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Last updated: Mon May 25 06:01:28 2020 UTC |
Description: ------------ I made a simple PHP script that calls another using the "virtual" function. If the second script fails to execute (my test script contains an invalid function call) and I then call "getallheaders()", the Apache worker will segfault: AH00051: child pid 6094 exit signal Segmentation fault (11) Test script: --------------- first.php: <html> <body> <?php virtual("/second.php"); ?><br> <?php print_r(getallheaders()); ?> </body> </html> second.php: <?php foohaaa(); ?> Expected result: ---------------- Expecting to see something like this on the page (works when I change "foohaa();" to something valid in second.php): Array ( [Host] => 127.0.0.1:9110 [User-Agent] => Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:43.0) Gecko/20100101 Firefox/43.0 [Accept] => text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 [Accept-Language] => en-US,en;q=0.5 [Accept-Encoding] => gzip, deflate [Connection] => keep-alive [Cache-Control] => max-age=0 ) Actual result: -------------- (gdb) bt #0 zend_do_fcall_common_helper_SPEC (execute_data=0x7fd4eed070e0) at .../php-5.6.10/Zend/zend_vm_execute.h:488 #1 0x00007fd4e6a23ad8 in execute_ex (execute_data=0x7fd4eed070e0) at .../php-5.6.10/Zend/zend_vm_execute.h:363 #2 0x00007fd4e69eb2b0 in zend_execute_scripts (type=type@entry=8, retval=retval@entry=0x0, file_count=file_count@entry=3) at .../php-5.6.10/Zend/zend.c:1341 #3 0x00007fd4e6989a72 in php_execute_script (primary_file=primary_file@entry=0x7fff4d33e390) at .../php-5.6.10/main/main.c:2597 #4 0x00007fd4e6a8fc62 in php_handler (r=<optimised out>) at .../php-5.6.10/sapi/apache2handler/sapi_apache2.c:667 #5 0x0000000000457581 in ap_run_handler () #6 0x000000000045803a in ap_invoke_handler () #7 0x0000000000475b84 in ap_process_async_request () #8 0x0000000000475c69 in ap_process_request () #9 0x0000000000471bc4 in ap_process_http_sync_connection () #10 0x0000000000471cd8 in ap_process_http_connection () #11 0x00000000004661da in ap_run_process_connection () #12 0x0000000000466730 in ap_process_connection () #13 0x00000000004803dc in child_main () #14 0x00000000004805d2 in make_child () #15 0x00000000004809bd in perform_idle_server_maintenance () #16 0x00000000004810c9 in prefork_run () #17 0x0000000000434ad3 in ap_run_mpm () #18 0x000000000042c9a9 in main ()