Re: (ITS#4179) slapd-meta seg faults if a time attribute is mal formed

[ando@sys-net.it]

On Tue, 2005-11-22 at 08:40 +0000, ali.pouya@dgi.finances.gouv.fr wrote:

> Now I use OpenLdap 2.3.12 (which includes the fix to the ITS 4107), but my 
> problem is not fixed yet.
> I remark that the seg fault happens randomly at two different points.
> I attach the back trace of each case.
> Best Regards
> Ali Pouya
> 
> Case 1 :
> (gdb) bt
> #0  0x0811cdde in ber_bvarray_free_x (a=0x7373616c, ctx=0x0) at 
> memory.c:757
> #1  0x0811ce30 in ber_bvarray_free (a=0x7373616c) at memory.c:771
> #2  0x08060263 in attr_free (a=0x8f55370) at attr.c:64
> #3  0x080bc18f in meta_back_search (op=0x8f54cf8, rs=0xb7698230) at 
> search.c:1075
> #4  0x0805bb82 in fe_op_search (op=0x8f54cf8, rs=0xb7698230) at 
> search.c:349
> #5  0x0805b489 in do_search (op=0x8f54cf8, rs=0xb7698230) at search.c:219
> #6  0x0805a321 in connection_operation (ctx=0xb76982b0, arg_v=0x8f54cf8) 
> at connection.c:1061
> #7  0x081018c9 in ldap_int_thread_pool_wrapper (xpool=0x8ed3b20) at 
> tpool.c:485
> #8  0x007c1341 in start_thread (arg=0xb7698bb0) at pthread_create.c:261
> #9  0x002a5fee in ?? () from /lib/tls/libc.so.6

OK, I'll look at it.

> 
> --------------------------------------------------------------
> 
> Case 2)
> 
> (gdb) bt
> #0  0x080fdc6f in avl_insert (root=0x85ff2f8, data=0x866a068, 
> fcmp=0x80e6e9c <meta_dncache_cmp>,
>     fdup=0x80e6ee0 <meta_dncache_dup>) at avl.c:121
> #1  0x080e70be in meta_dncache_update_entry (cache=0x85ff2e0, 
> ndn=0xb7b98dcc, target=0)
>     at dncache.c:190
> #2  0x080e1bb9 in meta_back_single_bind (op=0xb7b98db0, rs=0xb7b9a230, 
> mc=0x8669d48, candidate=0)
>     at bind.c:442
> #3  0x080e2c41 in meta_back_dobind (op=0x86590e0, rs=0xb7b9a230, 
> mc=0x8669d48,
>     sendok=LDAP_BACK_SENDERR) at bind.c:692
> #4  0x080ba910 in meta_back_search (op=0x86590e0, rs=0xb7b9a230) at 
> search.c:262
> #5  0x0805bb82 in fe_op_search (op=0x86590e0, rs=0xb7b9a230) at 
> search.c:349
> #6  0x0805b489 in do_search (op=0x86590e0, rs=0xb7b9a230) at search.c:219
> #7  0x0805a321 in connection_operation (ctx=0xb7b9a2b0, arg_v=0x86590e0) 
> at connection.c:1061
> #8  0x081018c9 in ldap_int_thread_pool_wrapper (xpool=0x85e8b20) at 
> tpool.c:485
> #9  0x00f49341 in start_thread (arg=0xb7b9abb0) at pthread_create.c:261
> #10 0x00adffee in ?? () from /lib/tls/libc.so.6
> (gdb)
> --=_alternative 00313D1FC12570C1_=
> Content-Type: text/html; charset="us-ascii"

I note that you're using the DN cache feature; I'm afraid that has been
tested very little since back-meta was reworked between 2.2 and 2.3; I'm
considering the opportunity to deprecate (and disable) it.  Anyway, I'll
look at it as well, but I'd consider it a separate issue.  I suggest you
file a separate ITS.

p.




Ing. Pierangelo Masarati
Responsabile Open Solution

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