ID: 36891 Updated by: [EMAIL PROTECTED] Reported By: alexey at kovyrin dot net -Status: Open +Status: Feedback Bug Type: Reproducible crash Operating System: RHEL 4 on AMD64 PHP Version: 4.4.2 New Comment:
A short but complete reproduce code would definitely help to understand and fix the issue. Previous Comments: ------------------------------------------------------------------------ [2006-03-30 18:51:15] alexey at kovyrin dot net I have tried last snapshot of php and now everything is ok. But last snapshot of php4 crashes as I described. How can I help to find this strange error in php4? ------------------------------------------------------------------------ [2006-03-28 16:59:21] [EMAIL PROTECTED] You said that it doesn't depend on the code. And you can always fire up another apache instance listening on different port. No, I don't have any other advices, because what you've told us is basically "we can see some crashes". Well, I'd say that's bad. But how to reproduce it? ------------------------------------------------------------------------ [2006-03-28 16:50:04] alexey at kovyrin dot net Unfortunately, I can not test php-5.1 now bacause our intensively used code is not compatible with php-5.1. If there are another advices, I'm ready to try them. P.S. PHP-5.1 I will be able to test somewhat later (when system load will be less then now). ------------------------------------------------------------------------ [2006-03-28 16:08:10] [EMAIL PROTECTED] Please try using this CVS snapshot: http://snaps.php.net/php5.1-latest.tar.gz For Windows: http://snaps.php.net/win32/php5.1-win32-latest.zip ------------------------------------------------------------------------ [2006-03-28 14:20:00] alexey at kovyrin dot net Description: ------------ We have php 4.4.2.X (as for now now - last 4.4.2-dev) installed as apache2filter on apache 2.0.52. Server is not under high load (10-100 requests per minute). 5-10% of the requests are failing with following messages in apache error_log: [Tue Mar 28 06:53:46 2006] [notice] child pid 6805 exit signal Segmentation fault (11), possible coredump in /tmp or *** glibc detected *** corrupted double-linked list: 0x000000552af37bf0 *** [Tue Mar 28 06:55:07 2006] [notice] child pid 6800 exit signal Aborted (6), possible coredump in /tmp Crashes are not related to contains of files or something else... it loks like they are random. Backtraces for described crashes are in Actual result section. Reproduce code: --------------- System info: Linux m5 2.6.9-22.0.1.ELsmp #1 SMP Tue Oct 18 18:39:02 EDT 2005 x86_64 x86_64 x86_64 GNU/Linux libc version: libc-2.3.4 Apache Server version: Apache/2.0.52 PHP Info: [PHP Modules] ctype domxml ftp mysql oci8 overload pcntl pcre posix session sockets standard tokenizer wddx xml xmlrpc zlib Actual result: -------------- First error (segfault): #0 0x0000002a9a0c8eab in zend_fetch_var_address ( opline=0x552af39a48, Ts=0x7fbfffab30, type=1) at /usr/src/php_snap/php4-STABLE-200603281036/Zend/zend_execute.c:624 624 Ts[opline->result.u.var].var.ptr_ptr = retval; (gdb) bt #0 0x0000002a9a0c8eab in zend_fetch_var_address (opline=0x552af39a48, Ts=0x7fbfffab30, type=1) at /usr/src/php_snap/php4-STABLE-200603281036/Zend/zend_execute.c:624 #1 0x0000002a9a0cc555 in execute (op_array=0x552afa5ab8) at /usr/src/php_snap/php4-STABLE-200603281036/Zend/zend_execute.c:1278 #2 0x0000002a9a0cebbc in execute (op_array=0x552ae71a08) at /usr/src/php_snap/php4-STABLE-200603281036/Zend/zend_execute.c:1719 #3 0x0000002a9a0bbdbe in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /usr/src/php_snap/php4-STABLE-200603281036/Zend/zend.c:934 #4 0x0000002a9a08e443 in php_execute_script (primary_file=0x7fbffff2b0) at /usr/src/php_snap/php4-STABLE-200603281036/main/main.c:1753 #5 0x0000002a9a0d8dca in php_handler (r=0x552adc7f38) at /usr/src/php_snap/php4-STABLE-200603281036/sapi/apache2handler/sapi_apache2.c:581 #6 0x000000552aac79e3 in ap_run_handler () from /usr/sbin/httpd #7 0x000000552aac7ea1 in ap_invoke_handler () from /usr/sbin/httpd #8 0x000000552aac4ca8 in ap_process_request () from /usr/sbin/httpd #9 0x000000552aac0089 in _start () from /usr/sbin/httpd #10 0x000000552aad1683 in ap_run_process_connection () from /usr/sbin/httpd #11 0x000000552aac5b10 in ap_graceful_stop_signalled () from /usr/sbin/httpd #12 0x000000552aac5dea in ap_graceful_stop_signalled () from /usr/sbin/httpd #13 0x000000552aac5e94 in ap_graceful_stop_signalled () from /usr/sbin/httpd #14 0x000000552aac65cb in ap_mpm_run () from /usr/sbin/httpd #15 0x000000552aacccdf in main () from /usr/sbin/httpd -------------------------------------- Second error (glibc error): (gdb) bt #0 0x0000002a9662637d in raise () from /lib64/tls/libc.so.6 #1 0x0000002a96627aae in abort () from /lib64/tls/libc.so.6 #2 0x0000002a9665abe1 in __libc_message () from /lib64/tls/libc.so.6 #3 0x0000002a96660782 in _int_free () from /lib64/tls/libc.so.6 #4 0x0000002a966609b6 in free () from /lib64/tls/libc.so.6 #5 0x0000002a9a0aa85e in _efree (ptr=Variable "ptr" is not available. ) at /usr/src/php_snap/php4-STABLE-200603281036/Zend/zend_alloc.c:266 #6 0x0000002a9a0b18a6 in _zval_ptr_dtor (zval_ptr=0x552af37dc0) at /usr/src/php_snap/php4-STABLE-200603281036/Zend/zend_execute_API.c:289 #7 0x0000002a9a0c0962 in zend_hash_destroy (ht=0x552afea7c8) at /usr/src/php_snap/php4-STABLE-200603281036/Zend/zend_hash.c:558 #8 0x0000002a9a0c0862 in zend_hash_del_key_or_index (ht=0x552acefe20, arKey=0x552afea730 "smarty", nKeyLength=7, h=Variable "h" is not available. ) at /usr/src/php_snap/php4-STABLE-200603281036/Zend/zend_hash.c:529 #9 0x0000002a9a0c0ec1 in zend_hash_reverse_apply (ht=0x552acefe20, apply_func=0x2a9a0b16e0 <is_not_internal_class>) at /usr/src/php_snap/php4-STABLE-200603281036/Zend/zend_hash.c:777 #10 0x0000002a9a0b1ba0 in shutdown_executor () at /usr/src/php_snap/php4-STABLE-200603281036/Zend/zend_execute_API.c:200 #11 0x0000002a9a0bb5b8 in zend_deactivate () at /usr/src/php_snap/php4-STABLE-200603281036/Zend/zend.c:689 #12 0x0000002a9a08c833 in php_request_shutdown (dummy=Variable "dummy" is not available. ) at /usr/src/php_snap/php4-STABLE-200603281036/main/main.c:999 #13 0x0000002a9a0d8ce0 in php_handler (r=0x552adc1f08) at /usr/src/php_snap/php4-STABLE-200603281036/sapi/apache2handler/sapi_apache2.c:443 #14 0x000000552aac79e3 in ap_run_handler () from /usr/sbin/httpd #15 0x000000552aac7ea1 in ap_invoke_handler () from /usr/sbin/httpd #16 0x000000552aac4ca8 in ap_process_request () from /usr/sbin/httpd #17 0x000000552aac0089 in _start () from /usr/sbin/httpd #18 0x000000552aad1683 in ap_run_process_connection () from /usr/sbin/httpd #19 0x000000552aac5b10 in ap_graceful_stop_signalled () from /usr/sbin/httpd #20 0x000000552aac5dea in ap_graceful_stop_signalled () from /usr/sbin/httpd #21 0x000000552aac5e94 in ap_graceful_stop_signalled () from /usr/sbin/httpd #22 0x000000552aac65cb in ap_mpm_run () from /usr/sbin/httpd #23 0x000000552aacccdf in main () from /usr/sbin/httpd (gdb) ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=36891&edit=1
