The bug happens in this line:
if (--(*op_array-refcount)0) {
return;
}
of destroy_op_array, when the code tries to read the refcount, according
to the disassembler:
Dump of assembler code for function destroy_op_array:
0x7f6c321e2080 +0: push %r13
** Tags added: work-intensive
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Segmentation fault in libapache2-mod-php5 when calling methods
https://bugs.launchpad.net/bugs/602689
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Kurt, thanks for taking the time to provide all of these details.
Without any other users able to reproduce or having reported this, its
difficult to look at this bug. I do believe with the stack trace an
extremely skilled engineer can probably have a chance at creating a
reproducible test case.
I pinned the release to 5.3.2-1ubuntu4 and downgraded. This is the core-
dump:
Core was generated by `/usr/sbin/apache2 -k start'.
Program terminated with signal 11, Segmentation fault.
#0 0x7f3168507343 in _zend_mm_free_canary_int (heap=0x7f316e2b8a30,
p=0xe781bdf254723a17) at
bug #589953 has a segfault in the same line of _zend_mm_free_canary_int
but with a different stacktrace.
--
Segmentation fault in libapache2-mod-php5 when calling methods
https://bugs.launchpad.net/bugs/602689
You received this bug notification because you are a member of Ubuntu
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bug #607646 shows a different backtrace and a patch related to pgsql,
but the pgsql package is not installed on my machine.
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Segmentation fault in libapache2-mod-php5 when calling methods
https://bugs.launchpad.net/bugs/602689
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Why are there no debug symbols for the current version of libapache2
-mod-php5?
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Segmentation fault in libapache2-mod-php5 when calling methods
https://bugs.launchpad.net/bugs/602689
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I'm not able to reproduce this on maverick i386 system I tested on. That said,
the bug opener stated that he could only recreate on one system. To attempt
recreate I tried on a fresh ec2 instance:
$ sudo apt-get install libapache2-mod-php5
$ vi /var/www/parta.php /var/www/partb.php
# as above,
The system is AMD64 (I thought this was clear from the backtrace
output).
uname -a
Linux 2.6.32-24-server #38-Ubuntu SMP Mon Jul 5 10:29:32 UTC 2010 x86_64
GNU/Linux
I followed the instructions from the wiki, but there seems to be a
missing package:
apt-get install libapache2-mod-php5-dbgsym
I forced the installation of the debug symbols, but they did not match
the binary:
warning: the debug information found in
/usr/lib/debug//usr/lib/apache2/modules/libphp5.so does not match
/usr/lib/apache2/modules/libphp5.so (CRC mismatch).
warning: the debug information found in
Please see if this bug is the same as bug #531150 .
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Segmentation fault in libapache2-mod-php5 when calling methods
https://bugs.launchpad.net/bugs/602689
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I don't think it is the same as bug #531150:
1. the page is NOT in ~/public_html/ but in a configured virtual host
2. short_tags = on does not help; in php.ini the option
short_open_tag = On
was already active. I added short_tags but it still crashes.
Frankly, I don't quite understand some of
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