#25242 [NoF->Csd]: PHP segfaults on certain scripts. If compiled in debug mode - doesn't segfault.
| From: | shimi@php.net | Date: | Wed, 14 Jul 2004 19:36:42 +0000 |
| Subject: | #25242 [NoF->Csd]: PHP segfaults on certain scripts. If compiled in debug mode - doesn't segfault. | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-62288@lists.php.net to get a copy of this message | ||
ID: 25242
User updated by: shimi@php.net
-Summary: Compile goes fine, but 'make install' dies during PEAR
installation
Reported By: shimi@php.net
-Status: No Feedback
+Status: Closed
Bug Type: Reproducible crash
Operating System: Linux 2.4.18-27.7.x (RH7.2)
-PHP Version: 4.3.3
+PHP Version: 5.0.0
New Comment:
Just installed PHP5 (after having PHP4 in debug mode) - and the
phenomena is back!
As per the advise since when I opened this bug - I removed all the TSRM
stuff, and currently this is my configure line:
'./configure' '--enable-memory-limit' '--with-gzip'
'--enable-yp'
'--with-sablot-js' '--enable-wddx' '--enable-snmp'
'--enable-shmop'
'--with-mysql' '--with-ldap' '--with-imap-ssl'
'--with-iconv'
'--with-gd' '--enable-gd-native-ttf' '--enable-ftp'
'--with-dba'
'--enable-calendar' '--enable-bcmath' '--with-bz2'
'--with-zlib'
'--with-apxs2=/usr/local/apache2/bin/apxs' '--with-imap'
'--with-gettext' '--with-kerberos' '--enable-exif'
'--with-ttf'
'--enable-gd-native-ttf'
'--with-freetype-dir=/usr/include/freetype2/freetype'
'--with-config-file-path=/usr/local/apache2/conf'
Now the installer doesn't segfault in the middle (it did before, when I
had openssl in the option, so I removed it), and now only the script
mentioned in the bug is segfaulting. Well, not exactly. The script
mentioned in the bug actually works fine. The same script, that has
exactly the same code, but works with more data (displays more results)
- segfaults the php cli.
Again, compiling PHP in debug mode - and the problem vanishes. gdb
trace shows again the same error: Zend/zend_language_scanner.c: No such
file or directory.
Just thought you people might want to know.
Previous Comments:
------------------------------------------------------------------------
[2003-09-02 18:16:27] sniper@php.net
No feedback was provided. The bug is being suspended because
we assume that you are no longer experiencing the problem.
If this is not the case and you are able to provide the
information that was requested earlier, please do so and
change the status of the bug back to "Open". Thank you.
------------------------------------------------------------------------
[2003-08-26 23:23:20] sniper@php.net
Start by reducing your configure options to bare minimum:
./configure --disable-all --disable-cgi
Then continue by adding the ones you used one by one to see which one
causes it. (leave --disable-all there)
Also, you should not try outsmarting the configure..leave those 'tsrm'
options out.
------------------------------------------------------------------------
[2003-08-26 20:39:52] shimi@php.net
I am really puzzled now. Alindeman told me, quoting:
[02:33] <alindeman> shimi: you must have --enable-debug enabled for
anything useful tho
So I did make clean distclean, and ran configure again, this time with
--enable-debug. When he said "useful", it didn't cross my mind that he
means "the segfault would disappear" :) After recompiling - PEAR
installation went fine, and my script that segfaulted before, doesn't
do that anymore.
Making make clean distclean again and compiling without --enable-debug,
and the segfault returns.
I don't care staying in this situation, unless this heavies the load on
my CPU which is already quite busy... should I strip the cli executable
or something? What about the apache module?
------------------------------------------------------------------------
[2003-08-26 18:36:13] shimi@php.net
Ok I have a script that searches the web for news, gathers them into a
DB, and then creates a nice HTML summary for all of them.
I have now copied sapi/cli/php to the backend creation directory, and
ran this:
bash-2.05$ ./php ZZZupdate-60-news.php
Segmentation fault (core dumped)
<?php
require("Inc/hebdate.php");
require("Inc/config.php");
require("Inc/header.php");
require("Inc/categories.php");
$searchform = fopen("search.html", "r");
while(!feof($searchform)) { $output .= fgets($searchform, 10000); }
fclose($searchform);
$panel = $news_label . " | " .
cCreateLink($economy_label,$economy_file) . " | " .
cCreateLink($technology_label,$technology_file) . " | " .
cCreateLink($sport_label,$sport_file) . " | " .
cCreateLink($entertainment_label,$entertainment_file);
$output = ereg_replace("___URL___",$news_file,$output);
$output .= "<CENTER><H2>60
הכותרות
האחרונות
בחדשות</H2></CENTER><BR>\n";
$output .= "<TABLE BORDER=0 CELLSPACING=0 CELLPADDING=0
BGCOLOR=\"#9CB8D0\" ALIGN=\"Center\"
WIDTH=\"97%\"><TR><TD><TABLE
BORDER=0 CELLSPACING=1 CELLPADDING=3 WIDTH=\"100%\">";
$output .= "<TR BGCOLOR=\"#F7F7F7\"><TD COLSPAN=5><FONT
FACE=\"Arial\"
SIZE=\"-1\">הצג 60
כותרות
אחרונות ב:
".$panel."</FONT></TD></TR>";
require("Inc/connectdb.php");
$query="SELECT * FROM news WHERE genre='news' ORDER BY unixtime DESC
LIMIT 60";
require("Inc/maketable.php");
$output .= "<CENTER><FONT FACE=\"Arial\" SIZE=\"-1\">[ <A
HREF=\"today-news.html\">הצג
כותרות מ24
השעות
האחרונות</A>
]</FONT></CENTER><BR>";
require("Inc/footer.php");
$fp=fopen($news_offset.$news_file,"w");
fputs($fp, $output);
fclose($fp);
?>
I know, this include various files. In those files basically there are
normal for/while loops and string replaces, just like you saw here, no
extra code functionality (besides the DB connection that happens in
connectdb.php).
Anyways...
bash-2.05$ gdb ./php
GNU gdb Red Hat Linux (5.2-2)
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and
you are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for
details.
This GDB was configured as "i386-redhat-linux"...
(gdb) run ZZZupdate-60-news.php
Starting program: ./php ZZZupdate-60-news.php
Program received signal SIGSEGV, Segmentation fault.
0x0818e743 in lex_scan (zendlval=0xbfff9c24) at
Zend/zend_language_scanner.c:3699
3699 Zend/zend_language_scanner.c: No such file or directory.
in Zend/zend_language_scanner.c
(gdb) bt
#0 0x0818e743 in lex_scan (zendlval=0xbfff9c24) at
Zend/zend_language_scanner.c:3699
#1 0x08198fbc in zendlex (zendlval=0xbfff9c20) at
/root/php-4.3.3/Zend/zend_compile.c:2464
#2 0x0818af8f in zendparse () at Zend/zend_language_parser.c:1880
#3 0x0818dc76 in compile_file (file_handle=0xbfffab20, type=8) at
Zend/zend_language_scanner.c:3110
#4 0x0818ddc1 in compile_filename (type=8, filename=0x834f5a8) at
Zend/zend_language_scanner.c:3164
#5 0x081bacd9 in execute (op_array=0x835055c) at
/root/php-4.3.3/Zend/zend_execute.c:2150
#6 0x081bade5 in execute (op_array=0x834b57c) at
/root/php-4.3.3/Zend/zend_execute.c:2181
#7 0x081a2d48 in zend_execute_scripts (type=8, retval=0x0,
file_count=3) at /root/php-4.3.3/Zend/zend.c:885
#8 0x0817ae98 in php_execute_script (primary_file=0xbfffe8a0) at
/root/php-4.3.3/main/main.c:1723
#9 0x081be2a0 in main (argc=2, argv=0xbfffe944) at
/root/php-4.3.3/sapi/cli/php_cli.c:818
#10 0x402b7657 in __libc_start_main (main=0x81bd968 <main>, argc=2,
ubp_av=0xbfffe944, init=0x8077114 <_init>,
fini=0x8212ae0 <_fini>, rtld_fini=0x4000dcd4 <_dl_fini>,
stack_end=0xbfffe93c) at ../sysdeps/generic/libc-start.c:129
(gdb)
hope this helps more...
------------------------------------------------------------------------
[2003-08-26 13:49:23] iliaa@php.net
Could you provide a small sample script (besides PEAR make install)
that could be used to replicate the crash and generate a backtrace of
the crash.
------------------------------------------------------------------------
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