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Bug #11780 udm_find makes php crash
Submitted: 2001-06-28 10:05 UTC Modified: 2001-07-04 00:49 UTC
From: cedric at anes dot com Assigned:
Status: Closed Package: Unknown/Other Function
PHP Version: 4.0.6 OS: Linux
Private report: No CVE-ID: None
 [2001-06-28 10:05 UTC] cedric at anes dot com
To reproduce the problem :

<html><body>
Hello World<br>
<?php
        $udm_agent = udm_alloc_agent( "mysql://myuser:mypass@localhost/mnoGoSearch/","single");
        if ( $udm_agent == false )
                echo "Agent NOK<br>";
        else
                echo "Agent OK<br>";
        $res = udm_find( $udm_agent, "word" );
?>
</body></html>

Important notice: It seems to crash ONLY when the word
belongs the dictionary (dict table).
(This seems to prove that the udm_agent is well-defined)

Configuration :
./configure --with-mysql --with-apxs=/usr/local/apache/bin/apxs --enable-trans-sid --with-curl --with-mnogosearch=/usr/local/bin/mnogosearch --enable-debug

Apache 1.3.19

Backtrace:

#0  _dl_lookup_versioned_symbol (undef_name=0x804bf7a "unlink", ref=0xbffffd18, symbol_scope=0x0, 
    reference_name=0x40010187 "", version=0x40151048, reloc_type=7) at do-lookup.h:82
#1  0x40009cfa in fixup (l=0x40013368, reloc_offset=1668) at dl-runtime.c:75
#2  0x40009e70 in _dl_runtime_resolve () at dl-runtime.c:170
#3  0x80779b3 in main ()

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 [2001-06-29 01:32 UTC] cedric at anes dot com
BTW, if it can help, I'm using mnoGoSearch 3.1.16
and MySQL 3.23.35
 [2001-06-29 02:07 UTC] cedric at anes dot com
Just got a new backtrace with httpd -X:

Program received signal SIGSEGV, Segmentation fault.
__libc_free (mem=0x1) at malloc.c:2914
malloc.c:2914: No such file or directory.
(gdb) bt
#0  __libc_free (mem=0x1) at malloc.c:2914
#1  0x403a0bf1 in ?? () from /usr/local/apache-1.3.19/libexec/libphp4.so
#2  0x4039cb26 in ?? () from /usr/local/apache-1.3.19/libexec/libphp4.so
#3  0x40415bfe in ?? () from /usr/local/apache-1.3.19/libexec/libphp4.so
#4  0x40415d6f in ?? () from /usr/local/apache-1.3.19/libexec/libphp4.so
#5  0x4042aa41 in ?? () from /usr/local/apache-1.3.19/libexec/libphp4.so
#6  0x40393bdb in ?? () from /usr/local/apache-1.3.19/libexec/libphp4.so
#7  0x4037a2ae in ?? () from /usr/local/apache-1.3.19/libexec/libphp4.so
#8  0x40379137 in ?? () from /usr/local/apache-1.3.19/libexec/libphp4.so
#9  0x4037a088 in ?? () from /usr/local/apache-1.3.19/libexec/libphp4.so
#10 0x40395dd0 in ?? () from /usr/local/apache-1.3.19/libexec/libphp4.so
#11 0x40366dbc in ?? () from /usr/local/apache-1.3.19/libexec/libphp4.so
#12 0x40375bc7 in ?? () from /usr/local/apache-1.3.19/libexec/libphp4.so
#13 0x40386ce4 in ?? () from /usr/local/apache-1.3.19/libexec/libphp4.so
#14 0x403838bf in ?? () from /usr/local/apache-1.3.19/libexec/libphp4.so
#15 0x40384218 in ?? () from /usr/local/apache-1.3.19/libexec/libphp4.so
#16 0x40384248 in ?? () from /usr/local/apache-1.3.19/libexec/libphp4.so
#17 0x806ba5f in ap_invoke_handler ()
#18 0x807f375 in process_request_internal ()
#19 0x807f3d4 in ap_process_request ()
#20 0x8076871 in child_main ()
#21 0x80769fc in make_child ()
#22 0x8076b57 in startup_children ()
#23 0x8077154 in standalone_main ()
#24 0x80779b3 in main ()

 [2001-07-03 14:35 UTC] sniper@php.net
User feedback:
----------------

 Hi Sergey !

Thanks a lot for your input.
It was actually already compiled that way.
However, you gave me an idea..
I've specified the path of the mysql binaries
( --with-mysql=/usr/local/mysql ) [for mnoGoSearch compil]
and now it seems to work fine !

The funny thing is that when I use only  --with-mysql, all the command line
tools
like the indexer are working fine and updates the databases accordingly !

--------------------

I guess you used this on PHP configure too?
It's better to use the external MySQL libraries if there
are some other Apache DSO's or some library that also uses 
Mysql.

--Jani
 
 [2001-07-04 00:49 UTC] cedric at anes dot com
Actually I did'nt specify the MySQL librairies path
for php compilation since I don't have any other Apache DSO's that are accessing MySQL.

Here's my configure line:

../configure --with-mysql --with-apxs=/usr/local/apache/bin/apxs --enable-trans-sid --with-curl --with-mnogosearch=/usr/local/bin/mnogosearch --enable-debug


 
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