segfault when running header?

19 years ago by Chris Malton — view source — reply

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The header() function currently causes a segfault with CVS head sources.

Here's a backtrace.

#0 _zend_mm_free_int (heap=0xb302f0, p=0xb88b11b)
at /root/php6/Zend/zend_alloc.c:1522
#1 0x00000000006a5d4f in destroy_op_array (op_array=0x2ae269e4d410)
at /root/php6/Zend/zend_opcode.c:265
#2 0x00000000006e0085 in ZEND_INCLUDE_OR_EVAL_SPEC_CONST_HANDLER (
execute_data=0x7fff40c85d10) at /root/php6/Zend/zend_vm_execute.h:2039
#3 0x00000000006d7bbc in execute (op_array=0x2ae269e4ce30)
at /root/php6/Zend/zend_vm_execute.h:92
#4 0x00000000006b0663 in zend_execute_scripts (type=8, retval=0xb88b11b,
file_count=3) at /root/php6/Zend/zend.c:1630
#5 0x0000000000662883 in php_execute_script (primary_file=0x7fff40c883e0)
at /root/php6/main/main.c:1951
#6 0x000000000073d394 in main (argc=2, argv=0x7fff40c8a648)
at /root/php6/sapi/cgi/cgi_main.c:1660

I'll leave this up to a dev team person to sort. I am merely testing
out php6 before a migration.

Need any more info? Give me a buzz.

Chris

19 years ago by Antony Dovgal — view source — reply

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The header() function currently causes a segfault with CVS head sources.

I'll leave this up to a dev team person to sort. I am merely testing
out php6 before a migration.

Migration to PHP6?

Need any more info? Give me a buzz.

A reproduce case?

--
Wbr,
Antony Dovgal

19 years ago by Chris Malton — view source — reply

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Antony Dovgal wrote:

The header() function currently causes a segfault with CVS head
sources.

I'll leave this up to a dev team person to sort. I am merely testing
out php6 before a migration.

Migration to PHP6?

When it is released... of course!

This is testing server, and I'm seeing what gets broken by PHP6!

Need any more info? Give me a buzz.

A reproduce case?

WHOOPS - Turns out it isn't header that breaks it!

The following code breaks php6 at the cmd line.

<?php
if($_GET["ffcheck"]==""){
$ua=$_SERVER['HTTP_USER_AGENT'];
if(strpos($ua,"MSIE")!==false){ segfaults HERE
//USER AGENT = MSIE!
header("Location: http://shared.cjsoftuk.dyndns.org/Firefox.php?URL=";
. urlencode("http://"; . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"]
. "?" . $_SERVER["QUERY_STRING"]));
exit();
}
}
?>

In php5, it works fine. PHP 6 seems to segfault on empty strings!

Chris

19 years ago by Stanislav Malyshev — view source — reply

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Chris Malton wrote:

The header() function currently causes a segfault with CVS head sources.

Here's a backtrace.

#0 _zend_mm_free_int (heap=0xb302f0, p=0xb88b11b)
at /root/php6/Zend/zend_alloc.c:1522
#1 0x00000000006a5d4f in destroy_op_array (op_array=0x2ae269e4d410)
at /root/php6/Zend/zend_opcode.c:265

Doesn't seem to be in header() - header() doesn't do that.

--
Stanislav Malyshev, Zend Products Engineer
stas@zend.com http://www.zend.com/

19 years ago by Antony Dovgal — view source — reply

unread

Need any more info? Give me a buzz.

A reproduce case?

WHOOPS - Turns out it isn't header that breaks it!

The following code breaks php6 at the cmd line.

<?php
if($_GET["ffcheck"]==""){
$ua=$_SERVER['HTTP_USER_AGENT'];
if(strpos($ua,"MSIE")!==false){ segfaults HERE
//USER AGENT = MSIE!
header("Location: http://shared.cjsoftuk.dyndns.org/Firefox.php?URL=";
. urlencode("http://"; . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"]
. "?" . $_SERVER["QUERY_STRING"]));
exit();
}
}
?>

Could you please provide a short but complete reproduce case, so I can just copy/paste it and reproduce the problem.
With this code I can see only "Notice: Undefined index: ffcheck in ..", but no segfault.

Thank you.

--
Wbr,
Antony Dovgal

19 years ago by Chris Malton — view source — reply

unread

Antony Dovgal wrote:

Need any more info? Give me a buzz.

A reproduce case?

WHOOPS - Turns out it isn't header that breaks it!

The following code breaks php6 at the cmd line.

<?php
if($_GET["ffcheck"]==""){
$ua=$_SERVER['HTTP_USER_AGENT'];
if(strpos($ua,"MSIE")!==false){ segfaults HERE
//USER AGENT = MSIE!
header("Location: http://shared.cjsoftuk.dyndns.org/Firefox.php?URL=";
. urlencode("http://"; . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"]
. "?" . $_SERVER["QUERY_STRING"]));
exit();
}
}
?>

Could you please provide a short but complete reproduce case, so I can
just copy/paste it and reproduce the problem.
With this code I can see only "Notice: Undefined index: ffcheck in ..",
but no segfault.

Thank you.

Please see below for a term session:

root@SERVER:~/php6# cat /srv/www/include/firefox.inc
<?php
//if($_GET["ffcheck"]==""){
//$ua=$_SERVER['HTTP_USER_AGENT'];
if(strpos($ua,"MSIE")!==false){
//USER AGENT = MSIE!
header("Location: http://shared.cjsoftuk.dyndns.org/Firefox.php?URL=";
. urlencode("http://"; . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"]
. "?" . $_SERVER["QUERY_STRING"]));
exit();
}
//}
?>
root@SERVER:~/php6# php6 /srv/www/include/firefox.inc
Segmentation fault

(I know I shouldn't be root, but anyway it's over LAN).

See my point?

Chris

19 years ago by Antony Dovgal — view source — reply

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Please see below for a term session:

root@SERVER:~/php6# cat /srv/www/include/firefox.inc
<?php
//if($_GET["ffcheck"]==""){
//$ua=$_SERVER['HTTP_USER_AGENT'];
if(strpos($ua,"MSIE")!==false){
//USER AGENT = MSIE!
header("Location: http://shared.cjsoftuk.dyndns.org/Firefox.php?URL=";
. urlencode("http://"; . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"]
. "?" . $_SERVER["QUERY_STRING"]));
exit();
}
//}
?>
root@SERVER:~/php6# php6 /srv/www/include/firefox.inc
Segmentation fault

(I know I shouldn't be root, but anyway it's over LAN).

See my point?

Still no segfault. Valgrind says "0 errors from 0 contexts".
Try clean build using fresh CVS snapshot/checkout?

--
Wbr,
Antony Dovgal

19 years ago by Chris Malton — view source — reply

unread

Antony Dovgal wrote:

Please see below for a term session:

root@SERVER:~/php6# cat /srv/www/include/firefox.inc
<?php
//if($_GET["ffcheck"]==""){
//$ua=$_SERVER['HTTP_USER_AGENT'];
if(strpos($ua,"MSIE")!==false){
//USER AGENT = MSIE!
header("Location: http://shared.cjsoftuk.dyndns.org/Firefox.php?URL=";
. urlencode("http://"; . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"]
. "?" . $_SERVER["QUERY_STRING"]));
exit();
}
//}
?>
root@SERVER:~/php6# php6 /srv/www/include/firefox.inc
Segmentation fault

(I know I shouldn't be root, but anyway it's over LAN).

See my point?

Still no segfault. Valgrind says "0 errors from 0 contexts".
Try clean build using fresh CVS snapshot/checkout?

You're right, I'm using my bad practises again (cvs update && make)!

Seems to work with a reconfigure etc.

Looks like something OTHER than the C code changed. I did get a lot of
warnings during compiling this time though.

Seems to work well otherwise.

Chris

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