Re: (ITS#6892) Segfault in Syncprov overlay

[ghola@rebelbase.com]

> A patch to avoid this particular crash is now in git master. However, it's still not clear to me why it occurred. Can you get this info from gdb:
>        frame 1
>        print *ss

Thanks Howard, here is the info you requested:

(gdb) bt
#0  test_filter (op=0x40fff7f0, e=0x2aab116ab068, f=0x0) at filterentry.c:69
#1  0x00000000004db315 in syncprov_matchops (op=0x410001b0,
opc=0xb096e0, saveit=1) at syncprov.c:1314
#2  0x00000000004db6b5 in syncprov_op_mod (op=0x410001b0, rs=<value
optimized out>) at syncprov.c:2124
#3  0x000000000047e62a in overlay_op_walk (op=0x410001b0,
rs=0x40ffffc0, which=op_modify, oi=0x8d7ab0,
    on=0x8dc4f0) at backover.c:659
#4  0x000000000047ec07 in over_op_func (op=0x410001b0, rs=0x40ffffc0,
which=op_modify) at backover.c:721
#5  0x000000000047404d in syncrepl_updateCookie (si=0x8d74d0,
op=0x410001b0, syncCookie=0x41000b20)
    at syncrepl.c:3292
#6  0x0000000000478462 in do_syncrep2 (ctx=<value optimized out>,
arg=<value optimized out>)
    at syncrepl.c:1097
#7  do_syncrepl (ctx=<value optimized out>, arg=<value optimized out>)
at syncrepl.c:1455
#8  0x00000000004ec5ec in ldap_int_thread_pool_wrapper
(xpool=0x84daf0) at tpool.c:685
#9  0x000000301b20673d in start_thread (arg=<value optimized out>) at
pthread_create.c:301
#10 0x000000301aad44bd in clone () from /lib64/libc.so.6
(gdb) frame 1
#1  0x00000000004db315 in syncprov_matchops (op=0x410001b0,
opc=0xb096e0, saveit=1) at syncprov.c:1314
1314				rc = test_filter( &op2, e, op2.ors_filter );
(gdb) print *ss
$1 = {s_next = 0x2aab502177f0, s_base = {bv_len = 16, bv_val =
0x2aab730920e0 "dc=test12,dc=net"},
  s_eid = 1, s_op = 0x230ea90, s_rid = 1, s_sid = -1, s_filterstr =
{bv_len = 15,
    bv_val = 0x230f7d0 "(objectClass=*)"}, s_flags = 1, s_inuse = 1,
s_res = 0x2aababca90f0,
  s_restail = 0x2aabc320d920, s_mutex = {__data = {__lock = 0, __count
= 0, __owner = 0, __nusers = 0,
      __kind = 0, __spins = 0, __list = {__prev = 0x0, __next = 0x0}},
    __size = '\000' <repeats 39 times>, __align = 0}}