Re: (ITS#5733) core dump in re24's slapd-ldap(5)

[quanah@zimbra.com]

--On Thursday, October 09, 2008 8:42 PM +0000 ando@sys-net.it wrote:

> Full_Name: Pierangelo Masarati
> Version: re24
> OS: Linux x86
> URL: ftp://ftp.openldap.org/incoming/
> Submission from: (NULL) (81.72.89.40)
> Submitted by: ando
>
>
> I had a strange core dump while testing re24 (test039).  I'm reporting it
> in order to be able to investigate it further later.  Backtrace follows:

I hit this today in testing RE24 as well:

Thread 1 (process 27053):
#0  0x000000395e030155 in raise () from /lib64/libc.so.6
#1  0x000000395e031bf0 in abort () from /lib64/libc.so.6
#2  0x000000395e0295d6 in __assert_fail () from /lib64/libc.so.6
#3  0x00002b45fe1d3f51 in ldap_back_conn_delete (li=0xba73080, 
lc=0x2aaab0003690) at ../../../../servers/slapd/back-ldap/bind.c:157
#4  0x00002b45fe1d4a34 in ldap_back_freeconn (li=0xba73080, 
lc=0x2aaab0003690, dolock=0) at 
../../../../servers/slapd/back-ldap/bind.c:467
#5  0x00002b45fe1d6492 in ldap_back_release_conn_lock (li=0xba73080, 
lcp=0x45b9c5e8, dolock=1) at ../../../../servers/slapd/back-ldap/bind.c:1144
#6  0x00002b45fe1d46b0 in ldap_back_bind (op=0xc168af0, rs=0x45b9cc40) at 
../../../../servers/slapd/back-ldap/bind.c:355
#7  0x00000000004c24da in overlay_op_walk (op=0xc168af0, rs=0x45b9cc40, 
which=op_bind, oi=0xba2cd90, on=0x0) at 
../../../servers/slapd/backover.c:669
#8  0x00000000004c26dd in over_op_func (op=0xc168af0, rs=0x45b9cc40, 
which=op_bind) at ../../../servers/slapd/backover.c:721
#9  0x00000000004c272b in over_op_bind (op=0xc168af0, rs=0x45b9cc40) at 
../../../servers/slapd/backover.c:731
#10 0x0000000000460681 in fe_op_bind (op=0xc168af0, rs=0x45b9cc40) at 
../../../servers/slapd/bind.c:383
#11 0x00000000004c24da in overlay_op_walk (op=0xc168af0, rs=0x45b9cc40, 
which=op_bind, oi=0xba6def0, on=0x0) at 
../../../servers/slapd/backover.c:669
#12 0x00000000004c26dd in over_op_func (op=0xc168af0, rs=0x45b9cc40, 
which=op_bind) at ../../../servers/slapd/backover.c:721
#13 0x00000000004c272b in over_op_bind (op=0xc168af0, rs=0x45b9cc40) at 
../../../servers/slapd/backover.c:731
#14 0x000000000045fdb0 in do_bind (op=0xc168af0, rs=0x45b9cc40) at 
../../../servers/slapd/bind.c:205
#15 0x0000000000438a70 in connection_operation (ctx=0x45b9cd90, 
arg_v=0xc168af0) at ../../../servers/slapd/connection.c:1097
#16 0x0000000000438f8b in connection_read_thread (ctx=0x45b9cd90, 
argv=0x17) at ../../../servers/slapd/connection.c:1223
#17 0x00002b45fad8b6b7 in ldap_int_thread_pool_wrapper (xpool=0xba14330) at 
../../../libraries/libldap_r/tpool.c:663
#18 0x00002b45fb5442f7 in start_thread () from /lib64/libpthread.so.0
#19 0x000000395e0d1e3d in clone () from /lib64/libc.so.6
(gdb) frame 6
#6  0x00002b45fe1d46b0 in ldap_back_bind (op=0xc168af0, rs=0x45b9cc40) at 
../../../../servers/slapd/back-ldap/bind.c:355
355                     ldap_back_release_conn( li, lc );
(gdb) p retrying
$1 = LDAP_BACK_RETRYING
(gdb) frame 3
#3  0x00002b45fe1d3f51 in ldap_back_conn_delete (li=0xba73080, 
lc=0x2aaab0003690) at ../../../../servers/slapd/back-ldap/bind.c:157
157                             assert( !LDAP_BACK_CONN_TAINTED( lc ) );
(gdb) print *lc
$2 = {lc_conn = 0x2b45fea45f50, lc_ld = 0x2aaab00126d0, lc_cred = {bv_len = 
0, bv_val = 0x0}, lc_bound_ndn = {bv_len = 46,
    bv_val = 0x2aaaac126130 "cn=james a jones 
4,ou=people,dc=example,dc=com"}, lc_local_ndn = {bv_len = 46, bv_val = 
0x2aaaac1192a0 "cn=james a jones 4,ou=people,dc=example,dc=com"},
  lc_lcflags = 289, lc_refcnt = 0, lc_flags = 4096, lc_create_time = 0, 
lc_time = 0, lc_q = {tqe_next = 0x0, tqe_prev = 0x0}}
(gdb) p /x lc->lc_lcflags
$3 = 0x121

--Quanah


--

Quanah Gibson-Mount
Principal Software Engineer
Zimbra, Inc
--------------------
Zimbra ::  the leader in open source messaging and collaboration