Bug #52935 [Asn->Csd]: call exit in user_error_handler cause stream relate core

Edit report at https://bugs.php.net/bug.php?id=52935&edit=1 ID: 52935 Updated by: cataphract@php.net Reported by: laruence at yahoo dot com dot cn Summary: call exit in user_error_handler cause stream relate core -Status: Assigned +Status: Closed Type: Bug Package: Streams related Operating System: any PHP Version: 5.2.14 Assigned To: cataphract Block user comment: N Private report: N Previous Comments: ------------------------------------------------------------------------ [2011-07-05 12:09:09] cataphract@php.net Automatic comment from SVN on behalf of cataphract Revision: http://svn.php.net/viewvc/?view=revision&amp;revision=312937 Log: - Fixed bug #52935 (call exit in user_error_handler cause stream relate core). ------------------------------------------------------------------------ [2010-12-14 13:45:55] richard_hu at 163 dot com I have the similar issue, which confused me for quite some time. Though I'm not sure whether it's caused by setting the error handler. On my linux box,using php 5.2.14, I see many apache core files after several days. and BT looks mostly like this: (gdb) bt #0 _zend_mm_free_int (heap=0x6b2f00, p=0x21) at /home/work/php-5.2.14/Zend/zend_alloc.c:1948 #1 0x0000002a95d53069 in php_stream_tidy_wrapper_error_log (wrapper=0x2a962116e0) at /home/work/php-5.2.14/main/streams/streams.c:192 #2 0x0000002a95d5605a in _php_stream_open_wrapper_ex ( path=0x2a9a3267b0 "http://jp01-testing-psp01.jp01:8080/query_patterns/index", mode=0x2a95e5c804 "rb", options=12, opened_path=0x0, context=0x0) at /home/work/php-5.2.14/main/streams/streams.c:1899 #3 0x0000002a95cd81b1 in zif_file_get_contents (ht=-1776162144, return_value=0x2a9a15cdd8, return_value_ptr=Variable "return_value_ptr" is not available. ) at /home/work/php-5.2.14/ext/standard/file.c:541 #4 0x0000002a95d78114 in zend_call_function (fci=0x7fbfff8200, fci_cache=Variable "fci_cache" is not available. ) at /home/work/php-5.2.14/Zend/zend_execute_API.c:1063 #5 0x0000002a95d78a56 in call_user_function_ex (function_table=Variable "function_table" is not available. ) at /home/work/php-5.2.14/Zend/zend_execute_API.c:650 #6 0x0000002a95cce1c8 in zif_call_user_func_array (ht=Variable "ht" is not available. ) at /home/work/php-5.2.14/ext/standard/basic_functions.c:5217 #7 0x0000002a95da57ce in zend_do_fcall_common_helper_SPEC (execute_data=0x7fbfff8560) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:200 #8 0x0000002a95da4de1 in execute (op_array=0x89b390) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:92 #9 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC (execute_data=0x7fbfff9490) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:234 #10 0x0000002a95da4de1 in execute (op_array=0x2a9a1534e0) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:92 #11 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC (execute_data=0x7fbfffa9c0) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:234 #12 0x0000002a95da4de1 in execute (op_array=0x2a99cce868) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:92 #13 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC (execute_data=0x7fbffface0) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:234 #14 0x0000002a95da4de1 in execute (op_array=0x2a99e83f08) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:92 #15 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC (execute_data=0x7fbfffb050) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:234 #16 0x0000002a95da4de1 in execute (op_array=0x2a99e53098) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:92 #17 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC (execute_data=0x7fbfffb420) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:234 #18 0x0000002a95da4de1 in execute (op_array=0x2a99e52f38) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:92 #19 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC (execute_data=0x7fbfffb9b0) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:234 #20 0x0000002a95da4de1 in execute (op_array=0x2a99e52dd0) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:92 #21 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC (execute_data=0x7fbfffbfa0) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:234 #22 0x0000002a95da4de1 in execute (op_array=0x2a968894b8) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:92 #23 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC (execute_data=0x7fbfffc5d0) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:234 #24 0x0000002a95da4de1 in execute (op_array=0x2a96868e40) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:92 #25 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC (execute_data=0x7fbfffc9d0) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:234 #26 0x0000002a95da4de1 in execute (op_array=0x2a96909030) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:92 #27 0x0000002a95da50e3 in zend_do_fcall_common_helper_SPEC (execute_data=0x7fbfffce10) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:234 #28 0x0000002a95da4de1 in execute (op_array=0x2a96821cf8) at /home/work/php-5.2.14/Zend/zend_vm_execute.h:92 #29 0x0000002a95d85ea4 in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /home/work/php-5.2.14/Zend/zend.c:1134 #30 0x0000002a95d42dcd in php_execute_script (primary_file=0x7fbffff2e0) at /home/work/php-5.2.14/main/main.c:2036 #31 0x0000002a95e154a6 in php_handler (r=0x8670d8) at /home/work/php-5.2.14/sapi/apache2handler/sapi_apache2.c:639 #32 0x0000000000436cf3 in ap_run_handler (r=0x8670d8) at config.c:157 #33 0x0000000000437191 in ap_invoke_handler (r=0x8670d8) at config.c:372 #34 0x00000000004666c0 in ap_process_request (r=0x8670d8) at http_request.c:258 #35 0x0000000000463ead in ap_process_http_connection (c=0x855238) at http_core.c:190 #36 0x000000000043d6c3 in ap_run_process_connection (c=0x855238) at connection.c:43 #37 0x000000000047f824 in child_main (child_num_arg=Variable "child_num_arg" is not available. ) at prefork.c:650 #38 0x000000000047fa44 in make_child (s=0x5ce498, slot=1) at prefork.c:746 #39 0x000000000047fade in startup_children (number_to_start=4) at prefork.c:764 #40 0x00000000004802ed in ap_mpm_run (_pconf=Variable "_pconf" is not available. ) at prefork.c:985 #41 0x00000000004249b5 in main (argc=Variable "argc" is not available. ) at main.c:730 ------------------------------------------------------------------------ [2010-10-04 12:16:06] laruence at yahoo dot com dot cn in cli mode , this would not been happend , cause, the stream wrapper is a persistent struct , zend_bailout cause the err_count of stream wrapper struct not be zero when a new request coming. which means , you should run in apache handler or cgi/fastcgi. in cli mode , there only one request loop. sorry for my poor english, and I think, you should make network unreachable, then will be tigger a error with message "Network unreachable", ------------------------------------------------------------------------ [2010-10-02 22:01:58] cataphract@php.net I can't reproduce this. I also don't understand the problem conceptually. php_stream_display_wrapper_errors is called before the bailout, not after so how can PHP segfault there? I must be missing something. Script (run via the CLI): <?php ini_set('default_socket_timeout', 3); function err_handler(){ //var_dump(func_get_args()); exit; return true; } set_error_handler('err_handler'); $client = file_get_contents("http://www.laruence.com/ServiceNoWse.asmx?WSDL"); --- I also made the site unreachable: $ sudo iptables -L OUTPUT -n Chain OUTPUT (policy ACCEPT) target prot opt source destination DROP all -- 0.0.0.0/0 96.0.183.49 ------------------------------------------------------------------------ [2010-09-28 04:35:12] laruence at yahoo dot com dot cn there is some prombles in the example , 1. the domain must be a valid domain 2. the envrion must can't connect to the internet <?php function err_handler(){ exit; return true; } set_error_handler('err_handler'); $client = file_get_contents("http://www.laruence.com/ServiceNoWse.asmx?WSDL"); ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=52935 -- Edit this bug report at https://bugs.php.net/bug.php?id=52935&edit=1