Re: (ITS#6878) ppcache segfault with tavl_delete

[tjgates@castlebranch.com]

Just crashed:

Program received signal SIGABRT, Aborted.
[Switching to Thread 0xb07f3b70 (LWP 24359)]
0xb77a7430 in __kernel_vsyscall ()
(gdb)
(gdb) bt
#0  0xb77a7430 in __kernel_vsyscall ()
#1  0xb727a651 in *__GI_raise (sig=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
#2  0xb727da82 in *__GI_abort () at abort.c:92
#3  0xb72b149d in __libc_message (do_abort=2, fmt=0xb7385f98 "*** glibc
detected *** %s: %s: 0x%s ***\n") at
../sysdeps/unix/sysv/linux/libc_fatal.c:189
#4  0xb72bb591 in malloc_printerr (action=<value optimized out>, str=0x6
<Address 0x6 out of bounds>, ptr=0xb8d93a40) at malloc.c:6266
#5  0xb72bcde8 in _int_free (av=<value optimized out>, p=<value
optimized out>) at malloc.c:4794
#6  0xb72bfecd in *__GI___libc_free (mem=0xb8d93a40) at malloc.c:3738
#7  0xb7750c20 in ber_memfree_x () from /usr/lib/liblber-2.4.so.2
#8  0xb7750caf in ber_bvarray_free_x () from /usr/lib/liblber-2.4.so.2
#9  0xb7750cf5 in ber_bvarray_free () from /usr/lib/liblber-2.4.so.2
#10 0xb7808f3d in attr_clean (a=0xb688ff64) at
/tmp/buildd/openldap-2.4.24/servers/slapd/attr.c:146
#11 0xb7808fdb in attrs_free (a=0xb688ff64) at
/tmp/buildd/openldap-2.4.24/servers/slapd/attr.c:196
#12 0xb6e2db0f in hdb_cache_modify (bdb=0xb8c104b0, e=0xb8c57b5c,
newAttrs=0xb688ed64, txn=0xb8d93ea8, lock=0xb07f11f0) at cache.c:1226
#13 0xb6e1901c in hdb_modify (op=0xb07f152c, rs=0xb07f1368) at modify.c:669
#14 0xb6e47258 in merge_entry (op=<value optimized out>, e=0xb8c58264,
dup=0, query_uuid=0xb8c9b130)
    at /tmp/buildd/openldap-2.4.24/servers/slapd/overlays/pcache.c:874
#15 0xb6e4effc in cache_entries (op=<value optimized out>,
query_uuid=<value optimized out>)
    at /tmp/buildd/openldap-2.4.24/servers/slapd/overlays/pcache.c:2291
#16 0xb6e4f3ed in pcache_op_cleanup (op=0xb8c829d8, rs=0xb07f2ffc) at
/tmp/buildd/openldap-2.4.24/servers/slapd/overlays/pcache.c:2396
#17 0xb78102ee in slap_cleanup_play (op=<value optimized out>, rs=<value
optimized out>) at /tmp/buildd/openldap-2.4.24/servers/slapd/result.c:539
#18 0xb7810fa9 in send_ldap_response (op=0xb8c829d8, rs=0xb07f2ffc) at
/tmp/buildd/openldap-2.4.24/servers/slapd/result.c:724
#19 0xb781209c in slap_send_ldap_result (op=0xb8c829d8, rs=0xb07f2ffc)
at /tmp/buildd/openldap-2.4.24/servers/slapd/result.c:851
#20 0xb6e6a987 in ldap_back_search (op=0xb8c829d8, rs=0xb07f2ffc) at
/tmp/buildd/openldap-2.4.24/servers/slapd/back-ldap/search.c:574
#21 0xb787802b in overlay_op_walk (op=0xb8c829d8, rs=0xb07f2ffc,
which=op_search, oi=0xb8c10fe0, on=0xb8c10260)
    at /tmp/buildd/openldap-2.4.24/servers/slapd/backover.c:669
#22 0xb7878d58 in over_op_func (op=<value optimized out>, rs=<value
optimized out>, which=op_search)
    at /tmp/buildd/openldap-2.4.24/servers/slapd/backover.c:721
#23 0xb7800b54 in fe_op_search (op=0xb8c829d8, rs=0xb07f2ffc) at
/tmp/buildd/openldap-2.4.24/servers/slapd/search.c:372
#24 0xb78014e7 in do_search (op=0xb8c829d8, rs=0xb07f2ffc) at
/tmp/buildd/openldap-2.4.24/servers/slapd/search.c:217
#25 0xb77fd994 in connection_operation (ctx=0xb07f31dc,
arg_v=0xb8c829d8) at
/tmp/buildd/openldap-2.4.24/servers/slapd/connection.c:1113
#26 0xb77fe492 in connection_read_thread (ctx=0xb07f31dc, argv=0x28) at
/tmp/buildd/openldap-2.4.24/servers/slapd/connection.c:1249
#27 0xb77634f4 in ?? () from /usr/lib/libldap_r-2.4.so.2
#28 0xb73af96e in start_thread (arg=0xb07f3b70) at pthread_create.c:300
#29 0xb731da4e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
(gdb)


she gdb shell is still open, let me know if I can provide any further
information.

On 03/24/2011 01:34 PM, Quanah Gibson-Mount wrote:
> --On Thursday, March 24, 2011 4:28 PM +0000 tjgates@castlebranch.com
> wrote:
>
>> Full_Name: Tyler Gates
>> Version: 2.4.21
>> OS: Ubuntu 10.04.2 LTS/CentOS 5.4
>> URL: ftp://ftp.openldap.org/incoming/
>> Submission from: (NULL) (24.106.216.17)
>>
>>
>> I have a caching proxy server (2.4.21) in front of two multi-masters.
>> After about 1 to 3 days it will segfault only when caching is enabled.
>> Log files are normally pretty useless but are normally in the operation
>> of removing stale queries:
>
> Bug reports with 2.4.21 are not being pursued.  Please use a current
> release (2.4.24) and verify whether or not the issue still exists there.
>
> --Quanah
>
>
> -- 
>
> Quanah Gibson-Mount
> Sr. Member of Technical Staff
> Zimbra, Inc
> A Division of VMware, Inc.
> --------------------
> Zimbra ::  the leader in open source messaging and collaboration

-- 

Tyler Gates
Systems Administrator
Castle Branch Inc.
910-815-3880 ext 7230
tjgates@castlebranch.com

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