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Bug #78620 Out of memory error
Submitted: 2019-10-01 17:21 UTC Modified: 2019-10-03 17:54 UTC
From: v-altruo at microsoft dot com Assigned: cmb (profile)
Status: Closed Package: Scripting Engine problem
PHP Version: 7.2.23 OS: Windows Server 2012 R2
Private report: No CVE-ID: None
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From: v-altruo at microsoft dot com
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 [2019-10-01 17:21 UTC] 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

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 [2019-10-01 22:10 UTC] cmb@php.net
-Status: Open +Status: Verified -Package: Testing related +Package: Scripting Engine problem -PHP Version: 7.3.10 +PHP Version: 7.2.23
 [2019-10-01 22:10 UTC] 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>
 [2019-10-02 14:25 UTC] 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
 [2019-10-02 16:23 UTC] 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 16:23 UTC] cmb@php.net
-Status: Verified +Status: Closed
 [2019-10-02 16:24 UTC] cmb@php.net
-Assigned To: +Assigned To: cmb
 [2019-10-02 17:04 UTC] 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 17:05 UTC] cmb@php.net
-Status: Closed +Status: Re-Opened
 [2019-10-02 17:05 UTC] cmb@php.net 
Cf. <https://github.com/php/php-src/pull/4766#discussion_r330658679>.
 [2019-10-03 17:54 UTC] 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/4776
Patch:      https://github.com/php/php-src/pull/4776.patch
 [2019-10-04 07:15 UTC] cmb@php.net 
Automatic comment on behalf of cmbecker69@gmx.de
Revision: http://git.php.net/?p=php-src.git;a=commit;h=abaf9a76dc933f4d1f2ff3591ced81d4d6dcb652
Log: Fix #78620: Out of memory error
 [2019-10-04 07:15 UTC] cmb@php.net
-Status: Re-Opened +Status: Closed
 
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