0001173: SIGFPE in xdebug_get_monitored_functions()

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0001173

Xdebug

Usage problems (Wrong Results)

public

2015-07-18 10:03

2015-11-05 15:09

Reporter

sebastian

Assigned To

derick

Priority

normal

Severity

crash

Reproducibility

always

Status

closed

Resolution

fixed

Platform

x86_64

Linux

OS Version

Irrelevant

Product Version

2.3.3

Target Version

Fixed in Version

2.4.0beta1

Summary

0001173: SIGFPE in xdebug_get_monitored_functions()

Description

xdebug_get_monitored_functions() crashes when xdebug_start_function_monitor() was called with empty array.

Steps To Reproduce

$ cat /tmp/test.php
<?php
xdebug_start_function_monitor([]);
$functions = xdebug_get_monitored_functions();

$ /usr/local/php-5.6/bin/php /tmp/test.php
[1] 6628 floating point exception (core dumped) /usr/local/php-5.6/bin/php /tmp/test.php

Additional Information

#0 0x00007fffe8141fc4 in xdebug_hash_extended_find () from /usr/local/php-5.6/lib/php/extensions/debug-non-zts-20131226/xdebug.so
#1 0x00007fffe8147849 in xdebug_add_stack_frame () from /usr/local/php-5.6/lib/php/extensions/debug-non-zts-20131226/xdebug.so
0000002 0x00007fffe812ae69 in xdebug_execute_internal () from /usr/local/php-5.6/lib/php/extensions/debug-non-zts-20131226/xdebug.so
0000003 0x00000000009fc829 in zend_do_fcall_common_helper_SPEC (execute_data=0x7ffff7f9d240) at /usr/local/src/php/src/Zend/zend_vm_execute.h:560
0000004 0x0000000000a02137 in ZEND_DO_FCALL_SPEC_CONST_HANDLER (execute_data=0x7ffff7f9d240) at /usr/local/src/php/src/Zend/zend_vm_execute.h:2602
0000005 0x00000000009ff3d9 in ZEND_USER_OPCODE_SPEC_HANDLER (execute_data=0x7ffff7f9d240) at /usr/local/src/php/src/Zend/zend_vm_execute.h:1330
0000006 0x00000000009fbe61 in execute_ex (execute_data=0x7ffff7f9d240) at /usr/local/src/php/src/Zend/zend_vm_execute.h:363
0000007 0x00007fffe812aa04 in xdebug_execute_ex () from /usr/local/php-5.6/lib/php/extensions/debug-non-zts-20131226/xdebug.so
0000008 0x00000000009fbee8 in zend_execute (op_array=0x7ffff7e0d7f0) at /usr/local/src/php/src/Zend/zend_vm_execute.h:388
0000009 0x00000000009b8573 in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /usr/local/src/php/src/Zend/zend.c:1341
0000010 0x00000000009223c4 in php_execute_script (primary_file=0x7fffffffd9f0) at /usr/local/src/php/src/main/main.c:2597
0000011 0x0000000000a6a396 in do_cli (argc=2, argv=0x1329420) at /usr/local/src/php/src/sapi/cli/php_cli.c:994
0000012 0x0000000000a6b4c2 in main (argc=2, argv=0x1329420) at /usr/local/src/php/src/sapi/cli/php_cli.c:1378

Tags

No tags attached.

Operating System

PHP Version

5.6-dev

Attached Files

Relationships

Notes
(0003153) derick (administrator) 2015-07-18 15:05	Are you sure this is in 2.3.3? :-) In any case, a PR: https://github.com/xdebug/xdebug/pull/192 [^] Will merge when Travis is done.

(0003154) derick (administrator) 2015-07-18 15:07	Thanks for the report and short reproduce script. I've merged a fix.

Issue History
Date Modified	Username	Field	Change
2015-07-18 10:03	sebastian	New Issue
2015-07-18 15:05	derick	Note Added: 0003153
2015-07-18 15:07	derick	Note Added: 0003154
2015-07-18 15:07	derick	Status	new => closed
2015-07-18 15:07	derick	Assigned To	=> derick
2015-07-18 15:07	derick	Resolution	open => fixed
2015-07-18 15:07	derick	Fixed in Version	=> 3.0.0dev
2015-11-05 15:09	derick	Fixed in Version	3.0.0dev => 2.4.0beta1
2016-07-31 13:36	derick	Category	Usage problems => Usage problems (Crashes)
2016-07-31 13:38	derick	Category	Usage problems (Crashes) => Usage problems (Wrong Results)