Re: (ITS#4271) slapo-unique crashs slapd: schema_check.c:87

[ando@sys-net.it]

On Tue, 2005-12-20 at 20:52 +0000, michael@stroeder.com wrote:
> --------------------------------------------------------------------------------
> (gdb) bt full
> #0  0xffffe410 in __kernel_vsyscall ()
> No symbol table info available.
> #1  0xb7bce541 in raise () from /lib/tls/libc.so.6
> No symbol table info available.
> #2  0xb7bcfdbb in abort () from /lib/tls/libc.so.6
> No symbol table info available.
> #3  0xb7bc7925 in __assert_fail () from /lib/tls/libc.so.6
> No symbol table info available.
> #4  0x080a3fb0 in entry_schema_check ()
> No symbol table info available.
> #5  0xb79968ae in bdb_add (op=0xb261f868, rs=0xb261f938) at add.c:59
>         bdb = (struct bdb_info *) 0x81c4c48
>         pdn = <value optimized out>
>         p = <value optimized out>
>         ei = <value optimized out>
>         textbuf =
> "????8?,\000\000\000\210\025?000\000\000\000,\000\000\000A????\00021?8?\020\000\000\000\210\025??\b????2???$\b??\b\020\000\000\000?8?\000\000\000\000\000\000\000\000??????$???224?A???8?\030??\0329\021\bA??v??\002\000\000\000?????8??037??8?\030\000\000\000?8?\000\000\000\000\020\000\000\000\020\000\000\000?8?\000\000\000\000\003\000\000\000x????003\000\000\000?8?"...
>         children = (AttributeDescription *) 0x8179048
>         entry = (AttributeDescription *) 0x8178eb8
>         ltid = (DB_TXN *) 0x0
>         lt2 = <value optimized out>
>         opinfo = {boi_bdb = 0x0, boi_txn = 0x0, boi_err = 0, boi_locker
> = 0, boi_acl_cache = 0,
>   boi_locks = 0x0}
>         locker = <value optimized out>
>         lock = {off = 20, ndx = 0, gen = 2992764936, mode = 134778794}
>         num_retries = <value optimized out>
>         postread_ctrl = <value optimized out>
>         ctrls = {0x0, 0x14, 0xb261f7c8, 0xb7edcdcd, 0x14, 0x8}
>         num_ctrls = <value optimized out>
> #6  0x080d61eb in overlay_init ()
> No symbol table info available.
> #7  0x080ca75b in overlay_is_over ()
> No symbol table info available.
> #8  0x0807e317 in slap_attr_flags ()
> No symbol table info available.
> #9  0x0807f276 in slap_send_ldap_result ()
> No symbol table info available.
> #10 0xb790840f in unique_modify (op=0x823ed18, rs=0xb2621234) at
> unique.c:484
>         on = (slap_overinst *) 0x81c8250
>         ud = (unique_data *) 0x81c1758
>         nop = {o_hdr = 0x823ede8, o_tag = 102, o_time = 1135111245,
> o_tincr = 7, o_bd = 0xb261fe1c,
>   o_req_dn = {bv_len = 52,
>     bv_val = 0xb0d1e22c "cn=Michael Str

Your stack looks heavily corrupted, since there is no way
slap_attr_flags() can call overlay_is_over(); moreover, it shouldn't be
possible to have it called directly by slap_send_ldap_result() from
inside unique_modify().  I fear the corruption started way before,
because you shouldn't get to the point where a NULL modlist gets to
calling the unique overlay modify function.  I'd suggest you step back
to a fresh build, without optimization, full debugging symbols and no
dynamic modules.

p.




Ing. Pierangelo Masarati
Responsabile Open Solution
OpenLDAP Core Team

SysNet s.n.c.
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