Created attachment 363904 [details] emerge --info I recently upgraded Apache from 2.2 to 2.4. Everything seemed to work well, however then I noticed random segfaults, and Apache processes hanging after a while. I've recompiled Apache (and PHP) with symbols to try to figure out where it crashes, however there are several different places where it will crash. Here's an example backtrace: Program terminated with signal 11, Segmentation fault. (gdb) bt #0 sapi_remove_header (l=0x2efb0000b10, name=name@entry=0x2efb00341e0 "\212\035GP\233\232\360\237\202\371\017#02\245\272\275\225BIy*\034\342\275C\236\354,\257\332\341o}\342@b\232'\362\241\064\233\340\205B\270\206\221\347\370>\303!\230#0@V\340C\226\313\300Qx<\\\306\354\333G\220\237\236WiB\325Qܻ\t\265!ǵm", len=7) at /var/tmp/portage/dev-lang/php-5.5.6/work/sapis-build/apache2/main/SAPI.c:602 #1 0x000002eff6bf9dd2 in sapi_header_add_op (op=<optimized out>, sapi_header=0x2efda9ed600, tsrm_ls=0x2efb00008c0) at /var/tmp/portage/dev-lang/php-5.5.6/work/sapis-build/apache2/main/SAPI.c:650 #2 0x000002eff6bfb4df in sapi_header_op (op=SAPI_HEADER_REPLACE, arg=arg@entry=0x2efda9ed670, tsrm_ls=tsrm_ls@entry=0x2efb00008c0) at /var/tmp/portage/dev-lang/php-5.5.6/work/sapis-build/apache2/main/SAPI.c:842 #3 0x000002eff6bfb94b in sapi_add_header_ex ( header_line=header_line@entry=0x2eff710a298 "Expires: Thu, 19 Nov 1981 08:52:00 GMT", header_line_len=header_line_len@entry=38, duplicate=duplicate@entry=1 '\001', replace=replace@entry=1 '\001', tsrm_ls=tsrm_ls@entry=0x2efb00008c0) at /var/tmp/portage/dev-lang/php-5.5.6/work/sapis-build/apache2/main/SAPI.c:630 #4 0x000002eff6ae4796 in _php_cache_limiter_nocache (tsrm_ls=0x2efb00008c0) at /var/tmp/portage/dev-lang/php-5.5.6/work/sapis-build/apache2/ext/session/session.c:1212 #5 0x000002eff6ae9d16 in php_session_cache_limiter (tsrm_ls=0x2efb00008c0) at /var/tmp/portage/dev-lang/php-5.5.6/work/sapis-build/apache2/ext/session/session.c:1250 #6 php_session_start (tsrm_ls=tsrm_ls@entry=0x2efb00008c0) at /var/tmp/portage/dev-lang/php-5.5.6/work/sapis-build/apache2/ext/session/session.c:1543 #7 0x000002eff6aea47c in zif_session_start (ht=<optimized out>, return_value=0x2efb0032fe8, return_value_ptr=<optimized out>, this_ptr=<optimized out>, return_value_used=<optimized out>, tsrm_ls=0x2efb00008c0) at /var/tmp/portage/dev-lang/php-5.5.6/work/sapis-build/apache2/ext/session/session.c:2002 #8 0x000002eff6d37846 in zend_do_fcall_common_helper_SPEC (execute_data=<optimized out>, tsrm_ls=0x2efb00008c0) at /var/tmp/portage/dev-lang/php-5.5.6/work/sapis-build/apache2/Zend/zend_vm_execute.h:550 #9 0x000002eff6cf068b in execute_ex (execute_data=0x2efb0005be0, tsrm_ls=0x2efb00008c0) at /var/tmp/portage/dev-lang/php-5.5.6/work/sapis-build/apache2/Zend/zend_vm_execute.h:363 #10 0x000002eff6c6b5d7 in zend_execute_scripts (type=0, type@entry=2, tsrm_ls=0x0, tsrm_ls@entry=0x1, retval=retval@entry=0x0, file_count=0, file_count@entry=1) at /var/tmp/portage/dev-lang/php-5.5.6/work/sapis-build/apache2/Zend/zend.c:1320 #11 0x000002eff6d3b3b2 in php_handler (r=0x0) at /var/tmp/portage/dev-lang/php-5.5.6/work/sapis-build/apache2/sapi/apache2handler/sapi_apache2.c:669 #12 0x0000000000000000 in ?? () Another one: Program terminated with signal 11, Segmentation fault. #0 0x000002c339a83bfc in i_create_execute_data_from_op_array (tsrm_ls=0x2c2f0240730, nested=0 '\000', op_array=0x2c2f0247238) at /var/tmp/portage/dev-lang/php-5.5.6/work/sapis-build/apache2/Zend/zend_execute.c:1632 #1 zend_execute (op_array=0x2c2f0247238, tsrm_ls=0x2c2f0240730) at /var/tmp/portage/dev-lang/php-5.5.6/work/sapis-build/apache2/Zend/zend_vm_execute.h:388 #2 0x000002c3399b85d7 in zend_execute_scripts (type=type@entry=2, tsrm_ls=0x2c2f0240730, tsrm_ls@entry=0x28, retval=0x0, retval@entry=0x2c30c00a538, file_count=file_count@entry=1) at /var/tmp/portage/dev-lang/php-5.5.6/work/sapis-build/apache2/Zend/zend.c:1320 #3 0x000002c339a883b2 in php_handler (r=0x2c2f05b99a0) at /var/tmp/portage/dev-lang/php-5.5.6/work/sapis-build/apache2/sapi/apache2handler/sapi_apache2.c:669 #4 0x000000675bb4c96d in ap_run_handler (r=r@entry=0x2c2f05b99a0) at config.c:169 #5 0x000000675bb4cfcb in ap_invoke_handler (r=r@entry=0x2c2f05b99a0) at config.c:432 #6 0x000000675bb6487a in ap_process_async_request (r=0x2c2f05b99a0) at http_request.c:317 #7 0x000000675bb64b5f in ap_process_request (r=r@entry=0x2c2f05b99a0) at http_request.c:363 #8 0x000000675bb607d5 in ap_process_http_sync_connection (c=0x2c3240331b8) at http_core.c:190 #9 ap_process_http_connection (c=0x2c3240331b8) at http_core.c:231 #10 0x000000675bb5747d in ap_run_process_connection (c=c@entry=0x2c3240331b8) at connection.c:41 #11 0x000000675bb579e0 in ap_process_connection (c=c@entry=0x2c3240331b8, csd=csd@entry=0x2c324032fa0) at connection.c:202 #12 0x000000675bb6c28d in process_socket (bucket_alloc=<optimized out>, my_thread_num=1, my_child_num=0, sock=0x2c324032fa0, p=0x2c324032f18, thd=0x675e664b48) at worker.c:620 #13 worker_thread (thd=0x675e664b48, dummy=<optimized out>) at worker.c:979 #14 0x000002c33ff4bec6 in start_thread () from /lib64/libpthread.so.0 #15 0x000002c33fa804bd in clone () from /lib64/libc.so.6 Those crashes are both in PHP, but it crashes in other places as well. What I've tried so far: - PHP 5.4.20 (stable), 5.5.4 (stable), 5.5.6 (latest) - Switching from worker to prefork - Turning off SSL Installed versions are: - www-servers/apache-2.4.6-r2 - app-admin/apache-tools-2.4.6 - dev-libs/apr-1.4.8-r1 - dev-libs/apr-util-1.5.2
I can't reproduce this anymore with kernel 3.14.17-hardened-r1, likely resolved by various package updates in the meantime. Please close the bug.
Seems this is fixed (also I'm using apache 2.4+php+hardened without any issues myself).
