#48034 [Fbk->Ver]: PHP crashes apache when php code is 8192 (8KB) bytes long.

ID: 48034 Updated by: lbarnaud@php.net Reported By: ninzya at inbox dot lv -Status: Feedback +Status: Verified Bug Type: Reproducible crash Operating System: Windows XP PHP Version: 5.3.0RC1 New Comment: It seems related to http://bugs.php.net/bug.php?id=47596 . Not exactly the same problem, though. It seems php_stream_open_for_zend() does not mmap() enough for ZEND_MMAP_AHEAD (PHP_STREAM_OPTION_MMAP_API in plain_wrapper adjusts the mmap length to the filesize, so ignoring ZEND_MMAP_AHEAD), and this may crash when the parser reads ahead of the mmap()ed region. Previous Comments: ------------------------------------------------------------------------ [2009-04-21 12:10:37] pajoye@php.net Thank you for this bug report. To properly diagnose the problem, we need a backtrace to see what is happening behind the scenes. To find out how to generate a backtrace, please read http://bugs.php.net/bugs-generating-backtrace.php for *NIX and http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32 Once you have generated a backtrace, please submit it to this bug report and change the status back to "Open". Thank you for helping us make PHP better. ------------------------------------------------------------------------ [2009-04-21 11:50:51] ninzya at inbox dot lv PHP is installed as apache module. No fancy filtering, default php/apache installation. All php modules disabled. Bug hits only if file size is 8KB exactly (8192 bytes). PHP 5.2.9 also is affected. By the way, Apache 2.2 is not affected. Seems this is apache 2.0 specific problem. Don't know where to post this issue, here, or in Apache bugtracker. ------------------------------------------------------------------------ [2009-04-21 11:40:31] jani@php.net Which apache module? Do you have some fancy filtering going on? Does this happen with PHP 5.2.9 ? Do you have any shared extensions loaded? Any Zend extensions like debugger or cache? (disable those and retry) ------------------------------------------------------------------------ [2009-04-21 11:27:52] ninzya at inbox dot lv http://www.stepanov.lv/pub/bug48034.txt <-- php file contents PHP as module. It crashes by displaying "Apache.exe - Application error" window, saying "The instruction at 0x0085779c referenced memory at 0x061e2000 (this actually varies). The memory could not be read. Click OK to terminate the program." (BTW, what is your formula for bogusness percentage?) ------------------------------------------------------------------------ [2009-04-21 11:14:48] jani@php.net Also: Exactly how does it crash? Are you sure it crashes? How did you configure PHP in Apache? (READ: Not enough information, 99% bogus..) ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/48034 -- Edit this bug report at http://bugs.php.net/?id=48034&edit=1