Bug #74833 [Fbk]: Random crashes, seemingly related to DateTimeImmutable and mod_php

Edit report at https://bugs.php.net/bug.php?id=74833&edit=1 ID: 74833 Updated by: ab@php.net Reported by: mike dot fellows at shaw dot ca Summary: Random crashes, seemingly related to DateTimeImmutable and mod_php Status: Feedback Type: Bug Package: Apache2 related Operating System: Windows 7 64 bit, MacOs, Linux PHP Version: 7.0.1 to 7.1.6 Assigned To: ab Block user comment: N Private report: N New Comment: Ah, i see i've overseen the backtraces already there. Yeah, the part like this AcXtrnal.dll!NS_FaultTolerantHeap::APIHook_RtlFreeHeap(void *,unsigned long,void *) Unknown ucrtbase.dll!free() Unknown php7ts.dll!zend_hash_reverse_apply(_zend_array * ht, int(*)(_zval_struct *) apply_func) Line 1603 C php7ts.dll!shutdown_executor() Line 376 C php7ts.dll!zend_deactivate() Line 1001 C php7ts.dll!php_request_shutdown(void * dummy) Line 1880 C php7apache2_4.dll!php_handler(request_rec * r) Line 725 C looks very much like the issue already fixed in 7.2. No further backtrace needed. Thanks. Previous Comments: ------------------------------------------------------------------------ [2017-07-01 16:44:10] ab@php.net @nikic, looks pretty much like the topic. TS SAPI, sporadic fails, very much like in many other bugs. @mike dot fellows at shaw dot ca which exact extension do you need to be present to test your code under 7.2? If it builds with 7.2, i can provide it so you can have the exact constellation. It'd be great also if you could provide a backtrace, even a minidump from WER, etc. Thanks. ------------------------------------------------------------------------ [2017-07-01 08:54:24] nikic@php.net Opcache is not loaded by default, so if you did not explicitly enable the extension, you're not using opcache (though you can double check using e.g. phpinfo()). @ab: Can you please check whether this looks like a persistent string issue to you that will be resolved by 7.2? ------------------------------------------------------------------------ [2017-07-01 00:56:57] mike dot fellows at shaw dot ca Thanks for taking time to look and comment on this problem. The PHP_ZTS constant is set to 1 (so yes to ZTS build?). It is the thread safe windows build from php.net. I am not setting any opcache configuration items in PHP.ini, so if I understand the docs correctly that means I am getting opcache.enable = 1 by default? Please correct me if I'm wrong on this. So yes to ZTS and yes to opcache enabled (I think). My database driver (SQL server) does not support PHP 7.2 yet so I'm not sure if I can test 7.2 or not. I will try. Will disabling opcache with 7.1 fix the problem as well? ------------------------------------------------------------------------ [2017-06-30 23:34:20] nikic@php.net Are you using opcache? Are you using ZTS builds? If the answers are no and yes, this sounds like it might be a persistent string corruption issue, in which case you should check whether using a PHP 7.2 alpha resolves the issue. ------------------------------------------------------------------------ [2017-06-30 23:09:32] mike dot fellows at shaw dot ca FWIW here is the Visual Studio: The thread 0x346c has exited with code 0 (0x0). The thread 0x359c has exited with code 0 (0x0). The thread 0x804 has exited with code 0 (0x0). 'httpd.exe' (Win32): Unloaded 'C:\Windows\System32\security.dll' Unhandled exception at 0x0000000077346789 (ntdll.dll) in httpd.exe: 0xC0000005: Access violation reading location 0x00000AEE2AF79F18. The thread 0x37e0 has exited with code 0 (0x0). 'httpd.exe' (Win32): Unloaded 'C:\Windows\System32\1033\msodbcsqlr13.rll' Exception thrown at 0x0000000077346789 (ntdll.dll) in httpd.exe: 0xC0000005: Access violation reading location 0x00000AEE2AF79F18. Unhandled exception at 0x0000000077346789 (ntdll.dll) in httpd.exe: 0xC0000005: Access violation reading location 0x00000AEE2AF79F18. Exception thrown at 0x0000000077346789 (ntdll.dll) in httpd.exe: 0xC0000005: Access violation reading location 0x00000AEE2AF79F18. Unhandled exception at 0x0000000077346789 (ntdll.dll) in httpd.exe: 0xC0000005: Access violation reading location 0x00000AEE2AF79F18. Exception thrown at 0x0000000077346789 (ntdll.dll) in httpd.exe: 0xC0000005: Access violation reading location 0x00000AEE2AF79F18. ... (repeating many times) ------------------------------------------------------------------------ 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 https://bugs.php.net/bug.php?id=74833 -- Edit this bug report at https://bugs.php.net/bug.php?id=74833&edit=1