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 0x00007f3168507343 in _zend_mm_free_canary_int (heap=0x7f316e2b8a30, p=0xe781bdf254723a17) at /build/buildd/php5-5.3.2/Zend/zend_alloc_canary.c:2090
2090 /build/buildd/php5-5.3.2/Zend/zend_alloc_canary.c: No such file or directory.
in /build/buildd/php5-5.3.2/Zend/zend_alloc_canary.c
(gdb) bt
#0 0x00007f3168507343 in _zend_mm_free_canary_int (heap=0x7f316e2b8a30, p=0xe781bdf254723a17) at /build/buildd/php5-5.3.2/Zend/zend_alloc_canary.c:2090
#1 0x00007f31684e693d in _zval_dtor_func (zvalue=0x7f316e4f72a8) at /build/buildd/php5-5.3.2/Zend/zend_variables.c:36
#2 0x00007f31684da9bd in _zval_ptr_dtor (zval_ptr=0x7f316e4f9b68) at /build/buildd/php5-5.3.2/Zend/zend_variables.h:35
#3 0x00007f31684f3642 in zend_hash_apply_deleter (ht=0x7f3168bdea48, p=0x7f316e4f9b50) at /build/buildd/php5-5.3.2/Zend/zend_hash.c:813
#4 0x00007f31684f38c8 in zend_hash_graceful_reverse_destroy (ht=0x7f3168bdea48) at /build/buildd/php5-5.3.2/Zend/zend_hash.c:848
#5 0x00007f31684daf6e in shutdown_executor () at /build/buildd/php5-5.3.2/Zend/zend_execute_API.c:256
#6 0x00007f31684e76d2 in zend_deactivate () at /build/buildd/php5-5.3.2/Zend/zend.c:962
#7 0x00007f3168493385 in php_request_shutdown (dummy=0x7f316e2b8a30) at /build/buildd/php5-5.3.2/main/main.c:1649
#8 0x00007f3168573dc7 in php_handler (r=0x7f3168573dc7) at /build/buildd/php5-5.3.2/sapi/apache2handler/sapi_apache2.c:512
#9 0x00007f316c337140 in ap_run_handler (r=0x7f316e536a68) at /build/buildd/apache2-2.2.14/server/config.c:159
#10 0x00007f316c33aaa8 in ap_invoke_handler (r=0x7f316e536a68) at /build/buildd/apache2-2.2.14/server/config.c:373
#11 0x00007f316c34849c in ap_internal_redirect (new_uri=<value optimized out>, r=<value optimized out>) at /build/buildd/apache2-2.2.14/modules/http/http_request.c:501
#12 0x00007f3165b2fc95 in ?? () from /usr/lib/apache2/modules/mod_rewrite.so
#13 0x00007f316c337140 in ap_run_handler (r=0x7f316e53ca38) at /build/buildd/apache2-2.2.14/server/config.c:159
#14 0x00007f316c33aaa8 in ap_invoke_handler (r=0x7f316e53ca38) at /build/buildd/apache2-2.2.14/server/config.c:373
#15 0x00007f316c348678 in ap_process_request (r=0x7f316e53ca38) at /build/buildd/apache2-2.2.14/modules/http/http_request.c:282
#16 0x00007f316c345528 in ap_process_http_connection (c=0x7f316e525728) at /build/buildd/apache2-2.2.14/modules/http/http_core.c:190
#17 0x00007f316c33ecf8 in ap_run_process_connection (c=0x7f316e525728) at /build/buildd/apache2-2.2.14/server/connection.c:43
#18 0x00007f316c34d037 in child_main (child_num_arg=<value optimized out>) at /build/buildd/apache2-2.2.14/server/mpm/prefork/prefork.c:662
#19 0x00007f316c34d34a in make_child (s=0x7f316e126938, slot=31) at /build/buildd/apache2-2.2.14/server/mpm/prefork/prefork.c:758
#20 0x00007f316c34d67b in startup_children (_pconf=<value optimized out>, plog=<value optimized out>, s=<value optimized out>) at /build/buildd/apache2-2.2.14/server/mpm/prefork/prefork.c:776
#21 ap_mpm_run (_pconf=<value optimized out>, plog=<value optimized out>, s=<value optimized out>) at /build/buildd/apache2-2.2.14/server/mpm/prefork/prefork.c:997
#22 0x00007f316c323350 in main (argc=3, argv=0x7fff4c5330e8) at /build/buildd/apache2-2.2.14/server/main.c:742
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'. free_canary_ int (heap=0x7f316e2 b8a30, p=0xe781bdf2547 23a17) at /build/ buildd/ php5-5. 3.2/Zend/ zend_alloc_ canary. c:2090 buildd/ php5-5. 3.2/Zend/ zend_alloc_ canary. c: No such file or directory. buildd/ php5-5. 3.2/Zend/ zend_alloc_ canary. c free_canary_ int (heap=0x7f316e2 b8a30, p=0xe781bdf2547 23a17) at /build/ buildd/ php5-5. 3.2/Zend/ zend_alloc_ canary. c:2090 0x7f316e4f72a8) at /build/ buildd/ php5-5. 3.2/Zend/ zend_variables. c:36 0x7f316e4f9b68) at /build/ buildd/ php5-5. 3.2/Zend/ zend_variables. h:35 apply_deleter (ht=0x7f3168bdea48, p=0x7f316e4f9b50) at /build/ buildd/ php5-5. 3.2/Zend/ zend_hash. c:813 graceful_ reverse_ destroy (ht=0x7f3168bdea48) at /build/ buildd/ php5-5. 3.2/Zend/ zend_hash. c:848 buildd/ php5-5. 3.2/Zend/ zend_execute_ API.c:256 buildd/ php5-5. 3.2/Zend/ zend.c: 962 shutdown (dummy= 0x7f316e2b8a30) at /build/ buildd/ php5-5. 3.2/main/ main.c: 1649 buildd/ php5-5. 3.2/sapi/ apache2handler/ sapi_apache2. c:512 buildd/ apache2- 2.2.14/ server/ config. c:159 buildd/ apache2- 2.2.14/ server/ config. c:373 redirect (new_uri=<value optimized out>, r=<value optimized out>) at /build/ buildd/ apache2- 2.2.14/ modules/ http/http_ request. c:501 apache2/ modules/ mod_rewrite. so buildd/ apache2- 2.2.14/ server/ config. c:159 buildd/ apache2- 2.2.14/ server/ config. c:373 buildd/ apache2- 2.2.14/ modules/ http/http_ request. c:282 http_connection (c=0x7f316e525728) at /build/ buildd/ apache2- 2.2.14/ modules/ http/http_ core.c: 190 process_ connection (c=0x7f316e525728) at /build/ buildd/ apache2- 2.2.14/ server/ connection. c:43 num_arg= <value optimized out>) at /build/ buildd/ apache2- 2.2.14/ server/ mpm/prefork/ prefork. c:662 buildd/ apache2- 2.2.14/ server/ mpm/prefork/ prefork. c:758 buildd/ apache2- 2.2.14/ server/ mpm/prefork/ prefork. c:776 buildd/ apache2- 2.2.14/ server/ mpm/prefork/ prefork. c:997 30e8) at /build/ buildd/ apache2- 2.2.14/ server/ main.c: 742
Program terminated with signal 11, Segmentation fault.
#0 0x00007f3168507343 in _zend_mm_
2090 /build/
in /build/
(gdb) bt
#0 0x00007f3168507343 in _zend_mm_
#1 0x00007f31684e693d in _zval_dtor_func (zvalue=
#2 0x00007f31684da9bd in _zval_ptr_dtor (zval_ptr=
#3 0x00007f31684f3642 in zend_hash_
#4 0x00007f31684f38c8 in zend_hash_
#5 0x00007f31684daf6e in shutdown_executor () at /build/
#6 0x00007f31684e76d2 in zend_deactivate () at /build/
#7 0x00007f3168493385 in php_request_
#8 0x00007f3168573dc7 in php_handler (r=0x7f3168573dc7) at /build/
#9 0x00007f316c337140 in ap_run_handler (r=0x7f316e536a68) at /build/
#10 0x00007f316c33aaa8 in ap_invoke_handler (r=0x7f316e536a68) at /build/
#11 0x00007f316c34849c in ap_internal_
#12 0x00007f3165b2fc95 in ?? () from /usr/lib/
#13 0x00007f316c337140 in ap_run_handler (r=0x7f316e53ca38) at /build/
#14 0x00007f316c33aaa8 in ap_invoke_handler (r=0x7f316e53ca38) at /build/
#15 0x00007f316c348678 in ap_process_request (r=0x7f316e53ca38) at /build/
#16 0x00007f316c345528 in ap_process_
#17 0x00007f316c33ecf8 in ap_run_
#18 0x00007f316c34d037 in child_main (child_
#19 0x00007f316c34d34a in make_child (s=0x7f316e126938, slot=31) at /build/
#20 0x00007f316c34d67b in startup_children (_pconf=<value optimized out>, plog=<value optimized out>, s=<value optimized out>) at /build/
#21 ap_mpm_run (_pconf=<value optimized out>, plog=<value optimized out>, s=<value optimized out>) at /build/
#22 0x00007f316c323350 in main (argc=3, argv=0x7fff4c53