Edit report at https://bugs.php.net/bug.php?id=55070&edit=1
ID: 55070
User updated by: ricardo dot nuno dot rodrigues at hotmail dot com
Reported by: ricardo dot nuno dot rodrigues at hotmail dot com
Summary: SHMOP not working / crash
-Status: Feedback
+Status: Open
Type: Bug
Package: Semaphore related
Operating System: Windows 7 64bit
PHP Version: 5.3.6
Block user comment: N
Private report: N
New Comment:
I tried on CLI mode and have the following error (in attach complete):
Function Arg 1 Arg 2 Arg 3 Source
msvcr90!memcpy+158 02ed3cd8 00000000 00000004
php_shmop!get_module+37f 00000003 02ed38f8 00000000
php5ts!execute_internal+3a 02f00080 00000001 02eb1bc0
php_xdebug_2_1_1_5_3_vc9!get_module+20bc 02f00080 00000001
00000000
php5ts!execute+1122 02f00080 02eb1b00 02eb1bc0
php5ts!execute+583a 02ed3600 038c2ef0 00000000
php5ts!execute+2e8 00000000 00000000 00000000
More:
Analysis Summary
Type Description Recommendation
Error In php__PID__10980__Date__06_14_2011__Time_10_59_20PM__98__First chance
exception 0XC0000005.dmp the assembly instruction at msvcr90!memcpy+158 in
C:\Windows\winsxs\x86_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.5570_none_50
9463cabcb6ef2a\msvcr90.dll from Microsoft Corporation has caused an access
violation exception (0xC0000005) when trying to read from memory location
0x00000000 on thread 0
Please follow up with the vendor Microsoft Corporation for
C:\Windows\winsxs\x86_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.5570_none_50
9463cabcb6ef2a\msvcr90.dll
Error In
php__PID__10276__Date__06_14_2011__Time_10_57_54PM__835__Second_Chance_Exception
_C0000005.dmp the assembly instruction at msvcr90!memcpy+158 in
C:\Windows\winsxs\x86_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.5570_none_50
9463cabcb6ef2a\msvcr90.dll from Microsoft Corporation has caused an access
violation exception (0xC0000005) when trying to read from memory location
0x00000000 on thread 0
Please follow up with the vendor Microsoft Corporation for
C:\Windows\winsxs\x86_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.5570_none_50
9463cabcb6ef2a\msvcr90.dll
Error In
php__PID__10980__Date__06_14_2011__Time_10_59_25PM__862__Second_Chance_Exception
_C0000005.dmp the assembly instruction at msvcr90!memcpy+158 in
C:\Windows\winsxs\x86_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.5570_none_50
9463cabcb6ef2a\msvcr90.dll from Microsoft Corporation has caused an access
violation exception (0xC0000005) when trying to read from memory location
0x00000000 on thread 0
Please follow up with the vendor Microsoft Corporation for
C:\Windows\winsxs\x86_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.5570_none_50
9463cabcb6ef2a\msvcr90.dll
Error In php__PID__10276__Date__06_14_2011__Time_10_57_48PM__990__First
chance
exception 0XC0000005.dmp the assembly instruction at msvcr90!memcpy+158 in
C:\Windows\winsxs\x86_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.5570_none_50
9463cabcb6ef2a\msvcr90.dll from Microsoft Corporation has caused an access
violation exception (0xC0000005) when trying to read from memory location
0x00000000 on thread 0
Please follow up with the vendor Microsoft Corporation for
C:\Windows\winsxs\x86_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.5570_none_50
9463cabcb6ef2a\msvcr90.dll
Information DebugDiag determined that this dump file
(php__PID__10980__Date__06_14_2011__Time_10_59_25PM__862__Second_Chance_Exceptio
n_C0000005.dmp) is a crash dump and did not perform any hang analysis. If you
wish to enable combined crash and hang analysis for crash dumps, edit the
CrashHangAnalysis.asp script (located in the DebugDiag\Scripts folder) and set
the g_DoCombinedAnalysis constant to True.
Previous Comments:
------------------------------------------------------------------------
[2011-06-29 18:42:28] fel...@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.
------------------------------------------------------------------------
[2011-06-29 16:52:56] ricardo dot nuno dot rodrigues at hotmail dot com
Description:
------------
If I make such a intensive read of something saved by shmop, the apache will
crash.
If it was intensive write, the crash is sooner.
This only happens in Win32 (not in Linux)
Test script:
---------------
<?php
$key = 1;
$value = 1000;
$nbr_of_read_tests = 100000;
$shm_id = shmop_open( $key, "c", 0644, strlen($value));
shmop_write ( $shm_id , $value , 0);
shmop_close($shm_id);
for ($i = 1; $i <= $nbr_of_read_tests; $i++) {
$shm_id = shmop_open($key, "a", 0, 0);
shm_size = shmop_size($shm_id);
$returnedValue = shmop_read ( $shm_id , 0 , $shm_size );
shmop_close($shm_id);
}
shmop_delete($shm_id);
shmop_close($shm_id);
?>
Expected result:
----------------
work without any problem.
In Linux it works.
Actual result:
--------------
Crash of Apache
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=55070&edit=1
