Bug #78620 [Csd->ReO]: Out of memory error

Edit report at https://bugs.php.net/bug.php?id=78620&edit=1 ID: 78620 Updated by: cmb@php.net Reported by: v-altruo at microsoft dot com Summary: Out of memory error -Status: Closed +Status: Re-Opened Type: Bug Package: Scripting Engine problem Operating System: Windows Server 2012 R2 PHP Version: 7.2.23 Assigned To: cmb Block user comment: N Private report: N New Comment: Cf. <https://github.com/php/php-src/pull/4766#discussion_r330658679>. Previous Comments: ------------------------------------------------------------------------ [2019-10-02 17:04:33] cmb@php.net Automatic comment on behalf of cmbecker69@gmx.de Revision: http://git.php.net/?p=php-src.git;a=commit;h=f2fb37a772908a9331e67f583fddcc4b1b186ccf Log: Revert &quot;Fix #78620: Out of memory error&quot; ------------------------------------------------------------------------ [2019-10-02 16:23:17] cmb@php.net Automatic comment on behalf of cmbecker69@gmx.de Revision: http://git.php.net/?p=php-src.git;a=commit;h=8ce04df7e0108a10f7b782a28204e9384ab1129c Log: Fix #78620: Out of memory error ------------------------------------------------------------------------ [2019-10-02 14:25:23] cmb@php.net The following pull request has been associated: Patch Name: Fix #78620: Out of memory error On GitHub: https://github.com/php/php-src/pull/4766 Patch: https://github.com/php/php-src/pull/4766.patch ------------------------------------------------------------------------ [2019-10-01 22:10:21] cmb@php.net Oh, indeed! The problem is that ZEND_MM_ALIGNED_SIZE_EX evaluates to 0[1], since (size + alignment -1) overflows (in this case size == 4294901777 && alignment == 2097152), and we don't catch that. [1] <https://github.com/php/php-src/blob/php-7.2.23/Zend/zend_alloc.c#L1458> ------------------------------------------------------------------------ [2019-10-01 17:21:15] v-altruo at microsoft dot com Description: ------------ Test fails with x86 version for both nts/ts builds regardless of opcache on/off. Test also fails for 7.2.23. Failed test file location: ext\standard\tests\strings\wordwrap_memory_limit.phpt Expected result: ---------------- Fatal error: Allowed memory size of 134217728 bytes exhausted%s(tried to allocate %d bytes) in %s on line %d Actual result: -------------- VirtualAlloc() failed: [0x00000057] The parameter is incorrect. VirtualAlloc() failed: [0x00000057] The parameter is incorrect. Fatal error: Out of memory (allocated 2097152) (tried to allocate 4294901777 bytes) in C:\..\ext\standard\tests\strings\wordwrap_memory_limit.php on line 5 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=78620&edit=1