ID: 20108
User updated by: [EMAIL PROTECTED]
Reported By: [EMAIL PROTECTED]
Status: Assigned
Bug Type: Reproducible crash
Operating System: Linux and NetBSD
PHP Version: 4.0CVS-2002-10-20
Assigned To: iliaa
New Comment:
I just re-tested this on a FreeBSD 4.6-RELEASE again and:
------------------------->8
jeroen@hog:~$ uname -a
<?php $a = "boo"; printf("%580.58s\n", $a); ?>
X-Powered-By: PHP/4.1.1
Content-type: text/html
------------------------->8
Notice the many \n's, this could be an empty buffer...
Which is the same I got on OpenBSD 3.1...
Previous Comments:
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[2002-10-26 15:13:38] [EMAIL PROTECTED]
Somewhat reproduced with BSDi 4.2. Not a segfault, but garbage output.
added testcase to CVS.
Updated version.
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[2002-10-26 13:13:00] [EMAIL PROTECTED]
The oops:
8<-------------
jeroen@noc:~$ ulimit -c unlimited
jeroen@noc:~$ php4
<?php $a = "boo"; printf("%580.58s\n", $a); ?>
Segmentation fault (core dumped)
------------->8
The system:
8<-------------
jeroen@noc:~$ uname -a
Linux noc 2.4.18 #1 Wed May 29 22:19:46 CEST 2002 i686 Intel(R)
Celeron(TM) CPU
1200MHz GenuineIntel GNU/Linux
------------->8
It's Debian unstable, current as of 26-Oct-2002
Relevant Debian packages:
ii libc6 2.3.1-3
ii php4-cgi 4.2.3-3
Backtrace:
8<--------------
(gdb) bt
#0 0x402711af in mallopt () from /lib/libc.so.6
#1 0x4027001f in realloc () from /lib/libc.so.6
#2 0x080dd7a3 in _erealloc ()
#3 0x080a6b6a in php_if_stat ()
#4 0x080a8804 in zif_user_printf ()
#5 0x0810c060 in execute ()
#6 0x080ea428 in zend_execute_scripts ()
#7 0x080664cd in php_execute_script ()
#8 0x08064363 in main ()
#9 0x4021b9d3 in __libc_start_main () from /lib/libc.so.6
(gdb) q
-------------->8
I've also tested it on NetBSD, which also segfaulted apache and gave
back a whole lot of wrong things (buffer from previous sessions).
OpenBSD 3.1 + FreeBSD 4.6-RELEASE didn't have this problem
so this could quite well be glibc related, see the traceback above.
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Edit this bug report at http://bugs.php.net/?id=20108&edit=1
