Bug #51977 [Asn]: thttpd segfault on X86_64?
Edit report at https://bugs.php.net/bug.php?id=51977&edit=1
ID: 51977
Updated by: sas@php.net
Reported by: znfwhy at 163 dot com
Summary: thttpd segfault on X86_64?
Status: Assigned
Type: Bug
Package: Other web server
Operating System: Debian Squeeze
PHP Version: 5.2.13
Assigned To: sas
Block user comment: N
Private report: N
New Comment:
Hi,
please reopen ticket if this particular issue reoccurs.
Preferrably try another web server..
Thank you for using PHP.
Best
Sascha
Previous Comments:
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[2010-06-03 05:08:56] znfwhy at 163 dot com
Recompiled php5 with --enable-debug, and backtrace info listed below.
But this issue is cased by line 1770, file sapi/thttpd/thttpd_patch of php5.
Type miss match whiling convert pointer to int on X86_64.
(gdb) bt
#0 0x0000003d7d278d80 in strlen () from /lib/libc.so.6
#1 0x0000003d7d278ab6 in strdup () from /lib/libc.so.6
#2 0x000000000043b693 in thttpd_request_ctor () at php_thttpd.c:458
#3 0x000000000043b848 in thttpd_real_php_request (hc=0xa1f300, show_source=0)
at php_thttpd.c:671
#4 0x000000000043b938 in thttpd_php_request (hc=0xa1f300, show_source=0)
at php_thttpd.c:704
#5 0x0000000000432c44 in really_start_request (hc=0xa1f300,
nowP=0x7fff4b0bba20) at libhttpd.c:3708
#6 0x0000000000433077 in httpd_start_request (hc=0xa1f300,
nowP=0x7fff4b0bba20) at libhttpd.c:3801
#7 0x000000000042707c in boot_request (c=0x9fb880, tvP=0x7fff4b0bba20)
at thttpd.c:1548
#8 0x00000000004277a3 in handle_read_body (c=0x9fb880, tvP=0x7fff4b0bba20)
at thttpd.c:1774
#9 0x0000000000424a7d in main (argc=3, argv=0x7fff4b0bcc68) at thttpd.c:617
------------------------------------------------------------------------
[2010-06-02 17:26:22] johannes@php.net
The thttpd code isn't really maintained since 2005. I looked throught code but couldn't
find the relevant strdup call. Could you please recompile PHP using --enable-debug and then generate
a "bt full", maybe the issue can be found then.
------------------------------------------------------------------------
[2010-06-02 17:18:29] znfwhy at 163 dot com
Description:
------------
HTTP POST with 16KB more content will cause thttpd segfault on X86_64.
here is the back trace result:
...
Program received signal SIGSEGV, Segmentation fault.
0x0000003d7d278d80 in strlen () from /lib/libc.so.6
(gdb) bt
#0 0x0000003d7d278d80 in strlen () from /lib/libc.so.6
#1 0x0000003d7d278ab6 in strdup () from /lib/libc.so.6
#2 0x0000000000432cf0 in thttpd_php_request ()
#3 0x000000000042d7bb in httpd_start_request ()
#4 0x0000000000423a84 in _start ()
Test script:
---------------
<html>
<head>
PHP5 test page
</head>
<body>
<div id=main style="width: 130px; height: 130px;">
<form method="POST" enctype="text/html"
action="/test.php">
<textarea name=test>
</textarea>
<input type="submit" value="submit">
</form>
</div>
</body>
</html>
Expected result:
----------------
info of PHP5 printed by test.php.
Actual result:
--------------
nothing, but thttpd exit with segfault.
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=51977&edit=1
Thread (6 messages)