign = 65538, falign = 9.18382988e-41, dalign = 3.2380074297143616e-319, 
          palign = 0x10002 <error: Cannot access memory at address 0x10002>}
        ber = 0x7f50727fbf40
        msg = 0x7f5060102940
        syncCookie = {ctxcsn = 0x0, sids = 0x0, numcsns = 0, rid = 3, octet_str = {bv_len = 15, 
            bv_val = 0x7f5060498d70 "rid=003,sid=003"}, sid = 3, sc_next = {stqe_next = 0x0}}
        syncCookie_req = {ctxcsn = 0x7f50604a6c10, sids = 0x7f50604996c0, numcsns = 4, rid = 3, octet_str = {
            bv_len = 183, 
            bv_val = 0x7f50604984e0 "rid=003,sid=000,csn=20161225102351.582901Z#000000#000#000000;201612130230
51.387118Z#000000#001#000000;20160721062752.989665Z#000000#002#000000;20160721062824.859874Z#000000#003#000000
"}, sid = 0, sc_next = {stqe_next = 0x0}}
        rc = 0
        err = 0
        modlist = 0x0
        m = 11
        tout_p = 0x7f50727fbc00
        tout = {tv_sec = 0, tv_usec = 0}
        refreshDeletes = 0
        empty = "empty"
#7  0x0000000000495793 in do_syncrepl (ctx=ctx@entry=0x7f50727fcb90, arg=arg@entry=0xcd8a00)
    at /var/lib/portage/tmp/portage/net-nds/openldap-2.4.44-r1/work/openldap-2.4.44/servers/slapd/syncrepl.c:1
564
        rtask = 0xcd8a00
        si = 0xcd8520
        conn = {c_struct_state = SLAP_C_UNINITIALIZED, c_conn_state = SLAP_C_INVALID, c_conn_idx = -1, 
          c_sd = 0, c_close_reason = 0x0, c_mutex = {__data = {__lock = 0, __count = 0, __owner = 0, 
              __nusers = 0, __kind = 0, __spins = 0, __elision = 0, __list = {__prev = 0x0, __next = 0x0}}, 
            __size = '\000' <repeats 39 times>, __align = 0}, c_sb = 0x0, c_starttime = 0, 
          c_activitytime = 0, c_connid = 18446744073709551615, c_peer_domain = {bv_len = 0, 
            bv_val = 0x503e42 ""}, c_peer_name = {bv_len = 0, bv_val = 0x503e42 ""}, 
          c_listener = 0x506e00 <dummy_list>, c_sasl_bind_mech = {bv_len = 0, bv_val = 0x0}, c_sasl_dn = {
            bv_len = 0, bv_val = 0x0}, c_sasl_authz_dn = {bv_len = 0, bv_val = 0x0}, c_authz_backend = 0x0, 
          c_authz_cookie = 0x0, c_authz = {sai_method = 0, sai_mech = {bv_len = 0, bv_val = 0x0}, sai_dn = {
              bv_len = 0, bv_val = 0x0}, sai_ndn = {bv_len = 0, bv_val = 0x0}, sai_ssf = 0, 
            sai_transport_ssf = 0, sai_tls_ssf = 0, sai_sasl_ssf = 0}, c_protocol = 0, c_ops = {
            stqh_first = 0x0, stqh_last = 0x0}, c_pending_ops = {stqh_first = 0x0, stqh_last = 0x0}, 
          c_write1_mutex = {__data = {__lock = 0, __count = 0, __owner = 0, __nusers = 0, __kind = 0, 
              __spins = 0, __elision = 0, __list = {__prev = 0x0, __next = 0x0}}, 
            __size = '\000' <repeats 39 times>, __align = 0}, c_write1_cv = {__data = {__lock = 0, 
              __futex = 0, __total_seq = 0, __wakeup_seq = 0, __woken_seq = 0, __mutex = 0x0, 
              __nwaiters = 0, __broadcast_seq = 0}, __size = '\000' <repeats 47 times>, __align = 0}, 
          c_write2_mutex = {__data = {__lock = 0, __count = 0, __owner = 0, __nusers = 0, __kind = 0, 
              __spins = 0, __elision = 0, __list = {__prev = 0x0, __next = 0x0}}, 
            __size = '\000' <repeats 39 times>, __align = 0}, c_write2_cv = {__data = {__lock = 0, 
              __futex = 0, __total_seq = 0, __wakeup_seq = 0, __woken_seq = 0, __mutex = 0x0, 
              __nwaiters = 0, __broadcast_seq = 0}, __size = '\000' <repeats 47 times>, __align = 0}, 
          c_currentber = 0x0, c_writers = 0, c_writing = 0 '\000', c_sasl_bind_in_progress = 0 '\000', 
          c_writewaiter = 0 '\000', c_is_udp = 0 '\000', c_is_tls = 0 '\000', c_needs_tls_accept = 0 '\000', 
          c_sasl_layers = 0 '\000', c_sasl_done = 0 '\000', c_sasl_authctx = 0x0, c_sasl_sockctx = 0x0, 
          c_sasl_extra = 0x0, c_sasl_bindop = 0x0, c_pagedresults_state = {ps_be = 0x0, ps_size = 0, 
            ps_count = 0, ps_cookie = 0, ps_cookieval = {bv_len = 0, bv_val = 0x0}}, c_n_ops_received = 0, 
          c_n_ops_executing = 0, c_n_ops_pending = 0, c_n_ops_completed = 0, c_n_get = 0, c_n_read = 0, 
          c_n_write = 0, c_extensions = 0x0, c_clientfunc = 0x0, c_clientarg = 0x0, 
          c_send_ldap_result = 0x442d90 <slap_send_ldap_result>, 
          c_send_search_entry = 0x4437d0 <slap_send_search_entry>, 
          c_send_search_reference = 0x444d10 <slap_send_search_reference>, 
          c_send_ldap_extended = 0x4434a0 <slap_send_ldap_extended>, 
          c_send_ldap_intermediate = 0x443640 <slap_send_ldap_intermediate>}
        opbuf = {ob_op = {o_hdr = 0x7f50727fc770, o_tag = 102, o_time = 1482665463, o_tincr = 13, 
            o_bd = 0x7f50727fb690, o_req_dn = {bv_len = 40, 
              bv_val = 0x7f506049f2c0 "uid=aapriest,ou=user,dc=csupomona,dc=edu"}, o_req_ndn = {bv_len = 40, 
              bv_val = 0x7f506049f300 "uid=aapriest,ou=user,dc=csupomona,dc=edu"}, o_request = {oq_add = {
                rs_modlist = 0x7f5060001960, rs_e = 0x1}, oq_bind = {rb_method = 1610619232, rb_cred = {
                  bv_len = 1, bv_val = 0x0}, rb_edn = {bv_len = 0, bv_val = 0x0}, rb_ssf = 0, rb_mech = {
                  bv_len = 0, bv_val = 0x0}}, oq_compare = {rs_ava = 0x7f5060001960}, oq_modify = {
                rs_mods = {rs_modlist = 0x7f5060001960, rs_no_opattrs = 1 '\001'}, rs_increment = 0}, 
              oq_modrdn = {rs_mods = {rs_modlist = 0x7f5060001960, rs_no_opattrs = 1 '\001'}, 
                rs_deleteoldrdn = 0, rs_newrdn = {bv_len = 0, bv_val = 0x0}, rs_nnewrdn = {bv_len = 0, 
                  bv_val = 0x0}, rs_newSup = 0x0, rs_nnewSup = 0x0}, oq_search = {rs_scope = 1610619232, 
                rs_deref = 32592, rs_slimit = 1, rs_tlimit = 0, rs_limit = 0x0, rs_attrsonly = 0, 
                rs_attrs = 0x0, rs_filter = 0x0, rs_filterstr = {bv_len = 0, bv_val = 0x0}}, oq_abandon = {
                rs_msgid = 1610619232}, oq_cancel = {rs_msgid = 1610619232}, oq_extended = {rs_reqoid = {
                  bv_len = 139983184730464, bv_val = 0x1 <error: Cannot access memory at address 0x1>}, 
                rs_flags = 0, rs_reqdata = 0x0}, oq_pwdexop = {rs_extended = {rs_reqoid = {
                    bv_len = 139983184730464, bv_val = 0x1 <error: Cannot access memory at address 0x1>}, 
                  rs_flags = 0, rs_reqdata = 0x0}, rs_old = {bv_len = 0, bv_val = 0x0}, rs_new = {
                  bv_len = 0, bv_val = 0x0}, rs_mods = 0x0, rs_modtail = 0x0}}, o_abandon = 0, o_cancel = 0, 
            o_groups = 0x0, o_do_not_cache = 0 '\000', o_is_auth_check = 0 '\000', 
            o_dont_replicate = 0 '\000', o_acl_priv = ACL_NONE, o_nocaching = 0 '\000', 
            o_delete_glue_parent = 0 '\000', o_no_schema_check = 1 '\001', o_no_subordinate_glue = 0 '\000', 
            o_ctrlflag = '\000' <repeats 14 times>, "\002", '\000' <repeats 16 times>, 
            o_controls = 0x7f50727fc8c0, o_authz = {sai_method = 0, sai_mech = {bv_len = 0, bv_val = 0x0}, 
              sai_dn = {bv_len = 31, bv_val = 0xcd02f0 "cn=ldaproot,dc=csupomona,dc=edu"}, sai_ndn = {
              sai_transport_ssf = 0, sai_tls_ssf = 0, sai_sasl_ssf = 0}, o_ber = 0x0, o_res_ber = 0x0, 
            o_callback = 0x7f5060004198, o_ctrls = 0x0, o_csn = {bv_len = 40, 
              bv_val = 0x7f5060102c10 "20161225113103.634923Z#000000#000#000000"}, o_private = 0x0, 
            o_extra = {slh_first = 0x7f50727fb430}, o_next = {stqe_next = 0x0}}, ob_hdr = {oh_opid = 0, 
            oh_connid = 3, oh_conn = 0x7f50727fc340, oh_msgid = 0, oh_protocol = 0, 
            oh_tid = 139983495091968, oh_threadctx = 0x7f50727fcb90, oh_tmpmemctx = 0x7f5060000e30, 
            oh_tmpmfuncs = 0x7787a0 <slap_sl_mfuncs>, oh_counters = 0x7ae000 <slap_counters>, 
            oh_log_prefix = "conn=-1 op=0", '\000' <repeats 243 times>, oh_extensions = 0x0}, ob_controls = {
            0x0 <repeats 17 times>, 0x7f50727fbd00, 0x0 <repeats 14 times>}}
        op = 0x7f50727fc600
        rc = 0
        dostop = 0
        s = 16
        i = <optimized out>
        defer = 1
        fail = 0
        freeinfo = 0
        be = 0xcd0ac0
#8  0x0000000000433037 in connection_read_thread (ctx=0x7f50727fcb90, argv=0x10)
    at /var/lib/portage/tmp/portage/net-nds/openldap-2.4.44-r1/work/openldap-2.4.44/servers/slapd/connection.c
:1296
        rc = <optimized out>
        cri = {op = 0x0, func = 0x4954b0 <do_syncrepl>, arg = 0xcd8a00, ctx = <optimized out>, 
          nullop = <optimized out>}
        s = <optimized out>
#9  0x00007f5272c83a32 in ldap_int_thread_pool_wrapper (xpool=0xc63a40)
    at /var/lib/portage/tmp/portage/net-nds/openldap-2.4.44-r1/work/openldap-2.4.44/libraries/libldap_r/tpool.
c:696
        pool = 0xc63a40
        task = 0x7f50a8000a20
        work_list = <optimized out>
        ctx = {ltu_id = 139983495091968, ltu_key = {{ltk_key = 0x430810 <conn_counter_init>, 
              ltk_data = 0x7f5060000d20, ltk_free = 0x4308f0 <conn_counter_destroy>}, {
              ltk_key = 0x486ac0 <slap_sl_mem_init>, ltk_data = 0x7f5060000e30, 
              ltk_free = 0x486990 <slap_sl_mem_destroy>}, {ltk_key = 0x445cd0 <slap_op_free>, 
              ltk_data = 0x7f50a0113e10, ltk_free = 0x445c30 <slap_op_q_destroy>}, {ltk_key = 0xf85de0, 
              ltk_data = 0x7f5060102fd0, ltk_free = 0x7f526dfda950 <mdb_reader_free>}, {
              ltk_key = 0x7f526dfd07d0 <search_stack>, ltk_data = 0x7f5070ffc010, 
              ltk_free = 0x7f526dfd08e0 <search_stack_free>}, {ltk_key = 0x7f526dfd0730 <scope_chunk_get>, 
              ltk_data = 0x7f5060104e60, ltk_free = 0x7f526dfd08b0 <scope_chunk_free>}, {ltk_key = 0xd7f560, 
              ltk_data = 0x7f50604ab8f0, ltk_free = 0x7f526dfda950 <mdb_reader_free>}, {ltk_key = 0x0, 
              ltk_data = 0x7f506c40fff0, ltk_free = 0x0}, {ltk_key = 0x0, ltk_data = 0x0, 
              ltk_free = 0x0} <repeats 24 times>}}
        kctx = <optimized out>
        keyslot = <optimized out>
        hash = <optimized out>
        __PRETTY_FUNCTION__ = "ldap_int_thread_pool_wrapper"
#10 0x00007f52722ce494 in start_thread () from /lib64/libpthread.so.0
No symbol table info available.
#11 0x00007f52719c6edd in clone () from /lib64/libc.so.6
No symbol table info available.