#23122 [Fbk->Opn]: ImageTTFText causes segmentation fault while under Apache

From: Date: Thu, 10 Apr 2003 03:00:50 +0000
Subject: #23122 [Fbk->Opn]: ImageTTFText causes segmentation fault while under Apache
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-37509@lists.php.net to get a copy of this message 
 ID:               23122
 User updated by:  1413 at blargh dot com
 Reported By:      1413 at blargh dot com
-Status:           Feedback
+Status:           Open
 Bug Type:         GD related
 Operating System: Debian Linux
 PHP Version:      4.3.2RC1
 New Comment:

No - I converted the script to:

<?
/* Vertial Label maker */

$in = $_SERVER['argv'][1];

$im = ImageCreate(14,150);
$cBlack = ImageColorAllocate($im, 0, 0, 0);
$cWhite = ImageColorAllocate($im, 255, 255, 255);
$cBlue = ImageColorAllocate($im, 100, 100, 255);

ImageTTFText($im, 10, 90, 11, 150, $cWhite,
"/var/www/prime/common/arialbd.ttf", $in);

Header("Content-type: image/png");

ImagePng($im);

ImageDestroy($im);

?>

and tried it hundreds of times without getting a segfault.  When going
through Apache I get segfaults.


Previous Comments:
------------------------------------------------------------------------

[2003-04-09 21:16:14] iliaa@php.net

Can you replicate the problem using CLI sapi?

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

[2003-04-08 19:52:58] 1413 at blargh dot com

Downloaded, compiled with same options as before, and 
installed.  Still crashes.  New GDB output follows. 
 
Starting program: /usr/sbin/apache -X 
(no debugging symbols found)...(no debugging symbols 
found)...(no debugging symbols found)...(no debugging 
symbols found)...(no debugging symbols found)...(no 
debugging symbols found)...(no debugging symbols found)... 
(no debugging symbols found)...(no debugging symbols 
found)...(no debugging symbols found)...(no debugging 
symbols found)...(no debugging symbols found)...(no 
debugging symbols found)...(no debugging symbols found)... 
(no debugging symbols found)...(no debugging symbols 
found)...(no debugging symbols found)...(no debugging 
symbols found)...(no debugging symbols found)...(no 
debugging symbols found)...(no debugging symbols found)... 
(no debugging symbols found)...(no debugging symbols 
found)...(no debugging symbols found)...(no debugging 
symbols found)...(no debugging symbols found)...(no 
debugging symbols found)...(no debugging symbols found)... 
(no debugging symbols found)...(no debugging symbols 
found)...(no debugging symbols found)...(no debugging 
symbols found)...(no debugging symbols found)...(no 
debugging symbols found)...(no debugging symbols found)... 
(no debugging symbols found)...(no debugging symbols 
found)...(no debugging symbols found)...(no debugging 
symbols found)...(no debugging symbols found)...(no 
debugging symbols found)...(no debugging symbols found)... 
Program received signal SIGSEGV, Segmentation fault. 
0x402b9c13 in fontTest (element=0x31, key=0xbfffd12c) at 
/root/php4-STABLE-200304082330/ext/gd/libgd/gdft.c:349 
349       return (strcmp (a->fontlist, b->fontlist) == 0); 
(gdb) bt 
#0  0x402b9c13 in fontTest (element=0x31, key=0xbfffd12c) 
at /root/php4-STABLE-200304082330/ext/gd/libgd/gdft.c:349 
#1  0x402bbb7e in gdCacheGet (head=0x8129210, 
keydata=0xbfffd12c) at 
/root/php4-STABLE-200304082330/ext/gd/libgd/gdcache.c:104 
#2  0x402bac80 in gdImageStringFTEx (im=0x8118d34, 
brect=0xbfffd2a0, fg=1, fontlist=0x811fd3c 
"/var/www/prime/common/arialbd.ttf", ptsize=10, 
angle=1.5707963267948966, x=11, y=150, string=0x810680c 
"Bonus 16-Mar-2003", 
    strex=0x0) at 
/root/php4-STABLE-200304082330/ext/gd/libgd/gdft.c:825 
#3  0x402baad4 in gdImageStringFT (im=0x8118d34, 
brect=0xbfffd2a0, fg=1, fontlist=0x811fd3c 
"/var/www/prime/common/arialbd.ttf", ptsize=10, 
angle=1.5707963267948966, x=11, y=150, string=0x810680c 
"Bonus 16-Mar-2003") 
    at 
/root/php4-STABLE-200304082330/ext/gd/libgd/gdft.c:767 
#4  0x402a8f7a in php_imagettftext_common (ht=8, 
return_value=0x811fd94, this_ptr=0x0, return_value_used=0, 
mode=0, extended=0) at 
/root/php4-STABLE-200304082330/ext/gd/gd.c:3050 
#5  0x402a8443 in zif_imagettftext (ht=8, 
return_value=0x811fd94, this_ptr=0x0, return_value_used=0) 
at /root/php4-STABLE-200304082330/ext/gd/gd.c:2939 
#6  0x403d2a52 in execute (op_array=0x810cb34) at 
/root/php4-STABLE-200304082330/Zend/zend_execute.c:1606 
#7  0x403bf8e4 in zend_execute_scripts (type=8, retval=0x0, 
file_count=3) at 
/root/php4-STABLE-200304082330/Zend/zend.c:864 
#8  0x4038465e in php_execute_script 
(primary_file=0xbffff9d8) at 
/root/php4-STABLE-200304082330/main/main.c:1653 
#9  0x403d7fd0 in apache_php_module_main (r=0x8101b2c, 
display_source_mode=0) at 
/root/php4-STABLE-200304082330/sapi/apache/sapi_apache.c:55 
#10 0x403d9080 in send_php (r=0x8101b2c, 
display_source_mode=0, filename=0x8103704 
"/var/www/prime/common/vl.php") at 
/root/php4-STABLE-200304082330/sapi/apache/mod_php4.c:617 
#11 0x403d90ff in send_parsed_php (r=0x8101b2c) at 
/root/php4-STABLE-200304082330/sapi/apache/mod_php4.c:632 
#12 0x08053ab4 in ap_invoke_handler () 
#13 0x0806342c in ap_some_auth_required () 
#14 0x08063488 in ap_process_request () 
#15 0x0805cc6b in ap_child_terminate () 
#16 0x0805cdfc in ap_child_terminate () 
#17 0x0805cf19 in ap_child_terminate () 
#18 0x0805d3f5 in ap_child_terminate () 
#19 0x0805dafd in main () 
#20 0x400f314f in __libc_start_main () from /lib/libc.so.6 
(gdb) print a 
$1 = (font_t *) 0x31 
(gdb) print b 
$2 = (fontkey_t *) 0xbfffd12c

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

[2003-04-08 19:32:16] iliaa@php.net

Please try using this CVS snapshot:

  http://snaps.php.net/php4-STABLE-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php4-win32-STABLE-latest.zip



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

[2003-04-08 19:14:57] 1413 at blargh dot com

I have tried this with 4.3.2RC1 and the latest development 
snapshot.   
 
Configure options: 
./configure  --with-apxs --with-zlib --with-bz2 --with-gd 
--enable-gd-native-ttf --with-mysql=/usr --enable-sockets 
--prefix=/usr --with-ttf --enable-ftp --with-jpeg-dir=/usr 
--with-freetype-dir=/usr --enable-debug 
 
The following is the script that triggers the problem: 
 
<? 
 
/* Vertial Label maker */ 
$im = ImageCreate(14,150); 
$cBlack = ImageColorAllocate($im, 0, 0, 0); 
$cWhite = ImageColorAllocate($im, 255, 255, 255); 
$cBlue = ImageColorAllocate($im, 100, 100, 255); 
 
if($lk == 1) 
{ 
  ImageTTFText($im, 10, 90, 11, 150, $cBlue, 
"/var/www/prime/common/arialbd.ttf", $in); 
} else { 
  ImageTTFText($im, 10, 90, 11, 150, $cWhite, 
"/var/www/prime/common/arialbd.ttf", $in); 
} 
 
Header("Content-type: image/png"); 
 
ImagePng($im); 
 
ImageDestroy($im); 
 
?> 
 
This script is called a number of times in a page, with 
(for example): vl.php?lk=0&in=Bonus+30-Mar-2003 
 
Running gdb on apache -X, the crash occurs: 
 
Program received signal SIGSEGV, Segmentation fault. 
0x402b9c13 in fontTest (element=0x31, key=0xbfffd12c) at 
/root/php4-STABLE-200304082130/ext/gd/libgd/gdft.c:349 
349       return (strcmp (a->fontlist, b->fontlist) == 0); 
(gdb) bt 
#0  0x402b9c13 in fontTest (element=0x31, key=0xbfffd12c) 
at /root/php4-STABLE-200304082130/ext/gd/libgd/gdft.c:349 
#1  0x402bbb7e in gdCacheGet (head=0x8129210, 
keydata=0xbfffd12c) at 
/root/php4-STABLE-200304082130/ext/gd/libgd/gdcache.c:104 
#2  0x402bac80 in gdImageStringFTEx (im=0x8118d34, 
brect=0xbfffd2a0, fg=1, fontlist=0x811fd3c 
"/var/www/prime/common/arialbd.ttf", ptsize=10, 
angle=1.5707963267948966, x=11, y=150, string=0x810680c 
"Bonus 30-Mar-2003", 
    strex=0x0) at 
/root/php4-STABLE-200304082130/ext/gd/libgd/gdft.c:825 
#3  0x402baad4 in gdImageStringFT (im=0x8118d34, 
brect=0xbfffd2a0, fg=1, fontlist=0x811fd3c 
"/var/www/prime/common/arialbd.ttf", ptsize=10, 
angle=1.5707963267948966, x=11, y=150, string=0x810680c 
"Bonus 30-Mar-2003") 
    at 
/root/php4-STABLE-200304082130/ext/gd/libgd/gdft.c:767 
#4  0x402a8f7a in php_imagettftext_common (ht=8, 
return_value=0x811fd94, this_ptr=0x0, return_value_used=0, 
mode=0, extended=0) at 
/root/php4-STABLE-200304082130/ext/gd/gd.c:3050 
#5  0x402a8443 in zif_imagettftext (ht=8, 
return_value=0x811fd94, this_ptr=0x0, return_value_used=0) 
at /root/php4-STABLE-200304082130/ext/gd/gd.c:2939 
#6  0x403d2a52 in execute (op_array=0x810cb34) at 
/root/php4-STABLE-200304082130/Zend/zend_execute.c:1606 
#7  0x403bf8e4 in zend_execute_scripts (type=8, retval=0x0, 
file_count=3) at 
/root/php4-STABLE-200304082130/Zend/zend.c:864 
#8  0x4038465e in php_execute_script 
(primary_file=0xbffff9d8) at 
/root/php4-STABLE-200304082130/main/main.c:1653 
#9  0x403d7fd0 in apache_php_module_main (r=0x8101b2c, 
display_source_mode=0) at 
/root/php4-STABLE-200304082130/sapi/apache/sapi_apache.c:55 
#10 0x403d9080 in send_php (r=0x8101b2c, 
display_source_mode=0, filename=0x8103704 
"/var/www/prime/common/vl.php") at 
/root/php4-STABLE-200304082130/sapi/apache/mod_php4.c:617 
#11 0x403d90ff in send_parsed_php (r=0x8101b2c) at 
/root/php4-STABLE-200304082130/sapi/apache/mod_php4.c:632 
#12 0x08053ab4 in ap_invoke_handler () 
#13 0x0806342c in ap_some_auth_required () 
#14 0x08063488 in ap_process_request () 
#15 0x0805cc6b in ap_child_terminate () 
#16 0x0805cdfc in ap_child_terminate () 
#17 0x0805cf19 in ap_child_terminate () 
#18 0x0805d3f5 in ap_child_terminate () 
#19 0x0805dafd in main () 
#20 0x400f314f in __libc_start_main () from /lib/libc.so.6 
(gdb) print a 
$1 = (font_t *) 0x31 
(gdb) print b 
$2 = (fontkey_t *) 0xbfffd12c 
 

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


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